import type { Metadata } from 'next';
import { notFound } from 'next/navigation';
import { requireUser } from '@/lib/auth/session';
import { getCollectionDetail } from '@/lib/account/queries';
import { getDisplay } from '@/lib/account/display';
import { confidenceLabel, fmtDate } from '@/lib/format';
import { PrintButton } from './print-button';

export const metadata: Metadata = { title: 'Insurance schedule', robots: { index: false } };

/** Printable schedule of items with values, sources and confidence — a document, not an appraisal. */
export default async function InsurancePage({ params }: { params: Promise<{ id: string }> }) {
  const { id } = await params;
  const u = await requireUser(`/collections/${id}/insurance`);
  const detail = await getCollectionDetail(u.id, id);
  if (!detail) notFound();
  const d = await getDisplay();
  const { collection: c, summary: s, items } = detail;
  const rows = [...s.items].sort((a, b) => (b.valueUsd ?? 0) - (a.valueUsd ?? 0));
  return (
    <div className="mx-auto max-w-4xl print:max-w-none">
      <div className="mb-4 flex items-center justify-between print:hidden">
        <p className="text-sm text-muted">Use your browser&apos;s print dialog to save as PDF.</p>
        <PrintButton />
      </div>
      <article className="card p-8 print:border-0 print:p-0 print:shadow-none">
        <header className="flex items-start justify-between border-b border-border pb-4">
          <div>
            <p className="text-[11px] font-semibold uppercase tracking-wider text-subtle">RareIndex · Collection schedule</p>
            <h1 className="mt-1 text-2xl font-semibold tracking-tight">{c.name}</h1>
            <p className="text-sm text-muted">
              Prepared for {u.name ?? u.email} · {fmtDate(new Date())} · values in {d.currency}
            </p>
          </div>
          <div className="text-right">
            <p className="text-[11px] uppercase tracking-wider text-subtle">Total estimated value</p>
            <p className="num text-2xl font-semibold">{s.valuedCount ? d.money(s.valueUsd) : '—'}</p>
            <p className="text-xs text-muted">
              {s.valuedCount}/{s.itemCount} items valued · confidence {confidenceLabel(s.confidence)}
            </p>
          </div>
        </header>
        <table className="mt-4 w-full text-[12px]">
          <thead>
            <tr className="border-b border-border text-left text-[10px] uppercase tracking-wider text-subtle">
              <th className="py-1.5 pr-2">#</th>
              <th className="py-1.5 pr-2">Item</th>
              <th className="py-1.5 pr-2">Grade / condition</th>
              <th className="py-1.5 pr-2">Cert / serial</th>
              <th className="py-1.5 pr-2 text-right">Qty</th>
              <th className="py-1.5 pr-2 text-right">Acquired</th>
              <th className="py-1.5 pr-2 text-right">Cost</th>
              <th className="py-1.5 pr-2 text-right">Est. value</th>
              <th className="py-1.5 text-right">Basis</th>
            </tr>
          </thead>
          <tbody>
            {rows.map((i, idx) => {
              const src = items.find((x) => x.id === i.id)!;
              return (
                <tr key={i.id} className="border-b border-border align-top">
                  <td className="py-1.5 pr-2 text-subtle">{idx + 1}</td>
                  <td className="py-1.5 pr-2">
                    <p className="font-medium">{i.title}</p>
                    <p className="text-[11px] text-muted">{i.categorySlug.replace(/_/g, ' ')}{src.source ? ` · from ${src.source}` : ''}</p>
                  </td>
                  <td className="py-1.5 pr-2">{src.variantLabel ?? (i.grader ? `${i.grader.toUpperCase()} ${i.grade ?? ''}` : src.condition ?? '—')}</td>
                  <td className="py-1.5 pr-2 font-mono text-[11px]">{[src.certificationNumber, src.serial].filter(Boolean).join(' / ') || '—'}</td>
                  <td className="num py-1.5 pr-2 text-right">{i.quantity}</td>
                  <td className="num py-1.5 pr-2 text-right">{i.acquiredAt ?? '—'}</td>
                  <td className="num py-1.5 pr-2 text-right">{i.costUsd === null ? '—' : d.money(i.costUsd)}</td>
                  <td className="num py-1.5 pr-2 text-right font-medium">{i.valueUsd === null ? 'unavailable' : d.money(i.valueUsd)}</td>
                  <td className="py-1.5 text-right text-[11px] text-muted">{i.valueSource === 'manual' ? 'owner estimate' : i.valueSource === 'none' ? '—' : `RIV · ${confidenceLabel(i.confidence).toLowerCase()}`}</td>
                </tr>
              );
            })}
          </tbody>
        </table>
        <footer className="mt-6 text-[11px] leading-relaxed text-subtle">
          <p>
            RIV (RareIndex Valuation) figures are statistical estimates derived from observed public sales and listings, each with a confidence level and sample size; they are not appraisals, authentication or a guarantee of insurable value. Items marked &quot;owner estimate&quot; use a value entered by the collection owner. Items marked &quot;unavailable&quot; have insufficient market evidence. Historical purchase costs are converted to {d.currency} at the exchange rate of the acquisition date. RareIndex does not authenticate items.
          </p>
        </footer>
      </article>
    </div>
  );
}