From 5aa5e5cc7074003cec3417636ea1972b6d88150d Mon Sep 17 00:00:00 2001
From: otofune <otofune@gmail.com>
Date: Sun, 5 Nov 2017 22:22:49 +0900
Subject: [PATCH] serializers - user: run promises in parallel as possible

---
 src/api/serializers/post.ts |  2 +-
 src/api/serializers/user.ts | 40 +++++++++++++++++++++----------------
 2 files changed, 24 insertions(+), 18 deletions(-)

diff --git a/src/api/serializers/post.ts b/src/api/serializers/post.ts
index 352932acf..99e9bb667 100644
--- a/src/api/serializers/post.ts
+++ b/src/api/serializers/post.ts
@@ -12,7 +12,7 @@ import serializeChannel from './channel';
 import serializeUser from './user';
 import serializeDriveFile from './drive-file';
 import parse from '../common/text';
-import rap from '@prezzemolo/rap'
+import rap from '@prezzemolo/rap';
 
 /**
  * Serialize a post
diff --git a/src/api/serializers/user.ts b/src/api/serializers/user.ts
index 3deff2d00..3527921de 100644
--- a/src/api/serializers/user.ts
+++ b/src/api/serializers/user.ts
@@ -8,6 +8,7 @@ import serializePost from './post';
 import Following from '../models/following';
 import getFriends from '../common/get-friends';
 import config from '../../conf';
+import rap from '@prezzemolo/rap';
 
 /**
  * Serialize a user
@@ -104,26 +105,30 @@ export default (
 
 	if (meId && !meId.equals(_user.id)) {
 		// If the user is following
-		const follow = await Following.findOne({
-			follower_id: meId,
-			followee_id: _user.id,
-			deleted_at: { $exists: false }
-		});
-		_user.is_following = follow !== null;
+		_user.is_following = (async () => {
+			const follow = await Following.findOne({
+				follower_id: meId,
+				followee_id: _user.id,
+				deleted_at: { $exists: false }
+			});
+			return follow !== null;
+		})()
 
 		// If the user is followed
-		const follow2 = await Following.findOne({
-			follower_id: _user.id,
-			followee_id: meId,
-			deleted_at: { $exists: false }
-		});
-		_user.is_followed = follow2 !== null;
+		_user.is_followed = (async () => {
+			const follow2 = await Following.findOne({
+				follower_id: _user.id,
+				followee_id: meId,
+				deleted_at: { $exists: false }
+			});
+			return follow2 !== null;
+		})()
 	}
 
 	if (opts.detail) {
 		if (_user.pinned_post_id) {
 			// Populate pinned post
-			_user.pinned_post = await serializePost(_user.pinned_post_id, meId, {
+			_user.pinned_post = serializePost(_user.pinned_post_id, meId, {
 				detail: true
 			});
 		}
@@ -132,23 +137,24 @@ export default (
 			const myFollowingIds = await getFriends(meId);
 
 			// Get following you know count
-			const followingYouKnowCount = await Following.count({
+			_user.following_you_know_count = Following.count({
 				followee_id: { $in: myFollowingIds },
 				follower_id: _user.id,
 				deleted_at: { $exists: false }
 			});
-			_user.following_you_know_count = followingYouKnowCount;
 
 			// Get followers you know count
-			const followersYouKnowCount = await Following.count({
+			_user.followers_you_know_count = Following.count({
 				followee_id: _user.id,
 				follower_id: { $in: myFollowingIds },
 				deleted_at: { $exists: false }
 			});
-			_user.followers_you_know_count = followersYouKnowCount;
 		}
 	}
 
+	// resolve promises in _user object
+	_user = await rap(_user)
+
 	resolve(_user);
 });
 /*