fix(TextChannel#bulkDelete): use GenericAction#getMessage to handle r…

…eturn value correctly (#3664)

* Corrected the handling of the action

* Apply same fix to handling of single message in bulkDelete

* Revert to using await

src/structures/interfaces/TextBasedChannel.js

@@ -306,19 +306,16 @@ class TextBasedChannel {
       if (messageIDs.length === 0) return new Collection();
       if (messageIDs.length === 1) {
         await this.client.api.channels(this.id).messages(messageIDs[0]).delete();
-        const message = this.client.actions.MessageDelete.handle({
-          channel_id: this.id,
-          id: messageIDs[0],
-        }).message;
-        if (message) return new Collection([[message.id, message]]);
-        return new Collection();
+        const message = this.client.actions.MessageDelete.getMessage({
+          message_id: messageIDs[0],
+        }, this);
+        return message ? new Collection([[message.id, message]]) : new Collection();
       }
       await this.client.api.channels[this.id].messages['bulk-delete']
         .post({ data: { messages: messageIDs } });
-      return this.client.actions.MessageDeleteBulk.handle({
-        channel_id: this.id,
-        ids: messageIDs,
-      }).messages;
+      return messageIDs.reduce((col, id) => col.set(id, this.client.actions.MessageDeleteBulk.getMessage({
+        message_id: id,
+      }, this)), new Collection());
     }
     if (!isNaN(messages)) {
       const msgs = await this.messages.fetch({ limit: messages });