544 lines
19 KiB
PHP
544 lines
19 KiB
PHP
<?php
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namespace local_treestudyplan;
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require_once($CFG->libdir.'/externallib.php');
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class studyplanpage {
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const TABLE = "local_treestudyplan_page";
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private static $CACHE = [];
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private $r; // Holds database record
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private $id;
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private $studyplan;
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public function aggregator(){
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return $this->studyplan->aggregator();
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}
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// Cache constructors to avoid multiple creation events in one session.
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public static function findById($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[$id];
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}
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private function __construct($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' => $id]);
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$this->studyplan = studyplan::findById($this->r->studyplan_id);
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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 studyplan() : studyplan {
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return $this->studyplan;
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}
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public function shortname(){
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return $this->r->shortname;
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}
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public function periods(){
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return $this->r->periods;
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}
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public function fullname(){
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return $this->r->fullname;
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}
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public function startdate(){
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return new \DateTime($this->r->startdate);
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}
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public function enddate(){
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if($this->r->enddate && strlen($this->r->enddate) > 0){
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return new \DateTime($this->r->enddate);
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}
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else{
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// return a date 100 years into the future
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return (new \DateTime($this->r->startdate))->add(new \DateInterval("P100Y"));
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}
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}
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public static function simple_structure($value=VALUE_REQUIRED){
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return new \external_single_structure([
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"id" => new \external_value(PARAM_INT, 'id of studyplan page'),
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"fullname" => new \external_value(PARAM_TEXT, 'name of studyplan page'),
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"shortname"=> new \external_value(PARAM_TEXT, 'shortname of studyplan page'),
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"periods" => new \external_value(PARAM_INT, 'number of periods in studyplan page'),
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"description"=> new \external_value(PARAM_TEXT, 'description of studyplan page'),
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"startdate" => new \external_value(PARAM_TEXT, 'start date of studyplan'),
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"enddate" => new \external_value(PARAM_TEXT, 'end date of studyplan'),
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],'Studyplan page basic info',$value);
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}
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public function simple_model(){
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return [
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'id' => $this->r->id,
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'fullname' => $this->r->fullname,
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'shortname' => $this->r->shortname,
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'periods' => $this->r->periods,
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'description' => $this->r->description,
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'startdate' => $this->r->startdate,
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'enddate' => $this->r->enddate,
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];
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}
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public static function editor_structure($value=VALUE_REQUIRED){
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return new \external_single_structure([
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"id" => new \external_value(PARAM_INT, 'id of studyplan'),
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"name" => new \external_value(PARAM_TEXT, 'name of studyplan page'),
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"shortname"=> new \external_value(PARAM_TEXT, 'shortname of studyplan page'),
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"description"=> new \external_value(PARAM_TEXT, 'description of studyplan page'),
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"periods" => new \external_value(PARAM_INT, 'number of periods in studyplan page'),
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"startdate" => new \external_value(PARAM_TEXT, 'start date of studyplan page'),
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"enddate" => new \external_value(PARAM_TEXT, 'end date of studyplan page'),
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"studylines" => new \external_multiple_structure(studyline::editor_structure()),
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],'Studyplan page full structure',$value);
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}
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public function editor_model(){
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global $DB;
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$model = [
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'id' => $this->r->id,
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'name' => $this->r->name,
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'shortname' => $this->r->shortname,
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'description' => $this->r->description,
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'periods' => $this->r->periods,
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'startdate' => $this->r->startdate,
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'enddate' => $this->r->enddate,
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'studylines' => [],
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];
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$children = studyline::find_page_children($this);
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foreach($children as $c)
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{
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$model['studylines'][] = $c->editor_model();
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}
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return $model;
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}
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public static function add($fields){
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global $CFG, $DB;
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if(!isset($fields['studyplan_id'])){
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throw new \InvalidArgumentException("parameter 'studyplan_id' missing");
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}
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$addable = ['studyplan_id','fullname','shortname','description','periods','startdate','enddate'];
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$info = ['enddate' => null ];
