OQAAT QLA events are captured successfully

Adds a on page load submission feature for all quiz taking/showing
pages.  Also ensures that session_started events are only returned once
for a OQAAT event.

Closes CNVS-15665

Test Plan:
  Approach #1:
    - Take a quiz with the "?debug_js=1" flag to see that events are being
      queued.
    - Rapidly register events then submit (attempting to leave some
      events in the buffer)
    - Confirm that the pending events were actually recorded.
  Approach #2:
    - Generate a bunch of events by quickly scrolling the page, and
      switching to and from the window, then leave the page
      ASAP. Answering events are higher priority and probably won't be
      stuck.
    - Confirm some events are missing.
    - Visit the quiz show page, then confirm that the events are now
      known.

Change-Id: If0a95eda6fd6dd90590996dcf55fa2b680c41b21
Reviewed-on: https://gerrit.instructure.com/45733
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Josh Simpson <jsimpson@instructure.com>
Reviewed-by: Ahmad Amireh <ahmad@instructure.com>
QA-Review: Sean Lewis <slewis@instructure.com>
Product-Review: Ryan Taylor <rtaylor@instructure.com>

app/coffeescripts/quizzes/dump_events.coffee

@@ -0,0 +1,9 @@
+define (require) ->
+  eventManager = require('compiled/quizzes/log_auditing')
+  (unregister) ->
+    if unregister
+      eventManager.unregisterAllTrackers()
+    if !eventManager.isRunning()
+      eventManager.start()
+    if eventManager.isDirty()
+      eventManager.deliver()

app/coffeescripts/quizzes/log_auditing/event_manager.coffee

@@ -40,6 +40,10 @@ define (require) ->
     #
     # EventTracker instances will be provided with a deliveryCallback that
     # enqueues events for delivery via this module.
+
+    unregisterAllTrackers: ->
+      this._trackerFactories = []
+
     start: ->
       state = this._state
       state.buffer = new EventBuffer()

app/coffeescripts/quizzes/log_auditing/event_trackers/session_started.coffee

@@ -13,6 +13,7 @@ define (require) ->
       debugConsole.log """
         I've been loaded by #{userAgent}.
         """
-      deliver({
-          'user_agent': userAgent
-        })
+      if location.href.indexOf("question") == -1 && location.href.indexOf("take") > 0
+        deliver({
+            'user_agent': userAgent
+          })

app/controllers/quizzes/quizzes_controller.rb

@@ -192,6 +192,8 @@ class Quizzes::QuizzesController < ApplicationController
         upload_url = api_v1_quiz_submission_files_path(:course_id => @context.id, :quiz_id => @quiz.id)
         js_env :UPLOAD_URL => upload_url
         js_env :SUBMISSION_VERSIONS_URL => course_quiz_submission_versions_url(@context, @quiz) unless @quiz.muted?
+        events_url = api_v1_course_quiz_submission_events_url(@context, @quiz, @submission)
+        js_env QUIZ_SUBMISSION_EVENTS_URL: events_url unless @js_env[:QUIZ_SUBMISSION_EVENTS_URL]
       end
 
       setup_attachments
@@ -837,9 +839,8 @@ class Quizzes::QuizzesController < ApplicationController
       redirect_to course_quiz_url(@context, @quiz) and return
     end
 
-    js_env({
-      :QUIZ_SUBMISSION_EVENTS_URL => api_v1_course_quiz_submission_events_url(@context, @quiz, @submission)
-    })
+    events_url = api_v1_course_quiz_submission_events_url(@context, @quiz, @submission)
+    js_env QUIZ_SUBMISSION_EVENTS_URL: events_url unless @js_env[:QUIZ_SUBMISSION_EVENTS_URL]
 
     @quiz_presenter = Quizzes::TakeQuizPresenter.new(@quiz, @submission, params)
     render :action => 'take_quiz'

public/javascripts/quiz_show.js

@@ -24,6 +24,7 @@ define([
   'quiz_inputs',
   'compiled/models/Quiz',
   'compiled/views/PublishButtonView',
+  'compiled/quizzes/dump_events',
   'jquery.instructure_date_and_time' /* dateString, time_field, datetime_field */,
   'jqueryui/dialog',
   'compiled/jquery/fixDialogButtons',
@@ -32,10 +33,11 @@ define([
   'jquery.instructure_misc_plugins' /* ifExists, confirmDelete */,
   'jquery.disableWhileLoading',
   'message_students' /* messageStudents */
-], function(I18n, $, MessageStudentsDialog, showAnswerArrows, inputMethods, Quiz, PublishButtonView) {
+], function(I18n, $, MessageStudentsDialog, showAnswerArrows, inputMethods, Quiz, PublishButtonView, QuizLogAuditingEventDumper) {
 
 
   $(document).ready(function () {
+    QuizLogAuditingEventDumper(true);
 
     function ensureStudentsLoaded(callback) {
       if ($('#quiz_details').length) {

public/javascripts/take_quiz.js

@@ -25,6 +25,7 @@ define([
   'compiled/views/quizzes/LDBLoginPopup',
   'worker!compiled/workers/quizzes/quiz_taking_police',
   'compiled/quizzes/log_auditing',
+  'compiled/quizzes/dump_events',
   'jquery.ajaxJSON' /* ajaxJSON */,
   'jquery.toJSON',
   'jquery.instructure_date_and_time' /* friendlyDatetime, friendlyDate */,
@@ -36,7 +37,7 @@ define([
   'tinymce.editor_box' /* editorBox */,
   'vendor/jquery.scrollTo' /* /\.scrollTo/ */,
   'compiled/behaviors/quiz_selectmenu'
-], function(FileUploadQuestionView, File, I18n, $, autoBlurActiveInput, _, LDBLoginPopup, QuizTakingPolice, QuizLogAuditing) {
+], function(FileUploadQuestionView, File, I18n, $, autoBlurActiveInput, _, LDBLoginPopup, QuizTakingPolice, QuizLogAuditing, QuizLogAuditingEventDumper) {
   var lastAnswerSelected = null;
   var lastSuccessfulSubmissionData = null;
   var showDeauthorizedDialog;
@@ -750,7 +751,7 @@ define([
         $timer.text($timeRunningTimeRemaining.text());
       }
     });
-
     QuizLogAuditing.start();
+    QuizLogAuditingEventDumper(false);
   });
 });

spec/coffeescripts/quizzes/log_auditing/event_manager_spec.coffee

@@ -73,3 +73,13 @@ define [
 
     ok !evtManager.isDirty(),
       "it flushes its buffer when sync is complete"
+  test "it should drop trackers", ->
+    evtManager = new EventManager({
+      autoDeliver: false,
+      deliveryUrl: '/events'
+    })
+    evtManager.registerTracker(TestEventTracker)
+    evtManager.unregisterAllTrackers()
+    testEventFactory.trigger("change")
+
+    ok !evtManager.isDirty(), "it doesn't have any active trackers"