fix(core): update

ts/letter/classes.letterservice.ts

@@ -9,9 +9,33 @@ export interface ILetterConstructorOptions {
 export class LetterService {
   public platformServiceRef: SzPlatformService;
   public options: ILetterConstructorOptions;
+  public letterxpressAccount: plugins.letterxpress.LetterXpressAccount;
+  public typedrouter = new plugins.typedrequest.TypedRouter();
 
   constructor(platformServiceRefArg: SzPlatformService, optionsArg: ILetterConstructorOptions) {
     this.platformServiceRef = platformServiceRefArg;
     this.options = optionsArg;
+    this.platformServiceRef.typedrouter.addTypedRouter(this.typedrouter);
+
+    this.typedrouter.addTypedHandler<
+      plugins.servezoneInterfaces.platformservice.letter.IRequest_SendLetter
+    >(new plugins.typedrequest.TypedHandler('sendLetter', async dataArg => {
+      if(dataArg.needsCover) {
+        
+      }
+      return {
+        processId: '',
+      }
+    }));
   }
+
+  public async start() {
+    this.letterxpressAccount = new plugins.letterxpress.LetterXpressAccount({
+      username: this.options.letterxpressUser,
+      apiKey: this.options.letterxpressToken,
+    });
+    await this.letterxpressAccount.start();
+  }
+
+  public async stop() {}
 }