<?php

declare(strict_types=1);

/**
 * One-shot: clear the SAVED field mapping of the product-text import
 * (tx_vitec_import_mapping, model "product_xlsx") so the corrected
 * DEFAULT_MAPPING seed applies again.
 *
 * Deliberately clears ONLY the `mapping` column - the same row also stores
 * `record_aliases` (the editor's manual related-product matches), and those
 * must survive.
 *
 * Usage:  php migrations/reset_product_mapping.php
 */

$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]
);

$row = $pdo->query("SELECT uid, mapping, record_aliases FROM tx_vitec_import_mapping WHERE model = 'product_xlsx'")->fetch();
if (!$row) {
    exit("No row for model 'product_xlsx' - nothing to clear, defaults apply already.\n");
}

echo "Row uid " . $row['uid'] . "\n";
echo "  mapping (cleared) : " . ($row['mapping'] ?: '(empty)') . "\n";
echo "  aliases (KEPT)    : " . ($row['record_aliases'] ?: '(empty)') . "\n";

$pdo->prepare("UPDATE tx_vitec_import_mapping SET mapping = '', tstamp = ? WHERE model = 'product_xlsx'")
    ->execute([time()]);

echo "Done - the saved field mapping is cleared, the corrected defaults apply on the next preview.\n";