feat: add resident miniapp MVP

miniapp/miniprogram/pages/group-buy/detail.js

@@ -1 +1,69 @@
-Page({})
+const { getGroupBuyDetail, createGroupBuyOrder } = require('../../api/groupBuyApi')
+const { listAddresses } = require('../../api/addressApi')
+
+Page({
+  data: {
+    groupBuy: null,
+    addresses: [],
+    addressIndex: 0,
+    submitting: false,
+    form: {
+      quantity: 1,
+      deliveryMethod: 'SELF_PICKUP',
+      remark: ''
+    }
+  },
+
+  onLoad(options) {
+    this.groupBuyId = Number(options.id)
+    Promise.all([getGroupBuyDetail(this.groupBuyId), listAddresses().catch(() => [])])
+      .then(([groupBuy, addresses]) => {
+        this.setData({
+          groupBuy,
+          addresses: addresses || []
+        })
+      })
+      .catch((error) => wx.showToast({ title: error.message, icon: 'none' }))
+  },
+
+  onQuantityChange(event) {
+    this.setData({ 'form.quantity': Number(event.detail.value || 1) })
+  },
+
+  onMethodChange(event) {
+    this.setData({ 'form.deliveryMethod': event.detail.value })
+  },
+
+  onAddressChange(event) {
+    this.setData({ addressIndex: Number(event.detail.value) })
+  },
+
+  onRemarkInput(event) {
+    this.setData({ 'form.remark': event.detail.value })
+  },
+
+  submit() {
+    if (!this.data.groupBuy || this.data.submitting) {
+      return
+    }
+    const address = this.data.addresses[this.data.addressIndex]
+    if (this.data.form.deliveryMethod !== 'SELF_PICKUP' && !address) {
+      wx.showToast({ title: '请先添加地址', icon: 'none' })
+      return
+    }
+    this.setData({ submitting: true })
+    createGroupBuyOrder({
+      groupBuyId: this.data.groupBuy.id,
+      addressId: address ? address.id : null,
+      quantity: this.data.form.quantity,
+      deliveryMethod: this.data.form.deliveryMethod,
+      remark: this.data.form.remark
+    })
+      .then(() => {
+        wx.showToast({ title: '已提交' })
+        wx.navigateTo({ url: '/pages/orders/index' })
+      })
+      .catch((error) => wx.showToast({ title: error.message, icon: 'none' }))
+      .finally(() => this.setData({ submitting: false }))
+  }
+})