From 48aa7c2a7b51dc09219820965d50096962941c98 Mon Sep 17 00:00:00 2001
From: Aya Morisawa <AyaMorisawa4869@gmail.com>
Date: Wed, 26 Dec 2018 23:05:47 +0900
Subject: [PATCH] Make reactions removable

Co-authored-by: syuilo <syuilotan@yahoo.co.jp>

Resolve #367, resolve #2260, close #3503
---
 .../app/common/scripts/note-subscriber.ts     | 21 +++++++++
 .../views/components/reactions-viewer.vue     | 44 ++++++++++++-------
 .../api/endpoints/notes/reactions/delete.ts   | 13 ++++++
 3 files changed, 63 insertions(+), 15 deletions(-)

diff --git a/src/client/app/common/scripts/note-subscriber.ts b/src/client/app/common/scripts/note-subscriber.ts
index bc434c436..9545b5406 100644
--- a/src/client/app/common/scripts/note-subscriber.ts
+++ b/src/client/app/common/scripts/note-subscriber.ts
@@ -95,6 +95,7 @@ export default prop => ({
 						Vue.set(this.$_ns_target.reactionCounts, reaction, 0);
 					}
 
+					// Increment the count
 					this.$_ns_target.reactionCounts[reaction]++;
 
 					if (body.userId == this.$store.state.i.id) {
@@ -103,6 +104,26 @@ export default prop => ({
 					break;
 				}
 
