feat: add failedqrscans route

lib/machine-loader.js

@@ -492,6 +492,12 @@ function updateDiagnostics (deviceId, images) {
     .catch(err => logger.error('while running machine diagnostics: ', err))
 }
 
+const updateFailedQRScans = (deviceId, frames) => {
+  const directory = `${OPERATOR_DATA_DIR}/failedQRScans/${deviceId}/`
+  const filenames = _.map(no => `${no}.jpg`, _.range(0, _.size(frames)))
+  return updatePhotos(directory, _.zip(filenames, frames))
+}
+
 function createPhoto (name, data, dir) {
   if (!data) {
     logger.error(`Diagnostics error: No data to save for ${name} photo`)
@@ -506,9 +512,8 @@ function createPhoto (name, data, dir) {
 function updatePhotos (dir, photoPairs) {
   const dirname = path.join(dir)
   _.attempt(() => makeDir.sync(dirname))
-  return Promise.all(_.map(
-    ([filename, data]) => createPhoto(filename, data, dirname),
-    photoPairs
+  return Promise.all(photoPairs.map(
+    ([filename, data]) => createPhoto(filename, data, dirname)
   ))
 }
 
@@ -527,5 +532,6 @@ module.exports = {
   getMachineIds,
   emptyMachineUnits,
   refillMachineUnits,
-  updateDiagnostics
+  updateDiagnostics,
+  updateFailedQRScans
 }