import Link from 'next/link';
import { apiFetch } from '../_lib/api';

interface MeiliHit {
  id: string;
  content: string;
  senderName: string;
  sourceGroupName: string;
  tags: string[];
  approvedAt: number;
}

interface SearchResponse {
  hits: MeiliHit[];
  total: number;
  page: number;
  limit: number;
  query: string;
}

export function SearchResults({
  hits,
  total,
  q,
  page,
}: {
  hits: MeiliHit[];
  total: number;
  q: string;
  page: number;
}) {
  return (
    <div className="flex flex-col gap-4">
      <form method="GET" className="flex gap-2">
        <input
          name="q"
          defaultValue={q}
          placeholder="Search approved messages…"
          className="flex-1 rounded-lg border border-gray-200 px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-blue-400"
        />
        <button
          type="submit"
          className="rounded-lg bg-blue-600 px-4 py-2 text-sm font-medium text-white hover:bg-blue-700"
        >
          Search
        </button>
      </form>

      {hits.length === 0 ? (
        <p className="text-gray-500 text-sm">No results{q ? ` for "${q}"` : ''}.</p>
      ) : (
        <>
          <p className="text-sm text-gray-500">
            {total} result{total !== 1 ? 's' : ''}
          </p>
          <ul className="flex flex-col gap-3">
            {hits.map((hit) => (
              <li key={hit.id}>
                <Link
                  href={`/messages/${hit.id}`}
                  className="block rounded-xl border border-gray-200 bg-white p-4 hover:border-blue-300 hover:shadow-sm transition-colors"
                >
                  <p className="text-sm">{hit.content}</p>
                  <div className="mt-2 flex flex-wrap items-center gap-2 text-xs text-gray-400">
                    <span>{hit.senderName}</span>
                    <span>·</span>
                    <span>{hit.sourceGroupName}</span>
                    <span>·</span>
                    <span>{new Date(hit.approvedAt).toLocaleDateString()}</span>
                    {hit.tags.map((tag) => (
                      <span key={tag} className="rounded-full bg-blue-50 px-2 py-0.5 text-blue-600">
                        {tag}
                      </span>
                    ))}
                  </div>
                </Link>
              </li>
            ))}
          </ul>
        </>
      )}
    </div>
  );
}

export default async function SearchPage({
  searchParams,
}: {
  searchParams: Promise<{ q?: string; page?: string }>;
}) {
  const { q = '', page = '1' } = await searchParams;

  let data: SearchResponse = { hits: [], total: 0, page: 1, limit: 20, query: q };
  try {
    const res = await apiFetch(`/search?q=${encodeURIComponent(q)}&page=${page}`);
    if (res.ok) data = await res.json();
  } catch {
    // API unavailable — render empty results
  }

  return (
    <div className="max-w-2xl">
      <h1 className="text-xl font-semibold mb-4">Search</h1>
      <SearchResults hits={data.hits} total={data.total} q={q} page={Number(page)} />
    </div>
  );
}