audio_codebuddy/my-uniapp-vue3/src/pages/payment-confirm/index.vue

<template>
  <view class="page">
    <!-- 顶部导航栏 -->
    <view class="nav-bar">
      <view class="nav-content">
        <view class="nav-left" @click="goBack">
          <text class="back-icon">←</text>
        </view>
        <text class="page-title">确认支付</text>
      </view>
    </view>

    <!-- 支付内容 -->
    <view class="content">
      <!-- 订单信息 -->
      <view class="order-card">
        <text class="order-title">订单信息</text>
        <view class="order-info">
          <text class="info-label">商品</text>
          <text class="info-value">{{ orderInfo.planName || '-' }}</text>
        </view>
        <view class="order-info">
          <text class="info-label">订单号</text>
          <text class="info-value">{{ orderInfo.orderNo || '-' }}</text>
        </view>
        <view class="order-info highlight">
          <text class="info-label">应付金额</text>
          <text class="info-value price">¥{{ orderInfo.amount || 0 }}</text>
        </view>
      </view>

      <!-- 支付方式选择 -->
      <view class="payment-section">
        <text class="section-title">选择支付方式</text>
        <!-- 公众号环境提示 -->
        <view class="wechat-notice" v-if="inWechat">
          <text class="wechat-notice-icon">💚</text>
          <text class="wechat-notice-text">检测到微信环境，将自动使用微信支付</text>
        </view>
        <view class="payment-methods">
          <view
            class="payment-method"
            :class="{ active: paymentMethod === 'alipay' }"
            @click="paymentMethod = 'alipay'"
          >
            <view class="method-radio">
              <view class="radio-inner" v-if="paymentMethod === 'alipay'"></view>
            </view>
            <text class="method-icon">💙</text>
            <text class="method-name">支付宝</text>
          </view>
          <view
            class="payment-method"
            :class="{ active: paymentMethod === 'wechat' }"
            @click="paymentMethod = 'wechat'"
          >
            <view class="method-radio">
              <view class="radio-inner" v-if="paymentMethod === 'wechat'"></view>
            </view>
            <text class="method-icon">🟢</text>
            <text class="method-name">微信支付</text>
            <text class="method-badge" v-if="inWechat">推荐</text>
          </view>
        </view>
      </view>

      <!-- 操作按钮 -->
      <view class="actions">
        <button class="btn-secondary" @click="goBack">取消</button>
        <button class="btn-primary" @click="handlePay">确认支付</button>
      </view>

      <!-- 提示 -->
      <view class="tips">
        <text class="tips-title">温馨提示</text>
        <text class="tips-text">• 请在24小时内完成支付</text>
        <text class="tips-text">• 支付成功后权益将自动到账</text>
        <text class="tips-text">• 如支付遇到问题，请联系客服</text>
      </view>
    </view>
  </view>
</template>

<script setup lang="ts">
import { ref, onMounted } from 'vue';
import { post, get } from '../../utils/request';

// ==================== 微信浏览器检测 ====================
function isInWechat(): boolean {
  // #ifdef H5
  const ua = navigator.userAgent.toLowerCase();
  return ua.includes('micromessenger');
  // #endif
  // #ifndef H5
  return false;
  // #endif
}

// 获取不含 hash 的基础URL（用于OAuth redirect_uri）
function getBaseUrl(): string {
  // #ifdef H5
  return window.location.origin + window.location.pathname;
  // #endif
  return '';
}

// 保存当前页面上下文到 sessionStorage（OAuth 来回会丢失 hash 路由状态）
function savePageContext() {
  try {
    sessionStorage.setItem('wx_oauth_return', window.location.href);
  } catch (_) {}
}

// 恢复页面上下文
function restorePageContext(): string | null {
  try {
    return sessionStorage.getItem('wx_oauth_return');
  } catch (_) { return null; }
}

const orderInfo = ref<{
  orderNo: string;
  amount: number;
  planName: string;
}>({
  orderNo: '',
  amount: 0,
  planName: ''
});

const planId = ref<number>(0);
const productType = ref<string>('');  // 'subscription' | 'token-pack'
const tokenPackQuantity = ref<number>(0);
const paymentMethod = ref<'alipay' | 'wechat'>('alipay');
const inWechat = ref(false);
const openid = ref('');
const paying = ref(false);
const lastPayClick = ref(0); // 防重：记录上次点击时间
let checkTimer: ReturnType<typeof setInterval> | null = null;