+				case 'unreacted': {
+					const reaction = body.reaction;
+
+					if (this.$_ns_target.reactionCounts == null) {
+						return;
+					}
+
+					if (this.$_ns_target.reactionCounts[reaction] == null) {
+						return;
+					}
+
+					// Decrement the count
+					if (this.$_ns_target.reactionCounts[reaction] > 0) this.$_ns_target.reactionCounts[reaction]--;
+
+					if (body.userId == this.$store.state.i.id) {
+						Vue.set(this.$_ns_target, 'myReaction', null);
+					}
+					break;
+				}
+
 				case 'pollVoted': {
 					if (body.userId == this.$store.state.i.id) return;
 					const choice = body.choice;
diff --git a/src/client/app/common/views/components/reactions-viewer.vue b/src/client/app/common/views/components/reactions-viewer.vue
index 73267347b..a3c421bd3 100644
--- a/src/client/app/common/views/components/reactions-viewer.vue
+++ b/src/client/app/common/views/components/reactions-viewer.vue
@@ -1,16 +1,16 @@
 <template>
 <div class="mk-reactions-viewer">
 	<template v-if="reactions">
-		<span :class="{ reacted: note.myReaction == 'like' }" @click="react('like')" v-if="reactions.like" v-particle><mk-reaction-icon reaction="like" ref="like"/><span>{{ reactions.like }}</span></span>
-		<span :class="{ reacted: note.myReaction == 'love' }" @click="react('love')" v-if="reactions.love" v-particle><mk-reaction-icon reaction="love" ref="love"/><span>{{ reactions.love }}</span></span>
-		<span :class="{ reacted: note.myReaction == 'laugh' }" @click="react('laugh')" v-if="reactions.laugh" v-particle><mk-reaction-icon reaction="laugh" ref="laugh"/><span>{{ reactions.laugh }}</span></span>
-		<span :class="{ reacted: note.myReaction == 'hmm' }" @click="react('hmm')" v-if="reactions.hmm" v-particle><mk-reaction-icon reaction="hmm" ref="hmm"/><span>{{ reactions.hmm }}</span></span>
-		<span :class="{ reacted: note.myReaction == 'surprise' }" @click="react('surprise')" v-if="reactions.surprise" v-particle><mk-reaction-icon reaction="surprise" ref="surprise"/><span>{{ reactions.surprise }}</span></span>
-		<span :class="{ reacted: note.myReaction == 'congrats' }" @click="react('congrats')" v-if="reactions.congrats" v-particle><mk-reaction-icon reaction="congrats" ref="congrats"/><span>{{ reactions.congrats }}</span></span>
-		<span :class="{ reacted: note.myReaction == 'angry' }" @click="react('angry')" v-if="reactions.angry" v-particle><mk-reaction-icon reaction="angry" ref="angry"/><span>{{ reactions.angry }}</span></span>
-		<span :class="{ reacted: note.myReaction == 'confused' }" @click="react('confused')" v-if="reactions.confused" v-particle><mk-reaction-icon reaction="confused" ref="confused"/><span>{{ reactions.confused }}</span></span>
-		<span :class="{ reacted: note.myReaction == 'rip' }" @click="react('rip')" v-if="reactions.rip" v-particle><mk-reaction-icon reaction="rip" ref="rip"/><span>{{ reactions.rip }}</span></span>
-		<span :class="{ reacted: note.myReaction == 'pudding' }" @click="react('pudding')" v-if="reactions.pudding" v-particle><mk-reaction-icon reaction="pudding" ref="pudding"/><span>{{ reactions.pudding }}</span></span>
+		<span :class="{ reacted: note.myReaction == 'like' }" @click="toggleReaction('like')" v-if="reactions.like" v-particle><mk-reaction-icon reaction="like" ref="like"/><span>{{ reactions.like }}</span></span>
+		<span :class="{ reacted: note.myReaction == 'love' }" @click="toggleReaction('love')" v-if="reactions.love" v-particle><mk-reaction-icon reaction="love" ref="love"/><span>{{ reactions.love }}</span></span>
+		<span :class="{ reacted: note.myReaction == 'laugh' }" @click="toggleReaction('laugh')" v-if="reactions.laugh" v-particle><mk-reaction-icon reaction="laugh" ref="laugh"/><span>{{ reactions.laugh }}</span></span>
+		<span :class="{ reacted: note.myReaction == 'hmm' }" @click="toggleReaction('hmm')" v-if="reactions.hmm" v-particle><mk-reaction-icon reaction="hmm" ref="hmm"/><span>{{ reactions.hmm }}</span></span>
+		<span :class="{ reacted: note.myReaction == 'surprise' }" @click="toggleReaction('surprise')" v-if="reactions.surprise" v-particle><mk-reaction-icon reaction="surprise" ref="surprise"/><span>{{ reactions.surprise }}</span></span>
+		<span :class="{ reacted: note.myReaction == 'congrats' }" @click="toggleReaction('congrats')" v-if="reactions.congrats" v-particle><mk-reaction-icon reaction="congrats" ref="congrats"/><span>{{ reactions.congrats }}</span></span>
+		<span :class="{ reacted: note.myReaction == 'angry' }" @click="toggleReaction('angry')" v-if="reactions.angry" v-particle><mk-reaction-icon reaction="angry" ref="angry"/><span>{{ reactions.angry }}</span></span>
+		<span :class="{ reacted: note.myReaction == 'confused' }" @click="toggleReaction('confused')" v-if="reactions.confused" v-particle><mk-reaction-icon reaction="confused" ref="confused"/><span>{{ reactions.confused }}</span></span>
+		<span :class="{ reacted: note.myReaction == 'rip' }" @click="toggleReaction('rip')" v-if="reactions.rip" v-particle><mk-reaction-icon reaction="rip" ref="rip"/><span>{{ reactions.rip }}</span></span>
+		<span :class="{ reacted: note.myReaction == 'pudding' }" @click="toggleReaction('pudding')" v-if="reactions.pudding" v-particle><mk-reaction-icon reaction="pudding" ref="pudding"/><span>{{ reactions.pudding }}</span></span>
 	</template>
 </div>
 </template>
@@ -60,11 +60,25 @@ export default Vue.extend({
 		}
 	},
 	methods: {
-		react(reaction: string) {
-			this.$root.api('notes/reactions/create', {
-				noteId: this.note.id,
-				reaction: reaction
-			});
+		toggleReaction(reaction: string) {
+			const oldReaction = this.note.myReaction;
+			if (oldReaction) {
+				this.$root.api('notes/reactions/delete', {
+					noteId: this.note.id
+				}).then(() => {
+					if (oldReaction !== reaction) {
+						this.$root.api('notes/reactions/create', {
+							noteId: this.note.id,
+							reaction: reaction
+						});
+					}
+				});
+			} else {
+				this.$root.api('notes/reactions/create', {
+					noteId: this.note.id,
+					reaction: reaction
+				});
+			}
 		},
 		anime(reaction: string) {
 			if (this.$store.state.device.reduceMotion) return;
diff --git a/src/server/api/endpoints/notes/reactions/delete.ts b/src/server/api/endpoints/notes/reactions/delete.ts
index 367538bed..40139afee 100644
--- a/src/server/api/endpoints/notes/reactions/delete.ts
+++ b/src/server/api/endpoints/notes/reactions/delete.ts
@@ -2,6 +2,8 @@ import $ from 'cafy'; import ID, { transform } from '../../../../../misc/cafy-id
 import Reaction from '../../../../../models/note-reaction';
 import Note from '../../../../../models/note';
 import define from '../../../define';
+import { publishNoteStream } from '../../../../../stream';
+const ms = require('ms');
 
 export const meta = {
 	desc: {
@@ -13,6 +15,12 @@ export const meta = {
 
 	kind: 'reaction-write',
 
+	limit: {
+		duration: ms('1hour'),
+		max: 5,
+		minInterval: ms('3sec')
+	},
+
 	params: {
 		noteId: {
 			validator: $.type(ID),
@@ -60,4 +68,9 @@ export default define(meta, (ps, user) => new Promise(async (res, rej) => {
 	Note.update({ _id: note._id }, {
 		$inc: dec
 	});
+
+	publishNoteStream(note._id, 'unreacted', {
+		reaction: exist.reaction,
+		userId: user._id
+	});
 }));