import type { Metadata } from "next";
import Link from "next/link";
import { notFound } from "next/navigation";
import { getBookMeta } from "@/lib/api";
import { ogForBook } from "@/lib/og";
import { PageHeader } from "@/components/layout/page-header";
import { JsonLd } from "@/components/seo/json-ld";
import { bookJsonLd } from "@/lib/jsonld";
import { Card, CardContent } from "@/components/ui/card";
import { ExtractedVerseCount } from "../extracted-verse-count";

export function generateMetadata(): Metadata {
  return ogForBook("sb1962");
}

type ChapterInfo = {
  number: number;
  title: string;
  totalVerses: number;
};

export default async function Sb1962Page() {
  const meta = await getBookMeta("sb1962");
  if (!meta) notFound();

  const intro = meta as unknown as {
    book: string;
    title: string;
    author: string;
    description?: string;
    totalChapters: number;
    chapters: ChapterInfo[];
  };

  return (
    <div className="min-h-screen bg-background">
      <JsonLd data={bookJsonLd({ path: "/books/sb1962", name: "Śrīmad-Bhāgavatam (1962 Edition)" })} />
      <PageHeader>
        <Link
          href="/books"
          className="text-sm text-muted-foreground hover:text-foreground transition-colors"
        >
          &larr; Books
        </Link>
        <h1 className="mt-3 text-3xl font-bold text-foreground">
          {intro.title}
        </h1>
        <p className="mt-1 text-muted-foreground">{intro.author}</p>
      </PageHeader>
      <main className="max-w-5xl mx-auto px-6 py-8">
        <Card className="divide-y divide-border py-0">
          <CardContent className="p-0">
            <ul className="divide-y divide-border">
              {intro.chapters.map((ch) => (
                <li key={ch.number}>
                  <Link
                    href={`/books/sb1962/${ch.number}`}
                    className="flex flex-col sm:flex-row sm:items-center sm:justify-between px-5 py-4 gap-1 sm:gap-0 hover:bg-muted transition-colors"
                  >
                    <div>
                      <span className="text-sm text-primary font-medium">
                        Chapter {ch.number}
                      </span>
                      <p className="font-medium text-foreground">{ch.title}</p>
                    </div>
                    <span className="text-sm text-muted-foreground sm:shrink-0 sm:ml-4">
                      <ExtractedVerseCount count={ch.totalVerses} />
                    </span>
                  </Link>
                </li>
              ))}
            </ul>
          </CardContent>
        </Card>
      </main>
    </div>
  );
}