527 lines
20 KiB
PHP
527 lines
20 KiB
PHP
<?php
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// This file is part of the Studyplan plugin for Moodle
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <https://www.gnu.org/licenses/>.
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/**
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*
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* @package local_treestudyplan
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* @copyright 2023 P.M. Kuipers
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* @license https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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namespace local_treestudyplan;
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defined('MOODLE_INTERNAL') || die();
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require_once($CFG->libdir.'/externallib.php');
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class studyitem {
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public const COMPETENCY = 'competency';
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public const COURSE = 'course';
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public const JUNCTION = 'junction';
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public const BADGE = 'badge';
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public const FINISH = 'finish';
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public const START = 'start';
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public const INVALID = 'invalid';
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public const TABLE = "local_treestudyplan_item";
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private static $STUDYITEMCACHE = [];
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private $r; // Holds database record.
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private $id;
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private $courseinfo = null;
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private $studyline;
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private $aggregator;
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public function context(): \context {
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return $this->studyline->context();
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}
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public function studyline(): studyline {
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return $this->studyline;
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}
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public function conditions() {
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return $this->r->conditions;
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}
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public static function findById($id): self {
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if (!array_key_exists($id, self::$STUDYITEMCACHE)) {
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self::$STUDYITEMCACHE[$id] = new self($id);
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}
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return self::$STUDYITEMCACHE[$id];
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}
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public function __construct($id) {
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global $DB;
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$this->id = $id;
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$this->r = $DB->get_record(self::TABLE, ['id' => $id], "*", MUST_EXIST);
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$this->studyline = studyline::findById($this->r->line_id);
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$this->aggregator = $this->studyline()->studyplan()->aggregator();
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}
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public function id() {
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return $this->id;
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}
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public function slot() {
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return $this->r->slot;
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}
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public function layer() {
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return $this->r->layer;
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}
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public function type() {
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return $this->r->type;
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}
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public function courseid() {
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return $this->r->course_id;
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}
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public static function exists($id) {
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global $DB;
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return is_numeric($id) && $DB->record_exists(self::TABLE, array('id' => $id));
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}
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public static function editor_structure($value=VALUE_REQUIRED) {
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return new \external_single_structure([
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"id" => new \external_value(PARAM_INT, 'id of study item'),
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"type" => new \external_value(PARAM_TEXT, 'shortname of study item'),
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"conditions" => new \external_value(PARAM_TEXT, 'conditions for completion'),
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"slot" => new \external_value(PARAM_INT, 'slot in the study plan'),
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"layer" => new \external_value(PARAM_INT, 'layer in the slot'),
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"span" => new \external_value(PARAM_INT, 'how many periods the item spans'),
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"course" => courseinfo::editor_structure(VALUE_OPTIONAL),
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"badge" => badgeinfo::editor_structure(VALUE_OPTIONAL),
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"continuation_id" => new \external_value(PARAM_INT, 'id of continued item'),
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"connections" => new \external_single_structure([
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'in' => new \external_multiple_structure(studyitemconnection::structure()),
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'out' => new \external_multiple_structure(studyitemconnection::structure()),
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]),
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]);
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}
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public function editor_model() {
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return $this->generate_model("editor");
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}
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private function generate_model($mode) {
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// Mode parameter is used to geep this function for both editor model and export model.
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// (Export model results in fewer parameters on children, but is otherwise basically the same as this function).
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global $DB;
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$model = [
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'id' => $this->r->id, // Id is needed in export model because of link references.
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'type' => $this->isValid() ? $this->r->type : self::INVALID,
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'conditions' => $this->r->conditions,
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'slot' => $this->r->slot,
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'layer' => $this->r->layer,
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'span' => $this->r->span,
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'continuation_id' => $this->r->continuation_id,
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'connections' => [
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"in" => [],
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"out" => [],
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]
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];
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if ($mode == "export") {
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// Remove slot and layer.
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unset($model["slot"]);
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unset($model["layer"]);
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unset($model["continuation_id"]);
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$model["connections"] = []; // In export mode, connections is just an array of outgoing connections.
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if (!isset($this->r->conditions)) {
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unset($model["conditions"]);
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}
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}
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// Add course link if available.
