add uuid check

app/assets/javascripts/exercises.js.erb

@@ -238,6 +238,48 @@ $(document).on('turbolinks:load', function() {
 
   };
 
+  var observeExportStartButtons = function(){
+    $('.export-start').on('click', function(e){
+      e.preventDefault();
+      $('#export-modal').modal({
+        height: 250
+      });
+      $('#export-modal').modal('show');
+      exportExerciseStart($(this).attr('data-exercise-id'));
+    });
+  }
+
+  var exportExerciseStart = function(exerciseID) {
+    var $exerciseDiv = $('#export-exercise');
+    // var accountLinkID = $exerciseDiv.attr('data-account-link');
+    var $messageDiv = $exerciseDiv.children('.export-message');
+    var $actionsDiv = $exerciseDiv.children('.export-exercise-actions');
+
+    $messageDiv.html('requesting status');
+    $actionsDiv.html('spinning');
+
+    return $.ajax({
+      type: 'POST',
+      url: '/exercises/' + exerciseID + '/export_external_check',
+      // data: {
+      //   account_link: accountLinkID
+      // },
+      dataType: 'json',
+      success: function(response) {
+        if (response.error) {
+          $messageDiv.html(response.error);
+          $actionsDiv.html('Retry?');
+        }
+        $messageDiv.html(response.message);
+        return $actionsDiv.html(response.actions);
+      },
+      error: function(a, b, c) {
+        return alert('error:' + c);
+      }
+    });
+  };
+
+
   var overrideTextareaTabBehavior = function() {
     $('.form-group textarea[name$="[content]"]').on('keydown', function(event) {
       if (event.which === TAB_KEY_CODE) {
@@ -293,6 +335,7 @@ $(document).on('turbolinks:load', function() {
       // ignore tags table since it is in the dom before other tables
     if ($('table:not(#tags-table)').isPresent()) {
       enableBatchUpdate();
+      observeExportStartButtons();
     } else if ($('.edit_exercise, .new_exercise').isPresent()) {
       execution_environments = $('form').data('execution-environments');
       file_types = $('form').data('file-types');
@@ -303,6 +346,7 @@ $(document).on('turbolinks:load', function() {
       observeExecutionEnvironment();
       observeUnpublishedState();
       overrideTextareaTabBehavior();
+
     } else if ($('#files.jstree').isPresent()) {
         var fileTypeSelect = $('#code_ocean_file_file_type_id');
         fileTypeSelect.on("change", function() {updateFileTemplates(fileTypeSelect.val())});

app/assets/stylesheets/exercises.css.scss

@@ -176,3 +176,30 @@ a.file-heading {
     }
   }
 }
+
+#export-modal {
+  .modal-content {
+    min-height: unset;
+    height: 300px;
+  }
+}
+
+#export-exercise{
+  display: flex;
+}
+
+.export-message {
+  flex-grow: 1;
+  font-size: 12px;
+  padding-right: 5px;
+}
+
+.export-exercise-actions {
+  max-width: 110px;
+  min-width: 110px;
+}
+
+.export-button {
+  font-size: 12px;
+  width: 100%;
+}

app/controllers/exercises_controller.rb

@@ -7,7 +7,7 @@ class ExercisesController < ApplicationController
 
   before_action :handle_file_uploads, only: [:create, :update]
   before_action :set_execution_environments, only: [:create, :edit, :new, :update]
-  before_action :set_exercise_and_authorize, only: MEMBER_ACTIONS + [:push_proforma_xml, :clone, :implement, :working_times, :intervention, :search, :run, :statistics, :submit, :reload, :feedback, :study_group_dashboard]
+  before_action :set_exercise_and_authorize, only: MEMBER_ACTIONS + [:push_proforma_xml, :clone, :implement, :working_times, :intervention, :search, :run, :statistics, :submit, :reload, :feedback, :study_group_dashboard, :export_external_check]
   before_action :set_external_user_and_authorize, only: [:statistics]
   before_action :set_file_types, only: [:create, :edit, :new, :update]
   before_action :set_course_token, only: [:implement]
@@ -119,6 +119,48 @@ class ExercisesController < ApplicationController
     end
   end
 
