openvk/Web/Themes/Themepacks.php

<?php

declare(strict_types=1);

namespace openvk\Web\Themes;

use Nette\InvalidStateException as ISE;
use Chandler\Session\Session;
use Chandler\Patterns\TSimpleSingleton;

class Themepacks implements \ArrayAccess {

    const THEMPACK_ENGINE_VERSION = 1;
    const DEFAULT_THEME_ID = "ovk"; # блин было бы смешно если было бы Fore, потому что Лунка, а Luna это название дефолт темы винхп

    private $loadedThemepacks = [];

    function __construct() {
        foreach (glob(OPENVK_ROOT . "/themepacks/*", GLOB_ONLYDIR) as $themeDir) {
            try {
                $theme = Themepack::themepackFromDir($themeDir);
                $tid = $theme->getId();
                if (isset($this->loadedThemepacks[$tid]))
                    trigger_error("Duplicate theme $tid found at $themeDir, skipping...", E_USER_WARNING);
                else
                    $this->loadedThemepacks[$tid] = $theme;
            } catch (\Exception $e) {
                trigger_error("Could not load theme at $themeDir, skipping...", E_USER_WARNING);
            }
        }
    }

    private function installUnpacked(string $path): bool {
        try {
            $theme = Themepack::themepackFromDir($path);
            $tid = $theme->getId();
            if (isset($this->loadedThemepacks[$tid]))
                return false;

            rename($path, OPENVK_ROOT . "/themepacks/$tid");
            $this->loadedThemepacks[$tid] = $theme;
            return true;
        } catch (\Exception $e) {
            return false;
        }
    }

    function getThemeList(): \Traversable {
        foreach ($this->loadedThemepacks as $id => $theme)
            if ($theme->isEnabled())
                yield $id => ($theme->getName(Session::i()->get("lang", "ru")));
    }

    function getAllThemes(): array {
        return $this->loadedThemepacks;
    }

    /* ArrayAccess */

    function offsetExists($offset): bool {
        return $offset === Themepacks::DEFAULT_THEME_ID ? false : isset($this->loadedThemepacks[$offset]);
    }

    function offsetGet($offset) {
        return $this->loadedThemepacks[$offset];
    }

    function offsetSet($offset, $value): void {
        throw new ISE("Theme substitution in runtime is prohbited");
    }

    function offsetUnset($offset): void {
        $this->uninstall($offset);
    }

    /* /ArrayAccess */

    function install(string $archivePath): bool {
        if (!file_exists($archivePath))
            return false;

        $tmpDir = mkdir(tempnam(OPENVK_ROOT . "/tmp/themepack_artifacts/", "themex_"));
        try {
            $archive = new \CabArchive($archivePath);
            $archive->extract($tmpDir);

            return $this->installUnpacked($tmpDir);
        } catch (\Exception $e) {
            return false;
        } finally {
            rmdir($tmpDir);
        }
    }

    function uninstall(string $id): bool {
        if (!isset($loadedThemepacks[$id]))
            return false;

        rmdir(OPENVK_ROOT . "/themepacks/$id");
        unset($loadedThemepacks[$id]);
        return true;
    }

    use TSimpleSingleton;
} // Я рыгнул