from flask import Flask, request, Response
from io import BytesIO
import torch
from av import open as avopen
from typing import Dict, List
import re_matching
import utils
from infer import infer, get_net_g, latest_version
from scipy.io import wavfile
import gradio as gr
from config import config

# Flask Init
app = Flask(__name__)
app.config["JSON_AS_ASCII"] = False


def replace_punctuation(text, i=2):
    punctuation = "，。？！"
    for char in punctuation:
        text = text.replace(char, char * i)
    return text


def wav2(i, o, format):
    inp = avopen(i, "rb")
    out = avopen(o, "wb", format=format)
    if format == "ogg":
        format = "libvorbis"

    ostream = out.add_stream(format)

    for frame in inp.decode(audio=0):
        for p in ostream.encode(frame):
            out.mux(p)

    for p in ostream.encode(None):
        out.mux(p)

    out.close()
    inp.close()


net_g_List = []
hps_List = []
# 模型角色字典
# 使用方法 chr_name = chrsMap[model_id][chr_id]
chrsMap: List[Dict[int, str]] = list()

# 加载模型
models = config.server_config.models
for model in models:
    hps_List.append(utils.get_hparams_from_file(model["config"]))
    # 添加角色字典
    chrsMap.append(dict())
    for name, cid in hps_List[-1].data.spk2id.items():
        chrsMap[-1][cid] = name
    version = (
        hps_List[-1].version if hasattr(hps_List[-1], "version") else latest_version
    )
    net_g_List.append(
        get_net_g(
            model_path=model["model"],
            version=version,
            device=model["device"],
            hps=hps_List[-1],
        )
    )


def generate_audio(
    slices,
    sdp_ratio,
    noise_scale,
    noise_scale_w,
    length_scale,
    speaker,
    language,
):
    audio_list = []
    silence = np.zeros(hps.data.sampling_rate // 2, dtype=np.int16)
    with torch.no_grad():
        for piece in slices:
            audio = infer(
                piece,
                sdp_ratio=sdp_ratio,
                noise_scale=noise_scale,
                noise_scale_w=noise_scale_w,
                length_scale=length_scale,
                sid=speaker,
                language=language,
                hps=hps,
                net_g=net_g,
                device=device,
            )
            audio16bit = gr.processing_utils.convert_to_16_bit_wav(audio)
            audio_list.append(audio16bit)
            audio_list.append(silence)  # 将静音添加到列表中
    return audio_list


@app.route("/")
def main():
    try:
        model = int(request.args.get("model"))
        speaker = request.args.get("speaker", "")  # 指定人物名
        speaker_id = request.args.get("speaker_id", None)  # 直接指定id
        text = request.args.get("text").replace("/n", "")
        sdp_ratio = float(request.args.get("sdp_ratio", 0.2))
        noise = float(request.args.get("noise", 0.5))
        noisew = float(request.args.get("noisew", 0.6))
        length = float(request.args.get("length", 1.2))
        language = request.args.get("language")
        if length >= 2:
            return "Too big length"
        if len(text) >= 250:
            return "Too long text"
        fmt = request.args.get("format", "wav")
        if None in (speaker, text):
            return "Missing Parameter"
        if fmt not in ("mp3", "wav", "ogg"):
            return "Invalid Format"
        if language not in ("JP", "ZH", "EN", "mix"):
            return "Invalid language"
    except:
        return "Invalid Parameter"

    if speaker_id is not None:
        if speaker_id.isdigit():
            speaker = chrsMap[model][int(speaker_id)]
    audio_list = []
    if language == "mix":
        bool_valid, str_valid = re_matching.validate_text(text)
        if not bool_valid:
            return str_valid, (
                hps.data.sampling_rate,
                np.concatenate([np.zeros(hps.data.sampling_rate // 2)]),
            )
        result = re_matching.text_matching(text)
        for one in result:
            _speaker = one.pop()
            for lang, content in one:
                audio_list.extend(
                    generate_audio(
                        content.split("|"),
                        sdp_ratio,
                        noise_scale,
                        noise_scale_w,
                        length_scale,
                        _speaker,
                        lang,
                    )
                )
    else:
        audio_list.extend(
            generate_audio(
                text.split("|"),
                sdp_ratio,
                noise_scale,
                noise_scale_w,
                length_scale,
                speaker,
                language,
            )
        )

    audio_concat = np.concatenate(audio_list)
    with BytesIO() as wav:
        wavfile.write(wav, hps_List[model].data.sampling_rate, audio_concat)
        torch.cuda.empty_cache()
        if fmt == "wav":
            return Response(wav.getvalue(), mimetype="audio/wav")
        wav.seek(0, 0)
        with BytesIO() as ofp:
            wav2(wav, ofp, fmt)
            return Response(
                ofp.getvalue(), mimetype="audio/mpeg" if fmt == "mp3" else "audio/ogg"
            )


if __name__ == "__main__":
    app.run(port=config.server_config.port, server_name="0.0.0.0")