import type { Metadata } from "next";
import Link from "next/link";
import { notFound } from "next/navigation";
import { cookies } from "next/headers";
import {
  Clock,
  Heart,
  MessageCircle,
  Flame,
  Layers,
  User,
  PenLine,
  ArrowRight,
  ChevronRight,
} from "lucide-react";
import {
  fetchPostDetail,
  fetchComments,
  fetchPosts,
  fetchUserProfile,
  postDeleteTypeLabel,
  type UserProfile,
  type PostListItem,
  type Board,
  type CommentsResponse,
} from "@/lib/api";
import { postViewerCookieHeader } from "@/lib/cookies";
import { getMeCached, getPublicSettingsCached } from "@/lib/serverData";
import CommentSection from "@/components/CommentSection";
import PostActions from "@/components/PostActions";
import LikeButton from "@/components/LikeButton";
import PostToc from "@/components/PostToc";
import { SiteDocBreadcrumb } from "@/components/site-doc";
import MobilePostBar from "@/components/MobilePostBar";
import Avatar from "@/components/Avatar";
import RoleBadge from "@/components/RoleBadge";
import MarkdownBody from "@/components/MarkdownBody";
import { publicMarkdownForSeo } from "@/lib/hideBlocks";
import PostAttachments from "@/components/PostAttachments";
import PostInteractPanels, { QuestionStatusCard } from "@/components/PostInteractPanels";
import AcceptedAnswerCard from "@/components/AcceptedAnswerCard";
import { canModerateBoard } from "@/lib/roles";
import { IconComment, IconEye } from "@/components/Icons";
import { normalizePostType, postTypeLabel, contentAccessLabel, typeStatusLabel, typeStatusClass } from "@/lib/postMeta";
import { extractToc, estimateReadingMinutes, markdownHeadingToc } from "@/lib/toc";

interface PageProps {
  params: Promise<{ id: string }>;
  // page 同时用于评论分页（?page=N），帖子正文本身不分页
  searchParams: Promise<{ page?: string }>;
}

export async function generateMetadata({ params }: PageProps): Promise<Metadata> {
  const { id } = await params;
  try {
    // 带登录态：作者/管理团队看待审帖时标签标题也应是真实标题而非"帖子不存在"
    const { post } = await fetchPostDetail(id, postViewerCookieHeader(await cookies()));
    if (post.tombstone) {
      return {
        title: post.title || "帖子已删除",
        description: "该帖子已被删除",
        robots: { index: false, follow: false },
      };
    }
    const publicBody = publicMarkdownForSeo(post.content || "");
    const desc = publicBody
      ? publicBody.slice(0, 160)
      : post.access_hint || "部分内容需满足条件后可见";
    return {
      title: post.title,
      description: desc,
      openGraph: {
        title: post.title,
        description: desc,
        type: "article",
      },
    };
  } catch {
    return { title: "帖子不存在" };
  }
}

function formatYMD(dateStr: string) {
  const d = new Date(dateStr);
  return `${d.getFullYear()}.${String(d.getMonth() + 1).padStart(2, "0")}.${String(
    d.getDate()
  ).padStart(2, "0")}`;
}

function formatDateTime(dateStr: string) {
  return new Date(dateStr).toLocaleString("zh-CN", {
    year: "numeric",
    month: "2-digit",
    day: "2-digit",
    hour: "2-digit",
    minute: "2-digit",
  });
}

/* ============================================================
   左栏模块（仅 xl 三栏时展示）
   ============================================================ */

function BoardCard({ board }: { board: Board }) {
  const colorIdx = Math.max(0, board.color_index ?? 0) % 8;
  return (
    <section className="j13-module shrink-0" aria-labelledby="board-card-title">
      <p className="j13-module-title mb-3" id="board-card-title">
        <Layers size={15} style={{ color: "var(--accent)" }} /> 所属板块
      </p>
      <Link href={`/?board=${board.id}`} className="flex items-center gap-3 group">
        <span
          className={`av-${colorIdx} w-11 h-11 rounded-xl flex items-center justify-center text-lg font-extrabold shrink-0`}
        >
          {board.name.slice(0, 1)}
        </span>
        <span
          className="font-semibold text-[14.5px] truncate group-hover:text-[var(--accent)] transition-colors"
          style={{ color: "var(--ink)" }}
        >
          {board.name}
        </span>
      </Link>
      {board.description && (
        <p className="mt-2.5 text-[12.5px] leading-relaxed" style={{ color: "var(--ink-3)" }}>
          {board.description}
        </p>
      )}
      <Link
        href={`/?board=${board.id}`}
        className="btn btn-line btn-sm w-full justify-center mt-3.5"
      >
        查看该板讨论 <ArrowRight size={13} />
      </Link>
    </section>
  );
}

