---
import type { RawStreetSnap } from "@/lib/api"
import GalleryLightbox from "@/components/GalleryLightbox.astro"
import { getI18n } from "@/lib/i18n"
import { href, ROUTES } from '@/lib/routes'
import { ssrAbs } from "@/lib/request"

interface Props {
  snap: RawStreetSnap | null
  error?: "missing" | "failed" | null
  preview?: boolean // 后端未登录截断图片集时返回 true，详情页据此弹「登录查看全部图片」门禁
  imageTotal?: number // 图片集真实总数（后端截断前），渲染「剩余 N 张」占位遮罩
}

const { snap, error = null, preview = false, imageTotal = 0 } = Astro.props
const { locale, t } = getI18n(Astro)

const images = (snap?.images ?? [])
  .map((im) => ({
    id: im.id,
    url: ssrAbs(im.image || ""),
    // 缩略图：灯箱左栏缩略图条只显示 76~118px，用后端给的 thumb 即可；未返回时回落展示图。
    thumb: ssrAbs(im.thumb || im.image || ""),
    raw: im.image || "", // 相对路径：收藏快照存相对地址，不把宿主/端口写死进库
    name: im.name || "",
  }))
  .filter((im) => im.url)

// 未登录预览上限：详情页（图集）未登录最多展示前 PREVIEW_LIMIT 张图片；其余由登录门禁提示，
// 已登录（客户端 loadAuthedState 拉全量）或图片本就不超上限时全部展示。前 PREVIEW_LIMIT 张服务端已渲染（SEO/无 JS 友好）。
const PREVIEW_LIMIT = 5
const previewImages = images.slice(0, PREVIEW_LIMIT)

// 未登录预览占位遮罩数：补足「剩余 N 张」空图，提示登录后可见，避免误以为图集只有预览上限那几张。
// 已登录（preview=false）或图片本就不超上限时 lockedCount=0，不渲染占位。
const lockedCount = preview ? Math.max(0, (imageTotal || 0) - previewImages.length) : 0

const homeHref = href(locale, ROUTES.home)

// theimpression 标题含字面 \t：地点 \t 场次，列表/详情统一以 " · " 呈现
const displayTitle = (snap?.title || "").replace(/\t/g, " · ")
---

<div
  id="street-snap-view"
  x-data="streetSnapView()"
  data-fav-type="snap_image"
  data-gallery-uid={snap?.id ?? ""}
  data-gallery-title={displayTitle}
  data-gallery-brand=""
  data-preview={preview ? "true" : "false"}
  class="min-h-screen bg-white text-black font-sans selection:bg-black selection:text-white"
>
  {
    snap ? (
      <article class="mx-auto max-w-[1600px] px-5 md:px-10 py-12 md:py-16">
        <h1 class="font-black leading-[0.95] tracking-tight text-[10vw] md:text-[4.5rem] mt-8">
          {displayTitle}
        </h1>

        {previewImages.length > 0 && (
          <section class="mt-16">
            <div
              id="snap-gallery"
              class="grid grid-cols-2 md:grid-cols-3 gap-4"
            >
              {previewImages.map((im, i) => (
                <figure
                  data-image-index={i}
                  data-image-url={im.url}
                  data-image-name={im.name}
                  data-fav-id={im.id}
                  data-fav-url={im.raw}
                  @click={`openLb(${i})`}
                  class="relative bg-[var(--c-gray-100)] cursor-zoom-in group"
                >
                  <img
                    src={im.url}
                    alt={im.name}
                    loading={i < 6 ? "eager" : "lazy"}
                    decoding="async"
                    class="w-full aspect-[3/4] object-cover group-hover:opacity-90 transition-opacity"
                  />

                  {/* 单图收藏：hover 显示，已收藏常驻实心 */}
                  <button
                    login-required
                    type="button"
                    data-fav-id={im.id}
                    data-fav-url={im.raw}
                    @click.stop="toggleFav($el.dataset.favId, $el.dataset.favUrl)"
                    :class="isFav($el.dataset.favId) ? 'is-fav opacity-100' : 'opacity-0 group-hover:opacity-100'"
                    class="fav-btn absolute right-2 top-2 z-10 w-8 h-8 rounded-full border border-black/15 bg-white/80 text-[#111] flex items-center justify-center backdrop-blur-md hover:bg-black/5 hover:border-black/30 transition-all cursor-pointer"
                    aria-label={t('save')}
                  >
                    <svg class="w-4 h-4" viewBox="0 0 24 24" stroke="currentColor" stroke-width="1.6" stroke-linecap="round" stroke-linejoin="round">
                      <path d="M12 21C12 21 4 14.5 4 8.8C4 6.1 6.1 4 8.7 4C10.3 4 11.5 4.8 12 6C12.5 4.8 13.7 4 15.3 4C17.9 4 20 6.1 20 8.8C20 14.5 12 21 12 21Z"/>
                    </svg>
                  </button>

                  {im.name && (
                    <figcaption class="text-[11px] uppercase tracking-widest text-[var(--c-gray-600)] mt-2">
                      {im.name}
                    </figcaption>
                  )}
                </figure>
              )              )}