// ==================== 微信 OAuth 处理 ====================
async function handleWechatOAuth() {
  // #ifdef H5
  // OAuth 回调已在 App.vue 全局处理，这里只需读取缓存的 openid
  const cachedOpenid = localStorage.getItem('wx_openid');
  if (cachedOpenid) {
    openid.value = cachedOpenid;
    console.log('[WeChat Pay] 使用缓存的 openid');
    return;
  }

  // 双重保险：检查 URL search 中的 code（如果 App.vue 未拦截到）
  const searchParams = new URLSearchParams(window.location.search);
  const code = searchParams.get('code');
  if (code) {
    uni.showLoading({ title: '授权中...' });
    try {
      const result = await post<{ openid: string }>('/payment/wechat/openid', { code });
      openid.value = result.openid;
      localStorage.setItem('wx_openid', result.openid);
      console.log('[WeChat Pay] openid 获取成功，自动重新发起支付');

      // 清除 URL 中的 code/state
      searchParams.delete('code');
      searchParams.delete('state');
      const newSearch = searchParams.toString();
      const newUrl = window.location.origin + window.location.pathname
        + (newSearch ? '?' + newSearch : '');
      window.history.replaceState({}, '', newUrl);

      // 自动重新发起支付（不用用户再点一次）
      setTimeout(() => handleWechatJsapiPay(), 100);
    } catch (e) {
      console.error('[WeChat Pay] 获取 openid 失败:', e);
    } finally {
      uni.hideLoading();
    }
  }
  // #endif
}

// 跳转到微信 OAuth 授权
async function redirectToWechatOAuth() {
  // #ifdef H5
  try {
    // 保存当前完整 URL（含 hash 路由参数），OAuth 回来时恢复
    savePageContext();
    // 用不含 # 的 baseUrl 作为 redirect_uri，避免微信报"非法字符"
    const baseUrl = getBaseUrl();
    const result = await get<{ oauthUrl: string; state: string }>('/payment/wechat/oauth-url', {
      redirect: baseUrl
    });
    window.location.href = result.oauthUrl;
  } catch (e) {
    console.error('[WeChat Pay] 获取OAuth链接失败:', e);
  }
  // #endif
}

onMounted(async () => {
  const pages = getCurrentPages();
  const currentPage = pages[pages.length - 1] as any;
  // #ifdef APP-PLUS
  const options = currentPage?.$page?.options || {};
  // #endif
  // #ifndef APP-PLUS
  const options = currentPage?.options || {};
  // #endif

  // 检查产品类型
  productType.value = options.productType || 'subscription';

  if (productType.value === 'token-pack') {
    // 积分包支付
    tokenPackQuantity.value = parseInt(options.quantity) || 1;
    orderInfo.value.planName = decodeURIComponent(options.planName || '积分包');
    orderInfo.value.amount = parseFloat(options.amount) || 0;
  } else if (options.planId) {
    planId.value = parseInt(options.planId);
    orderInfo.value.planName = decodeURIComponent(options.planName || '会员订阅');
    orderInfo.value.amount = parseFloat(options.amount) || 0;
  }

  // 检测是否在微信浏览器中
  if (isInWechat()) {
    inWechat.value = true;
    // 默认选中微信支付
    paymentMethod.value = 'wechat';
    // 处理 OAuth 回调
    await handleWechatOAuth();
    // 微信环境不预创建订单（JSAPI 支付时另外创建）
  } else {
    // 非微信环境：进入页面时直接创建订单
    if (productType.value === 'token-pack' || planId.value) {
      await createOrder();
    }
  }
});

async function createOrder() {
  try {
    uni.showLoading({ title: '创建订单...' });
    const returnUrl = `${window.location.origin}/#/pages/payment-result/index`;

    let result: any;

    if (productType.value === 'token-pack') {
      // 积分包订单
      result = await post<{
        orderNo: string;
        amount: number;
        paymentUrl?: string;
        qrcode?: string;
        planName?: string;
      }>('/payment/token-packs/create', {
        quantity: tokenPackQuantity.value,
        paymentMethod: paymentMethod.value,
        returnUrl
      });
    } else {
      // 套餐订阅订单
      result = await post<{
        orderNo: string;
        amount: number;
        paymentUrl?: string;
        qrcode?: string;
        planName?: string;
      }>('/payment/create', {
        planId: planId.value,
        paymentMethod: paymentMethod.value,
        returnUrl
      });
    }

    orderInfo.value.orderNo = result.orderNo;
    uni.hideLoading();
  } catch (error) {
    uni.hideLoading();
    console.error('创建订单失败:', error);
  }
}

