自动选择最优优惠券；是否可开发票判断

pages/make_order/make_order/make_order.js

@@ -24,7 +24,9 @@ Page({
         })
     },
     de() {
-    this.setData({fee_detail:!this.data.fee_detail})
+        this.setData({
+            fee_detail: !this.data.fee_detail
+        })
     },
 
     check(event) {
@@ -33,7 +35,9 @@ Page({
         });
     },
     agreement() {
-this.setData({show:true})
+        this.setData({
+            show: true
+        })
     },
     viewer_sel(event) {
         this.setData({
@@ -56,7 +60,9 @@ this.setData({show:true})
             var viewer_id = this.data.viewer_sel
             if (viewer_id && tid.split(',').length == viewer_id.length) {
                 if (this.data.checked) {
-    this.setData({show1:true})
+                    this.setData({
+                        show1: true
+                    })
                 } else {
                     wx.showToast({
                         title: '请勾选服务条款',
@@ -70,12 +76,15 @@ this.setData({show:true})
                     icon: 'none',
                     duration: 2000
                 })
-}}else    if(this.data._info.show_info.is_real_name==2){
+            }
+        } else if (this.data._info.show_info.is_real_name == 2) {
             var tid = this.data.tid
             var viewer_id = this.data.viewer_sel
             if (viewer_id && viewer_id.length == 1) {
                 if (this.data.checked) {
-  this.setData({show1:true})
+                    this.setData({
+                        show1: true
+                    })
                 } else {
                     wx.showToast({
                         title: '请勾选服务条款',
@@ -89,10 +98,12 @@ wx.showToast({
                     icon: 'none',
                     duration: 2000
                 })
-}}
-else{
+            }
+        } else {
             if (this.data.checked) {
-    this.setData({show1:true})
+                this.setData({
+                    show1: true
+                })
             } else {
                 wx.showToast({
                     title: '请勾选服务条款',
@@ -163,6 +174,51 @@ else{
 
     },
 
+    //    使用最大减免优惠券
+getRecommendCoupons(drama_id,tid){
+        http('/api/v1/coupon-list', "post", {drama_id,tid,mode:1}).then(Response => {
+            if (Response.coupon_list.length > 0) {
+                let coupon_list = Response.coupon_list
+            
+                //  去除日期格式
+                let a = []
+                coupon_list.forEach((item) => {
+                    item.end_date = item.end_date.replace(/[\u4e00-\u9fa5]/g, '')
+                    a.push(item)
+                })
+                coupon_list = a
+
+                //  优惠券筛选策略
+                function couponSort(list, params) {
+                    let descList
+                    if (arguments[2] == 'asc') {
+                        descList = list.sort((a, b) => {
+                            return a[params] - b[params]
+                        })
+                    } else {
+                        descList = list.sort((a, b) => {
+                            return b[params] - a[params]
+                        })
+                    }
+                    let l = []
+                    l.push(descList[0])
+                    descList.forEach((item, index) => {
+                        if (index != 0 && item[params] == l[0][params]) {
+                            l.push(item)
+                        }
+                    })
+                    return l;
+                }
+                
+                let recommendCoupons = couponSort(couponSort(couponSort(coupon_list, "subtract"), 'full'), 'end_date', 'asc')
+                if (recommendCoupons && recommendCoupons.length > 0) {
+                    this.setData({
+                        coupon: recommendCoupons[0]
+                    })
+                }
+            }
+        })
+},
 
 
     /**
@@ -178,8 +234,12 @@ else{
             for (let i in _info.ticket_info) {
                 tprice += _info.ticket_info[i].price * _info.ticket_info[i].tkt_num
             }
+
+            this.getRecommendCoupons(options.drama_id,options.tid)
+   
             this.setData({
-      _info,tprice,
+                _info,
+                tprice,
                 tid: options.tid,
                 drama_id: options.drama_id,
             })

pages/make_order/make_order/make_order.wxml

@@ -13,7 +13,12 @@
         </view>
         <view class="line">
           <van-icon name="passed" color="green" /> 不支持退票
+          <block wx:if="{{_info.show_info.is_invoice==0}}">
+          <van-icon name="close" color="red" /> 不可开发票
+          </block>
+          <block wx:elif="{{_info.show_info.is_invoice==1}}">
           <van-icon name="passed" color="green" /> 可开发票
+          </block>
         </view>
       </view>
     </view>

pages/user/order_detail/order_detail.wxml

@@ -23,7 +23,12 @@
         </view>
         <view class="line" style="font-weight:normal;">
           <van-icon name="passed" color="green" /> 不支持退票
+          <block wx:if="{{show_info.is_invoice==0}}">
+          <van-icon name="close" color="red" /> 不可开发票
+          </block>
+          <block wx:elif="{{show_info.is_invoice==1}}">
           <van-icon name="passed" color="green" /> 可开发票
+          </block>
         </view>
       </view>
     </view>