vmall/apps/mall/pages/seckill.vue

<script setup lang="ts">
import { t as pick } from "@vmall/shared";
import type { PublicFlashSaleItem, PublicFlashSaleSession } from "@vmall/shared";

const { locale, t } = useI18n();
const { $api } = useNuxtApp();
const cart = useCartStore();
const sessions = ref<PublicFlashSaleSession[]>([]);
const activeSessionIndex = ref(0);
const remainingSeconds = ref(0);
const loading = ref(true);
const addingSkuId = ref("");
const error = ref("");
let countdownTimer: ReturnType<typeof setInterval> | undefined;

const breadcrumb = computed(() => [
  { label: t("stores.breadcrumbHome"), to: "/" },
  { label: t("marketing.seckillBreadcrumb") },
]);

const activeSession = computed<PublicFlashSaleSession | null>(
  () => sessions.value[activeSessionIndex.value] ?? sessions.value[0] ?? null,
);

function updateCountdown(): void {
  const session = activeSession.value;
  if (!session) {
    remainingSeconds.value = 0;
    return;
  }
  remainingSeconds.value = Math.max(
    0,
    Math.ceil((new Date(session.ends_at).getTime() - Date.now()) / 1000),
  );
}

function formatCountdown(seconds: number): string {
  const h = Math.floor(seconds / 3600);
  const m = Math.floor((seconds % 3600) / 60);
  const s = seconds % 60;
  const p = (n: number): string => String(n).padStart(2, "0");
  return `${p(h)}:${p(m)}:${p(s)}`;
}

function soldPct(item: PublicFlashSaleItem): number {
  const total = item.sold_count + item.reserved_stock;
  if (total <= 0) return 100;
  return Math.round((item.sold_count / total) * 100);
}

// The listing price is display only: the shopper adds the SKU to the cart and
// checkout resolves the authoritative price server-side.
async function addToCart(item: PublicFlashSaleItem): Promise<void> {
  addingSkuId.value = item.sku_id;
  error.value = "";
  try {
    await $api.addCartItem(item.sku_id, 1);
    await cart.refresh();
  } catch {
    error.value = t("marketing.grabFailed");
  } finally {
    addingSkuId.value = "";
  }
}

async function load(): Promise<void> {
  loading.value = true;
  try {
    sessions.value = await $api.listFlashSales();
    activeSessionIndex.value = 0;
    updateCountdown();
  } catch {
    sessions.value = [];
  } finally {
    loading.value = false;
  }
}

onMounted(async () => {
  await load();
  countdownTimer = setInterval(updateCountdown, 1000);
});

onBeforeUnmount(() => {
  if (countdownTimer) clearInterval(countdownTimer);
});
</script>

<template>
  <div class="min-h-screen bg-bg pb-14 font-sans text-text">
    <UiBreadcrumb :items="breadcrumb" />
    <section class="mx-auto max-w-mall bg-surface px-4">
      <header class="border border-border border-b-0 bg-bg px-4 py-3.5"><h1 class="m-0 border-l-[3px] border-primary pl-2.5 text-[17px] font-medium">{{ t("marketing.seckillTitle") }}</h1></header>
      <div class="grid grid-cols-2 border border-border border-b-0 sm:grid-cols-4" role="tablist">
        <button v-for="(session, index) in sessions" :key="session.id" type="button" class="flex min-h-[70px] cursor-pointer flex-col items-center justify-center border-0 border-r border-border bg-surface px-2 text-sm last:border-r-0" :class="index === activeSessionIndex ? 'bg-primary-soft text-primary' : ''" role="tab" :aria-selected="index === activeSessionIndex" @click="activeSessionIndex = index; updateCountdown()">
          <strong>{{ pick(session.label, locale) }}</strong><span class="text-xs text-muted">{{ index === activeSessionIndex ? t("marketing.currentSession") : t("marketing.upcoming") }}</span>
        </button>
      </div>
      <p v-if="activeSession" class="m-0 border border-border bg-bg px-4 py-3 text-center text-lg font-semibold text-primary" aria-live="polite">{{ t("marketing.countdown", { time: formatCountdown(remainingSeconds) }) }}</p>
      <p v-if="error" class="my-4 border border-danger/30 bg-danger/10 px-3.5 py-2.5 text-danger" role="alert">{{ error }}</p>
      <div v-if="loading" class="py-6 text-muted">{{ t("common.loading") }}</div>
      <div v-else-if="activeSession && activeSession.items.length" class="grid gap-4 py-5 [grid-template-columns:repeat(auto-fill,minmax(220px,1fr))]">
        <VCard v-for="item in activeSession.items" :key="item.id" :padded="false" class="min-w-0 overflow-hidden">
          <NuxtLink :to="`/goods/${item.product_slug}`" class="flex h-52 items-center justify-center bg-bg"><img class="h-full w-full object-contain" :src="item.image || '/mock/product-1.svg'" :alt="pick(item.product_name, locale)" loading="lazy" /></NuxtLink>
          <div class="p-3.5">
            <NuxtLink :to="`/goods/${item.product_slug}`" class="line-clamp-2 font-medium hover:text-primary">{{ pick(item.product_name, locale) }}</NuxtLink>
            <p class="my-2 flex items-center gap-2"><span class="text-lg font-semibold text-primary"><PriceText :amount-minor="item.sale_price_minor" :currency="item.currency" /></span><s class="text-sm text-muted"><PriceText :amount-minor="item.original_price_minor" :currency="item.original_currency" /></s></p>
            <div class="flex items-center gap-2 text-xs text-muted"><div class="h-2 flex-1 overflow-hidden rounded-full bg-bg"><span class="block h-full bg-primary" :style="{ width: `${soldPct(item)}%` }"></span></div><span>{{ t("marketing.progress", { n: soldPct(item) }) }}</span></div>
            <p class="my-2 text-sm text-muted">{{ t("marketing.stock", { n: item.reserved_stock }) }}</p>
            <VBtn class="w-full" variant="primary" type="button" :disabled="item.reserved_stock <= 0 || addingSkuId === item.sku_id" @click="addToCart(item)">{{ addingSkuId === item.sku_id ? t("common.loading") : t("marketing.buyNow") }}</VBtn>
          </div>
        </VCard>
      </div>
      <UiEmptyState v-else :text="t('marketing.noSeckillProducts')" />
    </section>
  </div>
</template>