Clean up reactions, add remove all reactions (#890)

* Clean up reactions, add remove all reactions

* Reorganize reactions

* Re-add Gawdl3y's precious little inline

* Update Message.js

src/client/actions/ActionsManager.js

@@ -8,6 +8,7 @@ class ActionsManager {
     this.register('MessageUpdate');
     this.register('MessageReactionAdd');
     this.register('MessageReactionRemove');
+    this.register('MessageReactionRemoveAll');
     this.register('ChannelCreate');
     this.register('ChannelDelete');
     this.register('ChannelUpdate');

src/client/actions/MessageReactionRemoveAll.js

@@ -0,0 +1,21 @@
+const Action = require('./Action');
+const Constants = require('../../util/Constants');
+
+class MessageReactionRemoveAll extends Action {
+  handle(data) {
+    const channel = this.client.channels.get(data.channel_id);
+    if (!channel || channel.type === 'voice') return false;
+
+    const message = channel.messages.get(data.message_id);
+    if (!message) return false;
+
+    message._clearReactions();
+    this.client.emit(Constants.Events.MESSAGE_REACTION_REMOVE_ALL, message);
+
+    return {
+      message,
+    };
+  }
+}
+
+module.exports = MessageReactionRemoveAll;