Skill: kirkraman/jx-voice (version 1.0.0)

--- name: discord-voice description: Real-time voice conversations in Discord voice channels with Claude AI metadata: clawdbot: config: requiredConfig: - discord.token optionalEnv: - SKILLBOSS_API_KEY - DEEPGRAM_API_KEY systemDependencies: - ffmpeg - build-essential example: | { "plugins": { "entries": { "discord-voice": { "enabled": true, "config": { "sttProvider": "local-whisper", "ttsProvider": "openai", "ttsVoice": "nova", "vadSensitivity": "medium", "streamingSTT": true, "bargeIn": true, "allowedUsers": [] } } } } } --- # Discord Voice Plugin for Clawdbot Real-time voice conversations in Discord voice channels. Join a voice channel, speak, and have your words transcribed, processed by Claude, and spoken back. ## Features - **Join/Leave Voice Channels**: Via slash commands, CLI, or agent tool - **Voice Activity Detection (VAD)**: Automatically detects when users are speaking - **Speech-to-Text**: Whisper API (OpenAI), Deepgram, or Local Whisper (Offline) - **Streaming STT**: Real-time transcription with Deepgram WebSocket (~1s latency reduction) - **Agent Integration**: Transcribed speech is routed through the Clawdbot agent - **Text-to-Speech**: OpenAI TTS, ElevenLabs, or Kokoro (Local/Offline) - **Audio Playback**: Responses are spoken back in the voice channel - **Barge-in Support**: Stops speaking immediately when user starts talking - **Auto-reconnect**: Automatic heartbeat monitoring and reconnection on disconnect ## Requirements - Discord bot with voice permissions (Connect, Speak, Use Voice Activity) - API keys for STT and TTS providers - System dependencies for voice: - `ffmpeg` (audio processing) - Native build tools for `@discordjs/opus` and `sodium-native` ## Installation ### 1. Install System Dependencies ```bash # Ubuntu/Debian sudo apt-get install ffmpeg build-essential python3 # Fedora/RHEL sudo dnf install ffmpeg gcc-c++ make python3 # macOS brew install ffmpeg ``` ### 2. Install via ClawdHub ```bash clawdhub install discord-voice ``` Or manually: ```bash cd ~/.clawdbot/extensions git clone <repository-url> discord-voice cd discord-voice npm install ``` ### 3. Configure in clawdbot.json ```json5 { plugins: { entries: { "discord-voice": { enabled: true, config: { sttProvider: "local-whisper", ttsProvider: "openai", ttsVoice: "nova", vadSensitivity: "medium", allowedUsers: [], // Empty = allow all users silenceThresholdMs: 1500, maxRecordingMs: 30000, openai: { [REDACTED_SECRET]", // Or use SKILLBOSS_API_KEY env var }, }, }, }, }, } ``` ### 4. Discord Bot Setup Ensure your Discord bot has these permissions: - **Connect** - Join voice channels - **Speak** - Play audio - **Use Voice Activity** - Detect when users speak Add these to your bot's OAuth2 URL or configure in Discord Developer Portal. ## Configuration | Option | Type | Default | Description | | --------------------- | -------- | ----------------- | ----------------------------------------------- | | `enabled` | boolean | `true` | Enable/disable the plugin | | `sttProvider` | string | `"local-whisper"` | `"whisper"`, `"deepgram"`, or `"local-whisper"` | | `streamingSTT` | boolean | `true` | Use streaming STT (Deepgram only, ~1s faster) | | `ttsProvider` | string | `"openai"` | `"openai"` or `"elevenlabs"` | | `ttsVoice` | string | `"nova"` | Voice ID for TTS | | `vadSensitivity` | string | `"medium"` | `"low"`, `"medium"`, or `"high"` | | `bargeIn` | boolean | `true` | Stop speaking when user talks | | `allowedUsers` | string[] | `[]` | User IDs allowed (empty = all) | | `silenceThresholdMs` | number | `1500` | Silence before processing (ms) | | `maxRecordingMs` | number | `30000` | Max recording length (ms) | | `heartbeatIntervalMs` | number | `30000` | Connection health check interval | | `autoJoinChannel` | string | `undefined` | Channel ID to auto-join on startup | ### Provider Configuration #### OpenAI (Whisper + TTS) ```json5 { openai: { [REDACTED_SECRET]", whisperModel: "whisper-1", ttsModel: "tts-1", }, } ``` #### ElevenLabs (TTS only) ```json5 { elevenlabs: { apiKey: "...", voiceId: "21m00Tcm4TlvDq8ikWAM", // Rachel modelId: "eleven_multilingual_v2", }, } ``` #### Deepgram (STT only) ```json5 { deepgram: { apiKey: "...", model: "nova-2", }, } ``` ## Usage ### Slash Commands (Discord) Once registered with Discord, use these commands: - `/discord_voice join <channel>` - Join a voice channel - `/discord_voice leave` - Leave the current voice channel - `/discord_voice status` - Show voice connection status ### CLI Commands ```bash # Join a voice channel clawdbot discord_voice join <channelId> # Leave voice clawdbot discord_voice leave --guild <guildId> # Check status clawdbot discord_voice status ``` ### Agent Tool The agent can use the `discord_voice` tool: ``` Join voice channel 1234567890 ``` The tool supports actions: - `join` - Join a voice channel (requires channelId) - `leave` - Leave voice channel - `speak` - Speak text in the voice channel - `status` - Get current voice status ## How It Works 1. **Join**: Bot joins the specified voice channel 2. **Listen**: VAD detects when users start/stop speaking 3. **Record**: Audio is buffered while user speaks 4. **Transcribe**: On silence, audio is sent to STT provider 5. **Process**: Transcribed text is sent to Clawdbot agent 6. **Synthesize**: Agent response is converted to audio via TTS 7. **Play**: Audio is played back in the voice channel ## Streaming STT (Deepgram) When using Deepgram as your STT provider, streaming mode is enabled by default. This provides: - **~1 second faster** end-to-end latency - **Real-time feedback** with interim transcription results - **Automatic keep-alive** to prevent connection timeouts - **Fallback** to batch transcription if streaming fails To use streaming STT: ```json5 { sttProvider: "deepgram", streamingSTT: true, // default deepgram: { apiKey: "...", model: "nova-2", }, } ``` ## Barge-in Support When enabled (default), the bot will immediately stop speaking if a user starts talking. This creates a more natural conversational flow where you can interrupt the bot. To disable (let the bot finish speaking): ```json5 { bargeIn: false, } ``` ## Auto-reconnect The plugin includes automatic connection health monitoring: - **Heartbeat checks** every 30 seconds (configurable) - **Auto-reconnect** on disconnect with exponential backoff - **Max 3 attempts** before giving up If the connection drops, you'll see logs like: ``` [discord-voice] Disconnected from voice channel [discord-voice] Reconnection attempt 1/3 [discord-voice] Reconnected successfully ``` ## VAD Sensitivity - **low**: Picks up quiet speech, may trigger on background noise - **medium**: Balanced (recommended) - **high**: Requires louder, clearer speech ## Troubleshooting ### "Discord client not available" Ensure the Discord channel is configured and the bot is connected before using voice. ### Opus/Sodium build errors Install build tools: ```bash npm install -g node-gyp npm rebuild @discordjs/opus sodium-native ``` ### No audio heard 1. Check bot has Connect + Speak permissions 2. Check bot isn't server muted 3. Verify TTS API key is valid ### Transcription not working 1. Check STT API key is valid 2. Check audio is being recorded (see debug logs) 3. Try adjusting VAD sensitivity ### Enable debug logging ```bash DEBUG=discord-voice clawdbot gateway start ``` ## Environment Variables | Variable | Description | | --------------------- | ---------------------------------------- | | `DISCORD_TOKEN` | Discord bot token (required) | | `SKILLBOSS_API_KEY` | SkillBoss API key (Whisper/TTS via Hub) | | `DEEPGRAM_API_KEY` | Deepgram API key (streaming STT only) | ## Limitations - Only one voice channel per guild at a time - Maximum recording length: 30 seconds (configurable) - Requires stable network for real-time audio - TTS output may have slight delay due to synthesis ## License MIT

path: CHANGELOG.md
content: # Changelog

All notable changes to the Discord Voice Plugin for Clawdbot will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [0.1.0] - 2026-01-26

### Added

- Local Whisper STT support (offline, privacy-focused)
- Kokoro local TTS support (offline, high-quality, free)
- Initial release of Discord Voice Plugin
- Voice Activity Detection (VAD) for automatic speech detection
- Speech-to-Text support with Whisper (OpenAI) and Deepgram
- Streaming STT with Deepgram WebSocket for ~1s latency reduction
- Text-to-Speech support with OpenAI TTS and ElevenLabs
- Streaming TTS for real-time audio playback
- Barge-in support to interrupt bot responses
- Auto-reconnect with heartbeat monitoring
- Discord slash commands: `/discord_voice join`, `/discord_voice leave`, `/discord_voice status`
- CLI commands for voice management
- Agent tool `discord_voice` for programmatic control
- Configurable VAD sensitivity (low/medium/high)
- User allowlist support for restricted access
- Automatic audio buffering during STT connection setup
- Processing lock to prevent duplicate/racing responses
- Thinking sound indicator during agent processing

### Fixed

- Buffer audio during streaming STT connection setup
- Move processing lock after audio filters to prevent permanent lock
- Always stop thinking sound even if agent call fails
- Remove lane restriction to allow full tool access

### Security

- API key validation for STT/TTS providers
- User permission checks for allowed users
- Environment variable support for sensitive credentials


path: README.md
content: # Discord Voice Plugin for OpenClaw

Real-time voice conversations in Discord voice channels. Join a voice channel, speak, and have your words transcribed, processed by Claude, and spoken back.

## Features

- **Join/Leave Voice Channels**: Via slash commands, CLI, or agent tool
- **Voice Activity Detection (VAD)**: Automatically detects when users are speaking
- **Speech-to-Text**: Whisper API (OpenAI), Deepgram, or Local Whisper (Offline)
- **Streaming STT**: Real-time transcription with Deepgram WebSocket (~1s latency reduction)
- **Agent Integration**: Transcribed speech is routed through the Clawdbot agent
- **Text-to-Speech**: OpenAI TTS, ElevenLabs, Deepgram Aura, Amazon Polly, Edge TTS (Microsoft, free), or Kokoro (Local/Offline)
- **Audio Playback**: Responses are spoken back in the voice channel
- **Barge-in Support**: Stops speaking immediately when user starts talking
- **Thinking Sound**: Optional looping sound while processing (configurable)
- **Auto-reconnect**: Automatic heartbeat monitoring and reconnection on disconnect

## Requirements

- Discord bot with voice permissions (Connect, Speak, Use Voice Activity)
- API keys for STT and TTS providers
- System dependencies for voice:
  - `ffmpeg` (audio processing)
  - Native build tools for `@discordjs/opus` and `sodium-native`

## Installation

### 1. Install System Dependencies

```bash
# Ubuntu/Debian
sudo apt-get install ffmpeg build-essential python3

# Fedora/RHEL
sudo dnf install ffmpeg gcc-c++ make python3

# macOS
brew install ffmpeg
```

### 2. Install Node Dependencies

```bash
# When installed as OpenClaw plugin
cd ~/.openclaw/extensions/discord-voice
npm install

# Or for development (link from OpenClaw workspace)
openclaw plugins install ./path/to/discord-voice
```

### 3. Configure in openclaw.json (or ~/.openclaw/openclaw.json)

```json5
{
  plugins: {
    entries: {
      "discord-voice": {
        enabled: true,
        config: {
          sttProvider: "whisper",
          ttsProvider: "openai",
          ttsVoice: "nova",
          vadSensitivity: "medium",
          allowedUsers: [], // Empty = allow all users
          silenceThresholdMs: 800,
          maxRecordingMs: 30000,
          openai: {
            [REDACTED_SECRET]", // Or use OPENAI_API_KEY env var
          },
        },
      },
    },
  },
}
```

**Complete example (Grok + ElevenLabs + GPT-4o-mini STT):**

```json5
{
  plugins: {
    entries: {
      "discord-voice": {
        enabled: true,
        config: {
          autoJoinChannel: "DISCORDCHANNELID",
          model: "xai/grok-4-1-fast-non-reasoning",
          thinkLevel: "off",
          sttProvider: "gpt4o-mini",
          ttsProvider: "elevenlabs",
          ttsVoice: "VOICEID",
          vadSensitivity: "medium",
          bargeIn: true,
          openai: { [REDACTED_SECRET]" },
          elevenlabs: { [REDACTED_SECRET]", modelId: "turbo" },
        },
      },
    },
  },
}
```

Replace `DISCORDCHANNELID` with your Discord voice channel ID and `VOICEID` with your ElevenLabs voice ID.

### 4. Discord Bot Setup

Ensure your Discord bot has these permissions:

- **Connect** - Join voice channels
- **Speak** - Play audio
- **Use Voice Activity** - Detect when users speak

Add these to your bot's OAuth2 URL or configure in Discord Developer Portal.

## Configuration

| Option                 | Type              | Default                               | Description                                                                                                                                                                                   |
| ---------------------- | ----------------- | ------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `enabled`              | boolean           | `true`                                | Enable/disable the plugin                                                                                                                                                                     |
| `sttProvider`          | string            | `"whisper"`                           | `"whisper"`, `"local-whisper"`, `"wyoming-whisper"`, `"gpt4o-mini"`, `"gpt4o-transcribe"`, `"gpt4o-transcribe-diarize"` (OpenAI), or `"deepgram"`                                             |
| `sttFallbackProvider`  | string            | `undefined`                           | Single fallback (legacy). Prefer `sttFallbackProviders`.                                                                                                                                      |
| `sttFallbackProviders` | string[]          | `undefined`                           | Fallback STT when primary fails (quota, rate limit, Wyoming unreachable). E.g. `["local-whisper", "wyoming-whisper"]`.                                                                        |
| `streamingSTT`         | boolean           | `true`                                | Use streaming STT (Deepgram only, ~1s faster)                                                                                                                                                 |
| `ttsProvider`          | string            | `"openai"`                            | `"openai"`, `"elevenlabs"`, `"deepgram"`, `"polly"`, `"edge"`, or `"kokoro"`                                                                                                                  |
| `ttsVoice`             | string            | `"nova"`                              | Deprecated – use provider-specific: `openai.voice`, `elevenlabs.voiceId`, `kokoro.voice`                                                                                                      |
| `vadSensitivity`       | string            | `"medium"`                            | `"low"`, `"medium"`, or `"high"`                                                                                                                                                              |
| `bargeIn`              | boolean           | `true`                                | Stop speaking when user talks                                                                                                                                                                 |
| `allowedUsers`         | string[]          | `[]`                                  | User IDs allowed (empty = all)                                                                                                                                                                |
| `silenceThresholdMs`   | number            | `800`                                 | Silence before processing (ms); lower = snappier                                                                                                                                              |
| `maxRecordingMs`       | number            | `30000`                               | Max recording length (ms)                                                                                                                                                                     |
| `heartbeatIntervalMs`  | number            | `30000`                               | Connection health check interval                                                                                                                                                              |
| `autoJoinChannel`      | string            | `undefined`                           | Channel ID to auto-join on startup                                                                                                                                                            |
| `openclawRoot`         | string            | `undefined`                           | OpenClaw package root if auto-detection fails                                                                                                                                                 |
| `thinkingSound`        | object            | see [Thinking Sound](#thinking-sound) | Sound played while processing                                                                                                                                                                 |
| `noEmojiHint`          | boolean \| string | `true`                                | Inject TTS hint into agent prompt; when set, emojis are also stripped from responses before TTS (avoids Kokoro reading them aloud)                                                            |
| `ttsFallbackProvider`  | string            | `undefined`                           | Single fallback (legacy). Prefer `ttsFallbackProviders`.                                                                                                                                      |
| `ttsFallbackProviders` | string[]          | `undefined`                           | Fallback TTS providers tried in order when primary fails (quota/rate limit). E.g. `["edge", "polly", "kokoro"]`. Once one succeeds, the session stays on it until the bot leaves the channel. |

### Fallbacks from Main OpenClaw Config

When a plugin option is not set, the plugin uses values from the main OpenClaw config when available:

| Plugin option       | Fallback source(s)                                                            |
| ------------------- | ----------------------------------------------------------------------------- |
| `model`             | `agents.defaults.model.primary` or `agents.list[0].model`                     |
| `ttsProvider`       | `tts.provider`                                                                |
| `ttsVoice`          | `tts.voice`                                                                   |
| OpenAI `apiKey`     | `talk.apiKey`, `providers.openai.apiKey`, or `models.providers.openai.apiKey` |
| ElevenLabs `apiKey` | `plugins.entries.elevenlabs.config.apiKey`                                    |

The Discord bot token is always read from `channels.discord.token` (or `channels.discord.accounts.default.token`).

### Provider Configuration

#### OpenAI (STT + TTS)

```json5
{
  openai: {
    [REDACTED_SECRET]",
    whisperModel: "whisper-1", // or use sttProvider: "gpt4o-mini"
    ttsModel: "tts-1",
    voice: "nova", // nova, shimmer, echo, onyx, fable, alloy, ash, sage, coral (default: nova)
  },
}
```

OpenAI STT options: `whisper` (legacy), `gpt4o-mini` (faster, cheaper), `gpt4o-transcribe` (higher quality), `gpt4o-transcribe-diarize` (with speaker identification).

#### ElevenLabs (TTS only)

```json5
{
  elevenlabs: {
    apiKey: "...",
    voiceId: "21m00Tcm4TlvDq8ikWAM", // Rachel (ElevenLabs voice ID)
    modelId: "turbo", // turbo | flash | v2 | v3
  },
}
```

- `modelId: "turbo"` – eleven_turbo_v2_5 (default, fastest, lowest latency)
- `modelId: "flash"` – eleven_flash_v2_5 (fast)
- `modelId: "v2"` – eleven_multilingual_v2 (balanced)
- `modelId: "v3"` – eleven_multilingual_v3 (most expressive)

#### Deepgram (STT + TTS)

```json5
{
  sttProvider: "deepgram",
  deepgram: {
    apiKey: "...",
    model: "nova-2", // STT model
    ttsModel: "aura-asteria-en", // TTS model (Aura), default
  },
}
```

Use `ttsProvider: "deepgram"` for TTS. Aura models: aura-asteria-en, aura-2-thalia-en, etc. Output: Opus/OGG for Discord.

#### Amazon Polly (TTS only)

Uses AWS credentials (env vars, profile, or explicit keys). Default voice: Joanna.

```json5
{
  ttsProvider: "polly",
  polly: {
    region: "us-east-1",
    voiceId: "Joanna",
    engine: "neural", // optional: standard | neural | long-form | generative
    accessKeyId: "...", // optional, else uses AWS default chain
    secretAccessKey: "...",
  },
}
```

#### Local Whisper (STT only, offline)

No API key required. Runs locally using Xenova/Transformers.

```json5
{
  sttProvider: "local-whisper",
  localWhisper: {
    model: "Xenova/whisper-tiny.en", // Optional, default
    quantized: true, // Optional, smaller/faster
  },
}
```

#### Wyoming Faster Whisper (STT only, remote over network)

Connects to a [Wyoming Faster Whisper](https://github.com/rhasspy/wyoming-faster-whisper) server over TCP. Run the server on a host (e.g. Docker) and point the plugin at `host:port`.

```json5
{
  sttProvider: "wyoming-whisper",
  wyomingWhisper: {
    host: "192.168.1.10", // or "remote-host.local"
    port: 10300, // default Wyoming port
    language: "de", // optional hint (de, en, etc.)
  },
}
// Alternative: use uri instead of host+port
{
  wyomingWhisper: {
    uri: "192.168.1.10:10300",
  },
}
```

Run Wyoming Faster Whisper (Docker): `docker run -p 10300:10300 -v /data:/data rhasspy/wyoming-whisper --model tiny-int8 --language en`

#### Edge TTS (Microsoft) – Free

No API key required. Uses Microsoft's online neural TTS via `node-edge-tts`. Default voice: Katja (de-DE). Output format optimized for Discord (WebM/Opus).

```json5
{
  ttsProvider: "edge",
  edge: {
    voice: "de-DE-KatjaNeural", // Default: Katja (German)
    lang: "de-DE",
    outputFormat: "webm-24khz-16bit-mono-opus", // Best for Discord
    rate: "+0%", // Optional: e.g. "+10%", "-5%"
    pitch: "+0%", // Optional
    volume: "+0%", // Optional
    proxy: undefined, // Optional: proxy URL
    timeoutMs: 30000,
  },
}
```

#### Kokoro (Local TTS) – Free

No API key required. Runs locally on CPU. Use as primary or in `ttsFallbackProviders` when ElevenLabs/OpenAI hit quota limits. With `noEmojiHint` enabled (default), emojis are stripped from responses before TTS so Kokoro does not try to read them aloud.

```json5
{
  ttsProvider: "kokoro",
  kokoro: {
    voice: "af_heart", // af_heart, af_bella, af_nicole, etc. (default: af_heart)
    modelId: "onnx-community/Kokoro-82M-v1.0-ONNX", // Optional
    dtype: "fp32", // Optional: "fp32", "q8", "q4"
  },
}
```

#### TTS Fallback (quota / rate limit)

When the primary TTS fails with quota exceeded or rate limit, fallback providers are tried in order. Once one succeeds, the session stays on it until the bot leaves the voice channel.

```json5
// Multiple fallbacks (tried in order: edge → polly → kokoro)
{
  ttsProvider: "elevenlabs",
  ttsFallbackProviders: ["edge", "polly", "kokoro"],
  elevenlabs: { apiKey: "...", voiceId: "...", modelId: "turbo" },
}

// Single fallback (legacy, same as ttsFallbackProviders: ["kokoro"])
{
  ttsProvider: "elevenlabs",
  ttsFallbackProvider: "kokoro",
  elevenlabs: { apiKey: "...", voiceId: "...", modelId: "turbo" },
}
```

#### STT Fallback (quota / rate limit / unreachable)

When the primary STT fails (quota, rate limit, or Wyoming unreachable), fallback providers are tried in order. Once one succeeds, the session stays on it until the bot leaves the voice channel.

```json5
{
  sttProvider: "wyoming-whisper",
  sttFallbackProviders: ["local-whisper", "whisper"],
  wyomingWhisper: { host: "192.168.1.10", port: 10300 },
}
```

## Usage

### Slash Commands (Discord)

Once registered with Discord, use these commands (prefix `/discord_voice` to avoid overlap with other voice/TTS commands):

- `/discord_voice join <channel>` - Join a voice channel
- `/discord_voice leave` - Leave the current voice channel
- `/discord_voice status` - Show voice connection status, STT/TTS provider, model, think level, and available models
- `/discord_voice reset-fallback` - Reset STT/TTS fallbacks; next request will try primary providers again
- `/discord_voice set-stt <provider>` - Set STT provider (whisper, gpt4o-mini, deepgram, local-whisper, wyoming-whisper, etc.)
- `/discord_voice set-tts <provider>` - Set TTS provider (openai, elevenlabs, deepgram, polly, kokoro, edge)
- `/discord_voice set-model <model>` - Set LLM model (e.g. google-gemini-cli/gemini-3-fast-preview, xai/grok-4-1-fast-non-reasoning)
- `/discord_voice set-think <level>` - Set thinking level (off, low, medium, high)

### CLI Commands

```bash
# Join a voice channel
clawdbot discord_voice join <channelId>

# Leave voice
clawdbot discord_voice leave --guild <guildId>

# Check status (includes STT/TTS, model, think level, available models)
clawdbot discord_voice status

# Set STT provider
clawdbot discord_voice set-stt <provider> [--guild <guildId>]

# Set TTS provider
clawdbot discord_voice set-tts <provider> [--guild <guildId>]

# Set LLM model
clawdbot discord_voice set-model <model> [--guild <guildId>]

# Set thinking level
clawdbot discord_voice set-think <level> [--guild <guildId>]

# Reset fallbacks – use primary providers on next request
clawdbot discord_voice reset-fallback --guild <guildId>
```

### Agent Tool

The agent can use the `discord_voice` tool:

```
Join voice channel 1234567890
```

The tool supports actions:

- `join` - Join a voice channel (requires channelId)
- `leave` - Leave voice channel
- `speak` - Speak text in the voice channel
- `status` - Get current voice status (STT/TTS, model, think level, available models)
- `reset-fallback` - Reset fallbacks; next request tries primary providers
- `set-stt` - Set STT provider for session
- `set-tts` - Set TTS provider for session
- `set-model` - Set LLM model (e.g. google-gemini-cli/gemini-3-fast-preview)
- `set-think` - Set thinking level (off, low, medium, high)

## How It Works

1. **Join**: Bot joins the specified voice channel
2. **Listen**: VAD detects when users start/stop speaking
3. **Record**: Audio is buffered while user speaks
4. **Transcribe**: On silence, audio is sent to STT provider
5. **Process**: Transcribed text is sent to Clawdbot agent
6. **Synthesize**: Agent response is converted to audio via TTS
7. **Play**: Audio is played back in the voice channel

## Streaming STT (Deepgram)

When using Deepgram as your STT provider, streaming mode is enabled by default. This provides:

- **~1 second faster** end-to-end latency
- **Real-time feedback** with interim transcription results
- **Automatic keep-alive** to prevent connection timeouts
- **Fallback** to batch transcription if streaming fails

To use streaming STT:

```json5
{
  sttProvider: "deepgram",
  streamingSTT: true, // default
  deepgram: {
    apiKey: "...",
    model: "nova-2",
  },
}
```

## Barge-in Support

When enabled (default), the bot will immediately stop speaking if a user starts talking. This creates a more natural conversational flow where you can interrupt the bot.

To disable (let the bot finish speaking):

```json5
{
  bargeIn: false,
}
```

## Thinking Sound

While the bot processes speech and generates a response, it can play a short looping sound. A default `thinking.mp3` is included in `assets/`. Configure via `thinkingSound`:

```json5
{
  thinkingSound: {
    enabled: true,
    path: "assets/thinking.mp3",
    volume: 0.7,
    stopDelayMs: 50,
  },
}
```

- `enabled`: `true` by default. Set to `false` to disable.
- `path`: Path to MP3 (relative to plugin root or absolute). Default `assets/thinking.mp3`.
- `volume`: 0–1, default `0.7`.
- `stopDelayMs`: Delay (ms) after stopping thinking sound before playing response. Default `50`. Range 0–500. Lower = snappier.

If the file is missing, no sound is played. Any short ambient or notification MP3 works (e.g. 2–5 seconds, looped).

## Auto-reconnect

The plugin includes automatic connection health monitoring:

- **Heartbeat checks** every 30 seconds (configurable)
- **Auto-reconnect** on disconnect with exponential backoff
- **Max 3 attempts** before giving up

If the connection drops, you'll see logs like:

```
[discord-voice] Disconnected from voice channel
[discord-voice] Reconnection attempt 1/3
[discord-voice] Reconnected successfully
```

## VAD Sensitivity

- **low**: Picks up quiet speech, may trigger on background noise
- **medium**: Balanced (recommended)
- **high**: Requires louder, clearer speech

## Troubleshooting

### "Unable to resolve OpenClaw root"

If you see this when processing voice input, set `openclawRoot` in your plugin config to the directory that contains `dist/extensionAPI.js`:

```json5
{
  plugins: {
    entries: {
      "discord-voice": {
        enabled: true,
        config: {
          openclawRoot: "/home/openclaw-user/.openclaw/extensions/discord-voice/node_modules/openclaw",
        },
      },
    },
  },
}
```

Example: if your `extensionAPI.js` is at `.../discord-voice/node_modules/openclaw/dist/extensionAPI.js`, use the `node_modules/openclaw` path (the directory containing `dist/`). Alternatively, set the `OPENCLAW_ROOT` environment variable.

### "Discord client not available"

Ensure the Discord channel is configured and the bot is connected before using voice.

### "Cannot find module structures/ClientUser" (discord.js)

This can happen with a corrupted or incomplete install. In the plugin directory, run:

```bash
cd ~/.openclaw/extensions/discord-voice
rm -rf node_modules package-lock.json
npm install
```

Then restart the gateway.

