1 files changed, 64 insertions, 0 deletions
diff --git a/src/services/following/delete.ts b/src/services/following/delete.ts
new file mode 100644
index 0000000000..364a4803b9
--- /dev/null
+++ b/src/services/following/delete.ts
@@ -0,0 +1,64 @@
+import User, { isLocalUser, isRemoteUser, pack as packUser, IUser } from '../../models/user';
+import Following from '../../models/following';
+import FollowingLog from '../../models/following-log';
+import FollowedLog from '../../models/followed-log';
+import event from '../../publishers/stream';
+import context from '../../remote/activitypub/renderer/context';
+import renderFollow from '../../remote/activitypub/renderer/follow';
+import renderUndo from '../../remote/activitypub/renderer/undo';
+import { deliver } from '../../queue';
+
+export default async function(follower: IUser, followee: IUser, activity?) {
+	const following = await Following.findOne({
+		followerId: follower._id,
+		followeeId: followee._id
+	});
+
+	if (following == null) {
+		console.warn('フォロー解除がリクエストされましたがフォローしていませんでした');
+		return;
+	}
+
+	Following.remove({
+		_id: following._id
+	});
+
+	//#region Decrement following count
+	User.update({ _id: follower._id }, {
+		$inc: {
+			followingCount: -1
+		}
+	});
+
+	FollowingLog.insert({
+		createdAt: following.createdAt,
+		userId: follower._id,
+		count: follower.followingCount - 1
+	});
+	//#endregion
+
+	//#region Decrement followers count
+	User.update({ _id: followee._id }, {
+		$inc: {
+			followersCount: -1
+		}
+	});
+	FollowedLog.insert({
+		createdAt: following.createdAt,
+		userId: followee._id,
+		count: followee.followersCount - 1
+	});
+	//#endregion
+
+	// Publish unfollow event
+	if (isLocalUser(follower)) {
+		packUser(followee, follower).then(packed => event(follower._id, 'unfollow', packed));
+	}
+
+	if (isLocalUser(follower) && isRemoteUser(followee)) {
+		const content = renderUndo(renderFollow(follower, followee));
+		content['@context'] = context;
+
+		deliver(follower, content, followee.account.inbox).save();
+	}
+}