<?php
// Prevent direct access to file 
defined(security_key) or exit;
// Remove product from cart, check for the URL param "remove", this is the product id, make sure it's a number and check if it's in the cart
if (isset($_GET['remove']) && is_numeric($_GET['remove']) && isset($_SESSION['cart']) && isset($_SESSION['cart'][$_GET['remove']])) {
    // Remove the product from the shopping cart
    array_splice($_SESSION['cart'], $_GET['remove'], 1);
    header('Location: ' . url('index.php?page=cart'));
    exit;
}
// Empty the cart
if (isset($_POST['emptycart']) && isset($_SESSION['cart'])) {
    // Remove all products from the shopping cart
    unset($_SESSION['cart']);
    header('Location: ' . url('index.php?page=cart'));
    exit;
}
// Update product quantities in cart if the user clicks the "Update" button on the shopping cart page
if ((isset($_POST['update']) || isset($_POST['checkout'])) && isset($_SESSION['cart'])) {
    // Iterate the post data and update quantities for every product in cart
    foreach ($_POST as $k => $v) {
        if (strpos($k, 'quantity') !== false && is_numeric($v)) {
            $id = str_replace('quantity-', '', $k);
            // abs() function will prevent minus quantity and (int) will ensure the value is an integer (number)
            $quantity = abs((int)$v);
            // Always do checks and validation
            if (is_numeric($id) && isset($_SESSION['cart'][$id]) && $quantity > 0) {
                // Update new quantity
                $_SESSION['cart'][$id]['quantity'] = $quantity;
            }
        }
    }
    // Send the user to the place order page if they click the Place Order button, also the cart should not be empty
    if (isset($_POST['checkout']) && !empty($_SESSION['cart'])) {
        header('Location: ' . url('index.php?page=checkout'));
        exit;
    }
    header('Location: ' . url('index.php?page=cart'));
    exit;
}

// Check if accessoiries are added
if (isset($_POST['product'])) {
    //VALIDATE THE INPUT FOR THE SHOPPING CART
    $payload = json_encode($_POST['product'], JSON_UNESCAPED_UNICODE);
    $product_to_cart = ioAPIv2('/v2/shopping_cart/',$payload,$clientsecret);
    $product_to_cart = json_decode($product_to_cart,true);
    // Check if the product exists (array is not empty)
    if ($product_to_cart['quantity'] > 0) {
        // Product exists in database, now we can create/update the session variable for the cart
        if (!isset($_SESSION['cart'])) {
            // Shopping cart session variable doesnt exist, create it
            $_SESSION['cart'] = [];
        }
        $cart_product = &get_cart_product($product_to_cart['id'], $product_to_cart['options']);
        if ($cart_product) {
            // Product exists in cart, update the quanity
            $cart_product['quantity'] += $quantity;
        } else {
            // Product is not in cart, add it
            $_SESSION['cart'][] =  $product_to_cart;
        }
    }
    // Prevent form resubmission...
        header('Location: ' . url('index.php?page=cart'));
        exit;     
}

// Check if samples are added
if (isset($_POST['samples'])){
    $options = $h2_cart_sample_product;
    $quantity = 1;
    $cart_product = &get_cart_product($_POST['add_product_id'], $options);

    if ($cart_product) {
    // Do no nothing
    } else {
        //remove existing product from CART
        foreach ($_SESSION['cart'] as $num => $product){
            if ($product['options'] == $h2_cart_sample_product && !empty(category_id_checkout_samples)){
                array_splice($_SESSION['cart'], $num, 1);
            }
        }
        //ADD Product to the chart
        $_SESSION['cart'][] = [
            'id' => $_POST['add_product_id'],
            'quantity' => $quantity,
            'options' => $options,
            'options_price' => $_POST['add_product_price'],
            'options_weight' => $_POST['add_product_weight'],
            'shipping_price' => 0.00
        ];
    }   
}

// Check the session variable for products in cart
$products_in_cart = isset($_SESSION['cart']) ? $_SESSION['cart'] : [];
$subtotal = 0.00;
foreach ($products_in_cart as $num => $product) {
    // Calculate the subtotal
    $subtotal += (float)$product['options_price'] * (int)$product['quantity'];
}

template_header(($shopping_cart_header ?? 'Shopping Cart'));

