/**
 * 购物车选择尺寸、颜色和数量面板
 * 显示时构造当前商品信息的HTML插入yoho-page；消失则是直接清除HTML
 * @author: xuqi<qi.xu@yoho.cn>
 * @date: 2015/10/21
 */


// bikai
// 增加init函数，异步请求的接口需要重新初始化一下选择列表
// 异步渲染的模板统一插入 #chose-panel ,兼容页面多个选择框


var $ = require('yoho-jquery'),
    tip = require('../plugin/tip'),
    loading = require('../plugin/loading');

var innerScroll = require('../plugin/inner-scroll');

var $chosePanel = $('#chose-panel'),
    $num,
    $chosed,
    $imgsThumb,
    $leftNum,
    leftNum,
    confirming,
    curColorIndex,
    curSizeIndex,
    hasChooseColor,
    hasChooseSize,
    $curSizeBlock,
    $sizeRowList,
    $curColorBlock,
    $colorRowList,
    cbFn,
    $allChoseItems,
    queryString,
    $choseArea,
    $cartBar,
    $soonSoldOut = $('.soonSoldOut-tag'),
    $yohoPage = $('.yoho-page'),

    // 门票 限购数量
    ticketsLimit = $('#limitNum').val() || 0,
    single = $('#single').val() || 0,
    $productSku = $('#productSku'),
    $buyNumber = $('#buyNumber'),
    $buyNowForm = $('#buyNowForm');

// 购物车编辑标相关变量
var isEdit,
    isSelected,
    oldSknId;

// 限购商品的商品码。只有限购商品时才会设置。
var limitProductCode,

    // 限购商品的skn。只有限购商品时才会设置。
    skn;

var isSecKills = $('.isSecKill').length;// 秒杀标记

// 禁用数字编辑
function disableNumEdit() {
    var $numBtn = $('.chose-panel').find('.num .btn>.iconfont');

    // 添加disabled样式
    $numBtn.hasClass('disabled') ? null : $numBtn.addClass('disabled');

    $yohoPage.off('touchstart', '.btn-minus');
    $yohoPage.off('touchstart', '.btn-plus');
}

// 初始化购物车面板显示
function init() {
    hasChooseColor = false;
    hasChooseSize = false;
    $curSizeBlock = null;
    queryString = $.queryString();
    $imgsThumb = $('.chose-panel').find('.thumb');
    $choseArea = $('.chose-panel .main .chose-items');
    $allChoseItems = $('.chose-items');
    $sizeRowList = $('.size-list ul');
    $colorRowList = $('.color-list ul');
    $leftNum = $('#left-num');
    $cartBar = $('.cart-bar');
    curColorIndex = 0;
    curSizeIndex = 0;
    isEdit = 0;
}

/*
 * 设置当前面板为编辑模式
 *
 * @param {String} sknId. 当前编辑商品的sknId
 *
 * @param {Bool} isThisGoodSelected. 当前编辑商品的在购物车中是否被选中
 *
 * @return {undefined}
 */
function setEditModeWithSknId(sknId, isThisGoodSelected) {
    $('#chose-btn-sure').html('确认');
    isEdit = 1;
    oldSknId = sknId;
    isSelected = isThisGoodSelected;
}

/*
 * 设置当前面板为限购商品模式
 *
 * @param {String} code 当前限购商品的商品码
 *
 * @param {String} sknId. 当前限购商品的sknId
 *
 * @return {undefined}
 */
function setLimitGoodModeWithSknId(code, sknId) {
    disableNumEdit();
    $('#chose-btn-sure').html('立即购买');
    limitProductCode = code;
    skn = sknId;
}

