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import { computed, onMounted, ref, watch } from "vue";
import { RouterLink, useRoute, useRouter } from "vue-router";
import {
formatMoney,
parseSpecification,
type ProductDetail,
type ProductSku,
} from "@plain-journal/foundation";
import {
PjActionGroup,
PjButton,
PjPageContainer,
PjResponsiveImage,
PjStatusNotice,
PjSurface,
resolveCatalogImageDelivery,
} from "@plain-journal/ui";
import {
catalogApi,
CatalogAsyncState,
} from "../entities/catalog";
import { useBagStore } from "../entities/guest-bag";
import type { ReviewAccessContext } from "../entities/product-review";
import { useSessionStore } from "../features/customer-session";
import { ProductReviewsSection } from "../features/product-reviews";
const route = useRoute();
const router = useRouter();
const bag = useBagStore();
const session = useSessionStore();
const product = ref<ProductDetail | null>(null);
const selectedSkuId = ref<string | null>(null);
const quantity = ref(1);
const loading = ref(true);
const error = ref<string | null>(null);
const added = ref(false);
const reviewAccess = computed<ReviewAccessContext>(() => ({
authenticated: session.authenticated,
ownerId: session.profile?.id ?? null,
accessToken: session.accessToken,
}));
const activeSkus = computed(() => product.value?.skus.filter(
(sku) => sku.status === "ACTIVE",
) ?? []);
const selectedSku = computed<ProductSku | null>(() => (
activeSkus.value.find((sku) => sku.id === selectedSkuId.value)
?? activeSkus.value[0]
?? null
));
const selectedSpecs = computed(() => (
selectedSku.value ? parseSpecification(selectedSku.value.specJson) : []
));
const media = computed(() => product.value?.media.filter((item) => item.url) ?? []);
const imageIndex = computed(() => {
const raw = Number(route.query.image ?? 1);
return Number.isInteger(raw) && raw > 0 && raw <= media.value.length ? raw - 1 : 0;
});
const currentMedia = computed(() => media.value[imageIndex.value] ?? null);
async function load() {
const productId = String(route.params.productId ?? "");
loading.value = true;
error.value = null;
added.value = false;
try {
product.value = await catalogApi.getProduct(productId);
selectedSkuId.value = product.value.skus.find((sku) => sku.status === "ACTIVE")?.id ?? null;
document.title = `${product.value.title}｜素简记`;
} catch (cause) {
product.value = null;
error.value = cause instanceof Error ? cause.message : "暂时无法读取商品详情。";
} finally {
loading.value = false;
}
}
function selectImage(index: number) {
router.replace({
query: {
...route.query,
image: String(index + 1),
},
});
}
function addToBag() {
if (!product.value || !selectedSku.value) {
return;
}
bag.addItem({
productId: product.value.id,
skuId: selectedSku.value.id,
productTitle: product.value.title,
skuName: selectedSku.value.name,
unitPrice: String(selectedSku.value.salePrice),
quantity: quantity.value,
coverUrl: currentMedia.value?.url ?? product.value.media.find((item) => item.url)?.url ?? null,
});
added.value = true;
}
onMounted(load);
watch(() => route.params.productId, load);
</script>
<template>
<PjPageContainer as="section" class="product-detail-page">
<CatalogAsyncState :loading="loading" :error="error" @retry="load">
<template v-if="product">
<nav class="content-path" aria-label="当前位置">
<RouterLink to="/">素简记</RouterLink>
<span aria-hidden="true">/</span>
<RouterLink
:to="{ name: 'products', query: { category: product.category.slug } }"
>
{{ product.category.name }}
</RouterLink>
<span aria-hidden="true">/</span>
<span>{{ product.title }}</span>
</nav>
<div class="product-detail">
<div class="product-media">
<PjSurface tone="media" padding="none" class="product-media__main">
<PjResponsiveImage
v-if="currentMedia?.url"
v-bind="resolveCatalogImageDelivery(currentMedia.url)"
:alt="`${product.title}，图片 ${imageIndex + 1}`"
