issue #96: implement restriction by enrolment methods

classes/local/restrictions/base.php

@@ -0,0 +1,72 @@
+<?php
+// This file is part of Moodle - https://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 <https://www.gnu.org/licenses/>.
+
+namespace local_recompletion\local\restrictions;
+
+use admin_settingpage;
+use MoodleQuickForm;
+use stdClass;
+
+/**
+ * Base restriction class.
+ *
+ * @package    local_recompletion
+ * @author     Dmitrii Metelkin <[email protected]>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+abstract class base {
+
+    /**
+     * Check if needs to reset completion for a given user.
+     *
+     * @param int $userid - user id.
+     * @param stdClass $course - course record.
+     * @param stdClass $config - recompletion config.
+     */
+    abstract public static function should_reset(int $userid, stdClass $course, stdClass $config): bool;
+
+    /**
+     * Add params to form.
+     *
+     * @param MoodleQuickForm $mform
+     */
+    public static function editingform(MoodleQuickForm $mform): void {
+    }
+
+    /**
+     * Set form data after submitting.
+     *
+     * @param stdClass $data
+     */
+    public static function set_form_data(stdClass $data): void {
+    }
+
+    /**
+     * Add site level settings for this plugin.
+     *
+     * @param admin_settingpage $settings
+     */
+    public static function settings(admin_settingpage $settings): void {
+    }
+
+    /**
+     * Get restriction reason.
+     * @return string
+     */
+    public static function get_restriction_reason(): string {
+        return get_string('restricted', 'local_recompletion');
+    }
+}

classes/local/restrictions/enrol.php

@@ -0,0 +1,134 @@
+<?php
+// This file is part of Moodle - https://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 <https://www.gnu.org/licenses/>.
+
+namespace local_recompletion\local\restrictions;
+
+use admin_settingpage;
+use core_component;
+use MoodleQuickForm;
+use stdClass;
+
+/**
+ * Enrolment method restriction class.
+ *
+ * @package    local_recompletion
+ * @author     Dmitrii Metelkin <[email protected]>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class enrol extends base {
+
+    /**
+     * Add params to form.
+     *
+     * @param MoodleQuickForm $mform
+     */
+    public static function editingform(MoodleQuickForm $mform): void {
+        $config = get_config('local_recompletion');
+        $options = [
+            'multiple' => true,
+            'noselectionstring' => get_string('all'),
+        ];
+
+        $plugins = array_keys(core_component::get_plugin_list('enrol'));
+        $enrolplugins = array_map(function($plugin) {
+            return get_string('pluginname', 'enrol_' . $plugin);
+        }, array_combine($plugins, $plugins));
+
+        $mform->addElement(
+            'autocomplete',
+            'restrictenrol',
+            get_string('restrictenrol', 'local_recompletion'),
+            $enrolplugins,
+            $options
+        );
+
+        $mform->setDefault('restrictenrol', $config->restrictenrol);
+        $mform->addHelpButton('restrictenrol', 'restrictenrol', 'local_recompletion');
+    }
+
+    /**
+     * Set form data after submitting.
+     * @param stdClass $data
+     */
+    public static function set_form_data(stdClass $data): void {
+        if (isset($data->restrictenrol) && is_array($data->restrictenrol)) {
+            $data->restrictenrol = implode(',', $data->restrictenrol);
+        }
+    }
+
+    /**
+     * Add site level settings for this plugin.
+     *
+     * @param admin_settingpage $settings
+     */
+    public static function settings(admin_settingpage $settings): void {
+        $enrolplugins = array_keys(core_component::get_plugin_list('enrol'));
+        $options = array_map(function($plugin) {
+            return get_string('pluginname', 'enrol_' . $plugin);
+        }, array_combine($enrolplugins, $enrolplugins));
+
+        $settings->add(new \admin_setting_configmulticheckbox(
+            'local_recompletion/restrictenrol',
+            get_string('restrictenrol', 'local_recompletion'),
+            get_string('restrictenrol_help', 'local_recompletion'),
+            [],
+            $options
+        ));
+    }
+
+    /**
+     * Check if needs to reset completion for a given user.
+     *
+     * @param int $userid - user id.
+     * @param stdClass $course - course record.
+     * @param stdClass $config - recompletion config.
+     */
+    public static function should_reset(int $userid, stdClass $course, stdClass $config): bool {
+        global $DB;
+
+        // Not restricted to any enrol methods.
+        if (empty($config->restrictenrol) || !is_string($config->restrictenrol)) {
+            return true;
+        }
+
+        $allowedenrols = explode(',', $config->restrictenrol);
+        $courseinstances = enrol_get_instances($course->id, false);
+
+        $courseallowedinstances = array_filter($courseinstances, function ($courseinstance) use ($allowedenrols){
+            return in_array($courseinstance->enrol, $allowedenrols);
+        });
+
+        // Course doesn't have allowed enrolment methods.
+        if (empty($courseallowedinstances)) {
+            return false;
+        }
+
+        // Check if a user is enrolled using one of the allowed instances.
+        list($sql, $params) = $DB->get_in_or_equal(array_keys($courseallowedinstances), SQL_PARAMS_NAMED);
+        $params['userid'] = $userid;
+        $userenrolments = $DB->get_records_select('user_enrolments', "enrolid $sql AND userid = :userid", $params);
+
+        return !empty($userenrolments);
+    }
+
+    /**
+     * Get restriction reason.
+     * @return string
+     */
+    public static function get_restriction_reason(): string {
+        return get_string('restrictedbyenrol', 'local_recompletion');
+    }
+}