function AuthorRailCard({
  profile,
  allowComments,
}: {
  profile: UserProfile;
  allowComments: boolean;
}) {
  const u = profile.user;
  const signature = (u.signature || "").trim();
  const { post_count, comment_count, points, streak } = profile.stats;
  const stats = [
    { label: "发帖", value: post_count },
    ...(allowComments ? [{ label: "评论", value: comment_count }] : []),
    { label: "积分", value: points },
  ];
  return (
    <section className="j13-module shrink-0" aria-labelledby="author-card-title">
      <p className="j13-module-title mb-3" id="author-card-title">
        <User size={15} style={{ color: "var(--accent)" }} /> 作者
      </p>
      <div className="flex items-center gap-3">
        <Link href={`/u/${u.id}`} className="shrink-0" aria-label={u.nickname}>
          <Avatar name={u.nickname || u.username} src={u.avatar || undefined} size={48} />
        </Link>
        <div className="min-w-0">
          <Link
            href={`/u/${u.id}`}
            className="block font-semibold text-[14.5px] truncate hover:text-[var(--accent)] transition-colors"
            style={{ color: "var(--ink)" }}
          >
            {u.nickname}
          </Link>
          <p className="meta mt-0.5 truncate">@{u.username}</p>
          {u.role !== "user" && (
            <div className="mt-1">
              <RoleBadge role={u.role} boardIds={u.board_ids} />
            </div>
          )}
        </div>
      </div>
      {/* 有签名则展示；无则留空，不放占位文案 */}
      {signature ? (
        <p
          className="mt-3 text-[12.5px] leading-relaxed line-clamp-3"
          style={{ color: "var(--ink-2)" }}
          title={signature}
        >
          {signature}
        </p>
      ) : null}
      <div
        className={`mt-3 grid border-t ${stats.length === 3 ? "grid-cols-3" : "grid-cols-2"}`}
        style={{ borderColor: "var(--line)" }}
      >
        {stats.map((s, i) => (
          <div
            key={s.label}
            className="px-1.5 py-2.5 text-center"
            style={i > 0 ? { borderLeft: "1px solid var(--line)" } : undefined}
          >
            <p
              className="text-[17px] font-semibold leading-none tabular-nums"
              style={{ color: "var(--ink)" }}
            >
              {s.value}
            </p>
            <p className="mt-1.5 text-[11px]" style={{ color: "var(--ink-3)" }}>
              {s.label}
            </p>
          </div>
        ))}
      </div>
      {streak > 0 && (
        <p
          className="mt-2 flex items-center justify-center gap-1 text-[11.5px] font-medium"
          style={{ color: "var(--gold)" }}
        >
          <Flame size={11.5} /> 连签 {streak} 天
        </p>
      )}
      <Link href={`/u/${u.id}`} className="btn btn-line btn-sm w-full justify-center mt-3">
        访问主页
      </Link>
    </section>
  );
}

function AuthorPosts({ posts }: { posts: PostListItem[] }) {
  if (posts.length === 0) return null;
  return (
    <section className="j13-module flex min-h-0 flex-col" aria-labelledby="author-posts-title">
      <p className="j13-module-title mb-1 shrink-0" id="author-posts-title">
        <PenLine size={15} style={{ color: "var(--accent)" }} /> TA 的其他帖子
      </p>
      <ul className="j13-rail-scroll">
        {posts.map((p) => (
          <li key={p.id}>
            <Link
              href={`/post/${p.id}`}
              data-tip={p.title}
              className="block rounded-[10px] px-2 py-2 transition-colors hover:bg-[var(--accent-soft)] focus-visible:bg-[var(--accent-soft)]"
            >
              <span
                className="block text-[13px] leading-snug line-clamp-2"
                style={{ color: "var(--ink)" }}
              >
                {p.title}
              </span>
              <span className="meta mt-1 block text-[11px]">{formatYMD(p.created_at)}</span>
            </Link>
          </li>
        ))}
      </ul>
    </section>
  );
}

