from datetime import datetime

from sqlalchemy import Boolean, DateTime, String, Text, func
from sqlalchemy.orm import Mapped, mapped_column

from app.db import Base


class Channel(Base):
    __tablename__ = "channels"

    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
    youtube_channel_id: Mapped[str] = mapped_column(String(64), unique=True, nullable=False, index=True)
    youtube_subscription_id: Mapped[str | None] = mapped_column(String(64), nullable=True)
    title: Mapped[str] = mapped_column(String(255), nullable=False)
    description: Mapped[str | None] = mapped_column(Text, nullable=True)
    thumbnail_url: Mapped[str | None] = mapped_column(String, nullable=True)
    uploads_playlist_id: Mapped[str | None] = mapped_column(String(64), nullable=True)
    subscribed: Mapped[bool] = mapped_column(Boolean, nullable=False, default=True)
    last_synced_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False
    )