Add option to restrict course chat only for coaches - refs BT#13885

main/chat/chat.php

@@ -50,6 +50,7 @@ $view = new Template(get_lang('Chat'), false, false, false, true, false);
 $view->assign('icons', $iconList);
 $view->assign('emoji_strategy', CourseChatUtils::getEmojiStrategy());
 $view->assign('emoji_smile', \Emojione\Emojione::toImage(':smile:'));
+$view->assign('restrict_to_coach', api_get_configuration_value('course_chat_restrict_to_coach'));
 
 $template = $view->get_template('chat/chat.tpl');
 $content = $view->fetch($template);

main/inc/lib/CourseChatUtils.php

@@ -4,6 +4,8 @@
 use Michelf\MarkdownExtra;
 use Doctrine\Common\Collections\Criteria;
 use Chamilo\CourseBundle\Entity\CChatConnected;
+use Chamilo\CoreBundle\Entity\Course;
+use Chamilo\CoreBundle\Entity\Session;
 
 /**
  * Class CourseChat
@@ -41,20 +43,31 @@ class CourseChatUtils
     private function getUsersSubscriptions()
     {
         $em = Database::getManager();
+        /** @var Course $course */
         $course = $em->find('ChamiloCoreBundle:Course', $this->courseId);
 
         if ($this->sessionId) {
+            /** @var Session $session */
+            $session = $em->find('ChamiloCoreBundle:Session', $this->sessionId);
             $criteria = Criteria::create()->where(Criteria::expr()->eq('course', $course));
+            $userIsCoach = api_is_course_session_coach($this->userId, $course->getId(), $session->getId());
 
-            return $em
-                ->find('ChamiloCoreBundle:Session', $this->sessionId)
+            if (api_get_configuration_value('course_chat_restrict_to_coach')) {
+                if (!$userIsCoach) {
+                    $criteria->andWhere(
+                        Criteria::expr()->eq('status', Session::COACH)
+                    );
+                }
+            }
+
+            $criteria->orderBy(['status' => Criteria::DESC]);
+
+            return $session
                 ->getUserCourseSubscriptions()
                 ->matching($criteria);
         }
 
-        return $em
-            ->find('ChamiloCoreBundle:Course', $course)
-            ->getUsers();
+        return $course->getUsers();
     }
 
     /**

main/install/configuration.dist.php

@@ -731,3 +731,5 @@ $_configuration['gradebook_badge_sidebar'] = [
 // You need add a new option called "confirmation" to the registration settings
 //INSERT INTO settings_options (variable, value, display_text) VALUES ('allow_registration', 'confirmation', 'MailConfirmation');
 // ------ (End) Custom DB changes
+// Restrict course chat only for course coach in sessions
+//$_configuration['course_chat_restrict_to_coach'] = false;

main/template/default/chat/chat.tpl

@@ -6,13 +6,15 @@
         <div class="col-sm-8 col-md-7 col-lg-8">
             <div id="chat-tabs">
                 <ul class="nav nav-tabs" role="tablist">
-                    <li role="presentation" class="active">
-                        <a href="#all" aria-controls="all" role="tab" data-toggle="tab">{{ 'All'|get_lang }}</a>
-                    </li>
+                    {% if not restrict_to_coach %}
+                        <li role="presentation" class="active">
+                            <a href="#all" aria-controls="all" role="tab" data-toggle="tab">{{ 'All'|get_lang }}</a>
+                        </li>
+                    {% endif %}
                 </ul>
                 <div class="tab-content">
-                    <div role="tabpanel" class="tab-pane active" id="all">
-                        <div class="course-chat chat-history" id="chat-history"></div>
+                    <div role="tabpanel" class="tab-pane active" id="{{ restrict_to_coach ? '' : 'all' }}">
+                        <div class="course-chat chat-history" id="{{ restrict_to_coach ? '' : 'chat-history' }}"></div>
                     </div>
                 </div>
             </div>
@@ -41,7 +43,7 @@
                                             <textarea id="chat-writer" name="message"></textarea>
                                         </div>
                                         <div class="col-sm-3">
-                                            <button id="chat-send-message" type="button" class="btn btn-primary">{{ 'Send'|get_lang }}</button>
+                                            <button id="chat-send-message" type="button" disabled class="btn btn-primary">{{ 'Send'|get_lang }}</button>
                                         </div>
                                     </div>
                                 </div>
@@ -271,6 +273,8 @@ $(document).on('ready', function () {
             }
         });
 
+        $('button#chat-send-message').prop('disabled', false);
+
         if (exists) {
             $('#chat-tab-' + userId).tab('show');