KantSites/scripts/build-release.php

<?php

/**
 * Builds a release archive that runs on hosting without Composer.
 *
 * Umut is right: shared hosting usually has no Composer. A release therefore has to carry
 * `vendor/` with it, and that folder has to be built by somebody - here, on a machine that does
 * have Composer. The archive is what `install.php` downloads and what a host without Composer
 * unpacks; the Git repository stays free of `vendor/`.
 *
 * Run: php scripts/build-release.php [--out=var/releases]
 *
 * The script refuses to build rather than produce something misleading: without Composer there is
 * no way to get a dependency tree without development packages, and shipping the development one
 * would mean an archive with PHPUnit in it.
 */
$root = dirname(__DIR__);
$options = getopt('', ['out::', 'keep-dev']);
$outDirectory = $root.'/'.trim($options['out'] ?? 'var/releases', '/');
$version = trim((string) file_get_contents($root.'/VERSION'));
if (1 !== preg_match('/^\d+\.\d+\.\d+$/D', $version)) {
    fwrite(STDERR, "VERSION enthält keine Fassung der Form 1.2.3.\n");
    exit(1);
}

/** Runs a command and returns [ok, output]; the shell is used because this is a build tool. */
$run = static function (string $command) use ($root): array {
    $output = [];
    $status = 0;
    exec('cd '.escapeshellarg($root).' && '.$command.' 2>&1', $output, $status);

    return [0 === $status, implode("\n", $output)];
};

// Composer, in the order that works on a developer machine.
$composer = null;
foreach (['php '.escapeshellarg($root.'/composer.phar'), 'composer'] as $candidate) {
    [$ok] = $run($candidate.' --version');
    if ($ok) {
        $composer = $candidate;
        break;
    }
}
if (null === $composer) {
    fwrite(STDERR, "Composer ist auf diesem Rechner nicht aufrufbar.\n");
    fwrite(STDERR, "Ein Release wird auf einem Build-Rechner gebaut, nicht auf dem Hosting - genau deshalb gibt es dieses Skript.\n");
    exit(1);
}

$staging = $outDirectory.'/kantsites-'.$version;
$archive = $outDirectory.'/kantsites-'.$version.'.zip';
if (is_dir($staging) || is_file($archive)) {
    fwrite(STDERR, sprintf("Für Fassung %s gibt es schon ein Release. Erst entfernen oder VERSION erhöhen.\n", $version));
    exit(1);
}
if (!is_dir($outDirectory) && !mkdir($outDirectory, 0o775, true)) {
    fwrite(STDERR, sprintf("%s ließ sich nicht anlegen.\n", $outDirectory));
    exit(1);
}

echo "Fassung {$version}\n";

// What belongs into a release: the application, and nothing that only a developer needs.
$include = ['bin', 'config', 'migrations', 'public', 'src', 'templates', 'composer.json', 'composer.lock', 'VERSION', 'README.md', 'LICENSE', '.env.example'];
$skip = ['.git', '.github', 'node_modules', 'var', 'tests', 'scripts', 'reports', 'phpunit.xml.dist', '.php-cs-fixer.dist.php', 'package.json', 'package-lock.json'];

$copy = static function (string $from, string $to) use (&$copy, $skip): int {
    $count = 0;
    if (is_file($from)) {
        @mkdir(dirname($to), 0o775, true);

        return @copy($from, $to) ? 1 : 0;
    }
    foreach (scandir($from) ?: [] as $entry) {
        if ('.' === $entry || '..' === $entry || in_array($entry, $skip, true)) {
            continue;
        }
        $count += $copy($from.'/'.$entry, $to.'/'.$entry);
    }

    return $count;
};

$files = 0;
foreach ($include as $entry) {
    if (file_exists($root.'/'.$entry)) {
        $files += $copy($root.'/'.$entry, $staging.'/'.$entry);
    }
}
echo "Quelldateien: {$files}\n";

// The dependencies, without the development ones - that is the whole point of building here.
$flags = isset($options['keep-dev']) ? '' : ' --no-dev';
[$ok, $output] = $run(sprintf(
    '%s install%s --optimize-autoloader --no-interaction --no-progress --working-dir=%s',
    $composer,
    $flags,
    escapeshellarg($staging),
));
if (!$ok) {
    fwrite(STDERR, "composer install ist gescheitert:\n".$output."\n");
    exit(1);
}
echo "vendor/ gebaut".($flags ? ' ohne Entwicklungspakete' : ' MIT Entwicklungspaketen')."\n";

// The environment file is not part of a release: it holds the secret of one installation.
foreach (['.env.local', '.env.prod.local'] as $secret) {
    if (is_file($staging.'/'.$secret)) {
        unlink($staging.'/'.$secret);
    }
}

if (!class_exists(ZipArchive::class)) {
    fwrite(STDERR, "Die PHP-Erweiterung zip fehlt; ohne sie lässt sich kein Archiv schreiben.\n");
    exit(1);
}
$zip = new ZipArchive();
if (true !== $zip->open($archive, ZipArchive::CREATE | ZipArchive::OVERWRITE)) {
    fwrite(STDERR, "Archiv ließ sich nicht anlegen.\n");
    exit(1);
}
$entries = 0;
$iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($staging, FilesystemIterator::SKIP_DOTS));
foreach ($iterator as $file) {
    if ($file->isFile()) {
        // Paths inside the archive start with the version folder, so unpacking never scatters
        // files across an existing installation.
        $zip->addFile($file->getPathname(), 'kantsites-'.$version.'/'.str_replace('\\', '/', substr($file->getPathname(), strlen($staging) + 1)));
        ++$entries;
    }
}
$zip->close();

$hash = hash_file('sha256', $archive);
file_put_contents($archive.'.sha256', $hash.'  '.basename($archive)."\n");

printf("\nArchiv: %s\n", $archive);
printf("Dateien: %d, Größe: %.1f MB\n", $entries, filesize($archive) / 1048576);
printf("SHA-256: %s\n", $hash);
echo "\nDie Prüfsumme gehört in install.php, damit ein manipuliertes Archiv nicht entpackt wird.\n";