feat(recharge): USDT 提示语明确输入货币为 VND + 新汇率 27100

- 复用 qr-image 库生成 TRC20 地址二维码（YBF 分支已在用，无需新依赖）
- u-popup 内嵌展示：地址/精确金额/QR/倒计时，可一键复制
- 每 3s 轮询 /epay_order_status，成功后刷新用户信息并自动关闭
- 新增 api.epayOrderStatus
- 后端未返回 qrcode 时回退跳转式（向后兼容）

pages/recharge.vue

@@ -13,7 +13,7 @@
       </view>
     </u-navbar>
     <view class="content">
-      <template v-if="userInfo.pay_channel == 'BC'">
+      <template v-if="userInfo.pay_channel == 'BC' && userInfo.area_id != 3">
         <view class="picker-view" @click="show = true">
           <u-input
             readonly
@@ -90,7 +90,7 @@
           </view>
         </view>
       </template>
-      <template v-if="userInfo.pay_channel == 'YBF'">
+      <template v-if="userInfo.pay_channel == 'YBF' && userInfo.area_id != 3">
         <view
           class="picker-view"
           @click="fnPicker('currency')"
@@ -184,18 +184,30 @@
           @confirm="confirmPicker"
         ></u-picker>
       </template>
-      <!-- 越南 AlinPay 在线充值 -->
+      <!-- 越南地区：银行卡 (AlinPay) / USDT (Epay) 双通道（和 PC 同步按 area_id 判断） -->
-      <template v-if="userInfo.pay_channel == 'ALIN_VN'">
+      <template v-if="userInfo.area_id == 3">
+        <view class="pay-tabs">
+          <view
+            class="pay-tab"
+            :class="{ active: payChannel === 'alin' }"
+            @click="payChannel = 'alin'"
+          >Thẻ ngân hàng</view>
+          <view
+            class="pay-tab"
+            :class="{ active: payChannel === 'epay' }"
+            @click="payChannel = 'epay'"
+          >USDT (TRC20)</view>
+        </view>
         <view class="picker-view">
           <u-input
-            placeholder="Tối thiểu 1,000,000"
+            :placeholder="payChannel === 'epay' ? 'Nhập số tiền VND (vd: 1,000,000)' : 'Tối thiểu 1,000,000'"
             color="#93979b"
             v-model="amount"
             type="number"
             border="none"
           >
             <u--text
-              :text="$lang.rechargeAmount || '充值金额'"
+              :text="payChannel === 'epay' ? ($lang.rechargeAmount || '充值金额') + ' (VND)' : ($lang.rechargeAmount || '充值金额')"
               slot="prefix"
               margin="0 3px 0 0"
               type="tips"
@@ -207,17 +219,59 @@
             class="button"
             color="#e5b932"
             :text="$lang.submit"
-            @click="submitAlin"
+            @click="payChannel === 'epay' ? submitEpay() : submitAlin()"
           ></u-button>
         </view>
         <view class="list">
           <view class="tip">
-            {{ $lang.rechargeTip }}
+            {{ payChannel === 'epay' ? 'Nhập số tiền theo VND — hệ thống tự động quy đổi sang USDT theo tỷ giá 1 USDT ≈ 27,100 VND. Thanh toán qua mạng TRC20.' : $lang.rechargeTip }}
           </view>
         </view>
       </template>
     </view>
     <view class="mb60"></view>
+
+    <!-- USDT 内嵌二维码弹窗 -->
+    <u-popup :show="epayQr.visible" mode="center" round="10" :closeOnClickOverlay="false" @close="closeEpayQr">
+      <view class="epay-qr-box">
+        <view class="epay-qr-close" @click="closeEpayQr">×</view>
+        <view class="epay-qr-title">USDT (TRC20)</view>
+        <view class="epay-qr-status" :class="epayQr.statusClass">{{ epayQr.statusText }}</view>
+
+        <view class="epay-qr-img-wrap">
+          <u--image v-if="epayQr.qrDataUrl" :src="epayQr.qrDataUrl" width="340rpx" height="340rpx" mode="scaleToFill"></u--image>
+        </view>
+
+        <view class="epay-qr-field">
+          <view class="epay-qr-label">Số tiền USDT (chính xác)</view>
+          <view class="epay-qr-value amount">
+            <text>{{ epayQr.data.usdt_amount }} USDT</text>
+            <view class="epay-qr-btn" @click="copyEpayText(epayQr.data.usdt_amount, 'amount')">
+              {{ epayQr.copied === 'amount' ? '✓' : 'Copy' }}
+            </view>
+          </view>
+        </view>
+
+        <view class="epay-qr-field">
+          <view class="epay-qr-label">Địa chỉ ví (TRC20)</view>
+          <view class="epay-qr-value addr">
+            <text>{{ epayQr.data.usdt_address }}</text>
+            <view class="epay-qr-btn" @click="copyEpayText(epayQr.data.usdt_address, 'addr')">
+              {{ epayQr.copied === 'addr' ? '✓' : 'Copy' }}
+            </view>
+          </view>
+        </view>
+
+        <view class="epay-qr-meta">
+          <text>≈ {{ epayQr.data.vnd_amount }} VND</text>
+          <text class="epay-qr-countdown">⏱ {{ epayQr.countdownText }}</text>
+        </view>
+
+        <view class="epay-qr-tip">
+          ⚠ Vui lòng chuyển chính xác số tiền. Sai số sẽ không thể xác định đơn hàng!
+        </view>
+      </view>
+    </u-popup>
   </view>
 </template>
 