// 删除面板
function removePannel() {
    var $pannel = $('.chose-panel'),
        $promotionId = $('#promotionId');

    if ($pannel) {
        $pannel.remove();
    }

    if ($promotionId) {
        $promotionId.remove();
    }
}

// 检查门票选择
function checkTickets() {
    if (!hasChooseColor && !hasChooseSize) {
        if (single) {
            tip.show('请选择日期~');
        } else {
            tip.show('请选择日期和区域~');
        }
        return false;
    } else if (!hasChooseColor) {
        tip.show('请选择日期~');
        return false;
    } else if (!hasChooseSize && !single) {
        tip.show('请选择区域~');
        return false;
    }
    return true;
}

function checkColorSizeNum() {

    if (ticketsLimit) {

        // 门票
        if (!checkTickets()) {
            return;
        }
    }

    if (!hasChooseColor && !hasChooseSize) {
        tip.show('请选择颜色和尺码~');
        return false;
    } else if (!hasChooseColor) {
        tip.show('请选择颜色~');
        return false;
    } else if (!hasChooseSize) {
        tip.show('请选择尺码~');
        return false;
    }
    return true;
}

function show(html, cb) {
    if (html) {
        $chosePanel.html(html);
        if ($('#promotionId').val() !== '') {
            disableNumEdit();
        }
        init();
    }

    $('.chose-panel').show();
    $num = $('#good-num');
    cbFn = cb;


    innerScroll.disableScroll($choseArea);
}

// 隐藏当前Panel
function hide() {
    $('.chose-panel').hide();
    innerScroll.enableScroll($choseArea);

    if ($cartBar.length > 0) {
        $cartBar.show();
    }
}

// 修改加入购物车的文字和背景

var isSeckill = $('.limit-num-text').length;

function updateConformButtonClassAndText() {
    if (isSeckill > 0) {
        $chosed = $allChoseItems.find('.chosed');
        if ($chosed.closest('.zero-stock').length === 2) {
            $('#chose-btn-sure').css('background-color', '#c0c0c0').html('已售罄');
        } else if (limitProductCode || ticketsLimit) {
            $('#chose-btn-sure').css('background-color', '#eb0313').html('立即购买');
        } else {
            $('#chose-btn-sure').css('background-color', '#eb0313').html(isEdit ? '确认' : '立即结算');
        }
    } else {
        $chosed = $allChoseItems.find('.chosed');
        if ($chosed.closest('.zero-stock').length === 2) {
            $('#chose-btn-sure').css('background-color', '#c0c0c0').html('已售罄');
        } else if (limitProductCode || ticketsLimit) {
            $('#chose-btn-sure').css('background-color', '#eb0313').html('立即购买');
        } else {
            $('#chose-btn-sure').css('background-color', '#eb0313').html(isEdit ? '确认' : '加入购物车');
        }
    }

}

// 显示剩余件数
function displayGoodNum(curGoodNum) {

    // 门票限购
    if (ticketsLimit) {
        $allChoseItems.find('.num .left-num').html('限购' + ticketsLimit + '件');
        $leftNum.val(curGoodNum);
        return;
    }

    // 数量大于
    if (curGoodNum > 0) {
        if ($soonSoldOut.length > 0) {
            $allChoseItems.find('.num .left-num').html('即将售罄');
        } else {
            $allChoseItems.find('.num .left-num').html('剩余' + curGoodNum + '件');
        }

        $leftNum.val(curGoodNum);

        // 数量小于0
    } else {
        $allChoseItems.find('.num .left-num').html('');
        $leftNum.val(0);
    }
}

// 老的选中尺码去掉勾选,新的选中尺码加上勾选
function changeSizeChosed(newSizeIndex) {
    var sizes,
        queryString,
        i;

    if (curColorIndex && $curSizeBlock && $curSizeBlock.length > 0) {
        $curSizeBlock.removeClass('chosed');
        sizes = $sizeRowList.eq(newSizeIndex).children();
        for (i = 0; i < sizes.length; i++) {
            if ($(sizes[i]).data('id') === $curSizeBlock.data('id')) {
                $curSizeBlock = $(sizes[i]);
                queryString = '#' + $curSizeBlock.data('id');
                curColorIndex = $(queryString).data('index');
                $curSizeBlock.addClass('chosed');
                return $curSizeBlock.data('num');
            }
        }

