moodle_local_treestudyplan/classes/period.php

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2023-07-27 15:49:59 +02:00
<?php
namespace local_treestudyplan;
require_once($CFG->libdir.'/externallib.php');
class period {
const TABLE = "local_treestudyplan_period";
private static $CACHE = [];
private $r; // Holds database record
private $id;
private $page;
public function aggregator(){
return $this->studyplan->aggregator();
}
// Cache constructors to avoid multiple creation events in one session.
public static function findById($id): self {
if(!array_key_exists($id,self::$CACHE)){
self::$CACHE[$id] = new self($id);
}
return self::$CACHE[$id];
}
private function __construct($id) {
global $DB;
$this->id = $id;
$this->r = $DB->get_record(self::TABLE,['id' => $id]);
$this->page = studyplanpage::findById($this->r->page_id);
}
public function id(){
return $this->id;
}
public function studyplan() : studyplan {
return $this->page->studyplan();
}
public function page(){
return $this->page;
}
public function shortname(){
return $this->r->shortname;
}
public function fullname(){
return $this->r->fullname;
}
public function period(){
return $this->r->period;
}
public function startdate(){
return new \DateTime($this->r->startdate);
}
public function enddate(){
if($this->r->enddate && strlen($this->r->enddate) > 0){
return new \DateTime($this->r->enddate);
}
else{
// return a date 100 years into the future
return (new \DateTime($this->r->startdate))->add(new \DateInterval("P100Y"));
}
}
public static function simple_structure($value=VALUE_REQUIRED){
return new \external_single_structure([
"id" => new \external_value(PARAM_INT, 'id of studyplan page'),
"fullname" => new \external_value(PARAM_TEXT, 'name of studyplan page'),
"shortname"=> new \external_value(PARAM_TEXT, 'shortname of studyplan page'),
"period" => new \external_value(PARAM_INT, 'period sequence'),
"startdate" => new \external_value(PARAM_TEXT, 'start date of studyplan'),
"enddate" => new \external_value(PARAM_TEXT, 'end date of studyplan'),
],'Studyplan page basic info',$value);
}
public function simple_model(){
return [
'id' => $this->r->id,
'fullname' => $this->r->fullname,
'shortname' => $this->r->shortname,
'period' => $this->r->period,
'startdate' => $this->r->startdate,
'enddate' => $this->r->enddate,
];
}
public static function add($fields){
global $CFG, $DB;
if(!isset($fields['page_id'])){
throw new \InvalidArgumentException("parameter 'studyplan_id' missing");
}
$addable = ['page_id','fullname','shortname','description','periods','startdate','enddate'];
$info = ['enddate' => null ];
foreach($addable as $f){
if(array_key_exists($f,$fields)){
$info[$f] = $fields[$f];
}
}
$id = $DB->insert_record(self::TABLE, $info);
return self::findById($id); // make sure the new page is immediately cached
}
public function edit($fields){
global $DB;
$editable = ['fullname','shortname','description','periods','startdate','enddate'];
$info = ['id' => $this->id,];
foreach($editable as $f){
if(array_key_exists($f,$fields)){
$info[$f] = $fields[$f];
}
}
$DB->update_record(self::TABLE, $info);
//reload record after edit
$this->r = $DB->get_record(self::TABLE,['id' => $this->id],"*",MUST_EXIST);
return $this;
}
public function delete($force=false){
global $DB;
$DB->delete_records(self::TABLE, ['id' => $this->id]);
return success::success();
}
}
public static function user_structure($value=VALUE_REQUIRED){
return new \external_single_structure([
"id" => new \external_value(PARAM_INT, 'id of studyplan page'),
"fullname" => new \external_value(PARAM_TEXT, 'name of studyplan page'),
"shortname"=> new \external_value(PARAM_TEXT, 'shortname of studyplan page'),
"description"=> new \external_value(PARAM_TEXT, 'description of studyplan page'),
"periods" => new \external_value(PARAM_INT, 'number of slots in studyplan page'),
"startdate" => new \external_value(PARAM_TEXT, 'start date of studyplan page'),
"enddate" => new \external_value(PARAM_TEXT, 'end date of studyplan page'),
"studylines" => new \external_multiple_structure(studyline::user_structure()),
],'Studyplan page with user info',$value);
}
public function user_model($userid){
$model = [
'id' => $this->r->id,
'fullname' => $this->r->fullname,
'shortname' => $this->r->shortname,
'description' => $this->r->description,
'periods' => $this->r->periods,
'startdate' => $this->r->startdate,
'enddate' => $this->r->enddate,
'studylines' => [],
];
$children = studyline::find_page_children($this);
foreach($children as $c)
{
$model['studylines'][] = $c->user_model($userid);
}
return $model;
}
public static function find_studyplan_children(studyplan $plan)
{
global $DB;
$list = [];
$ids = $DB->get_fieldset_select(self::TABLE,"id","studyplan_id = :plan_id ORDER BY startdate",
['plan_id' => $plan->id()]);
