"""Add cloud_favorites table for photo likes/favorites.

Revision ID: 20260726_0002
Revises: 20260718_0001
Create Date: 2026-07-26
"""

from typing import Sequence

from alembic import op
import sqlalchemy as sa


revision: str = "20260726_0002"
down_revision: str | None = "20260718_0001"
branch_labels: str | Sequence[str] | None = None
depends_on: str | Sequence[str] | None = None


def upgrade() -> None:
    op.create_table(
        "cloud_favorites",
        sa.Column("id", sa.Uuid(), nullable=False),
        sa.Column("user_id", sa.Uuid(), nullable=False),
        sa.Column("cloud_id", sa.Uuid(), nullable=False),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.ForeignKeyConstraint(["cloud_id"], ["clouds.id"], ondelete="CASCADE"),
        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint("user_id", "cloud_id", name="uq_cloud_favorites_user_cloud"),
    )
    op.create_index("ix_cloud_favorites_user_id", "cloud_favorites", ["user_id"])
    op.create_index("ix_cloud_favorites_cloud_id", "cloud_favorites", ["cloud_id"])
    op.create_index(
        "ix_cloud_favorites_user_created",
        "cloud_favorites",
        ["user_id", sa.text("created_at DESC"), sa.text("id DESC")],
    )


def downgrade() -> None:
    op.drop_index("ix_cloud_favorites_user_created", table_name="cloud_favorites")
    op.drop_index("ix_cloud_favorites_cloud_id", table_name="cloud_favorites")
    op.drop_index("ix_cloud_favorites_user_id", table_name="cloud_favorites")
    op.drop_table("cloud_favorites")