from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    model_config = SettingsConfigDict(env_file=".env", extra="ignore")

    app_env: str = "production"
    app_base_url: str = "http://localhost:8080"
    app_port: int = 8080
    app_secret_key: str
    token_encryption_key: str

    database_url: str

    google_client_id: str = ""
    google_client_secret: str = ""
    google_redirect_uri: str = ""
    allowed_google_email: str = ""

    # Google/YouTube endpoints (AGENTS.md rule 12): configurable via env,
    # defaults keep the current behaviour without touching .env.
    google_auth_uri: str = "https://accounts.google.com/o/oauth2/auth"
    google_token_uri: str = "https://oauth2.googleapis.com/token"
    google_userinfo_uri: str = "https://www.googleapis.com/oauth2/v3/userinfo"
    google_revoke_uri: str = "https://oauth2.googleapis.com/revoke"
    youtube_api_base_url: str = "https://www.googleapis.com/youtube/v3"
    youtube_watch_url_template: str = "https://www.youtube.com/watch?v={video_id}"

    metube_api_base_url: str = "http://127.0.0.1:8081"
    metube_public_base_url: str = "http://127.0.0.1:8081"
    metube_container_download_dir: str = "/downloads"
    metube_request_timeout_seconds: int = 30

    subscriptions_sync_interval_hours: int = 6
    # Videos sync is no longer scheduled: it is triggered by user activity
    # (any authenticated request) after this much idle time since the last
    # completed sync.
    videos_sync_idle_hours: int = 2
    # Hard history-depth limit per channel per videos sync: at most the
    # newest N playlist items are considered; anything older is never
    # backfilled by design (full channel history is out of scope).
    videos_backfill_cap: int = 200
    # Stop playlistItems pagination for a channel once this many already
    # known video ids are seen in a row (the rest of the playlist is history
    # we have already synced).
    videos_known_stop_threshold: int = 50
    new_videos_window_days: int = 2

    log_level: str = "INFO"


settings = Settings()