ContextCollection.php

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<?php

declare(strict_types=1);
namespace ILIAS\GlobalScreen\ScreenContext\Stack;

use ILIAS\GlobalScreen\ScreenContext\ContextRepository;
use ILIAS\GlobalScreen\ScreenContext\ScreenContext;

class ContextCollection
{
    protected $repo;
    protected $stack = [];

    public function __construct(ContextRepository $context_repository)
    {
        $this->repo = $context_repository;
    }

    public function push(ScreenContext $context) : void
    {
        $this->stack[] = $context;
    }

    public function getLast() : ?ScreenContext
    {
        $last = end($this->stack);
        if ($last) {
            return $last;
        }
        return null;
    }

    public function getStack() : array
    {
        return $this->stack;
    }

    public function getStackAsArray() : array
    {
        $return = [];
        foreach ($this->stack as $item) {
            $return[] = $item->getUniqueContextIdentifier();
        }

        return $return;
    }

    public function hasMatch(ContextCollection $other_collection) : bool
    {
        $mapper = function (ScreenContext $c) : string {
            return $c->getUniqueContextIdentifier();
        };
        $mine = array_map($mapper, $this->getStack());
        $theirs = array_map($mapper, $other_collection->getStack());

        return (count(array_intersect($mine, $theirs)) > 0);
    }

    public function main() : self
    {
        $context = $this->repo->main();
        $this->push($context);

        return $this;
    }

    public function desktop() : self
    {
        $this->push($this->repo->desktop());

        return $this;
    }

    public function repository() : self
    {
        $this->push($this->repo->repository());

        return $this;
    }

    public function administration() : self
    {
        $this->push($this->repo->administration());

        return $this;
    }

    public function internal() : self
    {
        $this->push($this->repo->internal());

        return $this;
    }

    public function external() : self
    {
        $this->push($this->repo->external());

        return $this;
    }

    public function lti() : self
    {
        $this->push($this->repo->lti());
        return $this;
    }
}