"""Persist workspace-bound human-user grants."""

from __future__ import annotations

import sqlalchemy as sa
from alembic import op

revision = "0007_user_grants"
down_revision = "0006_service_accounts"
branch_labels = None
depends_on = None


def upgrade() -> None:
    """Create human-user knowledge-space grants."""

    op.create_table(
        "user_grants",
        sa.Column("id", sa.Uuid(), primary_key=True),
        sa.Column("workspace_id", sa.Uuid(), nullable=False),
        sa.Column("user_id", sa.Uuid(), nullable=False),
        sa.Column("knowledge_space_id", sa.Uuid(), nullable=False),
        sa.Column("role", sa.String(32), nullable=False),
        sa.Column("active", sa.Boolean(), nullable=False, server_default=sa.true()),
        sa.Column(
            "created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()
        ),
        sa.ForeignKeyConstraint(
            ["knowledge_space_id", "workspace_id"],
            ["control.spaces.id", "control.spaces.workspace_id"],
            ondelete="CASCADE",
        ),
        sa.UniqueConstraint(
            "user_id", "knowledge_space_id", "role", name="uq_user_grants_user_space_role"
        ),
        schema="control",
    )


def downgrade() -> None:
    """Remove human-user grants."""

    op.drop_table("user_grants", schema="control")