completion/completion_completion.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * Course completion status for a particular user/course
  19  *
  20  * @package core_completion
  21  * @category completion
  22  * @copyright 2009 Catalyst IT Ltd
  23  * @author Aaron Barnes <aaronb@catalyst.net.nz>
  24  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  25  */
  26
  27 defined('MOODLE_INTERNAL') || die();
  28 require_once($CFG->dirroot.'/completion/data_object.php');
  29
  30 /**
  31  * Course completion status for a particular user/course
  32  *
  33  * @package core_completion
  34  * @category completion
  35  * @copyright 2009 Catalyst IT Ltd
  36  * @author Aaron Barnes <aaronb@catalyst.net.nz>
  37  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  38  */
  39 class completion_completion extends data_object {
  40
  41     /* @var string $table Database table name that stores completion information */
  42     public $table = 'course_completions';
  43
  44     /* @var array $required_fields Array of required table fields, must start with 'id'. */
  45     public $required_fields = array('id', 'userid', 'course',
  46         'timeenrolled', 'timestarted', 'timecompleted', 'reaggregate');
  47
  48     /* @var int $userid User ID */
  49     public $userid;
  50
  51     /* @var int $course Course ID */
  52     public $course;
  53
  54     /* @var int Time of course enrolment {@link completion_completion::mark_enrolled()} */
  55     public $timeenrolled;
  56
  57     /**
  58      * Time the user started their course completion {@link completion_completion::mark_inprogress()}
  59      * @var int
  60      */
  61     public $timestarted;
  62
  63     /* @var int Timestamp of course completion {@link completion_completion::mark_complete()} */
  64     public $timecompleted;
  65
  66     /* @var int Flag to trigger cron aggregation (timestamp) */
  67     public $reaggregate;
  68
  69
  70     /**
  71      * Finds and returns a data_object instance based on params.
  72      *
  73      * @param array $params associative arrays varname = >value
  74      * @return data_object instance of data_object or false if none found.
  75      */
  76     public static function fetch($params) {
  77         $cache = cache::make('core', 'coursecompletion');
  78
  79         $key = $params['userid'] . '_' . $params['course'];
  80         if ($hit = $cache->get($key)) {
  81             return $hit['value'];
  82         }
  83
  84         $tocache = self::fetch_helper('course_completions', __CLASS__, $params);
  85         $cache->set($key, ['value' => $tocache]);
  86         return $tocache;
  87     }
  88
  89     /**
  90      * Return status of this completion
  91      *
  92      * @return bool
  93      */
  94     public function is_complete() {
  95         return (bool) $this->timecompleted;
  96     }
  97
  98     /**
  99      * Mark this user as started (or enrolled) in this course
 100      *
 101      * If the user is already marked as started, no change will occur
 102      *
 103      * @param integer $timeenrolled Time enrolled (optional)
 104      * @return  int|null id of completion record on successful update.
 105      */
 106     public function mark_enrolled($timeenrolled = null) {
 107
 108         if ($this->timeenrolled === null) {
 109
 110             if ($timeenrolled === null) {
 111                 $timeenrolled = time();
 112             }
 113
 114             $this->timeenrolled = $timeenrolled;
 115         }
 116
 117         return $this->_save();
 118     }
 119
 120     /**
 121      * Mark this user as inprogress in this course
 122      *
 123      * If the user is already marked as inprogress, the time will not be changed
 124      *
 125      * @param integer $timestarted Time started (optional)
 126      * @return  int|null id of completion record on successful update.
 127      */
 128     public function mark_inprogress($timestarted = null) {
 129
 130         $timenow = time();
 131
 132         // Set reaggregate flag
 133         $this->reaggregate = $timenow;
 134
 135         if (!$this->timestarted) {
 136
 137             if (!$timestarted) {
 138                 $timestarted = $timenow;
 139             }
 140
 141             $this->timestarted = $timestarted;
 142         }
 143
 144         return $this->_save();
 145     }
 146
 147     /**
 148      * Mark this user complete in this course
 149      *
 150      * This generally happens when the required completion criteria
 151      * in the course are complete.
 152      *
 153      * @param integer $timecomplete Time completed (optional)
 154      * @return  int|null id of completion record on successful update.
 155      */
 156     public function mark_complete($timecomplete = null) {
 157         global $USER;
 158
 159         // Never change a completion time.
 160         if ($this->timecompleted) {
 161             return null;
 162         }
 163
 164         // Use current time if nothing supplied.
 165         if (!$timecomplete) {
 166             $timecomplete = time();
 167         }
 168
 169         // Set time complete.
 170         $this->timecompleted = $timecomplete;
 171         // Save record.
 172         if ($result = $this->_save()) {
 173             $data = $this->get_record_data();
 174             \core\event\course_completed::create_from_completion($data)->trigger();
 175         }
 176
 177         // Notify user.
 178         $course = get_course($data->course);
 179         $messagesubject = get_string('coursecompleted', 'completion');
 180         $a = [
 181             'coursename' => get_course_display_name_for_list($course),
 182             'courselink' => (string) new moodle_url('/course/view.php', array('id' => $course->id)),
 183         ];
 184         $messagebody = get_string('coursecompletedmessage', 'completion', $a);
 185         $messageplaintext = html_to_text($messagebody);
 186
 187         $eventdata = new \core\message\message();
 188         $eventdata->courseid          = $course->id;
 189         $eventdata->component         = 'moodle';
 190         $eventdata->name              = 'coursecompleted';
 191         $eventdata->userfrom          = core_user::get_noreply_user();
 192         $eventdata->userto            = $data->userid;
 193         $eventdata->notification      = 1;
 194         $eventdata->subject           = $messagesubject;
 195         $eventdata->fullmessage       = $messageplaintext;
 196         $eventdata->fullmessageformat = FORMAT_HTML;
 197         $eventdata->fullmessagehtml   = $messagebody;
 198         $eventdata->smallmessage      = $messageplaintext;
 199
 200         if ($courseimage = \core_course\external\course_summary_exporter::get_course_image($course)) {
 201             $eventdata->customdata  = [
 202                 'notificationpictureurl' => $courseimage,
 203             ];
 204         }
 205         message_send($eventdata);
 206
 207         return $result;
 208     }
 209
 210     /**
 211      * Save course completion status
 212      *
 213      * This method creates a course_completions record if none exists
 214      * @access  private
 215      * @return  int|null id of completion record on successful update.
 216      */
 217     private function _save() {
 218         if ($this->timeenrolled === null) {
 219             $this->timeenrolled = 0;
 220         }
 221
 222         // Save record
 223         if (isset($this->id)) {
 224             $success = $this->update();
 225         } else {
 226             // Make sure reaggregate field is not null
 227             if (!$this->reaggregate) {
 228                 $this->reaggregate = 0;
 229             }
 230
 231             // Make sure timestarted is not null
 232             if (!$this->timestarted) {
 233                 $this->timestarted = 0;
 234             }
 235
 236             $success = $this->insert();
 237         }
 238
 239         if ($success) {
 240             // Update the cached record.
 241             $cache = cache::make('core', 'coursecompletion');
 242             $data = $this->get_record_data();
 243             $key = $data->userid . '_' . $data->course;
 244             $cache->set($key, ['value' => $data]);
 245             return $this->id;
 246         }
 247
 248         return null;
 249     }
 250 }