import type { Metadata } from "next";
import Link from "next/link";
import { notFound } from "next/navigation";
import { getLocale } from "@/lib/i18n/server";
import { href, t } from "@/lib/i18n";
import { getPaper } from "@/lib/papers/queries";
export async function generateMetadata({ params }: { params: Promise<{ id: string }> }): Promise<Metadata> { const { id } = await params; const p = await getPaper(id); return p ? { title: `${p.identifier} · ${p.title} — read`, robots: { index: false } } : {}; }
export default async function ReadPage({ params }: { params: Promise<{ id: string }> }) {
  const { id } = await params; const locale = await getLocale(); const d = t(locale); const p = await getPaper(id);
  if (!p || !p.has_pdf || !p.file_id) notFound();
  const url = `/api/files/${p.file_id}/${p.slug}-${p.version_label ?? "current"}.pdf?inline=1`;
  return (
    <div className="container py-6">
      <div className="flex flex-wrap items-center gap-3 mb-3"><Link href={href(locale, `/papers/${p.slug}`)} className="btn btn-sm no-underline">← {p.identifier}</Link><h1 className="text-lg truncate">{p.title}</h1><a href={url.replace("?inline=1", "")} className="btn btn-sm ml-auto no-underline">{d.paper.download}</a></div>
      <object data={url} type="application/pdf" className="w-full card" style={{ height: "calc(100dvh - 10rem)" }} aria-label={d.paper.readerTitle}>
        <p className="p-6 text-fg-2">{d.paper.readerFallback} <a href={url.replace("?inline=1", "")} className="text-navy">{d.paper.download}</a></p>
      </object>
    </div>
  );
}