$view = '
<div class="cart content-wrapper">

    <h1>'.$h1_cart_name.'</h1>
    <h2 style="text-align: center;margin-top: -35px;">
                <a href="'.url(link_to_collection).'" style="text-decoration: none;color: #555555;padding: 10px 10px;font-size: 10px;">
                '.$navigation_back_to_store.'
        </a>
    </h2>

    <form id="cart-form" action="" method="post">
        <table>
            <thead>
                <tr>
                    <td colspan="2">'.$tr_product.'</td>
                    <td class="rhide"></td>
                    <td class="rhide">'.$tr_price.'</td>
                    <td>'.$tr_quantity.'</td>
                    <td>'.$tr_total.'</td>
                </tr>
            </thead>
            <tbody>';
            if (empty($products_in_cart)){
                $view .= '
                <tr>
                    <td colspan="6" style="text-align:center;">'.$cart_message_empty.'</td>
                </tr>';
            } else {
            foreach ($products_in_cart as $num => $product){

                // Ensure product price is a numeric value
                $product['options_price'] = isset($product['options_price']) && $product['options_price'] > 0 ? floatval($product['options_price']) : 0.00;

                if (isset($product['options']) && $product['options'] !=''){
                    $prod_options = '';
                    foreach ($product['options'] as $prod_opt){
                        $prod_options .= (${$prod_opt} ?? $prod_opt).', ';
                    }
                }

                $view .= '
                <tr>
                    <td class="img">';
                        if (!empty($product['meta']['img'])){
                    $view .= ' <a href="'.url('index.php?page=product&id=' . $product['id']).'">
                                <img src="'.img_url.$product['meta']['img'].'" width="50" height="50" alt="'.$product['meta']['name'].'">
                            </a>';
                        }
              $view .= '</td>
                    <td>
                        <a href="'.url('index.php?page=product&id=' . $product['id']).'">'.(${$product['meta']['name']} ?? $product['meta']['name']).'</a>
                        <br>
                        <a href="'.url('index.php?page=cart&remove=' . $num).'" class="remove">Remove</a>
                    </td>
                    <td class="options rhide">
                        '.htmlspecialchars(substr($prod_options, 0,-2), ENT_QUOTES).'
                        <input type="hidden" name="options" value="['.implode(',',$product['options']).']">
                    </td>
                    <td class="price rhide">'.currency_code.''.number_format($product['options_price'],2).'</td>';
                    
                    if ($product['options'] == $h2_cart_sample_product && !empty(category_id_checkout_samples)){

                        $view .= '
                            <td class="quantity">
                                <input type="number" class="ajax-update" name="quantity-'.$num.'" value="1" min="1" max="1" placeholder="Quantity" readonly>
                            </td>';
                       } else {
                              $view .= '
                                <td class="quantity">
                                    <input type="number" class="ajax-update" name="quantity-'.$num.'" value="'.$product['quantity'].'" min="1" placeholder="Quantity" required>
                                </td>';
                    }                
        $view .= '  <td class="price product-total">'.currency_code.''.number_format($product['options_price'] * $product['quantity'],2).'</td>
                </tr>';
            }
        }
$view .= '</tbody>
        </table>
        </form>';

        //SUGGESTIONS
        if (!empty($products_in_cart) && !empty(category_id_checkout_suggestions)){
           $view .= getAccessoiries($clientsecret,category_id_checkout_suggestions);
        }
        /* SAMPLES
        if (!empty($products_in_cart) && !empty(category_id_checkout_samples)){
            $view .= getSamples($clientsecret,category_id_checkout_samples);
        }*/
$view .= '
        <div class="total">
            <span class="text">'.$total_subtotal.'</span>
            <span class="price">'.currency_code.''.number_format($subtotal,2).'</span>
            <span class="note">'.$total_note.'</span>
        </div>

        <div class="buttons">
            <input type="submit" form ="cart-form" value="'.$btn_emptycart.'" name="emptycart" class="btn" title="Remove cart" style="background:none;">
            <input type="submit" form ="cart-form" value="'.$btn_update.'" name="update" class="btn" title="Refresh cart">
            <input type="submit" form ="cart-form" value="'.$btn_checkout.'" name="checkout" class="btn" style="background-color:green;">
        </div>
        
        
        <h4 style="text-align: right;margin-top: -35px;">
                <a href="'.url(link_to_collection).'" style="text-decoration: none;color: #555555;padding: 10px 10px;font-size: 10px;">
                '.$navigation_back_to_store.'
            </a>
        </h4>
</div>
';

//OUTPUT
echo $view;

template_footer();

?>