import { prisma } from "@/lib/db";
import { AddonCard } from "@/components/public/AddonCard";
import Link from "next/link";
import { Package, Search, ChevronLeft, ChevronRight } from "lucide-react";

const categoryLabels: Record<string, string> = {
  general: "通用",
  gameplay: "游戏玩法",
  ui: "界面增强",
  combat: "战斗",
  raid: "团队副本",
  pvp: "PvP",
  tradeskill: "专业技能",
  utility: "实用工具",
};

export const metadata = {
  title: "插件列表 - Nanami",
  description: "浏览和下载 Turtle WoW 插件",
};

export const revalidate = 30;

const PAGE_SIZE = 12;

export default async function AddonsPage({
  searchParams,
}: {
  searchParams: Promise<{ category?: string; search?: string; page?: string }>;
}) {
  const { category, search, page: pageStr } = await searchParams;
  const page = Math.max(1, parseInt(pageStr || "1", 10) || 1);

  const where: Record<string, unknown> = { published: true };
  if (category) where.category = category;
  if (search) {
    where.OR = [
      { name: { contains: search, mode: "insensitive" } },
      { summary: { contains: search, mode: "insensitive" } },
    ];
  }

  const [addons, total, categories] = await Promise.all([
    prisma.addon.findMany({
      where,
      include: {
        releases: {
          where: { isLatest: true },
          select: { version: true },
        },
      },
      orderBy: { totalDownloads: "desc" },
      skip: (page - 1) * PAGE_SIZE,
      take: PAGE_SIZE,
    }),
    prisma.addon.count({ where }),
    prisma.addon.groupBy({
      by: ["category"],
      where: { published: true },
      _count: { id: true },
    }),
  ]);

  const totalPages = Math.ceil(total / PAGE_SIZE);

  const buildHref = (p: number) => {
    const params = new URLSearchParams();
    if (category) params.set("category", category);
    if (search) params.set("search", search);
    if (p > 1) params.set("page", String(p));
    const qs = params.toString();
    return `/addons${qs ? `?${qs}` : ""}`;
  };

  return (
    <section className="mx-auto max-w-6xl px-3 py-10 sm:px-4 sm:py-16">
      <div className="mb-2 flex items-center gap-2 sm:gap-3">
        <Package className="h-5 w-5 text-amber-400 sm:h-6 sm:w-6" />
        <h1 className="text-2xl font-bold text-amber-100 sm:text-3xl">
          插件列表
        </h1>
      </div>
      <p className="mb-6 text-sm text-gray-400 sm:mb-10 sm:text-base">
        浏览和下载 World of Warcraft 插件
      </p>

      {/* Category Filter */}
      <div className="mb-6 flex flex-wrap gap-2 sm:mb-8">
        <Link
          href="/addons"
          className={`rounded-lg px-3 py-1.5 text-xs font-medium transition-all sm:text-sm ${
            !category
              ? "bg-amber-500/20 text-amber-200 ring-1 ring-amber-500/30"
              : "bg-white/[0.04] text-gray-400 hover:bg-white/[0.08] hover:text-gray-300"
          }`}
        >
          全部
        </Link>
        {categories.map((cat) => (
          <Link
            key={cat.category}
            href={`/addons?category=${cat.category}`}
            className={`rounded-lg px-3 py-1.5 text-xs font-medium transition-all sm:text-sm ${
              category === cat.category
                ? "bg-amber-500/20 text-amber-200 ring-1 ring-amber-500/30"
                : "bg-white/[0.04] text-gray-400 hover:bg-white/[0.08] hover:text-gray-300"
            }`}
          >
            {categoryLabels[cat.category] || cat.category} ({cat._count.id})
          </Link>
        ))}
      </div>

      {/* Addon Grid */}
      {addons.length > 0 ? (
        <>
          <div className="grid gap-4 sm:gap-6 sm:grid-cols-2 lg:grid-cols-3">
            {addons.map((addon) => (
              <AddonCard key={addon.id} addon={addon} />
            ))}
          </div>

          {/* Pagination */}
          {totalPages > 1 && (
            <div className="mt-10 flex items-center justify-center gap-2">
              {page > 1 ? (
                <Link
                  href={buildHref(page - 1)}
                  className="flex h-9 w-9 items-center justify-center rounded-lg border border-amber-500/15 bg-white/[0.03] text-gray-400 transition-colors hover:border-amber-500/30 hover:text-amber-200"
                >
                  <ChevronLeft className="h-4 w-4" />
                </Link>
              ) : (
                <span className="flex h-9 w-9 items-center justify-center rounded-lg border border-white/5 text-gray-600">
                  <ChevronLeft className="h-4 w-4" />
                </span>
              )}

              {Array.from({ length: totalPages }, (_, i) => i + 1).map((p) => (
                <Link
                  key={p}
                  href={buildHref(p)}
                  className={`flex h-9 w-9 items-center justify-center rounded-lg text-sm font-medium transition-colors ${
                    p === page
                      ? "bg-amber-500/20 text-amber-200 ring-1 ring-amber-500/30"
                      : "border border-amber-500/10 bg-white/[0.03] text-gray-400 hover:border-amber-500/25 hover:text-amber-200"
                  }`}
                >
                  {p}
                </Link>
              ))}

              {page < totalPages ? (
                <Link
                  href={buildHref(page + 1)}
                  className="flex h-9 w-9 items-center justify-center rounded-lg border border-amber-500/15 bg-white/[0.03] text-gray-400 transition-colors hover:border-amber-500/30 hover:text-amber-200"
                >
                  <ChevronRight className="h-4 w-4" />
                </Link>
              ) : (
                <span className="flex h-9 w-9 items-center justify-center rounded-lg border border-white/5 text-gray-600">
                  <ChevronRight className="h-4 w-4" />
                </span>
              )}
            </div>
          )}
        </>
      ) : (
        <div className="flex flex-col items-center py-20">
          <div className="mb-4 flex h-16 w-16 items-center justify-center rounded-full bg-amber-500/10">
            <Search className="h-7 w-7 text-amber-400/60" />
          </div>
          <p className="text-lg font-medium text-gray-400">
            {search ? `没有找到"${search}"相关的插件` : "暂无插件"}
          </p>
          <p className="mt-1 text-sm text-gray-500">
            {search ? "尝试更换关键词搜索" : "稍后再来查看吧"}
          </p>
        </div>
      )}
    </section>
  );
}