text: # Licensed to the Apache Software Foundation (ASF) under one
  # or more contributor license agreements.  See the NOTICE file
  # 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
  # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  # KIND, either express or implied.  See the License for the
  # specific language governing permissions and limitations
  # under the License.
  
  from typing import Dict, Optional, Sequence, Union
  
  from airflow.exceptions import AirflowException
  from airflow.models import BaseOperator
  from airflow.providers.google.firebase.hooks.firestore import CloudFirestoreHook
  from airflow.utils.decorators import apply_defaults
  
  
  class CloudFirestoreExportDatabaseOperator(BaseOperator):
      """
      Exports a copy of all or a subset of documents from Google Cloud Firestore to another storage system,
      such as Google Cloud Storage.
  
      .. seealso::
          For more information on how to use this operator, take a look at the guide:
          :ref:`howto/operator:CloudFirestoreExportDatabaseOperator`
  
      :param database_id: The Database ID.
      :type database_id: str
      :param body: The request body.
          See:
          https://firebase.google.com/docs/firestore/reference/rest/v1beta1/projects.databases/exportDocuments
      :type body: dict
      :param project_id: ID of the Google Cloud project if None then
          default project_id is used.
      :type project_id: str
      :param gcp_conn_id: The connection ID to use to connect to Google Cloud.
      :type gcp_conn_id: str
      :param api_version: API version used (for example v1 or v1beta1).
      :type api_version: str
      :param impersonation_chain: Optional service account to impersonate using short-term
          credentials, or chained list of accounts required to get the access_token
          of the last account in the list, which will be impersonated in the request.
          If set as a string, the account must grant the originating account
          the Service Account Token Creator IAM role.
          If set as a sequence, the identities from the list must grant
          Service Account Token Creator IAM role to the directly preceding identity, with first
          account from the list granting this role to the originating account (templated).
      :type impersonation_chain: Union[str, Sequence[str]]
      """
  
      template_fields = (
          "body",
          "gcp_conn_id",
          "api_version",
          "impersonation_chain",
      )
  
      @apply_defaults
      def __init__(
          self,
          *,
          body: Dict,
          database_id: str = "(default)",
          project_id: Optional[str] = None,
          gcp_conn_id: str = "google_cloud_default",
          api_version: str = "v1",
          impersonation_chain: Optional[Union[str, Sequence[str]]] = None,
          **kwargs,
      ) -> None:
          super().__init__(**kwargs)
          self.database_id = database_id
          self.body = body
          self.project_id = project_id
          self.gcp_conn_id = gcp_conn_id
          self.api_version = api_version
          self._validate_inputs()
          self.impersonation_chain = impersonation_chain
  
      def _validate_inputs(self):
          if not self.body:
              raise AirflowException("The required parameter 'body' is missing")
  
      def execute(self, context):
          hook = CloudFirestoreHook(
              gcp_conn_id=self.gcp_conn_id,
              api_version=self.api_version,
              impersonation_chain=self.impersonation_chain,
          )
          return hook.export_documents(database_id=self.database_id, body=self.body, project_id=self.project_id)
  