        // 特殊处理: 老的选中尺码在新选中的颜色对应尺码中不存在,需要下述1,2,3
        // 1.重置尺码选择的标志变量.
        $curSizeBlock = null;
        hasChooseSize = false;

        // 2.当前颜色行隐藏
        $colorRowList.eq(curColorIndex).addClass('hide');

        // 3.目标颜色行第一行显示
        $colorRowList.eq(0).removeClass('hide');
        curColorIndex = 0;

        return -1;
    }
    return 0;
}

// 老的选中颜色去掉勾选,新的选中颜色加上勾选
function changeColorChosed(newColorIndex) {
    if (curSizeIndex && $curColorBlock && $curColorBlock.length > 0) {
        $curColorBlock.removeClass('chosed');
        $curColorBlock = $($colorRowList.eq(newColorIndex).children().get(curSizeIndex - 1));
        $curColorBlock.addClass('chosed');
        return $curColorBlock.data('num');
    }
    return 0;
}

// 添加门票
function addTickets(productSku, buyNumber) {
    var data = {
        productSku: productSku,
        buyNumber: buyNumber
    };

    // 校验电子票
    $.ajax({
        url: '/cart/index/checkTickets',
        dataType: 'json',
        data: data,
        type: 'post',
        success: function(addRestult) {
            if (addRestult.code !== 200) {
                if (addRestult.code === 401) {
                    window.location.href = '//m.yohobuy.com/signin.html?refer=' + window.location.href;
                }
                tip.show(addRestult.message);
            } else {
                $productSku.val(productSku);
                $buyNumber.val(buyNumber);
                $buyNowForm.submit();
            }
        },
        error: function() {
            tip.show('网络异常~');
        }

    });
}

init();


$yohoPage.on('touchstart', '.chose-panel', function(e) {
    var $cur = $(e.target);

    if ($cur.closest('.main').length > 0) {
        return;
    }

    // 点击蒙版消失
    hide();

    return false;
});

$yohoPage.on('touchstart', '.color-list .block', function() {
    var $this = $(this),
        index = $this.index(),
        curGoodNum;

    // 当前颜色已经是选中状态,再点击时
    if ($this.hasClass('chosed')) {

        // 清空剩余件数的提示
        $allChoseItems.find('.num .left-num').html('');
        $leftNum.val(0);
        hasChooseColor = false;

        // 当前尺码行隐藏
        $sizeRowList.eq(curSizeIndex).addClass('hide');

        // 目标尺码行显示
        $sizeRowList.eq(0).removeClass('hide');

        curSizeIndex = 0;

        // 老的选中尺码去掉勾选,新的选中尺码加上勾选
        changeSizeChosed(0);

        // 当前颜色不是选中状态,选中时
    } else {
        hasChooseColor = true;

        // 尺码行当前行隐藏
        $sizeRowList.eq(curSizeIndex).addClass('hide');

        // 老的选中尺码去掉勾选,新的选中尺码加上勾选
        curGoodNum = changeSizeChosed(index + 1);

        // 显示剩余数量
        displayGoodNum(curGoodNum);

        // 尺码对应行显示
        $sizeRowList.eq(index + 1).removeClass('hide');

        curSizeIndex = index + 1;
        $curColorBlock = $this;

        // 修改颜色时修改商品图片
        $imgsThumb.addClass('hide').eq(index).removeClass('hide');
    }

    // 颜色块切换勾选样式
    $this.siblings('.chosed').removeClass('chosed');

    // 特殊处理: 老的选中尺码在新选中的颜色对应尺码中不存在, 需要将颜色的第一行对应的颜色块加上勾选样式.
    if (curGoodNum === -1) {
        $curColorBlock = $($colorRowList.eq(0).children().get(index));
        $curColorBlock.addClass('chosed');

