import os
from pydantic import Field
from pydantic_settings import BaseSettings
from dotenv import load_dotenv

# Load .env from project root
load_dotenv(dotenv_path=os.path.join(os.path.dirname(__file__), "..", ".env"))


class Settings(BaseSettings):
    """Centralized configuration for all services."""

    # LLM Configuration
    openai_api_key: str = ""
    anthropic_api_key: str = ""
    google_api_key: str = ""
    mistral_api_key: str = ""
    default_llm_model: str = Field(validation_alias="LLM_MODEL")  # Required - set via LLM_MODEL in .env

    # Alpaca Configuration
    alpaca_api_key: str = ""
    alpaca_secret_key: str = ""
    alpaca_base_url: str = "https://paper-api.alpaca.markets"

    # Service URLs (for inter-service communication)
    market_data_url: str = "http://localhost:8001"
    financial_reports_url: str = "http://localhost:8002"
    chat_url: str = "http://localhost:8003"

    # Classification strategy
    classification_strategy: str = "extract_then_classify"

    # Frontend URL (for CORS)
    frontend_url: str = "http://localhost:5173"

    class Config:
        env_file = ".env"
        env_file_encoding = "utf-8"


settings = Settings()