---
import Layout from "../layouts/Layout.astro"
import { getBrands, getYears, type BrandEntry } from "../lib/api"

let sidebarBrands: BrandEntry[] = []
let yearChips: number[] = []

try {
  sidebarBrands = (await getBrands({ size: 300, only_with_articles: 1, featured: 1 }))
    .filter((b) => b.id && b.name)
    .sort((a, b) => a.name.localeCompare(b.name))
} catch {}

let yearSeed = [2026, 2025, 2024, 2023, 2022, 2021]
try {
  const ys = await getYears(30)
  if (ys.length) yearChips = ys
} catch {}
if (!yearChips.length) yearChips = yearSeed
---

<Layout title="All Shows — Portfolio Studio">
  <!-- 首屏绘制前同步侧边栏折叠状态，杜绝刷新时的闪烁 -->
  <script is:inline>
    try {
      if (localStorage.getItem("showsaside-collapsed") === "1") {
        document.documentElement.classList.add("showsaside-collapsed")
      }
    } catch (e) {}
  </script>

  <div class="showsroot w-full" x-data="showsPage()">
    <!-- 顶部：极简眉头 -->
    <header class="showshead">
      <div>
        <nav class="showscrumb" aria-label="Breadcrumb">
          <a href="/">Home</a>
          <span class="sep" aria-hidden="true">/</span>
          <a href="/shows">Runway Archive</a>
          <span class="sep" aria-hidden="true">/</span>
          <span class="cur" aria-current="page" x-text="crumbYear"></span>
        </nav>
        <h1 class="showsh1">All Shows</h1>
      </div>
    </header>

    <!-- 已激活筛选 pills -->
    <div class="showspills" x-show="pills.length > 0" x-cloak>
      <template x-for="(p, i) in pills" :key="i">
        <span class="showspill">
          <span x-text="p.label"></span>
          <button class="x" type="button" @click="p.clear()">×</button>
        </span>
      </template>
    </div>

    <!-- 主体：左 sidebar + 右 4 列商品 grid -->
    <div class="showsbody">
      <!-- LEFT SIDEBAR -->
      <aside class="showsaside" :class="{ 'is-collapsed': asideCollapsed }">
        <div class="showsaside-head">
          <h2 class="showsaside-h">REFINE</h2>
          <button class="showsaside-toggle" type="button" aria-label="折叠/展开筛选" @click="toggleAside()">
            <svg viewBox="0 0 12 12" width="11" height="11" aria-hidden="true">
              <path d="M7.5 3l-4 3 4 3" stroke="currentColor" fill="none" stroke-width="1.6" stroke-linecap="round" stroke-linejoin="round"/>
            </svg>
          </button>
        </div>

        <div class="showsaside-body" x-show="!asideCollapsed">
          <!-- Designer 多选 -->
          <section class="showsg">
            <header class="showsg-h" @click="toggleGroup('designers')">
              <span>DESIGNERS</span>
              <span class="showsg-right">
                <span class="showsg-count" x-text="selectedBrands.length">0</span>
                <span class="showsg-chev" :class="{ 'is-collapsed': collapsedGroups.designers }">
                  <svg viewBox="0 0 12 12" width="11" height="11"><path d="M2.5 4.5l3.5 3 3.5-3" stroke="currentColor" fill="none" stroke-width="1.4" stroke-linecap="round" stroke-linejoin="round"/></svg>
                </span>
              </span>
            </header>
            <div class="showsg-b" x-show="!collapsedGroups.designers">
              <input class="showssearch" placeholder="Search designer…" autocomplete="off" x-model.debounce.150ms="keyword" />
              <ul class="showschecks">
                <li>
                  <!-- Letter Header -->
                  <template x-if="item.type === 'letter'">
                    <div class="letter-head" x-text="item.letter"></div>
                  </template>

