补充 VP 模块注册 + 前端 API 封装

- app.module.ts: 注册 VirtualPaymentModule
- config.ts + api.ts: 添加虚拟支付 API 端点
- useGravityPurchase.ts: VP 购买逻辑
- interview.vue / user.vue: 适配 VP 调用
- admin.controller.ts: 管理端虚拟支付相关调整
- payment.controller.spec.ts: 测试适配

zhiyin-app/src/composables/useGravityPurchase.ts

@@ -81,31 +81,41 @@ export function useGravityPurchase(onPaymentSuccess?: () => void) {
 
     if (isMp.value) {
       try {
-        let res = await uni.request({
-          url: api('/payment/jsapi-product'), method: 'POST',
-          data: { type, quantity },
+        const loginRes = await new Promise<{ code: string }>((resolve, reject) => {
+          uni.login({ provider: 'weixin', success: r => resolve(r), fail: reject })
+        })
+        if (!loginRes.code) {
+          payLoading.value = false
+          payError.value = '微信登录失败，请重试'
+          uni.showToast({ title: '微信登录失败', icon: 'none' })
+          return
+        }
+
+        const res = await uni.request({
+          url: api('/virtual-payment/create'), method: 'POST',
+          data: { type, quantity, wxCode: loginRes.code },
           header: { 'Authorization': `Bearer ${token}`, 'Content-Type': 'application/json' },
           timeout: 30000,
         })
         payLoading.value = false
 
-        if (res.statusCode >= 200 && res.statusCode < 300 && res.data?.payParams) {
-          const pp = res.data.payParams as any
-          currentOutTradeNo.value = res.data.outTradeNo || ''
-          uni.requestPayment({
-            provider: 'wxpay',
-            timeStamp: pp.timeStamp,
-            nonceStr: pp.nonceStr,
-            package: pp.package,
-            signType: pp.signType || 'RSA',
-            paySign: pp.paySign,
+        if (res.statusCode >= 200 && res.statusCode < 300 && res.data?.paySig) {
+          const vp = res.data as any
+          currentOutTradeNo.value = vp.outTradeNo
+
+          ;(wx as any).requestVirtualPayment({
+            env: vp.env,
+            offerId: vp.offerId,
+            signData: vp.signData,
+            paySig: vp.paySig,
+            signature: vp.signature,
             success: () => {
-              const no = currentOutTradeNo.value || res.data.outTradeNo
+              const no = currentOutTradeNo.value || vp.outTradeNo
               pollPayResult(no)
             },
-            fail: () => {
+            fail: (err: any) => {
               payError.value = '支付未完成'
-              uni.showToast({ title: '支付未完成', icon: 'none' })
+              uni.showToast({ title: err?.errMsg || '支付未完成', icon: 'none' })
             },
           })
         } else if (!res.statusCode || res.statusCode === 0) {
@@ -116,9 +126,9 @@ export function useGravityPurchase(onPaymentSuccess?: () => void) {
           payError.value = errMsg
           uni.showToast({ title: errMsg, icon: 'none' })
         }
-      } catch (e) {
+      } catch (e: any) {
         payLoading.value = false
-        payError.value = '网络错误，请重试'
+        payError.value = e?.errMsg || '网络错误，请重试'
         uni.showToast({ title: '网络错误', icon: 'none' })
       }
     } else {