<?php

declare(strict_types=1);

/**
 * Fill empty seotitle/seometa product fields from a scraped mapping file
 * (migrations/seo_meta_vitec.json - source: the live vitec.com product
 * pages, 2026-09-04). Fill-up ONLY: fields that already hold a value are
 * never overwritten.
 *
 * Dry run:  php migrations/apply_seo_meta.php
 * Write:    php migrations/apply_seo_meta.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");
}

$map = json_decode((string)file_get_contents(__DIR__ . '/seo_meta_vitec.json'), true);
if (!is_array($map)) {
    exit("seo_meta_vitec.json missing or invalid.\n");
}
unset($map['_quelle']);

$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]
);

$select = $pdo->prepare("SELECT uid, title, seotitle, seometa FROM tx_vitec_domain_model_product WHERE deleted = 0 AND slug = ?");
$update = $pdo->prepare("UPDATE tx_vitec_domain_model_product SET seotitle = ?, seometa = ?, tstamp = ? WHERE uid = ?");

$written = 0;
foreach ($map as $slug => $meta) {
    $select->execute([$slug]);
    $product = $select->fetch();
    if (!$product) {
        echo "FEHLT  $slug - kein Produkt\n";
        continue;
    }
    $newTitle = trim((string)$product['seotitle']) === '' ? trim((string)($meta['seotitle'] ?? '')) : (string)$product['seotitle'];
    $newMeta = trim((string)$product['seometa']) === '' ? trim((string)($meta['seometa'] ?? '')) : (string)$product['seometa'];
    $changes = [];
    if ($newTitle !== (string)$product['seotitle']) {
        $changes[] = 'seotitle';
    }
    if ($newMeta !== (string)$product['seometa']) {
        $changes[] = 'seometa';
    }
    if ($changes === []) {
        echo "ok     {$product['title']} - beide Felder bereits gefuellt oder keine Daten\n";
        continue;
    }
    printf("%s %s (uid %d): %s\n", $apply ? 'WRITE ' : 'plan  ', $product['title'], $product['uid'], implode(' + ', $changes));
    if ($apply) {
        $update->execute([$newTitle, $newMeta, time(), (int)$product['uid']]);
    }
    $written++;
}
printf("\n%d Produkt(e) %s.%s\n", $written, $apply ? 'geschrieben' : 'geplant', $apply ? ' Cache leeren: vendor/bin/typo3 cache:flush' : ' Mit --apply schreiben.');