classes/recompletion_form.php

@@ -125,6 +125,12 @@ public function definition() {
             $fqn::editingform($mform);
         }
 
+        $mform->addElement('header', 'restrictionsheader', get_string('restrictionsheader', 'local_recompletion'));
+        $restrictions = local_recompletion_get_supported_restrictions();
+        foreach ($restrictions as $plugin) {
+            $fqn = 'local_recompletion\\local\\restrictions\\' . $plugin;
+            $fqn::editingform($mform);
+        }
         $mform->disabledIf('deletegradedata', 'recompletiontype', 'eq', '');
         $mform->disabledIf('archivecompletiondata', 'recompletiontype', 'eq', '');
         $mform->disabledIf('archivecompletiondata', 'forcearchive', 'eq');

classes/task/check_recompletion.php

@@ -182,13 +182,26 @@ protected function notify_user($userid, $course, $config) {
      */
     public function reset_user($userid, $course, $config = null) {
         global $CFG, $DB;
+
+        $errors = [];
+
         if (empty($config)) {
             $config = (object) $DB->get_records_menu('local_recompletion_config',
                                                      ['course' => $course->id], '', 'name, value');
         }
         if (empty($config->recompletiontype)) {
             throw new \moodle_exception('recompletionnotenabled', 'local_recompletion');
         }
+
+        $restrictions = local_recompletion_get_supported_restrictions();
+        foreach ($restrictions as $plugin) {
+            $fqn = 'local_recompletion\\local\\restrictions\\' . $plugin;
+            if (!$fqn::should_reset($userid, $course, $config)) {
+                $errors[] = $fqn::get_restriction_reason();
+                return $errors;
+            }
+        }
+
         // Archive and delete course completion.
         $this->reset_completions($userid, $course, $config);
 
@@ -206,7 +219,6 @@ public function reset_user($userid, $course, $config = null) {
         }
 
         $plugins = local_recompletion_get_supported_plugins();
-        $errors = [];
         foreach ($plugins as $plugin) {
             $fqn = 'local_recompletion\\plugins\\' . $plugin;
             $error = $fqn::reset($userid, $course, $config);

lang/en/local_recompletion.php

@@ -196,3 +196,10 @@
 $string['h5pattempts'] = 'H5P attempts (mod_h5pactivity)';
 $string['h5pattempts_help'] = 'How to handle H5P attempts within the course. If archive is selected, the old H5P attempts will be archived in the local_recompletion_h5p and local_recompletion_h5pr tables.';
 $string['archiveh5p'] = 'Archive old H5P attempts (mod_h5pactivity)';
+$string['pluginssettings'] = 'Plugins settings';
+$string['restrictionsettings'] = 'Restrictions settings';
+$string['restrictenrol'] = 'Enrol method';
+$string['restrictenrol_help'] = 'Ony users enrolled with selected enrol methods will be included in resetting completion data. If none selected, that means no restrictions on enrolment method for users.';
+$string['restrictionsheader'] = 'Restrictions';
+$string['restricted'] = 'Resetting completion for a given user is restricted';
+$string['restrictedbyenrol'] = 'Resetting completion for a given user is restricted by enrolment method';

locallib.php

@@ -53,13 +53,39 @@ function local_recompletion_get_supported_plugins() {
     return $plugins;
 }
 