                  <!-- Brand Item -->
                  <template x-if="item.type === 'brand'">
                    <label class="flex items-center gap-2 w-full cursor-pointer">
                      <input 
                        type="checkbox" 
                        :value="item.id" 
                        :checked="selectedBrands.includes(item.id)" 
                        @change="toggleBrand(item.id)"
                      >
                      <span x-text="item.name"></span>
                      <span class="ct" x-text="item.count ? item.count : ''"></span>
                    </label>
                  </template>
                </li>
              </ul>
              <a class="showsmore" x-show="hasMoreBrands && !keyword" @click="brandsExpanded = !brandsExpanded" x-text="brandsExpanded ? 'Show fewer ▴' : `Show all ${allBrands.length} designers ▾`"></a>
            </div>
          </section>

          <!-- Collection type -->
          <section class="showsg">
            <header class="showsg-h" @click="toggleGroup('collection')">
              <span>COLLECTION</span>
              <span class="showsg-chev" :class="{ 'is-collapsed': collapsedGroups.collection }">
                <svg viewBox="0 0 12 12" width="11" height="11"><path d="M2.5 4.5l3.5 3 3.5-3" stroke="currentColor" fill="none" stroke-width="1.4" stroke-linecap="round" stroke-linejoin="round"/></svg>
              </span>
            </header>
            <div class="showsg-b" x-show="!collapsedGroups.collection">
              <ul class="showschecks showschecks--flat">
                <li><label><input type="checkbox" value="rtw" x-model="selectedCt" @change="refreshFilter()" /> <span>Ready-to-Wear</span></label></li>
                <li><label><input type="checkbox" value="menswear" x-model="selectedCt" @change="refreshFilter()" /> <span>Menswear</span></label></li>
                <li><label><input type="checkbox" value="couture" x-model="selectedCt" @change="refreshFilter()" /> <span>Couture</span></label></li>
                <li><label><input type="checkbox" value="resort" x-model="selectedCt" @change="refreshFilter()" /> <span>Resort</span></label></li>
                <li><label><input type="checkbox" value="pre_fall" x-model="selectedCt" @change="refreshFilter()" /> <span>Pre-Fall</span></label></li>
              </ul>
            </div>
          </section>

          <!-- Season -->
          <section class="showsg">
            <header class="showsg-h" @click="toggleGroup('season')">
              <span>SEASON</span>
              <span class="showsg-chev" :class="{ 'is-collapsed': collapsedGroups.season }">
                <svg viewBox="0 0 12 12" width="11" height="11"><path d="M2.5 4.5l3.5 3 3.5-3" stroke="currentColor" fill="none" stroke-width="1.4" stroke-linecap="round" stroke-linejoin="round"/></svg>
              </span>
            </header>
            <div class="showsg-b" x-show="!collapsedGroups.season">
              <ul class="showschecks showschecks--flat">
                <li><label><input type="checkbox" value="spring" x-model="selectedSeason" @change="refreshFilter()" /> <span>Spring / Summer</span></label></li>
                <li><label><input type="checkbox" value="fall" x-model="selectedSeason" @change="refreshFilter()" /> <span>Fall / Winter</span></label></li>
              </ul>
            </div>
          </section>

          <!-- Year -->
          <section class="showsg">
            <header class="showsg-h" @click="toggleGroup('year')">
              <span>YEAR</span>
              <span class="showsg-chev" :class="{ 'is-collapsed': collapsedGroups.year }">
                <svg viewBox="0 0 12 12" width="11" height="11"><path d="M2.5 4.5l3.5 3 3.5-3" stroke="currentColor" fill="none" stroke-width="1.4" stroke-linecap="round" stroke-linejoin="round"/></svg>
              </span>
            </header>
            <div class="showsg-b" x-show="!collapsedGroups.year">
              <ul class="showschecks showschecks--flat">
                {yearChips.map((y) => (
                  <li><label><input type="checkbox" value={String(y)} x-model="selectedYear" @change="refreshFilter()" /> <span>{y}</span></label></li>
                ))}
              </ul>
            </div>
          </section>

