from typing import TYPE_CHECKING

from sqlmodel import Field, Relationship

from app.models.base import BaseModel

if TYPE_CHECKING:
    from app.models.favorite import Favorite
    from app.models.playlist_sound import PlaylistSound
    from app.models.user import User


class Playlist(BaseModel, table=True):
    """Database model for a playlist."""

    user_id: int | None = Field(foreign_key="user.id", default=None)
    name: str = Field(unique=True, nullable=False)
    description: str | None = Field(default=None)
    genre: str | None = Field(default=None)
    is_main: bool = Field(default=False, nullable=False)
    is_current: bool = Field(default=False, nullable=False)
    is_deletable: bool = Field(default=True, nullable=False)

    # relationships
    user: "User" = Relationship(back_populates="playlists")
    playlist_sounds: list["PlaylistSound"] = Relationship(back_populates="playlist")
    favorites: list["Favorite"] = Relationship(back_populates="playlist")