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# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
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# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
import logging
from typing import Optional

from flask_appbuilder.models.sqla import Model
from flask_appbuilder.security.sqla.models import User

from superset.commands.base import BaseCommand
from superset.connectors.sqla.models import TableColumn
from superset.dao.exceptions import DAODeleteFailedError
from superset.datasets.columns.commands.exceptions import (
    DatasetColumnDeleteFailedError,
    DatasetColumnForbiddenError,
    DatasetColumnNotFoundError,
)
from superset.datasets.dao import DatasetDAO
from superset.exceptions import SupersetSecurityException
from superset.views.base import check_ownership

logger = logging.getLogger(__name__)


class DeleteDatasetColumnCommand(BaseCommand):
    def __init__(self, user: User, dataset_id: int, model_id: int):
        self._actor = user
        self._dataset_id = dataset_id
        self._model_id = model_id
        self._model: Optional[TableColumn] = None

    def run(self) -> Model:
        self.validate()
        try:
            if not self._model:
                raise DatasetColumnNotFoundError()
            column = DatasetDAO.delete_column(self._model)
            return column
        except DAODeleteFailedError as ex:
            logger.exception(ex.exception)
            raise DatasetColumnDeleteFailedError() from ex

    def validate(self) -> None:
        # Validate/populate model exists
        self._model = DatasetDAO.find_dataset_column(self._dataset_id, self._model_id)
        if not self._model:
            raise DatasetColumnNotFoundError()
        # Check ownership
        try:
            check_ownership(self._model)
        except SupersetSecurityException as ex:
            raise DatasetColumnForbiddenError() from ex