import {
    getCartList,
    getCartCounts,
    changeCartNum,
    cartDel
} from '../../api/order.js';
import {
    getProductHot,
    collectAll
} from '../../api/store.js';

const app = getApp();
const util = require('../../utils/util.js');

Page({
    /**
     * 页面的初始数据
     */
    data: {
        parameter: {
            'navbar': '1',
            'return': '0',
            'title': '购物车',
            'color': false
        },
        navH: 0,
        cartCount: 0,
        goodsHidden: true,
        footerswitch: true,
        host_product: [],
        cartList: [],
        isAllSelect: false, //全选
        selectValue: [], //选中的数据
        selectCountPrice: 0.00,
        isGoIndex: true,
        isHidden: false,
    },

    /**
     * 生命周期函数--监听页面加载
     */
    onLoad: function (options) {
        var that = this;
        that.setData({
            navH: app.globalData.navHeight
        });
        if (app.globalData.token) that.setData({
            isHidden: true
        });
    },

    /**
     * input阻止冒泡
     */
    proventD: function () {},

    /**
     * 手动输入数量失焦事件
     */
    inputBlur(e) {
        if (e.detail.value < 1) {
            let index = e.currentTarget.dataset.index;
            let item = this.data.cartList.valid[index];
            item.cart_num = 1;
            if (item.cart_num) this.setCartNum(item.id, item.cart_num);
            let itemData = "cartList.valid[" + index + "]";
            this.setData({
                [itemData]: item
            });
            this.switchSelect();
        }
    },

    /**
     * 关闭授权
     */
    onCloseAuto: function () {
        this.setData({
            isHidden: true
        });
    },

    subDel: function (event) {
        let that = this,
            selectValue = that.data.selectValue;
        if (selectValue.length > 0)
            cartDel(selectValue).then(res => {
                that.getCartList();
                that.getCartNum();
            });
        else
            return app.Tips({
                title: '请选择产品'
            });
    },

    getSelectValueProductId: function () {
        var that = this;
        var validList = that.data.cartList.valid;
        var selectValue = that.data.selectValue;
        var productId = [];
        if (selectValue.length > 0) {
            for (var index in validList) {
                if (that.inArray(validList[index].id, selectValue)) {
                    productId.push(validList[index].product_id);
                }
            }
        };
        return productId;
    },

    subCollect: function (event) {
        let that = this,
            selectValue = that.data.selectValue;
        if (selectValue.length > 0) {
            var selectValueProductId = that.getSelectValueProductId();
            collectAll(that.getSelectValueProductId().join(',')).then(res => {
                return app.Tips({
                    title: res.msg,
                    icon: 'success'
                });
            }).catch(err => {
                return app.Tips({
                    title: err
                });
            });
        } else {
            return app.Tips({
                title: '请选择产品'
            });
        }
    },

    subOrder: function (event) {
        let that = this,
            selectValue = that.data.selectValue;
        if (selectValue.length > 0) {
            wx.navigateTo({
                url: '/pages/order_confirm/index?cartId=' + selectValue.join(',')
            });
        } else {
            return app.Tips({
                title: '请选择产品'
            });
        }
    },

    checkboxAllChange: function (event) {
        var value = event.detail.value;
        if (value.length > 0) {
            this.setAllSelectValue(1)
        } else {
            this.setAllSelectValue(0)
        }
    },

    setAllSelectValue: function (status) {
        var that = this;
        var selectValue = [];
        var valid = that.data.cartList.valid;
        if (valid.length > 0) {
            for (var index in valid) {
                if (status == 1) {
                    valid[index].checked = true;
                    selectValue.push(valid[index].id);
                } else valid[index].checked = false;
            }
            var validData = "cartList.valid";
            that.setData({
                [validData]: valid,
                selectValue: selectValue,
            });
            that.switchSelect();
        }
    },

    checkboxChange: function (event) {
        var that = this;
        var value = event.detail.value;
        var valid = this.data.cartList.valid;
        for (var index in valid) {
            if (that.inArray(valid[index].id, value)) valid[index].checked = true;
            else valid[index].checked = false;
        }
        var validData = "cartList.valid";
        this.setData({
            [validData]: valid,
            isAllSelect: value.length == this.data.cartList.valid.length,
            selectValue: value,
        })
        this.switchSelect();
    },

    inArray: function (search, array) {
        for (var i in array) {
            if (array[i] == search) {
                return true;
            }
        }
        return false;
    },

    switchSelect: function () {
        var that = this;
        var validList = that.data.cartList.valid;
        var selectValue = that.data.selectValue;
        var selectCountPrice = 0.00;
        if (selectValue.length < 1) {
            that.setData({
                selectCountPrice: selectCountPrice
            });
        } else {
            for (var index in validList) {
                if (that.inArray(validList[index].id, selectValue)) {
                    selectCountPrice = Number(selectCountPrice) + Number(validList[index].cart_num) * Number(validList[index].truePrice)
                }
            }
            that.setData({
                selectCountPrice: selectCountPrice.toFixed(2)
            });
        }
    },

    subCart: function (event) {
        var that = this;
        var status = false;
        var index = event.currentTarget.dataset.index;
        var item = that.data.cartList.valid[index];
        item.cart_num = item.cart_num - 1;
        if (item.cart_num < 1) status = true;
        if (item.cart_num <= 1) {
            item.cart_num = 1;
            item.numSub = true;
        } else {
            item.numSub = false;
            item.numAdd = false;
        }
        if (false == status) {
            that.setCartNum(item.id, item.cart_num, function (data) {
                var itemData = "cartList.valid[" + index + "]";
                that.setData({
                    [itemData]: item
                });
                that.switchSelect();
            });
        }
    },