/* ============================================================
   右栏模块（lg 起展示；移动端下沉到评论之后）
   ============================================================ */

function RelatedPosts({
  posts,
  boardId,
  uid = "related",
  allowComments,
}: {
  posts: PostListItem[];
  boardId: number;
  // 右栏与移动端内联实例同时存在，id 必须区分以免 aria-labelledby 指向隐藏副本
  uid?: string;
  allowComments: boolean;
}) {
  if (posts.length === 0) return null;
  const titleId = `${uid}-title`;
  return (
    <section className="j13-module shrink-0" aria-labelledby={titleId}>
      <p className="j13-module-title mb-1.5" id={titleId}>
        <Flame size={15} style={{ color: "var(--clay)" }} /> 同板块热议
      </p>
      <ol>
        {posts.map((p, i) => (
          <li key={p.id}>
            <Link href={`/post/${p.id}`} className="j13-rank" data-tip={p.title}>
              <span className="j13-rank-no">{i + 1}</span>
              <span className="min-w-0 flex-1">
                <span className="j13-rank-title line-clamp-2">
                  {p.title}
                </span>
                <span className="mt-1 flex items-center gap-2.5 meta text-[11.5px]">
                  {allowComments ? (
                    <span className="inline-flex items-center gap-1">
                      <MessageCircle size={11.5} /> {p.comment_count}
                    </span>
                  ) : null}
                  <span className="inline-flex items-center gap-1">
                    <Heart size={11.5} /> {p.like_count}
                  </span>
                </span>
              </span>
            </Link>
          </li>
        ))}
      </ol>
      <Link
        href={`/?board=${boardId}`}
        className="j13-raillink justify-center mt-1.5 text-[12.5px]"
        style={{ color: "var(--accent)" }}
      >
        查看全部 <ChevronRight size={13} />
      </Link>
    </section>
  );
}

/* 移动端 / 窄屏作者卡（xl 以下内联在正文与评论之间，替代左栏作者模块） */
function AuthorCardStacked({
  profile,
  allowComments,
}: {
  profile: UserProfile;
  allowComments: boolean;
}) {
  const u = profile.user;
  const signature = (u.signature || "").trim();
  const { post_count, comment_count, points, streak } = profile.stats;
  return (
    <div className="panel p-5 sm:p-6">
      <p
        className="text-[11.5px] font-medium tracking-[0.08em] uppercase mb-3.5"
        style={{ color: "var(--ink-3)" }}
      >
        关于作者
      </p>
      <div className="flex items-start gap-4 flex-wrap">
        <Link href={`/u/${u.id}`} className="shrink-0" aria-label={u.nickname}>
          <Avatar name={u.nickname || u.username} src={u.avatar || undefined} size={52} />
        </Link>
        <div className="min-w-0 flex-1">
          <div className="flex items-center gap-2 flex-wrap">
            <Link
              href={`/u/${u.id}`}
              className="font-semibold text-[15px] hover:text-[var(--accent)] transition-colors"
              style={{ color: "var(--ink)" }}
            >
              {u.nickname}
            </Link>
            {u.role !== "user" && <RoleBadge role={u.role} boardIds={u.board_ids} />}
          </div>
          <p className="meta mt-1 flex items-center gap-1.5 flex-wrap">
            <span>@{u.username}</span>
            <span aria-hidden>·</span>
            <span>发帖 {post_count}</span>
            {allowComments ? (
              <>
                <span aria-hidden>·</span>
                <span>评论 {comment_count}</span>
              </>
            ) : null}
            <span aria-hidden>·</span>
            <span>积分 {points}</span>
            {streak > 0 && (
              <>
                <span aria-hidden>·</span>
                <span className="inline-flex items-center gap-0.5 font-medium" style={{ color: "var(--gold)" }}>
                  <Flame size={11} /> 连签 {streak} 天
                </span>
              </>
            )}
          </p>
          {signature ? (
            <p className="mt-2 text-[13px] leading-relaxed line-clamp-2" style={{ color: "var(--ink-2)" }}>
              {signature}
            </p>
          ) : null}
        </div>
        <Link href={`/u/${u.id}`} className="btn btn-line btn-sm shrink-0 self-center">
          访问主页
        </Link>
      </div>
    </div>
  );
}

export default async function PostDetailPage({ params, searchParams }: PageProps) {
  const { id } = await params;
  const sp = await searchParams;
  const commentPage = Math.max(1, parseInt(sp.page || "1", 10) || 1);
  const cookie = postViewerCookieHeader(await cookies());
  // 待审/被拒帖子对无权访问者由后端返回 404，这里落到全局 not-found 页而非 500
  let post: Awaited<ReturnType<typeof fetchPostDetail>>["post"];
  try {
    ({ post } = await fetchPostDetail(id, cookie));
  } catch {
    notFound();
  }

