content: # Copyright Contributors to the Amundsen project.
  # SPDX-License-Identifier: Apache-2.0
  
  import json
  from http import HTTPStatus
  from typing import Iterable, Mapping, Union
  
  from amundsen_common.entity.resource_type import ResourceType
  from amundsen_common.models.lineage import LineageSchema
  from flasgger import swag_from
  from flask import request
  from flask_restful import Resource, reqparse
  
  from metadata_service.api.badge import BadgeCommon
  from metadata_service.exception import NotFoundException
  from metadata_service.proxy import get_proxy_client
  
  
  class ColumnLineageAPI(Resource):
      """
      ColumnLineageAPI supports GET operation to get column lineage
      """
      def __init__(self) -> None:
          self.client = get_proxy_client()
          self.parser = reqparse.RequestParser()
          self.parser.add_argument('direction', type=str, required=False, default="both")
          self.parser.add_argument('depth', type=int, required=False, default=1)
          super(ColumnLineageAPI, self).__init__()
  
      @swag_from('swagger_doc/column/lineage_get.yml')
      def get(self, table_uri: str, column_name: str) -> Iterable[Union[Mapping, int, None]]:
          args = self.parser.parse_args()
          direction = args.get('direction')
          depth = args.get('depth')
  
          try:
              lineage = self.client.get_lineage(id=f"{table_uri}/{column_name}",
                                                resource_type=ResourceType.Column,
                                                direction=direction,
                                                depth=depth)
              schema = LineageSchema()
              return schema.dump(lineage), HTTPStatus.OK
          except Exception as e:
              return {'message': f'Exception raised when getting lineage: {e}'}, HTTPStatus.NOT_FOUND
  
  
  class ColumnDescriptionAPI(Resource):
      """
      ColumnDescriptionAPI supports PUT and GET operations to upsert column description
      """
  
      def __init__(self) -> None:
          self.client = get_proxy_client()
          super(ColumnDescriptionAPI, self).__init__()
  
      @swag_from('swagger_doc/column/description_put.yml')
      def put(self,
              table_uri: str,
              column_name: str) -> Iterable[Union[dict, tuple, int, None]]:
          """
          Updates column description (passed as a request body)
          :param table_uri:
          :param column_name:
          :return:
          """
          try:
              description = json.loads(request.data).get('description')
              self.client.put_column_description(table_uri=table_uri,
                                                 column_name=column_name,
                                                 description=description)
              return None, HTTPStatus.OK
  
          except NotFoundException:
              msg = 'table_uri {} with column {} does not exist'.format(table_uri, column_name)
              return {'message': msg}, HTTPStatus.NOT_FOUND
  
      @swag_from('swagger_doc/column/description_get.yml')
      def get(self, table_uri: str, column_name: str) -> Union[tuple, int, None]:
          """
          Gets column descriptions in Neo4j
          """
          try:
              description = self.client.get_column_description(table_uri=table_uri,
                                                               column_name=column_name)
  
              return {'description': description}, HTTPStatus.OK
  
          except NotFoundException:
              msg = 'table_uri {} with column {} does not exist'.format(table_uri, column_name)
              return {'message': msg}, HTTPStatus.NOT_FOUND
  
          except Exception:
              return {'message': 'Internal server error!'}, HTTPStatus.INTERNAL_SERVER_ERROR
  
  
  class ColumnBadgeAPI(Resource):
      def __init__(self) -> None:
          self.client = get_proxy_client()
          self.parser = reqparse.RequestParser()
          self.parser.add_argument('category', type=str, required=True)
          super(ColumnBadgeAPI, self).__init__()
  
          self._badge_common = BadgeCommon(client=self.client)
  
      @swag_from('swagger_doc/column/badge_put.yml')
      def put(self, table_uri: str, badge: str, column_name: str) -> Iterable[Union[Mapping, int, None]]:
          args = self.parser.parse_args()
          category = args.get('category', '')
  
          return self._badge_common.put(id=f"{table_uri}/{column_name}",
                                        resource_type=ResourceType.Column,
                                        badge_name=badge,
                                        category=category)
  
      @swag_from('swagger_doc/column/badge_delete.yml')
      def delete(self, table_uri: str, badge: str, column_name: str) -> Iterable[Union[Mapping, int, None]]:
          args = self.parser.parse_args()
          category = args.get('category', '')
  
          return self._badge_common.delete(id=f"{table_uri}/{column_name}",
                                           resource_type=ResourceType.Column,
                                           badge_name=badge,
                                           category=category)
  