"""Add google_id column to users table for Google OAuth.

Revision ID: 006
Revises: 005
Create Date: 2026-03-12
"""
from __future__ import annotations

from typing import Sequence, Union

import sqlalchemy as sa
from alembic import op

revision: str = "006"
down_revision: Union[str, None] = "005"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.add_column("users", sa.Column("google_id", sa.Text, nullable=True))
    op.create_unique_constraint("uq_users_google_id", "users", ["google_id"])


def downgrade() -> None:
    op.drop_constraint("uq_users_google_id", "users")
    op.drop_column("users", "google_id")
