From ed7cd552f8175b25e67d9e611fa4db394b70f279 Mon Sep 17 00:00:00 2001
From: Simey Lameze <simey@moodle.com>
Date: Fri, 8 May 2020 15:21:59 +0800
Subject: [PATCH] MDL-68320 core: add campaign content to notifications page

---
 admin/index.php                         |  6 ++-
 admin/renderer.php                      | 20 +++++++++-
 config-dist.php                         |  9 +++++
 lib/templates/campaign_content.mustache | 50 +++++++++++++++++++++++++
 4 files changed, 83 insertions(+), 2 deletions(-)
 create mode 100644 lib/templates/campaign_content.mustache

diff --git a/admin/index.php b/admin/index.php
index ee3b2e3b85e..56603183479 100644
--- a/admin/index.php
+++ b/admin/index.php
@@ -899,6 +899,9 @@ if (empty($CFG->disabledevlibdirscheck) && (is_dir($CFG->dirroot.'/vendor') || i
 // Check if the site is being foced onto ssl.
 $overridetossl = !empty($CFG->overridetossl);
 
+// Check if moodle campaign content setting is enabled or not.
+$showcampaigncontent = !isset($CFG->showcampaigncontent) || $CFG->showcampaigncontent;
+
 admin_externalpage_setup('adminnotifications');
 
 $output = $PAGE->get_renderer('core', 'admin');
@@ -906,4 +909,5 @@ $output = $PAGE->get_renderer('core', 'admin');
 echo $output->admin_notifications_page($maturity, $insecuredataroot, $errorsdisplayed, $cronoverdue, $dbproblems,
                                        $maintenancemode, $availableupdates, $availableupdatesfetch, $buggyiconvnomb,
                                        $registered, $cachewarnings, $eventshandlers, $themedesignermode, $devlibdir,
-                                       $mobileconfigured, $overridetossl, $invalidforgottenpasswordurl, $croninfrequent);
+                                       $mobileconfigured, $overridetossl, $invalidforgottenpasswordurl, $croninfrequent,
+                                       $showcampaigncontent);
diff --git a/admin/renderer.php b/admin/renderer.php
index 45f46a57e3d..cda9ed65e60 100644
--- a/admin/renderer.php
+++ b/admin/renderer.php
@@ -282,6 +282,7 @@ class core_admin_renderer extends plugin_renderer_base {
      * @param bool $overridetossl Whether or not ssl is being forced.
      * @param bool $invalidforgottenpasswordurl Whether the forgotten password URL does not link to a valid URL.
      * @param bool $croninfrequent If true, warn that cron hasn't run in the past few minutes
+     * @param bool $showcampaigncontent Whether the campaign content should be visible or not.
      *
      * @return string HTML to output.
      */
@@ -289,7 +290,9 @@ class core_admin_renderer extends plugin_renderer_base {
             $cronoverdue, $dbproblems, $maintenancemode, $availableupdates, $availableupdatesfetch,
             $buggyiconvnomb, $registered, array $cachewarnings = array(), $eventshandlers = 0,
             $themedesignermode = false, $devlibdir = false, $mobileconfigured = false,
-            $overridetossl = false, $invalidforgottenpasswordurl = false, $croninfrequent = false) {
+            $overridetossl = false, $invalidforgottenpasswordurl = false, $croninfrequent = false,
+            $showcampaigncontent = false) {
+
         global $CFG;
         $output = '';
 
@@ -312,6 +315,7 @@ class core_admin_renderer extends plugin_renderer_base {
         $output .= $this->registration_warning($registered);
         $output .= $this->mobile_configuration_warning($mobileconfigured);
         $output .= $this->forgotten_password_url_warning($invalidforgottenpasswordurl);
+        $output .= $this->campaign_content($showcampaigncontent);
 
         //////////////////////////////////////////////////////////////////////////////////////////////////
         ////  IT IS ILLEGAL AND A VIOLATION OF THE GPL TO HIDE, REMOVE OR MODIFY THIS COPYRIGHT NOTICE ///
@@ -878,6 +882,20 @@ class core_admin_renderer extends plugin_renderer_base {
         return $output;
     }
 
+    /**
+     * Display campaign content.
+     *
+     * @param bool $showcampaigncontent Whether the campaign content should be visible or not.
+     * @return string the campaign content raw html.
+     */
+    protected function campaign_content(bool $showcampaigncontent): string {
+        if (!$showcampaigncontent) {
+            return '';
+        }
+
+        return $this->render_from_template('core/campaign_content', ['lang' => current_language()]);
+    }
+
     /**
      * Display a warning about the forgotten password URL not linking to a valid URL.
      *
diff --git a/config-dist.php b/config-dist.php
index ccc760ae7e0..995e0df8b0c 100644
--- a/config-dist.php
+++ b/config-dist.php
@@ -1055,6 +1055,15 @@ $CFG->admin = 'admin';
 //      $CFG->alternative_file_system_class = '\\local_myfilestorage\\file_system';
 //
 //=========================================================================
+// 15. CAMPAIGN CONTENT
+//=========================================================================
+//
+// We have added a campaign content to the notifications page, in case you want to hide that from your site you just
+// need to set showcampaigncontent setting to false.
+//
+//      $CFG->showcampaigncontent = true;
+//
+//=========================================================================
 // ALL DONE!  To continue installation, visit your main page with a browser
 //=========================================================================
 
diff --git a/lib/templates/campaign_content.mustache b/lib/templates/campaign_content.mustache
new file mode 100644
index 00000000000..dbba38284f2
--- /dev/null
+++ b/lib/templates/campaign_content.mustache
@@ -0,0 +1,50 @@
+{{!
+    This file is part of Moodle - http://moodle.org/
+
+    Moodle is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Moodle is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+}}
+{{!
+    @template core/campaign_content
+
+    Moodle campaign content template.
+
+    The purpose of this template is to render an iframe that contains campaign content.
+
+    Classes required for JS:
+    * none
+
+    Data attributes required for JS:
+    * none
+
+    Context variables required for this template:
+    * lang User's language.
+
+    Example context (json):
+    { "lang": "en"}
+}}
+<div class="alert alert-secondary alert-block fade in alert-dismissible">
+    <button type="button" class="close" data-dismiss="alert">&times;</button>
+    <iframe id="campaign-content" class="w-100 border-0"></iframe>
+</div>
+{{#js}}
+(function() {
+    var iframe = document.getElementById('campaign-content');
+    iframe.src = 'https://campaign.moodle.org/current/lms/{{lang}}/';
+    window.addEventListener('message', function (event) {
+        if (event.origin === 'https://campaign.moodle.org') {
+            iframe.style.height = event.data + 'px';
+        }
+    });
+})();
+{{/js}}