"""Add unique index to members

Revision ID: a000d800f45f
Revises: 17cc8cb77be5
Create Date: 2024-03-21 15:52:09.403257

"""

from typing import Sequence, Union

import sqlalchemy as sa

from alembic import op

# revision identifiers, used by Alembic.
revision: str = "a000d800f45f"
down_revision: Union[str, None] = "17cc8cb77be5"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_index(
        "members_user_name_idx",
        "members",
        ["user_id", sa.text("lower(name)")],
        unique=True,
    )


def downgrade() -> None:
    op.drop_index("members_user_name_idx", table_name="members")