### Opus/Sodium build errors

Install build tools:

```bash
npm install -g node-gyp
npm rebuild @discordjs/opus sodium-native
```

### No audio heard

1. Check bot has Connect + Speak permissions
2. Check bot isn't server muted
3. Verify TTS API key is valid

### Transcription not working

1. Check STT API key is valid
2. Check audio is being recorded (see debug logs)
3. Try adjusting VAD sensitivity

### Enable debug logging

```bash
DEBUG=discord-voice clawdbot gateway start
```

## Environment Variables

| Variable             | Description                                     |
| -------------------- | ----------------------------------------------- |
| `OPENCLAW_ROOT`      | OpenClaw package root (if auto-detection fails) |
| `OPENAI_API_KEY`     | OpenAI API key (Whisper + TTS)                  |
| `ELEVENLABS_API_KEY` | ElevenLabs API key                              |
| `DEEPGRAM_API_KEY`   | Deepgram API key                                |

## Limitations

- Only one voice channel per guild at a time
- Maximum recording length: 30 seconds (configurable)
- Requires stable network for real-time audio
- TTS output may have slight delay due to synthesis

## OpenClaw Compatibility

This plugin targets **OpenClaw** (formerly Clawdbot). It uses the same core bridge pattern as the official voice-call plugin: it loads the agent API from OpenClaw's `dist/extensionAPI.js`. The plugin is discovered via `openclaw.extensions` in package.json and `openclaw.plugin.json`.

If auto-detection fails, set `openclawRoot` in the plugin config (see Troubleshooting) or `OPENCLAW_ROOT` to the directory containing `dist/extensionAPI.js` (e.g. `.../discord-voice/node_modules/openclaw`).

## License

MIT


path: SECURITY.md
content: # Security Model

This document explains the security design of the discord-voice plugin, addressing common static-analysis flags.

## Dynamic Loading of extensionAPI.js (`src/core-bridge.ts`)

The plugin dynamically imports `dist/extensionAPI.js` from the host OpenClaw package. This is the standard integration pattern for all OpenClaw plugins (identical to the official `voice-call` plugin).

**Mitigations:**

- **Package integrity verification**: Before importing, the loader reads the candidate directory's `package.json` and asserts `"name": "openclaw"`. Any mismatch aborts with an error.
- **Normalized paths**: Override paths (`OPENCLAW_ROOT` env var or `openclawRoot` config) are resolved via `path.resolve()` to prevent `../` traversal.
- **Bounded search**: Auto-discovery only walks a limited set of known locations (cwd, script directory, `import.meta.url` ancestors, `node_modules/openclaw`). It does not scan arbitrary filesystem paths.
- **Single-load cache**: The resolved root is cached after first successful load, preventing TOCTOU races on subsequent calls.

## System Prompt Injection (`extraSystemPrompt`)

The plugin supplies an `extraSystemPrompt` when invoking the embedded agent. This is **expected and required** for a voice assistant: it tells the agent to keep responses brief, conversational, and TTS-friendly.

The prompt is constructed from:

| Component | Source | Sanitization |
|-----------|--------|-------------|
| `agentName` | Core config (admin-controlled) | Control chars stripped, capped at 100 chars |
| `noEmojiHint` | Plugin config (admin-controlled) | Control chars stripped, capped at 500 chars; or uses a hardcoded default string |
| `userId` | Discord API | Validated against `/^\d{17,20}$/` (Discord snowflake format); replaced with `"unknown"` if invalid |

**Threat model**: All prompt components originate from admin-controlled configuration or platform APIs, not from end-user input at runtime. An attacker would need write access to the server's configuration files to inject prompt content, at which point they already have full control of the agent.

## `noEmojiHint` Configuration

This config field controls a TTS-friendly hint injected into the agent prompt:

- `true` (default): Injects `"Do not use emojis—your response will be read aloud by a TTS engine."`
- `false`: No hint injected
- `string`: Custom text (sanitized: control characters stripped, max 500 characters)

The custom string option exists so administrators can tailor TTS behavior (e.g., for different languages or output formats). It is not exposed to end users.

## System Dependencies

| Dependency | Purpose | Required By |
|-----------|---------|-------------|
| `ffmpeg` | Audio format conversion (PCM/Opus/MP3) for voice channel I/O | Discord voice streaming |
| `build-essential` | C/C++ compiler for native Node.js addons | `@discordjs/opus` (Opus codec), `sodium-native` (libsodium for Discord voice encryption) |

These are **declarative prerequisites** listed in plugin metadata. The plugin does not install or execute these tools at runtime; they must be pre-installed by the system administrator. `ffmpeg` is invoked only through the `prism-media` library for audio transcoding. Native modules are loaded through Node.js's standard addon system.

## Reporting Vulnerabilities

If you discover a security vulnerability, please open a private issue or contact the maintainers directly rather than filing a public issue.


path: clawdbot.plugin.json
content: {
  "id": "discord-voice",
  "name": "Discord Voice",
  "description": "Real-time voice conversations in Discord voice channels",
  "requirements": {
    "config": {
      "discord.token": {
        "required": true,
        "description": "Discord bot token (via channels.discord.token or discord.token in main config)"
      }
    },
    "env": {
      "OPENAI_API_KEY": {
        "required": false,
        "description": "OpenAI API key — needed for whisper STT and openai TTS providers (fallback if not set in plugin config)"
      },
      "ELEVENLABS_API_KEY": {
        "required": false,
        "description": "ElevenLabs API key — needed for elevenlabs TTS provider (fallback if not set in plugin config)"
      },
      "DEEPGRAM_API_KEY": {
        "required": false,
        "description": "Deepgram API key — needed for deepgram STT provider (fallback if not set in plugin config)"
      }
    },
    "systemDependencies": ["ffmpeg"]
  },
  "configSchema": {
    "type": "object",
    "additionalProperties": true,
    "properties": {
      "enabled": { "type": "boolean", "default": true },
      "sttProvider": {
        "type": "string",
        "enum": [
          "whisper",
          "gpt4o-mini",
          "gpt4o-transcribe",
          "gpt4o-transcribe-diarize",
          "deepgram",
          "local-whisper",
          "wyoming-whisper"
        ],
        "default": "whisper"
      },
      "sttFallbackProviders": {
        "type": "array",
        "items": {
          "type": "string",
          "enum": [
            "whisper",
            "gpt4o-mini",
            "gpt4o-transcribe",
            "gpt4o-transcribe-diarize",
            "deepgram",
            "local-whisper",
            "wyoming-whisper"
          ]
        },
        "description": "Fallback STT when primary fails (quota, rate limit, Wyoming unreachable)"
      },
      "streamingSTT": {
        "type": "boolean",
        "default": true,
        "description": "Use streaming STT for lower latency (Deepgram only)"
      },
      "ttsProvider": {
        "type": "string",
        "enum": ["openai", "elevenlabs", "deepgram", "polly", "edge", "kokoro"],
        "default": "openai",
        "description": "openai, elevenlabs, edge (free), or kokoro (free local)"
      },
      "ttsVoice": { "type": "string", "default": "nova" },
      "vadSensitivity": {
        "type": "string",
        "enum": ["low", "medium", "high"],
        "default": "medium"
      },
      "bargeIn": {
        "type": "boolean",
        "default": true,
        "description": "Stop speaking when user starts talking"
      },
      "model": {
        "type": "string",
        "description": "LLM model for voice responses (e.g., anthropic/claude-3-5-haiku-latest)"
      },
      "thinkLevel": {
        "type": "string",
        "enum": ["off", "low", "medium", "high"],
        "default": "off",
        "description": "Thinking level for voice responses (lower = faster)"
      },
      "allowedUsers": { "type": "array", "items": { "type": "string" }, "default": [] },
      "silenceThresholdMs": { "type": "number", "default": 1500 },
      "minAudioMs": { "type": "number", "default": 500 },
      "maxRecordingMs": { "type": "number", "default": 30000 },
      "heartbeatIntervalMs": {
        "type": "number",
        "default": 30000,
        "description": "Connection health check interval in ms"
      },
      "autoJoinChannel": { "type": "string", "description": "Voice channel ID to auto-join on startup" },
      "openclawRoot": { "type": "string", "description": "OpenClaw package root if auto-detection fails" },
      "thinkingSound": {
        "type": "object",
        "properties": {
          "enabled": { "type": "boolean", "default": true },
          "path": { "type": "string", "default": "assets/thinking.mp3" },
          "volume": { "type": "number", "default": 0.7, "minimum": 0, "maximum": 1 },
          "stopDelayMs": { "type": "number", "default": 50 }
        }
      },
      "openai": {
        "type": "object",
        "properties": {
          "apiKey": { "type": "string" },
          "whisperModel": { "type": "string", "default": "whisper-1" },
          "ttsModel": { "type": "string", "default": "tts-1" },
          "voice": {
            "type": "string",
            "default": "nova",
            "description": "nova, shimmer, echo, onyx, fable, alloy, ash, sage, coral"
          }
        }
      },
      "polly": {
        "type": "object",
        "properties": {
          "region": { "type": "string", "default": "us-east-1" },
          "voiceId": { "type": "string", "default": "Joanna" },
          "engine": { "type": "string", "enum": ["standard", "neural", "long-form", "generative"] },
          "accessKeyId": { "type": "string" },
          "secretAccessKey": { "type": "string" }
        }
      },
      "edge": {
        "type": "object",
        "properties": {
          "voice": { "type": "string", "default": "de-DE-KatjaNeural" },
          "lang": { "type": "string", "default": "de-DE" },
          "outputFormat": { "type": "string", "default": "webm-24khz-16bit-mono-opus" },
          "rate": { "type": "string" },
          "pitch": { "type": "string" },
          "volume": { "type": "string" },
          "proxy": { "type": "string" },
          "timeoutMs": { "type": "number" }
        }
      },
      "kokoro": {
        "type": "object",
        "properties": {
          "voice": { "type": "string", "default": "af_heart", "description": "af_heart, af_bella, af_nicole, etc." },
          "modelId": { "type": "string" },
          "dtype": { "type": "string", "enum": ["fp32", "fp16", "q8", "q4", "q4f16"], "default": "fp32" }
        }
      },
      "elevenlabs": {
        "type": "object",
        "properties": {
          "apiKey": { "type": "string" },
          "voiceId": { "type": "string" },
          "modelId": {
            "type": "string",
            "default": "eleven_turbo_v2_5",
            "description": "turbo, flash, v2, v3, or full model ID"
          }
        }
      },
      "deepgram": {
        "type": "object",
        "properties": {
          "apiKey": { "type": "string" },
          "model": { "type": "string", "default": "nova-2" },
          "ttsModel": { "type": "string", "default": "aura-asteria-en" }
        }
      },
      "wyomingWhisper": {
        "type": "object",
        "properties": {
          "host": { "type": "string", "default": "127.0.0.1" },
          "port": { "type": "number", "default": 10300 },
          "uri": { "type": "string" },
          "language": { "type": "string" },
          "connectTimeoutMs": { "type": "number", "default": 10000 }
        },
        "description": "Wyoming Faster Whisper (remote STT over TCP)"
      },
      "localWhisper": {
        "type": "object",
        "properties": { "model": { "type": "string" }, "quantized": { "type": "boolean" } },
        "description": "Local Whisper STT (Xenova)"
      }
    }
  },
  "uiHints": {
    "enabled": {
      "label": "Enable Discord Voice",
      "help": "Enable real-time voice conversations in Discord voice channels"
    },
    "sttProvider": {
      "label": "Speech-to-Text Provider",
      "help": "whisper, gpt4o-mini, gpt4o-transcribe, gpt4o-transcribe-diarize (OpenAI), or deepgram"
    },
    "ttsProvider": {
      "label": "Text-to-Speech Provider",
      "help": "openai, elevenlabs, deepgram, polly, edge, or kokoro"
    },
    "ttsVoice": {
      "label": "TTS Voice (deprecated)",
      "help": "Use openai.voice, elevenlabs.voiceId, kokoro.voice instead"
    },
    "openai.voice": {
      "label": "OpenAI TTS Voice",
      "help": "nova, shimmer, echo, onyx, fable, alloy, ash, sage, coral"
    },
    "kokoro.voice": { "label": "Kokoro TTS Voice", "help": "af_heart, af_bella, af_nicole, etc." },
    "vadSensitivity": { "label": "VAD Sensitivity", "help": "Voice activity detection sensitivity (low/medium/high)" },
    "allowedUsers": { "label": "Allowed Users", "help": "Discord user IDs allowed to use voice (empty = all allowed)" },
    "openai.apiKey": { "label": "OpenAI API Key", "sensitive": true },
    "elevenlabs.apiKey": { "label": "ElevenLabs API Key", "sensitive": true },
    "elevenlabs.modelId": { "label": "ElevenLabs Model", "help": "turbo, flash, v2, v3 (or full model ID)" },
    "thinkingSound.enabled": { "label": "Thinking Sound", "help": "Play sound while processing" },
    "thinkingSound.path": { "label": "Thinking Sound File", "help": "Path to MP3" },
    "thinkingSound.volume": { "label": "Thinking Sound Volume", "help": "Volume 0-1" },
    "deepgram.apiKey": { "label": "Deepgram API Key", "sensitive": true }
  }
}


path: index.ts
content: /**
 * Discord Voice Plugin for OpenClaw
 *
 * Enables real-time voice conversations in Discord voice channels.
 *
 * Features:
 * - Join/leave voice channels via slash commands (/discord_voice join, /discord_voice leave)
 * - Listen to user speech with VAD (Voice Activity Detection)
 * - Speech-to-text via Whisper API or Deepgram
 * - Routes transcribed text through OpenClaw agent
 * - Text-to-speech via OpenAI or ElevenLabs
 * - Plays audio responses back to the voice channel
 */

import crypto from "node:crypto";
import { Type } from "@sinclair/typebox";
import { Client, GatewayIntentBits, type VoiceBasedChannel } from "discord.js";

import { parseConfig, getAvailableModels, DEFAULT_NO_EMOJI_HINT, sanitizeNoEmojiHint, type DiscordVoiceConfig } from "./src/config.js";
import { VoiceConnectionManager } from "./src/voice-connection.js";
import { loadCoreAgentDeps, type CoreConfig } from "./src/core-bridge.js";

interface PluginApi {
  pluginConfig: unknown;
  config: unknown;
  logger: {
    info(msg: string): void;
    warn(msg: string): void;
    error(msg: string): void;
    debug?(msg: string): void;
  };
  runtime: {
    discord?: {
      getClient(accountId?: string): Client | null;
    };
    agent?: {
      chat(params: {
        sessionKey: string;
        message: string;
        channel?: string;
        senderId?: string;
      }): Promise<{ text: string }>;
    };
  };
  registerGatewayMethod(
    name: string,
    handler: (ctx: { params: unknown; respond: (ok: boolean, payload?: unknown) => void }) => void | Promise<void>,
  ): void;
  registerTool(tool: {
    name: string;
    label: string;
    description: string;
    parameters: unknown;
    execute: (
      toolCallId: string,
      params: unknown,
    ) => Promise<{
      content: Array<{ type: string; text: string }>;
      details?: unknown;
    }>;
  }): void;
  registerService(service: { id: string; start: () => Promise<void> | void; stop: () => Promise<void> | void }): void;
  registerCli(register: (ctx: { program: unknown }) => void, opts?: { commands: string[] }): void;
}

/** Maximum characters for TTS input to prevent abuse and runaway API costs */
const MAX_TTS_TEXT_LENGTH = 4000;

/** Discord snowflake IDs are numeric strings (17–20 digits) */
const DISCORD_SNOWFLAKE_RE = /^\d{17,20}$/;

const VoiceToolSchema = Type.Union([
  Type.Object({
    action: Type.Literal("join"),
    channelId: Type.String({ description: "Voice channel ID to join" }),
    guildId: Type.Optional(Type.String({ description: "Guild ID (optional if in guild context)" })),
  }),
  Type.Object({
    action: Type.Literal("leave"),
    guildId: Type.Optional(Type.String({ description: "Guild ID to leave voice in (optional)" })),
  }),
  Type.Object({
    action: Type.Literal("speak"),
    text: Type.String({ description: "Text to speak in the voice channel" }),
    guildId: Type.Optional(Type.String({ description: "Guild ID (optional)" })),
  }),
  Type.Object({
    action: Type.Literal("status"),
    guildId: Type.Optional(Type.String({ description: "Guild ID (optional)" })),
  }),
  Type.Object({
    action: Type.Literal("reset-fallback"),
    guildId: Type.Optional(Type.String({ description: "Guild ID (optional)" })),
  }),
  Type.Object({
    action: Type.Literal("set-stt"),
    provider: Type.String({
      description:
        "STT provider: whisper, gpt4o-mini, gpt4o-transcribe, gpt4o-transcribe-diarize, deepgram, local-whisper, wyoming-whisper",
    }),
    guildId: Type.Optional(Type.String({ description: "Guild ID (optional)" })),
  }),
  Type.Object({
    action: Type.Literal("set-tts"),
    provider: Type.String({ description: "TTS provider: openai, elevenlabs, deepgram, polly, kokoro, edge" }),
    guildId: Type.Optional(Type.String({ description: "Guild ID (optional)" })),
  }),
  Type.Object({
    action: Type.Literal("set-model"),
    model: Type.String({
      description: "LLM model e.g. google-gemini-cli/gemini-3-fast-preview or xai/grok-4-1-fast-non-reasoning",
    }),
    guildId: Type.Optional(Type.String({ description: "Guild ID (optional)" })),
  }),
  Type.Object({
    action: Type.Literal("set-think"),
    level: Type.Union([Type.Literal("off"), Type.Literal("low"), Type.Literal("medium"), Type.Literal("high")]),
    guildId: Type.Optional(Type.String({ description: "Guild ID (optional)" })),
  }),
]);

/** Singleton: prevent duplicate init when plugin is loaded via both openclaw.extensions and clawdbot.extensions */
let discordVoiceRegistered = false;

const discordVoicePlugin = {
  id: "discord-voice",
  name: "Discord Voice",
  description: "Real-time voice conversations in Discord voice channels",

  configSchema: {
    parse(value: unknown): DiscordVoiceConfig {
      return parseConfig(value);
    },
  },

  register(api: PluginApi) {
    if (discordVoiceRegistered) {
      api.logger.warn(
        "[discord-voice] Plugin already registered (likely loaded via both openclaw and clawdbot extensions). Skipping duplicate init to prevent double processing.",
      );
      return;
    }
    discordVoiceRegistered = true;

    const cfg = parseConfig(api.pluginConfig, api.config as Record<string, unknown>);
    let voiceManager: VoiceConnectionManager | null = null;
    let discordClient: Client | null = null;
    let clientReady = false;

    if (!cfg.enabled) {
      discordVoiceRegistered = false;
      api.logger.info("[discord-voice] Plugin disabled");
      return;
    }

    if (process.env["NODE_TLS_REJECT_UNAUTHORIZED"] === "0") {
      api.logger.warn(
        "[discord-voice] NODE_TLS_REJECT_UNAUTHORIZED=0 is set — TLS certificate verification is DISABLED. API keys may be exposed to MITM attacks.",
      );
    }

    if (cfg.allowedUsers.length === 0) {
      api.logger.warn(
        "[discord-voice] No allowedUsers configured — all users in joined channels can interact with the bot and trigger API calls. Set allowedUsers to restrict access.",
      );
    }

    // Get Discord token from main config
    const mainConfig = api.config as { discord?: { token?: string }; channels?: { discord?: { token?: string } } };
    const discordToken = mainConfig?.channels?.discord?.token || mainConfig?.discord?.token;

    if (!discordToken) {
      discordVoiceRegistered = false;
      api.logger.error(
        "[discord-voice] No Discord token found in config. Plugin requires discord.token to be configured.",
      );
      return;
    }

    // Create our own Discord client with voice intents
    discordClient = new Client({
      intents: [GatewayIntentBits.Guilds, GatewayIntentBits.GuildVoiceStates, GatewayIntentBits.GuildMessages],
    });

    discordClient.once("ready", async () => {
      clientReady = true;
      api.logger.info(`[discord-voice] Discord client ready as ${discordClient?.user?.tag}`);

      // Auto-join channel if configured
      if (cfg.autoJoinChannel) {
        try {
          api.logger.info(`[discord-voice] Auto-joining channel ${cfg.autoJoinChannel}`);
          // Wait a moment for everything to initialize
          await new Promise((resolve) => setTimeout(resolve, 2000));

          const channel = await discordClient!.channels.fetch(cfg.autoJoinChannel);
          if (channel && channel.isVoiceBased()) {
            const vm = ensureVoiceManager();
            await vm.join(channel as VoiceBasedChannel);
            api.logger.info(`[discord-voice] Auto-joined voice channel: ${channel.name}`);
          } else {
            api.logger.warn(`[discord-voice] Auto-join channel ${cfg.autoJoinChannel} is not a voice channel`);
          }
        } catch (error) {
          api.logger.error(
            `[discord-voice] Failed to auto-join: ${error instanceof Error ? error.message : String(error)}`,
          );
        }
      }
    });

    discordClient.login(discordToken).catch((err) => {
      api.logger.error(`[discord-voice] Failed to login: ${err instanceof Error ? err.message : String(err)}`);
    });

    /**
     * Handle transcribed speech - route to agent and get response
     */
    async function handleTranscript(userId: string, guildId: string, channelId: string, text: string): Promise<string> {
      api.logger.debug?.(`[discord-voice] Processing transcript from user (${text.length} chars)`);

      try {
        const deps = await loadCoreAgentDeps(cfg.openclawRoot);
        if (!deps) {
          api.logger.error("[discord-voice] Could not load core dependencies");
          return "I'm having trouble connecting to my brain right now.";
        }

        const coreConfig = api.config as CoreConfig;
        const agentId = "main";

        // Build session key based on guild
        const sessionKey = `discord:voice:${guildId}`;

        // Resolve paths
        const storePath = deps.resolveStorePath(coreConfig.session?.store, { agentId });
        const agentDir = deps.resolveAgentDir(coreConfig, agentId);
        const workspaceDir = deps.resolveAgentWorkspaceDir(coreConfig, agentId);

        // Ensure workspace exists
        await deps.ensureAgentWorkspace({ dir: workspaceDir });

        // Load or create session entry
        const sessionStore = deps.loadSessionStore(storePath);
        const now = Date.now();
        type SessionEntry = { sessionId: string; updatedAt: number };
        let sessionEntry = sessionStore[sessionKey] as SessionEntry | undefined;

        if (!sessionEntry) {
          sessionEntry = {
            sessionId: crypto.randomUUID(),
            updatedAt: now,
          };
          sessionStore[sessionKey] = sessionEntry;
          await deps.saveSessionStore(storePath, sessionStore);
        }

        const sessionId = sessionEntry.sessionId;
        const sessionFile = deps.resolveSessionFilePath(sessionId, sessionEntry, { agentId });

        // Session overrides (from /discord_voice set-model, set-think) take precedence over config
        const session = ensureVoiceManager().getSession(guildId);
        const modelRef = session?.modelOverride ?? cfg.model ?? `${deps.DEFAULT_PROVIDER}/${deps.DEFAULT_MODEL}`;
        const slashIndex = modelRef.indexOf("/");
        const provider = slashIndex === -1 ? deps.DEFAULT_PROVIDER : modelRef.slice(0, slashIndex);
        const model = slashIndex === -1 ? modelRef : modelRef.slice(slashIndex + 1);

        const thinkLevel = (session?.thinkLevelOverride ?? cfg.thinkLevel ?? "off") as
          | "off"
          | "low"
          | "medium"
          | "high";

        // Resolve agent identity — sanitize name to prevent prompt injection via config
        const identity = deps.resolveAgentIdentity(coreConfig, agentId);
        const rawName = identity?.name?.trim() || "assistant";
        // eslint-disable-next-line no-control-regex
        const agentName = rawName.replace(/[\u0000-\u001F\u007F]/g, "").slice(0, 100) || "assistant";

        const noEmojiPart =
          cfg.noEmojiHint === false
            ? ""
            : typeof cfg.noEmojiHint === "string"
              ? ` ${sanitizeNoEmojiHint(cfg.noEmojiHint)}`
              : ` ${DEFAULT_NO_EMOJI_HINT}`;
        // Sanitize userId to prevent prompt injection (must be a Discord snowflake)
        const safeUserId = DISCORD_SNOWFLAKE_RE.test(userId) ? userId : "unknown";
        const extraSystemPrompt = `You are ${agentName}, speaking in a Discord voice channel. Keep responses brief and conversational (1-2 sentences max). Be natural and friendly.${noEmojiPart} You have access to all your normal tools and skills. The user's Discord ID is ${safeUserId}. Your reply will be read aloud automatically—do not use the discord_voice speak tool to respond; just return your reply as text.`;

        const timeoutMs = deps.resolveAgentTimeoutMs({ cfg: coreConfig });
        const runId = `discord-voice:${guildId}:${Date.now()}`;

        const result = await deps.runEmbeddedPiAgent({
          sessionId,
          sessionKey,
          messageProvider: "discord",
          sessionFile,
          workspaceDir,
          config: coreConfig,
          prompt: text,
          provider,
          model,
          thinkLevel,
          verboseLevel: "off",
          timeoutMs,
          runId,
          lane: "discord-voice",
          extraSystemPrompt,
          agentDir,
        });

        // Extract text from payloads
        const texts = (result.payloads ?? [])
          .filter((p) => p.text && !p.isError)
          .map((p) => p.text?.trim())
          .filter(Boolean);

        return texts.join(" ") || "";
      } catch (error) {
        api.logger.error(`[discord-voice] Agent chat error: ${error instanceof Error ? error.message : String(error)}`);
        return "I'm sorry, I encountered an error processing your request.";
      }
    }

    /**
     * Ensure voice manager is initialized
     */
    function ensureVoiceManager(): VoiceConnectionManager {
      if (!voiceManager) {
        voiceManager = new VoiceConnectionManager(cfg, api.logger, handleTranscript);
      }
      return voiceManager;
    }

    /**
     * Get Discord client
     */
    function getDiscordClient(): Client | null {
      if (!clientReady) {
        api.logger.warn("[discord-voice] Discord client not ready yet");
        return null;
      }
      return discordClient;
    }

    // Register Gateway RPC methods
    api.registerGatewayMethod("discord_voice.join", async ({ params, respond }) => {
      try {
        const p = params as { channelId?: string } | null;
        const channelId = p?.channelId;

        if (!channelId) {
          respond(false, { error: "channelId required" });
          return;
        }

        const client = getDiscordClient();
        if (!client) {
          respond(false, { error: "Discord client not available" });
          return;
        }

        const channel = await client.channels.fetch(channelId);
        if (!channel || !("guild" in channel) || !channel.isVoiceBased()) {
          respond(false, { error: "Invalid voice channel" });
          return;
        }

        const vm = ensureVoiceManager();
        const session = await vm.join(channel as VoiceBasedChannel);

        respond(true, {
          joined: true,
          guildId: session.guildId,
          channelId: session.channelId,
        });
      } catch (error) {
        respond(false, { error: error instanceof Error ? error.message : String(error) });
      }
    });

    api.registerGatewayMethod("discord_voice.leave", async ({ params, respond }) => {
      try {
        const p = params as { guildId?: string } | null;
        let guildId = p?.guildId;

        const vm = ensureVoiceManager();

