From 210cb57aa5d1c832708f0015ab1f23f70474beb5 Mon Sep 17 00:00:00 2001
From: Akihiko Odaki <nekomanma@pixiv.co.jp>
Date: Tue, 3 Apr 2018 17:50:52 +0900
Subject: Implement Delete activity

---
 src/remote/activitypub/act/delete/index.ts | 24 ++++++++++++++++++++++++
 src/remote/activitypub/act/delete/post.ts  | 10 ++++++++++
 src/remote/activitypub/act/index.ts        |  4 ++++
 3 files changed, 38 insertions(+)
 create mode 100644 src/remote/activitypub/act/delete/index.ts
 create mode 100644 src/remote/activitypub/act/delete/post.ts

(limited to 'src/remote')

diff --git a/src/remote/activitypub/act/delete/index.ts b/src/remote/activitypub/act/delete/index.ts
new file mode 100644
index 0000000000..eabf9a0436
--- /dev/null
+++ b/src/remote/activitypub/act/delete/index.ts
@@ -0,0 +1,24 @@
+import create from '../../create';
+import deletePost from './post';
+
+export default async (resolver, actor, activity) => {
+	if ('actor' in activity && actor.account.uri !== activity.actor) {
+		throw new Error();
+	}
+
+	const results = await create(resolver, actor, activity.object);
+
+	await Promise.all(results.map(async promisedResult => {
+		const result = await promisedResult;
+		if (result === null) {
+			return;
+		}
+
+		switch (result.object.$ref) {
+		case 'posts':
+			await deletePost(result.object);
+		}
+	}));
+
+	return null;
+};
diff --git a/src/remote/activitypub/act/delete/post.ts b/src/remote/activitypub/act/delete/post.ts
new file mode 100644
index 0000000000..1b748afe82
--- /dev/null
+++ b/src/remote/activitypub/act/delete/post.ts
@@ -0,0 +1,10 @@
+import Post from '../../../../models/post';
+import queue from '../../../../queue';
+
+export default ({ $id }) => Promise.all([
+	Post.findOneAndDelete({ _id: $id }),
+	new Promise((resolve, reject) => queue.create('db', {
+		type: 'deletePostDependents',
+		id: $id
+	}).delay(65536).save(error => error ? reject(error) : resolve()))
+]);
diff --git a/src/remote/activitypub/act/index.ts b/src/remote/activitypub/act/index.ts
index 030f1cf25b..d282e12885 100644
--- a/src/remote/activitypub/act/index.ts
+++ b/src/remote/activitypub/act/index.ts
@@ -1,4 +1,5 @@
 import create from './create';
+import performDeleteActivity from './delete';
 import follow from './follow';
 import undo from './undo';
 import createObject from '../create';
@@ -19,6 +20,9 @@ export default async (parentResolver: Resolver, actor, value, distribute?: boole
 		case 'Create':
 			return create(resolver, actor, object, distribute);
 
+		case 'Delete':
+			return performDeleteActivity(resolver, actor, object);
+
 		case 'Follow':
 			return follow(resolver, actor, object, distribute);
 
-- 
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