feat: Update notification object to match the updated examples

src/server/notifications/Notification.ts

@@ -3,7 +3,7 @@ export const CONTEXT_NOTIFICATION = 'https://www.w3.org/ns/solid/notification/v1
 
 /**
  * The minimally expected fields for a Notification
- * as defined in https://solidproject.org/TR/notifications-protocol#notification-data-model.
+ * as defined in https://solidproject.org/TR/2022/notifications-protocol-20221231#data-model.
  */
 export interface Notification {
   '@context': [
@@ -12,11 +12,9 @@ export interface Notification {
     ...string[],
   ];
   id: string;
-  type: string[];
-  object: {
-    id: string;
-    type: string[];
-  };
+  type: string;
+  object: string;
   state?: string;
+  target?: string | string[];
   published: string;
 }

src/server/notifications/generate/ActivityNotificationGenerator.ts

@@ -1,7 +1,7 @@
 import { getETag } from '../../../storage/Conditions';
 import type { ResourceStore } from '../../../storage/ResourceStore';
 import { NotImplementedHttpError } from '../../../util/errors/NotImplementedHttpError';
-import { AS, RDF } from '../../../util/Vocabularies';
+import { AS } from '../../../util/Vocabularies';
 import type { Notification } from '../Notification';
 import { CONTEXT_ACTIVITYSTREAMS, CONTEXT_NOTIFICATION } from '../Notification';
 import type { NotificationHandlerInput } from '../NotificationHandler';
@@ -37,11 +37,8 @@ export class ActivityNotificationGenerator extends NotificationGenerator {
         CONTEXT_NOTIFICATION,
       ],
       id: `urn:${Date.now()}:${topic.path}`,
-      type: [ activity!.value.slice(AS.namespace.length) ],
-      object: {
-        id: topic.path,
-        type: representation.metadata.getAll(RDF.terms.type).map((term): string => term.value),
-      },
+      type: activity!.value.slice(AS.namespace.length),
+      object: topic.path,
       state,
       published: new Date().toISOString(),
     };

src/server/notifications/generate/DeleteNotificationGenerator.ts

@@ -24,11 +24,8 @@ export class DeleteNotificationGenerator extends NotificationGenerator {
         CONTEXT_NOTIFICATION,
       ],
       id: `urn:${Date.now()}:${topic.path}`,
-      type: [ 'Delete' ],
-      object: {
-        id: topic.path,
-        type: [],
-      },
+      type: 'Delete',
+      object: topic.path,
       published: new Date().toISOString(),
     };
   }