import os
from typing import List, Union
from pydantic_settings import BaseSettings

class Settings(BaseSettings):
    PROJECT_NAME: str = "AuthSec FastAPI"
    API_V1_STR: str = "/api"
    PORT: int = 9119
    DEBUG: bool = True
    
    # Security
    SECRET_KEY: str = "cns-secret-key-change-this-in-production-authsec"
    ALGORITHM: str = "HS256"
    ACCESS_TOKEN_EXPIRE_MINUTES: int = 1440  # 24 hours
    
    # Database
    DATABASE_URL: str = "sqlite:///./authsec.db"
    
    # CORS
    CORS_ORIGINS: str = "http://localhost:4200,http://localhost:3000,http://127.0.0.1:4200,http://localhost:8080,*"

    # Email / SMTP Settings (mirrors Spring Boot JavaMailSender)
    SMTP_HOST: str = ""
    SMTP_PORT: int = 587
    SMTP_USER: str = ""
    SMTP_PASSWORD: str = ""
    SMTP_TLS: bool = True
    EMAILS_FROM_EMAIL: str = "noreply@authsec.com"

    @property
    def cors_origins_list(self) -> List[str]:
        if not self.CORS_ORIGINS:
            return ["*"]
        return [origin.strip() for origin in self.CORS_ORIGINS.split(",") if origin.strip()]

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

settings = Settings()