<?php

/**
 * fix_overview_hero_refs.php (2026-11-03)
 *
 * Repariert die Hero-Platzhalter-Referenzen der 20 Produkt-Übersichtsseiten:
 * vitec:build-product-overviews --apply hatte die sys_file_reference-Zeilen
 * mit fieldname 'hero_bgimage' angelegt - der Content-Block vitec/herosection
 * hat aber prefixFields, die echte Spalte/der echte Fieldname ist
 * 'vitec_hero_bgimage' (das JSON streift den Praefix nur ab). Ergebnis:
 * Referenzen existieren, rendern aber nicht.
 *
 * Dieses Skript biegt die vorhandenen Referenzen um (fieldname-Update) und
 * setzt das Zaehlfeld tt_content.vitec_hero_bgimage - KEIN Neuanlegen.
 *
 *   php migrations/fix_overview_hero_refs.php           # INSPECT (default)
 *   php migrations/fix_overview_hero_refs.php --apply   # schreibt
 */

declare(strict_types=1);

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

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

echo $apply ? "APPLY\n\n" : "INSPECT - nichts wird geschrieben (--apply zum Schreiben)\n\n";

// Zielspalte muss existieren, sonst stimmt die Diagnose nicht
$col = (int)$pdo->query(
    "SELECT COUNT(*) FROM information_schema.COLUMNS
     WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'tt_content' AND COLUMN_NAME = 'vitec_hero_bgimage'"
)->fetchColumn();
echo 'tt_content.vitec_hero_bgimage vorhanden: ' . ($col > 0 ? 'ja' : 'NEIN') . "\n";
if ($col === 0) {
    echo "ABBRUCH: Zielspalte fehlt - Feldname im Content Block pruefen.\n";
    exit(1);
}

// die falsch benannten Referenzen, nur an vitec_herosection-Elementen
$refs = $pdo->query(
    "SELECT r.uid AS ref_uid, r.uid_foreign AS content_uid, r.uid_local AS file_uid,
            c.pid, c.CType, f.identifier
     FROM sys_file_reference r
     JOIN tt_content c ON c.uid = r.uid_foreign
     LEFT JOIN sys_file f ON f.uid = r.uid_local
     WHERE r.deleted = 0 AND r.tablenames = 'tt_content' AND r.fieldname = 'hero_bgimage'
       AND c.deleted = 0 AND c.CType = 'vitec_herosection'
     ORDER BY c.pid"
)->fetchAll(PDO::FETCH_ASSOC);

echo count($refs) . " Referenz(en) mit fieldname 'hero_bgimage' an vitec_herosection:\n";
foreach ($refs as $ref) {
    printf(
        "  ref #%d -> content #%d (pid %d) file %s\n",
        $ref['ref_uid'],
        $ref['content_uid'],
        $ref['pid'],
        (string)$ref['identifier']
    );
}

// Sicherheitsnetz: Elemente, die BEIDE Varianten tragen (sollte es nicht geben)
$both = $pdo->query(
    "SELECT uid_foreign FROM sys_file_reference
     WHERE deleted = 0 AND tablenames = 'tt_content' AND fieldname = 'vitec_hero_bgimage'
       AND uid_foreign IN (SELECT uid_foreign FROM sys_file_reference
                           WHERE deleted = 0 AND tablenames = 'tt_content' AND fieldname = 'hero_bgimage')"
)->fetchAll(PDO::FETCH_COLUMN);
if ($both !== []) {
    echo "ACHTUNG: Elemente mit korrekter UND falscher Referenz: " . implode(', ', $both) . " - die falschen wuerden geloescht statt umbenannt.\n";
}

if (!$apply) {
    echo "\nINSPECT-Ende.\n";
    exit(0);
}

$renamed = 0;
$deleted = 0;
foreach ($refs as $ref) {
    if (in_array((string)$ref['content_uid'], array_map('strval', $both), true)) {
        $pdo->prepare('UPDATE sys_file_reference SET deleted = 1, tstamp = ? WHERE uid = ?')
            ->execute([time(), (int)$ref['ref_uid']]);
        $deleted++;
        continue;
    }
    $pdo->prepare("UPDATE sys_file_reference SET fieldname = 'vitec_hero_bgimage', tstamp = ? WHERE uid = ?")
        ->execute([time(), (int)$ref['ref_uid']]);
    $renamed++;
}

// Zaehlfeld pro betroffenem Element nachziehen
$contentUids = array_values(array_unique(array_map(static fn(array $r): int => (int)$r['content_uid'], $refs)));
foreach ($contentUids as $uid) {
    $count = (int)$pdo->query(
        "SELECT COUNT(*) FROM sys_file_reference
         WHERE deleted = 0 AND tablenames = 'tt_content' AND fieldname = 'vitec_hero_bgimage' AND uid_foreign = " . $uid
    )->fetchColumn();
    $pdo->prepare('UPDATE tt_content SET vitec_hero_bgimage = ?, tstamp = ? WHERE uid = ?')
        ->execute([$count, time(), $uid]);
}

printf("\nFertig: %d Referenz(en) umbenannt, %d geloescht, %d Zaehlfeld(er) gesetzt.\n", $renamed, $deleted, count($contentUids));
echo "Danach: vendor/bin/typo3 cache:flush\n";