// 查询微信订单状态（用于支付后确认）
async function checkWechatOrderStatus(orderNo: string): Promise<string | null> {
  try {
    const result = await get<any>(`/payment/wechat/query/${orderNo}`);
    const state = result?.data?.trade_state || result?.trade_state || null;
    console.log('[WeChat Pay] 订单查询结果:', orderNo, state);
    return state;
  } catch (e) {
    console.error('[WeChat Pay] 订单查询失败:', e);
    return null;
  }
}

// ==================== 微信 JSAPI 支付（公众号内） ====================
// 使用 WeixinJSBridge.invoke 直接调起（官方 V3 推荐方式，无需 JSSDK 配置）
// 参考: https://pay.weixin.qq.com/doc/v3/merchant/4012791870
async function handleWechatJsapiPay() {
  // 如果没有 openid，需要先授权
  if (!openid.value) {
    await redirectToWechatOAuth();
    return;
  }

  paying.value = true;
  uni.showLoading({ title: '拉起支付...' });

  try {
    // 创建 JSAPI 支付订单
    let result: any;

    if (productType.value === 'token-pack') {
      result = await post<any>('/payment/wechat/jsapi', {
        productType: 'token-pack',
        quantity: tokenPackQuantity.value,
        openid: openid.value
      });
    } else {
      result = await post<any>('/payment/wechat/jsapi', {
        planId: planId.value,
        openid: openid.value
      });
    }

    orderInfo.value.orderNo = result.orderNo;
    uni.hideLoading();

    // 使用 WeixinJSBridge.invoke 调起支付
    const currentResult = result; // 保存引用，避免闭包问题
    const onBridgeReady = () => {
      if (!currentResult || !currentResult.payParams) {
        console.error('[WeChat Pay] payParams 不存在:', currentResult);
        uni.showToast({ title: '支付参数异常，请重试', icon: 'none' });
        paying.value = false;
        return;
      }
      (window as any).WeixinJSBridge.invoke(
        'getBrandWXPayRequest',
        {
          "appId": currentResult.payParams.appId,
          "timeStamp": currentResult.payParams.timeStamp,
          "nonceStr": currentResult.payParams.nonceStr,
          "package": currentResult.payParams.package,
          "signType": currentResult.payParams.signType || "RSA",
          "paySign": currentResult.payParams.paySign,
        },
        async (res: any) => {
          console.log('[WeChat Pay] WeixinJSBridge 回调:', JSON.stringify(res));
          // 官方要求：必须调用查询订单API确认最终状态
          const orderStatus = await checkWechatOrderStatus(currentResult.orderNo);
          paying.value = false;

          if (res.err_msg === "get_brand_wcpay_request:ok") {
            if (orderStatus === 'SUCCESS') {
              uni.showModal({
                title: '支付成功',
                content: productType.value === 'token-pack' ? '积分包购买成功！' : '恭喜您订阅成功！',
                showCancel: false,
                success: () => uni.switchTab({ url: '/pages/mine/index' })
              });
            } else {
              uni.showToast({ title: '订单确认中，请稍后查看', icon: 'none' });
            }
          } else if (res.err_msg === "get_brand_wcpay_request:cancel") {
            uni.showToast({ title: '已取消支付', icon: 'none' });
          } else if (orderStatus === 'SUCCESS') {
            // 桥回调失败但订单已支付（延迟回调）
            uni.showModal({
              title: '支付成功',
              content: productType.value === 'token-pack' ? '积分包购买成功！' : '恭喜您订阅成功！',
              showCancel: false,
              success: () => uni.switchTab({ url: '/pages/mine/index' })
            });
          } else {
            uni.showModal({
              title: '支付失败',
              content: '微信支付调起失败，是否使用扫码支付？',
              confirmText: '扫码支付',
              cancelText: '取消',
              success: (modalRes: any) => {
                if (modalRes.confirm && currentResult.orderNo) {
                  inWechat.value = false;
                  handlePay();
                }
              }
            });
          }
        }
      );
    };

