"""Phase 4: Idempotenz-Quittungen für die Outbox

Revision ID: 0006
Revises: 0005
Create Date: 2026-08-08
"""
from collections.abc import Sequence

import sqlalchemy as sa
from alembic import op

revision: str = "0006"
down_revision: str | None = "0005"
branch_labels: str | Sequence[str] | None = None
depends_on: str | Sequence[str] | None = None


def upgrade() -> None:
    op.create_table(
        "applied_op",
        sa.Column("op_id", sa.String(64), primary_key=True),
        sa.Column("list_id", sa.String(36), nullable=False),
        sa.Column("user_id", sa.String(36), nullable=True),
        sa.Column("kind", sa.String(32), nullable=False),
        sa.Column("result_id", sa.String(36), nullable=True),
        sa.Column("rev", sa.BigInteger(), nullable=False, server_default=sa.text("0")),
        sa.Column("created_at", sa.DateTime(), nullable=False, server_default=sa.func.now()),
        sa.ForeignKeyConstraint(["list_id"], ["shopping_list.id"], ondelete="CASCADE"),
        sa.ForeignKeyConstraint(["user_id"], ["user.id"], ondelete="SET NULL"),
        mysql_engine="InnoDB",
        mysql_charset="utf8mb4",
        mysql_collate="utf8mb4_unicode_ci",
    )
    op.create_index("ix_applied_op_list", "applied_op", ["list_id", "created_at"])


def downgrade() -> None:
    op.drop_index("ix_applied_op_list", table_name="applied_op")
    op.drop_table("applied_op")