blue-twilight/public/bootstrap/src/Bootstrapper.php

<?php

namespace AppBootstrap;

use App\Services\GiteaService;

/**
 * This class handles the downloading and extracting of the vendors directory.
 * Because Laravel and other vendors are not yet available, it uses "raw" PHP and the odd few classes within Blue
 * Twilight, such as GiteaService.
 *
 * @package AppBootstrap
 */
class Bootstrapper
{
    private $configDir;
    private $rootDir;
    private $tempDir;
    private $viewsDir;

    public function __construct()
    {
        $this->rootDir = dirname(__DIR__);
        $this->configDir = sprintf('%s/config', dirname(dirname($this->rootDir)));
        $this->tempDir = sprintf('%s/temp', $this->rootDir);
        $this->viewsDir = sprintf('%s/views', $this->rootDir);
    }

    public function handleRequest()
    {
        if (!isset($_GET['act']))
        {
            $this->view('index', ['appName' => 'Blue Twilight Bootstrapper']);
        }
        else
        {
            switch (trim($_GET['act']))
            {
                case 'download':
                    $this->download();
                    return;

                default:
                    throw new \Exception(sprintf('ERROR: Action \'%s\' was not recognised.', $_GET['act']));
            }
        }
    }

    private function download()
    {
        $appConfig = require_once sprintf('%s/app.php', $this->configDir);
        $servicesConfig = require_once sprintf('%s/services.php', $this->configDir);

        $versionNumber = sprintf('v%s', $appConfig['version']);

        $gitea = new GiteaService($servicesConfig['gitea'], $versionNumber);
        $releaseInfo = $gitea->getSpecificRelease($versionNumber);

        if (is_null($releaseInfo))
        {
            throw new \Exception(sprintf('No release info found in Gitea for Blue Twilight version \'%\'', $versionNumber));
        }
        else if (!isset($releaseInfo->assets))
        {
            throw new \Exception(sprintf('No assets found in Gitea for Blue Twilight version \'%\'', $versionNumber));
        }

        $vendorsPrefix = 'vendors';
        $vendorsSuffix = '.tar.gz';
        $selectedAsset = null;
        foreach ($releaseInfo->assets as $asset)
        {
            /*
                Ignore anything that is not "vendors<something>.tar.gz" were the <something> is also optional - e.g.
                vendors_2.1.2.tar.gz
                vendors.tar.gz
                but NOT 2.1.2_vendors.zip
            */
            if (!starts_with($asset->name, $vendorsPrefix) || !ends_with($asset->name, $vendorsSuffix))
            {
                continue;
            }

            $selectedAsset = $asset;
            break;
        }

        if (is_null($selectedAsset))
        {
            throw new \Exception('No vendors.tar.gz found in Gitea for Blue Twilight version \'%\'', $versionNumber);
        }

        $targetFileName = sprintf('%s/vendors.tar.gz', $this->tempDir);

        $this->downloadFile($selectedAsset->browser_download_url, $targetFileName);
        var_dump('done');
    }

    private function downloadFile($sourceURL, $targetFilename)
    {
        $urlHandle = @fopen($sourceURL, 'r');
        $tempFilename = @fopen($targetFilename, 'w');

        if ($urlHandle === false)
        {
            throw new \Exception(sprintf('Failed downloading the file from %s', $sourceURL));
        }
        else if ($tempFilename === false)
        {
            throw new \Exception(sprintf('Failed opening the file \'%s\' for writing', $targetFilename));
        }

        while (!feof($urlHandle))
        {
            $buffer = fread($urlHandle, 8192);
            fwrite($tempFilename, $buffer);
        }

        @fclose($urlHandle);
        @fclose($tempFilename);
    }

    private function view($name, array $viewData = [])
    {
        $viewFile = sprintf('%s/%s.php', $this->viewsDir, $name);
        if (!file_exists($viewFile) || !is_readable($viewFile))
        {
            throw new \Exception(sprintf('ERROR: View file \'%s\' does not exist.', $viewFile));
        }

        // Provide keys as variables - e.g. $viewData['something'] becomes accessible via $something
        extract($viewData);

        require_once $viewFile;
    }
}