import { NavLink, useNavigate } from "react-router";

import LightBox, { useLightBox } from "~/components/biz/gallery/image-box";
import { StarFill } from "~/components/ui/icons";
import Pagination from "~/components/ui/pagination";
import { clsn, siteTitle } from "~/utils";
import { getImageThumbUrl } from "~/utils/media";

import type { Route } from "./+types/gallery";
import styles from "./gallery.module.css";

export function meta({ loaderData }: Route.MetaArgs) {
  return [
    { title: siteTitle(loaderData?.currentCategory?.name || "相册") },
    {
      name: "description",
      content:
        loaderData?.currentCategory?.description ||
        "奇趣保罗的照片与收藏",
    },
  ];
}

export async function loader({ request, params }: Route.LoaderArgs) {
  const url = new URL(request.url);
  const page = url.searchParams.get("page") || "1";

  const searchParams = new URLSearchParams();
  searchParams.append("page", page);

  const category = await fetch(`https://paul.ren/api/gallery`).then((res) => res.json()) as unknown as API.PageResponse<API.Gallery.ICateData[]>;
  let cateIndex = -1;

  if (params["*"]) {
    cateIndex = category.data.findIndex((item) => item.slug === params["*"]);

    if (cateIndex === -1) {
      throw new Response("Not Found", { status: 404 });
    }

    searchParams.append("cate", String(category.data[cateIndex].id));
  }

  const media = await fetch(`https://paul.ren/api/media/?${searchParams.toString()}`).then((res) => res.json()) as unknown as API.PageResponse<API.Media.IMediaData[]>;
  const currentCategory = cateIndex > -1 ? category.data[cateIndex]: undefined;

  return { media, category, currentCategory, page };
}

export default function Gallery({ loaderData }: Route.ComponentProps) {
  const navigate = useNavigate();
  const { media, category, page } = loaderData;

  // const lightBoxInst = useRef();
  const { ref: lightBoxInst, open } = useLightBox();

  const onChangePage = (value: number) => {
    navigate({
      search: `?page=${value}`,
    });
  };

  return (
    <main className="px-2 py-24 max-w-screen-2xl mx-auto">
      <section className="mb-12">
        <h1 className="text-center text-5xl/tight md:text-7xl/tight mb-12">相册</h1>
        <div className="flex overflow-auto whitespace-nowrap">
          <NavLink to="/gallery" end className={({ isActive }) => clsn("inline-block px-3 py-1 ml-auto mr-3", isActive && "text-pink-400 font-bold")}>
            所有
          </NavLink>
          {category.data.map((item) => (
            <NavLink key={item.slug} to={`/gallery/${item.slug}`} className={({ isActive }) => clsn("inline-block px-3 py-1 mr-3 last:mr-auto", isActive && "text-pink-400 font-bold")}>
              {item.name}
            </NavLink>
          ))}
        </div>
      </section>
      <section className="grid gap-4 lg:gap-8 grid-cols-2 lg:grid-cols-3 xl:grid-cols-4 mb-12">
        {media.data.map((item, index) => (
          <div
            key={item.id}
            role="button"
            tabIndex={0}
            onKeyDown={() => {}}
            className="relative bg-white rounded-xl overflow-hidden border-4 border-transparent hover:border-pink-400 transition-colors border-b-4 border-b-cyan-200 group cursor-pointer"
            onClick={() => open(index)}
          >
            <img className={styles.image} src={getImageThumbUrl(item.url)} alt={item.title} loading="lazy" />
            {item.content && (
              <div className={clsn("absolute top-0 left-0 right-0 bottom-0 bg-black/60 p-4 sm:p-6 text-white leading-7 transition-opacity duration-300 whitespace-pre-wrap opacity-0 group-hover:opacity-100", styles.desc)}>
                {item.content}
              </div>
            )}
            <div className="p-4 sm:p-6 -mt-6 sm:-mt-12">
              <span className="block text-sm mb-4 opacity-60">{item.take_time.substring(0, 10)}</span>
              <h1 className="text-pink-400 text-xl sm:text-2xl font-bold text-ellipsis overflow-hidden">
                {item.title}
                {item.starred && (
                  <StarFill className=" text-yellow-400 w-6 h-6 inline-block ml-2 align-[-.1em]" />
                )}
              </h1>
            </div>
          </div>
        ))}
      </section>
      <section className="text-center">
        <Pagination current={Number(page)} size={20} total={media.count} onClick={onChangePage} />
      </section>

      <LightBox ref={lightBoxInst} list={media.data} />
    </main>
  );
}