          <button class="showsclear" type="button" @click="clearAll()">Clear all ×</button>
        </div>
      </aside>

      <!-- MAIN GRID -->
      <main class="showsmain">
        <div class="showsgrid" :class="{ 'is-loading': loading }">
          
          <!-- 骨架屏：结构与真实卡片完全一致，loading 期间占位，杜绝 加载中→数据完成 的尺寸抖动 -->
          <template x-if="loading && items.length === 0">
            <template x-for="i in skeletonCount" :key="'skel-'+i">
              <div class="showscard showscard--skel" aria-hidden="true">
                <div class="showscard-left">
                  <div class="showscard-img"></div>
                </div>
                <div class="showscard-right">
                  <div class="showscard-info">
                    <div class="showsline h-[41px] mb-[10px] rounded-[2px]"></div>
                    <div class="showsline h-[29px] mb-[14px] rounded-[2px]"></div>
                    <div class="showsline h-[38px] rounded-[2px]"></div>
                  </div>
                  <div class="showscard-strip">
                    <div class="showscard-thumb"></div>
                    <div class="showscard-thumb"></div>
                    <div class="showscard-thumb"></div>
                    <div class="showscard-thumb"></div>
                    <div class="showscard-thumb"></div>
                  </div>
                </div>
              </div>
            </template>
          </template>

          <!-- Empty State -->
          <template x-if="!loading && items.length === 0">
            <div class="showsempty">No shows match the current filters · 暂无符合条件的秀场</div>
          </template>

          <!-- Card List -->
          <template x-for="it in items" :key="it.id">
            <a class="showscard" :href="`/article?id=${it.id}`" :aria-label="`${it.brand_name} ${it.title}`">
              <div class="showscard-left">
                <div class="showscard-img" :class="{ 'is-loaded': it._imgLoaded }">
                  <span class="showsspin" aria-hidden="true" x-html="SPIN_SVG"></span>
                  <img :src="toAbsUrl(it.cover)" :alt="it.title" loading="lazy" @load="it._imgLoaded = true" @error="it._imgLoaded = true" :class="{ 'is-loaded': it._imgLoaded }" />
                  <!-- <span class="showsbadge" x-show="isNewAdded(it.published_at)">New</span> -->
                </div>
              </div>
              <div class="showscard-right">
                <div class="showscard-info">
                  <h3 class="showscard-title" x-text="it.title"></h3>
                  <p class="showscard-meta" x-text="`${it.season_code || it.year || ''} · ${ctLabel(it.collection_type)} · ${it.brand_name}`"></p>
                  <div class="showscard-meta-foot">
                    <span class="showscard-meta-line"><span x-html="ICON_USER"></span><span x-text="it.brand_name"></span></span>
                    <span class="showscard-meta-line"><span x-html="ICON_DATE"></span><span x-text="fmtDate(it.published_at)"></span></span>
                  </div>
                </div>
                <div class="showscard-strip">
                  <template x-for="(slot, idx) in getCardSlots(it)" :key="idx">
                    <div class="showscard-thumb" :class="{ 'placeholder': !slot.src, 'is-loaded': slot.loaded }">
                      <span class="showsspin" aria-hidden="true" x-html="SPIN_SVG" x-show="slot.src"></span>
                      <img x-show="slot.src" :src="toAbsUrl(slot.src)" alt="" loading="lazy" @load="slot.loaded = true" @error="slot.loaded = true" :class="{ 'is-loaded': slot.loaded }" />
                      <span class="showscard-thumb-more" x-show="slot.isLast && slot.moreLabel" x-text="slot.moreLabel"></span>
                    </div>
                  </template>
                </div>
              </div>
            </a>
          </template>
        </div>

        <div class="showsloadmore-wrap" x-show="items.length > 0">
          <button class="showsloadmore" type="button" :disabled="loadingMore || isEnd" @click="loadPage(page + 1, true)" x-text="loadBtnText"></button>
        </div>
      </main>
    </div>
  </div>
</Layout>

