import unittest

from admin_app.db.models import ToolMetadata
from shared.contracts import ToolLifecycleStatus


class ToolMetadataModelTests(unittest.TestCase):
    def test_tool_metadata_declares_expected_table_and_columns(self):
        self.assertEqual(ToolMetadata.__tablename__, "tool_metadata")
        self.assertIn("metadata_id", ToolMetadata.__table__.columns)
        self.assertIn("draft_id", ToolMetadata.__table__.columns)
        self.assertIn("tool_version_id", ToolMetadata.__table__.columns)
        self.assertIn("tool_name", ToolMetadata.__table__.columns)
        self.assertIn("display_name", ToolMetadata.__table__.columns)
        self.assertIn("domain", ToolMetadata.__table__.columns)
        self.assertIn("description", ToolMetadata.__table__.columns)
        self.assertIn("parameters_json", ToolMetadata.__table__.columns)
        self.assertIn("version_number", ToolMetadata.__table__.columns)
        self.assertIn("status", ToolMetadata.__table__.columns)
        self.assertIn("author_staff_account_id", ToolMetadata.__table__.columns)
        self.assertIn("author_display_name", ToolMetadata.__table__.columns)
        self.assertIn("created_at", ToolMetadata.__table__.columns)
        self.assertIn("updated_at", ToolMetadata.__table__.columns)

    def test_tool_metadata_uses_expected_constraints_and_defaults(self):
        draft_foreign_keys = list(ToolMetadata.__table__.columns["draft_id"].foreign_keys)
        self.assertEqual(len(draft_foreign_keys), 1)
        self.assertEqual(str(draft_foreign_keys[0].target_fullname), "tool_drafts.id")

        version_foreign_keys = list(ToolMetadata.__table__.columns["tool_version_id"].foreign_keys)
        self.assertEqual(len(version_foreign_keys), 1)
        self.assertEqual(str(version_foreign_keys[0].target_fullname), "tool_versions.id")

        author_foreign_keys = list(ToolMetadata.__table__.columns["author_staff_account_id"].foreign_keys)
        self.assertEqual(len(author_foreign_keys), 1)
        self.assertEqual(str(author_foreign_keys[0].target_fullname), "staff_accounts.id")

        status_column = ToolMetadata.__table__.columns["status"]
        self.assertEqual(status_column.default.arg, ToolLifecycleStatus.DRAFT)
        self.assertEqual(status_column.type.process_bind_param("archived", None), "archived")
        self.assertEqual(status_column.type.process_result_value("draft", None), ToolLifecycleStatus.DRAFT)

        unique_constraints = {constraint.name for constraint in ToolMetadata.__table__.constraints}
        self.assertIn("uq_tool_metadata_tool_name_version_number", unique_constraints)
        self.assertTrue(ToolMetadata.__table__.columns["tool_version_id"].unique)


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