Add bind-time initial location fallback

banban-mini/src/pages/bind/index.tsx

@@ -5,6 +5,7 @@ import Taro, { useDidShow, useDidHide, useRouter } from '@tarojs/taro'
 import { getToken } from '@/services/auth'
 import {
   getNFCBindSession,
+  reportBindInitialLocation,
   resolveActiveBinding,
   setBindingChild,
   setSelectedBindingDeviceId,
@@ -210,6 +211,26 @@ export default function Bind() {
     Taro.switchTab({ url: '/pages/sleep/index' })
   }
 
+  const uploadBindInitialLocation = async (targetDeviceId?: string | null) => {
+    const normalizedDeviceId = String(targetDeviceId || '').trim()
+    if (!normalizedDeviceId) return
+
+    try {
+      const location = await Taro.getLocation({
+        type: 'gcj02',
+        isHighAccuracy: true,
+      })
+      await reportBindInitialLocation(normalizedDeviceId, {
+        latitude: location.latitude,
+        longitude: location.longitude,
+        coord_type: 'gcj02',
+        accuracy_m: typeof location.accuracy === 'number' ? Math.round(location.accuracy) : undefined,
+      })
+    } catch (error) {
+      console.log('[bind] initial location skipped:', error)
+    }
+  }
+
   const handleBack = () => {
     if (getCurrentPages().length > 1) {
       Taro.navigateBack()
@@ -335,6 +356,9 @@ export default function Bind() {
 
       if (session.status === SESSION_STATUS_COMPLETED) {
         setSelectedBindingDeviceId(session.device_id)
+        if (!isAddingCard && session.child_id) {
+          void uploadBindInitialLocation(session.device_id)
+        }
         setBindHint(
           isAddingCard
             ? session.card_uuid ? `新卡添加完成，卡号 ${session.card_uuid}` : '新卡添加完成'
@@ -480,6 +504,7 @@ export default function Bind() {
         }
         await setBindingChild(pendingDeviceId!, { child_id: childId })
         setSelectedBindingDeviceId(pendingDeviceId)
+        void uploadBindInitialLocation(pendingDeviceId)
         Taro.showToast({ title: '关联完成', icon: 'success' })
         setTimeout(() => {
           goDevicePage()

banban-mini/src/services/binding.ts

@@ -87,6 +87,13 @@ export interface NFCSessionStatus {
   card_uuid?: string | null
 }
 
+export interface BindInitialLocationPayload {
+  latitude: number
+  longitude: number
+  coord_type: 'gcj02'
+  accuracy_m?: number
+}
+
 export function getSelectedBindingDeviceId(): string | null {
   const value = Taro.getStorageSync(SELECTED_BINDING_DEVICE_ID_KEY)
   const deviceId = String(value || '').trim()
@@ -211,6 +218,16 @@ export async function setBindingChild(
   })
 }
 
+export async function reportBindInitialLocation(
+  deviceId: string,
+  data: BindInitialLocationPayload
+): Promise<{ accepted: boolean; inserted: boolean }> {
+  return request(`/banban/bindings/${deviceId}/initial-location`, {
+    method: 'POST',
+    data,
+  })
+}
+
 export async function unbindDevice(deviceId: string): Promise<void> {
   return request(`/banban/bindings/${deviceId}`, {
     method: 'DELETE',