$(function () {
    var $form = $('#submitKoszykForm');
    var $inputs = $form.find('.basket-amount');
    var $basket_box = $('.basket-box span');
    var cached_rows = {};

    var ajax_queue = null;
    var ajax_queue_time = 500;
    var ajax_waiting = null;

    var successCallback = function (basket) {
        var hashes = Object.keys(cached_rows);
        var total_price = String((+basket.total_value).toFixed(2)).replace('.', ',');
        var found = 0;

        if (!basket || !basket.html) {
            addAlert('Nie udało się zmienić ilości produktów w koszyku!', 'danger');
            return false;
        }

        $(hashes).each(function (_ignore, hash) {
            var data = basket.html[hash];
            var $row = cached_rows[hash];

            if (!$row) {
                return;
            }
            if (!data) {
                $row.fadeOut(250, (function () {
                    $(this).remove();
                }).bind($row));
                return;
            }

            $row.find('.basket-price-single').html(data[0]);
            $row.find('.basket-price-sum').html(data[1]);

            found += 1;
        });

        if (found === 0) {
            location.href = location.href;
        }

        $form.find('.totalPrice').html(basket.total_value_html);

        $('.free-shipment-box p').html(basket.free_shipment_string);

        $basket_box.html('<span>koszyk ('+ basket.total_amount +')<br><b>'+ total_price +' zł</b></span>');
        
        // addAlert('Zmieniono ilości produktów w koszyku!', 'success');
    };

    var sendUpdateRequest = function () {
        if (ajax_waiting) {
            ajax_waiting.abort();
        }
        if (ajax_queue) {
            window.clearTimeout(ajax_queue);
        }

        ajax_queue = window.setTimeout(function () {
            ajax_waiting = $.ajax({
                url: $form.attr('action'),
                type: 'post',
                data: $form.serialize() + '&ajax=1',
                success: successCallback,
                cache: false,
                dataType: 'json'
            });
        }, ajax_queue_time);
    };

    $inputs.on('change', function () {
        sendUpdateRequest();
    });

    $inputs.each(function (_ignore, input) {
        var $input = $(input);

        cached_rows[$input.data('hash')] = $input.closest('tr');
    });
});