(function($) {
    'use strict';

    $(function() {
        var minQty = 0;
        var wrapper = $('.yoone-bundle-form');
        if (!wrapper.length) return;

        // 价格格式
        var currencySymbol = wrapper.data('currency-symbol') || '';
        var priceDecimals = parseInt(wrapper.data('price-decimals'), 10);
        var decSep = wrapper.data('decimal-separator') || '.';
        var thouSep = wrapper.data('thousand-separator') || ',';
        var discountType = wrapper.data('discount-type') || 'none';
        var discountAmount = parseFloat(wrapper.data('discount-amount') || '0');

        // 从 DOM 中获取最小数量
        var minText = wrapper.find('.yoone-bundle-min').text();
        if (minText) {
            var match = minText.match(/\d+/);
            if (match) {
                minQty = parseInt(match[0], 10);
            }
        }

        function formatMoney(n) {
            var s = (typeof n === 'number') ? n : parseFloat(n || 0);
            if (isNaN(s)) s = 0;
            var fixed = s.toFixed(isNaN(priceDecimals) ? 2 : priceDecimals);
            var parts = fixed.split('.');
            var intPart = parts[0];
            var fracPart = parts[1] ? decSep + parts[1] : '';
            // thousands grouping
            var rgx = /\B(?=(\d{3})+(?!\d))/g;
            intPart = intPart.replace(rgx, thouSep);
            return currencySymbol + intPart + fracPart;
        }

        function updateState() {
            var total = 0;
            wrapper.find('.yoone-bundle-qty').each(function() {
                var v = parseInt($(this).val(), 10);
                var unit = parseFloat($(this).data('unit-price') || '0');
                if (!isNaN(v) && v > 0) {
                    total += v;
                }
            });

            // 更新显示的数量
            wrapper.find('.yoone-bundle-selected-count').text(total);

            // 根据是否满足最小数量来启用/禁用按钮
            var btn = wrapper.find('.single_add_to_cart_button');
            if (total >= minQty) {
                btn.prop('disabled', false);
            } else {
                btn.prop('disabled', true);
            }

            // 计算价格总计与折扣后的总计
            var rawSum = 0;
            wrapper.find('.yoone-bundle-qty').each(function() {
                var qty = parseInt($(this).val(), 10);
                var unit = parseFloat($(this).data('unit-price') || '0');
                if (!isNaN(qty) && qty > 0 && !isNaN(unit) && unit > 0) {
                    rawSum += qty * unit;
                }
            });
            wrapper.find('.yoone-bundle-total-raw-value').text(formatMoney(rawSum));
            if (discountType !== 'none' && discountAmount > 0) {
                var discounted = rawSum;
                if (discountType === 'percent') {
                    discounted = rawSum * (1 - discountAmount / 100.0);
                } else if (discountType === 'fixed') {
                    discounted = Math.max(0, rawSum - discountAmount);
                }
                wrapper.find('.yoone-bundle-total-discounted-value').text(formatMoney(discounted));
            }
        }

        // 绑定事件
        wrapper.on('change keyup', '.yoone-bundle-qty', updateState);

        // 页面加载时立即执行一次，以确保初始状态正确
        updateState();
    });

})(jQuery);