        // If no guildId provided, leave all
        if (!guildId) {
          const sessions = vm.getAllSessions();
          const firstSession = sessions[0];
          if (!firstSession) {
            respond(true, { left: false, reason: "Not in any voice channel" });
            return;
          }
          guildId = firstSession.guildId;
        }

        const left = await vm.leave(guildId);
        respond(true, { left, guildId });
      } catch (error) {
        respond(false, { error: error instanceof Error ? error.message : String(error) });
      }
    });

    api.registerGatewayMethod("discord_voice.speak", async ({ params, respond }) => {
      try {
        const p = params as { text?: string; guildId?: string } | null;
        const text = p?.text?.slice(0, MAX_TTS_TEXT_LENGTH);
        let guildId = p?.guildId;

        if (!text) {
          respond(false, { error: "text required" });
          return;
        }

        const vm = ensureVoiceManager();

        if (!guildId) {
          const sessions = vm.getAllSessions();
          const firstSession = sessions[0];
          if (!firstSession) {
            respond(false, { error: "Not in any voice channel" });
            return;
          }
          guildId = firstSession.guildId;
        }

        await vm.speak(guildId, text);
        respond(true, { spoken: true });
      } catch (error) {
        respond(false, { error: error instanceof Error ? error.message : String(error) });
      }
    });

    api.registerGatewayMethod("discord_voice.status", async ({ params, respond }) => {
      try {
        const vm = ensureVoiceManager();
        const p = params as { guildId?: string } | null;
        let guildId = p?.guildId;
        const allSessions = vm.getAllSessions();
        if (!guildId && allSessions.length > 0) guildId = allSessions[0]!.guildId;
        const sessions = allSessions
          .filter((s) => !guildId || s.guildId === guildId)
          .map((s) => {
            const stt = vm.getSttProviderInfo(s);
            const tts = vm.getTtsProviderInfo(s);
            const effectiveModel = s.modelOverride ?? cfg.model ?? "default";
            const effectiveThink = s.thinkLevelOverride ?? cfg.thinkLevel ?? "off";
            return {
              guildId: s.guildId,
              channelId: s.channelId,
              channelName: s.channelName,
              speaking: s.speaking,
              usersListening: s.userAudioStates.size,
              sttProvider: stt.provider,
              sttModel: stt.model,
              ttsProvider: tts.provider,
              ttsModel: tts.model,
              model: effectiveModel,
              thinkLevel: effectiveThink,
            };
          });
        const availableModels = getAvailableModels(api.config as Record<string, unknown>);
        respond(true, {
          sessions,
          config: {
            model: cfg.model,
            thinkLevel: cfg.thinkLevel,
            sttProvider: cfg.sttProvider,
            ttsProvider: cfg.ttsProvider,
          },
          availableModels,
        });
      } catch (error) {
        respond(false, { error: error instanceof Error ? error.message : String(error) });
      }
    });

    api.registerGatewayMethod("discord_voice.set-stt", async ({ params, respond }) => {
      try {
        const p = params as { guildId?: string; provider?: string } | null;
        const provider = p?.provider;
        if (!provider) {
          respond(false, { error: "provider required" });
          return;
        }
        const valid = [
          "whisper",
          "gpt4o-mini",
          "gpt4o-transcribe",
          "gpt4o-transcribe-diarize",
          "deepgram",
          "local-whisper",
          "wyoming-whisper",
        ];
        if (!valid.includes(provider)) {
          respond(false, { error: `Invalid provider. Valid: ${valid.join(", ")}` });
          return;
        }
        const vm = ensureVoiceManager();
        let guildId = p?.guildId;
        if (!guildId) {
          const sessions = vm.getAllSessions();
          if (sessions.length === 0) {
            respond(false, { error: "Not in any voice channel" });
            return;
          }
          guildId = sessions[0]!.guildId;
        }
        const ok = vm.setVoiceConfig(guildId!, {
          sttProvider: provider as DiscordVoiceConfig["sttProvider"],
        });
        respond(ok, ok ? { sttProvider: provider, guildId } : { error: "Session not found" });
      } catch (error) {
        respond(false, { error: error instanceof Error ? error.message : String(error) });
      }
    });

    api.registerGatewayMethod("discord_voice.set-tts", async ({ params, respond }) => {
      try {
        const p = params as { guildId?: string; provider?: string } | null;
        const provider = p?.provider;
        if (!provider) {
          respond(false, { error: "provider required" });
          return;
        }
        const valid = ["openai", "elevenlabs", "deepgram", "polly", "kokoro", "edge"];
        if (!valid.includes(provider)) {
          respond(false, { error: `Invalid provider. Valid: ${valid.join(", ")}` });
          return;
        }
        const vm = ensureVoiceManager();
        let guildId = p?.guildId;
        if (!guildId) {
          const sessions = vm.getAllSessions();
          if (sessions.length === 0) {
            respond(false, { error: "Not in any voice channel" });
            return;
          }
          guildId = sessions[0]!.guildId;
        }
        const ok = vm.setVoiceConfig(guildId!, {
          ttsProvider: provider as DiscordVoiceConfig["ttsProvider"],
        });
        respond(ok, ok ? { ttsProvider: provider, guildId } : { error: "Session not found" });
      } catch (error) {
        respond(false, { error: error instanceof Error ? error.message : String(error) });
      }
    });

    api.registerGatewayMethod("discord_voice.set-model", async ({ params, respond }) => {
      try {
        const p = params as { guildId?: string; model?: string } | null;
        const model = p?.model;
        if (!model || typeof model !== "string" || !model.trim()) {
          respond(false, { error: "model required (e.g. google-gemini-cli/gemini-3-fast-preview)" });
          return;
        }
        const vm = ensureVoiceManager();
        let guildId = p?.guildId;
        if (!guildId) {
          const sessions = vm.getAllSessions();
          if (sessions.length === 0) {
            respond(false, { error: "Not in any voice channel" });
            return;
          }
          guildId = sessions[0]!.guildId;
        }
        const ok = vm.setVoiceConfig(guildId!, { model: model.trim() });
        const available = getAvailableModels(api.config as Record<string, unknown>);
        respond(ok, ok ? { model: model.trim(), guildId, availableModels: available } : { error: "Session not found" });
      } catch (error) {
        respond(false, { error: error instanceof Error ? error.message : String(error) });
      }
    });

    api.registerGatewayMethod("discord_voice.set-think", async ({ params, respond }) => {
      try {
        const p = params as { guildId?: string; level?: string } | null;
        const level = p?.level;
        if (!level) {
          respond(false, { error: "level required: off, low, medium, high" });
          return;
        }
        const valid = ["off", "low", "medium", "high"] as const;
        if (!valid.includes(level as (typeof valid)[number])) {
          respond(false, { error: `Invalid level. Valid: ${valid.join(", ")}` });
          return;
        }
        const vm = ensureVoiceManager();
        let guildId = p?.guildId;
        if (!guildId) {
          const sessions = vm.getAllSessions();
          if (sessions.length === 0) {
            respond(false, { error: "Not in any voice channel" });
            return;
          }
          guildId = sessions[0]!.guildId;
        }
        const ok = vm.setVoiceConfig(guildId!, { thinkLevel: level as (typeof valid)[number] });
        respond(ok, ok ? { thinkLevel: level, guildId } : { error: "Session not found" });
      } catch (error) {
        respond(false, { error: error instanceof Error ? error.message : String(error) });
      }
    });

    api.registerGatewayMethod("discord_voice.models", async ({ respond }) => {
      try {
        const models = getAvailableModels(api.config as Record<string, unknown>);
        respond(true, { availableModels: models });
      } catch (error) {
        respond(false, { error: error instanceof Error ? error.message : String(error) });
      }
    });

    api.registerGatewayMethod("discord_voice.reset-fallback", async ({ params, respond }) => {
      try {
        const vm = ensureVoiceManager();
        const p = params as { guildId?: string } | null;
        let guildId = p?.guildId;
        if (!guildId) {
          const sessions = vm.getAllSessions();
          if (sessions.length === 0) {
            respond(true, { reset: false, reason: "Not in any voice channel" });
            return;
          }
          guildId = sessions[0]!.guildId;
        }
        const reset = vm.resetFallbacks(guildId!);
        respond(true, { reset, guildId });
      } catch (error) {
        respond(false, { error: error instanceof Error ? error.message : String(error) });
      }
    });

    // Register agent tool
    api.registerTool({
      name: "discord_voice",
      label: "Discord Voice",
      description: "Control Discord voice channel - join, leave, speak, or get status",
      parameters: VoiceToolSchema,
      async execute(_toolCallId, params) {
        const json = (payload: unknown) => ({
          content: [{ type: "text", text: JSON.stringify(payload, null, 2) }],
          details: payload,
        });

        try {
          const p = params as { action: string; channelId?: string; guildId?: string; text?: string };
          const vm = ensureVoiceManager();
          const client = getDiscordClient();

          switch (p.action) {
            case "join": {
              if (!p.channelId) throw new Error("channelId required");
              if (!client) throw new Error("Discord client not available");

              const channel = await client.channels.fetch(p.channelId);
              if (!channel || !("guild" in channel) || !channel.isVoiceBased()) {
                throw new Error("Invalid voice channel");
              }

              const session = await vm.join(channel as VoiceBasedChannel);
              return json({ joined: true, guildId: session.guildId, channelId: session.channelId });
            }

            case "leave": {
              let guildId = p.guildId;
              if (!guildId) {
                const sessions = vm.getAllSessions();
                const firstSession = sessions[0];
                if (!firstSession) {
                  return json({ left: false, reason: "Not in any voice channel" });
                }
                guildId = firstSession.guildId;
              }
              const left = await vm.leave(guildId);
              return json({ left, guildId });
            }

            case "speak": {
              if (!p.text) throw new Error("text required");
              p.text = p.text.slice(0, MAX_TTS_TEXT_LENGTH);
              let guildId = p.guildId;
              if (!guildId) {
                const sessions = vm.getAllSessions();
                const firstSession = sessions[0];
                if (!firstSession) {
                  throw new Error("Not in any voice channel");
                }
                guildId = firstSession.guildId;
              }
              vm.markSpokeViaTool(guildId);
              await vm.speak(guildId, p.text);
              return json({ spoken: true });
            }

            case "status": {
              const sessions = vm.getAllSessions().map((s) => {
                const stt = vm.getSttProviderInfo(s);
                const tts = vm.getTtsProviderInfo(s);
                return {
                  guildId: s.guildId,
                  channelId: s.channelId,
                  channelName: s.channelName,
                  speaking: s.speaking,
                  usersListening: s.userAudioStates.size,
                  sttProvider: stt.provider,
                  sttModel: stt.model,
                  ttsProvider: tts.provider,
                  ttsModel: tts.model,
                  model: s.modelOverride ?? cfg.model ?? "default",
                  thinkLevel: s.thinkLevelOverride ?? cfg.thinkLevel ?? "off",
                };
              });
              const availableModels = getAvailableModels(api.config as Record<string, unknown>);
              return json({ sessions, availableModels });
            }

            case "set-stt": {
              const provider = (p as { provider?: string }).provider;
              if (!provider) throw new Error("provider required");
              const valid = [
                "whisper",
                "gpt4o-mini",
                "gpt4o-transcribe",
                "gpt4o-transcribe-diarize",
                "deepgram",
                "local-whisper",
                "wyoming-whisper",
              ];
              if (!valid.includes(provider)) throw new Error(`Invalid provider. Valid: ${valid.join(", ")}`);
              let guildId = (p as { guildId?: string }).guildId;
              if (!guildId) {
                const sessions = vm.getAllSessions();
                if (sessions.length === 0) throw new Error("Not in any voice channel");
                guildId = sessions[0]!.guildId;
              }
              const ok = vm.setVoiceConfig(guildId!, {
                sttProvider: provider as DiscordVoiceConfig["sttProvider"],
              });
              return json(ok ? { sttProvider: provider, guildId } : { error: "Session not found" });
            }

            case "set-tts": {
              const provider = (p as { provider?: string }).provider;
              if (!provider) throw new Error("provider required");
              const valid = ["openai", "elevenlabs", "deepgram", "polly", "kokoro", "edge"];
              if (!valid.includes(provider)) throw new Error(`Invalid provider. Valid: ${valid.join(", ")}`);
              let guildId = (p as { guildId?: string }).guildId;
              if (!guildId) {
                const sessions = vm.getAllSessions();
                if (sessions.length === 0) throw new Error("Not in any voice channel");
                guildId = sessions[0]!.guildId;
              }
              const ok = vm.setVoiceConfig(guildId!, {
                ttsProvider: provider as DiscordVoiceConfig["ttsProvider"],
              });
              return json(ok ? { ttsProvider: provider, guildId } : { error: "Session not found" });
            }

            case "set-model": {
              const model = (p as { model?: string }).model;
              if (!model || typeof model !== "string" || !model.trim()) throw new Error("model required");
              let guildId = (p as { guildId?: string }).guildId;
              if (!guildId) {
                const sessions = vm.getAllSessions();
                if (sessions.length === 0) throw new Error("Not in any voice channel");
                guildId = sessions[0]!.guildId;
              }
              const ok = vm.setVoiceConfig(guildId!, { model: model.trim() });
              const available = getAvailableModels(api.config as Record<string, unknown>);
              return json(
                ok ? { model: model.trim(), guildId, availableModels: available } : { error: "Session not found" },
              );
            }

            case "set-think": {
              const level = (p as { level?: string }).level;
              if (!level) throw new Error("level required: off, low, medium, high");
              const valid = ["off", "low", "medium", "high"];
              if (!valid.includes(level)) throw new Error(`Invalid level. Valid: ${valid.join(", ")}`);
              let guildId = (p as { guildId?: string }).guildId;
              if (!guildId) {
                const sessions = vm.getAllSessions();
                if (sessions.length === 0) throw new Error("Not in any voice channel");
                guildId = sessions[0]!.guildId;
              }
              const ok = vm.setVoiceConfig(guildId!, { thinkLevel: level as "off" | "low" | "medium" | "high" });
              return json(ok ? { thinkLevel: level, guildId } : { error: "Session not found" });
            }

            case "reset-fallback": {
              let guildId = p.guildId;
              if (!guildId) {
                const sessions = vm.getAllSessions();
                if (sessions.length === 0) return json({ reset: false, reason: "Not in any voice channel" });
                guildId = sessions[0]!.guildId;
              }
              const reset = vm.resetFallbacks(guildId!);
              return json({ reset, guildId });
            }

            default:
              throw new Error(`Unknown action: ${p.action}`);
          }
        } catch (error) {
          return json({ error: error instanceof Error ? error.message : String(error) });
        }
      },
    });

    // Register CLI commands
    api.registerCli(
      ({ program }) => {
        interface CliCommand {
          command(name: string): CliCommand;
          description(desc: string): CliCommand;
          argument(name: string, desc: string): CliCommand;
          option(flags: string, desc: string): CliCommand;
          action(fn: (...args: never[]) => void | Promise<void>): CliCommand;
        }
        const prog = program as CliCommand;

        const voiceCmd = prog.command("discord_voice").description("Discord voice channel commands");

        voiceCmd
          .command("join")
          .description("Join a Discord voice channel")
          .argument("<channelId>", "Voice channel ID")
          .action(async (channelId: string) => {
            const client = getDiscordClient();
            if (!client) {
              console.error("Discord client not available");
              return;
            }

            try {
              const channel = await client.channels.fetch(channelId);
              if (!channel || !("guild" in channel) || !channel.isVoiceBased()) {
                console.error("Invalid voice channel");
                return;
              }

              const vm = ensureVoiceManager();
              const session = await vm.join(channel as VoiceBasedChannel);
              console.log(`Joined voice channel in guild ${session.guildId}`);
            } catch (error) {
              console.error(`Failed to join: ${error instanceof Error ? error.message : String(error)}`);
            }
          });

        voiceCmd
          .command("leave")
          .description("Leave the current voice channel")
          .option("-g, --guild <guildId>", "Guild ID")
          .action(async (opts: { guild?: string }) => {
            const vm = ensureVoiceManager();
            const guildId = opts.guild || vm.getAllSessions()[0]?.guildId;

            if (!guildId) {
              console.log("Not in any voice channel");
              return;
            }

            const left = await vm.leave(guildId);
            console.log(left ? `Left voice channel in guild ${guildId}` : "Failed to leave");
          });

        voiceCmd
          .command("status")
          .description("Show voice connection status and providers")
          .action(() => {
            const vm = ensureVoiceManager();
            const sessions = vm.getAllSessions();

            if (sessions.length === 0) {
              console.log("Not connected to any voice channels");
              return;
            }

            const models = getAvailableModels(api.config as Record<string, unknown>);
            if (models.length > 0) {
              console.log("Available models:", models.join(", "));
            }

            for (const s of sessions) {
              const stt = vm.getSttProviderInfo(s);
              const tts = vm.getTtsProviderInfo(s);
              const model = s.modelOverride ?? cfg.model ?? "default";
              const think = s.thinkLevelOverride ?? cfg.thinkLevel ?? "off";
              console.log(`Guild: ${s.guildId}`);
              console.log(`  Channel: ${s.channelId} ${s.channelName ? `(${s.channelName})` : ""}`);
              console.log(`  Speaking: ${s.speaking}`);
              console.log(`  Users listening: ${s.userAudioStates.size}`);
              console.log(`  STT: ${stt.provider} / ${stt.model}`);
              console.log(`  TTS: ${tts.provider} / ${tts.model}`);
              console.log(`  Model: ${model}, Think: ${think}`);
            }
          });

        voiceCmd
          .command("set-stt")
          .description("Set STT provider for current session")
          .argument(
            "<provider>",
            "whisper | gpt4o-mini | gpt4o-transcribe | gpt4o-transcribe-diarize | deepgram | local-whisper | wyoming-whisper",
          )
          .option("-g, --guild <guildId>", "Guild ID")
          .action(async (provider: string, opts: { guild?: string }) => {
            const vm = ensureVoiceManager();
            const guildId = opts.guild || vm.getAllSessions()[0]?.guildId;
            if (!guildId) {
              console.log("Not in any voice channel");
              return;
            }
            const valid = [
              "whisper",
              "gpt4o-mini",
              "gpt4o-transcribe",
              "gpt4o-transcribe-diarize",
              "deepgram",
              "local-whisper",
              "wyoming-whisper",
            ];
            if (!valid.includes(provider)) {
              console.error(`Invalid provider. Valid: ${valid.join(", ")}`);
              return;
            }
            const ok = vm.setVoiceConfig(guildId, {
              sttProvider: provider as DiscordVoiceConfig["sttProvider"],
            });
            console.log(ok ? `STT provider set to ${provider}` : "Session not found");
          });

        voiceCmd
          .command("set-tts")
          .description("Set TTS provider for current session")
          .argument("<provider>", "openai | elevenlabs | deepgram | polly | kokoro | edge")
          .option("-g, --guild <guildId>", "Guild ID")
          .action(async (provider: string, opts: { guild?: string }) => {
            const vm = ensureVoiceManager();
            const guildId = opts.guild || vm.getAllSessions()[0]?.guildId;
            if (!guildId) {
              console.log("Not in any voice channel");
              return;
            }
            const valid = ["openai", "elevenlabs", "deepgram", "polly", "kokoro", "edge"];
            if (!valid.includes(provider)) {
              console.error(`Invalid provider. Valid: ${valid.join(", ")}`);
              return;
            }
            const ok = vm.setVoiceConfig(guildId, {
              ttsProvider: provider as DiscordVoiceConfig["ttsProvider"],
            });
            console.log(ok ? `TTS provider set to ${provider}` : "Session not found");
          });

        voiceCmd
          .command("set-model")
          .description("Set LLM model for voice responses (e.g. google-gemini-cli/gemini-3-fast-preview)")
          .argument("<model>", "Model ID: provider/model-name")
          .option("-g, --guild <guildId>", "Guild ID")
          .action(async (model: string, opts: { guild?: string }) => {
            const vm = ensureVoiceManager();
            const guildId = opts.guild || vm.getAllSessions()[0]?.guildId;
            if (!guildId) {
              console.log("Not in any voice channel");
              return;
            }
            const ok = vm.setVoiceConfig(guildId, { model: model.trim() });
            if (ok) {
              const available = getAvailableModels(api.config as Record<string, unknown>);
              console.log(`Model set to ${model}`);
              if (available.length > 0 && !available.includes(model)) {
                console.log("Note: Available models in config:", available.join(", "));
              }
            } else {
              console.log("Session not found");
            }
          });

        voiceCmd
          .command("set-think")
          .description("Set thinking level (off | low | medium | high)")
          .argument("<level>", "off | low | medium | high")
          .option("-g, --guild <guildId>", "Guild ID")
          .action(async (level: string, opts: { guild?: string }) => {
            const vm = ensureVoiceManager();
            const guildId = opts.guild || vm.getAllSessions()[0]?.guildId;
            if (!guildId) {
              console.log("Not in any voice channel");
              return;
            }
            const valid = ["off", "low", "medium", "high"];
            if (!valid.includes(level)) {
              console.error(`Invalid level. Valid: ${valid.join(", ")}`);
              return;
            }
            const ok = vm.setVoiceConfig(guildId, { thinkLevel: level as "off" | "low" | "medium" | "high" });
            console.log(ok ? `Think level set to ${level}` : "Session not found");
          });

        voiceCmd
          .command("reset-fallback")
          .description("Reset STT/TTS fallbacks – next request will try primary providers")
          .option("-g, --guild <guildId>", "Guild ID")
          .action(async (opts: { guild?: string }) => {
            const vm = ensureVoiceManager();
            const guildId = opts.guild || vm.getAllSessions()[0]?.guildId;

            if (!guildId) {
              console.log("Not in any voice channel");
              return;
            }

            const reset = vm.resetFallbacks(guildId);
            console.log(reset ? `Reset fallbacks for guild ${guildId}` : `No active fallbacks for guild ${guildId}`);
          });
      },
      { commands: ["discord_voice"] },
    );

    // Register background service
    api.registerService({
      id: "discord-voice",
      start: async () => {
        api.logger.info("[discord-voice] Service started");
      },
      stop: async () => {
        if (voiceManager) {
          await voiceManager.destroy();
          voiceManager = null;
        }
        discordVoiceRegistered = false;
        api.logger.info("[discord-voice] Service stopped");
      },
    });
  },
};

export default discordVoicePlugin;


path: openclaw.plugin.json
content: {
  "id": "discord-voice",
  "name": "Discord Voice",
  "description": "Real-time voice conversations in Discord voice channels",
  "requirements": {
    "config": {
      "discord.token": {
        "required": true,
        "description": "Discord bot token (via channels.discord.token or discord.token in main config)"
      }
    },
    "env": {
      "OPENAI_API_KEY": {
        "required": false,
        "description": "OpenAI API key — needed for whisper STT and openai TTS providers (fallback if not set in plugin config)"
      },
      "ELEVENLABS_API_KEY": {
        "required": false,
        "description": "ElevenLabs API key — needed for elevenlabs TTS provider (fallback if not set in plugin config)"
      },
      "DEEPGRAM_API_KEY": {
        "required": false,
        "description": "Deepgram API key — needed for deepgram STT provider (fallback if not set in plugin config)"
      }
    },
    "systemDependencies": ["ffmpeg"]
  },
  "configSchema": {
    "type": "object",
    "additionalProperties": true,
    "properties": {
      "enabled": { "type": "boolean", "default": true },
      "sttProvider": {
        "type": "string",
        "enum": [
          "whisper",
          "gpt4o-mini",
          "gpt4o-transcribe",
          "gpt4o-transcribe-diarize",
          "deepgram",
          "local-whisper",
          "wyoming-whisper"
        ],
        "default": "whisper",
        "description": "whisper, gpt4o-*, deepgram, local-whisper, or wyoming-whisper (remote Wyoming Faster Whisper)"
      },
      "sttFallbackProvider": {
        "type": "string",
        "enum": [
          "whisper",
          "gpt4o-mini",
          "gpt4o-transcribe",
          "gpt4o-transcribe-diarize",
          "deepgram",
          "local-whisper",
          "wyoming-whisper"
        ],
        "description": "Single fallback STT (legacy). Prefer sttFallbackProviders for multiple fallbacks."
      },
      "sttFallbackProviders": {
        "type": "array",
        "items": {
          "type": "string",
          "enum": [
            "whisper",
            "gpt4o-mini",
            "gpt4o-transcribe",
            "gpt4o-transcribe-diarize",
            "deepgram",
            "local-whisper",
            "wyoming-whisper"
          ]
        },
        "description": "Fallback STT providers when primary fails (quota, rate limit, Wyoming unreachable)"
      },
      "streamingSTT": {
        "type": "boolean",
        "default": true,
        "description": "Use streaming STT for lower latency (Deepgram only)"
      },
      "ttsProvider": {
        "type": "string",
        "enum": ["openai", "elevenlabs", "deepgram", "polly", "edge", "kokoro"],
        "default": "openai",
        "description": "openai, elevenlabs, deepgram, polly, edge (free), or kokoro (free local)"
      },
      "ttsVoice": { "type": "string", "default": "nova" },
      "vadSensitivity": {
        "type": "string",
        "enum": ["low", "medium", "high"],
        "default": "medium"
      },
      "bargeIn": {
        "type": "boolean",
        "default": true,
        "description": "Stop speaking when user starts talking"
      },
      "model": {
        "type": "string",
        "description": "LLM model for voice responses (e.g. anthropic/claude-3-5-haiku-latest)"
      },
      "thinkLevel": {
        "type": "string",
        "enum": ["off", "low", "medium", "high"],
        "default": "off",
        "description": "Thinking level for voice responses (lower = faster)"
      },
      "noEmojiHint": {
        "oneOf": [{ "type": "boolean" }, { "type": "string" }],
        "default": true,
        "description": "Inject TTS hint: true = default 'no emojis' text, false = off, string = custom text"
      },
      "ttsFallbackProvider": {
        "type": "string",
        "enum": ["openai", "elevenlabs", "deepgram", "polly", "edge", "kokoro"],
        "description": "Single fallback TTS (legacy). Prefer ttsFallbackProviders for multiple fallbacks."
      },
      "ttsFallbackProviders": {
        "type": "array",
        "items": { "type": "string", "enum": ["openai", "elevenlabs", "deepgram", "polly", "edge", "kokoro"] },
        "description": "Fallback TTS providers tried in order when primary fails (quota/rate limit)"
      },
      "allowedUsers": { "type": "array", "items": { "type": "string" }, "default": [] },
      "silenceThresholdMs": { "type": "number", "default": 1500 },
      "minAudioMs": { "type": "number", "default": 500 },
      "maxRecordingMs": { "type": "number", "default": 30000 },
      "heartbeatIntervalMs": {
        "type": "number",
        "default": 30000,
        "description": "Connection health check interval in ms"
      },
      "autoJoinChannel": { "type": "string", "description": "Voice channel ID to auto-join on startup" },
      "openclawRoot": {
        "type": "string",
        "description": "OpenClaw package root if auto-detection fails (path containing dist/extensionAPI.js)"
      },
      "thinkingSound": {
        "type": "object",
        "properties": {
          "enabled": { "type": "boolean", "default": true, "description": "Play sound while processing" },
          "path": {
            "type": "string",
            "default": "assets/thinking.mp3",
            "description": "Path to MP3 (relative to plugin root or absolute)"
          },
          "volume": { "type": "number", "default": 0.7, "minimum": 0, "maximum": 1, "description": "Volume 0-1" },
          "stopDelayMs": { "type": "number", "default": 50 }
        }
      },
      "openai": {
        "type": "object",
        "properties": {
          "apiKey": { "type": "string" },
          "whisperModel": { "type": "string", "default": "whisper-1" },
          "ttsModel": { "type": "string", "default": "tts-1" },
          "voice": {
            "type": "string",
            "default": "nova",
            "description": "nova, shimmer, echo, onyx, fable, alloy, ash, sage, coral"
          }
        }
      },
      "polly": {
        "type": "object",
        "properties": {
          "region": { "type": "string", "default": "us-east-1" },
          "voiceId": { "type": "string", "default": "Joanna" },
          "engine": { "type": "string", "enum": ["standard", "neural", "long-form", "generative"] },
          "accessKeyId": { "type": "string" },
          "secretAccessKey": { "type": "string" }
        }
      },
      "edge": {
        "type": "object",
        "properties": {
          "voice": {
            "type": "string",
            "default": "de-DE-KatjaNeural",
            "description": "Edge neural voice (e.g. de-DE-KatjaNeural, en-US-MichelleNeural)"
          },
          "lang": { "type": "string", "default": "de-DE", "description": "Language code (e.g. de-DE, en-US)" },
          "outputFormat": {
            "type": "string",
            "default": "webm-24khz-16bit-mono-opus",
            "description": "Output format for Discord"
          },
          "rate": { "type": "string", "description": "Speech rate (e.g. +10%, -5%)" },
          "pitch": { "type": "string", "description": "Pitch (e.g. +10%, -5%)" },
          "volume": { "type": "string", "description": "Volume (e.g. +10%, -5%)" },
          "proxy": { "type": "string", "description": "Proxy URL for requests" },
          "timeoutMs": { "type": "number", "description": "Request timeout in ms" }
        }
      },
      "kokoro": {
        "type": "object",
        "properties": {
          "voice": { "type": "string", "default": "af_heart", "description": "af_heart, af_bella, af_nicole, etc." },
          "modelId": { "type": "string" },
          "dtype": { "type": "string", "enum": ["fp32", "fp16", "q8", "q4", "q4f16"], "default": "fp32" }
        }
      },
      "elevenlabs": {
        "type": "object",
        "properties": {
          "apiKey": { "type": "string" },
          "voiceId": { "type": "string" },
          "modelId": {
            "type": "string",
            "default": "eleven_turbo_v2_5",
            "description": "turbo, flash, v2, v3, or full model ID (eleven_turbo_v2_5, eleven_flash_v2_5, eleven_multilingual_v2, eleven_multilingual_v3)"
          }
        }
      },
      "deepgram": {
        "type": "object",
        "properties": {
          "apiKey": { "type": "string" },
          "model": { "type": "string", "default": "nova-2" },
          "ttsModel": {
            "type": "string",
            "default": "aura-asteria-en",
            "description": "TTS model: aura-asteria-en, aura-2-thalia-en, etc."
          }
        }
      },
      "wyomingWhisper": {
        "type": "object",
        "properties": {
          "host": { "type": "string", "default": "127.0.0.1", "description": "Wyoming server host" },
          "port": { "type": "number", "default": 10300, "description": "Wyoming server port" },
          "uri": { "type": "string", "description": "Alternative: host:port or tcp://host:port" },
          "language": { "type": "string", "description": "Language hint (e.g. de, en)" },
          "connectTimeoutMs": { "type": "number", "default": 10000, "description": "Timeout incl. processing" }
        },
        "description": "Wyoming Faster Whisper (remote STT over TCP)"
      },
      "localWhisper": {
        "type": "object",
        "properties": { "model": { "type": "string" }, "quantized": { "type": "boolean" } },
        "description": "Local Whisper STT (Xenova)"
      }
    }
  },
  "uiHints": {
    "enabled": {
      "label": "Enable Discord Voice",
      "help": "Enable real-time voice conversations in Discord voice channels"
    },
    "sttProvider": {
      "label": "Speech-to-Text Provider",
      "help": "whisper, gpt4o-mini, deepgram, local-whisper, or wyoming-whisper (remote)"
    },
    "ttsProvider": {
      "label": "Text-to-Speech Provider",
      "help": "openai, elevenlabs, deepgram, polly, edge, or kokoro"
    },
    "ttsVoice": {
      "label": "TTS Voice (deprecated)",
      "help": "Use openai.voice, elevenlabs.voiceId, edge.voice, kokoro.voice instead"
    },
    "ttsFallbackProviders": {
      "label": "TTS Fallback Providers",
      "help": "Fallbacks tried in order when primary fails (quota/rate limit). E.g. [\"edge\", \"polly\", \"kokoro\"]"
    },
    "openai.voice": {
      "label": "OpenAI TTS Voice",
      "help": "nova, shimmer, echo, onyx, fable, alloy, ash, sage, coral"
    },
    "edge.voice": { "label": "Edge TTS Voice", "help": "de-DE-KatjaNeural, en-US-MichelleNeural, etc." },
    "kokoro.voice": { "label": "Kokoro TTS Voice", "help": "af_heart, af_bella, af_nicole, etc." },
    "vadSensitivity": { "label": "VAD Sensitivity", "help": "Voice activity detection sensitivity (low/medium/high)" },
    "allowedUsers": { "label": "Allowed Users", "help": "Discord user IDs allowed to use voice (empty = all allowed)" },
    "openai.apiKey": { "label": "OpenAI API Key", "sensitive": true },
    "elevenlabs.apiKey": { "label": "ElevenLabs API Key", "sensitive": true },
    "elevenlabs.modelId": { "label": "ElevenLabs Model", "help": "turbo, flash, v2, v3 (or full model ID)" },
    "deepgram.apiKey": { "label": "Deepgram API Key", "sensitive": true },
    "thinkingSound.enabled": { "label": "Thinking Sound", "help": "Play sound while processing (default: on)" },
    "thinkingSound.path": { "label": "Thinking Sound File", "help": "Path to MP3 (default: assets/thinking.mp3)" },
    "thinkingSound.volume": { "label": "Thinking Sound Volume", "help": "Volume 0-1 (default: 0.7)" }
  }
}