foreach($ids as $id) {
$list[] = self::findById($id);
}
return $list;
}
public static function duplicate_page($page_id,$name,$shortname)
{
$ori = self::findById($page_id);
$new = $ori->duplicate($name,$shortname);
return $new->simple_model();
}
public function duplicate($name,$shortname)
{
// First duplicate the studyplan structure
$new = studyplanpage::add([
'fullname' => $name,
'shortname' => $shortname,
'description' => $this->r->description,
'pages' => $this->r->pages,
'startdate' => $this->r->startdate,
'enddate' => empty($this->r->enddate)?null:$this->r->enddate,
]);
// next, copy the studylines
$children = studyline::find_page_children($this);
$itemtranslation = [];
$linetranslation = [];
foreach($children as $c){
$newchild = $c->duplicate($this,$itemtranslation);
$linetranslation[$c->id()] = $newchild->id();
}
// now the itemtranslation array contains all of the old child id's as keys and all of the related new ids as values
// (feature of the studyline::duplicate function)
// use this to recreate the lines in the new plan
foreach(array_keys($itemtranslation) as $item_id){
// copy based on the outgoing connections of each item, to avoid duplicates
$connections = studyitemconnection::find_outgoing($item_id);
foreach($connections as $conn){
studyitemconnection::connect($itemtranslation[$conn->from_id],$itemtranslation[$conn->to_id]);
}
}
return $new;
}
public static function export_structure()
{
return new \external_single_structure([
"format" => new \external_value(PARAM_TEXT, 'format of studyplan export'),
"content"=> new \external_value(PARAM_TEXT, 'exported studyplan content'),
],'Exported studyplan');
}
public function export_page()
{
$model = $this->export_model();
$json = json_encode([
"type"=>"studyplanpage",
"version"=>2.0,
"page"=>$model
],\JSON_PRETTY_PRINT);
return [ "format" => "application/json", "content" => $json];
}
public function export_page_csv()
{
//TODO: Period shortnames instead of just P1, P2, P3 etc
$model = $this->editor_model();
$slots = intval($model["slots"]);
// First line
$csv = "\"Studyline[{$slots}]\"";
for($i = 1; $i <= $slots; $i++){
$csv .= ",\"P{$i}\"";
}
$csv .= "\r\n";
// next, make one line per studyline
foreach($model["studylines"] as $line){
// determine how many fields are simultaneous in the line at maximum
$maxlines = 1;
for($i = 1; $i <= $slots; $i++){
if(count($line["slots"]) > $i){
$ct = 0;
foreach($line["slots"][$i][studyline::SLOTSET_COMPETENCY] as $itm){
if($itm["type"] == "course"){
$ct += 1;
}
}
if($ct > $maxlines){
$maxlines = $ct;
}
}
}
for($lct = 0; $lct < $maxlines; $lct++){
$csv .= "\"{$line["name"]}\"";
for($i = 1; $i <= $slots; $i++){
$filled = false;
if(count($line["slots"]) > $i){
$ct = 0;
foreach($line["slots"][$i][studyline::SLOTSET_COMPETENCY] as $itm){
if($itm["type"] == "course"){
if($ct == $lct){
$csv .= ",\"";
$csv .= $itm["course"]["fullname"];
$csv .= "\r\n";
$first = true;
foreach($itm["course"]["grades"] as $g){
if($g["selected"]){
if($first){
$first = false;
}
else{
$csv .= "\r\n";
}
$csv .= "- ".str_replace('"', '\'', $g["name"]);
}
}
$csv .= "\"";
$filled = true;
break;
}
$ct++;
}
}
}
if(!$filled) {
$csv .= ",\"\"";
}
}
$csv .= "\r\n";
}
}
return [ "format" => "text/csv", "content" => $csv];
}
public function export_studylines(){
$model = $this->export_studylines_model();
$json = json_encode([
"type"=>"studylines",
"version"=>1.0,
"studylines"=>$model,
],\JSON_PRETTY_PRINT);
return [ "format" => "application/json", "content" => $json];
}
public function export_model()
{
$model = [
'fullname' => $this->r->name,
'shortname' => $this->r->shortname,
'description' => $this->r->description,
'periods' => $this->r->periods,
'startdate' => $this->r->startdate,
'enddate' => $this->r->enddate,
'studylines' => $this->export_studylines_model(),
];
return $model;
}
public function export_studylines_model()
{
$children = studyline::find_page_children($this);
$lines = [];
foreach($children as $c)
{
$lines[] = $c->export_model();
}
return $lines;
}
public function import_studylines($content,$format="application/json")
{
if($format != "application/json") { return false;}
$content = json_decode($content,true);
if($content["type"] == "studylines" && $content["version"] >= 2.0){
return $this->import_studylines_model($content["studylines"]);
}
else if($content["type"] == "studyplanpage" && $content["version"] >= 2.0){
return $this->import_studylines_model($content["page"]["studylines"]);
}
else {
return false;
}
}
protected function find_studyline_by_shortname($shortname){
$children = studyline::find_page_children($this);
foreach($children as $l){
if($shortname == $l->shortname()){
return $l;
}
}
return null;
}
public function import_studylines_model($model)
{
// 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;
}
}