User blocking (Following part) (#3035)

* block wip

* UndoBlock

* UnBlock

* wip

* follow

* UI

* fix

src/server/api/endpoints/blocking/delete.ts

@@ -0,0 +1,75 @@
+import $ from 'cafy'; import ID from '../../../../misc/cafy-id';
+const ms = require('ms');
+import User, { pack, ILocalUser } from '../../../../models/user';
+import Blocking from '../../../../models/blocking';
+import deleteBlocking from '../../../../services/blocking/delete';
+import getParams from '../../get-params';
+
+export const meta = {
+	stability: 'stable',
+
+	desc: {
+		'ja-JP': '指定したユーザーのブロックを解除します。',
+		'en-US': 'Unblock a user.'
+	},
+
+	limit: {
+		duration: ms('1hour'),
+		max: 100
+	},
+
+	requireCredential: true,
+
+	kind: 'following-write',
+
+	params: {
+		userId: $.type(ID).note({
+			desc: {
+				'ja-JP': '対象のユーザーのID',
+				'en-US': 'Target user ID'
+			}
+		})
+	}
+};
+
+export default (params: any, user: ILocalUser) => new Promise(async (res, rej) => {
+	const [ps, psErr] = getParams(meta, params);
+	if (psErr) return rej(psErr);
+
+	const blocker = user;
+
+	// Check if the blockee is yourself
+	if (user._id.equals(ps.userId)) {
+		return rej('blockee is yourself');
+	}
+
+	// Get blockee
+	const blockee = await User.findOne({
+		_id: ps.userId
+	}, {
+		fields: {
+			data: false,
+			'profile': false
+		}
+	});
+
+	if (blockee === null) {
+		return rej('user not found');
+	}
+
+	// Check not blocking
+	const exist = await Blocking.findOne({
+		blockerId: blocker._id,
+		blockeeId: blockee._id
+	});
+
+	if (exist === null) {
+		return rej('already not blocking');
+	}
+
+	// Delete blocking
+	await deleteBlocking(blocker, blockee);
+
+	// Send response
+	res(await pack(blockee._id, user));
+});