test/pages/order/components/smoothlyOrder/index.js

import commonApi from "../../../../utils/https/common"
let app = getApp()
Component({
	properties: {
		productId: {
			type: [String, Number],
			value: ''
		},
		postId: {
			type: [String, Number],
			value: ''
		},
		type: {
			type: String,
			value: ''
		}
	},
	data: {
		addressList: [],
		addressIndex: -1,
		address: null,
		smoothlyList: [],
		sommthlyIndex: 0,
		showAddressPopup: false,
		showItem: null,
		showSkuPopup: false,
		content: ''
	},
	lifetimes: {
		attached() {
			this.setData({
				sommthlyIndex: 0
			})
			this.getList()
			
			// 组件初始化时，通知父组件重置价格为 0
			this.triggerEvent('updateTotalPrice', {
				total: 0
			});
		}
	},
	observers: {
		'type': function(newVal, oldVal) {
			// 当从邮寄切换到自提时
			if (oldVal === 'post' && newVal !== 'post') {
				// 重置所有商品邮费
				const smoothlyList = this.data.smoothlyList.map(item => ({
					...item,
					postMoney: 0
				}))
				this.setData({
					smoothlyList,
					addressIndex: -1
				})
				// 重新计算总价
				this.calculateTotalPrice()
			} else if (newVal === 'post') {
				// 切换到邮寄时重新计算邮费
				this.showPostMoney()
			}
		},
		'postId': function(newVal, oldVal) {
			// 只有当当前是邮寄类型时，才重新计算邮费
			if (this.data.type === 'post' && newVal !== oldVal) {
				this.showPostMoney()
			}
		}
	},
	onload() {
		this.couponCom = this.selectAllComponents("#coupon")[0];
	},
	methods: {
		// 查看规格信息
		showSkuInfo(e) {
			console.log(e)
			this.setData({
				showItem: e.currentTarget.dataset.item,
				showSkuPopup: true,
				content: e.currentTarget.dataset.item.content
			})
			console.log(this.data.showItem)
		},
		closePopup() {
			this.setData({
				showSkuPopup: false
			})
		},
		// 是否有选中商品
		hasSelectedGoods() {
			return this.data.smoothlyList.some(item => (item.buyNum || 0) > 0);
		},
		// 规格id
		emitSkuIds() {
		    let skuIds = []
		    this.data.smoothlyList.forEach(item => {
		        if (item.buyNum > 0) {
		            skuIds.push(item.sku_id)
		        }
		    });
		    return skuIds;
		},
		// 下单参数
		emitOrder() {
			let orderList = []
			this.data.smoothlyList.forEach(item => {
				if (item.buyNum > 0) {
					orderList.push({
						type: item.type,
						product_id: item.id,
						sku_id: item.sku_id,
						post: this.data.type == 'post' ? this.data.postId : (this.data.address ?
							this.data
							.address.id : ''),
						product_num: item.buyNum,
						use_type: 0,
						is_batch_shipment: 0,
					})
				}
			})
			return orderList
		},
		switchSmoothlyList() {
			const {
				smoothlyList,
				sommthlyIndex
			} = this.data
			// 重置当前商品数量
			smoothlyList[sommthlyIndex].buyNum = 0

			// 更新索引
			const newIndex = sommthlyIndex < smoothlyList.length - 1 ? sommthlyIndex + 1 : 0
			this.setData({
				smoothlyList,
				sommthlyIndex: newIndex
			})
			
			this.showPostMoney().then(() => {
				this.calculateTotalPrice()
			})
		},
		setNullCoupons() {
			if (app.globalData.couponInfo != null) {
				wx.showToast({
					title: '订单价格发生变化，请重新选择优惠券',
					icon: 'none'
				})

				this.triggerEvent('callOtherComp', {
					methodName: 'setNullCoupon', // 要调用的子组件B的方法名
				});
			}
		},
		setAddress(e) {
			console.log(e.detail);
			this.setData({
				address: e.detail
			})
			this.showPostMoney().then(() => {
				this.calculateTotalPrice()
			})
		},
		showAddress() {
			const childComp = this.selectComponent('#addressComp');
			if (!childComp) {
				wx.showToast({
					title: '组件未加载完成',
					icon: 'none'
				});
				return;
			}
			childComp.showLinkman()
		},
		showImg(img) {
			if (!img) {
				return img
			}
			if (img.indexOf('https://') != -1 || img.indexOf('http://') != -1) {
				return img;
			} else {
				// return "https://test.api.cloud.sz-trip.com"+img
				return "https://static.ticket.sz-trip.com" + img;
			}
		},
		getList() {
			commonApi.user_post('product/get_convenient_purchase', {
				page: 1,
				limit: 100,
				product_id: this.data.productId
			}).then(res => {
				if (res.data) {
					const smoothlyList = res.data.map(i => ({
						...i,
						headimg: this.showImg(i.headimg),
						buyNum: 0,
						postMoney: 0
					}));
					this.setData({
						smoothlyList
					});
				}
			})
		},
		showPostMoney() {
			const {
				type,
				postId,
				addressList,
				addressIndex,
				smoothlyList
			} = this.data

			if (type == 'post') {
				if (!postId) return Promise.resolve()
			} else {
				if (!this.data.address) return Promise.resolve()
			}

			const promises = smoothlyList.map(item => {
				if (item.buyNum > 0) {
					return commonApi.user_post("order/get_post_price", {
						sku_id: item.sku_id,
						num: item.buyNum,
						consignee_id: type == 'post' ? postId : (this.data.address ? this.data
							.address.id : '')
					}).then(res => {
						if (res.code == 1) {
							// 更新对应商品的邮费
							const newList = [...smoothlyList]
							const idx = newList.findIndex(i => i.sku_id === item.sku_id)
							console.log(res.data.price)
							if (idx > -1) {
								newList[idx].postMoney = res.data.price
								this.setData({
									smoothlyList: newList
								})
							}
						}
					})
				}
				return Promise.resolve()
			})

			return Promise.all(promises)
		},
		decreaseSkuNum(e) {
			const item = e.currentTarget.dataset.item
			const {
				smoothlyList
			} = this.data

			if (item.buyNum > 0) {
				// 找到对应商品并更新数量
				const newList = smoothlyList.map(i => {
					if (i.sku_id === item.sku_id) {
						return {
							...i,
							buyNum: i.buyNum - 1
						}
					}
					return i
				})

				this.setData({
					smoothlyList: newList
				})
				this.setNullCoupons()
				this.showPostMoney().then(() => {
					this.calculateTotalPrice()
				})
			}
		},

		increaseSkuNum(e) {
			const item = e.currentTarget.dataset.item
			const {
				smoothlyList
			} = this.data

			// 找到对应商品并更新数量
			const newList = smoothlyList.map(i => {
				if (i.sku_id === item.sku_id) {
					return {
						...i,
						buyNum: i.buyNum + 1
					}
				}
				return i
			})

			this.setData({
				smoothlyList: newList
			})

			this.showPostMoney().then(() => {
				this.calculateTotalPrice()
			})
		},
		// 计算总价
		calculateTotalPrice() {
			let total = 0;
			this.data.smoothlyList.forEach(item => {
				if (item.buyNum > 0) {
					const itemPrice = parseFloat(item.price) * item.buyNum;
					total += itemPrice + item.postMoney;
				}
			});
			this.triggerEvent('updateTotalPrice', {
				total
			});
			return total;
		},
	}
})