@php
    $items = [];
    $totalValue = 0;

    foreach ($cartItems as $row) {
        $price = $row['discount_price'] ?? $row['price'] ?? 0;
        $qty   = $row['qty'] ?? $row['quantity'] ?? 1;

        $item = [
            'item_id'       => (string) ($row['id'] ?? $row['product_id'] ?? ''),
            'item_name'     => (string) ($row['name'] ?? $row['product_name'] ?? 'Product'),
            'affiliation'   => config('app.name', 'MyCommerce'),
            'item_brand'    => config('app.name', 'MyCommerce'),
            'item_category' => (string) ($row['category_name'] ?? ($row['category']->name ?? '')),
            'price'         => (float) $price,
            'quantity'      => (int) $qty,
        ];

        $items[] = $item;
        $totalValue += $price * $qty;
    }
@endphp

<script>
    window.dataLayer = window.dataLayer || [];

    function pushEcomEvent(eventName, ecommerceData) {
        window.dataLayer.push({ ecommerce: null });
        window.dataLayer.push({
            event: eventName,
            ecommerce: ecommerceData
        });
    }

    (function () {
        var items = @json($items);
        var totalValue = {{ (float) $totalValue }};

        // 1) Checkout page load => begin_checkout
        if (items.length) {
            pushEcomEvent('begin_checkout', {
                currency: "BDT",
                value: totalValue,
                items: items
            });
        }

        // 2) add_payment_info => checkout form submit
        // NOTE: checkout form e id="checkoutForm" dite hobe
        var form = document.getElementById('checkoutForm');
        if (form && items.length) {
            form.addEventListener('submit', function () {
                // payment field theke method nibo (select / radio jeta thakbe)
                var paymentMethod = '';
                var pmSelect = form.querySelector('[name="payment_method"]');
                if (pmSelect) {
                    paymentMethod = pmSelect.value;
                } else {
                    var pmChecked = form.querySelector('input[name="payment_method"]:checked');
                    if (pmChecked) paymentMethod = pmChecked.value;
                }

                pushEcomEvent('add_payment_info', {
                    currency: "BDT",
                    value: totalValue,
                    payment_type: paymentMethod || 'unknown',
                    items: items
                });
            });
        }
    })();
</script>