Add new capability

Signed-off-by: Joas Schilling <coding@schilljs.com>

docs/capabilities.md

@@ -91,3 +91,4 @@ title: Capabilities
 * `chat-unread` - Whether the API to mark a conversation as unread is available
 * `reactions` - Api reactions to chat message
 * `rich-object-list-media` - When the API to get the chat messages for shared media is available
+* `rich-object-delete` - When the API allows to delete chat messages which are file or rich object shares

docs/chat.md

@@ -208,7 +208,7 @@ See [OCP\RichObjectStrings\Definitions](https://github.com/nextcloud/server/blob
 
 ## Deleting a chat message
 
-* Required capability: `delete-messages`
+* Required capability: `delete-messages` - `rich-object-delete` indicates if shared objects can be deleted from the chat
 * Method: `DELETE`
 * Endpoint: `/chat/{token}/{messageId}`
 

lib/Capabilities.php

@@ -105,6 +105,7 @@ class Capabilities implements IPublicCapability {
 				'notification-calls',
 				'conversation-permissions',
 				'rich-object-list-media',
+				'rich-object-delete',
 			],
 			'config' => [
 				'attachments' => [

tests/php/CapabilitiesTest.php

@@ -104,6 +104,7 @@ class CapabilitiesTest extends TestCase {
 			'notification-calls',
 			'conversation-permissions',
 			'rich-object-list-media',
+			'rich-object-delete',
 			'reactions',
 		];
 	}