wip

2 files changed, 61 insertions, 0 deletions

diff --git a/src/remote/activitypub/kernel/undo/follow.ts b/src/remote/activitypub/kernel/undo/follow.ts
new file mode 100644
index 0000000000..a85cb0305d
--- /dev/null
+++ b/src/remote/activitypub/kernel/undo/follow.ts
@@ -0,0 +1,24 @@
+import User, { IRemoteUser } from '../../../../models/user';
+import config from '../../../../config';
+import unfollow from '../../../../services/following/delete';
+import { IFollow } from '../../type';
+
+export default async (actor: IRemoteUser, activity: IFollow): Promise<void> => {
+	const id = typeof activity.object == 'string' ? activity.object : activity.object.id;
+
+	if (!id.startsWith(config.url + '/')) {
+		return null;
+	}
+
+	const followee = await User.findOne({ _id: id.split('/').pop() });
+
+	if (followee === null) {
+		throw new Error('followee not found');
+	}
+
+	if (followee.host != null) {
+		throw new Error('フォロー解除しようとしているユーザーはローカルユーザーではありません');
+	}
+
+	await unfollow(actor, followee, activity);
+};
diff --git a/src/remote/activitypub/kernel/undo/index.ts b/src/remote/activitypub/kernel/undo/index.ts
new file mode 100644
index 0000000000..71f547aeb9
--- /dev/null
+++ b/src/remote/activitypub/kernel/undo/index.ts
@@ -0,0 +1,37 @@
+import * as debug from 'debug';
+
+import { IRemoteUser } from '../../../../models/user';
+import { IUndo } from '../../type';
+import unfollow from './follow';
+import Resolver from '../../resolver';
+
+const log = debug('misskey:activitypub');
+
+export default async (actor: IRemoteUser, activity: IUndo): Promise<void> => {
+	if ('actor' in activity && actor.uri !== activity.actor) {
+		throw new Error('invalid actor');
+	}
+
+	const uri = activity.id || activity;
+
+	log(`Undo: ${uri}`);
+
+	const resolver = new Resolver();
+
+	let object;
+
+	try {
+		object = await resolver.resolve(activity.object);
+	} catch (e) {
+		log(`Resolution failed: ${e}`);
+		throw e;
+	}
+
+	switch (object.type) {
+		case 'Follow':
+			unfollow(actor, object);
+			break;
+	}
+
+	return null;
+};