sizes="(max-width: 48rem) calc(100vw - 2rem), 55vw"
loading="eager"
decoding="async"
fetch-priority="high"
/>
<div v-else class="product-media__placeholder">
<span>{{ product.category.name }}</span>
<strong>{{ product.title }}</strong>
</div>
</PjSurface>
<div v-if="media.length > 1" class="product-media__list" aria-label="商品图片">
<button
v-for="(item, index) in media"
:key="item.id"
type="button"
:aria-current="index === imageIndex ? 'true' : undefined"
:aria-label="`查看第 ${index + 1} 张图片`"
@click="selectImage(index)"
>
<PjResponsiveImage
v-bind="resolveCatalogImageDelivery(item.url ?? '')"
alt=""
sizes="72px"
loading="lazy"
decoding="async"
/>
</button>
</div>
</div>
<div class="product-purchase">
<p class="product-context">
{{ product.category.name }} · {{ product.brand.name }}
</p>
<h1>{{ product.title }}</h1>
<p v-if="product.subtitle" class="product-lead">{{ product.subtitle }}</p>
<p class="product-price">
{{ formatMoney(selectedSku?.salePrice) }}
</p>
<fieldset class="sku-selector">
<legend>选择规格</legend>
<label
v-for="sku in product.skus"
:key="sku.id"
:class="{ 'is-unavailable': sku.status !== 'ACTIVE' }"
>
<input
v-model="selectedSkuId"
type="radio"
name="sku"
:value="sku.id"
:disabled="sku.status !== 'ACTIVE'"
/>
<span>
<strong>{{ sku.name }}</strong>
<small>{{ sku.status === "ACTIVE" ? formatMoney(sku.salePrice) : "暂时不可选" }}</small>
</span>
</label>
</fieldset>
<dl v-if="selectedSpecs.length" class="spec-list">
<div v-for="entry in selectedSpecs" :key="entry.label">
<dt>{{ entry.label }}</dt>
<dd>{{ entry.value }}</dd>
</div>
</dl>
<div class="purchase-action">
<p>
已选 {{ selectedSku?.name ?? "请先选择可用规格" }}，{{ quantity }} 件
</p>
<PjActionGroup align="between">
<strong>{{ formatMoney(selectedSku?.salePrice) }}</strong>
<PjButton :disabled="!selectedSku" @click="addToBag">
加入购物袋
</PjButton>
</PjActionGroup>
<p class="purchase-note">加入购物袋不锁定库存，结算时重新校验。</p>
</div>
<PjStatusNotice v-if="added" tone="success" title="已放入购物袋">
<p>商品已保存在当前设备的购物袋中。</p>
<template #actions>
<RouterLink class="text-action" to="/bag">查看购物袋</RouterLink>
</template>
</PjStatusNotice>
</div>
</div>
<section class="product-information" aria-labelledby="product-information-title">
<div>
<p class="product-context">商品说明</p>
<h2 id="product-information-title">购买之前，先把事实看清。</h2>
</div>
<div class="product-description">
<p>{{ product.description || "当前商品尚未补充完整说明。" }}</p>
<dl>
<div>
<dt>当前版本</dt>
<dd>版本 {{ product.version }}</dd>
</div>
<div>
<dt>商品状态</dt>
<dd>{{ product.status === "ACTIVE" ? "正在销售" : product.status }}</dd>
</div>
<div>
<dt>价格说明</dt>
<dd>以所选 SKU 与结算时服务端价格为准。</dd>
</div>
</dl>
</div>
</section>
<ProductReviewsSection :access="reviewAccess" :product-id="product.id" />
</template>
</CatalogAsyncState>
</PjPageContainer>
</template>
<style scoped>
.product-detail-page {
padding-block: var(--pj-space-6) var(--pj-space-8);
}
.product-detail {
display: grid;
grid-template-columns: minmax(0, 1.08fr) minmax(22rem, 0.72fr);
gap: clamp(2rem, 6vw, 7rem);
align-items: start;
}
.product-media {
min-width: 0;
}
.product-media__main {
aspect-ratio: 4 / 5;
overflow: hidden;
}
.product-media__main img {
width: 100%;
height: 100%;
object-fit: cover;
}
.product-media__placeholder {
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
width: 100%;
height: 100%;
background:
linear-gradient(
145deg,
var(--pj-surface-media-muted) 0%,
var(--pj-surface-media-highlight) 58%,
var(--pj-surface-media-shadow) 100%
);
color: var(--pj-text-secondary);
}
.product-media__placeholder strong {
margin-top: var(--pj-space-3);
color: var(--pj-text-primary);
font-size: var(--pj-font-size-lg);
}
.product-media__list {
display: flex;
gap: var(--pj-space-3);
margin-top: var(--pj-space-3);
}
.product-media__list button {
width: 4.5rem;
aspect-ratio: 1;
padding: 0;
border: 1px solid transparent;
