"""Application configuration using pydantic-settings."""
from functools import lru_cache
from pydantic_settings import BaseSettings


class Settings(BaseSettings):
    """Application settings loaded from environment variables."""
    
    # Database
    database_url: str = "sqlite+aiosqlite:///./domainwatch.db"
    
    # JWT Settings
    secret_key: str = "dev-secret-key-change-in-production"
    algorithm: str = "HS256"
    access_token_expire_minutes: int = 1440  # 24 hours
    
    # App Settings
    app_name: str = "DomainWatch"
    debug: bool = True
    
    # Email Settings (optional)
    smtp_host: str = ""
    smtp_port: int = 587
    smtp_user: str = ""
    smtp_password: str = ""
    email_from: str = ""
    
    # CORS Settings
    cors_origins: str = "http://localhost:3000,http://127.0.0.1:3000"
    
    # Scheduler Settings
    check_hour: int = 6
    check_minute: int = 0
    scheduler_check_interval_hours: int = 24
    
    # =================================
    # External API Credentials
    # =================================
    
    # DropCatch API (Official Partner API)
    # Docs: https://www.dropcatch.com/hiw/dropcatch-api
    dropcatch_client_id: str = ""
    dropcatch_client_secret: str = ""
    dropcatch_api_base: str = "https://api.dropcatch.com"
    
    # Sedo API (Partner API - XML-RPC)
    # Docs: https://api.sedo.com/apidocs/v1/
    # Find your credentials: Sedo.com → Mein Sedo → API-Zugang
    sedo_partner_id: str = ""
    sedo_sign_key: str = ""
    sedo_api_base: str = "https://api.sedo.com/api/v1/"
    
    # Moz API (SEO Data)
    moz_access_id: str = ""
    moz_secret_key: str = ""
    
    class Config:
        env_file = ".env"
        env_file_encoding = "utf-8"
        extra = "ignore"  # Ignore extra fields in .env


@lru_cache()
def get_settings() -> Settings:
    """Get cached settings instance."""
    return Settings()