<?php
/**
 * scan-and-fix-files.php — Scan (and optionally fix) file references to localhost/subfolder
 * Upload to your WordPress ROOT (same dir as wp-config.php). Run, then DELETE.
 *
 * Dry run (scan only): https://gerdgeorge.de/scan-and-fix-files.php?token=GG-FILES-20251001
 * Apply fixes        : https://gerdgeorge.de/scan-and-fix-files.php?token=GG-FILES-20251001&apply=1
 *
 * It will:
 *  - scan .php, .html, .css, .js for 'localhost' and '/gerdgeorge' and '/GerdGeorgeDianaBackup'
 *  - by default, just list matches with file paths and counts
 *  - with &apply=1, it will replace with https://gerdgeorge.de and make a timestamped .bak copy
 */

ini_set('display_errors', '1');
error_reporting(E_ALL);
header('Content-Type: text/plain; charset=UTF-8');

define('SCAN_TOKEN', 'GG-FILES-20251001');
if (!isset($_GET['token']) || $_GET['token'] !== SCAN_TOKEN) {
  http_response_code(403);
  exit("Forbidden. Append ?token=GG-FILES-20251001\n");
}

$apply = isset($_GET['apply']) && $_GET['apply'] == '1';
$root  = __DIR__;
$target = 'https://gerdgeorge.de';

$extensions = ['php','html','htm','css','js','json','txt'];
$excludeDirs = ['.git','node_modules','vendor','cache','cachestorage','wp-content/cache','wp-content/upgrade'];
$replacements = [
  'https://gerdgeorge.de/'        => $target.'/',
  'https://gerdgeorge.de'         => $target,
  'https://gerdgeorge.de/'       => $target.'/',
  'https://gerdgeorge.de'        => $target,
  'https://gerdgeorge.de/'  => $target.'/',
  'https://gerdgeorge.de'   => $target,
  'https://gerdgeorge.de/' => $target.'/',
  'https://gerdgeorge.de'  => $target,
  'https://gerdgeorge.de/'        => $target.'/',
  'https://gerdgeorge.de'         => $target,
  'https://gerdgeorge.de/' => $target.'/',
  'https://gerdgeorge.de'  => $target,
  'href="/'                   => 'href="/',
  'src="/'                    => 'src="/',
  'url(/'                     => 'url(/',
  'href="/'       => 'href="/',
  'src="/'        => 'src="/',
  'url(/'         => 'url(/',
  // conservative catch-all (paths only)
  '/'                         => '/',
  '/'              => '/',
];

function should_skip($path, $excludeDirs) {
  foreach ($excludeDirs as $ex) {
    if (str_contains($path, $ex)) return true;
  }
  return false;
}

function iter_files($dir, $extensions, $excludeDirs) {
  $rii = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir, FilesystemIterator::SKIP_DOTS));
  foreach ($rii as $file) {
    if ($file->isDir()) continue;
    $path = $file->getPathname();
    if (should_skip($path, $excludeDirs)) continue;
    $ext = strtolower(pathinfo($path, PATHINFO_EXTENSION));
    if (!in_array($ext, $extensions)) continue;
    yield $path;
  }
}

$totalMatches = 0;
$totalChanged = 0;
$changedFiles = [];

echo "scan-and-fix-files.php (apply=" . ($apply ? '1' : '0') . ")\n";
echo "Root: $root\n\n";

foreach (iter_files($root, $extensions, $excludeDirs) as $file) {
  $content = @file_get_contents($file);
  if ($content === false) continue;

  $orig = $content;
  $matchesInFile = 0;
  foreach ($replacements as $from => $to) {
    $count = 0;
    $content = str_replace($from, $to, $content, $count);
    $matchesInFile += $count;
  }

  if ($matchesInFile > 0) {
    $totalMatches += $matchesInFile;
    echo "[MATCH] $file — replacements (dry): $matchesInFile\n";
    if ($apply) {
      $backup = $file . '.bak-' . date('Ymd-His');
      @copy($file, $backup);
      $ok = @file_put_contents($file, $content);
      if ($ok !== false) {
        $totalChanged += $matchesInFile;
        $changedFiles[] = $file;
        echo "  -> wrote changes, backup: $backup\n";
      } else {
        echo "  !! failed to write changes\n";
      }
    }
  }
}

echo "\nSUMMARY\n";
echo "  total matches:  $totalMatches\n";
echo "  total changed:  $totalChanged\n";
echo "  files changed:  " . count($changedFiles) . "\n";

echo "\nTip: run without &apply=1 first to preview. Then run with &apply=1 to write changes.\n";
echo "Delete this file when finished.\n";