"""User settings domain entity (general preferences + scrobbling config)."""

import uuid
from dataclasses import dataclass

# Defaults for a user who has never saved settings — the row is created lazily,
# so reads return these before the first write.
DEFAULT_THEME = "system"
DEFAULT_STREAM_QUALITY = "original"


@dataclass(frozen=True, slots=True)
class UserSettings:
    user_id: uuid.UUID
    theme: str
    stream_quality: str
    scrobble_enabled: bool
    scrobble_provider: str | None
    scrobble_username: str | None
    # Scrobbler session key / user token, encrypted at rest (never leaves the
    # server in plaintext). ``None`` until the user configures scrobbling.
    scrobble_session_key_enc: str | None

    @classmethod
    def defaults(cls, user_id: uuid.UUID) -> UserSettings:
        return cls(
            user_id=user_id,
            theme=DEFAULT_THEME,
            stream_quality=DEFAULT_STREAM_QUALITY,
            scrobble_enabled=False,
            scrobble_provider=None,
            scrobble_username=None,
            scrobble_session_key_enc=None,
        )