  // 软删专用页：列表已不可见，原链接展示删除说明
  if (post.tombstone) {
    const typeLabel = postDeleteTypeLabel(post.delete_type);
    return (
      <div className="max-w-lg mx-auto py-16 px-4 text-center">
        <p
          className="inline-flex items-center rounded-full px-3 py-1 text-[12px] font-semibold mb-4"
          style={{ background: "var(--danger-soft)", color: "var(--danger)" }}
        >
          帖子已删除
        </p>
        <h1 className="text-[20px] sm:text-[22px] font-extrabold mb-3" style={{ color: "var(--ink)" }}>
          {post.title || "（无标题）"}
        </h1>
        {post.staff_deleted ? (
          <div
            className="panel text-left p-5 sm:p-6 mt-2"
            style={{ borderColor: "var(--danger-soft)" }}
          >
            <p className="text-[14px] font-medium mb-3" style={{ color: "var(--ink)" }}>
              此帖已被管理员删除
            </p>
            {typeLabel && (
              <p className="text-[13px] mb-2" style={{ color: "var(--ink-2)" }}>
                <span style={{ color: "var(--ink-3)" }}>类型：</span>
                {typeLabel}
              </p>
            )}
            {post.delete_reason && (
              <p className="text-[13px] leading-relaxed" style={{ color: "var(--ink-2)" }}>
                <span style={{ color: "var(--ink-3)" }}>理由：</span>
                {post.delete_reason}
              </p>
            )}
          </div>
        ) : (
          <p className="meta text-[14px] mt-2">作者已删除此帖</p>
        )}
        <div className="mt-8 flex items-center justify-center gap-3">
          <Link href="/" className="btn btn-line btn-sm">
            返回首页
          </Link>
          {post.board?.id ? (
            <Link href={`/?board=${post.board_id}`} className="btn btn-primary btn-sm">
              浏览板块
            </Link>
          ) : null}
        </div>
      </div>
    );
  }

  // 站点设置已在 layout 缓存；关评时不拉评论树，避免首屏 HTML 泄露历史评论
  const allowComments = (await getPublicSettingsCached()).allow_comments !== false;
  const emptyComments: CommentsResponse = {
    comments: [],
    total: 0,
    total_comments: 0,
    page: 1,
    size: 20,
  };
  const [commentsData, me, profile, relatedData] = await Promise.all([
    allowComments ? fetchComments(id, commentPage, cookie) : Promise.resolve(emptyComments),
    getMeCached(cookie || undefined),
    fetchUserProfile(String(post.user.id), 1, cookie).catch(() => null),
    fetchPosts(1, 8, post.board_id, "recommended", "", false, cookie).catch(() => null),
  ]);
  const comments = commentsData.comments;
  const related = (relatedData?.posts ?? []).filter((p) => p.id !== post.id).slice(0, 5);
  const authorPosts = (profile?.posts ?? []).filter((p) => p.id !== post.id).slice(0, 5);

  const publicBody = publicMarkdownForSeo(post.content || "");
  const toc = extractToc(publicBody);
  const headingToc = markdownHeadingToc(toc);
  const readingMinutes = estimateReadingMinutes(publicBody, post.title.length);
  const edited =
    new Date(post.updated_at).getTime() - new Date(post.created_at).getTime() > 60_000;

  // 非公开帖（待审/未通过）仅作者本人与管理团队可看，顶部给出醒目状态
  const isPublished = post.status === "published";
  const postType = normalizePostType(post.post_type);
  const typeStatus = typeStatusLabel(postType, post.type_status);
  const typeStatusCls = typeStatus ? typeStatusClass(postType, post.type_status) : "";
  const canManageTyped =
    !!me.user && (me.user.id === post.user.id || canModerateBoard(me.user, post.board_id));
  const canSeeStatus = canManageTyped;
  const questionSolved = !!post.question?.solved;
  const acceptMode =
    postType === "question" && !questionSolved && canManageTyped
      ? ("question" as const)
      : post.bounty?.can_accept
        ? ("bounty" as const)
        : null;