+/**
+ * Get list of supported restriction classes.
+ * @return array
+ */
+function local_recompletion_get_supported_restrictions(): array {
+    global $CFG;
+
+    $restrictions = [];
+    $files = scandir($CFG->dirroot. '/local/recompletion/classes/local/restrictions');
+    foreach ($files as $file) {
+        $class = clean_param(str_replace('.php', '', $file), PARAM_ALPHANUMEXT);
+        if (!empty($class) && $class !== 'base') {
+            $restrictions[] = $class;
+        }
+    }
+
+    return $restrictions;
+}
+
 /**
  * Loads form data.
  *
  * @param string[] $mformdata
  * @return object
  */
 function local_recompletion_set_form_data($mformdata) {
+
+    $restrictions = local_recompletion_get_supported_restrictions();
+    foreach ($restrictions as $plugin) {
+        $fqn = 'local_recompletion\\local\\restrictions\\' . $plugin;
+        $fqn::set_form_data($mformdata);
+    }
+
     $data = (array)$mformdata;
     if (key_exists('recompletionemailbody', $data)) {
         $recompletionemailbody = $data['recompletionemailbody'];

recompletion.php

@@ -83,6 +83,11 @@
     $setnames[] = 'archive'.$plugin;
 }
 
+$restrictions = local_recompletion_get_supported_restrictions();
+foreach ($restrictions as $plugin) {
+    $setnames[] = 'restrict' . $plugin;
+}
+
 // Create the settings form instance.
 $form = new local_recompletion_recompletion_form('recompletion.php?id='.$id, array('course' => $course));
 
@@ -121,7 +126,7 @@
         }
     }
     // Redirect to the course main page.
-    $url = new moodle_url('/course/view.php', array('id' => $course->id));
+    $url = new moodle_url('/local/recompletion/recompletion.php', array('id' => $course->id));
     redirect($url, get_string('recompletionsettingssaved', 'local_recompletion'));
 } else if (!empty($config)) {
     $form->set_data(local_recompletion_get_data($config));

resetcompletion.php

@@ -47,9 +47,11 @@
 
 $context = context_course::instance($course->id);
 if ($USER->id <> $userid) {
+    $cancelurl = new moodle_url('/local/recompletion/participants.php', array('id' => $course->id));
     require_capability('local/recompletion:manage', $context);
     $user = $DB->get_record('user', array('id' => $userid));
 } else {
+    $cancelurl = course_get_url($course);
     require_capability('local/recompletion:resetmycompletion', $context);
     $user = $USER;
 }
@@ -63,7 +65,7 @@
         $returnurl = course_get_url($course);
     }
     if (!empty($errors)) {
-        redirect($returnurl, explode(',', $errors), '',  \core\output\notification::NOTIFY_WARNING);
+        redirect($returnurl, implode(', ', $errors), '',  \core\output\notification::NOTIFY_WARNING);
     } else {
         redirect($returnurl, get_string('completionresetuser', 'local_recompletion', fullname($user)));
     }
@@ -80,7 +82,6 @@
 echo $OUTPUT->header();
 echo $OUTPUT->heading(get_string("resetcompletionfor", "local_recompletion", fullname($user)));
 
-$cancelurl = course_get_url($course);
 $confirmurl = $PAGE->url;
 $confirmurl->param('confirm', 1);
 $confirmurl->param('user', $userid);

settings.php

@@ -62,9 +62,26 @@
         new lang_string('forcearchivecompletiondata', 'local_recompletion'),
         new lang_string('forcearchivecompletiondata_help', 'local_recompletion'), 0));
 
+    $settings->add(new admin_setting_heading('local_recompletion/pluginsettings',
+        get_string('pluginssettings', 'local_recompletion'),
+        ''
+    ));
+
     $plugins = local_recompletion_get_supported_plugins();
     foreach ($plugins as $plugin) {
         $fqn = 'local_recompletion\\plugins\\' . $plugin;
         $fqn::settings($settings);
     }
+
+    $settings->add(new admin_setting_heading('local_recompletion/restrictionsettings',
+        get_string('restrictionsettings', 'local_recompletion'),
+        ''
+    ));
+
+    $restrictions = local_recompletion_get_supported_restrictions();
+    foreach ($restrictions as $plugin) {
+        $fqn = 'local_recompletion\\local\\restrictions\\' . $plugin;
+        $fqn::settings($settings);
+    }
+
 }