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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, $info);
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return self::findById($id); // make sure the new page is immediately cached
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}
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public function edit($fields){
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global $DB;
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$editable = ['fullname','shortname','description','periods','startdate','enddate'];
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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,$fields)){
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$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 $this;
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}
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public function delete($force=false){
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global $DB;
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if($force){
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$children = studyline::find_page_children($this);
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foreach($children as $c){
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$c->delete($force);
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}
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}
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if($DB->count_records('local_treestudyplan_line',['studyplan_id' => $this->id]) > 0){
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return success::fail('cannot delete studyplan that still has studylines');
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}
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else
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{
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$DB->delete_records('local_treestudyplan_page', ['id' => $this->id]);
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return success::success();
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}
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}
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public static function find_all($contextid=-1){
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global $DB, $USER;
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$list = [];
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if($contextid <= 0){
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$ids = $DB->get_fieldset_select(self::TABLE,"id","");
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}
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else{
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if($contextid == 1){
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$contextid = 1;
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$where = "context_id <= :contextid OR context_id IS NULL";
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} else {
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$where = "context_id = :contextid";
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}
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$ids = $DB->get_fieldset_select(self::TABLE,"id",$where,["contextid" => $contextid]);
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}
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foreach($ids as $id)
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{
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$list[] = self::findById($id);
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}
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return $list;
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}
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public static function find_by_shortname($shortname, $contextid = 0): array{
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global $DB;
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$list = [];
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$where = "shortname = :shortname AND context_id = :contextid";
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if($contextid == 0){
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$where .= "OR context_id IS NULL";
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}
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$ids = $DB->get_fieldset_select(self::TABLE,"id",$where,["shortname"=>$shortname, "contextid" => $contextid]);
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foreach($ids as $id)
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{
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$list[] = self::findById($id);
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}
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return $list;
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}
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public static function find_for_user($userid)
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{
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global $DB;
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$sql = "SELECT s.id FROM {local_treestudyplan} s
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INNER JOIN {local_treestudyplan_cohort} j ON j.studyplan_id = s.id
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INNER JOIN {cohort_members} cm ON j.cohort_id = cm.cohortid
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WHERE cm.userid = :userid";
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$cohort_plan_ids = $DB->get_fieldset_sql($sql, ['userid' => $userid]);
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$sql = "SELECT s.id FROM {local_treestudyplan} s
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INNER JOIN {local_treestudyplan_user} j ON j.studyplan_id = s.id
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WHERE j.user_id = :userid";
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$user_plan_ids = $DB->get_fieldset_sql($sql, ['userid' => $userid]);
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$plans = [];
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foreach($cohort_plan_ids as $id) {
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$plans[$id] = self::findById($id);
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}
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foreach($user_plan_ids as $id) {
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if(!array_key_exists($id,$plans)){
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$plans[$id] = self::findById($id);
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}
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}
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return $plans;
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}
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static public function exist_for_user($userid)
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{
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global $DB;
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$count = 0;
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$sql = "SELECT s.* FROM {local_treestudyplan} s
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INNER JOIN {local_treestudyplan_cohort} j ON j.studyplan_id = s.id
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INNER JOIN {cohort_members} cm ON j.cohort_id = cm.cohortid
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WHERE cm.userid = :userid";
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$count += $DB->count_records_sql($sql, ['userid' => $userid]);
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$sql = "SELECT s.* FROM {local_treestudyplan} s
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INNER JOIN {local_treestudyplan_user} j ON j.studyplan_id = s.id
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WHERE j.user_id = :userid";
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$count += $DB->count_records_sql($sql, ['userid' => $userid]);
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return ($count > 0);
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}
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public static function user_structure($value=VALUE_REQUIRED){
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return new \external_single_structure([
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"id" => new \external_value(PARAM_INT, 'id of studyplan page'),
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"fullname" => new \external_value(PARAM_TEXT, 'name of studyplan page'),
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"shortname"=> new \external_value(PARAM_TEXT, 'shortname of studyplan page'),
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"description"=> new \external_value(PARAM_TEXT, 'description of studyplan page'),
