import Link from "next/link";
import Image from "next/image";
import type { Metadata } from "next";
import { getTranslations } from "next-intl/server";
import { getBookReviews, type BookReview } from "@/lib/directus";
import { getLanguageAlternates, toAbsoluteUrl } from "@/lib/seo";
import SubpageShell from "@/app/_ui/SubpageShell";
import { BackArrow, SubpageIntro, card, ghost, monoLabel } from "@/app/_ui/subpage";

export const revalidate = 300;

export async function generateMetadata({
  params,
}: {
  params: Promise<{ locale: string }>;
}): Promise<Metadata> {
  const { locale } = await params;
  const isDe = locale === "de";
  return {
    title: isDe ? "Bibliothek – Dennis Konkol" : "Library – Dennis Konkol",
    alternates: {
      canonical: toAbsoluteUrl(`/${locale}/books`),
      languages: getLanguageAlternates({ pathWithoutLocale: "books" }),
    },
  };
}

export default async function BooksPage({
  params,
}: {
  params: Promise<{ locale: string }>;
}) {
  const { locale } = await params;
  const t = await getTranslations({ locale, namespace: "books" });
  const common = await getTranslations({ locale, namespace: "common" });

  // Serverseitig laden, damit die Liste auch ohne JavaScript dasteht
  let reviews: BookReview[] = [];
  try {
    reviews = (await getBookReviews(locale)) ?? [];
  } catch (err) {
    if (process.env.NODE_ENV === "development") console.error("Book reviews fetch failed:", err);
  }

  return (
    <SubpageShell locale={locale}>
      <SubpageIntro
        back={
          <Link href={`/${locale}`} className={ghost}>
            <BackArrow /> {common("back")}
          </Link>
        }
        kicker={reviews.length > 0 ? `${String(reviews.length).padStart(2, "0")} ${locale === "de" ? "Bücher" : "books"}` : undefined}
        title={t("title")}
      >
        <p>{t("subtitle")}</p>
      </SubpageIntro>

      {reviews.length === 0 ? (
        <div className={`${card} mt-10 p-6 md:p-8`}>
          <p className="font-display text-[clamp(1.6rem,4vw,2.4rem)] font-extrabold leading-tight tracking-[-0.03em]">{t("empty")}</p>
        </div>
      ) : (
        <ul className="mt-10 grid gap-6 sm:grid-cols-2 md:gap-8 lg:grid-cols-3">
          {reviews.map((review) => (
            <li key={review.id} className="min-w-0">
              <BookCard review={review} locale={locale} />
            </li>
          ))}
        </ul>
      )}
    </SubpageShell>
  );
}

function BookCard({ review, locale }: { review: BookReview; locale: string }) {
  const text = review.review?.replace(/<[^>]*>/g, "").trim();
  const finished = review.finished_at ? new Date(review.finished_at) : null;
  const finishedLabel =
    finished && !Number.isNaN(finished.getTime())
      ? finished.toLocaleDateString(locale === "de" ? "de-DE" : "en-GB", { month: "short", year: "numeric" })
      : null;

  return (
    <article className={`${card} flex h-full flex-col gap-4 p-5 md:p-6`}>
      <div className="grid grid-cols-[88px_minmax(0,1fr)] gap-4">
        <div className="relative h-[128px] overflow-hidden rounded-[3px_6px_6px_3px] border-2 border-ink bg-bookcover">
          {review.book_image && <Image src={review.book_image} alt="" fill sizes="88px" className="object-cover" />}
        </div>
        <div className="min-w-0">
          <h2 className="hyphens-auto break-words font-display text-[1.45rem] font-extrabold leading-[1.02] tracking-[-0.03em] sm:text-[1.6rem]">
            {review.book_title}
          </h2>
          <p className={`${monoLabel} mt-2`}>{review.book_author}</p>
          <div className="mt-3 flex flex-wrap items-center gap-2">
            {review.rating > 0 && (
              <span className="inline-flex items-center gap-1 rounded-full bg-ink px-2.5 py-1 font-mono text-xs text-paper">
                <svg viewBox="0 0 24 24" aria-hidden="true" className="h-3 w-3 fill-signal">
                  <path d="M12 1.5l2.6 7.9 7.9 2.6-7.9 2.6-2.6 7.9-2.6-7.9-7.9-2.6 7.9-2.6z" />
                </svg>
                <span>
                  <span className="sr-only">{locale === "de" ? "Bewertung: " : "Rating: "}</span>
                  {review.rating}/5
                </span>
              </span>
            )}
            {finishedLabel && <span className="font-mono text-xs">{finishedLabel}</span>}
          </div>
        </div>
      </div>
      {text && (
        <blockquote className="mt-auto border-t-2 border-ink pt-4 text-[15px] leading-relaxed">
          <span aria-hidden="true" className="font-display text-2xl font-extrabold leading-none text-signal">
            {locale === "de" ? "„" : "“"}
          </span>
          {text}
        </blockquote>
      )}
    </article>
  );
}