Geizkragen/productpage.php

<?php include 'header.php'; ?>

<?php
// login.php

ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

session_start();

// 1) DB-Verbindung (einmal)
$servername = "localhost";
$port = 3306;
$username = "FSST";
$password = "L9wUNZZ9Qkbt";
$db = "FSST";

$conn = mysqli_connect($servername, $username, $password, $db, $port);
if (!$conn)
{
    http_response_code(500);
    die("Datenbankfehler");
}
?>

<?php
$productId = isset($_GET['id']) ? (int)$_GET['id'] : 0;
?>

<?php if ($productId <= 0): ?>
    <section class="product-section">
        <h2>Produkt nicht gefunden</h2>
        <p>Bitte eine gueltige Produkt-ID mitgeben.</p>
    </section>

<?php else: ?>
    <?php
    $stmt = $conn->prepare("
    SELECT 
        a.name,
        a.unit,
        a.dataType,
        pa.valueString,
        pa.valueNumber,
        pa.valueBool,
        p.model,
        p.description,
        p.imagePath
    FROM products p

    INNER JOIN categoryAttributes ca
        ON p.categoryID = ca.categoryID

    INNER JOIN attributes a
        ON ca.attributeID = a.attributeID

    LEFT JOIN productAttributes pa
        ON pa.productID = p.productID
        AND pa.attributeID = a.attributeID

    WHERE p.productID = ?

    ORDER BY a.attributeID
");


    $stmt->bind_param("i", $productId);
    $stmt->execute();

    $result = $stmt->get_result();
    $product = $result->fetch_assoc();
    ?>

    <?php
    $alreadyInWishlist = null;

    if (
            $_SERVER['REQUEST_METHOD'] === 'POST' &&
            isset($_POST['add_wishlist']) &&
            isset($_SESSION['user_id'])
    ) {

        $userId = (int)$_SESSION['user_id'];
        $productIdPost = (int)$_POST['product_id'];

        if ($productIdPost > 0 && $alreadyInWishlist == null) {

            $stmtFav = mysqli_prepare(
                    $conn,
                    "INSERT IGNORE INTO userFavorites (productID, userID) VALUES (?, ?)"
            );

            if ($stmtFav) {
                mysqli_stmt_bind_param($stmtFav, 'ii', $productIdPost, $userId);
                mysqli_stmt_execute($stmtFav);
                mysqli_stmt_close($stmtFav);
                $alreadyInWishlist = true;
            }
        }
    }

    ?>

    <div class="product-wrapper">
        <!-- LINKER BEREICH – BILD -->
        <div class="product-left">
            <div class="product-image-box">
                <img
                        src="<?= isset($product['imagePath']) ? $product['imagePath'] : 'assets/images/placeholder.png' ?>"
                        alt="<?= htmlspecialchars($product['model'] ?? 'Produktbild') ?>">
            </div>
            <?php if (isset($_SESSION['user_id'])): ?>

                <?php if ($alreadyInWishlist): ?>

                    <div class="auth__actions">
                        <input class="auth__submit" type="button"
                               value="Bereits in Wunschliste"
                               disabled>
                    </div>

                <?php else: ?>

                    <form method="POST">
                        <input type="hidden" name="product_id" value="<?= (int)$productId ?>">
                        <input type="hidden" name="add_wishlist" value="1">

                        <div class="auth__actions">
                            <input class="auth__submit"
                                   type="submit"
                                   value="Zur Wunschliste hinzufügen">
                        </div>
                    </form>

                <?php endif; ?>

            <?php else: ?>

                <div class="auth__actions">
                    <a href="login.php">
                        <input class="auth__submit" type="button"
                               value="Zum Hinzufügen einloggen">
                    </a>
                </div>

            <?php endif; ?>


        </div>

        <!-- RECHTER BEREICH – DETAILS -->
        <div class="product-right">

            <h1 class="product-title">
                <?= htmlspecialchars($product['model'] ?? 'Produkt') ?>
            </h1>

            <div class="product-specs">

                <div class="product-desc">
                    <?= htmlspecialchars($product['description']) ?>
                </div>


                <?php
                while ($row = $result->fetch_assoc()) {

                    echo "<p><strong>{$row['name']}:</strong> ";

                        if (!empty($row['valueString'])) echo $row['valueString'];
                        if (!empty($row['valueNumber'])) echo $row['valueNumber'] . " " . $row['unit'];
                        if (!is_null($row['valueBool'])) echo $row['valueBool'] ? "Ja" : "Nein";

                        echo "</p>";
                    }
                    ?>
            </div>
        </div>
    </div>

    <?php
        $stmt = mysqli_prepare($conn,
                "SELECT price, shippingCost, inStock, shops.name, shops.website 
                        FROM offers 
                        INNER JOIN shops ON 
                        offers.shopID = shops.shopID WHERE offers.productID = ?");

        $stmt->bind_param("i", $productId);
        $stmt->execute();
        $result = $stmt->get_result();

        $shopInfo = [];

        while ($row = $result->fetch_assoc()) {
            $shopInfo[] = $row;
        }



    ?>

    <div class="shop-offers">

        <?php if (!empty($shopInfo)): ?>

            <?php foreach ($shopInfo as $shop): ?>

                <div class="shop-line">
                    <a href="<?= htmlspecialchars($shop['website']) ?>" target="_blank">
                        <?= htmlspecialchars($shop['name']) ?>
                    </a><br>

                    Preis: <?= htmlspecialchars($shop['price']) ?> € <br>
                    Versand: <?= htmlspecialchars($shop['shippingCost']) ?> € <br>
                    Lagernd: <?= $shop['inStock'] ? "Ja" : "Nein" ?>
                </div>

            <?php endforeach; ?>

        <?php else: ?>
            <p>Keine Shops bieten dieses Produkt an.</p>
        <?php endif; ?>

    </div>

    <?php $stmt->close(); ?>

<?php endif; ?>



<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <link rel="stylesheet" href="assets/css/productpage.css">
</head>

<?php include 'footer.php'; ?>