658 lines
23 KiB
PHP
658 lines
23 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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* Model class for study items
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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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/**
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* Model class for study items
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*/
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class studyitem {
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/** @var string */
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public const COURSE = 'course';
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/** @var string */
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public const JUNCTION = 'junction';
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/** @var string */
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public const BADGE = 'badge';
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/** @var string */
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public const FINISH = 'finish';
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/** @var string */
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public const START = 'start';
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/** @var string */
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public const INVALID = 'invalid';
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/** @var string */
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public const TABLE = "local_treestudyplan_item";
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/**
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* Cache retrieved studyitems in this session
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* @var array */
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private static $cache = [];
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/**
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* Holds database record
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* @var stdClass
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*/
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private $r;
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/** @var int */
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private $id;
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/** @var courseinfo */
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private $courseinfo = null;
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/** @var studyline */
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private $studyline;
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/** @var aggregator */
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private $aggregator;
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/**
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* Return the context the studyplan is associated to
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*/
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public function context(): \context {
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return $this->studyline->context();
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}
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/**
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* Return the studyline for this item
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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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/**
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* Return the condition string for this item
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*/
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public function conditions() : string {
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return $this->r->conditions;
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}
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/**
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* Find record in database and return management object
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* @param int $id Id of database record
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*/
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public static function find_by_id($id): self {
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if (!array_key_exists($id, self::$cache)) {
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self::$cache[$id] = new self($id);
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}
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return self::$cache[$id];
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}
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/**
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* Construct a new model based on study item id
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* @param int $id Study item id
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*/
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public function __construct($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::find_by_id($this->r->line_id);
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$this->aggregator = $this->studyline()->studyplan()->aggregator();
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}
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/**
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* Return database identifier
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*/
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public function id() : int {
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return $this->id;
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}
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/**
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* Return period slot for this item
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*/
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public function slot() : int {
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return $this->r->slot;
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}
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/**
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* Return layer (order within a line and slot) for this item
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*/
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public function layer() : int {
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return $this->r->layer;
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}
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/**
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* Return study item type (see constants above)
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*/
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public function type() : string {
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return $this->r->type;
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}
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/**
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* Return id of linked course (only relevant on COURSE types) or 0 if none
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*/
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public function courseid() : int {
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return $this->r->course_id;
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}
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/**
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* Check if a studyitem with the given id exists
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* @param int $id Id of studyplan
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*/
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public static function exists($id) : bool {
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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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/**
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* Webservice structure for editor info
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* @param int $value Webservice requirement constant
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*/
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public static function editor_structure($value = VALUE_REQUIRED) : \external_description {
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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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/**
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* Webservice model for editor info
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* @return array Webservice data model
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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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/**
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* Create a model for the given type of operation
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* @param string $mode One of [ 'editor', 'export']
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*/
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private function generate_model($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->valid() ? $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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/**
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* Add a new item
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* @param array $fields Properties for study line ['line_id', 'type', 'layer', 'conditions', 'slot',
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* 'competency_id', 'course_id', 'badge_id', 'continuation_id', 'span']
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* @param bool $import Set tot true if calling on import
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*/
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public static function add($fields, $import = false) : self {
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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::find_by_id($id);
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if ($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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/**
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* Edit study item properties
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* @param array $fields Changed roperties for study line ['conditions', 'course_id', 'continuation_id', 'span']
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*/
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public function edit($fields) : self {
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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 $this;
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}
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/**
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* Check if references course and badges are still available
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*/
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public function valid() : bool {
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// Check if referenced courses and/or badges still exist.
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if ($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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/**
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* Delete studyitem
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* @param bool $force Force deletion even if item is referenced
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*/
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public function delete($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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* Reposition study items in line, layer and/or slot
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* @param mixed $resequence Array of item info [id, line_id, slot, layer]
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*/
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public static function reorder($resequence) : success {
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global $DB;
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foreach ($resequence as $sq) {
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// Only change line_id if new line is within the same studyplan page.
