vmall/apps/mall/pages/collective.vue

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

const { locale, t } = useI18n();
const { $api } = useNuxtApp();
const session = useSessionStore();
const cart = useCartStore();
const router = useRouter();
const signInThenReturn = useSignInRedirect();
const activities = ref<GroupBuyingActivityView[]>([]);
const loading = ref(true);
const error = ref("");
const workingId = ref("");
const selectedGroup = reactive<Record<string, string>>({});

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

async function load(): Promise<void> {
  loading.value = true;
  try {
    activities.value = await $api.listGroupBuyingActivities();
  } catch {
    activities.value = [];
  } finally {
    loading.value = false;
  }
}

function chosenGroup(activityId: string): string {
  return selectedGroup[activityId] ?? "";
}

function joined(activity: GroupBuyingActivityView, groupId: string): string {
  const group = activity.open_groups.find((entry) => entry.id === groupId);
  return group ? `${group.paid_member_count}/${group.required_members}` : "";
}

// Opening or joining both add the activity SKU to the cart and stash the
// intent; the server prices and validates it at checkout.
async function start(activity: GroupBuyingActivityView, open: boolean): Promise<void> {
  if (!session.isLoggedIn) {
    await signInThenReturn();
    return;
  }
  error.value = "";
  const groupId = open ? null : chosenGroup(activity.id);
  if (!open && !groupId) {
    error.value = t("marketing.chooseGroup");
    return;
  }
  workingId.value = activity.id;
  try {
    await $api.addCartItem(activity.sku_id, 1);
    // The intent is quantity-1 only, so normalise in case the SKU was already in
    // the cart or a previous attempt failed.
    await $api.updateCartItem(activity.sku_id, 1);
    await cart.refresh();
    useState<GroupBuyIntent | null>("checkout-group-intent", () => null).value = {
      activity_id: activity.id,
      sku_id: activity.sku_id,
      group_id: groupId,
    };
    await router.push("/checkout");
  } catch (err: unknown) {
    error.value =
      err instanceof ApiError ? err.message : t("marketing.groupFailed");
  } finally {
    workingId.value = "";
  }
}

onMounted(() => {
  session.hydrate();
  void load();
});
</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">
      <img class="h-[350px] w-full object-cover" src="/mock/collective-banner.svg" :alt="t('marketing.collectiveBannerAlt')" />
      <header class="mt-5 border border-border 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.collectiveTitle") }}</h1></header>
      <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="activities.length" class="grid gap-4 py-5 [grid-template-columns:repeat(auto-fill,minmax(220px,1fr))]">
        <VCard v-for="activity in activities" :key="activity.id" :padded="false" class="min-w-0 overflow-hidden">
          <NuxtLink :to="`/goods/${activity.product_slug}`" class="flex h-52 items-center justify-center bg-bg">
            <img class="h-full w-full object-contain" :src="activity.image || '/mock/product-1.svg'" :alt="pick(activity.product_name, locale)" loading="lazy" />
          </NuxtLink>
          <div class="p-3.5">
            <NuxtLink :to="`/goods/${activity.product_slug}`" class="line-clamp-2 font-medium hover:text-primary">{{ pick(activity.name, locale) }}</NuxtLink>
            <div class="mt-2 flex items-center justify-between gap-2"><span class="text-lg font-semibold text-primary"><PriceText :amount-minor="activity.group_price_minor" :currency="activity.currency" /></span><VBadge tone="red">{{ t("marketing.peopleGroup", { n: activity.required_members }) }}</VBadge></div>
            <p class="my-2 text-sm text-muted"><s><PriceText :amount-minor="activity.original_price_minor" :currency="activity.original_currency" /></s></p>
            <div v-if="activity.open_groups.length" class="grid gap-2">
              <label v-for="group in activity.open_groups" :key="group.id" class="flex cursor-pointer items-center gap-2 rounded-md border border-border p-2 text-xs has-[:checked]:border-primary has-[:checked]:bg-primary-soft">
                <input v-model="selectedGroup[activity.id]" class="h-4 w-4 accent-primary" type="radio" :name="`group-${activity.id}`" :value="group.id" />
                <span class="flex-1">{{ t("marketing.paidMembers", { n: group.paid_member_count, total: group.required_members }) }}</span>
                <span class="text-muted">{{ group.expires_at.slice(5, 16).replace('T', ' ') }}</span>
              </label>
            </div>
            <p v-else class="my-2 text-sm text-muted">{{ t("marketing.noOpenGroups") }}</p>
            <div class="mt-3 flex gap-2"><VBtn class="flex-1" variant="primary" type="button" :disabled="workingId === activity.id" @click="start(activity, true)">{{ t("marketing.openGroup") }}</VBtn><VBtn class="flex-1" type="button" :disabled="workingId === activity.id || !chosenGroup(activity.id)" @click="start(activity, false)">{{ t("marketing.joinGroup") }}</VBtn></div>
            <p v-if="chosenGroup(activity.id)" class="mt-2 text-sm text-muted">{{ joined(activity, chosenGroup(activity.id)) }}</p>
          </div>
        </VCard>
      </div>
      <UiEmptyState v-else :text="t('marketing.noCollectiveProducts')" />
    </section>
  </div>
</template>