Spik-en-span/php/get_ticket_details.php

<?php
header('Content-Type: application/json');

$servername = "localhost";
$username = "database12";
$password = "181t$1lJg";
$dbname = "spik_en_span";

$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
    echo json_encode(['success' => false, 'message' => 'Databaseverbinding mislukt.']);
    exit();
}

$ticket_id = isset($_GET['ticket_id']) ? trim($_GET['ticket_id']) : '';

if (empty($ticket_id)) {
    echo json_encode(['success' => false, 'message' => 'Geen ticket ID opgegeven.']);
    exit();
}

$sql = "SELECT ticket_id, category, day FROM tickets WHERE ticket_id = ?";
$stmt = $conn->prepare($sql);
$stmt->bind_param("s", $ticket_id);
$stmt->execute();
$result = $stmt->get_result();

if ($result->num_rows > 0) {
    $ticket = $result->fetch_assoc();

    $checkScannedSql = "SELECT id FROM scanned_tickets WHERE ticket_id = ?";
    $checkStmt = $conn->prepare($checkScannedSql);
    $checkStmt->bind_param("s", $ticket_id);
    $checkStmt->execute();
    $checkResult = $checkStmt->get_result();

    if ($checkResult->num_rows > 0) {
        echo json_encode(['success' => false, 'message' => 'Ticket al gescanned.']);
    } else {
        $insertScannedSql = "INSERT INTO scanned_tickets (ticket_id, is_valid) VALUES (?, ?)";
        $insertStmt = $conn->prepare($insertScannedSql);
        $is_valid = true;
        $insertStmt->bind_param("si", $ticket_id, $is_valid);

        if ($insertStmt->execute()) {
            echo json_encode([
                'success' => true,
                'ticket_id' => $ticket['ticket_id'],
                'category' => $ticket['category'],
                'day' => $ticket['day']
            ]);
        } else {
            echo json_encode(['success' => false, 'message' => 'Fout bij het opslaan van het gescande ticket.']);
        }

        $insertStmt->close();
    }

    $checkStmt->close();
} else {
    echo json_encode(['success' => false, 'message' => 'Ticket niet gevonden.']);
}

$stmt->close();
$conn->close();
?>