Allow to undo Create activity

src/remote/activitypub/delete/index.ts

@@ -0,0 +1,10 @@
+import deletePost from './post';
+
+export default async ({ object }) => {
+	switch (object.$ref) {
+	case 'posts':
+		return deletePost(object);
+	}
+
+	return null;
+};

src/remote/activitypub/delete/post.ts

@@ -0,0 +1,13 @@
+import Post from '../../../models/post';
+import queue from '../../../queue';
+
+export default async ({ $id }) => {
+	const promisedDeletion = Post.findOneAndDelete({ _id: $id });
+
+	await new Promise((resolve, reject) => queue.create('db', {
+		type: 'deletePostDependents',
+		id: $id
+	}).delay(65536).save(error => error ? reject(error) : resolve()));
+
+	return promisedDeletion;
+};