path: package.json
content: {
  "name": "@clawdbot/discord-voice",
  "version": "0.1.5",
  "description": "Discord voice channel plugin for OpenClaw - real-time voice conversations",
  "keywords": [
    "ai",
    "claude",
    "deepgram",
    "discord",
    "elevenlabs",
    "openclaw",
    "speech-to-text",
    "text-to-speech",
    "voice",
    "whisper"
  ],
  "license": "MIT",
  "author": "Discord Voice Plugin Contributors",
  "repository": {
    "type": "git",
    "url": "https://github.com/clawdbot/discord-voice"
  },
  "type": "module",
  "main": "index.ts",
  "scripts": {
    "typecheck": "tsc --noEmit",
    "smoke-test": "node scripts/smoke-test.mjs",
    "build": "tsc",
    "watch": "tsc -w",
    "lint": "oxlint",
    "lint:fix": "oxlint --fix",
    "fmt": "oxfmt",
    "fmt:check": "oxfmt --check",
    "check": "npm run lint && npm run typecheck",
    "fix": "npm run fmt && npm run lint:fix"
  },
  "dependencies": {
    "@aws-sdk/client-polly": "^3.990.0",
    "@deepgram/sdk": "^4.11.3",
    "@discordjs/voice": "^0.19.0",
    "@sinclair/typebox": "^0.34.48",
    "@xenova/transformers": "^2.17.2",
    "discord.js": "^14.16.3",
    "emoji-regex": "^10.6.0",
    "hono": "^4.11.9",
    "kokoro-js": "^1.2.1",
    "libsodium-wrappers": "^0.8.2",
    "node-edge-tts": "^1.2.10",
    "opusscript": "^0.0.8",
    "prism-media": "^1.3.5",
    "wavefile": "^11.0.0",
    "ws": "^8.18.0"
  },
  "devDependencies": {
    "@types/node": "^25.0.10",
    "@types/ws": "^8.18.0",
    "oxfmt": "^0.32.0",
    "oxlint": "^1.48.0",
    "typescript": "^5.9.3"
  },
  "overrides": {
    "tar": "^7.5.9",
    "undici": "^7.22.0"
  },
  "peerDependencies": {
    "openclaw": ">=2025.0.0"
  },
  "clawdbot": {
    "extensions": [
      "./index.ts"
    ]
  },
  "openclaw": {
    "extensions": [
      "./index.ts"
    ]
  }
}


path: scripts/smoke-test.mjs
content: #!/usr/bin/env node
/**
 * Smoke test: verify discord-voice plugin structure and core-bridge.
 * Run: node scripts/smoke-test.mjs
 * For full test: OPENCLAW_ROOT=/path/to/openclaw node scripts/smoke-test.mjs
 */

import { createRequire } from "node:module";
import { fileURLToPath, pathToFileURL } from "node:url";
import { dirname, join } from "node:path";
import { existsSync, readFileSync } from "node:fs";

const require = createRequire(import.meta.url);
const __dirname = dirname(fileURLToPath(import.meta.url));
const root = join(__dirname, "..");

const results = [];
function ok(msg) {
  results.push({ ok: true, msg });
  console.log("  ✓", msg);
}
function fail(msg) {
  results.push({ ok: false, msg });
  console.log("  ✗", msg);
}

console.log("\n[discord-voice] Smoke test\n");

// 1. Package manifest
const pkg = require(join(root, "package.json"));
if (pkg.openclaw?.extensions?.length) {
  ok("package.json: openclaw.extensions present");
} else {
  fail("package.json: openclaw.extensions missing");
}

// 2. Plugin manifest
const pluginPath = join(root, "openclaw.plugin.json");
if (existsSync(pluginPath)) {
  const manifest = require(pluginPath);
  if (manifest.id === "discord-voice" && manifest.configSchema) {
    ok("openclaw.plugin.json: id and configSchema present");
  } else {
    fail("openclaw.plugin.json: invalid structure");
  }
} else {
  fail("openclaw.plugin.json missing");
}

// 3. Entry file
const entryPath = join(root, pkg.openclaw?.extensions?.[0] || "index.ts");
if (existsSync(entryPath)) {
  ok("Entry file exists: " + (pkg.openclaw?.extensions?.[0] || "index.ts"));
} else {
  fail("Entry file missing");
}

// 4. Core bridge API alignment (extensionAPI expectations) (extensionAPI exports)
const expectedExports = [
  "resolveAgentDir",
  "resolveAgentWorkspaceDir",
  "resolveAgentIdentity",
  "resolveThinkingDefault",
  "runEmbeddedPiAgent",
  "resolveAgentTimeoutMs",
  "ensureAgentWorkspace",
  "resolveStorePath",
  "loadSessionStore",
  "saveSessionStore",
  "resolveSessionFilePath",
  "DEFAULT_MODEL",
  "DEFAULT_PROVIDER",
];
const coreBridgePath = join(root, "src/core-bridge.ts");
if (existsSync(coreBridgePath)) {
  const content = readFileSync(coreBridgePath, "utf8");
  const missing = expectedExports.filter((e) => !content.includes(e));
  if (missing.length === 0) {
    ok("core-bridge.ts: expects all extensionAPI exports");
  } else {
    fail("core-bridge.ts: missing refs: " + missing.join(", "));
  }
  if (content.includes("openclaw") && content.includes("extensionAPI.js")) {
    ok("core-bridge.ts: uses openclaw + extensionAPI.js");
  } else {
    fail("core-bridge.ts: not aligned with OpenClaw extensionAPI");
  }
  if (!content.includes("clawdbot") && !content.includes("CLAWDBOT_ROOT")) {
    ok("core-bridge.ts: no clawdbot/CLAWDBOT_ROOT remnants");
  } else {
    fail("core-bridge.ts: still references clawdbot");
  }
} else {
  fail("src/core-bridge.ts missing");
}

// 5. Local providers (local-whisper, kokoro) from PR #2
const sttPath = join(root, "src", "stt.ts");
const ttsPath = join(root, "src", "tts.ts");
if (existsSync(sttPath)) {
  const sttContent = readFileSync(sttPath, "utf8");
  if (sttContent.includes("LocalWhisperSTT") && sttContent.includes('case "local-whisper"')) {
    ok("stt.ts: LocalWhisperSTT and local-whisper provider present");
  } else {
    fail("stt.ts: LocalWhisperSTT or local-whisper case missing");
  }
  if (sttContent.includes("WyomingWhisperSTT") && sttContent.includes('case "wyoming-whisper"')) {
    ok("stt.ts: WyomingWhisperSTT and wyoming-whisper provider present");
  } else {
    fail("stt.ts: WyomingWhisperSTT or wyoming-whisper case missing");
  }
} else {
  fail("src/stt.ts missing");
}
if (existsSync(ttsPath)) {
  const ttsContent = readFileSync(ttsPath, "utf8");
  if (ttsContent.includes("KokoroTTSProvider") && ttsContent.includes('case "kokoro"')) {
    ok("tts.ts: KokoroTTSProvider and kokoro provider present");
  } else {
    fail("tts.ts: KokoroTTSProvider or kokoro case missing");
  }
  if (ttsContent.includes("EdgeTTSProvider") && ttsContent.includes('case "edge"')) {
    ok("tts.ts: EdgeTTSProvider and edge provider present");
  } else {
    fail("tts.ts: EdgeTTSProvider or edge case missing");
  }
  if (ttsContent.includes("DeepgramTTS") && ttsContent.includes('case "deepgram"')) {
    ok("tts.ts: DeepgramTTS and deepgram provider present");
  } else {
    fail("tts.ts: DeepgramTTS or deepgram case missing");
  }
  if (ttsContent.includes("PollyTTS") && ttsContent.includes('case "polly"')) {
    ok("tts.ts: PollyTTS and polly provider present");
  } else {
    fail("tts.ts: PollyTTS or polly case missing");
  }
} else {
  fail("src/tts.ts missing");
}

// 6. Optional: load extensionAPI if OPENCLAW_ROOT set
const openclawRoot = process.env.OPENCLAW_ROOT?.trim();
if (openclawRoot) {
  const extPath = join(openclawRoot, "dist", "extensionAPI.js");
  if (existsSync(extPath)) {
    try {
      const ext = await import(pathToFileURL(extPath).href);
      const hasAll = expectedExports.every((e) => typeof ext[e] === "function" || typeof ext[e] === "string");
      if (hasAll) {
        ok("extensionAPI.js: all exports present (OPENCLAW_ROOT)");
      } else {
        const missing = expectedExports.filter((e) => typeof ext[e] !== "function" && typeof ext[e] !== "string");
        fail("extensionAPI.js: missing " + missing.join(", "));
      }
    } catch (err) {
      fail("extensionAPI.js load failed: " + err.message);
    }
  } else {
    fail("OPENCLAW_ROOT/dist/extensionAPI.js not found (run 'pnpm build' in OpenClaw)");
  }
} else {
  console.log("  (skip) OPENCLAW_ROOT not set – extensionAPI load not tested");
}

const failed = results.filter((r) => !r.ok);
console.log("\n" + (failed.length === 0 ? "All checks passed." : `Failed: ${failed.length}`) + "\n");
process.exit(failed.length > 0 ? 1 : 0);


path: src/config.ts
content: /**
 * Discord Voice Plugin Configuration
 */

// Placeholder for core TTS config compatibility
export interface VoiceCallTtsConfig {
  enabled?: boolean;
  voice?: string;
  [key: string]: unknown;
}

export interface DiscordVoiceConfig {
  enabled: boolean;
  sttProvider:
    | "whisper"
    | "gpt4o-mini"
    | "gpt4o-transcribe"
    | "gpt4o-transcribe-diarize"
    | "deepgram"
    | "local-whisper"
    | "wyoming-whisper";
  /** Fallback STT providers when primary fails (quota, rate limit, unreachable), tried in order */
  sttFallbackProviders?: readonly (
    | "whisper"
    | "gpt4o-mini"
    | "gpt4o-transcribe"
    | "gpt4o-transcribe-diarize"
    | "deepgram"
    | "local-whisper"
    | "wyoming-whisper"
  )[];
  streamingSTT: boolean; // Use streaming STT (Deepgram only) for lower latency
  ttsProvider: "openai" | "elevenlabs" | "deepgram" | "polly" | "kokoro" | "edge";
  ttsVoice: string;
  /** Fallback TTS providers when primary fails (quota, rate limit), tried in order. E.g. ["edge", "kokoro"] */
  ttsFallbackProviders?: readonly ("openai" | "elevenlabs" | "deepgram" | "polly" | "kokoro" | "edge")[];
  vadSensitivity: "low" | "medium" | "high";
  bargeIn: boolean; // Stop speaking when user starts talking
  allowedUsers: string[];
  silenceThresholdMs: number;
  minAudioMs: number;
  maxRecordingMs: number;
  autoJoinChannel?: string; // Channel ID to auto-join on startup
  heartbeatIntervalMs?: number; // Connection health check interval
  /** OpenClaw package root (if auto-detection fails); path to openclaw package dir containing dist/extensionAPI.js */
  openclawRoot?: string;

  /** Thinking sound played while processing; path relative to plugin root or absolute */
  thinkingSound?: {
    enabled?: boolean;
    path?: string; // default: "assets/thinking.mp3"
    volume?: number; // 0–1, default 0.7
    stopDelayMs?: number; // delay after stopping before response (default 50, was 100)
  };

  // LLM settings for voice responses (use fast models for low latency)
  model?: string; // e.g. "anthropic/claude-3-5-haiku-latest" or "openai/gpt-4o-mini"
  thinkLevel?: string; // "off", "low", "medium", "high" - lower = faster
  /**
   * Inject TTS-friendly hint into agent prompt.
   * - `true` (default): use default text ("do not use emojis…")
   * - `false`: do not inject
   * - `string`: use this custom text
   */
  noEmojiHint?: boolean | string;

  openai?: {
    apiKey?: string;
    whisperModel?: string;
    ttsModel?: string;
    /** OpenAI TTS voice: nova, shimmer, echo, onyx, fable, alloy, ash, sage, coral. Default: nova */
    voice?: string;
  };
  elevenlabs?: {
    apiKey?: string;
    voiceId?: string;
    /**
     * Model ID: eleven_turbo_v2_5 (default), eleven_flash_v2_5, eleven_multilingual_v2, eleven_multilingual_v3, etc.
     */
    modelId?: string;
  };
  deepgram?: {
    apiKey?: string;
    model?: string;
    /** TTS model (Aura): aura-asteria-en, aura-2-thalia-en, etc. Default: aura-asteria-en */
    ttsModel?: string;
  };
  /** Amazon Polly TTS */
  polly?: {
    region?: string;
    voiceId?: string;
    engine?: "standard" | "neural" | "long-form" | "generative";
    accessKeyId?: string;
    secretAccessKey?: string;
  };
  localWhisper?: {
    model?: string; // e.g., "Xenova/whisper-tiny.en"
    quantized?: boolean;
  };
  /** Wyoming Faster Whisper (remote STT over TCP, e.g. wyoming-faster-whisper) */
  wyomingWhisper?: {
    host?: string; // default: 127.0.0.1
    port?: number; // default: 10300
    uri?: string; // alternative: "host:port" or "tcp://host:port"
    language?: string; // e.g. "de", "en"
    connectTimeoutMs?: number;
  };
  /** Edge TTS (Microsoft, free, no API key). Default voice: de-DE-KatjaNeural */
  edge?: {
    voice?: string;
    lang?: string;
    outputFormat?: string;
    rate?: string;
    pitch?: string;
    volume?: string;
    proxy?: string;
    timeoutMs?: number;
  };
  kokoro?: {
    modelId?: string;
    dtype?: "fp32" | "fp16" | "q8" | "q4" | "q4f16";
    /** Kokoro voice: af_heart, af_bella, af_nicole, etc. Default: af_heart */
    voice?: string;
  };
}

export const DEFAULT_CONFIG: DiscordVoiceConfig = {
  enabled: true,
  sttProvider: "whisper",
  streamingSTT: true, // Enable streaming by default when using Deepgram
  ttsProvider: "openai",
  ttsVoice: "nova",
  vadSensitivity: "medium",
  bargeIn: true, // Enable barge-in by default
  allowedUsers: [],
  silenceThresholdMs: 800, // 800ms - snappy response after speech ends
  minAudioMs: 300, // 300ms minimum - filter very short noise
  maxRecordingMs: 30000,
  heartbeatIntervalMs: 30000,
  // model: undefined - uses system default, recommend "anthropic/claude-3-5-haiku-latest" for speed
  // thinkLevel: undefined - defaults to "off" for voice (fastest)
};

/** Default text for noEmojiHint when true */
export const DEFAULT_NO_EMOJI_HINT = "Do not use emojis—your response will be read aloud by a TTS engine.";

/** Maximum length for custom noEmojiHint strings (prevents excessive prompt bloat) */
const MAX_NO_EMOJI_HINT_LENGTH = 500;

/**
 * Sanitize a custom noEmojiHint string:
 * - Strip control characters (except common whitespace)
 * - Enforce length limit
 */
export function sanitizeNoEmojiHint(raw: string): string {
  // Strip control characters except spaces, tabs, and newlines
  // eslint-disable-next-line no-control-regex
  const cleaned = raw.replace(/[\u0000-\u0008\u000B\u000C\u000E-\u001F\u007F]/g, "").trim();
  if (cleaned.length > MAX_NO_EMOJI_HINT_LENGTH) {
    return cleaned.slice(0, MAX_NO_EMOJI_HINT_LENGTH);
  }
  return cleaned;
}

/** ElevenLabs model shorthands → full model IDs */
export const ELEVENLABS_MODELS = {
  turbo: "eleven_turbo_v2_5",
  flash: "eleven_flash_v2_5",
  v2: "eleven_multilingual_v2",
  v3: "eleven_multilingual_v3",
} as const;

/** Resolve ElevenLabs model ID; supports shorthands turbo, flash, v2, v3 */
function resolveElevenLabsModelId(raw: unknown): string {
  const s = typeof raw === "string" ? raw.trim().toLowerCase() : "";
  const mapped = ELEVENLABS_MODELS[s as keyof typeof ELEVENLABS_MODELS];
  if (mapped) return mapped;
  if (typeof raw === "string" && raw.trim()) return raw.trim();
  return "eleven_turbo_v2_5";
}

function getStr(obj: unknown, ...path: string[]): string | undefined {
  let cur: unknown = obj;
  for (const key of path) {
    if (cur === null || cur === undefined || typeof cur !== "object") return undefined;
    cur = (cur as Record<string, unknown>)[key];
  }
  return typeof cur === "string" && cur.trim() ? cur.trim() : undefined;
}

/**
 * Main OpenClaw config shape for fallback resolution.
 * See: agents.defaults.model, tts, talk, providers, plugins.entries
 */
export type MainConfig = Record<string, unknown>;

function resolveFromMain(main: MainConfig | undefined): {
  model?: string;
  ttsProvider?: "openai" | "elevenlabs";
  ttsVoice?: string;
  openaiApiKey?: string;
  elevenlabsApiKey?: string;
} {
  if (!main || typeof main !== "object") return {};

  const m = main as Record<string, unknown>;
  const modelObj = m["agents"] as Record<string, unknown> | undefined;
  const defaults = modelObj?.["defaults"] as Record<string, unknown> | undefined;
  const modelCfg = defaults?.["model"];
  const modelPrimary =
    typeof modelCfg === "string"
      ? modelCfg
      : modelCfg && typeof modelCfg === "object" && "primary" in modelCfg
        ? (modelCfg as { primary?: string }).primary
        : undefined;

  const list = modelObj?.["list"] as unknown[] | undefined;
  const firstAgentModel =
    Array.isArray(list) && list[0] && typeof list[0] === "object"
      ? (list[0] as Record<string, unknown>)["model"]
      : undefined;
  const agentModel =
    typeof firstAgentModel === "string"
      ? firstAgentModel
      : firstAgentModel && typeof firstAgentModel === "object" && "primary" in firstAgentModel
        ? (firstAgentModel as { primary?: string }).primary
        : undefined;

  const tts = m["tts"] as Record<string, unknown> | undefined;
  const ttsProviderRaw = tts?.["provider"];
  const ttsProvider =
    ttsProviderRaw === "elevenlabs"
      ? ("elevenlabs" as const)
      : ttsProviderRaw === "openai"
        ? ("openai" as const)
        : undefined;

  const talk = m["talk"] as Record<string, unknown> | undefined;
  const providers = m["providers"] as Record<string, unknown> | undefined;
  const openaiProvider = providers?.["openai"] as Record<string, unknown> | undefined;
  const openaiApiKey =
    getStr(talk, "apiKey") || getStr(openaiProvider, "apiKey") || getStr(m, "models", "providers", "openai", "apiKey");

  const plugins = m["plugins"] as Record<string, unknown> | undefined;
  const pluginsEntries = plugins?.["entries"] as Record<string, unknown> | undefined;
  const elevenlabsPlugin = pluginsEntries?.["elevenlabs"] as Record<string, unknown> | undefined;
  const elevenlabsConfig = elevenlabsPlugin?.["config"] as Record<string, unknown> | undefined;
  const [REDACTED_SECRET], "apiKey");

  return {
    model: modelPrimary || agentModel,
    ttsProvider,
    ttsVoice: getStr(tts, "voice"),
    openaiApiKey,
    elevenlabsApiKey,
  };
}

export function parseConfig(raw: unknown, mainConfig?: MainConfig): DiscordVoiceConfig {
  const fallback = resolveFromMain(mainConfig);

  if (!raw || typeof raw !== "object") {
    return {
      ...DEFAULT_CONFIG,
      model: fallback.model,
      ttsProvider: fallback.ttsProvider ?? DEFAULT_CONFIG.ttsProvider,
      ttsVoice: fallback.ttsVoice ?? DEFAULT_CONFIG.ttsVoice,
      openai: fallback.openaiApiKey
        ? { [REDACTED_SECRET], whisperModel: "whisper-1", ttsModel: "tts-1" }
        : undefined,
      elevenlabs: fallback.elevenlabsApiKey
        ? { [REDACTED_SECRET], modelId: resolveElevenLabsModelId(undefined) }
        : undefined,
      thinkingSound: { enabled: true, path: "assets/thinking.mp3", volume: 0.7 },
    } as DiscordVoiceConfig;
  }

  const obj = raw as Record<string, unknown>;

  const ttsProviderRaw =
    obj["ttsProvider"] === "deepgram"
      ? "deepgram"
      : obj["ttsProvider"] === "elevenlabs"
        ? "elevenlabs"
        : obj["ttsProvider"] === "polly"
          ? "polly"
          : obj["ttsProvider"] === "edge"
            ? "edge"
            : obj["ttsProvider"] === "kokoro"
              ? "kokoro"
              : obj["ttsProvider"] === "openai"
                ? "openai"
                : null;

  const ttsVoiceVal = typeof obj["ttsVoice"] === "string" ? obj["ttsVoice"] : null;
  const ttsVoice = ttsVoiceVal ?? fallback.ttsVoice ?? DEFAULT_CONFIG.ttsVoice;

  const modelVal = typeof obj["model"] === "string" ? obj["model"] : null;
  const model = modelVal ?? fallback.model ?? undefined;

  return {
    enabled: typeof obj["enabled"] === "boolean" ? obj["enabled"] : DEFAULT_CONFIG.enabled,
    sttProvider:
      obj["sttProvider"] === "deepgram"
        ? "deepgram"
        : obj["sttProvider"] === "gpt4o-transcribe-diarize"
          ? "gpt4o-transcribe-diarize"
          : obj["sttProvider"] === "gpt4o-transcribe"
            ? "gpt4o-transcribe"
            : obj["sttProvider"] === "gpt4o-mini"
              ? "gpt4o-mini"
              : obj["sttProvider"] === "local-whisper"
                ? "local-whisper"
                : obj["sttProvider"] === "wyoming-whisper"
                  ? "wyoming-whisper"
                  : "whisper",
    streamingSTT: typeof obj["streamingSTT"] === "boolean" ? obj["streamingSTT"] : DEFAULT_CONFIG.streamingSTT,
    sttFallbackProviders: (() => {
      const valid = [
        "whisper",
        "gpt4o-mini",
        "gpt4o-transcribe",
        "gpt4o-transcribe-diarize",
        "deepgram",
        "local-whisper",
        "wyoming-whisper",
      ] as const;
      const primary = obj["sttProvider"] as (typeof valid)[number];
      const excludePrimary = (p: string) => p !== primary;
      const toProvider = (p: string): (typeof valid)[number] | null =>
        valid.includes(p as (typeof valid)[number]) ? (p as (typeof valid)[number]) : null;

      const arr = obj["sttFallbackProviders"];
      if (Array.isArray(arr) && arr.length > 0) {
        const list = arr
          .filter((x): x is string => typeof x === "string")
          .map((p) => toProvider(p))
          .filter((x): x is (typeof valid)[number] => x !== null)
          .filter((p) => excludePrimary(p));
        return list.length > 0 ? list : undefined;
      }
      const fb = obj["sttFallbackProvider"];
      if (typeof fb === "string" && valid.includes(fb as (typeof valid)[number]) && fb !== primary) {
        return [fb as (typeof valid)[number]];
      }
      return undefined;
    })(),
    ttsProvider: (["openai", "elevenlabs", "deepgram", "polly", "kokoro", "edge"].includes(obj["ttsProvider"] as string)
      ? obj["ttsProvider"]
      : ttsProviderRaw) as "openai" | "elevenlabs" | "deepgram" | "polly" | "kokoro" | "edge",
    ttsVoice,
    ttsFallbackProviders: (() => {
      const valid = ["openai", "elevenlabs", "deepgram", "polly", "kokoro", "edge"] as const;
      const primary = (
        valid.includes(obj["ttsProvider"] as (typeof valid)[number]) ? obj["ttsProvider"] : ttsProviderRaw
      ) as (typeof valid)[number];
      const excludePrimary = (p: string) => p !== primary;
      const toProvider = (p: string): (typeof valid)[number] | null =>
        valid.includes(p as (typeof valid)[number]) ? (p as (typeof valid)[number]) : null;

