tydata-webview-v2/src/components/Payment.vue

<template>
    <van-popup
        v-model:show="show"
        position="bottom"
        class="flex flex-col justify-between p-6"
        :style="{ height: '50%' }"
    >
        <div class="text-center">
            <h3 class="text-lg font-bold">支付</h3>
        </div>
        <div class="text-center">
            <div class="font-bold text-xl">{{ data.product_name }}</div>
            <div class="text-3xl text-red-500 font-bold">
                <!-- 显示原价和折扣价格 -->
                <div
                    v-if="discountPrice"
                    class="line-through text-gray-500 mt-4"
                    :class="{ 'text-2xl': discountPrice }"
                >
                    ¥ {{ data.sell_price }}
                </div>
                <div>
                    ¥
                    {{
                        discountPrice
                            ? (data.sell_price * 0.2).toFixed(2)
                            : data.sell_price
                    }}
                </div>
            </div>
            <!-- 仅在折扣时显示活动说明 -->
            <div v-if="discountPrice" class="text-sm text-red-500 mt-1">
                活动价：2折优惠
            </div>
        </div>
        <!-- 支付方式选择 -->
        <div class="">
            <van-cell-group inset>
                <van-cell
                    v-if="isWeChat"
                    title="微信支付"
                    clickable
                    @click="selectedPaymentMethod = 'wechat'"
                >
                    <template #icon>
                        <van-icon
                            size="24"
                            name="wechat-pay"
                            color="#1AAD19"
                            class="mr-2"
                        />
                    </template>
                    <template #right-icon>
                        <van-radio
                            v-model="selectedPaymentMethod"
                            name="wechat"
                        />
                    </template>
                </van-cell>

                <!-- 支付宝支付 -->
                <van-cell
                    v-else
                    title="支付宝支付"
                    clickable
                    @click="selectedPaymentMethod = 'alipay'"
                >
                    <template #icon>
                        <van-icon
                            size="24"
                            name="alipay"
                            color="#00A1E9"
                            class="mr-2"
                        />
                    </template>
                    <template #right-icon>
                        <van-radio
                            v-model="selectedPaymentMethod"
                            name="alipay"
                        />
                    </template>
                </van-cell>
            </van-cell-group>
        </div>
        <!-- 确认按钮 -->
        <div class="">
            <van-button class="w-full" round type="primary" @click="getPayment"
                >确认支付</van-button
            >
        </div>
    </van-popup>
</template>

<script setup>
import { ref, defineProps } from "vue";
const { isWeChat } = useEnv();

const props = defineProps({
    data: {
        type: Object,
        required: true,
    },
    id: {
        type: String,
        required: true,
    },
    type: {
        type: String,
        required: true,
    },
});
const show = defineModel();
const selectedPaymentMethod = ref(isWeChat.value ? "wechat" : "alipay");
onMounted(() => {
    if (isWeChat.value) {
        selectedPaymentMethod.value = "wechat";
    } else {
        selectedPaymentMethod.value = "alipay";
    }
});
const orderNo = ref("");
const router = useRouter();
const discountPrice = ref(false); // 是否应用折扣
onMounted(() => {
    if (isWeChat.value) {
        selectedPaymentMethod.value = "wechat";
    } else {
        selectedPaymentMethod.value = "alipay";
    }
});

async function getPayment() {
    const { data, error } = await useApiFetch("/pay/payment")
        .post({
            id: props.id,
            pay_method: selectedPaymentMethod.value,
            pay_type: props.type,
        })
        .json();

    if (data.value && !error.value) {
        if (selectedPaymentMethod.value === "alipay") {
            orderNo.value = data.value.data.order_no;
            // 存储订单ID以便支付宝返回时获取
            const prepayUrl = data.value.data.prepay_id;
            const paymentForm = document.createElement("form");
            paymentForm.method = "POST";
            paymentForm.action = prepayUrl;
            paymentForm.style.display = "none";
            document.body.appendChild(paymentForm);
            paymentForm.submit();
        } else {
            const payload = data.value.data.prepay_data;
            WeixinJSBridge.invoke(
                "getBrandWCPayRequest",
                payload,
                function (res) {
                    if (res.err_msg == "get_brand_wcpay_request:ok") {
                        // 支付成功，直接跳转到结果页面
                        router.push({
                            path: "/payment/result",
                            query: { orderNo: data.value.data.order_no },
                        });
                    }
                }
            );
        }
    }
    show.value = false;
}
</script>

<style scoped></style>