  const acceptedAnswer =
    post.question?.accepted_answer || post.bounty?.accepted_answer || null;
  const acceptedAnswerVariant =
    postType === "bounty" && post.bounty?.accepted_answer
      ? ("bounty" as const)
      : ("question" as const);
  const questionState =
    postType === "question"
      ? post.question ?? {
          solved: false,
          accepted_comment_id: 0,
          accepted_floor: 0,
          can_accept: canManageTyped,
          can_solve: canManageTyped,
          can_reopen: false,
        }
      : null;

  const jsonLd = {
    "@context": "https://schema.org",
    "@type": "DiscussionForumPosting",
    headline: post.title,
    // 仅公开片段进 JSON-LD，避免 SEO 泄露隐藏块原文
    articleBody: publicBody || undefined,
    datePublished: post.created_at,
    dateModified: post.updated_at,
    author: { "@type": "Person", name: post.user.nickname },
    ...(allowComments ? { commentCount: post.comment_count } : {}),
    interactionStatistic: {
      "@type": "InteractionCounter",
      interactionType: { "@type": "ReadAction" },
      userInteractionCount: post.view_count,
    },
    ...(allowComments &&
      acceptedAnswer &&
      !acceptedAnswer.deleted &&
      !!publicBody && {
        acceptedAnswer: {
          "@type": "Comment",
          text: acceptedAnswer.content,
          dateCreated: acceptedAnswer.created_at,
          author: acceptedAnswer.user
            ? {
                "@type": "Person",
                name: acceptedAnswer.user.nickname || acceptedAnswer.user.username,
              }
            : undefined,
          url: `#comment-${acceptedAnswer.id}`,
        },
      }),
  };

  // 仅正文 Markdown 标题与 headingRenderer 按序对应（时间线日锚点另有 tl-* id）
  let headingIndex = 0;
  const headingRenderer = (Tag: "h2" | "h3") =>
    function Heading({ children }: { children?: React.ReactNode }) {
      const item = headingToc[headingIndex++];
      return (
        <Tag id={item?.id} style={{ scrollMarginTop: 90 }}>
          {children}
        </Tag>
      );
    };

  const tags = post.tags
    ? [...new Set(post.tags.split(",").map((t) => t.trim()).filter(Boolean))]
    : [];

  return (
    <>
      <script type="application/ld+json" dangerouslySetInnerHTML={{ __html: JSON.stringify(jsonLd) }} />
      {/* 移动端浮动操作条：长文读到中途可点赞 / 跳评论框 */}
      <MobilePostBar
        postId={id}
        liked={post.liked}
        likeCount={post.like_count}
        allowComments={allowComments}
      />

      {/* 三栏阅读布局：宽度与首页工作台一致——lg = 左224 + 正文 + 右280，xl = 左240 + 正文 + 右300；以下单栏 */}
      <div className="grid grid-cols-1 items-start lg:grid-cols-[224px_minmax(0,1fr)_280px] xl:grid-cols-[240px_minmax(0,1fr)_300px] gap-x-6 xl:gap-x-7">
        {/* 左栏：板块 / 作者 / 作者其他帖 */}
        {/* sticky 必须直接挂在 grid 子项上：aside 作为 grid item，其可粘行程
            等于行高（正文高度）；内层包裹会被 items-start 缩成内容高而失去行程 */}
        <aside
          className="hidden lg:flex w-56 xl:w-60 shrink-0 sticky top-[var(--rail-top)] flex-col gap-4 max-h-[var(--rail-max-h)] overflow-hidden"
          aria-label="帖子导航"
        >
          <BoardCard board={post.board} />
          {profile && <AuthorRailCard profile={profile} allowComments={allowComments} />}
          {profile && <AuthorPosts posts={authorPosts} />}
        </aside>

