"""add optional external OIDC identity

Revision ID: a81d0ce9f662
Revises: f43d829ab610
"""

import sqlalchemy as sa

from alembic import op

revision = "a81d0ce9f662"
down_revision = "f43d829ab610"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.add_column("users", sa.Column("identity_provider", sa.String(80), nullable=True))
    op.add_column("users", sa.Column("external_subject", sa.String(255), nullable=True))
    op.create_unique_constraint(
        "uq_user_external_identity", "users", ["identity_provider", "external_subject"]
    )


def downgrade() -> None:
    op.drop_constraint("uq_user_external_identity", "users", type_="unique")
    op.drop_column("users", "external_subject")
    op.drop_column("users", "identity_provider")