"""VK catalog tables (albums + products)

Revision ID: 0004
Revises: 0003
Create Date: 2026-05-01

"""
from typing import Sequence, Union

import sqlalchemy as sa
from alembic import op

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


def upgrade() -> None:
    op.create_table(
        "vk_cached_albums",
        sa.Column("id", sa.Integer, primary_key=True, autoincrement=True),
        sa.Column("user_id", sa.Integer, sa.ForeignKey("users.id", ondelete="CASCADE"), nullable=False),
        sa.Column("vk_group_id", sa.String(50), nullable=False),
        sa.Column("album_id", sa.String(50), nullable=False),
        sa.Column("title", sa.String(255), nullable=False),
        sa.Column("count", sa.Integer, nullable=True),
        sa.Column("fetched_at", sa.DateTime, nullable=False),
        sa.UniqueConstraint("user_id", "vk_group_id", "album_id", name="uq_vk_cached_albums"),
    )
    op.create_index("ix_vk_cached_albums_user_group", "vk_cached_albums", ["user_id", "vk_group_id"])

    op.create_table(
        "vk_cached_products",
        sa.Column("id", sa.Integer, primary_key=True, autoincrement=True),
        sa.Column("user_id", sa.Integer, sa.ForeignKey("users.id", ondelete="CASCADE"), nullable=False),
        sa.Column("vk_group_id", sa.String(50), nullable=False),
        sa.Column("vk_product_id", sa.String(50), nullable=False),
        sa.Column("album_id", sa.String(50), nullable=True),
        sa.Column("name", sa.String(255), nullable=False),
        sa.Column("description", sa.Text, nullable=True),
        sa.Column("price", sa.Numeric(12, 2), nullable=True),
        sa.Column("availability", sa.Integer, nullable=True),
        sa.Column("thumb_url", sa.String(1024), nullable=True),
        sa.Column("fetched_at", sa.DateTime, nullable=False),
        sa.UniqueConstraint("user_id", "vk_group_id", "vk_product_id", name="uq_vk_cached_products"),
    )
    op.create_index(
        "ix_vk_cached_products_user_group_album",
        "vk_cached_products", ["user_id", "vk_group_id", "album_id"],
    )


def downgrade() -> None:
    op.drop_table("vk_cached_products")
    op.drop_table("vk_cached_albums")