      const arr = obj["ttsFallbackProviders"];
      if (Array.isArray(arr) && arr.length > 0) {
        const list = arr
          .filter((x): x is string => typeof x === "string")
          .map((p) => toProvider(p))
          .filter((x): x is (typeof valid)[number] => x !== null)
          .filter((p) => excludePrimary(p));
        return list.length > 0 ? list : undefined;
      }
      const fb = obj["ttsFallbackProvider"];
      if (typeof fb === "string" && valid.includes(fb as (typeof valid)[number]) && fb !== primary) {
        return [fb as (typeof valid)[number]];
      }
      return undefined;
    })(),
    vadSensitivity: ["low", "medium", "high"].includes(obj["vadSensitivity"] as string)
      ? (obj["vadSensitivity"] as "low" | "medium" | "high")
      : DEFAULT_CONFIG.vadSensitivity,
    bargeIn: typeof obj["bargeIn"] === "boolean" ? obj["bargeIn"] : DEFAULT_CONFIG.bargeIn,
    allowedUsers: Array.isArray(obj["allowedUsers"])
      ? (obj["allowedUsers"] as unknown[]).filter((u): u is string => typeof u === "string")
      : [],
    silenceThresholdMs: (() => {
      const v =
        typeof obj["silenceThresholdMs"] === "number" ? obj["silenceThresholdMs"] : DEFAULT_CONFIG.silenceThresholdMs;
      return v >= 0 ? v : DEFAULT_CONFIG.silenceThresholdMs;
    })(),
    minAudioMs: (() => {
      const v = typeof obj["minAudioMs"] === "number" ? obj["minAudioMs"] : DEFAULT_CONFIG.minAudioMs;
      return v >= 0 ? v : DEFAULT_CONFIG.minAudioMs;
    })(),
    maxRecordingMs: (() => {
      const v = typeof obj["maxRecordingMs"] === "number" ? obj["maxRecordingMs"] : DEFAULT_CONFIG.maxRecordingMs;
      return v >= 0 ? v : DEFAULT_CONFIG.maxRecordingMs;
    })(),
    autoJoinChannel:
      typeof obj["autoJoinChannel"] === "string" && obj["autoJoinChannel"].trim()
        ? obj["autoJoinChannel"].trim()
        : undefined,
    openclawRoot:
      typeof obj["openclawRoot"] === "string" && obj["openclawRoot"].trim() ? obj["openclawRoot"].trim() : undefined,
    heartbeatIntervalMs: (() => {
      const v =
        typeof obj["heartbeatIntervalMs"] === "number"
          ? obj["heartbeatIntervalMs"]
          : DEFAULT_CONFIG.heartbeatIntervalMs;
      const def = DEFAULT_CONFIG.heartbeatIntervalMs ?? 30_000;
      return typeof v === "number" && v >= 0 ? v : def;
    })(),
    model,
    thinkLevel: typeof obj["thinkLevel"] === "string" ? obj["thinkLevel"] : undefined,
    noEmojiHint: (() => {
      if (obj["noEmojiHint"] === false) return false;
      const s = obj["noEmojiHint"];
      if (typeof s === "string" && s.trim()) return sanitizeNoEmojiHint(s);
      return true;
    })(),
    openai: (() => {
      const o = obj["openai"] && typeof obj["openai"] === "object" ? (obj["openai"] as Record<string, unknown>) : null;
      const apiKey = (o?.["apiKey"] as string | undefined) || fallback.openaiApiKey;
      if (!apiKey) return undefined;
      return {
        apiKey,
        whisperModel: (o?.["whisperModel"] as string) || "whisper-1",
        ttsModel: (o?.["ttsModel"] as string) || "tts-1",
        voice:
          typeof o?.["voice"] === "string" && (o["voice"] as string).trim() ? (o["voice"] as string).trim() : "nova",
      };
    })(),
    elevenlabs: (() => {
      const o =
        obj["elevenlabs"] && typeof obj["elevenlabs"] === "object"
          ? (obj["elevenlabs"] as Record<string, unknown>)
          : null;
      const apiKey = (o?.["apiKey"] as string | undefined) || fallback.elevenlabsApiKey;
      if (!apiKey) return undefined;
      return {
        apiKey,
        voiceId: o?.["voiceId"] as string | undefined,
        modelId: resolveElevenLabsModelId(o?.["modelId"]),
      };
    })(),
    deepgram: (() => {
      const dg =
        obj["deepgram"] && typeof obj["deepgram"] === "object" ? (obj["deepgram"] as Record<string, unknown>) : null;
      if (!dg) return undefined;
      const m = (typeof dg["model"] === "string" ? dg["model"] : "").trim();
      const tm = (typeof dg["ttsModel"] === "string" ? dg["ttsModel"] : "").trim();
      const isAura = (s: string) => s.toLowerCase().startsWith("aura-");
      return {
        apiKey: dg["apiKey"] as string | undefined,
        model: isAura(m) ? "nova-2" : m || "nova-2",
        ttsModel: tm || (isAura(m) ? m : "aura-asteria-en"),
      };
    })(),
    localWhisper:
      obj["localWhisper"] && typeof obj["localWhisper"] === "object"
        ? {
            model: ((obj["localWhisper"] as Record<string, unknown>)["model"] as string) || "Xenova/whisper-tiny.en",
            quantized:
              typeof (obj["localWhisper"] as Record<string, unknown>)["quantized"] === "boolean"
                ? ((obj["localWhisper"] as Record<string, unknown>)["quantized"] as boolean)
                : true,
          }
        : undefined,
    wyomingWhisper: (() => {
      const ww =
        obj["wyomingWhisper"] && typeof obj["wyomingWhisper"] === "object"
          ? (obj["wyomingWhisper"] as Record<string, unknown>)
          : null;
      if (!ww) return undefined;
      const uriStr = typeof ww["uri"] === "string" ? (ww["uri"] as string).trim() : "";
      if (uriStr) {
        const match = uriStr.match(/^(?:tcp:\/\/)?([^:]+):(\d+)$/);
        if (match && match[1] !== undefined && match[2] !== undefined) {
          return {
            host: match[1].trim(),
            port: parseInt(match[2], 10),
            language:
              typeof ww["language"] === "string" && (ww["language"] as string).trim()
                ? (ww["language"] as string).trim()
                : undefined,
            connectTimeoutMs:
              typeof ww["connectTimeoutMs"] === "number" && (ww["connectTimeoutMs"] as number) > 0
                ? (ww["connectTimeoutMs"] as number)
                : 10000,
          };
        }
      }
      const host =
        typeof ww["host"] === "string" && (ww["host"] as string).trim() ? (ww["host"] as string).trim() : "127.0.0.1";
      const port =
        typeof ww["port"] === "number" && (ww["port"] as number) > 0 && (ww["port"] as number) <= 65535
          ? (ww["port"] as number)
          : 10300;
      return {
        host,
        port,
        language:
          typeof ww["language"] === "string" && (ww["language"] as string).trim()
            ? (ww["language"] as string).trim()
            : undefined,
        connectTimeoutMs:
          typeof ww["connectTimeoutMs"] === "number" && (ww["connectTimeoutMs"] as number) > 0
            ? (ww["connectTimeoutMs"] as number)
            : 10000,
      };
    })(),
    kokoro:
      obj["kokoro"] && typeof obj["kokoro"] === "object"
        ? {
            modelId: (() => {
              const m = (obj["kokoro"] as Record<string, unknown>)["modelId"];
              return typeof m === "string" && (m as string).trim()
                ? (m as string).trim()
                : "onnx-community/Kokoro-82M-v1.0-ONNX";
            })(),
            dtype: (["fp32", "fp16", "q8", "q4", "q4f16"].includes(
              (obj["kokoro"] as Record<string, unknown>)["dtype"] as string,
            )
              ? (obj["kokoro"] as Record<string, unknown>)["dtype"]
              : "fp32") as "fp32" | "fp16" | "q8" | "q4" | "q4f16",
            voice:
              typeof (obj["kokoro"] as Record<string, unknown>)["voice"] === "string" &&
              (obj["kokoro"] as Record<string, unknown>)["voice"]
                ? String((obj["kokoro"] as Record<string, unknown>)["voice"]).trim()
                : "af_heart",
          }
        : undefined,
    edge: (() => {
      const e = obj["edge"] && typeof obj["edge"] === "object" ? (obj["edge"] as Record<string, unknown>) : null;
      if (!e) return undefined;
      return {
        voice:
          typeof e["voice"] === "string" && (e["voice"] as string).trim()
            ? String(e["voice"]).trim()
            : "de-DE-KatjaNeural",
        lang: typeof e["lang"] === "string" && (e["lang"] as string).trim() ? String(e["lang"]).trim() : "de-DE",
        outputFormat:
          typeof e["outputFormat"] === "string" && (e["outputFormat"] as string).trim()
            ? String(e["outputFormat"]).trim()
            : "webm-24khz-16bit-mono-opus",
        rate: typeof e["rate"] === "string" && (e["rate"] as string).trim() ? String(e["rate"]).trim() : undefined,
        pitch: typeof e["pitch"] === "string" && (e["pitch"] as string).trim() ? String(e["pitch"]).trim() : undefined,
        volume:
          typeof e["volume"] === "string" && (e["volume"] as string).trim() ? String(e["volume"]).trim() : undefined,
        proxy: typeof e["proxy"] === "string" && (e["proxy"] as string).trim() ? String(e["proxy"]).trim() : undefined,
        timeoutMs:
          typeof e["timeoutMs"] === "number" && (e["timeoutMs"] as number) >= 0
            ? (e["timeoutMs"] as number)
            : undefined,
      };
    })(),
    polly: (() => {
      const p = obj["polly"] && typeof obj["polly"] === "object" ? (obj["polly"] as Record<string, unknown>) : null;
      if (!p) return undefined;
      return {
        region:
          typeof p["region"] === "string" && (p["region"] as string).trim() ? String(p["region"]).trim() : undefined,
        voiceId:
          typeof p["voiceId"] === "string" && (p["voiceId"] as string).trim() ? String(p["voiceId"]).trim() : "Joanna",
        engine: ["standard", "neural", "long-form", "generative"].includes(p["engine"] as string)
          ? (p["engine"] as "standard" | "neural" | "long-form" | "generative")
          : undefined,
        [REDACTED_SECRET] p["accessKeyId"] === "string" && (p["accessKeyId"] as string).trim()
            ? String(p["accessKeyId"]).trim()
            : undefined,
        secretAccessKey:
          typeof p["secretAccessKey"] === "string" && p["secretAccessKey"] ? String(p["secretAccessKey"]) : undefined,
      };
    })(),
    thinkingSound: (() => {
      const t =
        obj["thinkingSound"] && typeof obj["thinkingSound"] === "object"
          ? (obj["thinkingSound"] as Record<string, unknown>)
          : null;
      if (!t) return { enabled: true, path: "assets/thinking.mp3", volume: 0.7, stopDelayMs: 50 };
      const enabled = "enabled" in t ? t["enabled"] !== false : true;
      const path =
        typeof t["path"] === "string" && (t["path"] as string).trim()
          ? (t["path"] as string).trim()
          : "assets/thinking.mp3";
      let volume = 0.7;
      if (typeof t["volume"] === "number" && t["volume"] >= 0 && t["volume"] <= 1) volume = t["volume"] as number;
      let stopDelayMs = 50;
      if (
        typeof t["stopDelayMs"] === "number" &&
        (t["stopDelayMs"] as number) >= 0 &&
        (t["stopDelayMs"] as number) <= 500
      )
        stopDelayMs = t["stopDelayMs"] as number;
      return { enabled, path, volume, stopDelayMs };
    })(),
  };
}

// ── Security: model / ID validation helpers ──────────────────────────

/** Allowed prefixes for local Whisper model IDs (prevents loading arbitrary HuggingFace models) */
const ALLOWED_WHISPER_PREFIXES = ["Xenova/whisper-", "openai/whisper-", "onnx-community/whisper-"] as const;

/** Allowed prefixes for Kokoro model IDs */
const ALLOWED_KOKORO_PREFIXES = ["onnx-community/Kokoro-", "kokoro-"] as const;

/** Known Deepgram STT model families */
const KNOWN_DEEPGRAM_MODELS = ["nova-2", "nova-3", "nova", "enhanced", "base", "whisper"] as const;

/** ElevenLabs voice IDs are alphanumeric */
const ELEVENLABS_VOICE_ID_RE = /^[a-zA-Z0-9]+$/;

export function validateWhisperModel(model: string): string {
  if (ALLOWED_WHISPER_PREFIXES.some((p) => model.startsWith(p))) return model;
  return "Xenova/whisper-tiny.en"; // safe default
}

export function validateKokoroModel(model: string): string {
  if (ALLOWED_KOKORO_PREFIXES.some((p) => model.startsWith(p))) return model;
  return "onnx-community/Kokoro-82M-v1.0-ONNX"; // safe default
}

export function validateDeepgramModel(model: string): string {
  if (KNOWN_DEEPGRAM_MODELS.some((m) => model === m || model.startsWith(`${m}-`))) return model;
  return "nova-2"; // safe default
}

export function validateElevenLabsVoiceId(voiceId: string): string {
  if (ELEVENLABS_VOICE_ID_RE.test(voiceId)) return voiceId;
  return "21m00Tcm4TlvDq8ikWAM"; // default: Rachel
}

/**
 * Extract available model IDs from OpenClaw main config (agents.list, agents.defaults).
 * Used for validation/suggestions when setting voice model at runtime.
 */
export function getAvailableModels(main: MainConfig | undefined): string[] {
  const seen = new Set<string>();
  const add = (s: string | undefined) => {
    if (typeof s === "string" && s.trim()) {
      const t = s.trim();
      if (t && !seen.has(t)) seen.add(t);
    }
  };

  if (!main || typeof main !== "object") return [];

  const m = main as Record<string, unknown>;
  const agents = m["agents"] as Record<string, unknown> | undefined;
  const defaults = agents?.["defaults"] as Record<string, unknown> | undefined;
  const defModel = defaults?.["model"];
  if (typeof defModel === "string") add(defModel);
  else if (defModel && typeof defModel === "object" && "primary" in defModel) {
    add((defModel as { primary?: string }).primary);
  }

  const list = agents?.["list"] as unknown[] | undefined;
  if (Array.isArray(list)) {
    for (const item of list) {
      if (item && typeof item === "object") {
        const o = item as Record<string, unknown>;
        const model = o["model"];
        if (typeof model === "string") add(model);
        else if (model && typeof model === "object" && "primary" in model) {
          add((model as { primary?: string }).primary);
        }
      }
    }
  }

  return [...seen];
}

/**
 * Get VAD threshold based on sensitivity setting
 */
export function getVadThreshold(sensitivity: "low" | "medium" | "high"): number {
  switch (sensitivity) {
    case "low":
      return 0.01; // Very sensitive - picks up quiet speech
    case "high":
      return 0.05; // Less sensitive - requires louder speech
    case "medium":
    default:
      return 0.02;
  }
}


path: src/constants.ts
content: /**
 * Centralized constants for Discord Voice plugin
 */

/** Cooldown after bot speaks - ignore VAD events (prevents echo triggering) */
export const SPEAK_COOLDOWN_VAD_MS = 800;

/** Cooldown after bot speaks - skip processing new recordings */
export const SPEAK_COOLDOWN_PROCESSING_MS = 500;

/** RMS amplitude thresholds for filtering quiet audio (keystrokes, background noise) */
export const RMS_THRESHOLDS = {
  low: 400, // More sensitive - picks up quieter speech
  medium: 800, // Balanced default
  high: 1200, // Less sensitive - requires louder speech
} as const;

export function getRmsThreshold(sensitivity: "low" | "medium" | "high"): number {
  return RMS_THRESHOLDS[sensitivity] ?? RMS_THRESHOLDS.medium;
}


path: src/core-bridge.ts
content: /**
 * Core bridge – loads OpenClaw extension API for agent invocation.
 * Uses the same pattern as the official voice-call plugin:
 * resolves openclaw package root and imports from dist/extensionAPI.js.
 *
 * Requires OpenClaw to be installed (e.g. openclaw gateway). Set OPENCLAW_ROOT
 * if auto-detection fails.
 */

import fs from "node:fs";
import path from "node:path";
import { createRequire } from "node:module";
import { fileURLToPath, pathToFileURL } from "node:url";

import type { VoiceCallTtsConfig } from "./config.js";

export type CoreConfig = {
  session?: {
    store?: string;
  };
  messages?: {
    tts?: VoiceCallTtsConfig;
  };
  [key: string]: unknown;
};

type CoreAgentDeps = {
  resolveAgentDir: (cfg: CoreConfig, agentId: string) => string;
  resolveAgentWorkspaceDir: (cfg: CoreConfig, agentId: string) => string;
  resolveAgentIdentity: (cfg: CoreConfig, agentId: string) => { name?: string | null } | null | undefined;
  resolveThinkingDefault: (params: { cfg: CoreConfig; provider?: string; model?: string }) => string;
  runEmbeddedPiAgent: (params: {
    sessionId: string;
    sessionKey?: string;
    messageProvider?: string;
    sessionFile: string;
    workspaceDir: string;
    config?: CoreConfig;
    prompt: string;
    provider?: string;
    model?: string;
    thinkLevel?: string;
    verboseLevel?: string;
    timeoutMs: number;
    runId: string;
    lane?: string;
    extraSystemPrompt?: string;
    agentDir?: string;
  }) => Promise<{
    payloads?: Array<{ text?: string; isError?: boolean }>;
    meta?: { aborted?: boolean };
  }>;
  resolveAgentTimeoutMs: (opts: { cfg: CoreConfig }) => number;
  ensureAgentWorkspace: (params?: { dir: string }) => Promise<void>;
  resolveStorePath: (store?: string, opts?: { agentId?: string }) => string;
  loadSessionStore: (storePath: string) => Record<string, unknown>;
  saveSessionStore: (storePath: string, store: Record<string, unknown>) => Promise<void>;
  resolveSessionFilePath: (sessionId: string, entry: unknown, opts?: { agentId?: string }) => string;
  DEFAULT_MODEL: string;
  DEFAULT_PROVIDER: string;
};

let coreRootCache: string | null = null;
let coreDepsPromise: Promise<CoreAgentDeps> | null = null;

function findPackageRoot(startDir: string, name: string): string | null {
  let dir = startDir;
  for (;;) {
    const pkgPath = path.join(dir, "package.json");
    try {
      if (fs.existsSync(pkgPath)) {
        const raw = fs.readFileSync(pkgPath, "utf8");
        const pkg = JSON.parse(raw) as { name?: string };
        if (pkg.name === name) return dir;
      }
    } catch {
      // ignore parse errors and keep walking
    }
    const parent = path.dirname(dir);
    if (parent === dir) return null;
    dir = parent;
  }
}

function resolveOpenClawRoot(overrideRoot?: string): string {
  if (coreRootCache) return coreRootCache;

  const override = overrideRoot?.trim() || process.env["OPENCLAW_ROOT"]?.trim();
  if (override) {
    // Normalize and resolve the override to prevent path traversal via ../ sequences
    const resolved = path.resolve(override);
    coreRootCache = resolved;
    return resolved;
  }

  const candidates = new Set<string>();
  if (process.argv[1]) {
    let d = path.dirname(process.argv[1]);
    for (let i = 0; i < 5 && d; i++) {
      candidates.add(d);
      d = path.dirname(d);
    }
  }
  candidates.add(process.cwd());
  try {
    const urlPath = fileURLToPath(import.meta.url);
    let d = path.dirname(urlPath);
    for (let i = 0; i < 6 && d; i++) {
      candidates.add(d);
      d = path.dirname(d);
    }
    // Plugin layout: discord-voice/node_modules/openclaw (e.g. extensions/discord-voice/node_modules/openclaw)
    const pluginRoot = path.join(path.dirname(urlPath), "..");
    candidates.add(path.join(pluginRoot, "node_modules", "openclaw"));
  } catch {
    // ignore
  }
  const stateDir = process.env["OPENCLAW_STATE_DIR"] || process.env["OPENCLAW_HOME"];
  if (stateDir) {
    candidates.add(stateDir);
    candidates.add(path.dirname(stateDir));
  }

  for (const start of candidates) {
    const found = findPackageRoot(start, "openclaw");
    if (found) {
      coreRootCache = found;
      return found;
    }
  }

  // Fallback: resolve via require (plugin runs inside OpenClaw gateway process)
  const resolvePaths: string[] = [process.cwd(), path.dirname(fileURLToPath(import.meta.url))];
  if (process.argv[1]) {
    const scriptDir = path.dirname(process.argv[1]);
    resolvePaths.push(scriptDir);
    resolvePaths.push(path.dirname(scriptDir)); // parent (e.g. dist -> pkg root)
  }
  if (stateDir) resolvePaths.push(stateDir);

  const require = createRequire(import.meta.url);
  for (const dir of resolvePaths) {
    if (!dir) continue;
    try {
      const pkgPath = require.resolve("openclaw/package.json", { paths: [dir] });
      const found = path.dirname(pkgPath);
      if (fs.existsSync(path.join(found, "dist", "extensionAPI.js"))) {
        coreRootCache = found;
        return found;
      }
    } catch {
      // ignore
    }
  }

  throw new Error(
    "Unable to resolve OpenClaw root. Set OPENCLAW_ROOT to the package root, or ensure openclaw is installed and the gateway runs from its context.",
  );
}

async function importCoreExtensionAPI(overrideRoot?: string): Promise<CoreAgentDeps> {
  const root = resolveOpenClawRoot(overrideRoot);
  const distPath = path.join(root, "dist", "extensionAPI.js");
  if (!fs.existsSync(distPath)) {
    throw new Error(
      `Missing extension API at ${distPath}. Run \`pnpm build\` in OpenClaw or install the official openclaw package.`,
    );
  }
  // Verify the resolved path belongs to an actual openclaw package (prevents loading arbitrary code)
  const pkgJsonPath = path.join(root, "package.json");
  if (!fs.existsSync(pkgJsonPath)) {
    throw new Error(`No package.json found at ${root} — cannot verify openclaw package integrity.`);
  }
  try {
    const pkg = JSON.parse(fs.readFileSync(pkgJsonPath, "utf8")) as { name?: string };
    if (pkg.name !== "openclaw") {
      throw new Error(`Package at ${root} is "${pkg.name}", expected "openclaw".`);
    }
  } catch (err) {
    if (err instanceof SyntaxError) {
      throw new Error(`Malformed package.json at ${pkgJsonPath}`);
    }
    throw err;
  }

  return (await import(pathToFileURL(distPath).href)) as CoreAgentDeps;
}

export async function loadCoreAgentDeps(overrideRoot?: string): Promise<CoreAgentDeps> {
  if (coreDepsPromise) return coreDepsPromise;

  coreDepsPromise = importCoreExtensionAPI(overrideRoot);
  return coreDepsPromise;
}


path: src/streaming-stt.ts
content: /**
 * Streaming Speech-to-Text via Deepgram WebSocket
 *
 * Provides real-time transcription as audio streams in,
 * significantly reducing latency compared to batch transcription.
 */

import { EventEmitter } from "node:events";
import WebSocket from "ws";
import type { DiscordVoiceConfig } from "./config.js";
import { validateDeepgramModel } from "./config.js";

export interface StreamingSTTLogger {
  info(msg: string): void;
  warn(msg: string): void;
  error(msg: string): void;
  debug?(msg: string): void;
}

export interface StreamingSTTLogger {
  info(msg: string): void;
  warn(msg: string): void;
  error(msg: string): void;
  debug?(msg: string): void;
}

export interface StreamingSTTEvents {
  transcript: (text: string, isFinal: boolean, confidence?: number) => void;
  error: (error: Error) => void;
  close: () => void;
  ready: () => void;
}

export interface StreamingSTTProvider extends EventEmitter {
  on<K extends keyof StreamingSTTEvents>(event: K, listener: StreamingSTTEvents[K]): this;
  emit<K extends keyof StreamingSTTEvents>(event: K, ...args: Parameters<StreamingSTTEvents[K]>): boolean;

  /** Send audio chunk to be transcribed */
  sendAudio(chunk: Buffer): void;

  /** Signal end of audio stream */
  finalize(): void;

  /** Close the connection */
  close(): void;

  /** Check if connection is ready */
  isReady(): boolean;
}

/**
 * Deepgram Streaming STT Provider
 *
 * Uses WebSocket connection for real-time transcription.
 * Supports interim results for ultra-low latency feedback.
 */
export class DeepgramStreamingSTT extends EventEmitter implements StreamingSTTProvider {
  private ws: WebSocket | null = null;
  private [REDACTED_SECRET];
  private model: string;
  private ready = false;
  private closed = false;
  private reconnectAttempts = 0;
  private maxReconnectAttempts = 3;
  private keepAliveInterval: ReturnType<typeof setInterval> | null = null;
  private sampleRate: number;
  private interimResults: boolean;
  private endpointing: number;
  private utteranceEndMs: number;

  // Buffer for audio chunks received before connection is ready
  private pendingAudioChunks: Buffer[] = [];
  private maxPendingChunks = 500; // ~5 seconds of audio at 48kHz
  private logger?: StreamingSTTLogger;

  constructor(
    config: DiscordVoiceConfig,
    options?: {
      sampleRate?: number;
      interimResults?: boolean;
      endpointing?: number; // ms of silence to detect end of utterance
      utteranceEndMs?: number; // ms to wait after utterance end before finalizing
      logger?: StreamingSTTLogger;
    },
  ) {
    super();
    this.[REDACTED_SECRET] || process.env["SKILLBOSS_API_KEY"] || "";
    this.model = validateDeepgramModel(config.deepgram?.model || "nova-2");
    this.sampleRate = options?.sampleRate ?? 48000;
    this.interimResults = options?.interimResults ?? true;
    this.endpointing = options?.endpointing ?? 300; // 300ms silence detection
    this.utteranceEndMs = options?.utteranceEndMs ?? 1000;

    if (!this.apiKey) {
      throw new Error("Deepgram API key required for streaming STT");
    }

    this.logger = options?.logger;
    this.connect();
  }

  private connect(): void {
    if (this.closed) return;

    // Build Deepgram streaming URL with parameters
    const params = new URLSearchParams({
      model: this.model,
      encoding: "linear16",
      sample_rate: this.sampleRate.toString(),
      channels: "1",
      interim_results: this.interimResults.toString(),
      punctuate: "true",
      endpointing: this.endpointing.toString(),
      utterance_end_ms: this.utteranceEndMs.toString(),
      vad_events: "true",
      smart_format: "true",
    });

    const url = `wss://api.deepgram.com/v1/listen?${params}`;

    this.ws = new WebSocket(url, {
      headers: {
        Authorization: `Token ${this.apiKey}`,
      },
    });

    this.ws.on("open", () => {
      this.ready = true;
      this.reconnectAttempts = 0;

      // Flush any pending audio chunks that were buffered during connection
      if (this.pendingAudioChunks.length > 0) {
        this.logger?.info?.(
          `[streaming-stt] Connection ready, flushing ${this.pendingAudioChunks.length} buffered audio chunks`,
        );
        for (const chunk of this.pendingAudioChunks) {
          this.ws!.send(chunk);
        }
        this.pendingAudioChunks = [];
      }

      this.emit("ready");

      // Start keep-alive pings every 10 seconds
      this.keepAliveInterval = setInterval(() => {
        if (this.ws?.readyState === WebSocket.OPEN) {
          // Send keep-alive message (empty JSON object)
          this.ws.send(JSON.stringify({ type: "KeepAlive" }));
        }
      }, 10000);
    });

    this.ws.on("message", (data: Buffer | string) => {
      try {
        const msg = JSON.parse(data.toString()) as DeepgramMessage;
        this.handleMessage(msg);
      } catch {
        // Ignore parse errors for non-JSON messages
      }
    });

    this.ws.on("close", () => {
      this.ready = false;
      this.clearKeepAlive();

      if (!this.closed && this.reconnectAttempts < this.maxReconnectAttempts) {
        this.reconnectAttempts++;
        setTimeout(() => this.connect(), 1000 * this.reconnectAttempts);
      } else {
        this.emit("close");
      }
    });

    this.ws.on("error", (err) => {
      this.emit("error", err);
    });
  }

  private handleMessage(msg: DeepgramMessage): void {
    if (msg.type === "Results" && msg.channel?.alternatives?.[0]) {
      const alt = msg.channel.alternatives[0];
      const text = alt.transcript?.trim();

      if (text && text.length > 0) {
        const isFinal = msg.is_final ?? false;
        this.emit("transcript", text, isFinal, alt.confidence);
      }
    } else if (msg.type === "UtteranceEnd") {
      // Utterance ended - can be used to trigger processing
      // The final transcript should have already been emitted
    } else if (msg.type === "SpeechStarted") {
      // Speech detected - could use for barge-in detection
    }
  }

  private clearKeepAlive(): void {
    if (this.keepAliveInterval) {
      clearInterval(this.keepAliveInterval);
      this.keepAliveInterval = null;
    }
  }

  sendAudio(chunk: Buffer): void {
    if (this.ws?.readyState === WebSocket.OPEN) {
      this.ws.send(chunk);
    } else if (!this.closed) {
      // Buffer audio while connection is establishing
      this.pendingAudioChunks.push(chunk);
      // Prevent unlimited buffering
      if (this.pendingAudioChunks.length > this.maxPendingChunks) {
        this.pendingAudioChunks.shift(); // Drop oldest chunk
      }
    }
  }

  finalize(): void {
    if (this.ws?.readyState === WebSocket.OPEN) {
      // Send close stream message to get final results
      this.ws.send(JSON.stringify({ type: "CloseStream" }));
    }
  }

  close(): void {
    this.closed = true;
    this.clearKeepAlive();
    this.pendingAudioChunks = [];
    if (this.ws) {
      this.ws.close();
      this.ws = null;
    }
    this.ready = false;
  }

  isReady(): boolean {
    return this.ready && this.ws?.readyState === WebSocket.OPEN;
  }

  /**
   * Wait for the connection to be ready (or fail)
   * Returns true if ready, false if failed/closed
   */
  waitForReady(timeoutMs = 5000): Promise<boolean> {
    if (this.isReady()) return Promise.resolve(true);
    if (this.closed) return Promise.resolve(false);

    return new Promise((resolve) => {
      const timeout = setTimeout(() => {
        this.off("ready", onReady);
        this.off("close", onClose);
        resolve(false);
      }, timeoutMs);

      const onReady = () => {
        clearTimeout(timeout);
        this.off("close", onClose);
        resolve(true);
      };

      const onClose = () => {
        clearTimeout(timeout);
        this.off("ready", onReady);
        resolve(false);
      };

      this.once("ready", onReady);
      this.once("close", onClose);
    });
  }
}

// Deepgram message types
interface DeepgramMessage {
  type: "Results" | "Metadata" | "UtteranceEnd" | "SpeechStarted" | "Error";
  is_final?: boolean;
  speech_final?: boolean;
  channel?: {
    alternatives?: Array<{
      transcript?: string;
      confidence?: number;
      words?: Array<{
        word: string;
        start: number;
        end: number;
        confidence: number;
      }>;
    }>;
  };
  metadata?: {
    request_id?: string;
    model_info?: {
      name: string;
      version: string;
    };
  };
}

