Implement ActivityPub Followers/Following/Outbox

3 files changed, 58 insertions, 6 deletions

diff --git a/src/remote/activitypub/renderer/follow-user.ts b/src/remote/activitypub/renderer/follow-user.ts
new file mode 100644
index 0000000000..9a488d392b
--- /dev/null
+++ b/src/remote/activitypub/renderer/follow-user.ts
@@ -0,0 +1,16 @@
+import config from '../../../config';
+import * as mongo from 'mongodb';
+import User, { isLocalUser } from '../../../models/user';
+
+/**
+ * Convert (local|remote)(Follower|Followee)ID to URL
+ * @param id Follower|Followee ID
+ */
+export default async function renderFollowUser(id: mongo.ObjectID): Promise<any> {
+
+	const user = await User.findOne({
+		_id: id
+	});
+
+	return isLocalUser(user) ? `${config.url}/users/${user._id}` : user.uri;
+}
diff --git a/src/remote/activitypub/renderer/ordered-collection-page.ts b/src/remote/activitypub/renderer/ordered-collection-page.ts
new file mode 100644
index 0000000000..83af07870e
--- /dev/null
+++ b/src/remote/activitypub/renderer/ordered-collection-page.ts
@@ -0,0 +1,23 @@
+/**
+ * Render OrderedCollectionPage
+ * @param id URL of self
+ * @param totalItems Number of total items
+ * @param orderedItems Items
+ * @param partOf URL of base
+ * @param prev URL of prev page (optional)
+ * @param next URL of next page (optional)
+ */
+export default function(id: string, totalItems: any, orderedItems: any, partOf: string, prev: string, next: string) {
+	const page = {
+		id,
+		partOf,
+		type: 'OrderedCollectionPage',
+		totalItems,
+		orderedItems
+	} as any;
+
+	if (prev) page.prev = prev;
+	if (next) page.next = next;
+
+	return page;
+}
diff --git a/src/remote/activitypub/renderer/ordered-collection.ts b/src/remote/activitypub/renderer/ordered-collection.ts
index 9d543b1e1b..3c448cf873 100644
--- a/src/remote/activitypub/renderer/ordered-collection.ts
+++ b/src/remote/activitypub/renderer/ordered-collection.ts
@@ -1,6 +1,19 @@
-export default (id: string, totalItems: any, orderedItems: any) => ({
-	id,
-	type: 'OrderedCollection',
-	totalItems,
-	orderedItems
-});
+/**
+ * Render OrderedCollection
+ * @param id URL of self
+ * @param totalItems Total number of items
+ * @param first URL of first page (optional)
+ * @param last URL of last page (optional)
+ */
+export default function(id: string, totalItems: any, first: string, last: string) {
+	const page: any = {
+		id,
+		type: 'OrderedCollection',
+		totalItems,
+	};
+
+	if (first) page.first = first;
+	if (last) page.last = last;
+
+	return page;
+}