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"periods" => new \external_value(PARAM_INT, 'number of slots in studyplan page'),
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"startdate" => new \external_value(PARAM_TEXT, 'start date of studyplan page'),
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"enddate" => new \external_value(PARAM_TEXT, 'end date of studyplan page'),
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"studylines" => new \external_multiple_structure(studyline::user_structure()),
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],'Studyplan page with user info',$value);
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}
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public function user_model($userid){
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$model = [
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'id' => $this->r->id,
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'fullname' => $this->r->name,
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'shortname' => $this->r->shortname,
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'description' => $this->r->description,
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'periods' => $this->r->periods,
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'startdate' => $this->r->startdate,
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'enddate' => $this->r->enddate,
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'studylines' => [],
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];
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$children = studyline::find_page_children($this);
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foreach($children as $c)
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{
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$model['studylines'][] = $c->user_model($userid);
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}
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return $model;
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}
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public static function find_studyplan_children(studyplan $plan)
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{
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global $DB;
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$list = [];
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$ids = $DB->get_fieldset_select(self::TABLE,"id","studyplan_id = :plan_id ORDER BY startdate",
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['plan_id' => $plan->id()]);
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foreach($ids as $id) {
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$list[] = self::findById($id);
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}
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return $list;
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}
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public static function duplicate_page($page_id,$name,$shortname)
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{
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$ori = self::findById($page_id);
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$new = $ori->duplicate($name,$shortname);
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return $new->simple_model();
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}
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public function duplicate($name,$shortname)
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{
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// First duplicate the studyplan structure
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$new = studyplanpage::add([
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'fullname' => $name,
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'shortname' => $shortname,
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'description' => $this->r->description,
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'pages' => $this->r->pages,
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'startdate' => $this->r->startdate,
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'enddate' => empty($this->r->enddate)?null:$this->r->enddate,
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]);
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// next, copy the studylines
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$children = studyline::find_page_children($this);
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$itemtranslation = [];
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$linetranslation = [];
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foreach($children as $c){
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$newchild = $c->duplicate($this,$itemtranslation);
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$linetranslation[$c->id()] = $newchild->id();
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}
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// now the itemtranslation array contains all of the old child id's as keys and all of the related new ids as values
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// (feature of the studyline::duplicate function)
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// use this to recreate the lines in the new plan
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foreach(array_keys($itemtranslation) as $item_id){
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// copy based on the outgoing connections of each item, to avoid duplicates
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$connections = studyitemconnection::find_outgoing($item_id);
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foreach($connections as $conn){
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studyitemconnection::connect($itemtranslation[$conn->from_id],$itemtranslation[$conn->to_id]);
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}
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}
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return $new;
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}
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public static function export_structure()
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{
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return new \external_single_structure([
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"format" => new \external_value(PARAM_TEXT, 'format of studyplan export'),
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"content"=> new \external_value(PARAM_TEXT, 'exported studyplan content'),
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],'Exported studyplan');
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}
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public function export_page()
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{
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$model = $this->export_model();
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$json = json_encode([
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"type"=>"studyplanpage",
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"version"=>2.0,
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"page"=>$model
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],\JSON_PRETTY_PRINT);
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return [ "format" => "application/json", "content" => $json];
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}
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public function export_page_csv()
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{
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//TODO: Period shortnames instead of just P1, P2, P3 etc
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$model = $this->editor_model();
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$slots = intval($model["slots"]);
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// First line
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$csv = "\"Studyline[{$slots}]\"";
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for($i = 1; $i <= $slots; $i++){
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$csv .= ",\"P{$i}\"";
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}
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$csv .= "\r\n";
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// next, make one line per studyline
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foreach($model["studylines"] as $line){
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// determine how many fields are simultaneous in the line at maximum
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$maxlines = 1;
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for($i = 1; $i <= $slots; $i++){
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if(count($line["slots"]) > $i){
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$ct = 0;