background: var(--pj-surface-media);
cursor: pointer;
}
.product-media__list button[aria-current="true"] {
border-color: var(--pj-brand-primary-hover);
}
.product-media__list img {
width: 100%;
height: 100%;
object-fit: cover;
}
.product-purchase {
position: sticky;
top: var(--pj-space-5);
min-width: 0;
}
.product-context {
margin: 0 0 var(--pj-space-3);
color: var(--pj-text-secondary);
font-size: var(--pj-font-size-sm);
}
.product-purchase h1 {
margin: 0;
font-size: clamp(2.25rem, 4.4vw, 4.4rem);
font-weight: 520;
letter-spacing: -0.05em;
line-height: 1.02;
}
.product-lead {
max-width: 34rem;
margin-block: var(--pj-space-4);
color: var(--pj-text-secondary);
font-size: var(--pj-font-size-lg);
}
.product-price {
margin: var(--pj-space-6) 0 0;
font-size: clamp(1.5rem, 2.5vw, 2.25rem);
font-variant-numeric: tabular-nums;
}
.sku-selector {
margin: var(--pj-space-6) 0;
padding: 0;
border: 0;
}
.sku-selector legend {
margin-bottom: var(--pj-space-3);
font-weight: 650;
}
.sku-selector label {
display: block;
border-top: 1px solid var(--pj-border-subtle);
}
.sku-selector label:last-child {
border-bottom: 1px solid var(--pj-border-subtle);
}
.sku-selector label > span {
display: flex;
justify-content: space-between;
gap: var(--pj-space-4);
padding: var(--pj-space-4) 0;
cursor: pointer;
}
.sku-selector input {
position: absolute;
opacity: 0;
}
.sku-selector input:checked + span {
color: var(--pj-brand-primary-hover);
box-shadow: inset 0 -2px var(--pj-brand-primary);
}
.sku-selector input:focus-visible + span {
outline: 0.15rem solid var(--pj-focus-ring);
outline-offset: 0.15rem;
}
.sku-selector small {
color: var(--pj-text-secondary);
}
.sku-selector .is-unavailable {
color: var(--pj-text-secondary);
text-decoration: line-through;
}
.spec-list,
.product-description dl {
margin: 0;
}
.spec-list > div,
.product-description dl > div {
display: grid;
grid-template-columns: 8rem minmax(0, 1fr);
gap: var(--pj-space-4);
padding-block: var(--pj-space-3);
border-bottom: 1px solid var(--pj-border-subtle);
}
.spec-list dt,
.product-description dt {
color: var(--pj-text-secondary);
}
.spec-list dd,
.product-description dd {
min-width: 0;
margin: 0;
overflow-wrap: anywhere;
}
.purchase-action {
display: grid;
gap: var(--pj-space-3);
margin-top: var(--pj-space-6);
padding-top: var(--pj-space-4);
border-top: 1px solid var(--pj-border-strong);
}
.purchase-action > p {
margin: 0;
}
.purchase-action > p:first-child,
.purchase-note {
color: var(--pj-text-secondary);
font-size: var(--pj-font-size-sm);
}
.purchase-action strong {
font-size: var(--pj-font-size-lg);
}
.product-purchase :deep(.pj-status-notice) {
margin-top: var(--pj-space-5);
}
.product-information {
display: grid;
grid-template-columns: minmax(16rem, 0.68fr) minmax(0, 1.32fr);
gap: clamp(2rem, 6vw, 7rem);
margin-top: var(--pj-space-8);
padding-block: var(--pj-space-8);
border-top: 1px solid var(--pj-border-subtle);
}
.product-information h2 {
max-width: 15ch;
margin: 0;
font-size: clamp(1.8rem, 3vw, 3rem);
font-weight: 520;
line-height: var(--pj-line-height-tight);
}
.product-description > p {
margin-top: 0;
white-space: pre-line;
}
@media (max-width: 64rem) {
.product-detail {
grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.9fr);
gap: var(--pj-space-6);
}
}
@media (max-width: 48rem) {
.product-detail,
.product-information {
grid-template-columns: 1fr;
}
.product-purchase {
position: static;
}
.product-information {
gap: var(--pj-space-6);
}
}
@media (max-width: 32rem) {
.product-detail-page {
padding-top: var(--pj-space-5);
}
.product-purchase :deep(.pj-action-group) {
align-items: stretch;
}
.product-purchase :deep(.pj-button) {
width: 100%;
}
.spec-list > div,
.product-description dl > div {
grid-template-columns: 1fr;
gap: var(--pj-space-1);
}
}
</style>
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