Merge branch 'debounceScanner' into 'staging'

feat(scanner): Debounce scanner

See merge request hanfi/bgp_worker!13

src/js/main.js

 import {
     Html5QrcodeScanner,
+    Html5QrcodeScannerState,
     Html5QrcodeSupportedFormats
 } from "html5-qrcode";
 import {
@@ -201,7 +202,16 @@ async function handleQrError(msg, err){
   console.log("Qrcode Error: ", msg, err);
 }
 
+function debounceScanner() {
+  if(scanner.getState() != Html5QrcodeScannerState.SCANNING) {
+    return;
+  }
+  scanner.pause(false);
+  setTimeout(function() {if(scanner.getState() == Html5QrcodeScannerState.PAUSED){scanner.resume();}}, 1000);
+}
+
 async function handleItemScanResult(item_uuid) {
+  debounceScanner();
   if (item_uuid.length == 36) {
     console.log("Trying to add item by uuid (scanned)");
     if (item_uuid in received_items) {
@@ -310,6 +320,7 @@ export async function checkinItems() {
 }
 
 async function onRecevierScanSuccess(scannedCode) {
+  debounceScanner();
   var [uuid,signature] = scannedCode.split("/");
   console.log("Receiver scan success");
   scanner_audio.play();