@@ -240,6 +294,20 @@ export default {
       amount: "",
       currency: { name: "", key: "" },
       coin_type: { name: "", key: "" },
+      // 越南地区在线支付通道：'alin'(银行卡) | 'epay'(USDT)
+      payChannel: "alin",
+      // 内嵌 USDT 二维码弹窗状态
+      epayQr: {
+        visible: false,
+        data: { usdt_address: "", usdt_amount: "", vnd_amount: "", expires_at: 0, order_sn: "" },
+        qrDataUrl: "",
+        countdownText: "",
+        statusText: "",
+        statusClass: "waiting",
+        copied: "",
+      },
+      _epayPollTimer: null,
+      _epayCountdownTimer: null,
     };
   },
   computed: {
@@ -409,11 +477,162 @@ export default {
           this.$toastHide();
         });
     },
+    submitEpay() {
+      if (!this.amount || this.amount <= 0) {
+        this.$toast({ message: 'Vui lòng nhập số tiền', duration: 2000 });
+        return;
+      }
+      if (this.amount < 1000000) {
+        this.$toast({ message: 'Số tiền tối thiểu là 1,000,000', duration: 2000 });
+        return;
+      }
+      const params = {
+        user_id: this.userInfo.id,
+        price: this.amount,
+        client: 3,
+        username: this.userInfo.username,
+        pay_type: 'usdt',
+      };
+      this.$toast({
+        type: "loading",
+        message: `${this.$lang.submit}...`,
+        duration: 200000,
+      });
+      this.$api
+        .epayDeposit(params)
+        .then((res) => {
+          const d = res.Data || {};
+          if (d.status == 1 && d.qrcode) {
+            this.openEpayQr(d.qrcode);
+          } else if (d.status == 1 && d.url) {
+            // 后端未升级时兼容跳转
+            const isiOS = !!navigator.userAgent.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/);
+            if (isiOS) window.location.href = d.url; else window.open(d.url, "_blank");
+          } else {
+            this.$toast({ message: d.message || 'Nạp thất bại', duration: 2000 });
+          }
+        })
+        .catch((err) => {
+          console.log(err);
+        })
+        .finally(() => {
+          this.$toastHide();
+        });
+    },
+    openEpayQr(qrcode) {
+      this.epayQr.data = qrcode;
+      this.epayQr.statusText = "Đang chờ thanh toán...";
+      this.epayQr.statusClass = "waiting";
+      this.epayQr.copied = "";
+      // 生成二维码图片（复用现有 qr-image 库）
+      try {
+        this.epayQr.qrDataUrl =
+          "data:image/png;base64," +
+          uni.arrayBufferToBase64(qr.imageSync(qrcode.usdt_address, { margin: 2 }));
+      } catch (e) {
+        this.epayQr.qrDataUrl = "";
+      }
+      this.epayQr.visible = true;
+      this.startEpayCountdown();
+      this.startEpayPolling();
+    },
+    startEpayCountdown() {
+      const tick = () => {
+        const left = Math.max(0, this.epayQr.data.expires_at - Math.floor(Date.now() / 1000));
+        const m = Math.floor(left / 60);
+        const s = left % 60;
+        this.epayQr.countdownText = (m < 10 ? "0" : "") + m + ":" + (s < 10 ? "0" : "") + s;
+        if (left <= 0) {
+          this.epayQr.statusText = "Đơn hàng đã hết hạn";
+          this.epayQr.statusClass = "expired";
+          this.stopEpayTimers();
+        }
+      };
+      tick();
+      this._epayCountdownTimer = setInterval(tick, 1000);
+    },
+    startEpayPolling() {
+      const poll = () => {
+        if (!this.epayQr.visible || !this.epayQr.data.order_sn) return;
+        this.$api
+          .epayOrderStatus({
+            user_id: this.userInfo.id,
+            order_sn: this.epayQr.data.order_sn,
+          })
+          .then((res) => {
+            const d = res.Data || {};
+            if (d.status == 1) {
+              this.epayQr.statusText = "Thanh toán thành công!";
+              this.epayQr.statusClass = "success";
+              this.stopEpayTimers();
+              this.$store.dispatch("app/getUserInfo");
+              setTimeout(() => this.closeEpayQr(), 2500);
+            } else if (d.status == 2) {
+              this.epayQr.statusText = "Đơn hàng đã hết hạn";
+              this.epayQr.statusClass = "expired";
+              this.stopEpayTimers();
+            }
+          })
+          .catch(() => {});
+      };
+      this._epayPollTimer = setInterval(poll, 3000);
+      setTimeout(poll, 1000);
+    },
+    copyEpayText(text, tag) {
+      uni.setClipboardData({
+        data: String(text),
+        success: () => {
+          this.epayQr.copied = tag;
+          setTimeout(() => {
+            if (this.epayQr.copied === tag) this.epayQr.copied = "";
+          }, 1500);
+        },
+      });
+    },
+    closeEpayQr() {
+      this.epayQr.visible = false;
+      this.stopEpayTimers();
+    },
+    stopEpayTimers() {
+      if (this._epayPollTimer) {
+        clearInterval(this._epayPollTimer);
+        this._epayPollTimer = null;
+      }
+      if (this._epayCountdownTimer) {
+        clearInterval(this._epayCountdownTimer);
+        this._epayCountdownTimer = null;
+      }
+    },
+  },
+  beforeDestroy() {
+    this.stopEpayTimers();
   },
 };
 </script>
 