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if ( self::find_by_id($sq['id'])->studyline()->page()->id() ==
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studyline::find_by_id($sq['line_id'])->page()->id() ) {
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$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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}
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return success::success();
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}
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/**
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* Find all studyitems associated with a studyline
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* @param studyline $line The studyline to search for
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* @return studyitem[]
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*/
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public static function find_studyline_children(studyline $line) : array {
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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::find_by_id($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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/**
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* Webservice structure for linking between plans
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* @param int $value Webservice requirement constant
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*/
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private static function link_structure($value = VALUE_REQUIRED) : \external_description {
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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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/**
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* Webservice model for linking between plans
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* @param int $userid ID for user to links completion from
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*/
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private function link_model($userid) : array {
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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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/**
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* Webservice structure for userinfo
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* @param int $value Webservice requirement constant
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*/
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public static function user_structure($value = VALUE_REQUIRED) : \external_description {
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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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/**
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* Webservice model for user info
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* @param int $userid ID of user to check specific info for
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* @return array Webservice data model
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*/
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public function user_model($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::find_by_id($this->r->continuation_id);
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$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 $model;
|
|
|
|
}
|
|
|
|
/**
|
|
* Get courseinfo for studyitem if it references a course
|
|
*/
|
|
public function getcourseinfo() : ?courseinfo {
|
|
if (empty($this->courseinfo) && courseinfo::exists($this->r->course_id)) {
|
|
$this->courseinfo = new courseinfo($this->r->course_id, $this);
|
|
}
|
|
return $this->courseinfo;
|
|
}
|
|
|
|
/**
|
|
* Determine completion for a particular user
|
|
* @param int $userid User id
|
|
* @return int completion:: constant
|
|
*/
|
|
private function completion($userid) : int {
|
|
global $DB;
|
|
|
|
if ($this->valid()) {
|
|
if (strtolower($this->r->type) == 'course') {
|
|
// Determine competency by competency completion.
|
|
$courseinfo = $this->getcourseinfo();
|
|
return $this->aggregator->aggregate_course($courseinfo, $this, $userid);
|
|
} else if (strtolower($this->r->type) == 'start') {
|
|
// Does not need to use aggregator.
|
|
// Either true, or the completion of the reference.
|
|
if (self::exists($this->r->continuation_id)) {
|
|
$citem = self::find_by_id($this->r->continuation_id);
|
|
return $citem->completion($userid);
|
|
} else {
|
|
return completion::COMPLETED;
|
|
}
|
|
} else if (in_array(strtolower($this->r->type), ['junction', 'finish'])) {
|
|
// Completion of the linked items, according to the rule.
|
|
$incompleted = [];
|
|
// Retrieve incoming connections.
|
|
$incoming = $DB->get_records(studyitemconnection::TABLE, ['to_id' => $this->r->id]);
|
|
foreach ($incoming as $conn) {
|
|
$item = self::find_by_id($conn->from_id);
|
|
$incompleted[] = $item->completion($userid);
|
|
}
|
|
return $this->aggregator->aggregate_junction($incompleted, $this, $userid);
|
|
} else if (strtolower($this->r->type) == 'badge') {
|
|
global $DB;
|
|
// Badge awarded.
|
|
if (badgeinfo::exists($this->r->badge_id)) {
|
|
$badge = new \core_badges\badge($this->r->badge_id);
|
|
if ($badge->is_issued($userid)) {
|
|
if ($badge->can_expire()) {
|
|
// Get the issued badges and check if any of them have not expired yet.
|
|
$badgesissued = $DB->get_records("badge_issued",
|
|
["badge_id" => $this->r->badge_id,
|
|
"user_id" => $userid]);
|
|
$notexpired = false;
|
|
$now = time();
|
|
foreach ($badgesissued as $bi) {
|
|
if ($bi->dateexpire == null || $bi->dateexpire > $now) {
|
|
$notexpired = true;
|
|
break;
|
|
}
|
|
}
|
|
return ($notexpired) ? completion::COMPLETED : completion::INCOMPLETE;
|
|
} else {
|
|
return completion::COMPLETED;
|
|
}
|
|
} else {
|
|
return completion::INCOMPLETE;
|
|
}
|
|
} else {
|
|
return completion::INCOMPLETE;
|
|
}
|
|
} else {
|
|
// Return incomplete for other types.
|
|
return completion::INCOMPLETE;
|
|
}
|
|
} else {
|
|
// Return incomplete for other types.
|
|
return completion::INCOMPLETE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Duplicate this studyitem
|
|
* @param studyline $newline Study line to add duplicate to
|
|
*/
|
|
public function duplicate($newline) : self {
|
|
global $DB;
|
|
// Clone the database fields.
|
|
$fields = clone $this->r;
|
|
// Set new line id.
|
|
unset($fields->id);
|
|
$fields->line_id = $newline->id();
|
|
// Create new record with the new data.
|
|
$id = $DB->insert_record(self::TABLE, (array)$fields);
|
|
$new = self::find_by_id($id, $newline);
|
|
|
|
// Copy the grading info if relevant.
|
|
$gradables = gradeinfo::list_studyitem_gradables($this);
|
|
foreach ($gradables as $g) {
|
|
gradeinfo::include_grade($g->get_gradeitem()->id, $new->id(), true);
|
|
}
|
|
return $new;
|
|
}
|
|
|
|
/**
|
|
* Export essential information for export
|
|
* @return array information model
|
|
*/
|
|
public function export_model() {
|
|
return $this->generate_model("export");
|
|
}
|
|
|
|
|
|
/**
|
|
* Import studyitems from model
|
|
* @param array $model Decoded array
|
|
*/
|
|
public static function import_item($model) : self {
|
|
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;
|
|
}
|
|
|
|
}
|