from pydantic_settings import BaseSettings
from typing import List

class Settings(BaseSettings):
    # Database
    DATABASE_URL: str = "postgresql://whatssender:whatssender123@localhost:5432/whatssender"
    
    # Security
    JWT_SECRET: str = "your-secret-key-change-in-production"
    JWT_ALGORITHM: str = "HS256"
    ACCESS_TOKEN_EXPIRE_MINUTES: int = 60 * 24 * 7  # 7 days
    
    # CORS
    CORS_ORIGINS: str = "http://localhost:3000,http://localhost:5173"
    
    # Google OAuth
    GOOGLE_CLIENT_ID: str = ""
    GOOGLE_CLIENT_SECRET: str = ""
    GOOGLE_REDIRECT_URI: str = "http://localhost:8000/api/imports/google/callback"
    GOOGLE_TOKEN_ENCRYPTION_KEY: str = ""  # Fernet key
    
    # WhatsApp Provider
    WHATSAPP_PROVIDER: str = "mock"  # mock, cloud, or telegram
    WHATSAPP_CLOUD_ACCESS_TOKEN: str = ""
    WHATSAPP_CLOUD_PHONE_NUMBER_ID: str = ""
    WHATSAPP_WEBHOOK_VERIFY_TOKEN: str = ""
    
    # Telegram Provider (for testing)
    TELEGRAM_BOT_TOKEN: str = ""
    
    # Rate Limiting
    MAX_MESSAGES_PER_MINUTE: int = 20
    BATCH_SIZE: int = 10
    DAILY_LIMIT_PER_CAMPAIGN: int = 1000
    
    @property
    def cors_origins_list(self) -> List[str]:
        return [origin.strip() for origin in self.CORS_ORIGINS.split(",")]
    
    class Config:
        env_file = ".env"
        case_sensitive = True

settings = Settings()