<script id="showsbrands-data" type="application/json" set:html={JSON.stringify(sidebarBrands)}></script>

<style>
  @reference "tailwindcss";
  [x-cloak] { display: none !important; }


  /* 使用 @apply 精简并重构样式 */
  .showsroot {
    @apply m-auto max-w-[1600px] pt-7 text-[#0a0a0a];
  }

  .showshead {
    @apply flex justify-between items-end gap-6 py-5 pb-[26px] ;
  }
  .showscrumb {
    @apply inline-flex items-center gap-[10px] mb-[10px] text-[11px] tracking-[0.18em] uppercase text-[#999] no-underline;
  }
  .showscrumb a {
    @apply text-black no-underline transition-colors duration-150 hover:text-[#888];
  }
  .showscrumb .sep {
    @apply text-[#cfcfcf] select-none;
  }
  .showscrumb .cur {
    @apply text-[#999];
  }
  .showsh1 {
    @apply text-[clamp(40px,6vw,72px)] leading-[0.9] font-black tracking-[-0.02em] my-0 mb-[10px];
  }

  .showspills {
    @apply flex flex-wrap gap-2 pt-3.5;
  }
  .showspill {
    @apply inline-flex items-center gap-2 border-[1.5px] border-black p-[6px_10px] text-[10.5px] uppercase tracking-[0.14em] text-black bg-white;
  }
  .showspill .x {
    @apply inline-flex w-3.5 h-3.5 items-center justify-center border-none bg-black text-white cursor-pointer text-xs leading-none;
  }

  .showsbody {
    @apply flex gap-[36px] items-start max-md:flex-col max-md:gap-[18px];
  }

  .showsaside {
    @apply flex-none w-[240px] bg-white sticky top-5 max-h-[calc(100vh-40px)] rounded-none transition-[flex-basis] duration-250 ease-in-out flex flex-col max-md:static max-md:max-h-none max-md:w-full;
  }
  html.showsaside-collapsed .showsaside,
  .showsaside.is-collapsed {
    @apply flex-none w-[44px];
  }

  .showsaside-head {
    @apply flex items-center justify-between p-[14px_14px_12px] border-b border-black shrink-0;
  }
  .showsaside-h {
    @apply text-[11px] tracking-[0.26em] uppercase font-bold m-0 leading-none transition-opacity duration-200;
  }
  html.showsaside-collapsed .showsaside-h,
  .showsaside.is-collapsed .showsaside-h {
    @apply opacity-0 pointer-events-none w-0 overflow-hidden;
  }

  .showsaside-toggle {
    @apply appearance-none bg-white border-[1.5px] border-black w-[22px] h-[22px] inline-flex items-center justify-center cursor-pointer rounded-none text-black p-0 transition-transform duration-250 ease-in-out hover:bg-black hover:text-white;
  }
  html.showsaside-collapsed .showsaside-toggle,
  .showsaside.is-collapsed .showsaside-toggle {
    @apply ml-auto rotate-180;
  }

  .showsaside-body {
    @apply p-[14px_14px_18px] overflow-y-auto flex-1 min-h-0 [scrollbar-width:thin] [scrollbar-color:#ccc_#fff];
  }
  html.showsaside-collapsed .showsaside-body {
    @apply hidden;
  }

  .showsg {
    @apply border-t border-[#e6e6e6] py-[12px] pb-[6px] first-of-type:border-t-0 first-of-type:pt-1;
  }
  .showsg-h {
    @apply flex justify-between items-center text-[11px] tracking-[0.22em] uppercase font-bold text-black mb-2 cursor-pointer select-none;
  }
  .showsg-right {
    @apply inline-flex items-center gap-2.5;
  }
  .showsg-chev {
    @apply inline-block text-[9px] leading-none text-[#999] transition-transform duration-200 ml-1;
  }
  .showsg-chev.is-collapsed {
    @apply -rotate-90;
  }
  .showsg-count {
    @apply text-[#999] font-normal text-[10px] tracking-[0.14em];
  }

