From 69ab594ac73a8b977152c67d72ff6eabad6e624c Mon Sep 17 00:00:00 2001
From: syuilo <syuilotan@yahoo.co.jp>
Date: Fri, 8 Sep 2017 17:24:11 +0900
Subject: [PATCH] Refactoring

---
 src/api/serializers/post.ts | 38 ++++++++++++++++++++-------------
 src/api/serializers/user.ts | 42 ++++++++++++++++++-------------------
 2 files changed, 45 insertions(+), 35 deletions(-)

diff --git a/src/api/serializers/post.ts b/src/api/serializers/post.ts
index 13773bda9..86016d669 100644
--- a/src/api/serializers/post.ts
+++ b/src/api/serializers/post.ts
@@ -3,8 +3,9 @@
  */
 import * as mongo from 'mongodb';
 import deepcopy = require('deepcopy');
-import Post from '../models/post';
+import { default as Post, IPost } from '../models/post';
 import Reaction from '../models/post-reaction';
+import { IUser } from '../models/user';
 import Vote from '../models/poll-vote';
 import serializeApp from './app';
 import serializeUser from './user';
@@ -14,14 +15,14 @@ import parse from '../common/text';
 /**
  * Serialize a post
  *
- * @param {any} post
- * @param {any} me?
- * @param {any} options?
- * @return {Promise<any>}
+ * @param post target
+ * @param me? serializee
+ * @param options? serialize options
+ * @return response
  */
 const self = (
-	post: any,
-	me?: any,
+	post: string | mongo.ObjectID | IPost,
+	me?: string | mongo.ObjectID | IUser,
 	options?: {
 		detail: boolean
 	}
@@ -30,6 +31,15 @@ const self = (
 		detail: true,
 	};
 
+	// Me
+	const meId: mongo.ObjectID = me
+	? mongo.ObjectID.prototype.isPrototypeOf(me)
+		? me as mongo.ObjectID
+		: typeof me === 'string'
+			? new mongo.ObjectID(me)
+			: (me as IUser)._id
+	: null;
+
 	let _post: any;
 
 	// Populate the post if 'post' is ID
@@ -59,7 +69,7 @@ const self = (
 	}
 
 	// Populate user
-	_post.user = await serializeUser(_post.user_id, me);
+	_post.user = await serializeUser(_post.user_id, meId);
 
 	// Populate app
 	if (_post.app_id) {
@@ -109,23 +119,23 @@ const self = (
 
 		if (_post.reply_to_id) {
 			// Populate reply to post
-			_post.reply_to = await self(_post.reply_to_id, me, {
+			_post.reply_to = await self(_post.reply_to_id, meId, {
 				detail: false
 			});
 		}
 
 		if (_post.repost_id) {
 			// Populate repost
-			_post.repost = await self(_post.repost_id, me, {
+			_post.repost = await self(_post.repost_id, meId, {
 				detail: _post.text == null
 			});
 		}
 
 		// Poll
-		if (me && _post.poll) {
+		if (meId && _post.poll) {
 			const vote = await Vote
 				.findOne({
-					user_id: me._id,
+					user_id: meId,
 					post_id: id
 				});
 
@@ -135,10 +145,10 @@ const self = (
 		}
 
 		// Fetch my reaction
-		if (me) {
+		if (meId) {
 			const reaction = await Reaction
 				.findOne({
-					user_id: me._id,
+					user_id: meId,
 					post_id: id,
 					deleted_at: { $exists: false }
 				});
diff --git a/src/api/serializers/user.ts b/src/api/serializers/user.ts
index c9189d903..57599fe85 100644
--- a/src/api/serializers/user.ts
+++ b/src/api/serializers/user.ts
@@ -3,7 +3,7 @@
  */
 import * as mongo from 'mongodb';
 import deepcopy = require('deepcopy');
-import User from '../models/user';
+import { default as User, IUser } from '../models/user';
 import serializePost from './post';
 import Following from '../models/following';
 import getFriends from '../common/get-friends';
@@ -12,14 +12,14 @@ import config from '../../conf';
 /**
  * Serialize a user
  *
- * @param {any} user
- * @param {any} me?
- * @param {any} options?
- * @return {Promise<any>}
+ * @param user target
+ * @param me? serializee
+ * @param options? serialize options
+ * @return response
  */
 export default (
-	user: any,
-	me?: any,
+	user: string | mongo.ObjectID | IUser,
+	me?: string | mongo.ObjectID | IUser,
 	options?: {
 		detail?: boolean,
 		includeSecrets?: boolean
@@ -54,13 +54,13 @@ export default (
 	}
 
 	// Me
-	if (me && !mongo.ObjectID.prototype.isPrototypeOf(me)) {
-		if (typeof me === 'string') {
-			me = new mongo.ObjectID(me);
-		} else {
-			me = me._id;
-		}
-	}
+	const meId: mongo.ObjectID = me
+		? mongo.ObjectID.prototype.isPrototypeOf(me)
+			? me as mongo.ObjectID
+			: typeof me === 'string'
+				? new mongo.ObjectID(me)
+				: (me as IUser)._id
+		: null;
 
 	// Rename _id to id
 	_user.id = _user._id;
@@ -92,17 +92,17 @@ export default (
 		? `${config.drive_url}/${_user.banner_id}`
 		: null;
 
-	if (!me || !me.equals(_user.id) || !opts.detail) {
+	if (!meId || !meId.equals(_user.id) || !opts.detail) {
 		delete _user.avatar_id;
 		delete _user.banner_id;
 
 		delete _user.drive_capacity;
 	}
 
-	if (me && !me.equals(_user.id)) {
+	if (meId && !meId.equals(_user.id)) {
 		// If the user is following
 		const follow = await Following.findOne({
-			follower_id: me,
+			follower_id: meId,
 			followee_id: _user.id,
 			deleted_at: { $exists: false }
 		});
@@ -111,7 +111,7 @@ export default (
 		// If the user is followed
 		const follow2 = await Following.findOne({
 			follower_id: _user.id,
-			followee_id: me,
+			followee_id: meId,
 			deleted_at: { $exists: false }
 		});
 		_user.is_followed = follow2 !== null;
@@ -119,13 +119,13 @@ export default (
 
 	if (opts.detail) {
 		if (_user.pinned_post_id) {
-			_user.pinned_post = await serializePost(_user.pinned_post_id, me, {
+			_user.pinned_post = await serializePost(_user.pinned_post_id, meId, {
 				detail: true
 			});
 		}
 
-		if (me && !me.equals(_user.id)) {
-			const myFollowingIds = await getFriends(me);
+		if (meId && !meId.equals(_user.id)) {
+			const myFollowingIds = await getFriends(meId);
 
 			// Get following you know count
 			const followingYouKnowCount = await Following.count({