URLBuilderToken.php

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<?php

declare(strict_types=1);

namespace ILIAS\UI;

class URLBuilderToken
{
    public const TOKEN_LENGTH = 24;
    private array $namespace;
    private string $name;
    private string $token;

    public function __construct(array $namespace, string $name)
    {
        $this->namespace = $namespace;
        $this->name = $name;
        $this->token = $this->createToken();
    }

    public function getToken(): string
    {
        return $this->token;
    }

    public function getName(): string
    {
        return implode(URLBuilder::SEPARATOR, $this->namespace) . URLBuilder::SEPARATOR . $this->name;
    }

    public function __toString(): string
    {
        return $this->getName();
    }

    private function createToken(): string
    {
        try {
            $token = bin2hex(random_bytes(self::TOKEN_LENGTH / 2));
        } catch (\Throwable $t) {
            $token = md5(uniqid((string) time(), true));
            $token = substr($token, 0, self::TOKEN_LENGTH);
        }
        return $token;
    }

    public function render(): string
    {
        $namespace = [];
        foreach ($this->namespace as $name) {
            $namespace[] = '"' . $name . '"';
        }
        $output = 'new il.UI.core.URLBuilderToken([' . implode(',', $namespace) . '], "' . $this->name . '", "' . $this->token . '")';
        return $output;
    }
}