        {/* 中栏：正文主体 */}
        <div className="min-w-0 relative">
          <SiteDocBreadcrumb
            items={[
              { href: "/", label: "首页" },
              { href: `/?board=${post.board.id}`, label: post.board.name },
            ]}
          />
          <article className="w-full">
            <div className="panel p-6 sm:p-8">
              <header className="mb-7">
                <div className="flex items-center gap-2 mb-4 flex-wrap">
                  <Link href={`/?board=${post.board.id}`} className="chip">
                    {post.board.name}
                  </Link>
                </div>
                <div className="flex items-start gap-2 flex-wrap mb-6">
                  {/* 仅置顶/推荐在标题左侧 */}
                  {post.pinned > 0 && <span className="badge-pin shrink-0 mt-2 sm:mt-3">置顶</span>}
                  {post.recommended && <span className="badge-rec shrink-0 mt-2 sm:mt-3">推荐</span>}
                  <h1
                    className="text-[26px] sm:text-[34px] font-extrabold leading-tight tracking-tight min-w-0"
                    style={{ color: "var(--ink)" }}
                  >
                    {post.title}
                  </h1>
                  {/* 其余徽章紧跟标题右侧；问答不显示类型徽章 */}
                  {postType !== "discussion" && postType !== "question" && (
                    <span className="badge-type shrink-0 mt-2 sm:mt-3">{postTypeLabel(postType)}</span>
                  )}
                  {typeStatus && typeStatusCls && (
                    <span className={`${typeStatusCls} shrink-0 mt-2 sm:mt-3`}>{typeStatus}</span>
                  )}
                  {post.content_access && post.content_access !== "public" && (
                    <span className="badge-access shrink-0 mt-2 sm:mt-3">
                      {contentAccessLabel(post.content_access)}
                    </span>
                  )}
                  {!isPublished && canSeeStatus && post.status === "pending" && (
                    <span
                      className="inline-flex items-center gap-1 rounded-full px-2.5 py-0.5 text-[11.5px] font-medium shrink-0 mt-2 sm:mt-3"
                      style={{ background: "var(--gold-soft)", color: "var(--gold)" }}
                    >
                      等待审核
                    </span>
                  )}
                  {!isPublished && canSeeStatus && post.status === "rejected" && (
                    <span
                      className="inline-flex items-center gap-1 rounded-full px-2.5 py-0.5 text-[11.5px] font-medium shrink-0 mt-2 sm:mt-3"
                      style={{ background: "var(--danger-soft)", color: "var(--danger)" }}
                    >
                      未通过审核
                    </span>
                  )}
                </div>

                {/* 作者行：头像 + 昵称居左，点赞/更多操作居右 */}
                <div
                  className="flex items-center justify-between gap-4 flex-wrap pb-4"
                  style={{ borderBottom: "1px solid var(--line)" }}
                >
                  <div className="flex items-center gap-3 min-w-0">
                    <Link href={`/u/${post.user.id}`} className="shrink-0" aria-label={post.user.nickname}>
                      <Avatar name={post.user.nickname || post.user.username} src={post.user.avatar || undefined} size={40} />
                    </Link>
                    <Link
                      href={`/u/${post.user.id}`}
                      className="min-w-0 truncate text-[15px] font-semibold hover:text-[var(--accent)] transition-colors"
                      style={{ color: "var(--ink)" }}
                    >
                      {post.user.nickname}
                    </Link>
                  </div>
                  {/* 管理操作已收进单个下拉按钮；普通读者此处不渲染内容 */}
                  <PostActions
                    postId={id}
                    authorId={post.user.id}
                    boardId={post.board_id}
                    pinned={post.pinned}
                    recommended={post.recommended}
                    status={post.status}
                    title={post.title}
                  />
                </div>

                {/* 元信息条：阅读数据居左、发布/更新时间居右（窄屏自动折行）；
                    原右栏“帖子数据”卡已移除，点赞数由点赞按钮承载，此处不重复 */}
                <div className="mt-3.5 flex flex-wrap items-center gap-x-4 gap-y-2">
                  <div className="flex items-center gap-4 meta">
                    <span className="inline-flex items-center gap-1.5" aria-label={`浏览 ${post.view_count} 次`}>
                      <IconEye size={14} /> {post.view_count} 浏览
                    </span>
                    {allowComments ? (
                      <span className="inline-flex items-center gap-1.5" aria-label={`评论 ${post.comment_count} 条`}>
                        <IconComment size={14} /> {post.comment_count} 评论
                      </span>
                    ) : null}
                    <span className="inline-flex items-center gap-1.5" aria-label={`阅读约需 ${readingMinutes} 分钟`}>
                      <Clock size={14} /> 约 {readingMinutes} 分钟读完
                    </span>
                  </div>
                  <p className="meta w-full text-[12px] sm:w-auto sm:ml-auto">
                    发布于 {formatDateTime(post.created_at)}
                    {edited && <> · 更新于 {formatDateTime(post.updated_at)}</>}
                  </p>
                </div>
              </header>