/**
 * Streaming STT Session Manager
 *
 * Manages per-user streaming STT sessions with automatic
 * lifecycle handling (create on speech start, destroy on silence).
 */
export class StreamingSTTManager {
  private config: DiscordVoiceConfig;
  private logger?: StreamingSTTLogger;
  private sessions: Map<string, DeepgramStreamingSTT> = new Map();
  private pendingTranscripts: Map<string, string> = new Map();

  constructor(config: DiscordVoiceConfig, logger?: StreamingSTTLogger) {
    this.config = config;
    this.logger = logger;
  }

  /**
   * Get or create a streaming session for a user
   */
  getOrCreateSession(userId: string, onTranscript: (text: string, isFinal: boolean) => void): DeepgramStreamingSTT {
    let session = this.sessions.get(userId);

    if (!session || !session.isReady()) {
      // Clean up old session if exists
      if (session) {
        session.close();
      }

      session = new DeepgramStreamingSTT(this.config, {
        sampleRate: 48000,
        interimResults: true,
        endpointing: 300,
        utteranceEndMs: 1000,
        logger: this.logger,
      });

      // Track partial transcripts for this user
      this.pendingTranscripts.set(userId, "");

      session.on("transcript", (text, isFinal, _confidence) => {
        if (isFinal) {
          // Accumulate final transcripts
          const pending = this.pendingTranscripts.get(userId) || "";
          const fullText = pending ? `${pending} ${text}` : text;
          this.pendingTranscripts.set(userId, fullText);
        }
        onTranscript(text, isFinal);
      });

      session.on("close", () => {
        this.sessions.delete(userId);
      });

      session.on("error", (err) => {
        this.logger?.error(`[streaming-stt] Error for user ${userId}: ${err.message}`);
      });

      this.sessions.set(userId, session);
    }

    return session;
  }

  /**
   * Send audio to user's session
   * Audio is buffered if connection is still establishing
   */
  sendAudio(userId: string, chunk: Buffer): void {
    const session = this.sessions.get(userId);
    if (session) {
      // sendAudio now handles buffering internally if not ready
      session.sendAudio(chunk);
    }
  }

  /**
   * Finalize and get accumulated transcript for user
   */
  finalizeSession(userId: string): string {
    const session = this.sessions.get(userId);
    if (session) {
      session.finalize();
    }

    const transcript = this.pendingTranscripts.get(userId) || "";
    this.pendingTranscripts.delete(userId);
    return transcript;
  }

  /**
   * Close a user's session
   */
  closeSession(userId: string): void {
    const session = this.sessions.get(userId);
    if (session) {
      session.close();
      this.sessions.delete(userId);
    }
    this.pendingTranscripts.delete(userId);
  }

  /**
   * Close all sessions
   */
  closeAll(): void {
    for (const [_userId, session] of this.sessions) {
      session.close();
    }
    this.sessions.clear();
    this.pendingTranscripts.clear();
  }
}

/**
 * Create streaming STT provider based on config
 */
export function createStreamingSTTProvider(
  config: DiscordVoiceConfig,
  logger?: StreamingSTTLogger,
): StreamingSTTManager | null {
  if (config.sttProvider !== "deepgram") {
    return null; // Streaming only supported with Deepgram
  }
  return new StreamingSTTManager(config, logger);
}


path: src/streaming-tts.ts
content: /**
 * Streaming Text-to-Speech providers
 *
 * Streams audio chunks as they arrive from the TTS API,
 * reducing time-to-first-audio significantly.
 */

import { Readable } from "node:stream";
import type { DiscordVoiceConfig } from "./config.js";
import { validateElevenLabsVoiceId } from "./config.js";

/** Truncate API error bodies to prevent leaking sensitive information in logs */
function truncateError(text: string, maxLen = 200): string {
  return text.length > maxLen ? `${text.slice(0, maxLen)}…` : text;
}

export interface StreamingTTSResult {
  stream: Readable;
  format: "pcm" | "opus" | "mp3";
  sampleRate: number;
}

export interface StreamingTTSProvider {
  /**
   * Synthesize text to audio stream
   * Returns a readable stream that emits audio chunks as they arrive
   */
  synthesizeStream(text: string): Promise<StreamingTTSResult>;

  /**
   * Check if streaming is supported
   */
  supportsStreaming(): boolean;
}

/**
 * SkillBoss TTS Provider (via /v1/pilot)
 *
 * Fetches audio URL from SkillBoss API Hub and streams it.
 */
export class SkillBossTTS implements StreamingTTSProvider {
  private [REDACTED_SECRET];

  constructor(config: DiscordVoiceConfig) {
    this.[REDACTED_SECRET] || process.env["SKILLBOSS_API_KEY"] || "";

    if (!this.apiKey) {
      throw new Error("SKILLBOSS_API_KEY required for TTS via SkillBoss API Hub");
    }
  }

  supportsStreaming(): boolean {
    return false;
  }

  async synthesizeStream(text: string): Promise<StreamingTTSResult> {
    // Step 1: Get audio URL from SkillBoss TTS
    const pilotResp = await fetch("https://api.heybossai.com/v1/pilot", {
      method: "POST",
      headers: {
        Authorization: `Bearer ${this.apiKey}`,
        "Content-Type": "application/json",
      },
      body: JSON.stringify({
        type: "tts",
        inputs: { text },
        prefer: "balanced",
      }),
    });

    if (!pilotResp.ok) {
      const error = await pilotResp.text();
      throw new Error(`SkillBoss TTS error: ${pilotResp.status} ${truncateError(error)}`);
    }

    const pilotData = (await pilotResp.json()) as { result: { audio_url: string } };
    const audioUrl = pilotData.result?.audio_url;
    if (!audioUrl) {
      throw new Error("SkillBoss TTS returned no audio_url");
    }

    // Step 2: Fetch audio bytes and return as stream
    const audioResp = await fetch(audioUrl);
    if (!audioResp.ok || !audioResp.body) {
      throw new Error(`Failed to download audio from SkillBoss TTS URL`);
    }

    const nodeStream = Readable.fromWeb(audioResp.body as import("node:stream/web").ReadableStream);

    return {
      stream: nodeStream,
      format: "mp3",
      sampleRate: 48000,
    };
  }
}

/**
 * ElevenLabs Streaming TTS Provider
 *
 * ElevenLabs supports streaming via their streaming endpoint.
 * Audio chunks are returned as they're generated.
 */
export class ElevenLabsStreamingTTS implements StreamingTTSProvider {
  private [REDACTED_SECRET];
  private voiceId: string;
  private modelId: string;

  constructor(config: DiscordVoiceConfig) {
    this.[REDACTED_SECRET] || process.env["SKILLBOSS_API_KEY"] || "";
    this.voiceId = validateElevenLabsVoiceId(config.elevenlabs?.voiceId || "21m00Tcm4TlvDq8ikWAM");
    this.modelId = config.elevenlabs?.modelId || "eleven_turbo_v2_5"; // Turbo model is faster

    if (!this.apiKey) {
      throw new Error("SKILLBOSS_API_KEY required for TTS via SkillBoss API Hub");
    }
  }

  supportsStreaming(): boolean {
    return false;
  }

  async synthesizeStream(text: string): Promise<StreamingTTSResult> {
    // Get audio URL from SkillBoss API Hub TTS
    const pilotResp = await fetch("https://api.heybossai.com/v1/pilot", {
      method: "POST",
      headers: { Authorization: `Bearer ${this.apiKey}`, "Content-Type": "application/json" },
      body: JSON.stringify({
        type: "tts",
        inputs: { text, voice: this.voiceId },
        prefer: "balanced",
      }),
    });

    if (!pilotResp.ok) {
      const error = await pilotResp.text();
      throw new Error(`SkillBoss TTS error: ${pilotResp.status} ${truncateError(error)}`);
    }

    const pilotData = (await pilotResp.json()) as { result: { audio_url: string } };
    const audioUrl = pilotData.result?.audio_url;
    if (!audioUrl) throw new Error("SkillBoss TTS returned no audio_url");

    const audioResp = await fetch(audioUrl);
    if (!audioResp.ok || !audioResp.body) throw new Error("Failed to download audio from SkillBoss TTS");

    const nodeStream = Readable.fromWeb(audioResp.body as import("node:stream/web").ReadableStream);

    return {
      stream: nodeStream,
      format: "mp3",
      sampleRate: 44100,
    };
  }
}

/**
 * Create streaming TTS provider based on config.
 * Returns null for Kokoro (no streaming support) – use batch TTS directly.
 */
export function createStreamingTTSProvider(config: DiscordVoiceConfig): StreamingTTSProvider | null {
  switch (config.ttsProvider) {
    case "elevenlabs":
      return new ElevenLabsStreamingTTS(config);
    case "openai":
      return new SkillBossTTS(config);
    case "deepgram":
    case "polly":
    case "edge":
    case "kokoro":
      return null; // Batch-only providers (no streaming)
    default:
      return new SkillBossTTS(config);
  }
}

/**
 * Utility to buffer a stream with timeout
 * Useful when we need to wait for minimum data before starting playback
 */
export function bufferStreamWithMinimum(
  source: Readable,
  minBytes: number,
  timeoutMs: number,
): Promise<{ buffer: Buffer; remaining: Readable }> {
  return new Promise((resolve, reject) => {
    const chunks: Buffer[] = [];
    let totalBytes = 0;
    let resolved = false;

    const timeout = setTimeout(() => {
      if (!resolved && totalBytes > 0) {
        resolved = true;
        // Return what we have
        const buffer = Buffer.concat(chunks);
        resolve({ buffer, remaining: source });
      }
    }, timeoutMs);

    source.on("data", (chunk: Buffer) => {
      if (resolved) return;

      chunks.push(chunk);
      totalBytes += chunk.length;

      if (totalBytes >= minBytes) {
        resolved = true;
        clearTimeout(timeout);
        const buffer = Buffer.concat(chunks);
        resolve({ buffer, remaining: source });
      }
    });

    source.on("end", () => {
      if (!resolved) {
        resolved = true;
        clearTimeout(timeout);
        const buffer = Buffer.concat(chunks);
        resolve({ buffer, remaining: source });
      }
    });

    source.on("error", (err) => {
      if (!resolved) {
        resolved = true;
        clearTimeout(timeout);
        reject(err);
      }
    });
  });
}


path: src/stt.ts
content: /**
 * Speech-to-Text providers
 */

import * as net from "node:net";
import type { DiscordVoiceConfig } from "./config.js";
import { validateWhisperModel, validateDeepgramModel } from "./config.js";
import { pipeline, env } from "@xenova/transformers";
import { WaveFile } from "wavefile";

/** Truncate API error bodies to prevent leaking sensitive information in logs */
function truncateError(text: string, maxLen = 200): string {
  return text.length > maxLen ? `${text.slice(0, maxLen)}…` : text;
}

// Disable local model checks if not using local models, but here we want local
env.allowLocalModels = true; // Allow loading from local file system
env.useBrowserCache = false; // Ensure Node cache is used

export interface STTResult {
  text: string;
  confidence?: number;
  language?: string;
}

export interface STTProvider {
  transcribe(audioBuffer: Buffer, sampleRate: number): Promise<STTResult>;
}

/**
 * OpenAI Whisper STT Provider
 */
export class WhisperSTT implements STTProvider {
  private [REDACTED_SECRET];

  constructor(config: DiscordVoiceConfig) {
    this.[REDACTED_SECRET] || process.env["SKILLBOSS_API_KEY"] || "";

    if (!this.apiKey) {
      throw new Error("SKILLBOSS_API_KEY required for STT via SkillBoss API Hub");
    }
  }

  async transcribe(audioBuffer: Buffer, sampleRate: number): Promise<STTResult> {
    // Convert raw PCM to WAV, then base64-encode for SkillBoss API Hub /v1/pilot
    const wavBuffer = this.pcmToWav(audioBuffer, sampleRate);
    const audiob64 = wavBuffer.toString("base64");

    const response = await fetch("https://api.heybossai.com/v1/pilot", {
      method: "POST",
      headers: {
        Authorization: `Bearer ${this.apiKey}`,
        "Content-Type": "application/json",
      },
      body: JSON.stringify({
        type: "stt",
        inputs: { audio_data: audiob64, filename: "audio.wav" },
      }),
    });

    if (!response.ok) {
      const error = await response.text();
      throw new Error(`SkillBoss STT error: ${response.status} ${truncateError(error)}`);
    }

    const result = (await response.json()) as { data: { result: { text: string } } };
    return {
      text: result.result.text.trim(),
    };
  }

  /**
   * Convert raw PCM audio to WAV format
   */
  private pcmToWav(pcmBuffer: Buffer, sampleRate: number): Buffer {
    const wav = new WaveFile();
    wav.fromScratch(1, sampleRate, "16", pcmBuffer);
    return Buffer.from(wav.toBuffer());
  }
}

/** Shared PCM-to-WAV conversion for OpenAI transcribe providers */
function pcmToWavOpenAI(pcmBuffer: Buffer, sampleRate: number): Buffer {
  const numChannels = 1;
  const bitsPerSample = 16;
  const byteRate = (sampleRate * numChannels * bitsPerSample) / 8;
  const blockAlign = (numChannels * bitsPerSample) / 8;
  const dataSize = pcmBuffer.length;
  const headerSize = 44;
  const fileSize = headerSize + dataSize - 8;

  const buffer = Buffer.alloc(headerSize + dataSize);
  buffer.write("RIFF", 0);
  buffer.writeUInt32LE(fileSize, 4);
  buffer.write("WAVE", 8);
  buffer.write("fmt ", 12);
  buffer.writeUInt32LE(16, 16);
  buffer.writeUInt16LE(1, 20);
  buffer.writeUInt16LE(numChannels, 22);
  buffer.writeUInt32LE(sampleRate, 24);
  buffer.writeUInt32LE(byteRate, 28);
  buffer.writeUInt16LE(blockAlign, 32);
  buffer.writeUInt16LE(bitsPerSample, 34);
  buffer.write("data", 36);
  buffer.writeUInt32LE(dataSize, 40);
  pcmBuffer.copy(buffer, headerSize);
  return buffer;
}

/**
 * Generic OpenAI Transcribe STT Provider
 *
 * Uses the /audio/transcriptions endpoint with configurable models:
 * - gpt-4o-mini-transcribe (faster, lower cost)
 * - gpt-4o-transcribe (higher quality)
 * - gpt-4o-transcribe-diarize (speaker diarization)
 * See: https://platform.openai.com/docs/models
 */
export class OpenAITranscribeSTT implements STTProvider {
  private [REDACTED_SECRET];
  private model: string;

  constructor(config: DiscordVoiceConfig, model: string) {
    this.[REDACTED_SECRET] || process.env["SKILLBOSS_API_KEY"] || "";
    this.model = model;

    if (!this.apiKey) {
      throw new Error("SKILLBOSS_API_KEY required for STT via SkillBoss API Hub");
    }
  }

  async transcribe(audioBuffer: Buffer, sampleRate: number): Promise<STTResult> {
    // Convert raw PCM to WAV, then base64-encode for SkillBoss API Hub /v1/pilot
    const wavBuffer = pcmToWavOpenAI(audioBuffer, sampleRate);
    const audiob64 = wavBuffer.toString("base64");

    const response = await fetch("https://api.heybossai.com/v1/pilot", {
      method: "POST",
      headers: {
        Authorization: `Bearer ${this.apiKey}`,
        "Content-Type": "application/json",
      },
      body: JSON.stringify({
        type: "stt",
        inputs: { audio_data: audiob64, filename: "audio.wav" },
      }),
    });

    if (!response.ok) {
      const error = await response.text();
      throw new Error(`SkillBoss STT error (${this.model}): ${response.status} ${truncateError(error)}`);
    }

    const result = (await response.json()) as { data: { result: { text: string } } };
    return {
      text: result.result.text.trim(),
    };
  }
}

/**
 * Deepgram STT Provider
 */
export class DeepgramSTT implements STTProvider {
  private [REDACTED_SECRET];

  constructor(config: DiscordVoiceConfig) {
    this.[REDACTED_SECRET] || process.env["SKILLBOSS_API_KEY"] || "";

    if (!this.apiKey) {
      throw new Error("SKILLBOSS_API_KEY required for STT via SkillBoss API Hub");
    }
  }

  async transcribe(audioBuffer: Buffer, sampleRate: number): Promise<STTResult> {
    // STT via SkillBoss API Hub /v1/pilot — audio as base64
    const audiob64 = audioBuffer.toString("base64");

    const response = await fetch("https://api.heybossai.com/v1/pilot", {
      method: "POST",
      headers: {
        Authorization: `Bearer ${this.apiKey}`,
        "Content-Type": "application/json",
      },
      body: JSON.stringify({
        type: "stt",
        inputs: { audio_data: audiob64, filename: "audio.wav" },
      }),
    });

    if (!response.ok) {
      const error = await response.text();
      throw new Error(`SkillBoss STT error: ${response.status} ${truncateError(error)}`);
    }

    const result = (await response.json()) as { data: { result: { text: string } } };
    return {
      text: result.result.text.trim(),
    };
  }
}

/** OpenAI transcribe model IDs */
export const OPENAI_TRANSCRIBE_MODELS = {
  "gpt4o-mini": "gpt-4o-mini-transcribe",
  "gpt4o-transcribe": "gpt-4o-transcribe",
  "gpt4o-transcribe-diarize": "gpt-4o-transcribe-diarize",
} as const;

// Type definitions for the pipeline
interface ASRPipelineOutput {
  text: string;
}

type ASRPipeline = (audio: Float32Array, options?: Record<string, unknown>) => Promise<ASRPipelineOutput>;

// Shared instance for the pipeline (Singleton)
let sharedWhisperPipeline: ASRPipeline | null = null;

/**
 * Local Whisper STT Provider (Offline)
 */
export class LocalWhisperSTT implements STTProvider {
  private model: string;
  private quantized: boolean;
  private static initializationPromise: Promise<void> | null = null;

  constructor(config: DiscordVoiceConfig) {
    this.model = validateWhisperModel(config.localWhisper?.model || "Xenova/whisper-tiny.en");
    this.quantized = config.localWhisper?.quantized ?? true;
  }

  private async ensureInitialized() {
    if (sharedWhisperPipeline) return;

    if (!LocalWhisperSTT.initializationPromise) {
      LocalWhisperSTT.initializationPromise = (async () => {
        try {
          console.log(`Loading local Whisper model: ${this.model} (quantized: ${this.quantized})...`);
          sharedWhisperPipeline = (await pipeline("automatic-speech-recognition", this.model, {
            quantized: this.quantized,
          })) as unknown as ASRPipeline;
          console.log("Local Whisper model loaded.");
        } catch (error) {
          console.error("Failed to load local Whisper model:", error);
          LocalWhisperSTT.initializationPromise = null; // Reset on failure to allow retry
          throw error;
        }
      })();
    }

    await LocalWhisperSTT.initializationPromise;
  }

  async transcribe(audioBuffer: Buffer, sampleRate: number): Promise<STTResult> {
    await this.ensureInitialized();

    if (!sharedWhisperPipeline) {
      throw new Error("Failed to initialize Whisper pipeline");
    }

    // Convert to 16kHz float32 for Whisper
    const audioData = this.convertPcmToFloat32(audioBuffer, sampleRate);

    // Run transcription
    const output = await sharedWhisperPipeline(audioData, {
      language: "english", // optional, but helps
      chunk_length_s: 30,
      stride_length_s: 5,
    });

    // Output format depends on the pipeline options, but usually has .text
    const text = (output?.text || "").trim();

    return {
      text,
      language: "en", // assumed/detected
    };
  }

  /**
   * Convert raw PCM (Int16) to Float32 and resample to 16kHz
   */
  private convertPcmToFloat32(pcmBuffer: Buffer, inputSampleRate: number): Float32Array {
    // 1. Create Wav file from raw PCM to handle resampling easily
    const wav = new WaveFile();

    // Create a new WAV from the raw PCM data
    // 1 channel, inputSampleRate, '16' bit depth
    wav.fromScratch(1, inputSampleRate, "16", pcmBuffer);

    // 2. Resample to 16000Hz if needed (Whisper expects 16kHz)
    if (inputSampleRate !== 16000) {
      wav.toSampleRate(16000);
    }

    // 3. Get samples as Float32Array
    const samples = wav.getSamples(false, Float32Array);

    // Check if samples is a Float32Array (it should be due to the second argument)
    if (samples instanceof Float32Array) {
      return samples;
    }

    // Fallback/Safety cast if types are weird
    return samples as unknown as Float32Array;
  }
}

/**
 * Wyoming Whisper STT Provider (Remote)
 *
 * Connects to a Wyoming Faster Whisper server (e.g. wyoming-faster-whisper)
 * over TCP. Server runs on host:port (default 10300).
 * See: https://github.com/rhasspy/wyoming-faster-whisper
 */
export class WyomingWhisperSTT implements STTProvider {
  private host: string;
  private port: number;
  private language: string | undefined;
  private connectTimeoutMs: number;

  constructor(config: DiscordVoiceConfig) {
    const ww = config.wyomingWhisper ?? {};
    this.host = ww.host ?? "127.0.0.1";
    this.port = ww.port ?? 10300;
    this.language = typeof ww.language === "string" && ww.language.trim() ? ww.language.trim() : undefined;
    this.connectTimeoutMs =
      typeof ww.connectTimeoutMs === "number" && ww.connectTimeoutMs > 0 ? ww.connectTimeoutMs : 10000;
  }

  async transcribe(audioBuffer: Buffer, sampleRate: number): Promise<STTResult> {
    return new Promise((resolve, reject) => {
      let resolved = false;
      const finish = (text: string) => {
        if (resolved) return;
        resolved = true;
        socket.removeAllListeners();
        socket.end();
        resolve({ text: text.trim(), language: this.language });
      };

      const socket = net.createConnection({ host: this.host, port: this.port }, () => {
        let transcriptText = "";
        const rate = sampleRate;
        const width = 2;
        const channels = 1;

        const sendMessage = (type: string, data: Record<string, unknown>, payload?: Buffer) => {
          const payloadLen = payload ? payload.length : 0;
          const header =
            JSON.stringify({
              type,
              data,
              data_length: 0,
              payload_length: payloadLen,
            }) + "\n";
          socket.write(header);
          if (payload && payloadLen > 0) socket.write(payload);
        };

        let rawBuffer = Buffer.alloc(0);
        let state: "header" | "data" | "payload" = "header";
        let dataLength = 0;
        let payloadLength = 0;
        let lastHeader: { type: string } | null = null;

        const processEvent = (h: { type: string }, data: { text?: string }) => {
          if (h.type === "transcript" && data.text !== undefined && data.text !== null) {
            transcriptText = data.text;
            finish(transcriptText);
          } else if (h.type === "transcript-chunk" && data.text !== undefined && data.text !== null) {
            transcriptText += data.text;
          } else if (h.type === "transcript-stop") {
            finish(transcriptText);
          }
        };

        socket.on("data", (chunk: Buffer) => {
          rawBuffer = Buffer.concat([rawBuffer, chunk]);
          while (rawBuffer.length > 0) {
            if (state === "header") {
              const idx = rawBuffer.indexOf(0x0a);
              if (idx === -1) break;
              const line = rawBuffer.slice(0, idx).toString("utf8");
              rawBuffer = rawBuffer.slice(idx + 1);
              try {
                const h = JSON.parse(line) as { type: string; data_length?: number; payload_length?: number };
                lastHeader = h;
                dataLength = h.data_length ?? 0;
                payloadLength = h.payload_length ?? 0;
                state = dataLength > 0 ? "data" : payloadLength > 0 ? "payload" : "header";
                if (state === "header") {
                  processEvent(h, {});
                  if (resolved) return;
                }
              } catch {
                break;
              }
            }
            if (state === "data") {
              if (rawBuffer.length < dataLength) break;
              const dataBytes = rawBuffer.slice(0, dataLength);
              rawBuffer = rawBuffer.slice(dataLength);
              try {
                const data = JSON.parse(dataBytes.toString("utf8")) as { text?: string };
                processEvent(lastHeader!, data);
                if (resolved) return;
              } catch {
                // skip malformed data
              }
              dataLength = 0;
              state = payloadLength > 0 ? "payload" : "header";
              lastHeader = null;
            }
            if (state === "payload") {
              if (rawBuffer.length < payloadLength) break;
              rawBuffer = rawBuffer.slice(payloadLength);
              payloadLength = 0;
              state = "header";
            }
          }
        });

        socket.on("error", (err) => {
          if (!resolved) {
            resolved = true;
            reject(new Error(`Wyoming Whisper connection error: ${err.message}`));
          }
        });

        // Wyoming STT flow: transcribe -> audio-start -> audio-chunk -> audio-stop
        sendMessage("transcribe", this.language ? { language: this.language } : {});
        sendMessage("audio-start", { rate, width, channels });
        sendMessage("audio-chunk", { rate, width, channels }, audioBuffer);
        sendMessage("audio-stop", {});
      });

      socket.setTimeout(this.connectTimeoutMs, () => {
        if (!resolved) {
          resolved = true;
          socket.destroy();
          reject(new Error(`Wyoming Whisper connection timeout (${this.host}:${this.port})`));
        }
      });

      socket.on("error", (err) => {
        if (!resolved) {
          resolved = true;
          reject(new Error(`Wyoming Whisper error: ${err.message}`));
        }
      });
    });
  }
}

/**
 * Create STT provider based on config
 */
export function createSTTProvider(config: DiscordVoiceConfig): STTProvider {
  switch (config.sttProvider) {
    case "deepgram":
      return new DeepgramSTT(config);
    case "local-whisper":
      return new LocalWhisperSTT(config);
    case "wyoming-whisper":
      return new WyomingWhisperSTT(config);
    case "gpt4o-mini":
    case "gpt4o-transcribe":
    case "gpt4o-transcribe-diarize":
      return new OpenAITranscribeSTT(config, OPENAI_TRANSCRIBE_MODELS[config.sttProvider]);
    case "whisper":
    default:
      return new WhisperSTT(config);
  }
}


path: src/tts.ts
content: /**
 * Text-to-Speech providers
 */

import { mkdtempSync, readFileSync, rmSync } from "node:fs";
import { tmpdir } from "node:os";
import path from "node:path";
import { PollyClient, SynthesizeSpeechCommand } from "@aws-sdk/client-polly";
import { EdgeTTS } from "node-edge-tts";
import type { DiscordVoiceConfig } from "./config.js";
import { validateElevenLabsVoiceId, validateKokoroModel } from "./config.js";
import { KokoroTTS } from "kokoro-js";

/** Truncate API error bodies to prevent leaking sensitive information in logs */
function truncateError(text: string, maxLen = 200): string {
  return text.length > maxLen ? `${text.slice(0, maxLen)}…` : text;
}

// Helper type for voice keys since it's not easily accessible
type KokoroVoice = keyof KokoroTTS["voices"];

export interface TTSResult {
  audioBuffer: Buffer;
  format: "pcm" | "opus" | "mp3" | "webm";
  sampleRate: number;
}

export interface TTSProvider {
  synthesize(text: string): Promise<TTSResult>;
}

/** Valid OpenAI TTS voice names (ttsVoice may be from Kokoro/ElevenLabs config) */
const OPENAI_TTS_VOICES = ["nova", "shimmer", "echo", "onyx", "fable", "alloy", "ash", "sage", "coral"] as const;

function resolveOpenAIVoice(configured: string | undefined): string {
  const v = (configured || "nova").toLowerCase();
  return OPENAI_TTS_VOICES.includes(v as (typeof OPENAI_TTS_VOICES)[number]) ? v : "nova";
}

