GuildSavedMessages: save messages in a more compact way

src/data/GuildSavedMessages.ts

@@ -23,15 +23,18 @@ export class GuildSavedMessages extends BaseRepository {
   }
 
   public msgToSavedMessageData(msg: Message): ISavedMessageData {
-    return {
+    const data: ISavedMessageData = {
-      attachments: msg.attachments,
       author: {
         username: msg.author.username,
         discriminator: msg.author.discriminator
       },
-      content: msg.content,
+      content: msg.content
-      embeds: msg.embeds
     };
+
+    if (msg.attachments.length) data.attachments = msg.attachments;
+    if (msg.embeds.length) data.embeds = msg.embeds;
+
+    return data;
   }
 
   async cleanup() {

src/data/entities/SavedMessage.ts

@@ -2,13 +2,13 @@ import { Entity, Column, PrimaryColumn } from "typeorm";
 import { Message } from "eris";
 
 export interface ISavedMessageData {
-  attachments: object[];
+  attachments?: object[];
   author: {
     username: string;
     discriminator: string;
   };
   content: string;
-  embeds: object[];
+  embeds?: object[];
 }
 
 @Entity("messages")