<?php

declare(strict_types=1);

/**
 * One-time rebuild of tx_vitec_product_related_text (2026-09-28).
 *
 * The table stored the per-pair related-product card copy with a composite
 * primary key and no uid/pid - fine for the import module, invisible to
 * FormEngine. To surface the texts as an inline list on the product record
 * the table needs a proper uid PK and a pid, and MySQL cannot grow an
 * auto_increment PK onto an existing composite-key table through the TYPO3
 * schema compare - hence this manual rebuild.
 *
 * Copies every row, backfilling:
 *   pid     = the owning product's pid
 *   sorting = the pair's tx_vitec_product_related_mm sorting (0 when the
 *             relation has meanwhile been removed - such orphan texts are
 *             kept; they become active again if the relation returns)
 *   crdate  = old tstamp
 *
 * Idempotent: exits when the uid column already exists.
 *
 * Usage:  php migrations/rebuild_related_text_table.php
 *         (BEFORE vendor/bin/typo3 extension:setup)
 */

$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]
);

$table = 'tx_vitec_product_related_text';

$cols = $pdo->query('SHOW COLUMNS FROM `' . $table . '`')->fetchAll();
$names = array_column($cols, 'Field');
if (in_array('uid', $names, true)) {
    exit("$table already has a uid column - nothing to do.\n");
}

$count = (int)$pdo->query('SELECT COUNT(*) FROM `' . $table . '`')->fetchColumn();
echo "Rebuilding $table ($count rows) ...\n";

$pdo->exec('DROP TABLE IF EXISTS `' . $table . '_new`');
$pdo->exec('CREATE TABLE `' . $table . '_new` (
    uid int(11) NOT NULL auto_increment,
    pid int(11) DEFAULT 0 NOT NULL,
    product_uid int(11) DEFAULT 0 NOT NULL,
    related_uid int(11) DEFAULT 0 NOT NULL,
    sorting int(11) DEFAULT 0 NOT NULL,
    cardtext text,
    tstamp int(11) DEFAULT 0 NOT NULL,
    crdate int(11) DEFAULT 0 NOT NULL,
    PRIMARY KEY (uid),
    UNIQUE KEY pair (product_uid, related_uid)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4');

$copied = $pdo->exec('INSERT INTO `' . $table . '_new`
        (pid, product_uid, related_uid, sorting, cardtext, tstamp, crdate)
    SELECT COALESCE(p.pid, 0), t.product_uid, t.related_uid,
           COALESCE(mm.sorting, 0), t.cardtext, t.tstamp, t.tstamp
    FROM `' . $table . '` t
    LEFT JOIN tx_vitec_domain_model_product p ON p.uid = t.product_uid
    LEFT JOIN tx_vitec_product_related_mm mm
        ON mm.uid_local = t.product_uid AND mm.uid_foreign = t.related_uid');

$pdo->exec('RENAME TABLE `' . $table . '` TO `' . $table . '_old`, `' . $table . '_new` TO `' . $table . '`');
$pdo->exec('DROP TABLE `' . $table . '_old`');

echo "Done: $copied rows copied, old table dropped.\n";
echo "Next: vendor/bin/typo3 extension:setup && vendor/bin/typo3 cache:flush\n";