Better upstreamUri error feedback

src/views/apps.js

@@ -178,6 +178,7 @@ angular.module('Application').controller('AppsController', ['$scope', '$translat
 
         submit: function () {
             $scope.applinksEdit.busyEdit = true;
+            $scope.applinksEdit.error = {};
 
             var accessRestriction = null;
             if ($scope.applinksEdit.accessRestrictionOption === 'groups') {
@@ -204,6 +205,12 @@ angular.module('Application').controller('AppsController', ['$scope', '$translat
             Client.updateApplink($scope.applinksEdit.id, data, function (error) {
                 $scope.applinksEdit.busyEdit = false;
 
+                if (error && error.statusCode === 400 && error.message.includes('upstreamUri')) {
+                    $scope.applinksEdit.error.upstreamUri = error.message;
+                    $scope.applinksEditForm.$setUntouched();
+                    $scope.applinksEditForm.$setPristine();
+                    return;
+                }
                 if (error) return console.error('Failed to update applink', error);
 
                 Client.refreshInstalledApps();

src/views/appstore.js

@@ -637,6 +637,7 @@ angular.module('Application').controller('AppStoreController', ['$scope', '$tran
             if (!$scope.applinksAdd.upstreamUri) return;
 
             $scope.applinksAdd.busy = true;
+            $scope.applinksAdd.error = {};
 
             var accessRestriction = null;
             if ($scope.applinksAdd.accessRestrictionOption === 'groups') {
@@ -655,6 +656,12 @@ angular.module('Application').controller('AppStoreController', ['$scope', '$tran
             Client.addApplink(data, function (error) {
                 $scope.applinksAdd.busy = false;
 
+                if (error && error.statusCode === 400 && error.message.includes('upstreamUri')) {
+                    $scope.applinksAdd.error.upstreamUri = error.message;
+                    $scope.applinksAddForm.$setUntouched();
+                    $scope.applinksAddForm.$setPristine();
+                    return;
+                }
                 if (error) return console.error('Failed to add applink', error);
 
                 // wait for dialog to be fully closed to avoid modal behavior breakage when moving to a different view already