import { notFound } from "next/navigation";
import { prisma } from "@/lib/db";
import { ChapterList } from "@/components/ChapterList";
import type { Metadata } from "next";

type Props = {
  params: Promise<{ slug: string }>;
};

export async function generateMetadata({ params }: Props): Promise<Metadata> {
  const { slug } = await params;
  const manga = await prisma.manga.findUnique({ where: { slug } });
  if (!manga) return { title: "Not Found" };
  return {
    title: manga.title,
    description: manga.description,
    openGraph: {
      title: manga.title,
      description: manga.description,
      images: [manga.coverUrl],
    },
  };
}

export default async function MangaDetailPage({ params }: Props) {
  const { slug } = await params;

  const manga = await prisma.manga.findUnique({
    where: { slug },
    include: {
      chapters: {
        orderBy: { number: "asc" },
      },
    },
  });

  if (!manga) notFound();

  return (
    <div className="max-w-3xl mx-auto px-4 py-6">
      {/* Hero section */}
      <div className="flex gap-4 mb-6">
        <div className="w-28 sm:w-36 shrink-0">
          <div className="aspect-[3/4] rounded-xl overflow-hidden bg-card">
            <img
              src={manga.coverUrl}
              alt={manga.title}
              className="w-full h-full object-cover"
            />
          </div>
        </div>
        <div className="flex-1 min-w-0 py-1">
          <h1 className="text-xl sm:text-2xl font-bold leading-tight mb-2">
            {manga.title}
          </h1>
          <div className="flex flex-wrap items-center gap-2 mb-3">
            <span className="px-2 py-0.5 text-[11px] font-semibold bg-accent/20 text-accent rounded-full">
              {manga.genre}
            </span>
            <span className="px-2 py-0.5 text-[11px] font-semibold bg-surface text-muted rounded-full border border-border">
              {manga.status}
            </span>
            <span className="text-xs text-muted">
              {manga.chapters.length} chapter
              {manga.chapters.length !== 1 ? "s" : ""}
            </span>
          </div>
          <p className="text-sm text-muted leading-relaxed line-clamp-4 sm:line-clamp-none">
            {manga.description}
          </p>
        </div>
      </div>

      {/* Continue reading button */}
      {manga.chapters.length > 0 && (
        <a
          href={`/manga/${manga.slug}/${manga.chapters[0].number}`}
          className="block w-full py-3 mb-6 text-center text-sm font-semibold bg-accent hover:bg-accent-hover text-white rounded-xl transition-colors active:scale-[0.98]"
        >
          Start Reading — Ch. {manga.chapters[0].number}
        </a>
      )}

      {/* Chapters */}
      <div>
        <h2 className="text-lg font-bold mb-3">Chapters</h2>
        <ChapterList chapters={manga.chapters} mangaSlug={manga.slug} />
      </div>
    </div>
  );
}