"""
Configuration settings for the chatbot application.
Loads from environment variables with sensible defaults.
"""
import os
from dotenv import load_dotenv

# Load environment variables from .env file if it exists
load_dotenv()

# App Information
APP_NAME = os.getenv("APP_NAME", "Paul's Document Chatbot")
PRIMARY_COLOR = os.getenv("PRIMARY_COLOR", "#7E56C2")  # Purple-ish
SECONDARY_COLOR = os.getenv("SECONDARY_COLOR", "#4CAF50")  # Green-ish

# Paths
DATA_DIR = os.getenv("DATA_DIR", "data")
INDEX_DIR = os.getenv("INDEX_DIR", "index")

# LLM Configuration
ANTHROPIC_API_KEY = os.getenv("ANTHROPIC_API_KEY")
LLM_MODEL = os.getenv("LLM_MODEL", "claude-3-7-sonnet-20250219")
LLM_TEMPERATURE = float(os.getenv("LLM_TEMPERATURE", "0.1"))
LLM_MAX_TOKENS = int(os.getenv("LLM_MAX_TOKENS", "2048"))

# Embedding Configuration
EMBEDDING_MODEL = os.getenv("EMBEDDING_MODEL", "sentence-transformers/all-MiniLM-L6-v2")
EMBEDDING_DEVICE = os.getenv("EMBEDDING_DEVICE", "cpu")
EMBEDDING_BATCH_SIZE = int(os.getenv("EMBEDDING_BATCH_SIZE", "8"))

# Document Processing Configuration
CHUNK_SIZE = int(os.getenv("CHUNK_SIZE", "1024"))
CHUNK_OVERLAP = int(os.getenv("CHUNK_OVERLAP", "100"))

# Database Configuration (for future use)
DATABASE_URL = os.getenv("DATABASE_URL", "sqlite:///chatbot.db")

# Debug and logging
DEBUG = os.getenv("DEBUG", "False").lower() == "true"
LOG_LEVEL = os.getenv("LOG_LEVEL", "INFO")

# Function to get configuration as a dictionary
def get_chatbot_config():
    """Return chatbot configuration as a dictionary"""
    return {
        "model": LLM_MODEL,
        "temperature": LLM_TEMPERATURE,
        "max_tokens": LLM_MAX_TOKENS,
        "embedding_model": EMBEDDING_MODEL,
        "device": EMBEDDING_DEVICE,
        "embed_batch_size": EMBEDDING_BATCH_SIZE,
        "chunk_size": CHUNK_SIZE,
        "chunk_overlap": CHUNK_OVERLAP,
    }