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$ci = $this->getcourseinfo();
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if (isset($ci)) {
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if ($mode == "export") {
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$model['course'] = $ci->shortname();
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} else {
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$model['course'] = $ci->editor_model($this, $this->aggregator->usecorecompletioninfo());
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}
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}
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// Add badge info if available.
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if (is_numeric($this->r->badge_id) && $DB->record_exists('badge', array('id' => $this->r->badge_id))) {
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$badge = new \core_badges\badge($this->r->badge_id);
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$badgeinfo = new badgeinfo($badge);
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if ($mode == "export") {
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$model['badge'] = $badgeinfo->name();
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} else {
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// Also supply a list of linked users, so the badgeinfo can give stats on .
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// The amount issued, related to this studyplan.
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$studentids = $this->studyline()->studyplan()->find_linked_userids();
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$model['badge'] = $badgeinfo->editor_model($studentids);
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}
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}
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if ($mode == "export") {
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// Also export gradables.
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$gradables = gradeinfo::list_studyitem_gradables($this);
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if (count($gradables) > 0) {
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$model["gradables"] = [];
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foreach ($gradables as $g) {
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$model["gradables"][] = $g->export_model();;
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}
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}
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}
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// Add incoming and outgoing connection info.
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$connout = studyitemconnection::find_outgoing($this->id);
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if ($mode == "export") {
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foreach ($connout as $c) {
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$model["connections"][] = $c->to_id();
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}
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} else {
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foreach ($connout as $c) {
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$model['connections']['out'][$c->to_id()] = $c->model();
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}
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$connin = studyitemconnection::find_incoming($this->id);
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foreach ($connin as $c) {
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$model['connections']['in'][$c->from_id()] = $c->model();
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}
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}
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return $model;
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}
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public static function add($fields, $import=false) {
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global $DB;
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$addable = ['line_id', 'type', 'layer', 'conditions', 'slot',
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'competency_id', 'course_id', 'badge_id', 'continuation_id', 'span'];
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$info = [ 'layer' => 0, ];
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foreach ($addable as $f) {
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if (array_key_exists($f, $fields)) {
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$info[$f] = $fields[$f];
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}
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}
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$id = $DB->insert_record(self::TABLE, $info);
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$item = self::findById($id);
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if ($item->type() == self::COURSE) {
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// Signal the studyplan that a course has been added so it can be marked for csync cascading.
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$item->studyline()->studyplan()->mark_csync_changed();
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}
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return $item;
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}
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public function edit($fields) {
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global $DB;
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$editable = ['conditions', 'course_id', 'continuation_id', 'span'];
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$info = ['id' => $this->id, ];
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foreach ($editable as $f) {
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if (array_key_exists($f, $fields) && isset($fields[$f])) {
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$info[$f] = $fields[$f];
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}
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}
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$DB->update_record(self::TABLE, $info);
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// Reload record after edit.
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$this->r = $DB->get_record(self::TABLE, ['id' => $this->id], "*", MUST_EXIST);
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return $this;
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}
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public function isValid() {
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// Check if referenced courses, badges and/or competencies still exist.
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if ($this->r->type == static::COURSE) {
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return courseinfo::exists($this->r->course_id);
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} else if ($this->r->type == static::BADGE) {
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return badgeinfo::exists($this->r->badge_id);
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} else {
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return true;
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}
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}
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public function delete($force=false) {
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global $DB;
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// Check if this item is referenced in a START item.
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if ($force) {
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// Clear continuation id from any references to this item.
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$records = $DB->get_records(self::TABLE, ['continuation_id' => $this->id]);
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foreach ($records as $r) {
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$r->continuation_id = 0;
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$DB->update_record(self::TABLE, $r);
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}
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}
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if ($DB->count_records(self::TABLE, ['continuation_id' => $this->id]) > 0) {
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return success::fail('Cannot remove: item is referenced by another item');
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} else {
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// Delete al related connections to this item.
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studyitemconnection::clear($this->id);
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// Delete all grade inclusion references to this item.
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$DB->delete_records("local_treestudyplan_gradeinc", ['studyitem_id' => $this->id]);
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// Delete the item itself.