              {/* 未登录预览占位遮罩：补满「剩余 N 张」空图，提示用户登录后可见，
                  避免误以为图集只有预览上限那几张。已登录（x-show false）自动隐藏，由 extraImages 真实图替补。 */}
              {lockedCount > 0 &&
                Array.from({ length: lockedCount }).map(() => (
                  <figure
                    x-show="!isAuthed && preview"
                    x-cloak
                    login-redirect
                    class="relative bg-[var(--c-gray-100)] cursor-pointer group overflow-hidden"
                  >
                    {/* 与真实图片等高的 3:4 图位：锁图标 + 提示，点击跳登录 */}
                    <div class="w-full aspect-[3/4] flex items-center justify-center text-[var(--c-gray-600)] group-hover:text-[var(--c-gray-700)] transition-colors pointer-events-none">
                      <div class="flex flex-col items-center gap-2">
                        <svg class="w-7 h-7" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.4" stroke-linecap="round" stroke-linejoin="round">
                          <rect x="4.5" y="10.5" width="15" height="10" rx="2" />
                          <path d="M8 10.5V7a4 4 0 0 1 8 0v3.5" />
                        </svg>
                        <span class="text-[10px] uppercase tracking-[0.18em]">{t('login to view')}</span>
                      </div>
                    </div>
                    {/* 与真实图 figcaption 同高的 caption 行（正常图显示 img01 等小字）：
                        占位显示 +N photos，保证遮罩格子与真实图片格子总高一致 */}
                    <figcaption class="text-[11px] uppercase tracking-widest text-[var(--c-gray-600)] mt-2">+{lockedCount} {t('photos')}</figcaption>
                  </figure>
                ))
              }

              {/* 登录后追加的额外图片：extraImages 由客户端 loadAuthedState() 在已登录时填充，未登录为空不渲染 */}
              <template x-for="(im, i) in extraImages" :key="im.url" >
                <figure
                  :data-image-index="5 + i"
                  :data-image-url="im.url"
                  :data-image-name="im.name"
                  :data-fav-id="im.id"
                  :data-fav-url="im.raw"
                  @click="openLb(5 + i)"
                  class="relative bg-[var(--c-gray-100)] cursor-zoom-in group"
                >
                  <img
                    :src="im.url"
                    :alt="im.name"
                    loading="lazy"
                    decoding="async"
                    class="w-full aspect-[3/4] object-cover group-hover:opacity-90 transition-opacity"
                  />
                  <button
                    login-required
                    type="button"
                    :data-fav-id="im.id"
                    :data-fav-url="im.raw"
                    @click.stop="toggleFav($el.dataset.favId, $el.dataset.favUrl)"
                    :class="isFav($el.dataset.favId) ? 'is-fav opacity-100' : 'opacity-0 group-hover:opacity-100'"
                    class="fav-btn absolute right-2 top-2 z-10 w-8 h-8 rounded-full border border-black/15 bg-white/80 text-[#111] flex items-center justify-center backdrop-blur-md hover:bg-black/5 hover:border-black/30 transition-all cursor-pointer"
                    aria-label={t('save')}
                  >
                    <svg class="w-4 h-4" viewBox="0 0 24 24" stroke="currentColor" stroke-width="1.6" stroke-linecap="round" stroke-linejoin="round">
                      <path d="M12 21C12 21 4 14.5 4 8.8C4 6.1 6.1 4 8.7 4C10.3 4 11.5 4.8 12 6C12.5 4.8 13.7 4 15.3 4C17.9 4 20 6.1 20 8.8C20 14.5 12 21 12 21Z"/>
                    </svg>
                  </button>
                  <template x-if="im.name">
                    <figcaption class="text-[11px] uppercase tracking-widest text-[var(--c-gray-600)] mt-2" x-text="im.name"></figcaption>
                  </template>
                </figure>
              </template>
            </div>
          </section>
        )}

      </article>
    ) : (
      <div class="flex flex-col items-center justify-center min-h-[60vh] px-5 text-center">
        <p class="text-sm text-[var(--c-gray-700)] uppercase tracking-widest mb-4">
          {error === "missing" ? t('No street snap ID specified') : t('Failed to load street snap. Please refresh or try later.')}
        </p>


        <a
          href={homeHref}
          class="text-[12px] uppercase tracking-[0.2em] border border-black px-4 py-2 hover:bg-black hover:text-white transition-colors"
        >
          ← {t('Back to Index')}
        </a>
      </div>
    )
  }

  {/* 大图灯箱：与走秀详情共用 components/GalleryLightbox.astro（标记）+ lib/gallery.ts（交互）。
      街拍无细节图分组，故不传 details 插槽。 */}
  {snap && previewImages.length > 0 && (
    <GalleryLightbox images={previewImages} aspect="3/4" />
  )}
</div>

<script>
  import { getStreetSnapDetailAuthed } from "@/lib/api"
  import { createGalleryView } from "@/lib/gallery"

  // 图集 + 大图灯箱的共享逻辑全在 lib/gallery.ts；街拍详情没有额外扩展，只补一个 init 调共享初始化。
  // 回调显式标注返回类型：对象展开会让 Alpine.data 的泛型 T 退化成 {}，this.xxx 全部报错（见 RunwayLookCard.astro 说明）。
  document.addEventListener("alpine:init", () => {
    Alpine.data(
      "streetSnapView",
      (): ReturnType<typeof createGalleryView> & { init(): void } => ({
        ...createGalleryView({
          rootSelector: "#street-snap-view",
          gallerySelector: "#snap-gallery",
          favType: "snap_image",
          fetchDetail: getStreetSnapDetailAuthed,
        }),

        init() {
          this.galleryInit()
        },
      }),
    )
  })
</script>