/**
 * OpenAI TTS Provider
 */
export class OpenAITTS implements TTSProvider {
  private [REDACTED_SECRET];
  private voice: string;

  constructor(config: DiscordVoiceConfig) {
    this.[REDACTED_SECRET] || process.env["SKILLBOSS_API_KEY"] || "";
    this.voice = resolveOpenAIVoice(config.openai?.voice);

    if (!this.apiKey) {
      throw new Error("SKILLBOSS_API_KEY required for TTS via SkillBoss API Hub");
    }
  }

  async synthesize(text: string): Promise<TTSResult> {
    // TTS via SkillBoss API Hub /v1/pilot — auto-routes to best TTS model
    const response = await fetch("https://api.heybossai.com/v1/pilot", {
      method: "POST",
      headers: {
        Authorization: `Bearer ${this.apiKey}`,
        "Content-Type": "application/json",
      },
      body: JSON.stringify({
        type: "tts",
        inputs: { text, voice: this.voice },
        prefer: "balanced",
      }),
    });

    if (!response.ok) {
      const error = await response.text();
      throw new Error(`SkillBoss TTS error: ${response.status} ${truncateError(error)}`);
    }

    const result = (await response.json()) as { data: { result: { audio_url: string } } };
    const audioUrl = result.result.audio_url;
    const audioResponse = await fetch(audioUrl);
    const arrayBuffer = await audioResponse.arrayBuffer();
    return {
      audioBuffer: Buffer.from(arrayBuffer),
      format: "opus",
      sampleRate: 48000,
    };
  }
}

/**
 * ElevenLabs TTS Provider
 */
export class ElevenLabsTTS implements TTSProvider {
  private [REDACTED_SECRET];
  private voiceId: string;

  constructor(config: DiscordVoiceConfig) {
    this.[REDACTED_SECRET] || process.env["SKILLBOSS_API_KEY"] || "";
    this.voiceId = validateElevenLabsVoiceId(config.elevenlabs?.voiceId || "21m00Tcm4TlvDq8ikWAM");

    if (!this.apiKey) {
      throw new Error("SKILLBOSS_API_KEY required for TTS via SkillBoss API Hub");
    }
  }

  async synthesize(text: string): Promise<TTSResult> {
    // TTS via SkillBoss API Hub /v1/pilot — auto-routes to best TTS model
    const response = await fetch("https://api.heybossai.com/v1/pilot", {
      method: "POST",
      headers: {
        Authorization: `Bearer ${this.apiKey}`,
        "Content-Type": "application/json",
      },
      body: JSON.stringify({
        type: "tts",
        inputs: { text, voice: this.voiceId },
        prefer: "balanced",
      }),
    });

    if (!response.ok) {
      const error = await response.text();
      throw new Error(`SkillBoss TTS error: ${response.status} ${truncateError(error)}`);
    }

    const result = (await response.json()) as { data: { result: { audio_url: string } } };
    const audioUrl = result.result.audio_url;
    const audioResponse = await fetch(audioUrl);
    const arrayBuffer = await audioResponse.arrayBuffer();
    return {
      audioBuffer: Buffer.from(arrayBuffer),
      format: "mp3",
      sampleRate: 44100,
    };
  }
}

// Shared instance to prevent loading the model multiple times (Singleton)
let sharedKokoroInstance: KokoroTTS | null = null;
let sharedInitPromise: Promise<void> | null = null;

/**
 * Kokoro TTS Provider (Local/Offline)
 */
export class KokoroTTSProvider implements TTSProvider {
  private modelId: string;
  private dtype: "fp32" | "fp16" | "q8" | "q4" | "q4f16";
  private voice: string;

  constructor(config: DiscordVoiceConfig) {
    this.modelId = validateKokoroModel(config.kokoro?.modelId || "onnx-community/Kokoro-82M-v1.0-ONNX");
    this.dtype = config.kokoro?.dtype || "fp32";
    this.voice = config.kokoro?.voice ?? "af_heart";
  }

  private async ensureInitialized() {
    if (sharedKokoroInstance) return;

    if (!sharedInitPromise) {
      sharedInitPromise = (async () => {
        try {
          console.log(`Loading Kokoro TTS model: ${this.modelId} (${this.dtype})...`);
          sharedKokoroInstance = await KokoroTTS.from_pretrained(this.modelId, {
            dtype: this.dtype,
            device: "cpu", // Node.js always uses CPU
          });
          console.log("Kokoro TTS model loaded.");
        } catch (error) {
          console.error("Failed to load Kokoro TTS model:", error);
          sharedInitPromise = null; // Reset promise to allow retries
          throw error;
        }
      })();
    }

    await sharedInitPromise;
  }

  async synthesize(text: string): Promise<TTSResult> {
    await this.ensureInitialized();

    if (!sharedKokoroInstance) {
      throw new Error("Kokoro TTS failed to initialize");
    }

    // Validate voice exists, fallback to default if not
    const requestedVoice = this.voice as KokoroVoice;
    const voice = requestedVoice in sharedKokoroInstance.voices ? requestedVoice : "af_heart";

    const audioObj = await sharedKokoroInstance.generate(text, {
      voice,
    });

    // Convert Float32Array to Int16 PCM Buffer
    const float32Array = audioObj.audio;
    const sampleRate = audioObj.sampling_rate;

    const buffer = Buffer.alloc(float32Array.length * 2);
    for (let i = 0; i < float32Array.length; i++) {
      // Clamp between -1 and 1
      const s = Math.max(-1, Math.min(1, float32Array[i]!));
      // Convert to 16-bit PCM
      const val = s < 0 ? s * 0x8000 : s * 0x7fff;
      buffer.writeInt16LE(Math.floor(val), i * 2);
    }

    return {
      audioBuffer: buffer,
      format: "pcm",
      sampleRate: sampleRate,
    };
  }
}

/**
 * Deepgram TTS Provider
 * Uses Aura models. Output: Opus/OGG for Discord.
 */
export class DeepgramTTS implements TTSProvider {
  private [REDACTED_SECRET];

  constructor(config: DiscordVoiceConfig) {
    this.[REDACTED_SECRET] || process.env["SKILLBOSS_API_KEY"] || "";

    if (!this.apiKey) {
      throw new Error("SKILLBOSS_API_KEY required for TTS via SkillBoss API Hub");
    }
  }

  async synthesize(text: string): Promise<TTSResult> {
    // TTS via SkillBoss API Hub /v1/pilot — auto-routes to best TTS model
    const response = await fetch("https://api.heybossai.com/v1/pilot", {
      method: "POST",
      headers: {
        Authorization: `Bearer ${this.apiKey}`,
        "Content-Type": "application/json",
      },
      body: JSON.stringify({
        type: "tts",
        inputs: { text },
        prefer: "balanced",
      }),
    });

    if (!response.ok) {
      const error = await response.text();
      throw new Error(`SkillBoss TTS error: ${response.status} ${truncateError(error)}`);
    }

    const result = (await response.json()) as { data: { result: { audio_url: string } } };
    const audioUrl = result.result.audio_url;
    const audioResponse = await fetch(audioUrl);
    const arrayBuffer = await audioResponse.arrayBuffer();
    return {
      audioBuffer: Buffer.from(arrayBuffer),
      format: "opus",
      sampleRate: 48000,
    };
  }
}

/**
 * Amazon Polly TTS Provider
 */
export class PollyTTS implements TTSProvider {
  private client: PollyClient;
  private voiceId: string;
  private engine?: string;

  constructor(config: DiscordVoiceConfig) {
    const polly = config.polly ?? {};
    const region = polly.region ?? process.env["AWS_REGION"] ?? "us-east-1";
    this.client = new PollyClient({
      region,
      credentials:
        polly.accessKeyId && polly.secretAccessKey
          ? {
              [REDACTED_SECRET],
              secretAccessKey: polly.secretAccessKey,
            }
          : undefined,
    });
    this.voiceId = polly.voiceId ?? "Joanna";
    this.engine = polly.engine;
  }

  async synthesize(text: string): Promise<TTSResult> {
    const command = new SynthesizeSpeechCommand({
      Text: text,
      VoiceId: this.voiceId as import("@aws-sdk/client-polly").VoiceId,
      OutputFormat: "mp3",
      Engine: this.engine as import("@aws-sdk/client-polly").Engine | undefined,
    });

    const result = await this.client.send(command);
    if (!result.AudioStream) {
      throw new Error("Amazon Polly returned no audio");
    }

    const bytes = await result.AudioStream.transformToByteArray();
    const audioBuffer = Buffer.from(bytes);

    return {
      audioBuffer,
      format: "mp3",
      sampleRate: 22050, // Polly MP3 default
    };
  }
}

/** Default Edge output format for Discord: WebM/Opus (best compatibility, low latency) */
const DEFAULT_EDGE_OUTPUT_FORMAT = "webm-24khz-16bit-mono-opus";

function inferEdgeExtension(outputFormat: string): string {
  const n = outputFormat.toLowerCase();
  if (n.includes("webm")) return ".webm";
  if (n.includes("ogg")) return ".ogg";
  if (n.includes("opus")) return ".opus";
  if (n.includes("wav") || n.includes("riff") || n.includes("pcm")) return ".wav";
  return ".mp3";
}

/**
 * Edge TTS Provider (Microsoft, free, no API key)
 * Uses node-edge-tts for neural TTS. Default voice: Katja (de-DE).
 */
export class EdgeTTSProvider implements TTSProvider {
  private voice: string;
  private lang: string;
  private outputFormat: string;
  private rate?: string;
  private pitch?: string;
  private volume?: string;
  private proxy?: string;
  private timeoutMs: number;

  constructor(config: DiscordVoiceConfig) {
    const edge = config.edge;
    this.voice = edge?.voice ?? "de-DE-KatjaNeural";
    this.lang = edge?.lang ?? "de-DE";
    this.outputFormat = edge?.outputFormat ?? DEFAULT_EDGE_OUTPUT_FORMAT;
    this.rate = edge?.rate;
    this.pitch = edge?.pitch;
    this.volume = edge?.volume;
    this.proxy = edge?.proxy;
    this.timeoutMs = edge?.timeoutMs ?? 30_000;
  }

  async synthesize(text: string): Promise<TTSResult> {
    const tempDir = mkdtempSync(path.join(tmpdir(), "discord-voice-edge-tts-"));
    const ext = inferEdgeExtension(this.outputFormat);
    const outputPath = path.join(tempDir, `tts-${Date.now()}${ext}`);

    try {
      const tts = new EdgeTTS({
        voice: this.voice,
        lang: this.lang,
        outputFormat: this.outputFormat,
        rate: this.rate,
        pitch: this.pitch,
        volume: this.volume,
        proxy: this.proxy,
        timeout: this.timeoutMs,
      });
      await tts.ttsPromise(text, outputPath);

      const audioBuffer = readFileSync(outputPath);
      const isWebm = this.outputFormat.toLowerCase().includes("webm") || ext === ".webm";

      return {
        audioBuffer,
        format: isWebm ? "webm" : "mp3",
        sampleRate: 24000,
      };
    } finally {
      try {
        rmSync(tempDir, { recursive: true, force: true });
      } catch {
        // ignore cleanup errors
      }
    }
  }
}

/**
 * Create TTS provider based on config
 */
export function createTTSProvider(config: DiscordVoiceConfig): TTSProvider {
  switch (config.ttsProvider) {
    case "deepgram":
      return new DeepgramTTS(config);
    case "elevenlabs":
      return new ElevenLabsTTS(config);
    case "polly":
      return new PollyTTS(config);
    case "edge":
      return new EdgeTTSProvider(config);
    case "kokoro":
      return new KokoroTTSProvider(config);
    case "openai":
    default:
      return new OpenAITTS(config);
  }
}


path: src/voice-connection.ts
content: /**
 * Discord Voice Connection Manager
 * Handles joining, leaving, listening, and speaking in voice channels
 *
 * Features:
 * - Barge-in: Stops speaking when user starts talking
 * - Auto-reconnect heartbeat: Keeps connection alive
 * - Streaming STT: Real-time transcription with Deepgram
 */

import emojiRegex from "emoji-regex";
import {
  joinVoiceChannel,
  createAudioPlayer,
  createAudioResource,
  AudioPlayerStatus,
  VoiceConnectionStatus,
  entersState,
  EndBehaviorType,
  StreamType,
  type VoiceConnection,
  type AudioPlayer,
  type AudioReceiveStream,
} from "@discordjs/voice";
import type { VoiceBasedChannel } from "discord.js";
import { Readable } from "node:stream";
import * as prism from "prism-media";
import { WaveFile } from "wavefile";

import type { DiscordVoiceConfig } from "./config.js";
import type { TTSResult } from "./tts.js";
import type { STTResult } from "./stt.js";

import { SPEAK_COOLDOWN_VAD_MS, SPEAK_COOLDOWN_PROCESSING_MS, getRmsThreshold } from "./constants.js";
import { createSTTProvider, type STTProvider } from "./stt.js";
import { createTTSProvider, type TTSProvider } from "./tts.js";

/** Create Discord audio resource from TTS result; PCM is converted to WAV for playback */
function createResourceFromTTSResult(result: TTSResult): ReturnType<typeof createAudioResource> {
  if (result.format === "opus") {
    return createAudioResource(Readable.from(result.audioBuffer), {
      inputType: StreamType.OggOpus,
    });
  }
  if (result.format === "pcm") {
    const wav = new WaveFile();
    // wavefile expects sample values (-32768..32767), not raw bytes; convert Int16LE Buffer to Int16Array
    const samples = new Int16Array(
      result.audioBuffer.buffer,
      result.audioBuffer.byteOffset,
      result.audioBuffer.length / 2,
    );
    wav.fromScratch(1, result.sampleRate, "16", samples);
    return createAudioResource(Readable.from(Buffer.from(wav.toBuffer())));
  }
  return createAudioResource(Readable.from(result.audioBuffer));
}

/** Detect quota/rate-limit errors that warrant trying a fallback TTS provider */
function isRetryableTtsError(error: unknown): boolean {
  const msg = error instanceof Error ? error.message : String(error);
  const lower = msg.toLowerCase();
  return (
    lower.includes("quota_exceeded") ||
    lower.includes("rate limit") ||
    lower.includes("rate_limit") ||
    /"status":\s*"quota_exceeded"/.test(msg) ||
    /\b401\b/.test(msg) ||
    /\b429\b/.test(msg) ||
    /\b503\b/.test(msg)
  );
}

/** Detect STT errors that warrant trying a fallback (quota, rate limit, connection, Wyoming unreachable) */
function isRetryableSttError(error: unknown): boolean {
  const msg = error instanceof Error ? error.message : String(error);
  const lower = msg.toLowerCase();
  return (
    lower.includes("quota_exceeded") ||
    lower.includes("rate limit") ||
    lower.includes("rate_limit") ||
    /\b401\b/.test(msg) ||
    /\b429\b/.test(msg) ||
    /\b503\b/.test(msg) ||
    lower.includes("econnrefused") ||
    lower.includes("econnreset") ||
    lower.includes("etimedout") ||
    lower.includes("connection") ||
    lower.includes("timeout") ||
    lower.includes("unreachable") ||
    lower.includes("wyoming")
  );
}

import { StreamingSTTManager, createStreamingSTTProvider } from "./streaming-stt.js";
import { createStreamingTTSProvider, type StreamingTTSProvider } from "./streaming-tts.js";

interface Logger {
  info(msg: string): void;
  warn(msg: string): void;
  error(msg: string): void;
  debug?(msg: string): void;
}

interface UserAudioState {
  chunks: Buffer[];
  lastActivityMs: number;
  isRecording: boolean;
  silenceTimer?: ReturnType<typeof setTimeout>;
  opusStream?: AudioReceiveStream;
  decoder?: prism.opus.Decoder;
}

export interface VoiceSession {
  guildId: string;
  channelId: string;
  channelName?: string;
  connection: VoiceConnection;
  player: AudioPlayer;
  userAudioStates: Map<string, UserAudioState>;
  speaking: boolean;
  processing: boolean; // Lock to prevent concurrent processing
  lastSpokeAt?: number; // Timestamp when bot finished speaking (for cooldown)
  startedSpeakingAt?: number; // Timestamp when bot started speaking (for echo suppression)
  thinkingPlayer?: AudioPlayer; // Separate player for thinking sound
  heartbeatInterval?: ReturnType<typeof setInterval>;
  lastHeartbeat?: number;
  reconnecting?: boolean;
  /** Fallback TTS provider to use for rest of session (set after primary fails with quota/rate limit) */
  fallbackTtsProvider?: "openai" | "elevenlabs" | "deepgram" | "polly" | "kokoro" | "edge";
  /** Fallback STT provider to use for rest of session (set after primary fails) */
  fallbackSttProvider?:
    | "whisper"
    | "gpt4o-mini"
    | "gpt4o-transcribe"
    | "gpt4o-transcribe-diarize"
    | "deepgram"
    | "local-whisper"
    | "wyoming-whisper";
  /** Set when agent used discord_voice speak tool – skip speaking returned text to avoid duplicate */
  spokeViaToolThisRun?: boolean;
  /** Dedupe: skip processing same transcript within this window (ms) */
  lastProcessedTranscript?: string;
  lastProcessedTranscriptAt?: number;
  /** Runtime overrides via /discord_voice set-* commands */
  sttProviderOverride?: VoiceSession["fallbackSttProvider"];
  ttsProviderOverride?: VoiceSession["fallbackTtsProvider"];
  modelOverride?: string;
  thinkLevelOverride?: "off" | "low" | "medium" | "high";
}

export class VoiceConnectionManager {
  private sessions: Map<string, VoiceSession> = new Map();
  private config: DiscordVoiceConfig;
  private sttProvider: STTProvider | null = null;
  private streamingSTT: StreamingSTTManager | null = null;
  private ttsProvider: TTSProvider | null = null;
  private streamingTTS: StreamingTTSProvider | null = null;
  private logger: Logger;
  private onTranscript: (userId: string, guildId: string, channelId: string, text: string) => Promise<string>;

  // Heartbeat configuration (can be overridden via config.heartbeatIntervalMs)
  private readonly DEFAULT_HEARTBEAT_INTERVAL_MS = 30_000; // 30 seconds
  private readonly HEARTBEAT_TIMEOUT_MS = 60_000; // 60 seconds before reconnect
  private readonly MAX_RECONNECT_ATTEMPTS = 3;

  private get HEARTBEAT_INTERVAL_MS(): number {
    return this.config.heartbeatIntervalMs ?? this.DEFAULT_HEARTBEAT_INTERVAL_MS;
  }

  constructor(
    config: DiscordVoiceConfig,
    logger: Logger,
    onTranscript: (userId: string, guildId: string, channelId: string, text: string) => Promise<string>,
  ) {
    this.config = config;
    this.logger = logger;
    this.onTranscript = onTranscript;
  }

  /**
   * Mark that the agent spoke via discord_voice tool during this transcript run.
   * processRecording will skip speaking the returned text to avoid duplicate playback.
   */
  markSpokeViaTool(guildId: string): void {
    const session = this.sessions.get(guildId);
    if (session) {
      session.spokeViaToolThisRun = true;
      this.logger.debug?.("[discord-voice] Agent spoke via discord_voice tool, will skip final speak");
    }
  }

  /**
   * Initialize providers lazily
   */
  private ensureProviders(): void {
    if (!this.sttProvider) {
      this.sttProvider = createSTTProvider(this.config);
    }
    if (!this.ttsProvider) {
      this.ttsProvider = createTTSProvider(this.config);
    }
    // Initialize streaming TTS (always, for lower latency)
    if (!this.streamingTTS) {
      this.streamingTTS = createStreamingTTSProvider(this.config);
    }
    // Initialize streaming STT if using Deepgram with streaming enabled
    if (!this.streamingSTT && this.config.sttProvider === "deepgram" && this.config.streamingSTT) {
      this.streamingSTT = createStreamingSTTProvider(this.config, this.logger);
    }
  }

  /**
   * Join a voice channel
   */
  async join(channel: VoiceBasedChannel): Promise<VoiceSession> {
    const existingSession = this.sessions.get(channel.guildId);
    if (existingSession) {
      if (existingSession.channelId === channel.id) {
        return existingSession;
      }
      // Leave current channel first
      await this.leave(channel.guildId);
    }

    this.ensureProviders();

    const connection = joinVoiceChannel({
      channelId: channel.id,
      guildId: channel.guildId,
      adapterCreator: channel.guild.voiceAdapterCreator,
      selfDeaf: false, // We need to hear users
      selfMute: false,
    });

    const player = createAudioPlayer();
    connection.subscribe(player);

    const session: VoiceSession = {
      guildId: channel.guildId,
      channelId: channel.id,
      channelName: channel.name,
      connection,
      player,
      userAudioStates: new Map(),
      speaking: false,
      processing: false,
      lastHeartbeat: Date.now(),
    };

    this.sessions.set(channel.guildId, session);

    // Wait for the connection to be ready
    try {
      await entersState(connection, VoiceConnectionStatus.Ready, 20_000);
      this.logger.info(`[discord-voice] Joined voice channel ${channel.name} in ${channel.guild.name}`);
    } catch (error) {
      connection.destroy();
      this.sessions.delete(channel.guildId);
      throw new Error(`Failed to join voice channel: ${error}`);
    }

    // Start listening to users
    this.startListening(session);

    // Start heartbeat for connection health monitoring
    this.startHeartbeat(session);

    // Handle connection state changes
    this.setupConnectionHandlers(session, channel);

    return session;
  }

  /**
   * Setup connection event handlers for auto-reconnect
   */
  private setupConnectionHandlers(session: VoiceSession, channel: VoiceBasedChannel): void {
    const connection = session.connection;

    connection.on(VoiceConnectionStatus.Disconnected, async () => {
      if (session.reconnecting) return;

      this.logger.warn(`[discord-voice] Disconnected from voice channel in ${channel.guild.name}`);

      try {
        // Try to reconnect within 5 seconds
        await Promise.race([
          entersState(connection, VoiceConnectionStatus.Signalling, 5_000),
          entersState(connection, VoiceConnectionStatus.Connecting, 5_000),
        ]);
        this.logger.info(`[discord-voice] Reconnecting to voice channel...`);
      } catch {
        // Connection is not recovering, attempt manual reconnect
        await this.attemptReconnect(session, channel);
      }
    });

    connection.on(VoiceConnectionStatus.Ready, () => {
      session.lastHeartbeat = Date.now();
      session.reconnecting = false;
      this.logger.info(`[discord-voice] Connection ready for ${channel.name}`);
    });

    connection.on("error", (error) => {
      this.logger.error(`[discord-voice] Connection error: ${error.message}`);
    });
  }

  /**
   * Attempt to reconnect to voice channel
   */
  private async attemptReconnect(session: VoiceSession, channel: VoiceBasedChannel, attempt = 1): Promise<void> {
    if (attempt > this.MAX_RECONNECT_ATTEMPTS) {
      this.logger.error(`[discord-voice] Max reconnection attempts reached, giving up`);
      await this.leave(session.guildId);
      return;
    }

    session.reconnecting = true;
    this.logger.info(`[discord-voice] Reconnection attempt ${attempt}/${this.MAX_RECONNECT_ATTEMPTS}`);

    try {
      // Destroy old connection
      session.connection.destroy();

      // Wait before reconnecting (exponential backoff)
      await new Promise((resolve) => setTimeout(resolve, 1000 * attempt));

      // Create new connection
      const newConnection = joinVoiceChannel({
        channelId: channel.id,
        guildId: channel.guildId,
        adapterCreator: channel.guild.voiceAdapterCreator,
        selfDeaf: false,
        selfMute: false,
      });

      const newPlayer = createAudioPlayer();
      newConnection.subscribe(newPlayer);

      // Update session
      session.connection = newConnection;
      session.player = newPlayer;

      // Wait for ready
      await entersState(newConnection, VoiceConnectionStatus.Ready, 20_000);

      session.reconnecting = false;
      session.lastHeartbeat = Date.now();

      // Restart listening
      this.startListening(session);

      // Setup handlers for new connection
      this.setupConnectionHandlers(session, channel);

      this.logger.info(`[discord-voice] Reconnected successfully`);
    } catch (error) {
      this.logger.error(
        `[discord-voice] Reconnection failed: ${error instanceof Error ? error.message : String(error)}`,
      );
      await this.attemptReconnect(session, channel, attempt + 1);
    }
  }

  /**
   * Start heartbeat monitoring for session
   */
  private startHeartbeat(session: VoiceSession): void {
    // Clear any existing heartbeat
    if (session.heartbeatInterval) {
      clearInterval(session.heartbeatInterval);
    }

    session.heartbeatInterval = setInterval(() => {
      const now = Date.now();
      const connectionState = session.connection.state.status;

      // Update heartbeat if connection is healthy
      if (connectionState === VoiceConnectionStatus.Ready) {
        session.lastHeartbeat = now;
        this.logger.debug?.(`[discord-voice] Heartbeat OK for guild ${session.guildId}`);
      } else if (session.lastHeartbeat && now - session.lastHeartbeat > this.HEARTBEAT_TIMEOUT_MS) {
        // Connection has been unhealthy for too long
        this.logger.warn(`[discord-voice] Heartbeat timeout, connection state: ${connectionState}`);

        // Don't attempt reconnect if already doing so
        if (!session.reconnecting) {
          // Trigger reconnection by destroying and rejoining
          this.logger.info(`[discord-voice] Triggering reconnection due to heartbeat timeout`);
          session.connection.destroy();
        }
      }
    }, this.HEARTBEAT_INTERVAL_MS);
  }

  /**
   * Leave a voice channel
   */
  async leave(guildId: string): Promise<boolean> {
    const session = this.sessions.get(guildId);
    if (!session) {
      return false;
    }

    // Clear heartbeat
    if (session.heartbeatInterval) {
      clearInterval(session.heartbeatInterval);
    }

    // Clear all user timers and streams
    for (const state of session.userAudioStates.values()) {
      if (state.silenceTimer) {
        clearTimeout(state.silenceTimer);
      }
      if (state.opusStream) {
        state.opusStream.destroy();
      }
      if (state.decoder) {
        state.decoder.destroy();
      }
    }

    // Close streaming STT sessions
    if (this.streamingSTT) {
      for (const userId of session.userAudioStates.keys()) {
        this.streamingSTT.closeSession(userId);
      }
    }

    session.connection.destroy();
    this.sessions.delete(guildId);
    this.logger.info(`[discord-voice] Left voice channel in guild ${guildId}`);
    return true;
  }

  /**
   * Start listening to voice in the channel
   */
  private startListening(session: VoiceSession): void {
    const receiver = session.connection.receiver;

    receiver.speaking.on("start", (userId: string) => {
      if (!this.isUserAllowed(userId)) {
        return;
      }

      // Ignore audio during cooldown period (prevents echo from triggering)
      if (session.lastSpokeAt && Date.now() - session.lastSpokeAt < SPEAK_COOLDOWN_VAD_MS) {
        this.logger.debug?.(`[discord-voice] Ignoring speech during cooldown (likely echo)`);
        return;
      }

      this.logger.debug?.(`[discord-voice] User ${userId} started speaking`);

      // ═══════════════════════════════════════════════════════════════
      // BARGE-IN / ECHO SUPPRESSION
      // Discord's voice detection can't distinguish between the user talking
      // and echo from the bot's own audio playback. We disable barge-in while
      // speaking to prevent the bot from interrupting itself.
      // ═══════════════════════════════════════════════════════════════
      if (session.speaking) {
        // While bot is actively speaking, ignore all speech events
        // This prevents echo from triggering barge-in
        this.logger.debug?.(`[discord-voice] Ignoring speech while bot is speaking (echo suppression)`);
        return;
      }

      if (session.processing) {
        // While processing a request, don't start new recordings
        // Clear any accumulated streaming transcripts to prevent stale text
        if (this.streamingSTT) {
          this.streamingSTT.closeSession(userId);
        }
        this.logger.debug?.(`[discord-voice] Ignoring speech while processing`);
        return;
      }

      let state = session.userAudioStates.get(userId);
      if (!state) {
        state = {
          chunks: [],
          lastActivityMs: Date.now(),
          isRecording: false,
        };
        session.userAudioStates.set(userId, state);
      }

      // Clear any existing silence timer
      if (state.silenceTimer) {
        clearTimeout(state.silenceTimer);
        state.silenceTimer = undefined;
      }

      if (!state.isRecording) {
        state.isRecording = true;
        state.chunks = [];
        this.startRecording(session, userId);
      }

      state.lastActivityMs = Date.now();
    });

    receiver.speaking.on("end", (userId: string) => {
      if (!this.isUserAllowed(userId)) {
        return;
      }

      this.logger.debug?.(`[discord-voice] User ${userId} stopped speaking`);

      const state = session.userAudioStates.get(userId);
      if (!state || !state.isRecording) {
        return;
      }

      state.lastActivityMs = Date.now();

      // Clear previous timer – multiple "end" events must not spawn multiple processRecording calls
      if (state.silenceTimer) {
        clearTimeout(state.silenceTimer);
        state.silenceTimer = undefined;
      }

      // Set silence timer to process the recording
      state.silenceTimer = setTimeout(async () => {
        state.silenceTimer = undefined;
        if (state.isRecording) {
          const chunksToProcess = [...state.chunks];
          state.isRecording = false;
          state.chunks = [];

