import { ArrowDown, ArrowUp, Pencil, Plus, Trash2 } from "lucide-react";

import type { HomeExperience, HomeTeamBuilding, HomeWildArchive } from "@/api";
import { Button } from "@/components/ui/button";

export type HomeContentSection = "experiences" | "teamBuildings" | "wildArchives";
export type HomeContentItem = HomeExperience | HomeTeamBuilding | HomeWildArchive;

const sectionMeta: Record<HomeContentSection, { label: string; description: string; addLabel: string }> = {
  experiences: { label: "体验推荐", description: "维护首页体验卡片和需求入口。", addLabel: "新增体验" },
  teamBuildings: { label: "团队共创", description: "维护首页团建卡片和需求入口。", addLabel: "新增团建" },
  wildArchives: { label: "极境视界", description: "维护首页案例卡片和需求入口。", addLabel: "新增案例" },
};

export function homeContentSectionMeta(section: HomeContentSection) {
  return sectionMeta[section];
}

export function HomeContentSectionRail({
  section,
  items,
  onSelect,
}: {
  section: HomeContentSection;
  items: Record<HomeContentSection, HomeContentItem[]>;
  onSelect: (section: HomeContentSection) => void;
}) {
  return (
    <section className="module-rail">
      <h3>首页内容</h3>
      {(Object.keys(sectionMeta) as HomeContentSection[]).map((itemSection, index) => {
        const meta = sectionMeta[itemSection];
        const active = itemSection === section;
        return (
          <button
            type="button"
            className={`module-rail-item flex items-center gap-3 text-left${active ? " active" : ""}`}
            key={itemSection}
            aria-pressed={active}
            onClick={() => onSelect(itemSection)}
          >
            <em>{index + 1}</em>
            <span className="min-w-0">
              <b className="block">{meta.label}</b>
              <small className="block truncate">{items[itemSection].length} 条内容</small>
            </span>
          </button>
        );
      })}
    </section>
  );
}

export function HomeContentCardRail({
  section,
  items,
  onCreate,
  onEdit,
  onDelete,
  onMove,
  moving,
}: {
  section: HomeContentSection;
  items: HomeContentItem[];
  onCreate: () => void;
  onEdit: (item: HomeContentItem) => void;
  onDelete: (item: HomeContentItem) => void;
  onMove: (itemId: string, direction: -1 | 1) => void;
  moving?: boolean;
}) {
  const meta = sectionMeta[section];
  return (
    <section className="item-rail">
      <header className="module-data-head">
        <span>
          <h3>{meta.label}</h3>
          <p>{meta.description}</p>
        </span>
        <Button type="button" className="primary-action compact" onClick={onCreate}>
          <Plus size={16} />
          {meta.addLabel}
        </Button>
      </header>
      <div className="mapped-list">
        {items.map((item, index) => (
          <article className="mapped-list-row" key={item.id}>
            <div className="mapped-list-main min-w-0">
              {item.image ? <img src={item.image} alt="" /> : <span className="image-placeholder" />}
              <span className="min-w-0">
                <b className="block truncate">{item.title}</b>
                <small className="block truncate">
                  {"badge" in item ? `${item.category} · ${item.englishTitle}` : "tag" in item ? `${item.tag} · ${item.detailParagraphs?.length ?? 0} 段正文` : `${item.images?.length ?? 0} 张照片 · ${item.demandKeyword}`}
                </small>
              </span>
            </div>
            <div className="flex items-center gap-1">
              <span className={`hidden rounded-full px-2.5 py-1 text-xs font-semibold sm:inline-flex ${item.isActive ? "bg-emerald-50 text-emerald-700" : "bg-slate-100 text-slate-500"}`}>
                {item.isActive ? "已启用" : "已停用"}
              </span>
              <Button type="button" variant="ghost" size="icon" className="module-rail-action" aria-label={`上移${item.title}`} disabled={index === 0 || moving} onClick={() => onMove(item.id, -1)}>
                <ArrowUp size={15} />
              </Button>
              <Button type="button" variant="ghost" size="icon" className="module-rail-action" aria-label={`下移${item.title}`} disabled={index === items.length - 1 || moving} onClick={() => onMove(item.id, 1)}>
                <ArrowDown size={15} />
              </Button>
              <Button type="button" variant="ghost" size="icon" className="module-rail-action" aria-label={`编辑${item.title}`} onClick={() => onEdit(item)}>
                <Pencil size={15} />
              </Button>
              <Button type="button" variant="ghost" size="icon" className="module-rail-action danger" aria-label={`删除${item.title}`} onClick={() => onDelete(item)}>
                <Trash2 size={15} />
              </Button>
            </div>
          </article>
        ))}
        {!items.length ? (
          <div className="rounded-xl border border-dashed border-slate-300 bg-slate-50 p-8 text-center">
            <p className="text-sm font-medium text-slate-700">暂无{meta.label}内容</p>
            <p className="mt-1 text-xs leading-5 text-slate-500">点击右上角开始新增首页卡片。</p>
          </div>
        ) : null}
      </div>
    </section>
  );
}