        // 当前选择的颜色块,加上勾选样式
    } else {
        $this.toggleClass('chosed');
    }

    $('#good-num').val(1);

    // 设置按钮的样式和文字
    updateConformButtonClassAndText();

    // 展览票
    if (ticketsLimit && single) {
        // 选中日期
        $curSizeBlock = $('.size-list .size-row .block').eq(index + 1);
        $curSizeBlock.addClass('chosed');

        // 显示剩余数量
        displayGoodNum($curColorBlock.data('num'));
        hasChooseSize = true;
        return false;
    }


}).on('touchstart', '.size-list .block', function() {
    var $this = $(this),
        index,
        curGoodNum;

    // 当前尺码已经是选中状态,再点击时
    if ($this.hasClass('chosed')) {

        // 清空剩余件数的提示
        $allChoseItems.find('.num .left-num').html('');
        $leftNum.val(0);
        hasChooseSize = false;

        // 当前颜色行隐藏
        $colorRowList.eq(curColorIndex).addClass('hide');

        // 目标颜色行显示
        $colorRowList.eq(0).removeClass('hide');

        curColorIndex = 0;

        // 老的选中颜色去掉勾选,新的选中颜色加上勾选
        changeColorChosed(0);

        // 当前尺码不是选中状态,选中时
    } else {
        hasChooseSize = true;

        index = $('#' + $this.data('id')).data('index') - 1;

        // 颜色当前行隐藏
        $colorRowList.eq(curColorIndex).addClass('hide');

        // 老的选中颜色去掉勾选,新的选中颜色加上勾选
        curGoodNum = changeColorChosed(index + 1);

        // 显示剩余数量
        displayGoodNum(curGoodNum);

        // 颜色对应行显示
        $colorRowList.eq(index + 1).removeClass('hide');

        curColorIndex = index + 1;
        $curSizeBlock = $this;
    }

    // 颜色块切换勾选样式
    $this.siblings('.chosed').removeClass('chosed');
    $this.toggleClass('chosed');
    $('#good-num').val(1);

    // 设置按钮的样式和文字
    updateConformButtonClassAndText();
});

$yohoPage.on('touchstart', '.btn-minus', function() {
    var num = parseInt($num.val(), 10);

    leftNum = $('#left-num').val();

    if (!checkColorSizeNum()) {
        return;
    }

    if (num === 1 || leftNum - 0 === 0) {
        tip.show('您选择的数量不能为零~');
        return;
    }
    if (num < 0) {
        tip.show('您选择的数量不能为负数~');
        return;
    }

    $num.val(num - 1);
}).on('touchstart', '.btn-plus', function() {
    var num = parseInt($num.val(), 10),
        maxTips = ticketsLimit ? '每人只可购买' + ticketsLimit + '张当日门票' : '您选择的数量超过了最大库存量~';

    leftNum = ticketsLimit || $('#left-num').val();

    if (!checkColorSizeNum()) {
        return;
    }

    if (num - 0 === leftNum || leftNum === 0) {
        return;
    }

    // TODO:库存数验证
    if (num > leftNum - 1) {
        tip.show(maxTips);
        return;
    }
    $num.val(num + 1);
}).on('touchstart', '#chose-btn-sure', function() {

    var productSku,
        buyNumber = $('#good-num').val() - 0,

        promotionId,
        cartGoodData,
        url,
        num = parseInt($num.val(), 10);

