myYouTube/backend/app/models/video.py

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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
)