"""
Configuration management for the application.
Loads environment variables and provides application settings.
"""

from pydantic_settings import BaseSettings
from typing import Optional


class Settings(BaseSettings):
    """Application settings loaded from environment variables."""

    # JWT Configuration
    JWT_SECRET: str
    JWT_ALGORITHM: str = "HS256"
    JWT_EXPIRATION_DAYS: int = 7

    # Database Configuration
    DATABASE_URL: str

    # Application Configuration
    APP_NAME: str = "Todo API"
    DEBUG: bool = False

    # CORS Configuration
    CORS_ORIGINS: list[str] = [
        "http://localhost:3000",
        "http://127.0.0.1:3000"
    ]

    class Config:
        env_file = ".env"
        case_sensitive = True
        extra = "ignore"


# Global settings instance
settings = Settings()