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$DB->delete_records(self::TABLE, ['id' => $this->id]);
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return success::success();
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}
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}
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/************************
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* *
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* reorder_studyitems *
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* *
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************************/
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public static function reorder($resequence) {
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global $DB;
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foreach ($resequence as $sq) {
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$DB->update_record(self::TABLE, [
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'id' => $sq['id'],
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'line_id' => $sq['line_id'],
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'slot' => $sq['slot'],
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'layer' => $sq['layer'],
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]);
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}
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return success::success();
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}
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public static function find_studyline_children(studyline $line) {
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global $DB;
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$list = [];
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$ids = $DB->get_fieldset_select(self::TABLE, "id", "line_id = :line_id ORDER BY layer", ['line_id' => $line->id()]);
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foreach ($ids as $id) {
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$item = self::findById($id, $line);
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$list[] = $item;
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}
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return $list;
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}
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private static function link_structure($value=VALUE_REQUIRED) {
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return new \external_single_structure([
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"id" => new \external_value(PARAM_INT, 'id of study item'),
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"type" => new \external_value(PARAM_TEXT, 'type of study item'),
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"completion" => completion::structure(),
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"studyline" => new \external_value(PARAM_TEXT, 'reference label of studyline'),
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"studyplan" => new \external_value(PARAM_TEXT, 'reference label of studyplan'),
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], 'basic info of referenced studyitem', $value);
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}
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private function link_model($userid) {
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global $DB;
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$line = $DB->get_record(studyline::TABLE, ['id' => $this->r->line_id]);
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$plan = $DB->get_record(studyplan::TABLE, ['id' => $line->studyplan_id]);
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return [
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"id" => $this->r->id,
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"type" => $this->r->type,
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"completion" => $this->completion($userid),
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"studyline" => $line->name(),
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"studyplan" => $plan->name(),
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];
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}
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public static function user_structure($value=VALUE_REQUIRED) {
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return new \external_single_structure([
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"id" => new \external_value(PARAM_INT, 'id of study item'),
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"type" => new \external_value(PARAM_TEXT, 'type of study item'),
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"completion" => new \external_value(PARAM_TEXT, 'completion state (incomplete|progress|completed|excellent)'),
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"slot" => new \external_value(PARAM_INT, 'slot in the study plan'),
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"layer" => new \external_value(PARAM_INT, 'layer in the slot'),
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"span" => new \external_value(PARAM_INT, 'how many periods the item spans'),
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"course" => courseinfo::user_structure(VALUE_OPTIONAL),
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"badge" => badgeinfo::user_structure(VALUE_OPTIONAL),
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"continuation" => self::link_structure(VALUE_OPTIONAL),
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"connections" => new \external_single_structure([
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'in' => new \external_multiple_structure(studyitemconnection::structure()),
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'out' => new \external_multiple_structure(studyitemconnection::structure()),
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]),
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], 'Study item info', $value);
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}
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public function user_model($userid) {
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global $CFG, $DB;
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$model = [
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'id' => $this->r->id,
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'type' => $this->r->type,
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'completion' => completion::label($this->completion($userid)),
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'slot' => $this->r->slot,
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'layer' => $this->r->layer,
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'span' => $this->r->span,
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'connections' => [
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"in" => [],
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"out" => [],
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]
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];
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// Add badge info if available.
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if (badgeinfo::exists($this->r->badge_id)) {
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$badge = new \core_badges\badge($this->r->badge_id);
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$badgeinfo = new badgeinfo($badge);
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$model['badge'] = $badgeinfo->user_model($userid);
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}
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// Add continuation_info if available.
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if (self::exists($this->r->continuation_id)) {
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$citem = self::findById($this->r->continuation_id);
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$model['continuation'] = $citem->link_model($userid);
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}
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// Add course if available.
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if (courseinfo::exists($this->r->course_id)) {
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$cinfo = $this->getcourseinfo();
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$model['course'] = $cinfo->user_model($userid, $this->aggregator->usecorecompletioninfo());
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}
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// Add incoming and outgoing connection info.
