add 'download all certificates' link to nav menus

Author: HobieCat

lib.php

@@ -312,6 +312,27 @@ function mod_customcert_output_fragment_editelement($args) {
     return $form->render();
 }
 
+/**
+ * This function extends the course navigation block for the site.
+ *
+ * @param \navigation_node $parentnode
+ * @param \stdClass $course
+ * @param \context_course $context
+ */
+function customcert_extend_navigation_course(\navigation_node $parentnode, \stdClass $course, \context_course $context) {
+    global $PAGE;
+
+    $addnode = $context->contextlevel === 50;
+    $addnode = $addnode && !($context->instanceid === SITEID);
+    $addnode = $addnode && has_capability('mod/customcert:viewallcertificates', $context);
+    $isCourseNav = is_null($PAGE->cm->instance);
+    if ($addnode && $isCourseNav) {
+        if ($node = build_downloadall_node($isCourseNav, $course, $context)) {
+            $parentnode->add_node($node);
+        }
+    }
+}
+
 /**
  * This function extends the settings navigation block for the site.
  *
@@ -343,6 +364,12 @@ function customcert_extend_settings_navigation(settings_navigation $settings, na
         $customcertnode->add_node($node, $beforekey);
     }
 
+    if (has_capability('mod/customcert:viewallcertificates', $PAGE->cm->context)) {
+        if ($node = build_downloadall_node(false, $PAGE->cm->get_course(), null)) {
+            $customcertnode->add_node($node, $beforekey);
+        }
+    }
+
     if (has_capability('mod/customcert:verifycertificate', $settings->get_page()->cm->context)) {
         $node = navigation_node::create(get_string('verifycertificate', 'customcert'),
             new moodle_url('/mod/customcert/verify_certificate.php', array('contextid' => $settings->get_page()->cm->context->id)),
@@ -354,6 +381,50 @@ function customcert_extend_settings_navigation(settings_navigation $settings, na
     return $customcertnode->trim_if_empty();
 }
 
+/**
+ * Build the navigation node for the 'Download certificates' item.
+ *
+ * @param boolean $isCourseNav
+ * @param \stdClass $course
+ * @param \course_context $context
+ * @return \navigation_node|null null if there are no certifcates available for the download
+ */
+function build_downloadall_node(bool $isCourseNav, stdClass $course, \context_course $context = null) {
+
+    global $DB, $PAGE;
+
+    if (!$isCourseNav) {
+        $courseContext = \context_course::instance($course->id);
+        //Check if there is available certs
+        $certs = $DB->get_records('customcert', ['id' => $PAGE->cm->instance]);
+        $users = $DB->get_records('role_assignments', ['contextid' => $courseContext->id]);
+        $urlparams = ['customcertid' => $PAGE->cm->instance];
+    } else {
+        $certs = $DB->get_records('customcert', ['course' => $context->instanceid]);
+        $users = $DB->get_records('role_assignments', ['contextid' => $context->id]);
+        $urlparams = ['courseid' => $course->id];
+    }
+    $availablecerts = false;
+    foreach ($certs as $certid => $cert_fields) {
+        foreach ($users as $userid => $user_fields) {
+            if (!$DB->get_record('customcert_issues', ['userid' => $user_fields->userid, 'customcertid' => $certid])) {
+                continue;
+            }
+            $availablecerts = true;
+            break;
+        }
+        if ($availablecerts) break;
+    }
+    if ($availablecerts) {
+        $node = \navigation_node::create(get_string('bulkdownloadlink', 'mod_customcert'),
+                new \moodle_url('/mod/customcert/downloadcerts.php', $urlparams),
+                \navigation_node::TYPE_SETTING, null, 'mod_customcert_downloadcerts',
+                new \pix_icon('a/download_all', 'certificates'));
+        return $node;
+    }
+    return null;
+}
+
 /**
  * Add nodes to myprofile page.
  *
@@ -420,7 +491,8 @@ function mod_customcert_inplace_editable($itemtype, $itemid, $newvalue) {
  */
 function mod_customcert_get_fontawesome_icon_map() {
     return [
-        'mod_customcert:download' => 'fa-download'
+        'mod_customcert:deletelocalcopy' => 'fa-minus-square',
+        'mod_customcert:download' => 'fa-download',
     ];
 }