  .showssearch {
    @apply w-full border border-[#d4d4d4] p-[7px_10px] text-[11px] uppercase tracking-[0.08em] text-black rounded-none outline-none bg-[#fafafa] focus:border-black focus:bg-white;
  }

  .showschecks {
    @apply list-none mt-[10px] mb-0 p-0 max-h-[280px] overflow-y-auto [scrollbar-width:thin];
  }
  .showschecks li {
    @apply flex items-center gap-2 py-[5px] text-[11.5px] uppercase tracking-[0.04em] text-black cursor-pointer select-none hover:bg-[#f6f6f6];
  }
  .showschecks li.letter-head {
    @apply p-[8px_0_3px] text-[10px] tracking-[0.22em] text-[#8a8a8a] cursor-default pointer-events-none border-t border-dotted border-[#e6e6e6] first:border-t-0 first:pt-1;
  }
  .showschecks input[type="checkbox"] {
    @apply appearance-none w-3 h-3 border-[1.5px] border-black bg-white cursor-pointer shrink-0 rounded-none inline-grid place-content-center checked:bg-black;
  }
  .showschecks input[type="checkbox"]:checked::after {
    content: "";
    @apply w-[6px] h-[6px] bg-white;
  }
  .showschecks .ct {
    @apply text-[#999] text-[10px] ml-auto;
  }

  .showschecks--flat li {
    @apply py-[4px];
  }
  .showschecks--flat li label {
    @apply inline-flex items-center gap-2 cursor-pointer w-full;
  }

  .showsmore {
    @apply inline-block mt-[10px] text-[10.5px] uppercase tracking-[0.16em] text-[#555] cursor-pointer hover:text-black;
  }
  .showsclear {
    @apply mt-[18px] w-full border-[1.5px] border-black bg-white text-black p-[11px_12px] text-[11px] uppercase tracking-[0.22em] font-bold cursor-pointer rounded-none transition-all duration-150 hover:bg-black hover:text-white;
  }

  .showsmain {
    @apply flex-1 min-w-0;
  }
  .showsgrid {
    @apply grid grid-cols-2 gap-[22px] relative max-[560px]:grid-cols-1;
  }
  .showsgrid.is-loading::before {
    content: "";
    @apply absolute -top-1 left-0 h-[2px] w-[38%] bg-black z-10;
    animation: hbxProg 1s ease-in-out infinite;
  }

  .showscard {
    @apply relative flex gap-[14px] no-underline text-inherit bg-white p-3 transition-colors duration-200 hover:border-black max-[700px]:flex-col max-[700px]:gap-[10px];
  }
  .showscard:hover .showscard-img img {
    @apply scale-104;
  }

  .showscard-left {
    @apply flex-none w-[30%] min-w-[110px] max-[700px]:w-full max-[700px]:flex-none;
  }
  .showscard-img {
    @apply relative w-full aspect-[3/4] bg-[#f1f1f1] overflow-hidden rounded-none;
  }
  .showscard-img img {
    @apply w-full h-full object-cover transition-transform duration-600 opacity-0;
  }
  .showscard-img img.is-loaded {
    @apply opacity-100;
  }

  .showsspin {
    @apply absolute inset-0 flex items-center justify-center text-[#bdbdbd] opacity-100 transition-opacity duration-300 pointer-events-none z-10;
  }
  .showscard-img.is-loaded .showsspin,
  .showscard-thumb.is-loaded .showsspin {
    @apply opacity-0;
  }

  .showsbadge {
    @apply absolute top-[6px] right-[6px] text-[9px] tracking-[0.14em] uppercase font-bold text-white bg-black p-[3px_6px];
  }
  .showsflag-featured {
    @apply absolute top-[6px] left-[6px] text-[9px] tracking-[0.14em] uppercase font-bold text-black bg-white p-[3px_6px] border border-black;
  }