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$connout = studyitemconnection::find_outgoing($this->id);
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foreach ($connout as $c) {
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$model['connections']['out'][$c->to_id()] = $c->model();
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}
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$connin = studyitemconnection::find_incoming($this->id);
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foreach ($connin as $c) {
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$model['connections']['in'][$c->from_id()] = $c->model();
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}
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return $model;
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}
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public function getcourseinfo() {
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if (empty($this->courseinfo) && courseinfo::exists($this->r->course_id)) {
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$this->courseinfo = new courseinfo($this->r->course_id, $this);
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}
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return $this->courseinfo;
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}
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private function completion($userid) {
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global $DB;
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if ($this->isValid()) {
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if (strtolower($this->r->type) == 'course') {
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// Determine competency by competency completion.
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$courseinfo = $this->getcourseinfo();
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return $this->aggregator->aggregate_course($courseinfo, $this, $userid);
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} else if (strtolower($this->r->type) =='start') {
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// Does not need to use aggregator.
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// Either true, or the completion of the reference.
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if (self::exists($this->r->continuation_id)) {
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$citem = self::findById($this->r->continuation_id);
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return $citem->completion($userid);
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} else {
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return completion::COMPLETED;
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}
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} else if (in_array(strtolower($this->r->type), ['junction', 'finish'])) {
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// Completion of the linked items, according to the rule.
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$incompleted = [];
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// Retrieve incoming connections.
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$incoming = $DB->get_records(studyitemconnection::TABLE, ['to_id' => $this->r->id]);
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foreach ($incoming as $conn) {
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$item = self::findById($conn->from_id);
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$incompleted[] = $item->completion($userid);
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}
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return $this->aggregator->aggregate_junction($incompleted, $this, $userid);
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} else if (strtolower($this->r->type) =='badge') {
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global $DB;
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// Badge awarded.
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if (badgeinfo::exists($this->r->badge_id)) {
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$badge = new \core_badges\badge($this->r->badge_id);
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if ($badge->is_issued($userid)) {
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if ($badge->can_expire()) {
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// Get the issued badges and check if any of them have not expired yet.
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$badgesissued = $DB->get_records("badge_issued",
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["badge_id" => $this->r->badge_id,
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"user_id" => $userid]);
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$notexpired = false;
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$now = time();
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foreach ($badgesissued as $bi) {
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if ($bi->dateexpire == null || $bi->dateexpire > $now) {
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$notexpired = true;
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break;
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}
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}
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return ($notexpired) ? completion::COMPLETED : completion::INCOMPLETE;
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} else {
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return completion::COMPLETED;
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}
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} else {
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return completion::INCOMPLETE;
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}
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} else {
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return completion::INCOMPLETE;
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}
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} else {
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// Return incomplete for other types.
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return completion::INCOMPLETE;
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}
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} else {
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// Return incomplete for other types.
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return completion::INCOMPLETE;
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}
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}
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public function duplicate($newline) {
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global $DB;
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// Clone the database fields.
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$fields = clone $this->r;
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// Set new line id.
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unset($fields->id);
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$fields->line_id = $newline->id();
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// Create new record with the new data.
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$id = $DB->insert_record(self::TABLE, (array)$fields);
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$new = self::findById($id, $newline);
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// Copy the grading info if relevant.
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$gradables = gradeinfo::list_studyitem_gradables($this);
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foreach ($gradables as $g) {
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gradeinfo::include_grade($g->getGradeitem()->id, $new->id(), true);
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}
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return $new;
|
|
}
|
|
|
|
public function export_model() {
|
|
return $this->generate_model("export");
|
|
}
|
|
|
|
public static function import_item($model) {
|
|
unset($model["course_id"]);
|
|
unset($model["competency_id"]);
|
|
unset($model["badge_id"]);
|
|
unset($model["continuation_id"]);
|
|
if (isset($model["course"])) {
|
|
$model["course_id"] = courseinfo::id_from_shortname(($model["course"]));
|
|
}
|
|
if (isset($model["badge"])) {
|
|
$model["badge_id"] = badgeinfo::id_from_name(($model["badge"]));
|
|
}
|
|
|
|
$item = self::add($model, true);
|
|
|
|
if (isset($model["course_id"])) {
|
|
// Attempt to import the gradables.
|
|
foreach ($model["gradables"] as $gradable) {
|
|
gradeinfo::import($item, $gradable);
|
|
}
|
|
}
|
|
|
|
return $item;
|
|
}
|
|
|
|
}
|