<?php

/**
 * why_band_unwrap_20261111.php (Ticket 0106-FE, Abschnitt "alte Seiten")
 *
 * Die drei 2026-10-Kategorieseiten ohne Menueplatz tragen ihre "Why VITEC?"-
 * Karten noch als `vertical`-Karten IN vitec_cols_33_33_33-Containern
 * (wrap-cards-grid vom 27.10.). Das Frontend baut das Icon-Band (0039-BE)
 * aber nur aus `vitec_card` mit layout_variant icon_card DIREKT hinter dem
 * Intro. Entscheidung Harry 2026-11-11: diese Seiten bekommen das Band auch.
 *
 * Umbau je Seite: Intro "Why VITEC?" finden, die direkt folgenden Container
 * (nur solche, die ausschliesslich vitec_card enthalten) aufloesen - Karten
 * nach colPos 0 / tx_container_parent 0 / icon_card, leere Container soft-
 * loeschen, colPos 0 mit Stride 256 neu sortieren (Band direkt hinter dem
 * Intro, Rest in bisheriger Folge). Direktes SQL -> Auto-Purge greift NICHT:
 * danach cache:flush + vitec:ssr-purge/-warm mit den Pfaden.
 *
 *   php migrations/why_band_unwrap_20261111.php           # INSPECT (default)
 *   php migrations/why_band_unwrap_20261111.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;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]
);

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

$slugs = [
    '/products/graphics-and-multi-display',
    '/products/infrastructure-and-accessories',
    '/products/video-capture',
];

$norm = static fn(string $s): string => (string)preg_replace('/[^a-z0-9]+/', '', strtolower($s));

$done = 0;
foreach ($slugs as $slug) {
    $st = $pdo->prepare('SELECT uid, title FROM pages WHERE deleted = 0 AND slug = ? AND sys_language_uid = 0');
    $st->execute([$slug]);
    $page = $st->fetch();
    if (!$page) {
        echo "$slug: Seite NICHT gefunden - uebersprungen\n\n";
        continue;
    }
    $pid = (int)$page['uid'];

    $st = $pdo->prepare(
        'SELECT uid, CType, header, sorting, vitec_layout_variant FROM tt_content
          WHERE pid = ? AND deleted = 0 AND colPos = 0 AND sys_language_uid = 0
            AND (tx_container_parent IS NULL OR tx_container_parent = 0)
          ORDER BY sorting, uid'
    );
    $st->execute([$pid]);
    $top = $st->fetchAll();

    echo "== $slug (pid $pid) \"{$page['title']}\" - " . count($top) . " Top-Level-Elemente in colPos 0\n";

    // bereits umgebaut? (Band = Intro + direkt folgende Karten top-level)
    $whyIdx = null;
    foreach ($top as $i => $el) {
        if ($el['CType'] === 'vitec_introparagraph' && str_starts_with($norm((string)$el['header']), 'whyvitec')) {
            $whyIdx = $i;
            break;
        }
    }
    if ($whyIdx === null) {
        echo "   kein Why-VITEC-Intro gefunden - uebersprungen\n\n";
        continue;
    }
    $intro = $top[$whyIdx];
    if (isset($top[$whyIdx + 1]) && $top[$whyIdx + 1]['CType'] === 'vitec_card') {
        echo "   Band liegt bereits top-level hinter Intro #{$intro['uid']} - nichts zu tun\n\n";
        continue;
    }

    // direkt folgende Container einsammeln, solange sie nur Karten enthalten
    $containers = [];
    $cards = [];
    for ($i = $whyIdx + 1; $i < count($top); $i++) {
        $el = $top[$i];
        if (!str_starts_with((string)$el['CType'], 'vitec_cols')) {
            break;
        }
        $kids = $pdo->query(
            'SELECT uid, CType, header, colPos, sorting, vitec_layout_variant FROM tt_content
              WHERE deleted = 0 AND tx_container_parent = ' . (int)$el['uid'] . ' ORDER BY colPos, sorting, uid'
        )->fetchAll();
        $onlyCards = $kids !== [] && count(array_filter($kids, static fn(array $k): bool => $k['CType'] !== 'vitec_card')) === 0;
        if (!$onlyCards) {
            break;
        }
        $containers[] = $el;
        foreach ($kids as $k) {
            $cards[] = $k;
        }
    }
    if ($cards === []) {
        echo "   Intro #{$intro['uid']} \"{$intro['header']}\" ohne folgende Karten-Container - uebersprungen\n\n";
        continue;
    }

    printf("   Intro #%d \"%s\"\n", $intro['uid'], $intro['header']);
    printf("   %d Container (#%s) mit %d Karte(n):\n", count($containers), implode(', #', array_column($containers, 'uid')), count($cards));
    foreach ($cards as $c) {
        printf("      #%-6d %-14s \"%s\"\n", $c['uid'], (string)$c['vitec_layout_variant'], (string)$c['header']);
    }

    // neue Reihenfolge: bis Intro, dann Karten, dann Rest ohne die Container
    $containerUids = array_map('intval', array_column($containers, 'uid'));
    $newOrder = [];
    foreach ($top as $i => $el) {
        if (in_array((int)$el['uid'], $containerUids, true)) {
            continue;
        }
        $newOrder[] = ['uid' => (int)$el['uid'], 'label' => $el['CType'] . ' ' . $el['header']];
        if ($i === $whyIdx) {
            foreach ($cards as $c) {
                $newOrder[] = ['uid' => (int)$c['uid'], 'label' => 'vitec_card (icon_card) ' . $c['header']];
            }
        }
    }
    echo "   Neue Reihenfolge colPos 0:\n";
    $sorting = 0;
    foreach ($newOrder as $el) {
        $sorting += 256;
        printf("      %5d  #%-6d %s\n", $sorting, $el['uid'], $el['label']);
    }

    if ($apply) {
        $pdo->beginTransaction();
        $upCard = $pdo->prepare("UPDATE tt_content SET colPos = 0, tx_container_parent = 0, vitec_layout_variant = 'icon_card', tstamp = UNIX_TIMESTAMP() WHERE uid = ?");
        foreach ($cards as $c) {
            $upCard->execute([(int)$c['uid']]);
        }
        $pdo->exec('UPDATE tt_content SET deleted = 1, tstamp = UNIX_TIMESTAMP() WHERE uid IN (' . implode(',', $containerUids) . ')');
        $upSort = $pdo->prepare('UPDATE tt_content SET sorting = ?, tstamp = UNIX_TIMESTAMP() WHERE uid = ?');
        $sorting = 0;
        foreach ($newOrder as $el) {
            $sorting += 256;
            $upSort->execute([$sorting, $el['uid']]);
        }
        $pdo->commit();
        echo "   GESCHRIEBEN\n";
    }
    $done++;
    echo "\n";
}

echo ($apply ? 'FERTIG' : 'WUERDE') . ": $done Seite(n) umgebaut.\n";
if ($apply && $done > 0) {
    echo "Danach: vendor/bin/typo3 cache:flush && vendor/bin/typo3 vitec:ssr-purge " . implode(' ', $slugs) . " && vendor/bin/typo3 vitec:ssr-warm " . implode(' ', $slugs) . "\n";
}