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from unittest import mock

import pytest
from sqlalchemy import inspect
from sqlalchemy.orm.exc import NoResultFound

from superset.columns.models import Column
from superset.connectors.sqla.models import SqlaTable, TableColumn
from superset.extensions import db
from tests.integration_tests.base_tests import SupersetTestCase
from tests.integration_tests.fixtures.datasource import load_dataset_with_columns


class SqlaTableModelTest(SupersetTestCase):
    @pytest.mark.usefixtures("load_dataset_with_columns")
    def test_dual_update_column(self) -> None:
        """
        Test that when updating a sqla ``TableColumn``
        That the shadow ``Column`` is also updated
        """
        dataset = db.session.query(SqlaTable).filter_by(table_name="students").first()
        column = dataset.columns[0]
        column_name = column.column_name
        column.column_name = "new_column_name"
        SqlaTable.update_column(None, None, target=column)

        # refetch
        dataset = db.session.query(SqlaTable).filter_by(id=dataset.id).one()
        assert dataset.columns[0].column_name == "new_column_name"

        # reset
        column.column_name = column_name
        SqlaTable.update_column(None, None, target=column)

    @pytest.mark.usefixtures("load_dataset_with_columns")
    @mock.patch("superset.columns.models.Column")
    def test_dual_update_column_not_found(self, column_mock) -> None:
        """
        Test that when updating a sqla ``TableColumn``
        That the shadow ``Column`` is also updated
        """
        dataset = db.session.query(SqlaTable).filter_by(table_name="students").first()
        column = dataset.columns[0]
        column_uuid = column.uuid
        with mock.patch("sqlalchemy.orm.query.Query.one", side_effect=NoResultFound):
            SqlaTable.update_column(None, None, target=column)

        session = inspect(column).session

        session.flush()

        # refetch
        dataset = db.session.query(SqlaTable).filter_by(id=dataset.id).one()
        # it should create a new uuid
        assert dataset.columns[0].uuid != column_uuid

        # reset
        column.uuid = column_uuid
        SqlaTable.update_column(None, None, target=column)

    @pytest.mark.usefixtures("load_dataset_with_columns")
    def test_to_sl_column_no_known_columns(self) -> None:
        """
        Test that the function returns a new column
        """
        dataset = db.session.query(SqlaTable).filter_by(table_name="students").first()
        column = dataset.columns[0]
        new_column = column.to_sl_column()

        # it should use the same uuid
        assert column.uuid == new_column.uuid