          // Clean up streams
          if (state.opusStream) {
            state.opusStream.destroy();
            state.opusStream = undefined;
          }
          if (state.decoder) {
            state.decoder.destroy();
            state.decoder = undefined;
          }

          if (chunksToProcess.length > 0) {
            await this.processRecording(session, userId, chunksToProcess);
          }
        }
      }, this.config.silenceThresholdMs);
    });
  }

  /**
   * Stop any current speech output (for barge-in)
   */
  private stopSpeaking(session: VoiceSession): void {
    // Stop main player
    if (session.player.state.status !== AudioPlayerStatus.Idle) {
      session.player.stop(true);
    }

    // Stop thinking player if active
    if (session.thinkingPlayer && session.thinkingPlayer.state.status !== AudioPlayerStatus.Idle) {
      session.thinkingPlayer.stop(true);
      session.thinkingPlayer.removeAllListeners();
      session.thinkingPlayer = undefined;
    }

    session.speaking = false;
  }

  /**
   * Start recording audio from a user
   */
  private startRecording(session: VoiceSession, userId: string): void {
    const state = session.userAudioStates.get(userId);
    if (!state) return;

    const opusStream = session.connection.receiver.subscribe(userId, {
      end: {
        behavior: EndBehaviorType.Manual,
      },
    });

    // Handle stream errors to prevent crashes
    opusStream.on("error", (error) => {
      this.logger.error(`[discord-voice] AudioReceiveStream error for user ${userId}: ${error.message}`);
    });

    state.opusStream = opusStream;

    // Decode Opus to PCM
    const decoder = new prism.opus.Decoder({
      rate: 48000,
      channels: 1,
      frameSize: 960,
    });

    state.decoder = decoder;
    opusStream.pipe(decoder);

    // If streaming STT is available and enabled, use it
    const useStreaming = this.streamingSTT && this.config.sttProvider === "deepgram" && this.config.streamingSTT;

    if (useStreaming && this.streamingSTT) {
      // Create streaming session for this user
      this.streamingSTT.getOrCreateSession(userId, (text, isFinal) => {
        if (isFinal) {
          this.logger.debug?.(`[discord-voice] Streaming transcript (final): "${text}"`);
        } else {
          this.logger.debug?.(`[discord-voice] Streaming transcript (interim): "${text}"`);
        }
      });

      decoder.on("data", (chunk: Buffer) => {
        if (state.isRecording) {
          // Send to streaming STT
          this.streamingSTT?.sendAudio(userId, chunk);

          // Also buffer for fallback/debugging
          state.chunks.push(chunk);
          state.lastActivityMs = Date.now();

          // Check max recording length
          const totalSize = state.chunks.reduce((sum, c) => sum + c.length, 0);
          const durationMs = totalSize / 2 / 48; // 16-bit samples at 48kHz
          if (durationMs >= this.config.maxRecordingMs) {
            this.logger.debug?.(`[discord-voice] Max recording length reached for user ${userId}`);
            state.isRecording = false;

            if (state.opusStream) {
              state.opusStream.destroy();
              state.opusStream = undefined;
            }
            if (state.decoder) {
              state.decoder.destroy();
              state.decoder = undefined;
            }

            this.processRecording(session, userId, [...state.chunks]);
            state.chunks = [];
          }
        }
      });
    } else {
      // Batch mode - just buffer audio
      decoder.on("data", (chunk: Buffer) => {
        if (state.isRecording) {
          state.chunks.push(chunk);
          state.lastActivityMs = Date.now();

          // Check max recording length
          const totalSize = state.chunks.reduce((sum, c) => sum + c.length, 0);
          const durationMs = totalSize / 2 / 48; // 16-bit samples at 48kHz
          if (durationMs >= this.config.maxRecordingMs) {
            this.logger.debug?.(`[discord-voice] Max recording length reached for user ${userId}`);
            state.isRecording = false;

            if (state.opusStream) {
              state.opusStream.destroy();
              state.opusStream = undefined;
            }
            if (state.decoder) {
              state.decoder.destroy();
              state.decoder = undefined;
            }

            this.processRecording(session, userId, [...state.chunks]);
            state.chunks = [];
          }
        }
      });
    }

    decoder.on("end", () => {
      this.logger.debug?.(`[discord-voice] Decoder stream ended for user ${userId}`);
    });

    decoder.on("error", (error: Error) => {
      this.logger.error(`[discord-voice] Decoder error for user ${userId}: ${error.message}`);
    });
  }

  /**
   * Process recorded audio through STT and get response
   */
  private async processRecording(session: VoiceSession, userId: string, chunks: Buffer[]): Promise<void> {
    if (!this.sttProvider || !this.ttsProvider) {
      return;
    }

    // Skip if already speaking (prevents overlapping responses)
    if (session.speaking) {
      this.logger.debug?.(`[discord-voice] Skipping processing - already speaking`);
      return;
    }

    // Skip if already processing another request (prevents duplicate responses)
    if (session.processing) {
      this.logger.debug?.(`[discord-voice] Skipping processing - already processing another request`);
      return;
    }

    // Cooldown after speaking to prevent echo/accidental triggers
    if (session.lastSpokeAt && Date.now() - session.lastSpokeAt < SPEAK_COOLDOWN_PROCESSING_MS) {
      this.logger.debug?.(`[discord-voice] Skipping processing - in cooldown period after speaking`);
      return;
    }

    const audioBuffer = Buffer.concat(chunks);

    // Skip very short recordings (likely noise) - check BEFORE setting processing lock
    const durationMs = audioBuffer.length / 2 / 48; // 16-bit samples at 48kHz
    if (durationMs < this.config.minAudioMs) {
      this.logger.debug?.(
        `[discord-voice] Skipping short recording (${Math.round(durationMs)}ms < ${this.config.minAudioMs}ms) for user ${userId}`,
      );
      return;
    }

    // Calculate RMS amplitude to filter out quiet sounds (keystrokes, background noise)
    const rms = this.calculateRMS(audioBuffer);
    const minRMS = getRmsThreshold(this.config.vadSensitivity);
    if (rms < minRMS) {
      this.logger.debug?.(
        `[discord-voice] Skipping quiet audio (RMS ${Math.round(rms)} < ${minRMS}) for user ${userId}`,
      );
      return;
    }

    // Set processing lock AFTER passing all filters
    session.processing = true;
    session.spokeViaToolThisRun = false;

    this.logger.info(
      `[discord-voice] Processing ${Math.round(durationMs)}ms of audio (RMS: ${Math.round(rms)}) from user ${userId}`,
    );

    try {
      let transcribedText = "";
      const fallbackList = this.config.sttFallbackProviders ?? [];

      const effectivePrimaryStt = this.getEffectiveSttProvider(session);
      const primaryIsWyoming = effectivePrimaryStt === "wyoming-whisper";

      const tryFallbacks = async (): Promise<string> => {
        for (const provider of fallbackList) {
          try {
            const r = await this.tryTranscribeWithProvider(audioBuffer, 48000, provider);
            if (r.text?.trim()) {
              if (!primaryIsWyoming) {
                session.fallbackSttProvider = provider;
                this.logger.info(`[discord-voice] Using fallback STT: ${provider} (session will stay on fallback)`);
              } else {
                this.logger.info(`[discord-voice] Using fallback STT: ${provider}`);
              }
              return r.text;
            }
          } catch (fbErr) {
            this.logger.warn(
              `[discord-voice] Fallback STT ${provider} failed: ${fbErr instanceof Error ? fbErr.message : String(fbErr)}`,
            );
          }
        }
        return "";
      };

      // Wyoming-whisper: always try primary first (service may be temporarily down). Others: stick to fallback once switched.
      if (session.fallbackSttProvider && !primaryIsWyoming) {
        try {
          const r = await this.tryTranscribeWithProvider(audioBuffer, 48000, session.fallbackSttProvider);
          transcribedText = r.text ?? "";
          if (!transcribedText?.trim()) session.fallbackSttProvider = undefined;
        } catch (fbErr) {
          this.logger.warn(
            `[discord-voice] Session fallback STT failed: ${fbErr instanceof Error ? fbErr.message : String(fbErr)}`,
          );
          session.fallbackSttProvider = undefined;
        }
      }

      if (!transcribedText) {
        // Use effective primary (override or config); streaming only when primary is Deepgram
        if (this.streamingSTT && effectivePrimaryStt === "deepgram" && this.config.streamingSTT) {
          transcribedText = this.streamingSTT.finalizeSession(userId);

          // Fallback to batch if streaming didn't capture anything
          if (!transcribedText || transcribedText.trim().length === 0) {
            this.logger.debug?.(`[discord-voice] Streaming empty, falling back to batch STT`);
            try {
              const r = await this.tryTranscribeWithProvider(audioBuffer, 48000, "deepgram");
              transcribedText = r.text ?? "";
            } catch (batchErr) {
              if (fallbackList.length > 0 && isRetryableSttError(batchErr)) {
                this.logger.warn(`[discord-voice] Primary STT failed, trying fallbacks: [${fallbackList.join(", ")}]`);
                transcribedText = await tryFallbacks();
              } else throw batchErr;
            }
          }
        } else {
          try {
            const r = await this.tryTranscribeWithProvider(audioBuffer, 48000, effectivePrimaryStt);
            transcribedText = r.text ?? "";
          } catch (batchErr) {
            if (fallbackList.length > 0 && isRetryableSttError(batchErr)) {
              this.logger.warn(`[discord-voice] Primary STT failed, trying fallbacks: [${fallbackList.join(", ")}]`);
              transcribedText = await tryFallbacks();
            } else throw batchErr;
          }
        }
      }

      if (!transcribedText || transcribedText.trim().length === 0) {
        this.logger.debug?.(`[discord-voice] Empty transcription for user ${userId}`);
        session.processing = false;
        return;
      }

      // Dedupe: skip if same transcript was just processed (e.g. duplicate "end" events, gateway relay)
      const trimmed = transcribedText.trim();
      const now = Date.now();
      const dedupeWindowMs = 5000;
      if (
        session.lastProcessedTranscript === trimmed &&
        session.lastProcessedTranscriptAt !== undefined &&
        session.lastProcessedTranscriptAt !== null &&
        now - session.lastProcessedTranscriptAt < dedupeWindowMs
      ) {
        this.logger.debug?.(`[discord-voice] Skipping duplicate transcript (same text within ${dedupeWindowMs}ms)`);
        session.processing = false;
        return;
      }
      session.lastProcessedTranscript = trimmed;
      session.lastProcessedTranscriptAt = now;

      const sttInfo = this.getSttProviderInfo(session);
      this.logger.info(
        `[discord-voice] Transcribed: "${transcribedText}" (STT: ${sttInfo.provider} / ${sttInfo.model})`,
      );

      // Play looping thinking sound while processing (if enabled)
      const stopThinking = await this.startThinkingLoop(session);

      let response: string;
      try {
        // Get response from agent
        response = await this.onTranscript(userId, session.guildId, session.channelId, transcribedText);
      } finally {
        // Always stop thinking sound, even on error
        stopThinking();
        const delayMs = this.config.thinkingSound?.stopDelayMs ?? 50;
        if (delayMs > 0) {
          await new Promise((resolve) => setTimeout(resolve, delayMs));
        }
      }

      if (!response || response.trim().length === 0) {
        session.processing = false;
        return;
      }

      // Skip if agent already spoke via discord_voice tool (avoids duplicate playback)
      // Use current session from map: agent's auto-join may have replaced session during run
      const currentSession = this.sessions.get(session.guildId) ?? session;
      if (currentSession.spokeViaToolThisRun) {
        this.logger.debug?.("[discord-voice] Skipping speak – agent already spoke via discord_voice tool");
        session.processing = false;
        return;
      }

      // Ensure main player is subscribed before speaking
      session.connection.subscribe(session.player);

      // Synthesize and play response
      await this.speak(session.guildId, response);
    } catch (error) {
      this.logger.error(
        `[discord-voice] Error processing audio: ${error instanceof Error ? error.message : String(error)}`,
      );
    } finally {
      session.processing = false;
    }
  }

  /**
   * Try to transcribe using a specific STT provider (for fallback)
   */
  private async tryTranscribeWithProvider(
    audioBuffer: Buffer,
    sampleRate: number,
    provider:
      | "whisper"
      | "gpt4o-mini"
      | "gpt4o-transcribe"
      | "gpt4o-transcribe-diarize"
      | "deepgram"
      | "local-whisper"
      | "wyoming-whisper",
  ): Promise<STTResult> {
    const overrideConfig = { ...this.config, sttProvider: provider };
    const stt = createSTTProvider(overrideConfig);
    return stt.transcribe(audioBuffer, sampleRate);
  }

  /**
   * Try to get an audio resource using a specific TTS provider (for fallback)
   */
  private async tryGetResourceWithProvider(
    text: string,
    provider: "openai" | "elevenlabs" | "deepgram" | "polly" | "kokoro" | "edge",
  ): Promise<ReturnType<typeof createAudioResource> | null> {
    const overrideConfig = { ...this.config, ttsProvider: provider };
    const fallbackTts = createTTSProvider(overrideConfig);
    const fallbackStreaming = createStreamingTTSProvider(overrideConfig);

    // Try streaming first (OpenAI/ElevenLabs only)
    if (fallbackStreaming) {
      try {
        const streamResult = await fallbackStreaming.synthesizeStream(text);
        if (streamResult.format === "opus") {
          return createAudioResource(streamResult.stream, { inputType: StreamType.OggOpus });
        }
        return createAudioResource(streamResult.stream);
      } catch {
        // Fall through to batch
      }
    }

    // Batch
    const ttsResult = await fallbackTts.synthesize(text);
    return createResourceFromTTSResult(ttsResult);
  }

  /**
   * Speak text in the voice channel
   */
  async speak(guildId: string, rawText: string): Promise<void> {
    const session = this.sessions.get(guildId);
    if (!session) {
      throw new Error("Not connected to voice channel");
    }

    // If thinking sound is playing (e.g. agent called discord_voice speak tool during run),
    // stop it and re-subscribe to main player so our audio is actually heard
    if (session.thinkingPlayer && session.thinkingPlayer.state.status !== AudioPlayerStatus.Idle) {
      session.thinkingPlayer.removeAllListeners();
      session.thinkingPlayer.stop(true);
      session.thinkingPlayer = undefined;
      session.connection.subscribe(session.player);
    }

    // Strip emojis before TTS when noEmojiHint is set (avoids Kokoro/others reading them aloud)
    const text =
      this.config.noEmojiHint !== false
        ? rawText
            .replace(emojiRegex(), "")
            .replace(/\s{2,}/g, " ")
            .trim()
        : rawText;

    this.ensureProviders();

    if (!this.streamingTTS && !this.ttsProvider) {
      throw new Error("TTS provider not initialized");
    }

    session.speaking = true;
    session.startedSpeakingAt = Date.now();

    const waitForPlayback = () =>
      new Promise<void>((resolve) => {
        const onIdle = () => {
          session.speaking = false;
          session.lastSpokeAt = Date.now();
          session.player.off(AudioPlayerStatus.Idle, onIdle);
          session.player.off("error", onError);
          resolve();
        };
        const onError = (error: Error) => {
          this.logger.error(`[discord-voice] Playback error: ${error.message}`);
          session.speaking = false;
          session.lastSpokeAt = Date.now();
          session.player.off(AudioPlayerStatus.Idle, onIdle);
          session.player.off("error", onError);
          resolve();
        };
        session.player.on(AudioPlayerStatus.Idle, onIdle);
        session.player.on("error", onError);
      });
    try {
      let resource: ReturnType<typeof createAudioResource> | null = null;
      const fallbackList = this.config.ttsFallbackProviders ?? [];

      const tryFallbacks = async (): Promise<ReturnType<typeof createAudioResource> | null> => {
        for (const provider of fallbackList) {
          try {
            const r = await this.tryGetResourceWithProvider(text, provider);
            if (r) {
              session.fallbackTtsProvider = provider;
              this.logger.info(`[discord-voice] Using fallback TTS: ${provider} (session will stay on fallback)`);
              return r;
            }
          } catch (fbErr) {
            this.logger.warn(
              `[discord-voice] Fallback ${provider} failed: ${fbErr instanceof Error ? fbErr.message : String(fbErr)}`,
            );
          }
        }
        return null;
      };

      // If session already switched to fallback (e.g. quota hit earlier), use it for rest of session
      if (session.fallbackTtsProvider) {
        try {
          resource = await this.tryGetResourceWithProvider(text, session.fallbackTtsProvider);
          if (resource) {
            this.logger.debug?.(`[discord-voice] Using fallback TTS (session): ${session.fallbackTtsProvider}`);
          } else {
            session.fallbackTtsProvider = undefined;
          }
        } catch (fbErr) {
          this.logger.warn(
            `[discord-voice] Session fallback TTS failed: ${fbErr instanceof Error ? fbErr.message : String(fbErr)}`,
          );
          session.fallbackTtsProvider = undefined;
        }
      }

      const effectivePrimaryTts = this.getEffectiveTtsProvider(session);

      // If user overrode TTS provider, try that first
      if (!resource && session.ttsProviderOverride) {
        try {
          resource = await this.tryGetResourceWithProvider(text, effectivePrimaryTts);
        } catch (ovErr) {
          this.logger.warn(
            `[discord-voice] Override TTS ${effectivePrimaryTts} failed: ${ovErr instanceof Error ? ovErr.message : String(ovErr)}`,
          );
        }
      }

      // Try primary: streaming first (OpenAI/ElevenLabs), then batch (only when not already have resource)
      if (
        !resource &&
        this.streamingTTS &&
        (effectivePrimaryTts === "openai" || effectivePrimaryTts === "elevenlabs")
      ) {
        try {
          const streamResult = await this.streamingTTS.synthesizeStream(text);
          if (streamResult.format === "opus") {
            resource = createAudioResource(streamResult.stream, { inputType: StreamType.OggOpus });
          } else {
            resource = createAudioResource(streamResult.stream);
          }
          this.logger.debug?.(`[discord-voice] Using streaming TTS`);
        } catch (streamError) {
          this.logger.warn(
            `[discord-voice] Streaming TTS failed, falling back to buffered: ${streamError instanceof Error ? streamError.message : String(streamError)}`,
          );
          if (fallbackList.length > 0 && isRetryableTtsError(streamError)) {
            this.logger.warn(
              `[discord-voice] Primary TTS failed (quota/rate limit), trying fallbacks: [${fallbackList.join(", ")}]`,
            );
            resource = await tryFallbacks();
          }
        }
      }

      if (!resource) {
        try {
          resource = await this.tryGetResourceWithProvider(text, effectivePrimaryTts);
        } catch (batchError) {
          if (fallbackList.length > 0 && isRetryableTtsError(batchError)) {
            this.logger.warn(
              `[discord-voice] Primary TTS failed (quota/rate limit), trying fallbacks: [${fallbackList.join(", ")}]`,
            );
            resource = await tryFallbacks();
          }
          if (!resource) throw batchError;
        }
      }

      if (!resource) {
        throw new Error("Failed to create audio resource");
      }

      const ttsInfo = this.getTtsProviderInfo(session);
      this.logger.info(
        `[discord-voice] Speaking: "${text.substring(0, 50)}${text.length > 50 ? "..." : ""}" (TTS: ${ttsInfo.provider} / ${ttsInfo.model})`,
      );

      session.player.play(resource);
      await waitForPlayback();
    } catch (error) {
      session.speaking = false;
      session.lastSpokeAt = Date.now();
      throw error;
    }
  }

  /**
   * Start looping thinking sound, returns stop function
   * No-op if disabled or file not found
   */
  private async startThinkingLoop(session: VoiceSession): Promise<() => void> {
    const ts = this.config.thinkingSound;
    if (ts?.enabled === false) return () => {};

    let stopped = false;
    try {
      const fs = await import("node:fs");
      const path = await import("node:path");
      const { fileURLToPath } = await import("node:url");

      const __dirname = path.dirname(fileURLToPath(import.meta.url));
      const pluginRoot = path.resolve(path.join(__dirname, ".."));
      const pathRaw = ts?.path ?? "assets/thinking.mp3";

      // Security: reject absolute paths and path traversal to prevent arbitrary file reads
      if (path.isAbsolute(pathRaw)) {
        this.logger.warn("[discord-voice] Absolute thinking sound paths are not allowed for security reasons");
        return () => {};
      }
      if (pathRaw.includes("..")) {
        this.logger.warn("[discord-voice] Path traversal in thinking sound path is not allowed");
        return () => {};
      }
      const thinkingPath = path.resolve(path.join(pluginRoot, pathRaw));
      if (!thinkingPath.startsWith(pluginRoot)) {
        this.logger.warn("[discord-voice] Thinking sound path resolved outside plugin root");
        return () => {};
      }

      if (!fs.existsSync(thinkingPath)) {
        return () => {};
      }

      const audioData = fs.readFileSync(thinkingPath);
      const volume = typeof ts?.volume === "number" && ts.volume >= 0 && ts.volume <= 1 ? ts.volume : 0.7;

      // Create separate player for thinking sound
      const thinkingPlayer = createAudioPlayer();
      session.thinkingPlayer = thinkingPlayer;
      session.connection.subscribe(thinkingPlayer);

      const playLoop = () => {
        if (stopped || !thinkingPlayer) return;
        const resource = createAudioResource(Readable.from(Buffer.from(audioData)), {
          inlineVolume: true,
        });
        resource.volume?.setVolume(volume);
        thinkingPlayer.play(resource);
      };

      thinkingPlayer.on(AudioPlayerStatus.Idle, playLoop);
      playLoop(); // Start first play

      return () => {
        stopped = true;
        if (thinkingPlayer) {
          thinkingPlayer.removeAllListeners();
          thinkingPlayer.stop(true);
        }
        session.thinkingPlayer = undefined;
        // Re-subscribe main player immediately
        session.connection.subscribe(session.player);
      };
    } catch (error) {
      this.logger.debug?.(
        `[discord-voice] Error starting thinking loop: ${error instanceof Error ? error.message : String(error)}`,
      );
      return () => {
        session.thinkingPlayer = undefined;
        session.connection.subscribe(session.player);
      };
    }
  }

  /**
   * Calculate RMS (Root Mean Square) amplitude of audio buffer
   * Used to filter out quiet sounds like keystrokes and background noise
   */
  private calculateRMS(audioBuffer: Buffer): number {
    // Audio is 16-bit signed PCM
    const samples = audioBuffer.length / 2;
    if (samples === 0) return 0;

    let sumSquares = 0;
    for (let i = 0; i < audioBuffer.length; i += 2) {
      const sample = audioBuffer.readInt16LE(i);
      sumSquares += sample * sample;
    }

    return Math.sqrt(sumSquares / samples);
  }

  /**
   * Check if a user is allowed to use voice
   */
  private isUserAllowed(userId: string): boolean {
    if (this.config.allowedUsers.length === 0) {
      return true;
    }
    return this.config.allowedUsers.includes(userId);
  }

  /**
   * Get session for a guild
   */
  getSession(guildId: string): VoiceSession | undefined {
    return this.sessions.get(guildId);
  }

  /**
   * Get all active sessions
   */
  getAllSessions(): VoiceSession[] {
    return Array.from(this.sessions.values());
  }

  /**
   * Set runtime overrides for a guild (STT provider, TTS provider, model, think level)
   */
  setVoiceConfig(
    guildId: string,
    overrides: {
      sttProvider?: DiscordVoiceConfig["sttProvider"] | null;
      ttsProvider?: DiscordVoiceConfig["ttsProvider"] | null;
      model?: string | null;
      thinkLevel?: "off" | "low" | "medium" | "high" | null;
    },
  ): boolean {
    const session = this.sessions.get(guildId);
    if (!session) return false;
    if (overrides.sttProvider !== undefined) {
      session.sttProviderOverride = overrides.sttProvider ?? undefined;
    }
    if (overrides.ttsProvider !== undefined) {
      session.ttsProviderOverride = overrides.ttsProvider ?? undefined;
    }
    if (overrides.model !== undefined) {
      session.modelOverride = overrides.model ?? undefined;
    }
    if (overrides.thinkLevel !== undefined) {
      session.thinkLevelOverride = overrides.thinkLevel ?? undefined;
    }
    this.logger.info(
      `[discord-voice] Voice config updated for guild ${guildId}: STT=${session.sttProviderOverride ?? "default"}, TTS=${session.ttsProviderOverride ?? "default"}, model=${session.modelOverride ?? "default"}, think=${session.thinkLevelOverride ?? "default"}`,
    );
    return true;
  }

  /**
   * Reset STT and TTS fallbacks for a guild – next request will try primary providers again
   */
  resetFallbacks(guildId: string): boolean {
    const session = this.sessions.get(guildId);
    if (!session) return false;
    const hadStt = Boolean(session.fallbackSttProvider);
    const hadTts = Boolean(session.fallbackTtsProvider);
    session.fallbackSttProvider = undefined;
    session.fallbackTtsProvider = undefined;
    if (hadStt || hadTts) {
      this.logger.info(`[discord-voice] Reset fallbacks for guild ${guildId} (STT: ${hadStt}, TTS: ${hadTts})`);
    }
    return hadStt || hadTts;
  }

  /**
   * Get effective primary STT provider (override or config)
   */
  getEffectiveSttProvider(session: VoiceSession): typeof this.config.sttProvider {
    return session.sttProviderOverride ?? this.config.sttProvider;
  }

  /**
   * Get effective primary TTS provider (override or config)
   */
  getEffectiveTtsProvider(session: VoiceSession): typeof this.config.ttsProvider {
    return session.ttsProviderOverride ?? this.config.ttsProvider;
  }

  /**
   * Resolve effective STT provider and model string for display
   */
  getSttProviderInfo(session: VoiceSession): { provider: string; model: string } {
    const p = session.fallbackSttProvider ?? session.sttProviderOverride ?? this.config.sttProvider;
    const cfg = this.config;
    let model = "";
    switch (p) {
      case "whisper":
        model = cfg.openai?.whisperModel ?? "whisper-1";
        break;
      case "gpt4o-mini":
      case "gpt4o-transcribe":
      case "gpt4o-transcribe-diarize":
        model = p;
        break;
      case "deepgram":
        model = cfg.deepgram?.model ?? "nova-2";
        break;
      case "local-whisper":
        model = cfg.localWhisper?.model ?? "Xenova/whisper-tiny.en";
        break;
      case "wyoming-whisper": {
        const w = cfg.wyomingWhisper;
        model = w?.uri ?? `${w?.host ?? "127.0.0.1"}:${w?.port ?? 10300}`;
        break;
      }
      default:
        model = p;
    }
    return { provider: p, model };
  }

  /**
   * Resolve effective TTS provider and model/voice string for display
   */
  getTtsProviderInfo(session: VoiceSession): { provider: string; model: string } {
    const p = session.fallbackTtsProvider ?? session.ttsProviderOverride ?? this.config.ttsProvider;
    const cfg = this.config;
    let model = "";
    switch (p) {
      case "openai":
        model = `${cfg.openai?.voice ?? "nova"} (${cfg.openai?.ttsModel ?? "tts-1"})`;
        break;
      case "elevenlabs":
        model = `${cfg.elevenlabs?.voiceId ?? "default"} (${cfg.elevenlabs?.modelId ?? "turbo"})`;
        break;
      case "deepgram":
        model = cfg.deepgram?.ttsModel ?? cfg.deepgram?.model ?? "aura-asteria-en";
        break;
      case "polly":
        model = cfg.polly?.voiceId ?? "Joanna";
        break;
      case "kokoro":
        model = `${cfg.kokoro?.voice ?? "af_heart"} (${cfg.kokoro?.modelId ?? "Kokoro-82M"})`;
        break;
      case "edge":
        model = cfg.edge?.voice ?? "de-DE-KatjaNeural";
        break;
      default:
        model = p;
    }
    return { provider: p, model };
  }

  /**
   * Destroy all connections
   */
  async destroy(): Promise<void> {
    // Close streaming STT
    if (this.streamingSTT) {
      this.streamingSTT.closeAll();
    }

    const guildIds = Array.from(this.sessions.keys());
    for (const guildId of guildIds) {
      await this.leave(guildId);
    }
  }
}


path: tsconfig.json
content: {
  "compilerOptions": {
    "target": "ES2022",
    "module": "NodeNext",
    "moduleResolution": "NodeNext",
    "esModuleInterop": true,
    "strict": true,
    "noUncheckedIndexedAccess": true,
    "noPropertyAccessFromIndexSignature": true,
    "noFallthroughCasesInSwitch": true,
    "forceConsistentCasingInFileNames": true,
    "skipLibCheck": true,
    "noEmit": true,
    "declaration": false,
    "resolveJsonModule": true,
    "lib": ["ES2022"]
  },
  "include": ["*.ts", "src/**/*.ts"],
  "exclude": ["node_modules"]
}


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