  .showscard-right {
    @apply flex-1 min-w-0 flex flex-col justify-between max-[700px]:w-full;
  }
  .showscard-info {
    @apply flex-none min-w-0 flex flex-col p-[2px_2px_0];
  }
  .showscard-title {
    @apply text-[15.5px] font-bold leading-[1.32] my-0 mb-[10px] text-[#111] tracking-[-0.01em] line-clamp-2 h-[41px] overflow-hidden;
  }
  .showscard-meta {
    @apply text-[9.5px] text-[#888] my-0 mb-[14px] leading-[1.55] tracking-[0.04em] uppercase line-clamp-2 h-[29px] overflow-hidden;
  }
  .showscard-meta-foot {
    @apply flex flex-col gap-[6px] h-[38px] overflow-hidden;
  }
  .showscard-meta-line {
    @apply inline-flex items-center gap-[6px] text-[10.5px] tracking-[0.06em] uppercase text-[#444] h-[16px] leading-[16px] overflow-hidden whitespace-nowrap;
  }

  .showscard-strip {
    @apply grid grid-cols-5 gap-1 mt-[10px];
  }
  .showscard-thumb {
    @apply relative aspect-[3/4] bg-[#f1f1f1] overflow-hidden;
  }
  .showscard-thumb img {
    @apply w-full h-full object-cover opacity-0 transition-opacity duration-450 ease-in-out;
  }
  .showscard-thumb img.is-loaded {
    @apply opacity-100;
  }
  .showscard-thumb.placeholder {
    @apply bg-[#f6f6f6];
  }
  .showscard-thumb-more {
    @apply absolute inset-0 bg-black/55 text-white text-[11px] font-bold tracking-[0.04em] flex items-center justify-center;
  }

  .showscard--skel .showscard-img,
  .showscard--skel .showscard-thumb,
  .showscard--skel .showsline {
    @apply bg-[#efefef];
    animation: hbxShim 1.6s ease infinite;
  }

  .showsloadmore-wrap {
    @apply flex justify-center mt-[38px];
  }
  .showsloadmore {
    @apply border-[1.5px] border-black bg-white text-black p-[13px_36px] text-[11px] uppercase tracking-[0.22em] font-bold cursor-pointer rounded-none transition-all duration-200 hover:bg-black hover:text-white disabled:opacity-40 disabled:cursor-default;
  }

  .showsempty {
    @apply col-span-full p-[80px_20px] text-center text-xs tracking-[0.22em] uppercase text-[#999] border border-dashed border-[#ccc];
  }

  @keyframes hbxProg { 0% { left: -38%; } 100% { left: 100%; } }
  @keyframes hbxShim { 0%, 100% { opacity: .85; } 50% { opacity: .55; } }
</style>

<script>
  import Alpine from "alpinejs"
  import { getArticles, toAbs, type ArticleItem, type BrandEntry } from "../lib/api"

  const ICON_USER = `<svg viewBox="0 0 12 12" width="9" height="9" aria-hidden="true"><circle cx="6" cy="4" r="2" stroke="currentColor" fill="none" stroke-width="1"/><path d="M2 10c0-2 1.8-3 4-3s4 1 4 3" stroke="currentColor" fill="none" stroke-width="1" stroke-linecap="round"/></svg>`
  const ICON_DATE = `<svg viewBox="0 0 12 12" width="9" height="9" aria-hidden="true"><rect x="2" y="3" width="8" height="7" stroke="currentColor" fill="none" stroke-width="1"/><path d="M2 6h8M4 2v2M8 2v2" stroke="currentColor" fill="none" stroke-width="1" stroke-linecap="round"/></svg>`
  const SPIN_SVG = `<svg viewBox="0 0 24 24" aria-hidden="true" class="w-[22px] h-[22px] block"><g class="ring origin-[12px_12px] animate-spin" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-dasharray="40 22"><circle cx="12" cy="12" r="9"></circle></g><g opacity="0.55" fill="none" stroke="currentColor" stroke-width="1"><rect x="8" y="9.6" width="8" height="5.4"></rect><circle cx="12" cy="12.3" r="1.6"></circle></g></svg>`

