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# 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
#
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import logging
import uuid
from typing import Union

from superset import db
from superset.connectors.sqla.models import SqlaTable
from superset.daos.base import BaseDAO
from superset.daos.exceptions import (
    DatasourceNotFound,
    DatasourceTypeNotSupportedError,
    DatasourceValueIsIncorrect,
)
from superset.models.sql_lab import Query, SavedQuery
from superset.utils.core import DatasourceType

logger = logging.getLogger(__name__)

Datasource = Union[SqlaTable, Query, SavedQuery]


class DatasourceDAO(BaseDAO[Datasource]):
    sources: dict[Union[DatasourceType, str], type[Datasource]] = {
        DatasourceType.TABLE: SqlaTable,
        DatasourceType.QUERY: Query,
        DatasourceType.SAVEDQUERY: SavedQuery,
    }

    @classmethod
    def get_datasource(
        cls,
        datasource_type: Union[DatasourceType, str],
        database_id_or_uuid: int | str,
    ) -> Datasource:
        if datasource_type not in cls.sources:
            raise DatasourceTypeNotSupportedError()

        model = cls.sources[datasource_type]

        if str(database_id_or_uuid).isdigit():
            filter = model.id == int(database_id_or_uuid)
        else:
            try:
                uuid.UUID(str(database_id_or_uuid))  # uuid validation
                filter = model.uuid == database_id_or_uuid
            except ValueError as err:
                logger.warning(
                    "database_id_or_uuid %s isn't valid uuid", database_id_or_uuid
                )
                raise DatasourceValueIsIncorrect() from err

        datasource = (
            db.session.query(cls.sources[datasource_type]).filter(filter).one_or_none()
        )

        if not datasource:
            logger.warning(
                "Datasource not found datasource_type: %s, database_id_or_uuid: %s",
                datasource_type,
                database_id_or_uuid,
            )
            raise DatasourceNotFound()

        return datasource