<?php
/**
 * Parse-only Twig linter. Checks template SYNTAX in isolation without booting
 * the framework: unknown functions/filters are stubbed as no-ops, and
 * extends/include targets are not resolved (parse does not require them).
 *
 * Usage: php scripts/twig-lint.php <file.twig> [<file.twig> ...]
 */

require __DIR__ . '/../vendor/autoload.php';

use Twig\Environment;
use Twig\Loader\ArrayLoader;
use Twig\TwigFunction;
use Twig\TwigFilter;
use Twig\Source;

$files = array_slice($argv, 1);
if (!$files) {
    fwrite(STDERR, "usage: php scripts/twig-lint.php <file.twig> ...\n");
    exit(2);
}

$twig = new Environment(new ArrayLoader([]), ['cache' => false, 'strict_variables' => false]);

// Stub any custom function/filter (custPerm, finance, etc.) so parsing doesn't
// reject them as unknown.
$twig->registerUndefinedFunctionCallback(function ($name) {
    return new TwigFunction($name, function () { return ''; });
});
$twig->registerUndefinedFilterCallback(function ($name) {
    return new TwigFilter($name, function ($v) { return $v; });
});

$fail = 0;
foreach ($files as $file) {
    $code = file_get_contents($file);
    if ($code === false) {
        fwrite(STDERR, "MISSING  $file\n");
        $fail++;
        continue;
    }
    try {
        $twig->parse($twig->tokenize(new Source($code, $file)));
        echo "OK       $file\n";
    } catch (\Twig\Error\Error $e) {
        fwrite(STDERR, "SYNTAX   $file: " . $e->getMessage() . " (line " . $e->getTemplateLine() . ")\n");
        $fail++;
    }
}

exit($fail > 0 ? 1 : 0);