    // WeixinJSBridge 可能尚未就绪，监听就绪事件
    if (typeof (window as any).WeixinJSBridge === 'undefined') {
      document.addEventListener('WeixinJSBridgeReady', onBridgeReady, false);
    } else {
      onBridgeReady();
    }
  } catch (error: any) {
    paying.value = false;
    uni.hideLoading();
    console.error('[WeChat Pay] 创建JSAPI支付失败:', error);
    if (error.message && error.message.includes('openid')) {
      localStorage.removeItem('wx_openid');
      openid.value = '';
      await redirectToWechatOAuth();
      return;
    }
    uni.showToast({ title: error.message || '支付失败', icon: 'none' });
  }
}

async function handlePay() {
  // 防重处理：2秒内禁止重复点击（官方要求按钮防抖）
  const now = Date.now();
  if (now - lastPayClick.value < 2000) {
    console.log('[Payment] 防重：忽略重复点击');
    return;
  }
  lastPayClick.value = now;

  if (!planId.value && productType.value !== 'token-pack') {
    uni.showToast({ title: '参数错误', icon: 'none' });
    return;
  }

  // 公众号内微信支付 → 走 JSAPI
  if (inWechat.value && paymentMethod.value === 'wechat') {
    await handleWechatJsapiPay();
    return;
  }

  try {
    uni.showLoading({ title: '创建订单...' });

    // #ifdef H5
    const returnUrl = `${window.location.origin}/#/pages/payment-result/index`;
    // #endif
    // #ifndef H5
    // App 端使用相对路径
    const returnUrl = `/#/pages/payment-result/index`;
    // #endif

    let orderResult: any;

    if (productType.value === 'token-pack') {
      orderResult = await post<any>('/payment/token-packs/create', {
        quantity: tokenPackQuantity.value,
        paymentMethod: paymentMethod.value,
        returnUrl
      });
    } else {
      orderResult = await post<any>('/payment/create', {
        planId: planId.value,
        paymentMethod: paymentMethod.value,
        returnUrl
      });
    }

    uni.hideLoading();

    orderInfo.value.orderNo = orderResult.orderNo;

    // 微信支付 - 显示二维码
    if (paymentMethod.value === 'wechat' && orderResult.qrcode) {
      uni.navigateTo({
        url: `/pages/alipay-qrcode/index?orderNo=${orderResult.orderNo}&amount=${orderResult.amount}&planName=${encodeURIComponent(orderResult.planName || orderInfo.value.planName)}&qrcode=${encodeURIComponent(orderResult.qrcode)}&method=wechat`
      });
      return;
    }

    // 支付宝 H5 跳转
    // #ifdef H5
    if (orderResult.paymentUrl) {
      uni.showToast({ title: '即将跳转支付宝...', icon: 'none' });
      setTimeout(() => {
        window.location.href = orderResult.paymentUrl!;
      }, 1000);
    }
    // #endif

    // 开发环境模拟
    // #ifndef H5
    uni.showModal({
      title: '模拟支付',
      content: `确认支付 ¥${orderResult.amount}？\n（开发环境模拟）`,
      success: async (res) => {
        if (res.confirm) {
          await mockPay(orderResult.orderNo);
        }
      },
    });
    // #endif
  } catch (error: any) {
    uni.hideLoading();
    console.error('创建订单失败:', error);
    uni.showToast({ title: error.message || '创建订单失败', icon: 'none' });
  }
}

async function mockPay(orderNo: string) {
  try {
    uni.showLoading({ title: '支付中...' });
    await post('/payment/mock', { orderNo });
    uni.hideLoading();
    uni.showModal({
      title: '支付成功',
      content: productType.value === 'token-pack' ? '积分包购买成功！' : '恭喜您订阅成功！',
      showCancel: false,
      success: () => {
        uni.switchTab({ url: '/pages/mine/index' });
      }
    });
  } catch (error) {
    uni.hideLoading();
    uni.showToast({ title: '支付失败', icon: 'none' });
  }
}

function goBack() {
  const pages = getCurrentPages();
  if (pages.length > 1) {
    uni.navigateBack();
  } else {
    uni.switchTab({ url: '/pages/member/index' });
  }
}
</script>

