import Link from "next/link";
import type { PostMeta } from "@/lib/posts";

type FieldNotesProps = {
  posts: PostMeta[];
};

function formatPostDate(date: string) {
  const parsed = new Date(date);

  if (Number.isNaN(parsed.getTime())) return date;

  return parsed.toLocaleDateString("en-US", {
    year: "numeric",
    month: "short",
    day: "2-digit",
  });
}

export function FieldNotes({ posts }: FieldNotesProps) {
  const recentPosts = posts.slice(0, 4);

  return (
    <section
      id="notes"
      className="border-y border-blacksite-line bg-blacksite-bg2 px-4 py-24 text-blacksite-text sm:px-6 lg:px-8"
    >
      <div className="mx-auto max-w-7xl">
        <div className="mb-10 flex flex-col gap-4 sm:flex-row sm:items-end sm:justify-between">
          <div>
            <p className="section-label mb-3">FIELD NOTES /.04</p>
            <h2 className="font-display text-4xl font-semibold tracking-[-0.04em] text-blacksite-text sm:text-6xl">
              Blog telemetry from the archive.
            </h2>
          </div>
          <Link
            href="/blog/"
            className="section-label w-fit rounded-md border border-blacksite-line px-4 py-3 !text-blacksite-text transition-colors hover:border-signal-cyan/70 hover:!text-signal-cyan focus-visible:outline-signal-cyan"
          >
            All field notes →
          </Link>
        </div>

        {recentPosts.length > 0 ? (
          <div className="divide-y divide-blacksite-line border-y border-blacksite-line">
            {recentPosts.map((post) => (
              <Link
                key={post.slug}
                href={`/blog/${post.slug}/`}
                className="group grid gap-3 px-0 py-6 transition-colors hover:bg-blacksite-surface/55 focus-visible:outline-signal-cyan sm:grid-cols-[12rem_minmax(0,1fr)] sm:px-4"
              >
                <time className="section-label pt-1" dateTime={post.date}>
                  {formatPostDate(post.date)}
                </time>
                <span className="min-w-0">
                  <span className="block font-display text-2xl font-medium tracking-[-0.03em] text-blacksite-text transition-colors group-hover:text-signal-cyan group-focus-visible:text-signal-cyan">
                    {post.title}
                  </span>
                  {post.excerpt && (
                    <span className="mt-2 block max-w-3xl text-sm leading-6 text-blacksite-muted">
                      {post.excerpt}
                    </span>
                  )}
                </span>
              </Link>
            ))}
          </div>
        ) : (
          <div className="border border-dashed border-blacksite-line bg-blacksite-surface/45 p-8 sm:p-10">
            <p className="section-label mb-5 !text-blacksite-text">
              NO FIELD NOTES ON RECORD — ARCHIVE OPENS SOON
            </p>
            <Link
              href="/blog/"
              className="section-label inline-flex rounded-md border border-blacksite-line px-4 py-3 !text-blacksite-text transition-colors hover:border-signal-cyan/70 hover:!text-signal-cyan focus-visible:outline-signal-cyan"
            >
              Visit archive →
            </Link>
          </div>
        )}
      </div>
    </section>
  );
}