cleanup, add handleStringifiedFile and addFile

src/Model/fileModel.ts

@@ -1,10 +1,23 @@
 // this file is responsible for managing files within chats.
 
-import ChatModel from "./chatModel";
+import ChatModel, { ChatMessage } from "./chatModel";
+
+import { parseValidObject } from "./Utility/utility";
 
 export default class FileModel {
   chatModel: ChatModel;
 
+  // handler
+  handleStringifiedFile = (stringifiedFile: string): void => {
+    const file: File | null = parseValidObject<File>(stringifiedFile);
+    if (file == null) return;
+  };
+
+  // methods
+  addFile = (file: File): void => {
+    this.chatModel.sendMessage("", file);
+  };
+
   // init
   constructor(chatModel: ChatModel) {
     this.chatModel = chatModel;