added hmac auth to report route

app/fileReceiver.js

@@ -1,7 +1,7 @@
 import Nanobus from 'nanobus';
 import Keychain from './keychain';
 import { delay, bytes, streamToArrayBuffer } from './utils';
-import { downloadFile, metadata, getApiUrl } from './api';
+import { downloadFile, metadata, getApiUrl, reportLink } from './api';
 import { blobStream } from './streams';
 import Zip from './zip';
 
@@ -53,6 +53,10 @@ export default class FileReceiver extends Nanobus {
     this.state = 'ready';
   }
 
+  async reportLink(reason) {
+    await reportLink(this.fileInfo.id, this.keychain, reason);
+  }
+
   sendMessageToSw(msg) {
     return new Promise((resolve, reject) => {
       const channel = new MessageChannel();