  document.addEventListener("alpine:init", () => {
    Alpine.data("showsPage", () => {
      const node = document.getElementById("showsbrands-data")
      const allBrands: BrandEntry[] = node?.textContent ? JSON.parse(node.textContent) : []

      return {
        allBrands,
        ICON_USER,
        ICON_DATE,
        SPIN_SVG,
        asideCollapsed: localStorage.getItem("showsaside-collapsed") === "1",
        collapsedGroups: {
          designers: localStorage.getItem("showsg-designers") === "1",
          collection: localStorage.getItem("showsg-collection") === "1",
          season: localStorage.getItem("showsg-season") === "1",
          year: localStorage.getItem("showsg-year") === "1",
        },
        selectedBrands: [] as number[],
        selectedCt: [] as string[],
        selectedSeason: [] as string[],
        selectedYear: [] as string[],
        keyword: "",
        brandsExpanded: false,

        items: [] as (ArticleItem & { _imgLoaded?: boolean })[],
        loading: false,
        loadingMore: false,
        page: 1,
        size: 24,
        total: 0,
        isEnd: false,
        reqToken: 0,

        init() {
          this.loadPage(1, false)
        },

        // 计算属性：侧边栏设计师列表的分组渲染
        get visibleBrandItems() {
          const kw = this.keyword.trim().toLowerCase()
          const result: any[] = []

          if (kw) {
            this.allBrands.forEach((b) => {
              if (b.name.toLowerCase().includes(kw)) {
                result.push({ type: "brand", id: b.id, name: b.name, count: b.article_count, key: b.id })
              }
            })
          } else {
            const map = new Map<string, BrandEntry[]>()
            for (const b of this.allBrands) {
              const letter = (b.name[0] || "?").toUpperCase()
              if (!map.has(letter)) map.set(letter, [])
              map.get(letter)!.push(b)
            }
            const grouped = [...map.entries()].sort((a, b) => a[0].localeCompare(b[0]))

            let shown = 0
            const MAX_INITIAL = 60
            for (const [letter, list] of grouped) {
              if (!this.brandsExpanded && shown >= MAX_INITIAL) break
              result.push({ type: "letter", letter, key: `letter-${letter}` })
              for (const b of list) {
                if (!this.brandsExpanded && shown >= MAX_INITIAL) break
                result.push({ type: "brand", id: b.id, name: b.name, count: b.article_count, key: b.id })
                shown++
              }
            }
          }
          return result
        },

        get hasMoreBrands() {
          return this.allBrands.length > 60
        },

        // 面包屑末级：未选年份时显示默认的「2026 Edition」，选中后显示对应年份
        get crumbYear() {
          if (this.selectedYear.length) {
            const ys = [...this.selectedYear].sort()
            return ys.length === 1 ? `${ys[0]} Edition` : `${ys.join(" / ")}`
          }
          return "2026 Edition"
        },

        // 骨架屏数量与首屏 data 数量一致，保证「加载中」与「数据完成」两阶段的网格高度相同，消除抖动
        get skeletonCount() {
          return this.size
        },

        // 已筛选选项 Pills 视图数据
        get pills() {
          const list: { label: string; clear: () => void }[] = []
          if (this.selectedBrands.length) {
            const labels = this.selectedBrands
              .map((id) => this.allBrands.find((b) => b.id === id)?.name ?? `#${id}`)
              .slice(0, 4)
            const more = this.selectedBrands.length > 4 ? ` +${this.selectedBrands.length - 4}` : ""
            list.push({
              label: "DESIGNER · " + labels.join(", ") + more,
              clear: () => { this.selectedBrands = []; this.refreshFilter(); }
            })
          }
          if (this.selectedCt.length) {
            list.push({
              label: "COLLECTION · " + this.selectedCt.join("+").toUpperCase(),
              clear: () => { this.selectedCt = []; this.refreshFilter(); }
            })
          }
          if (this.selectedSeason.length) {
            list.push({
              label: "SEASON · " + this.selectedSeason.join("+").toUpperCase(),
              clear: () => { this.selectedSeason = []; this.refreshFilter(); }
            })
          }
          if (this.selectedYear.length) {
            list.push({
              label: "YEAR · " + [...this.selectedYear].sort().join("+"),
              clear: () => { this.selectedYear = []; this.refreshFilter(); }
            })
          }
          return list
        },

