def post():
     """POST method handler, creates new devices for request."""
     dereg_id = request.form.to_dict().get('dereg_id', None)
     if not dereg_id or not dereg_id.isdigit() or not DeRegDetails.exists(
             dereg_id):
         return Response(app.json_encoder.encode(DEREG_NOT_FOUND_MSG),
                         status=CODES.get("UNPROCESSABLE_ENTITY"),
                         mimetype=MIME_TYPES.get("APPLICATION_JSON"))
     try:
         schema_request = DeRegRequestSchema()
         device_schema = DeRegDeviceSchema()
         dereg = DeRegDetails.get_by_id(dereg_id)
         args = request.form.to_dict()
         args = DeRegDevice.curate_args(args, dereg)
         validation_errors = schema_request.validate(args)
         if validation_errors:
             return Response(app.json_encoder.encode(validation_errors),
                             status=CODES.get("UNPROCESSABLE_ENTITY"),
                             mimetype=MIME_TYPES.get("APPLICATION_JSON"))
         imei_tac_map = Utilities.extract_imeis_tac_map(args, dereg)
         imeis_list = Utilities.extract_imeis(imei_tac_map)
         not_registered_imeis = Utilities.get_not_registered_imeis(
             imeis_list)
         if not_registered_imeis:
             error = {'not_registered_imeis': not_registered_imeis}
             return Response(json.dumps(error),
                             status=CODES.get("UNPROCESSABLE_ENTITY"),
                             mimetype=MIME_TYPES.get("APPLICATION_JSON"))
         else:
             old_devices = list(map(lambda x: x.id, dereg.devices))
             created = DeRegDevice.bulk_create(args, dereg)
             device_id_tac_map = Utilities.get_id_tac_map(created)
             devices = device_schema.dump(created, many=True)
             dereg.update_status('Awaiting Documents')
             db.session.commit()
             DeRegDevice.bulk_insert_imeis(device_id_tac_map, imei_tac_map,
                                           old_devices, imeis_list, dereg)
             response = {'devices': devices.data, 'dreg_id': dereg.id}
             return Response(json.dumps(response),
                             status=CODES.get("OK"),
                             mimetype=MIME_TYPES.get("APPLICATION_JSON"))
     except Exception as e:  # pragma: no cover
         app.logger.exception(e)
         error = {
             'message':
             [_('Failed to retrieve response, please try later')]
         }
         return Response(app.json_encoder.encode(error),
                         status=CODES.get('INTERNAL_SERVER_ERROR'),
                         mimetype=MIME_TYPES.get('APPLICATION_JSON'))
     finally:
         db.session.close()
 def put():
     """PUT method handler, updates devices of the request."""
     dereg_id = request.form.to_dict().get('dereg_id', None)
     if not dereg_id or not dereg_id.isdigit() or not DeRegDetails.exists(
             dereg_id):
         return Response(app.json_encoder.encode(DEREG_NOT_FOUND_MSG),
                         status=CODES.get("UNPROCESSABLE_ENTITY"),
                         mimetype=MIME_TYPES.get("APPLICATION_JSON"))
     try:
         schema_request = DeRegRequestUpdateSchema()
         device_schema = DeRegDeviceSchema()
         dereg = DeRegDetails.get_by_id(dereg_id)
         args = request.form.to_dict()
         args = DeRegDevice.curate_args(args, dereg)
         validation_errors = schema_request.validate(args)
         if validation_errors:
             return Response(app.json_encoder.encode(validation_errors),
                             status=CODES.get("UNPROCESSABLE_ENTITY"),
                             mimetype=MIME_TYPES.get("APPLICATION_JSON"))
         imei_tac_map = Utilities.extract_imeis_tac_map(args, dereg)
         imeis_list = Utilities.extract_imeis(imei_tac_map)
         not_registered_imeis = Utilities.get_not_registered_imeis(
             imeis_list)
         if not_registered_imeis:
             error = {'not_registered_imeis': not_registered_imeis}
             return Response(json.dumps(error),
                             status=CODES.get("UNPROCESSABLE_ENTITY"),
                             mimetype=MIME_TYPES.get("APPLICATION_JSON"))
         else:
             # day_passed = (datetime.now() - dereg.updated_at) > timedelta(1)
             processing_failed = dereg.processing_status in [
                 Status.get_status_id('Failed'),
                 Status.get_status_id('New Request')
             ]
             report_failed = dereg.report_status == Status.get_status_id(
                 'Failed')
             # report_timeout = dereg.report_status == Status.get_status_id('Processing') and day_passed
             processing_required = processing_failed or report_failed
             if processing_required:
                 old_devices = list(map(lambda x: x.id, dereg.devices))
                 created = DeRegDevice.bulk_create(args, dereg)
                 device_id_tac_map = Utilities.get_id_tac_map(created)
                 devices = device_schema.dump(created, many=True)
                 db.session.commit()
                 DeRegDevice.bulk_insert_imeis(device_id_tac_map,
                                               imei_tac_map, old_devices,
                                               imeis_list, dereg)
                 response = {'devices': devices.data, 'dreg_id': dereg.id}
             else:
                 response = {'devices': [], 'dreg_id': dereg.id}
             return Response(json.dumps(response),
                             status=CODES.get("OK"),
                             mimetype=MIME_TYPES.get("APPLICATION_JSON"))
     except Exception as e:  # pragma: no cover
         app.logger.exception(e)
         error = {
             'message':
             [_('Failed to retrieve response, please try later')]
         }
         return Response(app.json_encoder.encode(error),
                         status=CODES.get('INTERNAL_SERVER_ERROR'),
                         mimetype=MIME_TYPES.get('APPLICATION_JSON'))
     finally:
         db.session.close()