    /**
     * 购物车手动填写
     */
    iptCartNum: function (e) {
        let index = e.currentTarget.dataset.index;
        let item = this.data.cartList.valid[index];
        item.cart_num = e.detail.value;
        if (item.cart_num) this.setCartNum(item.id, item.cart_num);
        let itemData = "cartList.valid[" + index + "]";
        this.setData({
            [itemData]: item
        });
        this.switchSelect();
    },

    addCart: function (event) {
        var that = this;
        var index = event.currentTarget.dataset.index;
        var item = that.data.cartList.valid[index];
        item.cart_num = parseInt(item.cart_num) + 1;
        var productInfo = item.productInfo;
        if (productInfo.hasOwnProperty('attrInfo') && item.cart_num >= item.productInfo.attrInfo.stock) {
            item.cart_num = item.productInfo.attrInfo.stock;
            item.numAdd = true;
            item.numSub = false;
        } else if (item.cart_num >= item.productInfo.stock) {
            item.cart_num = item.productInfo.stock;
            item.numAdd = true;
            item.numSub = false;
        } else {
            item.numAdd = false;
            item.numSub = false;
        }
        that.setCartNum(item.id, item.cart_num, function (data) {
            var itemData = "cartList.valid[" + index + "]";
            that.setData({
                [itemData]: item
            });
            that.switchSelect();
        });
    },

    setCartNum(cartId, cartNum, successCallback) {
        var that = this;
        changeCartNum(cartId, cartNum).then(res => {
            successCallback && successCallback(res.data);
        });
    },

    getCartNum: function () {
        var that = this;
        getCartCounts().then(res => {
            that.setData({
                cartCount: res.data.count
            });
        });
    },

    getCartList: function () {
        var that = this;
        getCartList().then(res => {
            var cartList = res.data;
            var valid = cartList.valid;
            var numSub = [{
                numSub: true
            }, {
                numSub: false
            }];
            var numAdd = [{
                    numAdd: true
                }, {
                    numAdd: false
                }],
                selectValue = [];;
            if (valid.length > 0) {
                for (var index in valid) {
                    if (valid[index].cart_num == 1) {
                        valid[index].numSub = true;
                    } else {
                        valid[index].numSub = false;
                    }
                    var productInfo = valid[index].productInfo;
                    if (productInfo.hasOwnProperty('attrInfo') && valid[index].cart_num == valid[index].productInfo.attrInfo.stock) {
                        valid[index].numAdd = true;;
                    } else if (valid[index].cart_num == valid[index].productInfo.stock) {
                        valid[index].numAdd = true;;
                    } else {
                        valid[index].numAdd = false;
                    }
                    valid[index].checked = true;
                    selectValue.push(valid[index].id);
                }
            }
            that.setData({
                cartList: cartList,
                goodsHidden: cartList.valid.length <= 0 ? false : true,
                selectValue: selectValue,
                isAllSelect: valid.length == selectValue.length && valid.length
            });
            that.switchSelect();
        });
    },

    getHostProduct: function () {
        var that = this;
        getProductHot().then(res => {
            that.setData({
                host_product: res.data
            });
        });
    },

    goodsOpen: function () {
        var that = this;
        that.setData({
            goodsHidden: !that.data.goodsHidden
        })
    },

    manage: function () {
        var that = this;
        that.setData({
            footerswitch: !that.data.footerswitch
        })
    },

    /**
     * 生命周期函数--监听页面初次渲染完成
     */
    onReady: function () {

    },

    onLoadFun: function () {
        this.getHostProduct();
        this.getCartList();
        this.getCartNum();
    },

    /**
     * 生命周期函数--监听页面显示
     */
    onShow: function () {
        if (app.globalData.isLog == true) {
            this.getHostProduct();
            this.getCartList();
            this.getCartNum();
            this.setData({
                goodsHidden: true,
                footerswitch: true,
                host_product: [],
                cartList: [],
                isAllSelect: false, //全选
                selectValue: [], //选中的数据
                selectCountPrice: 0.00,
                cartCount: 0,
                isHidden: true
            });
        }
    },
    
    unsetCart: function () {
        let that = this,
            ids = [];
        for (var i = 0, len = that.data.cartList.invalid.length; i < len; i++) {
            ids.push(that.data.cartList.invalid[i].id);
        }
        cartDel(ids).then(res => {
            app.Tips({
                title: '清除成功'
            });
            that.setData({
                'cartList.invalid': []
            });
        }).catch(res => {

        });
    },

    /**
     * 生命周期函数--监听页面隐藏
     */
    onHide: function () {

    },

    /**
     * 生命周期函数--监听页面卸载
     */
    onUnload: function () {

    },

    /**
     * 页面相关事件处理函数--监听用户下拉动作
     */
    onPullDownRefresh: function () {

    },

})