ConfigCollection.php

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<?php

declare(strict_types=1);

namespace ILIAS\Setup;

class ConfigCollection implements Config
{
    protected array $configs;

    public function __construct(array $configs)
    {
        $this->configs = $configs;
    }

    public function getConfig(string $key): Config
    {
        if (!isset($this->configs[$key])) {
            throw new \InvalidArgumentException(
                "Unknown key '$key' for Config."
            );
        }
        return $this->configs[$key];
    }

    public function maybeGetConfig(string $key): ?Config
    {
        return $this->configs[$key] ?? null;
    }

    public function getKeys(): array
    {
        return array_keys($this->configs);
    }
}