From 8c8ff7d49aeed251c6af5018d5fa1cbcedc3117b Mon Sep 17 00:00:00 2001
From: syuilo <syuilotan@yahoo.co.jp>
Date: Thu, 25 Oct 2018 07:04:15 +0900
Subject: [PATCH] Implement featured note API

---
 src/models/note.ts                         | 13 ++++--
 src/server/api/endpoints/notes/featured.ts | 49 ++++++++++++++++++++++
 src/services/note/create.ts                |  3 +-
 src/services/note/reaction/create.ts       |  8 ++--
 4 files changed, 65 insertions(+), 8 deletions(-)
 create mode 100644 src/server/api/endpoints/notes/featured.ts

diff --git a/src/models/note.ts b/src/models/note.ts
index 6edf6ec31..c147b63f0 100644
--- a/src/models/note.ts
+++ b/src/models/note.ts
@@ -22,11 +22,11 @@ Note.createIndex('userId');
 Note.createIndex('mentions');
 Note.createIndex('visibleUserIds');
 Note.createIndex('tagsLower');
+Note.createIndex('_user.host');
 Note.createIndex('_files._id');
 Note.createIndex('_files.contentType');
-Note.createIndex({
-	createdAt: -1
-});
+Note.createIndex({ createdAt: -1 });
+Note.createIndex({ score: -1 }, { sparse: true });
 export default Note;
 
 export function isValidText(text: string): boolean {
@@ -85,8 +85,14 @@ export type INote = {
 		heading: number;
 		speed: number;
 	};
+
 	uri: string;
 
+	/**
+	 * 人気の投稿度合いを表すスコア
+	 */
+	score: number;
+
 	// 非正規化
 	_reply?: {
 		userId: mongo.ObjectID;
@@ -298,6 +304,7 @@ export const pack = async (
 	delete _note.prev;
 	delete _note.next;
 	delete _note.tagsLower;
+	delete _note.score;
 	delete _note._user;
 	delete _note._reply;
 	delete _note._renote;
diff --git a/src/server/api/endpoints/notes/featured.ts b/src/server/api/endpoints/notes/featured.ts
new file mode 100644
index 000000000..363170ead
--- /dev/null
+++ b/src/server/api/endpoints/notes/featured.ts
@@ -0,0 +1,49 @@
+import $ from 'cafy';
+import Note from '../../../../models/note';
+import { packMany } from '../../../../models/note';
+import { ILocalUser } from '../../../../models/user';
+import getParams from '../../get-params';
+
+export const meta = {
+	desc: {
+		'ja-JP': 'Featuredな投稿を取得します。',
+		'en-US': 'Get featured notes.'
+	},
+
+	requireCredential: false,
+
+	params: {
+		limit: $.num.optional.range(1, 30).note({
+			default: 10,
+			desc: {
+				'ja-JP': '最大数'
+			}
+		})
+	}
+};
+
+export default async (params: any, user: ILocalUser) => {
+	const [ps, psErr] = getParams(meta, params);
+	if (psErr) throw psErr;
+
+	const day = 1000 * 60 * 60 * 24;
+
+	const notes = await Note
+		.find({
+			createdAt: {
+				$gt: new Date(Date.now() - day)
+			},
+			deletedAt: null,
+			visibility: { $in: ['public', 'home'] }
+		}, {
+			limit: ps.limit,
+			sort: {
+				score: -1
+			},
+			hint: {
+				score: -1
+			}
+		});
+
+	return await packMany(notes, user);
+};
diff --git a/src/services/note/create.ts b/src/services/note/create.ts
index 96ffe9687..55e1d569a 100644
--- a/src/services/note/create.ts
+++ b/src/services/note/create.ts
@@ -314,7 +314,8 @@ async function renderActivity(data: Option, note: INote) {
 function incRenoteCount(renote: INote) {
 	Note.update({ _id: renote._id }, {
 		$inc: {
-			renoteCount: 1
+			renoteCount: 1,
+			score: 1
 		}
 	});
 }
diff --git a/src/services/note/reaction/create.ts b/src/services/note/reaction/create.ts
index edf648109..4a09cf535 100644
--- a/src/services/note/reaction/create.ts
+++ b/src/services/note/reaction/create.ts
@@ -36,12 +36,12 @@ export default async (user: IUser, note: INote, reaction: string) => new Promise
 
 	res();
 
-	const inc: {[key: string]: number} = {};
-	inc[`reactionCounts.${reaction}`] = 1;
-
 	// Increment reactions count
 	await Note.update({ _id: note._id }, {
-		$inc: inc
+		$inc: {
+			[`reactionCounts.${reaction}`]: 1,
+			score: 1
+		}
 	});
 
 	perUserReactionsChart.update(user, note);