+  def export_external_check
+    @codeharbor_link = current_user.codeharbor_link
+    url = 'http://localhost:3001/import_uuid_check'
+
+    conn = Faraday.new(url: url) do |faraday|
+      faraday.options[:open_timeout] = 5
+      faraday.options[:timeout] = 5
+
+      faraday.adapter Faraday.default_adapter
+    end
+
+    error = false
+    response_hash = {}
+    message = ''
+    begin
+      response = conn.post do |req|
+        req.headers['Content-Type'] = 'application/json'
+        req.headers['Authorization'] = 'Bearer ' + @codeharbor_link.api_key
+        req.body = {uuid: @exercise.uuid}.to_json
+      end
+      response_hash = JSON.parse(response.body, symbolize_names: true)
+      message = response_hash[:message]
+    rescue Faraday::ClientError
+      message = 'an error occured'
+      error = true
+    end
+
+    render json: {
+      message: message,
+      actions: render_to_string(
+        partial: 'export_actions',
+        locals: {
+          exercise: @exercise,
+          exercise_found: response_hash[:exercise_found],
+          update_right: response_hash[:update_right],
+          error: error
+        }
+      )
+
+    }, status: 200
+  end
+
   def import_uuid_check
     user = user_for_oauth2_request
     return render json: {}, status: 401 if user.nil?

app/policies/exercise_policy.rb

@@ -7,7 +7,7 @@ class ExercisePolicy < AdminOrAuthorPolicy
     define_method(action) { admin? || teacher? }
   end
 
-  [:clone?, :destroy?, :edit?, :statistics?, :update?, :feedback?, :push_proforma_xml?].each do |action|
+  [:clone?, :destroy?, :edit?, :statistics?, :update?, :feedback?, :push_proforma_xml?, :export_external_check?].each do |action|
     define_method(action) { admin? || author? }
   end
 

app/views/exercises/_export_actions.html.slim

@@ -0,0 +1,20 @@
+- if error
+    = button_tag type: 'button', class:'btn btn-primary pull-right export-button', onclick: "exportExerciseStart(#{exercise.id})" do
+      i.fa.fa-refresh.confirm-icon
+      = ' Retry'
+- else
+  - if exercise_found
+    - if update_right
+      = button_tag type: 'button', class:'btn btn-primary pull-right export-action export-button', data: {'export-type' => 'export'} do
+        i.fa.fa-check.confirm-icon
+        = ' Overwrite'
+    = button_tag type: 'button', class:'btn btn-primary pull-right export-action export-button', data: {'export-type' => 'create_new'} do
+      i.fa.fa-check.confirm-icon-alt
+      = ' Create new'
+  - else
+    = button_tag type: 'button', class:'btn btn-primary pull-right export-action export-button', data: {'export-type' => 'export'} do
+      i.fa.fa-check.confirm-icon
+      = ' Export'
+= button_tag type: 'submit', class:'btn btn-secondary pull-right export-button', data: {dismiss: 'modal'} do
+  i.fa.fa-remove.abort-icon
+  = ' Abort'

app/views/exercises/_export_dialogcontent.html.slim

@@ -0,0 +1,5 @@
+#export-exercise
+  .export-message
+    = 'This should not be seen'
+  .export-exercise-actions
+    = 'This neither'

app/views/exercises/index.html.slim

@@ -46,7 +46,9 @@ h1 = Exercise.model_name.human(count: 2)
                 li = link_to(t('activerecord.models.user_exercise_feedback.other'), feedback_exercise_path(exercise), class: 'dropdown-item') if policy(exercise).feedback?
                 li = link_to(t('shared.destroy'), exercise, data: {confirm: t('shared.confirm_destroy')}, method: :delete, class: 'dropdown-item') if policy(exercise).destroy?
                 li = link_to(t('.clone'), clone_exercise_path(exercise), data: {confirm: t('shared.confirm_destroy')}, method: :post, class: 'dropdown-item') if policy(exercise).clone?
-                li = link_to(t('exercises.export_codeharbor.label'), push_proforma_xml_exercise_path(exercise), method: :post, class: 'dropdown-item') if policy(exercise).push_proforma_xml?
+                li = link_to(t('exercises.export_codeharbor.label'), '', class: 'dropdown-item export-start', data: {'exercise-id' => exercise.id}) if policy(exercise).push_proforma_xml?
 
 = render('shared/pagination', collection: @exercises)
 p = render('shared/new_button', model: Exercise)
+
+= render('shared/modal', id: 'export-modal', title: t('exercises.export_codeharbor.dialogtitle'), template: 'exercises/_export_dialogcontent')