BP_REST_Activity_Endpoint::update_item( WP_REST_Request $request )

	public function update_item( $request ) {
		$request->set_param( 'context', 'edit' );
		$activity_object = $this->prepare_item_for_database( $request );

		if (
			(
				empty( $activity_object->content )
				&& empty( bp_activity_get_meta( $activity_object->id, 'bp_media_ids', true ) )
				&& empty( bp_activity_get_meta( $activity_object->id, '_gif_data', true ) )
			) && true === $this->bp_rest_activity_content_validate( $request )
		) {
			return new WP_Error(
				'bp_rest_update_activity_empty_content',
				__( 'Please, enter some content.', 'buddyboss' ),
				array(
					'status' => 400,
				)
			);
		}

		$activity_id = bp_activity_add( $activity_object );

		if ( ! is_numeric( $activity_id ) ) {
			return new WP_Error(
				'bp_rest_user_cannot_update_activity',
				__( 'Cannot update existing activity.', 'buddyboss' ),
				array(
					'status' => 500,
				)
			);
		}

		$activity      = $this->get_activity_object( $activity_id );
		$fields_update = $this->update_additional_fields_for_object( $activity, $request );

		if ( is_wp_error( $fields_update ) ) {
			return $fields_update;
		}

		if ( function_exists( 'bp_document_update_activity_privacy' ) ) {
			// Update privacy for the documents which are uploaded in root of the documents.
			bp_document_update_activity_privacy( $activity->id, $activity->privacy );
		}

		if ( function_exists( 'bp_document_update_activity_privacy' ) ) {
			// Update privacy for the media which are uploaded in the activity.
			bp_media_update_activity_privacy( $activity->id, $activity->privacy );
		}

		$retval = $this->prepare_response_for_collection(
			$this->prepare_item_for_response( $activity, $request )
		);

		$response = rest_ensure_response( $retval );

		/**
		 * Fires after an activity is updated via the REST API.
		 *
		 * @param BP_Activity_Activity $activity The updated activity.
		 * @param WP_REST_Response     $response The response data.
		 * @param WP_REST_Request      $request  The request sent to the API.
		 *
		 * @since 0.1.0
		 */
		do_action( 'bp_rest_activity_update_item', $activity, $response, $request );

		return $response;
	}