<style scoped>
.page {
  min-height: 100vh;
  background: #f5f5f5;
}

.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 88rpx;
  padding-top: env(safe-area-inset-top);
  background: #ffffff;
  border-bottom: 1px solid #e5e7eb;
  z-index: 100;
}

.nav-content {
  height: 100%;
  display: flex;
  align-items: center;
  padding: 0 24rpx;
}

.nav-left {
  width: 80rpx;
  display: flex;
  align-items: center;
}

.back-icon {
  font-size: 36rpx;
  color: #333;
}

.page-title {
  flex: 1;
  text-align: center;
  font-size: 32rpx;
  font-weight: 500;
  color: #333;
  margin-right: 80rpx;
}

.content {
  padding-top: calc(120rpx + env(safe-area-inset-top));
  padding-left: 32rpx;
  padding-right: 32rpx;
}

.order-card {
  background: #ffffff;
  border-radius: 16rpx;
  padding: 32rpx;
  margin-bottom: 32rpx;
}

.order-title {
  font-size: 28rpx;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 24rpx;
  display: block;
}

.order-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16rpx 0;
  border-bottom: 1px solid #f3f4f6;
}

.order-info:last-child {
  border-bottom: none;
}

.order-info.highlight {
  margin-top: 16rpx;
  padding-top: 24rpx;
  border-top: 2rpx dashed #e5e7eb;
  border-bottom: none;
}

.info-label {
  font-size: 26rpx;
  color: #9ca3af;
}

.info-value {
  font-size: 26rpx;
  color: #1f2937;
}

.info-value.price {
  font-size: 36rpx;
  font-weight: 700;
  color: #ef4444;
}

.payment-section {
  background: #ffffff;
  border-radius: 16rpx;
  padding: 32rpx;
  margin-bottom: 32rpx;
}

.section-title {
  font-size: 28rpx;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 24rpx;
  display: block;
}

.payment-methods {
  display: flex;
  flex-direction: column;
  gap: 16rpx;
}

.payment-method {
  display: flex;
  align-items: center;
  padding: 24rpx;
  background: #f9fafb;
  border: 3rpx solid #e5e7eb;
  border-radius: 12rpx;
  transition: all 0.3s;
}

.payment-method.active {
  border-color: #667eea;
  background: #f0f2ff;
}

.method-radio {
  width: 40rpx;
  height: 40rpx;
  border: 3rpx solid #d1d5db;
  border-radius: 50%;
  margin-right: 16rpx;
  display: flex;
  align-items: center;
  justify-content: center;
}

.payment-method.active .method-radio {
  border-color: #667eea;
}

.radio-inner {
  width: 24rpx;
  height: 24rpx;
  background: #667eea;
  border-radius: 50%;
}

.method-icon {
  font-size: 36rpx;
  margin-right: 12rpx;
}

.method-name {
  font-size: 28rpx;
  color: #1f2937;
  flex: 1;
}

.method-badge {
  font-size: 22rpx;
  color: #ffffff;
  background: #10b981;
  padding: 4rpx 12rpx;
  border-radius: 8rpx;
  margin-left: 8rpx;
}

.wechat-notice {
  display: flex;
  align-items: center;
  padding: 16rpx 20rpx;
  background: #ecfdf5;
  border: 1rpx solid #a7f3d0;
  border-radius: 10rpx;
  margin-bottom: 20rpx;
}

.wechat-notice-icon {
  font-size: 32rpx;
  margin-right: 12rpx;
}

.wechat-notice-text {
  font-size: 24rpx;
  color: #065f46;
}

.actions {
  display: flex;
  gap: 24rpx;
  margin-bottom: 32rpx;
}

.btn-primary,
.btn-secondary {
  flex: 1;
  height: 88rpx;
  border-radius: 44rpx;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30rpx;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  color: #ffffff;
}

.btn-secondary {
  background: #ffffff;
  color: #6b7280;
  border: 2rpx solid #e5e7eb;
}

.tips {
  background: #fef3c7;
  border-radius: 16rpx;
  padding: 24rpx;
  margin-bottom: 48rpx;
}

.tips-title {
  font-size: 24rpx;
  font-weight: 600;
  color: #92400e;
  display: block;
  margin-bottom: 12rpx;
}

.tips-text {
  font-size: 22rpx;
  color: #78350f;
  display: block;
  margin-bottom: 6rpx;
}
</style>