/**
 * 购物车商品操作
 * @author: feng.chen<feng.chen@yoho.cn>
 * @date: 2016/12/29
 */

'use strict';

let $ = require('yoho-jquery'),
    dialog = require('../../plugin/dialog'),
    tip = require('../../plugin/tip'),
    chosePanel = require('../chose-panel'),
    loading = require('../../plugin/loading');

let goodObj = {
    previousEditSkn: 0,
    init(handle) {
        let self = this;
        self.handle = handle;

        $('.good-item').on('click', '.num-opt .btn', function(e) {
            let goodNumEle = $(e.delegateTarget).find('.good-num');
            let minNumber = goodNumEle.data('min');
            let maxNumber = goodNumEle.data('max');

            let minusEl = $(e.delegateTarget).find('.btn-opt-minus');
            let plusEl = $(e.delegateTarget).find('.btn-opt-plus');
            let oldGoodNum = $(e.delegateTarget).find('.good-num').val();
            let goodNum = oldGoodNum;

            $(this).hasClass('btn-opt-plus') ? goodNum++ : goodNum--;

            if (goodNum < minNumber) {
                if (minNumber === 1) {
                    tip.show('您选择的数量不能为零~')
                } else if(minNumber > 1) {
                    tip.show(`量贩商品，${minNumber}件起购`)
                }
                return;
            }
            if (goodNum > maxNumber) {
                tip.show('您选择的数量超过了最大库存量~')
                return;
            }
            if (goodNum === minNumber) {
                $(minusEl).addClass('disabled');
            } else if($(minusEl).hasClass('disabled')) {
                $(minusEl).removeClass('disabled');
            }
            if (goodNum === maxNumber) {
                $(plusEl).addClass('disabled');
            } else if($(plusEl).hasClass('disabled')) {
                $(plusEl).removeClass('disabled');
            }
            self.modifyNum($(e.delegateTarget).data('id'), oldGoodNum, goodNum);
            $(e.delegateTarget).find('.good-num').val(goodNum);
        });
        $('.good-item').on('click', '.chk.select', function() {
            self.selectGood($(this));
        });
        $('.good-item').on('click', '.chk.edit', function() {
            $(this).toggleClass('checked');
        });
        $('.check-all').on('click', function() {
            if (self.handle.editMode) {
                $(this).find('.chk.edit').toggleClass('checked');
                if ($(this).find('.chk.edit').hasClass('checked')) {
                    $('.good-item .chk.edit').addClass('checked');    
                } else {
                    $('.good-item .chk.edit').removeClass('checked');
                }
            } else {
                $(this).find('.chk.select').toggleClass('checked');

                self.selectGood($('.good-item:not(.low-stocks) .chk.select'), $(this).find('.chk.select').hasClass('checked'));
            }
        });
        $('.btn-del').on('click', function() {
            if (!$('.good-item .chk.edit.checked').length) {
                tip.show('请至少选择一件商品');
                return;
            }
            self.delGood($('.good-item .chk.edit.checked'));
        });
        $('.good-item').on('click', '.size-info', function(e) {
            let $this = $(this),
                skn = $(e.delegateTarget).data('skn');

            let id,
                count,
                canEditNum;

            //如果点击的是上次编辑的商品,直接显示chose-pannel
            if (skn === self.previousEditSkn) {
                chosePanel.show();
                return;
            }
            let isSelected = $(e.delegateTarget).find('.chk.select').hasClass('checked');
            id = $(e.delegateTarget).data('id');
            count = $(e.delegateTarget).find('.good-num').val();
            //加价购或者赠品不能编辑数量
            canEditNum = $(e.delegateTarget).find('.flag.gift').length || $(e.delegateTarget).find('.flag.price-gift').length ? false : true;
            e.stopPropagation();
            loading.showLoadingMask();
            $.ajax({
                url: '/cart/index/new/goodinfo',
                data: {
                    skn: skn,
                    buy_num: count
                },
                type: "POST",
                success: function(res) {
                    self.showEditPannelWithSku(res, id, isSelected, canEditNum);
                    self.previousEditSkn = skn;
                },
                error: function() {
                    loading.hideLoadingMask();
                    tip.show('网络异常');
                },
                complete: function() {
                    loading.hideLoadingMask();
                }
            });
        })
    },
    selectGood(eles, selectAll) {
        let self = this;
        let skuData = self.getSelectGoodData(eles, selectAll);

        $.ajax({
            type: 'post',
            url: '/cart/index/new/select',
            data: {
                skuList: JSON.stringify(skuData)
            }
        }).then(function(data) {
            if (data.code === 200) {
                self.handle.refreshPage(data.data);
            } else if (data.code === 400) {
                tip.show('网络异常');
            }
        }, function() {
            tip.show('网络异常');
        });
    },
    delGood(eles) {
        let self = this;
        let skuData = self.getSelectGoodData(eles).map(ele => {
            delete ele.goods_type;
            delete ele.selected;
            return ele;
        });

        $.ajax({
            type: 'post',
            url: '/cart/index/new/del',
            data: {
                skuList: JSON.stringify(skuData)
            }
        }).then(function(data) {
            if (data.code === 200) {
                self.handle.refreshPage(data.data);
            } else if (data.code === 400) {
                tip.show('网络异常');
            }
        }, function() {
            tip.show('网络异常');
        });
    },
    getSelectGoodData(eles, selectAll) {
        return Array.from(eles.map((i, ele) => {
            let $this = $(ele),
                $good = $this.closest('.good-item'),
                id = $good.data('id'),
                promotion = $good.data('promotion');
                console.log

            let goodInfo = {};

            if (!$this.hasClass('checked') && $good.find('.low-stocks').length > 0) {
                tip.show('库存不足，无法购买');
                return false;
            }

            goodInfo.goods_type = $('#cartType').val();
            if (selectAll != undefined) {
                goodInfo.selected = selectAll ? 'Y' : 'N';
            } else {
                goodInfo.selected = $this.hasClass('checked') ? 'N' : 'Y';
            }
            goodInfo.product_sku = id;
            goodInfo.promotion_id = promotion;
            goodInfo.buy_number = $good.find('.good-num').val();
            return goodInfo;
        }))
        
    },
    showEditPannelWithSku (html, id, isSelected, isEditNum) {
        if (html.length < 2) {
            tip.show('出错啦！');
            return false;
        }

        //删掉页面上原有的pannel
        chosePanel.remove();

        $(html).appendTo('#mainCart');


        chosePanel.init();
        chosePanel.setEditModeWithSknId(id, isSelected);

        if (!isEditNum) {
            chosePanel.disableNumEdit();
        }

        chosePanel.show();
    },
    modifyNum (sku, num, newNum) {
        $.ajax({
            type: 'post',
            url: '/cart/index/new/modifyNum',
            data: {
                sku,
                increaseNum: newNum > num ? newNum - num : 0,
                decreaseNum: num > newNum ? num - newNum : 0,
            }
        }).then(function(data) {
            if (data.code === 200) {
                $(`.good-item[data-id="${sku}"]`).find('.good-num').val(newNum)
            } else if (data.code === 400) {
                tip.show('网络异常');
            }
        }, function() {
            tip.show('网络异常');
        });
    }
}

module.exports = goodObj;