<?php

declare(strict_types=1);

/**
 * Move the parenthetical descriptor out of product titles into `subtitle`
 * (decision 2026-09-04): "MGW Diamond-H (HDMI encoder)" becomes
 * title "MGW Diamond-H" + subtitle "HDMI encoder".
 *
 * Rules:
 *   - only titles ENDING in "(...)" are touched; slugs stay as they are
 *   - subtitle empty            -> descriptor moves there, title is stripped
 *   - subtitle == descriptor    -> title is stripped (subtitle already right)
 *   - subtitle holds other text -> SKIPPED and reported, nothing changes
 *
 * Dry run by default:  php migrations/split_title_descriptors.php
 * Write:               php migrations/split_title_descriptors.php --apply
 */

$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]
);

$products = $pdo->query(
    "SELECT uid, title, subtitle FROM tx_vitec_domain_model_product WHERE deleted = 0 ORDER BY title"
)->fetchAll();

$stmt = $pdo->prepare(
    "UPDATE tx_vitec_domain_model_product SET title = ?, subtitle = ?, tstamp = ? WHERE uid = ?"
);

$changed = 0;
$skipped = 0;
foreach ($products as $product) {
    if (!preg_match('/^(.*\S)\s*\((.+)\)$/u', trim((string)$product['title']), $m)) {
        continue;
    }
    $newTitle = $m[1];
    $descriptor = trim($m[2]);
    $subtitle = trim((string)$product['subtitle']);

    if ($subtitle !== '' && $subtitle !== $descriptor) {
        printf("SKIP  %3d | %s -- subtitle belegt: \"%s\" (Deskriptor waere: \"%s\")\n",
            $product['uid'], $product['title'], $subtitle, $descriptor);
        $skipped++;
        continue;
    }

    printf("%s %3d | \"%s\"  ->  title \"%s\" | subtitle \"%s\"\n",
        $apply ? 'WRITE' : 'plan ', $product['uid'], $product['title'], $newTitle, $descriptor);
    if ($apply) {
        $stmt->execute([$newTitle, $descriptor, time(), (int)$product['uid']]);
    }
    $changed++;
}

printf("\n%d %s, %d skipped.%s\n",
    $changed,
    $apply ? 'written' : 'planned',
    $skipped,
    $apply ? ' Flush the cache: vendor/bin/typo3 cache:flush' : ' Run again with --apply to write.'
);