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 ContextRepository $repo;
    protected array $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;
    }
}