from pydantic_settings import BaseSettings
from typing import Optional


class Settings(BaseSettings):
    # Database
    db_host: str = "localhost"
    db_port: int = 3306
    db_user: str = "root"
    db_password: str = ""
    db_name: str = "crypto_mining"

    # OpenRouter
    openrouter_api_key: str = ""
    openrouter_model: str = "openai/gpt-4o-mini"

    # CoinGecko
    coingecko_api_key: Optional[str] = None

    # Security
    api_secret_key: str = "change-me-in-production"
    rate_limit_per_minute: int = 60

    # App
    app_env: str = "development"
    log_level: str = "INFO"

    @property
    def database_url(self) -> str:
        return (
            f"mysql+pymysql://{self.db_user}:{self.db_password}"
            f"@{self.db_host}:{self.db_port}/{self.db_name}"
        )

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


settings = Settings()