<?php

declare(strict_types=1);

/**
 * Diagnose + repair: the /events redirect answers 307 instead of 301 after
 * vitec:build-content-pages (2026-10-27). Suspicion: EXT:redirects
 * auto-created a second sys_redirect row for the slug change (TYPO3 default
 * 307) that shadows the command's own 301 row.
 *
 * Plain PDO against config/system/settings.php (pattern migrations/check_bg.php).
 *
 * Usage:  php migrations/fix_events_redirect.php          (show rows)
 *         php migrations/fix_events_redirect.php --apply  (keep ONE 301, delete the rest)
 */

error_reporting(E_ALL);
ini_set('display_errors', '1');

$apply = in_array('--apply', $argv, true);

$root = null;
$dir = __DIR__;
for ($i = 0; $i < 5; $i++) {
    if (is_file($dir . '/config/system/settings.php')) {
        $root = $dir;
        break;
    }
    $dir = dirname($dir);
}
if ($root === null) {
    exit("Could not locate project root above " . __DIR__ . "\n");
}

$settings = require $root . '/config/system/settings.php';
$db = $settings['DB']['Connections']['Default'];
$pdo = new PDO(
    sprintf('mysql:host=%s;port=%s;dbname=%s;charset=utf8mb4', $db['host'] ?? 'localhost', $db['port'] ?? 3306, $db['dbname'] ?? ''),
    $db['user'] ?? '',
    $db['password'] ?? '',
    [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION, PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC]
);

echo "=== sys_redirect rows for /events (and children) ===\n";
$rows = $pdo->query(
    "SELECT uid, deleted, source_host, source_path, target, target_statuscode, createdon, creation_type
     FROM sys_redirect WHERE source_path LIKE '/events%' ORDER BY uid"
)->fetchAll();
foreach ($rows as $r) {
    echo sprintf("  #%-5d del=%d %s %s -> %s  [%d]  creation_type=%s  created=%s\n",
        $r['uid'], $r['deleted'], $r['source_host'], $r['source_path'], $r['target'],
        $r['target_statuscode'], (string)($r['creation_type'] ?? '?'),
        date('Y-m-d H:i', (int)$r['createdon']));
}
if ($rows === []) {
    exit("  none - nothing to fix.\n");
}

$live = array_values(array_filter($rows, fn(array $r): bool => (int)$r['deleted'] === 0 && $r['source_path'] === '/events'));
if (count($live) === 0) {
    exit("\nNo live /events row - check manually.\n");
}

// keep the command's own row (source_host '*', target t3://page) as 301,
// delete every other live /events row
$keep = null;
foreach ($live as $r) {
    if ($r['source_host'] === '*' && str_starts_with((string)$r['target'], 't3://page')) {
        $keep = $r;
        break;
    }
}
$keep ??= $live[0];

echo "\nPlan: keep #{$keep['uid']} (force 301), delete " . (count($live) - 1) . " other live row(s)\n";
if (!$apply) {
    exit("DRY RUN - add --apply to write.\n");
}

$pdo->prepare('UPDATE sys_redirect SET target_statuscode = 301 WHERE uid = ?')->execute([(int)$keep['uid']]);
foreach ($live as $r) {
    if ((int)$r['uid'] !== (int)$keep['uid']) {
        $pdo->prepare('UPDATE sys_redirect SET deleted = 1 WHERE uid = ?')->execute([(int)$r['uid']]);
        echo "  deleted #{$r['uid']}\n";
    }
}
echo "Done. Flush the cache (redirects are cached), then re-test /events.\n";