import { Link, useSearchParams } from 'react-router-dom';
import { Store, Handshake, Star, Package } from 'lucide-react';
import GearSwapPage from '@/pages/GearSwapPage';
import TradesPage from '@/pages/TradesPage';
import { TradeReputationPanel } from '@/components/TradeReputationPanel';
import { SellerDashboard } from '@/components/SellerDashboard';
import { useCurrentUser } from '@/hooks/useCurrentUser';
import { LoginArea } from '@/components/auth/LoginArea';
import { cn } from '@/lib/utils';
import { useTranslation } from '@/contexts/language';

const TABS = [
  { id: 'browse', labelKey: 'marketUi.hub.browse', icon: Store },
  { id: 'selling', labelKey: 'marketUi.hub.selling', icon: Package },
  { id: 'trades', labelKey: 'marketUi.hub.myTrades', icon: Handshake },
  { id: 'reputation', labelKey: 'marketUi.hub.reputation', icon: Star },
] as const;

type TabId = (typeof TABS)[number]['id'];

/**
 * Marketplace hub — one home for buying/selling: the gear grid, your trades and
 * your reputation/reviews, as tabs. `/trades` and `/listing/...` deep links keep
 * working; this is just the front door.
 */
export default function MarketplaceHubPage() {
  const { t } = useTranslation();
  const { user } = useCurrentUser();
  // The active tab lives in the URL (?tab=…) so it survives refresh, is
  // shareable, and works with back/forward. Unknown values fall back to Browse.
  const [searchParams, setSearchParams] = useSearchParams();
  const requested = searchParams.get('tab');
  const tab: TabId = (TABS.some((entry) => entry.id === requested) ? requested : 'browse') as TabId;
  const setTab = (id: TabId) => {
    const next = new URLSearchParams(searchParams);
    next.set('tab', id);
    setSearchParams(next, { replace: true });
  };

  return (
    <>
      {/* Tab bar — sticky under the app header, like other toolbars. */}
      <div className="sticky top-14 z-30 border-b border-white/5 bg-black/95 backdrop-blur md:top-16">
        <div className="container max-w-7xl px-4">
          <div className="scroll-container flex gap-1 overflow-x-auto py-2">
            {TABS.map(({ id, labelKey, icon: Icon }) => {
              const active = tab === id;
              return (
                <button
                  key={id}
                  type="button"
                  onClick={() => setTab(id)}
                  aria-pressed={active}
                  className={cn(
                    'flex shrink-0 items-center gap-1.5 rounded-lg px-3 py-1.5 text-xs font-bold uppercase tracking-wide transition-colors',
                    active ? 'bg-[#ccff00] text-black' : 'text-gray-400 hover:bg-white/5 hover:text-white',
                  )}
                >
                  <Icon className="h-3.5 w-3.5" />
                  {t(labelKey)}
                </button>
              );
            })}
          </div>
          <div className="pb-2">
            <Link
              to="/marketplace-guidelines"
              className="text-xs text-gray-500 underline hover:text-gray-300"
            >
              {t('marketTerms.link')}
            </Link>
          </div>
        </div>
      </div>

      {tab === 'browse' && <GearSwapPage />}
      {tab === 'selling' && (
        <div className="container mx-auto max-w-3xl px-4 py-8">
          {user ? (
            <SellerDashboard />
          ) : (
            <div className="space-y-4 py-16 text-center">
              <p className="text-gray-400">{t('marketUi.hub.loginListings')}</p>
              <LoginArea className="justify-center" />
            </div>
          )}
        </div>
      )}
      {tab === 'trades' && <TradesPage />}
      {tab === 'reputation' && (
        <div className="container mx-auto max-w-3xl px-4 py-8">
          {user ? (
            <TradeReputationPanel pubkey={user.pubkey} />
          ) : (
            <div className="space-y-4 py-16 text-center">
              <p className="text-gray-400">{t('marketUi.hub.loginReputation')}</p>
              <LoginArea className="justify-center" />
            </div>
          )}
        </div>
      )}
    </>
  );
}