              {tags.length > 0 && (
                <div className="flex flex-wrap gap-2 mb-7">
                  {tags.map((t, i) => (
                    <span key={`${t}-${i}`} className="chip">
                      # {t}
                    </span>
                  ))}
                </div>
              )}

              <MarkdownBody
                content={post.content}
                postId={post.id}
                loggedIn={!!me.user}
                components={{ h2: headingRenderer("h2"), h3: headingRenderer("h3") }}
              />

              <PostAttachments
                postId={post.id}
                items={post.attachments || []}
                loggedIn={!!me.user}
              />

              {/* 类型特殊块（投票/悬赏/抽奖/问答）统一放正文最下方 */}
              <PostInteractPanels
                postId={post.id}
                poll={post.poll}
                bounty={post.bounty}
                lottery={post.lottery}
                loggedIn={!!me.user}
              />
              {allowComments && acceptedAnswer ? (
                <AcceptedAnswerCard
                  answer={acceptedAnswer}
                  variant={acceptedAnswerVariant}
                  solvedAt={
                    post.question?.solved_at ||
                    post.bounty?.accepted_answer?.created_at ||
                    acceptedAnswer.created_at
                  }
                />
              ) : questionState ? (
                <QuestionStatusCard postId={post.id} state={questionState} />
              ) : null}

              {/* 文末点赞：分隔线后居中，唯一的点赞入口（作者行不再放置） */}
              <div
                className="mt-9 pt-7 flex justify-center"
                style={{ borderTop: "1px solid var(--line)" }}
              >
                <LikeButton
                  postId={id}
                  liked={post.liked}
                  likeCount={post.like_count}
                  variant="article"
                />
              </div>
            </div>

            {/* 窄屏作者卡（lg 起由左栏承载，避免重复展示） */}
            {profile && (
              <div className="lg:hidden mt-6">
                <AuthorCardStacked profile={profile} allowComments={allowComments} />
              </div>
            )}

            {/* 关评：前台仅提示不支持评论，不展示历史楼层；非公开帖不提及评论 */}
            {isPublished ? (
              <CommentSection
                postId={id}
                boardId={post.board_id}
                authorId={post.user.id}
                comments={comments}
                total={commentsData.total}
                totalComments={commentsData.total_comments}
                page={commentsData.page}
                size={commentsData.size}
                user={me.user}
                acceptMode={acceptMode}
                acceptedCommentId={
                  post.question?.accepted_comment_id ||
                  post.bounty?.accepted_comment_id ||
                  0
                }
                winnerCommentIds={
                  post.lottery?.drawn
                    ? (post.lottery.winners || [])
                        .map((w) => w.comment_id || 0)
                        .filter((cid) => cid > 0)
                    : []
                }
              />
            ) : allowComments ? (
              <section className="panel p-6 sm:p-8 mt-6 text-center" aria-label="评论区">
                <p className="text-[14px]" style={{ color: "var(--ink-2)" }}>
                  {post.status === "pending" ? "帖子审核通过后开放评论" : "帖子未通过审核，评论已关闭"}
                </p>
                <p className="meta mt-1.5 text-[12.5px]">
                  {me.user?.id === post.user.id
                    ? post.status === "pending"
                      ? "你的帖子正在等待管理员审核，请留意通知"
                      : "如有疑问可联系管理团队"
                    : "审核通过后评论区将自动开放"}
                </p>
              </section>
            ) : null}

            {/* 窄屏相关讨论（lg 起由右栏承载） */}
            <div className="lg:hidden mt-6">
              <RelatedPosts
                posts={related}
                boardId={post.board_id}
                uid="related-inline"
                allowComments={allowComments}
              />
            </div>
          </article>
        </div>

        {/* 右栏：目录 / 同板块热议（阅读数据已并入标题下元信息条） */}
        <aside
          className="hidden lg:flex w-[280px] xl:w-[300px] shrink-0 sticky top-[var(--rail-top)] flex-col gap-4 max-h-[var(--rail-max-h)] overflow-hidden"
          aria-label="阅读辅助"
        >
          {toc.length > 0 && <PostToc items={toc} />}
          <RelatedPosts posts={related} boardId={post.board_id} allowComments={allowComments} />
        </aside>
      </div>

      {/* 给移动端浮动操作条让位，避免遮住页尾内容 */}
      <div className="lg:hidden h-16" aria-hidden />
    </>
  );
}