    // 颜色尺码没有选择
    if (!checkColorSizeNum()) {
        return;
    }

    if ($('#chose-btn-sure').html() === '已售罄') {
        return;
    }

    leftNum = $('#left-num').val() - 0;

    if (num > leftNum) {
        tip.show('您选择的数量超过了最大库存量~');
        return;
    }
    if (num < 0) {
        tip.show('您选择的数量小于一件~');
        return;
    }
    $chosed = $('.block-list>ul>li.chosed');

    if ($chosed.length === 2 && $chosed.closest('.zero-stock').length === 0) {
        productSku = $curSizeBlock.data('skuid');
        promotionId = $('#promotionId').val();
        if (confirming) {
            return false;
        }

        if (!ticketsLimit) {
            confirming = true;
        }
        if (!isSecKills) {
            loading.showLoadingMask();
        }

        // 立即购买门票
        if (ticketsLimit) {
            addTickets(productSku, buyNumber);
            return;
        }

        // 针对是否处于编辑模式设置不同的url和需要post的数据
        if (isEdit) {
            cartGoodData = {
                new_product_sku: productSku,
                old_product_sku: oldSknId,
                buy_number: buyNumber,
                selected: isSelected
            };

            url = '/cart/index/modify';

        } else if (limitProductCode) {

            $(this).css('background-color', '#ccc').removeAttr('id');

            // 当前面板选择的是限购商品
            url = $('#limitProductPay').val() + '?limitproductcode=' + limitProductCode + '&sku=' +
                  productSku + '&skn=' + skn + '&buy_number=' + buyNumber;

            removePannel();

            if (!isSecKills) {
                loading.showLoadingMask();
            }

            // 调用接口判断商品是否可以购买
            $.ajax({
                url: url
            }).then(function(res) {

                // 如果有错，则商品不可购买，执行页面刷新，否则跳到结算页面
                if (res.error) {
                    tip.show(res.message);
                    setTimeout(function() {
                        location.reload();
                    }, 2000);
                } else {
                    location.href = url;
                }
            }).fail(function() {
                tip.show('网络异常!');
                setTimeout(function() {
                    location.reload();
                }, 2000);
            });

            return false;

        } else {
            cartGoodData = {
                productSku: productSku,
                buyNumber: buyNumber,
                promotionId: promotionId,
                isEdit: isEdit,
                cartType: queryString.cartType
            };

            url = '/cart/index/add';
        }

        if (!isSecKills) {
            $.ajax({
                method: 'POST',
                url: url,
                data: cartGoodData
            }).done(function(res) {
                var cartNum;

                loading.hideLoadingMask();
                if (res.code === 200 && !isEdit) {
                    cartNum = res.data.goods_count;
                    if (cartNum > 99) {
                        cartNum = '99+';
                    }
                    $('.num-tag').html(cartNum).removeClass('hide');
                    confirming = false;

                    if (cbFn) {
                        cbFn();
                    }
                }
                if (res.message && !isEdit) {
                    tip.show(res.message);
                }

                hide();

                if (isEdit) {
                    loading.showLoadingMask();

                    // 延迟刷新，否则面板可能无法隐藏
                    setTimeout(function() {

                        // 获取当前页面商品类型：普通商品/预售商品
                        window.location.href = '/cart/index/index?cartType=' + $('#cartType').val();
                    }, 1);
                }
            }).fail(function() {
                tip.show('网络出了点问题~');
            }).always(function() {
                confirming = false;
            });

        } else {

            $('#chose-btn-sure').click(
                function() {
                    var thisSkn = $('#productSkn').val();
                    var thisSku = '';
                    $('.size-row').each(
                        function() {
                            if ($(this).hasClass('hide')) {
                                return false;
                            } else {
                                thisSku = $(this).find('.chosed').attr('data-skuid');
                            }
                        }
                    );

                    window.location.href = '/cart/seckill?skn=' + thisSkn + '&sku=' + thisSku;
                }
            );
        }

    }

});

exports.init = init;
exports.show = show;
exports.remove = removePannel;
exports.setEditModeWithSknId = setEditModeWithSknId;
exports.disableNumEdit = disableNumEdit;
exports.setLimitGoodModeWithSknId = setLimitGoodModeWithSknId;