from datetime import datetime

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

from app.db import Base


class Video(Base):
    __tablename__ = "videos"

    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
    youtube_video_id: Mapped[str] = mapped_column(String(32), unique=True, nullable=False, index=True)
    channel_id: Mapped[int] = mapped_column(ForeignKey("channels.id"), nullable=False, index=True)
    title: Mapped[str] = mapped_column(String(500), nullable=False)
    description: Mapped[str | None] = mapped_column(Text, nullable=True)
    thumbnail_url: Mapped[str | None] = mapped_column(String, nullable=True)
    published_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, index=True)
    duration_seconds: Mapped[int | None] = mapped_column(Integer, nullable=True)
    youtube_url: Mapped[str] = mapped_column(String, nullable=False)
    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
    )