 <style lang="scss" scoped>
+.pay-tabs {
+  display: flex;
+  padding: 20rpx 30rpx 0;
+  gap: 15rpx;
+}
+.pay-tab {
+  flex: 1;
+  text-align: center;
+  padding: 18rpx 0;
+  color: #93979b;
+  background: rgba(255, 255, 255, 0.04);
+  border: 1rpx solid #2a3448;
+  border-radius: 8rpx;
+  font-size: 26rpx;
+  transition: all 0.2s;
+  &.active {
+    background: linear-gradient(to right, #e5b932, #c5971e);
+    color: #0b1520;
+    font-weight: bold;
+    border-color: #e5b932;
+  }
+}
 .recharge {
   background: #0b1520;
   width: 100%;
@@ -483,4 +702,111 @@ export default {
     }
   }
 }
+
+/* ============ 内嵌 USDT 二维码弹窗 ============ */
+.epay-qr-box {
+  width: 600rpx;
+  padding: 30rpx 34rpx 24rpx;
+  background: #1a1206;
+  border: 1rpx solid #907545;
+  border-radius: 10px;
+  color: #e5b932;
+  box-sizing: border-box;
+  position: relative;
+}
+.epay-qr-close {
+  position: absolute;
+  top: 8rpx;
+  right: 18rpx;
+  color: #aaa;
+  font-size: 40rpx;
+  line-height: 1;
+  padding: 10rpx 16rpx;
+}
+.epay-qr-title {
+  text-align: center;
+  font-size: 30rpx;
+  font-weight: bold;
+  margin-bottom: 8rpx;
+}
+.epay-qr-status {
+  text-align: center;
+  font-size: 24rpx;
+  margin-bottom: 16rpx;
+  &.waiting { color: #e5b932; }
+  &.success { color: #7cd992; }
+  &.expired { color: #e74c3c; }
+}
+.epay-qr-img-wrap {
+  width: 340rpx;
+  height: 340rpx;
+  margin: 0 auto 24rpx;
+  background: #fff;
+  padding: 14rpx;
+  border-radius: 8rpx;
+  box-sizing: content-box;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+.epay-qr-field {
+  margin-bottom: 16rpx;
+}
+.epay-qr-label {
+  color: #bbb;
+  font-size: 22rpx;
+  margin-bottom: 6rpx;
+}
+.epay-qr-value {
+  display: flex;
+  align-items: center;
+  gap: 12rpx;
+  background: rgba(0, 0, 0, 0.35);
+  border: 1rpx solid #5a4323;
+  border-radius: 6rpx;
+  padding: 12rpx 14rpx;
+  font-size: 24rpx;
+  word-break: break-all;
+  &.amount {
+    color: #fff;
+    font-weight: bold;
+    font-size: 28rpx;
+  }
+  &.addr {
+    color: #e5b932;
+    font-family: 'Courier New', monospace;
+    font-size: 20rpx;
+  }
+  text {
+    flex: 1;
+  }
+}
+.epay-qr-btn {
+  flex-shrink: 0;
+  background: #c5971e;
+  color: #161107;
+  font-size: 22rpx;
+  padding: 6rpx 18rpx;
+  border-radius: 4rpx;
+  font-weight: bold;
+}
+.epay-qr-meta {
+  display: flex;
+  justify-content: space-between;
+  color: #bbb;
+  font-size: 24rpx;
+  margin: 20rpx 0 12rpx;
+}
+.epay-qr-countdown {
+  color: #e5b932;
+  font-weight: bold;
+}
+.epay-qr-tip {
+  color: #e74c3c;
+  font-size: 22rpx;
+  text-align: center;
+  line-height: 1.5;
+  margin-top: 14rpx;
+  opacity: 0.85;
+}
 </style>

request/api.js

@@ -57,6 +57,14 @@ let api = {
   alinDeposit: async (params) => {
     return await ajax.post("/alin_online_order", params);
   },
+  // 彩虹易支付充值（USDT TRC20 / 支付宝 / 微信 等，默认 usdt）
+  epayDeposit: async (params) => {
+    return await ajax.post("/epay_online_order", params);
+  },
+  // 易支付订单状态轮询（内嵌二维码支付用）
+  epayOrderStatus: async (params) => {
+    return await ajax.post("/epay_order_status", params);
+  },
   // 越南银行卡提现
   applyWithdrawBank: async (params) => {
     return await ajax.post("/apply_withdraw_bank", params);