import { useTranslation } from "react-i18next";
import { Bug, Sparkles } from "lucide-react";
import { RELEASE_NOTES } from "../lib/releaseNotes";
import { formatDate } from "../lib/format";
import Modal from "./ui/Modal";

// The release date in the UI language — `toLocaleDateString(undefined, …)` formats in the BROWSER's
// locale, which put Hungarian-shaped dates in an English release-notes list. Unparseable input falls
// back to the raw string (a hand-written note could carry anything).
function fmtDate(d: string, lang: string): string {
  return isNaN(new Date(d).getTime()) ? d : formatDate(d, lang);
}

// Public release notes (chores are intentionally omitted here). `highlight` rings the
// version the user just updated to when opened from the new-version banner.
export default function ReleaseNotes({
  onClose,
  highlight,
}: {
  onClose: () => void;
  highlight?: string;
}) {
  const { t, i18n } = useTranslation();
  // Ring the newest note if `highlight` isn't one of the listed versions — e.g. a Vite dev build
  // where the caller's FRONTEND_VERSION is "dev", or a VERSION bump whose note hasn't landed yet —
  // so the banner always rings *something* current instead of nothing.
  const active = RELEASE_NOTES.some((r) => r.version === highlight)
    ? highlight
    : RELEASE_NOTES[0]?.version;
  return (
    <Modal title={t("about.releaseNotes")} onClose={onClose} maxWidth="max-w-2xl">
      <div className="flex flex-col gap-6">
        {RELEASE_NOTES.map((r) => (
          <section
            key={r.version}
            className={active === r.version ? "rounded-xl ring-1 ring-accent/40 p-3 -m-3" : ""}
          >
            <div className="flex items-baseline gap-2 flex-wrap">
              <h3 className="text-base font-semibold">v{r.version}</h3>
              <span className="text-xs text-muted">{fmtDate(r.date, i18n.language)}</span>
              {r.sha && (
                <span className="text-2xs font-mono text-muted bg-surface px-1.5 py-0.5 rounded-sm">
                  {r.sha}
                </span>
              )}
            </div>
            {r.summary && <p className="text-sm text-muted mt-1">{r.summary}</p>}

            {r.features?.length ? (
              <div className="mt-3">
                <div className="flex items-center gap-1.5 text-xs font-semibold uppercase tracking-wide text-accent">
                  <Sparkles className="w-3.5 h-3.5" /> {t("about.new")}
                </div>
                <ul className="mt-1.5 space-y-1.5 text-sm">
                  {r.features.map((f, i) => (
                    <li key={i} className="flex gap-2">
                      <span className="text-accent">•</span>
                      <span>{f}</span>
                    </li>
                  ))}
                </ul>
              </div>
            ) : null}

            {r.fixes?.length ? (
              <div className="mt-3">
                <div className="flex items-center gap-1.5 text-xs font-semibold uppercase tracking-wide text-muted">
                  <Bug className="w-3.5 h-3.5" /> {t("about.fixes")}
                </div>
                <ul className="mt-1.5 space-y-1.5 text-sm">
                  {r.fixes.map((f, i) => (
                    <li key={i} className="flex gap-2">
                      <span className="text-muted">•</span>
                      <span>{f}</span>
                    </li>
                  ))}
                </ul>
              </div>
            ) : null}
          </section>
        ))}
      </div>
    </Modal>
  );
}