import type { Metadata } from "next";
import Link from "next/link";
import { Page, PageHeader } from "@/components/ui/section";
import { RightsBadge } from "@/components/ui/status-badge";
import { apiOptional } from "@/lib/api";
import { DISCLAIMER } from "@/lib/site";
import type { Source } from "@/lib/types";

export const metadata: Metadata = { title: "Data rights & licensing", description: "How Market Atlas classifies the rights attached to every source and what each status allows.", alternates: { canonical: "/licensing" } };
export const dynamic = "force-dynamic";

const STATUSES: Array<[string, string]> = [
  ["PUBLIC_OPEN", "Public data with no usage restriction known to us."],
  ["PUBLIC_ATTRIBUTED", "Public data displayed with attribution to the source (venue feeds, reference files). Not for raw-feed commercial redistribution."],
  ["OFFICIAL_OPEN_DATA", "Government or central-bank open data (public domain or open licence with attribution)."],
  ["LICENSED", "Data licensed to Market Atlas (including our sister platform HF Market Data) — redistribution within the licence."],
  ["DELAYED", "Delayed market data that may be displayed publicly with attribution and a delay notice (Cboe: 15 minutes)."],
  ["INDICATIVE", "Indicative values (reference fixings, averages) — informational, not tradable."],
  ["PUBLIC_RESTRICTED_REDISTRIBUTION", "Publicly accessible but redistribution is restricted: used internally for validation only; public values are withheld."],
  ["RESEARCH_ONLY", "Usable for internal research; never displayed."],
  ["INTERNAL_ONLY", "Internal signals (Market Atlas' own calendar/monitoring) or values built only from restricted sources."],
  ["UNKNOWN", "Rights not yet classified — never exposed publicly until reviewed."],
];

export default async function LicensingPage() {
  const sources = (await apiOptional<Source[]>("/v1/sources"))?.filter((s) => s.category !== "INTERNAL") ?? [];
  return (
    <Page>
      <PageHeader kicker="Legal" title="Data rights & licensing" lead="Technical accessibility does not imply redistribution rights. Every connector declares a rights status; the platform enforces it — quotes built only from restricted sources are withheld, while their provenance metadata stays visible." />
      <div className="prose-ma max-w-3xl">
        <h2>Rights statuses</h2>
        <table>
          <thead>
            <tr>
              <th>Status</th>
              <th>What it means</th>
            </tr>
          </thead>
          <tbody>
            {STATUSES.map(([s, d]) => (
              <tr key={s}>
                <td>
                  <RightsBadge status={s} />
                  <code className="ml-2">{s}</code>
                </td>
                <td>{d}</td>
              </tr>
            ))}
          </tbody>
        </table>
        <h2>What Market Atlas never does</h2>
        <ul>
          <li>Bypass authentication, paywalls, CAPTCHAs or access controls; impersonate users; use leaked credentials or private sessions.</li>
          <li>Reverse-engineer protected feeds for unauthorized redistribution or evade a source's restrictions.</li>
          <li>Present delayed, end-of-day or stale values as real time.</li>
        </ul>
        <h2>Attributions</h2>
        {sources.length ? (
          <table>
            <thead>
              <tr>
                <th>Source</th>
                <th>Rights</th>
                <th>Notes</th>
              </tr>
            </thead>
            <tbody>
              {sources.map((s) => (
                <tr key={s.id}>
                  <td>
                    {s.homepage ? (
                      <a href={s.homepage} target="_blank" rel="noopener noreferrer">
                        {s.name}
                      </a>
                    ) : (
                      s.name
                    )}
                    <div className="text-xs text-ink-3">{s.organization}</div>
                  </td>
                  <td>
                    <RightsBadge status={s.rights_status} />
                  </td>
                  <td>
                    {s.rights_notes}
                    {s.terms_url && (
                      <>
                        {" "}
                        <a href={s.terms_url} target="_blank" rel="noopener noreferrer">
                          terms ↗
                        </a>
                      </>
                    )}
                  </td>
                </tr>
              ))}
            </tbody>
          </table>
        ) : (
          <p>Source attributions are listed on the <Link href="/sources">sources</Link> page.</p>
        )}
        <h2>Disclaimer</h2>
        <p>{DISCLAIMER} Final legal language will be reviewed before any commercial launch.</p>
      </div>
    </Page>
  );
}