class.MandatoryAssignmentsManager.php

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<?php
 
namespace ILIAS\Exercise\Assignment\Mandatory;
 
class MandatoryAssignmentsManager
{
    protected \ilObjExercise $exc;
    protected int $exc_id;
    protected \ilObjUser $user;
    protected RandomAssignmentsManager $rand_ass_manager;
    protected array $assignments;
    protected array $set_to_mandatory_assignments;
 
    public function __construct(
        \ilObjExercise $exc,
        RandomAssignmentsManager $rand_ass_manager
    ) {
        $this->exc = $exc;
        $this->exc_id = $this->exc->getId();
        $this->rand_ass_manager = $rand_ass_manager;
        $this->assignments = \ilExAssignment::getInstancesByExercise($exc->getId());
 
        $this->set_to_mandatory_assignments = array_filter($this->assignments, function ($i) {
            if ($i->getMandatory()) {
                return true;
            }
            return false;
        });
    }
 
    public function getMandatoryAssignmentsOfUser(
        int $user_id
    ): array {
        if ($this->rand_ass_manager->isActivated()) {
            return $this->rand_ass_manager->getMandatoryAssignmentsOfUser($user_id);
        }
        return array_map(function ($i) {
            return $i->getId();
        }, $this->set_to_mandatory_assignments);
    }
 
    // Is assignment mandatory for a user?
    public function isMandatoryForUser(int $ass_id, int $user_id): bool
    {
        return (in_array($ass_id, $this->getMandatoryAssignmentsOfUser($user_id)));
    }
}