"""A watched Takeout video's length, and the channels a user put out of their list

Revision ID: 0115_takeout_channels
Revises: 0114_video_unmarks
Create Date: 2026-10-24

The "channels you watch but do not follow" list counts a user's watched videos over five minutes
by channel. The length is asked of YouTube for that list and kept on the Takeout row; a channel the
user does not want on the list is kept apart.
"""

import sqlalchemy as sa
from alembic import op

revision: str = "0115_takeout_channels"
down_revision: str | None = "0114_video_unmarks"
branch_labels: str | None = None
depends_on: str | None = None


def upgrade() -> None:
    op.add_column(
        "takeout_items", sa.Column("looked_up_at", sa.DateTime(timezone=True), nullable=True)
    )
    op.add_column("takeout_items", sa.Column("duration_seconds", sa.Integer(), nullable=True))
    op.create_table(
        "takeout_channel_dismissals",
        sa.Column("id", sa.Integer(), primary_key=True),
        sa.Column(
            "user_id",
            sa.Integer(),
            sa.ForeignKey("users.id", ondelete="CASCADE"),
            nullable=False,
        ),
        sa.Column("channel_id", sa.String(32), nullable=False),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.func.now(),
            nullable=False,
        ),
        sa.UniqueConstraint("user_id", "channel_id", name="uq_takeout_channel_dismissal"),
    )


def downgrade() -> None:
    op.drop_table("takeout_channel_dismissals")
    op.drop_column("takeout_items", "duration_seconds")
    op.drop_column("takeout_items", "looked_up_at")