Pull out the code to extract the results from the promise response

We do this as part of the promise response instead of folding it into the
`processManualInputs` function because enketo survey answers also returns a promise.
So we will have to set the `resultMap` asynchronously, which may run into timing issues
e-mission/e-mission-docs#727 (comment)

Let's revisit this later once we figure out how the answers should work

www/js/diary/services.js

@@ -2,7 +2,7 @@
 
 angular.module('emission.main.diary.services', ['emission.plugin.logger',
     'emission.services', 'emission.main.common.services',
-    'emission.incident.posttrip.manual', 'emission.survey.enketo.answer'])
+    'emission.incident.posttrip.manual'])
 .factory('DiaryHelper', function(CommonGraph, PostTripManualMarker, $translate){
   var dh = {};
   // dh.expandEarlierOrLater = function(id) {
@@ -375,7 +375,7 @@ angular.module('emission.main.diary.services', ['emission.plugin.logger',
   return dh;
 })
 .factory('Timeline', function(CommHelper, ConfirmHelper, SurveyOptions, $http, $ionicLoading, $window,
-    $rootScope, CommonGraph, UnifiedDataLoader, Logger, $injector, EnketoSurveyAnswer, $translate) {
+    $rootScope, CommonGraph, UnifiedDataLoader, Logger, $injector, $translate) {
     var timeline = {};
     // corresponds to the old $scope.data. Contains all state for the current
     // day, including the indication of the current day
@@ -1005,15 +1005,7 @@ angular.module('emission.main.diary.services', ['emission.plugin.logger',
     var readTripsAndUnprocessedInputs = function(day, tripReadFn, completeStatus, tq) {
       var manualPromises = ConfirmHelper.INPUTS.map(function(inp) {
         return UnifiedDataLoader.getUnifiedMessagesForInterval(
-            ConfirmHelper.inputDetails[inp].key, tq).then(function(results) {
-          switch(ConfirmHelper.inputDetails[inp].key) {
-            // Post-process survey answers
-            case 'manual/survey_response':
-              return EnketoSurveyAnswer.filterByNameAndVersion('TripConfirmSurvey', results);
-            default:
-              return results;
-          }
-        });
+            ConfirmHelper.inputDetails[inp].key, tq).then(manualInputFactory.extractResult);
       });
       let tripsReadPromise = tripReadFn(day);
       // var surveyAnswersPromise = EnketoSurvey.getAllSurveyAnswers("manual/confirm_survey", { populateLabels: true });

www/js/survey/enketo/enketo-trip-button.js

@@ -15,6 +15,7 @@
 angular.module('emission.survey.enketo.trip.button',
     ['emission.stats.clientstats',
         'emission.survey.enketo.launch',
+        'emission.survey.enketo.answer',
         'emission.survey.inputmatcher'])
 .directive('enketoTripButton', function() {
   return {
@@ -138,7 +139,7 @@ angular.module('emission.survey.enketo.trip.button',
 
   $scope.init();
 })
-.factory("EnketoTripButtonService", function(InputMatcher, $timeout) {
+.factory("EnketoTripButtonService", function(InputMatcher, EnketoSurveyAnswer, $timeout) {
   var etbs = {};
   console.log("Creating EnketoTripButtonService");
   etbs.key = "manual/trip_user_input";
@@ -147,6 +148,7 @@ angular.module('emission.survey.enketo.trip.button',
   /**
    * Embed 'inputType' to the trip.
    */
+   etbs.extractResult = (results) => EnketoSurveyAnswer.filterByNameAndVersion('TripConfirmSurvey', results);
 
    etbs.processManualInputs = function(manualResults, resultMap) {
     if (manualResults.length > 1) {

www/js/survey/multilabel/multi-label-ui.js

@@ -257,6 +257,8 @@ angular.module('emission.survey.multilabel.buttons',
    * Embed 'inputType' to the trip.
    */
 
+   mls.extractResult = (results) => results;
+
    mls.processManualInputs = function(manualResults, resultMap) {
      var mrString = 'unprocessed manual inputs '
           + manualResults.map(function(item, index) {