"""videos

Revision ID: 0004_videos
Revises: 0003_categories
Create Date: 2026-09-16

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa

revision: str = "0004_videos"
down_revision: Union[str, None] = "0003_categories"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "videos",
        sa.Column("id", sa.Integer(), primary_key=True, autoincrement=True),
        sa.Column("youtube_video_id", sa.String(length=32), nullable=False),
        sa.Column("channel_id", sa.Integer(), sa.ForeignKey("channels.id"), nullable=False),
        sa.Column("title", sa.String(length=500), nullable=False),
        sa.Column("description", sa.Text(), nullable=True),
        sa.Column("thumbnail_url", sa.String(), nullable=True),
        sa.Column("published_at", sa.DateTime(timezone=True), nullable=False),
        sa.Column("duration_seconds", sa.Integer(), nullable=True),
        sa.Column("youtube_url", sa.String(), nullable=False),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.func.now(), nullable=False),
        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.func.now(), nullable=False),
        sa.UniqueConstraint("youtube_video_id", name="uq_videos_youtube_video_id"),
    )
    op.create_index("ix_videos_youtube_video_id", "videos", ["youtube_video_id"])
    op.create_index("ix_videos_channel_id", "videos", ["channel_id"])
    op.create_index("ix_videos_published_at", "videos", ["published_at"])


def downgrade() -> None:
    op.drop_index("ix_videos_published_at", table_name="videos")
    op.drop_index("ix_videos_channel_id", table_name="videos")
    op.drop_index("ix_videos_youtube_video_id", table_name="videos")
    op.drop_table("videos")