<?php
/**
 * app/modules/floors/delete.php
 */

header('Content-Type: application/json; charset=utf-8');

if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
    http_response_code(405);
    echo json_encode(['success' => false, 'message' => 'Methode nicht erlaubt']);
    exit;
}

$id = (int)($_POST['id'] ?? $_GET['id'] ?? 0);
if ($id <= 0) {
    http_response_code(400);
    echo json_encode(['success' => false, 'message' => 'ID fehlt']);
    exit;
}

$exists = $sql->single("SELECT id FROM floors WHERE id = ?", "i", [$id]);
if (!$exists) {
    http_response_code(404);
    echo json_encode(['success' => false, 'message' => 'Stockwerk nicht gefunden']);
    exit;
}

$forceDelete = (int)($_POST['force'] ?? $_GET['force'] ?? 0) === 1;
$dependencyCounts = $sql->single(
    "SELECT
        (SELECT COUNT(*) FROM rooms WHERE floor_id = ?) AS room_count,
        (SELECT COUNT(*) FROM racks WHERE floor_id = ?) AS rack_count,
        (SELECT COUNT(*) FROM floor_patchpanels WHERE floor_id = ?) AS patchpanel_count",
    "iii",
    [$id, $id, $id]
);

$roomCount = (int)($dependencyCounts['room_count'] ?? 0);
$rackCount = (int)($dependencyCounts['rack_count'] ?? 0);
$patchpanelCount = (int)($dependencyCounts['patchpanel_count'] ?? 0);
$hasDependencies = $roomCount > 0 || $rackCount > 0 || $patchpanelCount > 0;

if ($hasDependencies && !$forceDelete) {
    $parts = [];
    if ($roomCount > 0) {
        $parts[] = $roomCount . ' Raeume';
    }
    if ($rackCount > 0) {
        $parts[] = $rackCount . ' Racks';
    }
    if ($patchpanelCount > 0) {
        $parts[] = $patchpanelCount . ' Patchpanels';
    }

    http_response_code(409);
    echo json_encode([
        'success' => false,
        'requires_force' => true,
        'message' => 'Beim Loeschen werden abhaengige Daten entfernt (' . implode(', ', $parts) . '). Fortfahren?',
        'dependencies' => [
            'rooms' => $roomCount,
            'racks' => $rackCount,
            'patchpanels' => $patchpanelCount
        ]
    ]);
    exit;
}

$rows = $sql->set("DELETE FROM floors WHERE id = ?", "i", [$id]);
if ($rows === false) {
    http_response_code(500);
    echo json_encode(['success' => false, 'message' => 'Loeschen fehlgeschlagen']);
    exit;
}

echo json_encode([
    'success' => true,
    'message' => 'Stockwerk geloescht',
    'dependencies' => [
        'rooms' => $roomCount,
        'racks' => $rackCount,
        'patchpanels' => $patchpanelCount
    ]
]);