from __future__ import annotations

import tempfile
import unittest
from pathlib import Path

from alembic.runtime.migration import MigrationContext
from sqlalchemy import create_engine, inspect

from govoplan_core.db.migrations import migrate_database
from govoplan_identity.backend.manifest import get_manifest as identity_manifest
from govoplan_idm.backend.manifest import get_manifest as idm_manifest
from govoplan_organizations.backend.manifest import (
    get_manifest as organizations_manifest,
)


class IdmMigrationTests(unittest.TestCase):
    def test_migrations_create_typed_relationship_tables_and_head(self) -> None:
        with tempfile.TemporaryDirectory(prefix="govoplan-idm-migration-") as directory:
            url = f"sqlite:///{Path(directory) / 'idm.db'}"
            migrate_database(
                database_url=url,
                enabled_modules=("identity", "organizations", "idm"),
                manifest_factories=(
                    identity_manifest,
                    organizations_manifest,
                    idm_manifest,
                ),
            )
            engine = create_engine(url)
            try:
                with engine.connect() as connection:
                    self.assertIn(
                        "c2d3e4f5a6b7",
                        set(MigrationContext.configure(connection).get_current_heads()),
                    )
                    self.assertEqual(
                        {
                            "idm_function_assignment_change_events",
                            "idm_function_assignment_changes",
                            "idm_identity_relationships",
                            "idm_organization_function_assignments",
                            "idm_tenant_settings",
                            "idm_typed_groups",
                        },
                        {
                            name
                            for name in inspect(connection).get_table_names()
                            if name.startswith("idm_")
                        },
                    )
                    change_columns = {
                        item["name"]
                        for item in inspect(connection).get_columns(
                            "idm_function_assignment_changes"
                        )
                    }
                    self.assertTrue(
                        {
                            "review_deadline_at",
                            "escalated_at",
                            "escalation_from_state",
                            "escalation_target_function_id",
                        }.issubset(change_columns)
                    )
            finally:
                engine.dispose()


if __name__ == "__main__":
    unittest.main()