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foreach($line["slots"][$i][studyline::SLOTSET_COMPETENCY] as $itm){
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if($itm["type"] == "course"){
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$ct += 1;
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}
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}
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if($ct > $maxlines){
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$maxlines = $ct;
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}
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}
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}
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for($lct = 0; $lct < $maxlines; $lct++){
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$csv .= "\"{$line["name"]}\"";
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for($i = 1; $i <= $slots; $i++){
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$filled = false;
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if(count($line["slots"]) > $i){
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$ct = 0;
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foreach($line["slots"][$i][studyline::SLOTSET_COMPETENCY] as $itm){
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if($itm["type"] == "course"){
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if($ct == $lct){
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$csv .= ",\"";
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$csv .= $itm["course"]["fullname"];
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$csv .= "\r\n";
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$first = true;
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foreach($itm["course"]["grades"] as $g){
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if($g["selected"]){
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if($first){
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$first = false;
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}
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else{
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$csv .= "\r\n";
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}
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$csv .= "- ".str_replace('"', '\'', $g["name"]);
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}
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}
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$csv .= "\"";
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$filled = true;
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break;
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}
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$ct++;
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}
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}
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}
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if(!$filled) {
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$csv .= ",\"\"";
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}
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}
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$csv .= "\r\n";
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}
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}
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return [ "format" => "text/csv", "content" => $csv];
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}
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public function export_studylines(){
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$model = $this->export_studylines_model();
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$json = json_encode([
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"type"=>"studylines",
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"version"=>1.0,
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"studylines"=>$model,
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],\JSON_PRETTY_PRINT);
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return [ "format" => "application/json", "content" => $json];
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}
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public function export_model()
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{
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$model = [
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'fullname' => $this->r->name,
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'shortname' => $this->r->shortname,
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'description' => $this->r->description,
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'periods' => $this->r->periods,
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'startdate' => $this->r->startdate,
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'enddate' => $this->r->enddate,
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'studylines' => $this->export_studylines_model(),
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];
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return $model;
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}
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public function export_studylines_model()
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{
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$children = studyline::find_page_children($this);
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$lines = [];
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foreach($children as $c)
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{
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$lines[] = $c->export_model();
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}
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return $lines;
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}
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public function import_studylines($content,$format="application/json")
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{
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if($format != "application/json") { return false;}
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$content = json_decode($content,true);
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if($content["type"] == "studylines" && $content["version"] >= 2.0){
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return $this->import_studylines_model($content["studylines"]);
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}
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else if($content["type"] == "studyplanpage" && $content["version"] >= 2.0){
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return $this->import_studylines_model($content["page"]["studylines"]);
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}
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else {
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return false;
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}
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}
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protected function find_studyline_by_shortname($shortname){
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$children = studyline::find_page_children($this);
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foreach($children as $l){
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if($shortname == $l->shortname()){
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return $l;
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}
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}
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return null;
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}
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public function import_studylines_model($model)
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{
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|
// First attempt to map each studyline model to an existing or new line
|
|
$line_map = [];
|
|
foreach($model as $ix => $linemodel){
|
|
$line = $this->find_studyline_by_shortname($linemodel["shortname"]);
|
|
if(empty($line)){
|
|
$linemodel["studyplan_id"] = $this->id;
|
|
$line = studyline::add($linemodel);
|
|
} else {
|
|
//$line->edit($linemodel); // Update the line with the settings from the imported file
|
|
}
|
|
$line_map[$ix] = $line;
|
|
}
|
|
|
|
// next, let each study line import the study items
|
|
$itemtranslation = [];
|
|
$connections = [];
|
|
foreach($model as $ix => $linemodel){
|
|
$line_map[$ix]->import_studyitems($linemodel["slots"],$itemtranslation,$connections);
|
|
}
|
|
|
|
// Finally, create the links between the study items
|
|
foreach($connections as $from => $dests){
|
|
foreach($dests as $to){
|
|
studyitemconnection::connect($from,$itemtranslation[$to]);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
} |