        get loadBtnText() {
          if (this.loadingMore) return "Loading…"
          if (this.isEnd) return "— End of Archive —"
          return "Load More ↓"
        },

        // 事件处理方法
        toggleAside() {
          this.asideCollapsed = !this.asideCollapsed
          localStorage.setItem("showsaside-collapsed", this.asideCollapsed ? "1" : "")
          document.documentElement.classList.toggle("showsaside-collapsed", this.asideCollapsed)
        },

        toggleGroup(group: "designers" | "collection" | "season" | "year") {
          this.collapsedGroups[group] = !this.collapsedGroups[group]
          localStorage.setItem(`showsg-${group}`, this.collapsedGroups[group] ? "1" : "")
        },

        toggleBrand(id: number) {
          const idx = this.selectedBrands.indexOf(id)
          if (idx >= 0) this.selectedBrands.splice(idx, 1)
          else this.selectedBrands.push(id)
          this.refreshFilter()
        },

        refreshFilter() {
          this.loadPage(1, false)
        },

        clearAll() {
          this.selectedBrands = []
          this.selectedCt = []
          this.selectedSeason = []
          this.selectedYear = []
          this.keyword = ""
          this.refreshFilter()
        },

        // API 加载
        async loadPage(page: number, append = false) {
          const myToken = ++this.reqToken
          if (append) {
            this.loadingMore = true
          } else {
            this.loading = true
            this.items = []
          }

          try {
            const json = await getArticles({
              page,
              size: this.size,
              sort: "newest",
              brand_ids: this.selectedBrands,
              collection_type: this.selectedCt,
              season: this.selectedSeason,
              year: this.selectedYear,
              with_images: 6,
            })

            if (myToken !== this.reqToken) return

            const rows = json.data.map((item: ArticleItem) => ({ ...item, _imgLoaded: false }))
            this.total = json.total
            this.page = page
            this.items = append ? [...this.items, ...rows] : rows

            this.isEnd = page >= json.last_page || rows.length < this.size
          } catch {
            if (myToken !== this.reqToken) return
            if (!append) this.items = []
          } finally {
            if (myToken === this.reqToken) {
              this.loading = false
              this.loadingMore = false
            }
          }
        },

        // 辅助辅助工具函数
        toAbsUrl(url: string) { return toAbs(url) },
        isNewAdded(pubAt?: number) { return Date.now() / 1000 - Number(pubAt || 0) < 60 * 60 * 24 * 14 },
        fmtDate(ts: number) {
          if (!ts) return ""
          const d = new Date(ts * 1000)
          return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, "0")}-${String(d.getDate()).padStart(2, "0")}`
        },
        ctLabel(ct?: string) {
          const map: Record<string, string> = { rtw: "Ready-to-Wear", menswear: "Menswear", couture: "Couture", resort: "Resort", pre_fall: "Pre-Fall" }
          return ct && map[ct] ? map[ct] : (ct || "")
        },
        getCardSlots(it: ArticleItem) {
          const gallery = it.gallery || []
          const totalCount = it.image_count || 0
          const moreLabel = totalCount > 30 ? "30+" : `${totalCount || 0}+`
          const slots = []
          for (let i = 0; i < 5; i++) {
            const src = gallery[i]
            const isLast = i === 4
            slots.push({ src, loaded: false, isLast, moreLabel: (isLast && totalCount > 0) ? moreLabel : "" })
          }
          return slots
        }
      }
    })
  })
</script>