import type {
  ActiveUser,
  AnnouncementSummary,
  Board,
  BoardModerator,
  BoardSidebarStats,
  BoardWithCount,
  CheckinStatus,
  NewUser,
  OverviewStats,
  PostListItem,
  PublicAdItem,
  PublicSponsorItem,
  SidebarPageItem,
  User,
  UserProfile,
} from "@/lib/api";
import PostToc, { type TocItem } from "@/components/PostToc";
import { WorkspaceNavPanel } from "@/components/home/WorkspaceNav";
import {
  PulseCard,
  Announcements,
  AdsPanel,
  SponsorsPanel,
  HotRanking,
  NewUsers,
  ActiveUsers,
  FriendLinks,
  AboutSite,
} from "@/components/home/CommunityPanels";
import {
  Moderators,
  BoardIntro,
  BoardPulse,
  BoardHot,
  BoardActive,
} from "@/components/home/BoardPanels";
import {
  BoardCard as PostBoardCard,
  AuthorRailCard as PostAuthorCard,
  AuthorPosts as PostAuthorPosts,
} from "@/components/post/PostRailBlocks";

// 侧栏块 props 汇总：页面把已有数据整包传入，块按需取用；
// 某块所需数据缺失（如板块态没传 stats）时对应块渲染为空，安全跳过。
export interface SidebarBlockProps {
  allowComments: boolean;
  user?: User | null;
  checkin?: CheckinStatus | null;

  // home 范围
  boards?: BoardWithCount[];
  stats?: OverviewStats;
  announcements?: AnnouncementSummary[];
  canManageAnnouncements?: boolean;
  ads?: PublicAdItem[];
  adsPanelTitle?: string;
  adsEnabled?: boolean;
  sponsors?: PublicSponsorItem[];
  sponsorsPanelTitle?: string;
  sponsorsEnabled?: boolean;
  hot?: PostListItem[];
  newUsers?: NewUser[];
  activeUsers?: ActiveUser[];
  sidebarPages?: SidebarPageItem[];
  siteDescription?: string;
  canManagePages?: boolean;

  // board 范围
  board?: BoardWithCount;
  moderators?: BoardModerator[];
  boardStats?: BoardSidebarStats;
  boardHot?: PostListItem[];
  boardActiveUsers?: ActiveUser[];

  // post 范围
  postBoard?: Board;
  authorProfile?: UserProfile;
  authorPosts?: PostListItem[];
  toc?: TocItem[];
}

// 内置块注册表：key → 组件。数据未就绪或未知 key 返回 null（渲染层静默跳过）。
export function renderSidebarBlock(key: string, p: SidebarBlockProps) {
  switch (key) {
    case "board_nav":
      return p.boards ? <WorkspaceNavPanel boards={p.boards} user={p.user} /> : null;
    case "pulse":
      return p.stats ? (
        <PulseCard stats={p.stats} checkin={p.checkin} allowComments={p.allowComments} />
      ) : null;
    case "announcements":
      return p.announcements ? (
        <Announcements items={p.announcements} canManageAnnouncements={p.canManageAnnouncements} />
      ) : null;
    case "ads":
      return p.ads && p.adsEnabled !== false ? (
        <AdsPanel items={p.ads} title={p.adsPanelTitle || "自助推广"} enabled />
      ) : null;
    case "sponsors":
      return p.sponsors && p.sponsorsEnabled !== false ? (
        <SponsorsPanel
          items={p.sponsors}
          title={p.sponsorsPanelTitle || "赞助商"}
          enabled
        />
      ) : null;
    case "hot":
      return p.hot ? <HotRanking posts={p.hot} allowComments={p.allowComments} /> : null;
    case "new_users":
      return p.newUsers ? <NewUsers users={p.newUsers} /> : null;
    case "active_users":
      return p.activeUsers ? (
        <ActiveUsers users={p.activeUsers} allowComments={p.allowComments} />
      ) : null;
    case "friend_links":
      return <FriendLinks />;
    case "about_site":
      return p.sidebarPages || p.canManagePages ? (
        <AboutSite
          pages={p.sidebarPages ?? []}
          siteDescription={p.siteDescription}
          canManagePages={p.canManagePages}
        />
      ) : null;
    case "board_moderators":
      return p.moderators ? <Moderators items={p.moderators} /> : null;
    case "board_intro":
      return p.board ? <BoardIntro board={p.board} /> : null;
    case "board_pulse":
      return p.boardStats ? (
        <BoardPulse stats={p.boardStats} checkin={p.checkin} allowComments={p.allowComments} />
      ) : null;
    case "board_hot":
      return p.boardHot ? (
        <BoardHot posts={p.boardHot} allowComments={p.allowComments} />
      ) : null;
    case "board_active":
      return p.boardActiveUsers ? (
        <BoardActive users={p.boardActiveUsers} allowComments={p.allowComments} />
      ) : null;
    case "post_board":
      return p.postBoard ? <PostBoardCard board={p.postBoard} /> : null;
    case "post_author":
      return p.authorProfile ? (
        <PostAuthorCard profile={p.authorProfile} allowComments={p.allowComments} />
      ) : null;
    case "post_author_posts":
      return p.authorPosts ? <PostAuthorPosts posts={p.authorPosts} /> : null;
    case "post_toc":
      return p.toc && p.toc.length > 0 ? <PostToc items={p.toc} /> : null;
    default:
      return null;
  }
}