import { useSeoMeta } from '@unhead/react';
import { Link } from 'react-router-dom';
import {
  Shield,
  MapPin,
  Globe,
  Eye,
  Lock,
  Wifi,
  Key,
  CheckCircle2,
  AlertTriangle,
} from 'lucide-react';
import { useTranslation } from '@/contexts/language';

// ─── Small building blocks ────────────────────────────────────────────────────

function Section({
  icon: Icon,
  color,
  title,
  children,
}: {
  icon: React.ComponentType<{ className?: string; style?: React.CSSProperties }>;
  color: string;
  title: string;
  children: React.ReactNode;
}) {
  return (
    <section className="rounded-2xl border border-white/8 bg-white/3 p-5">
      <div className="flex items-center gap-3 mb-3">
        <div
          className="w-9 h-9 rounded-xl flex items-center justify-center flex-shrink-0"
          style={{ background: `${color}1a`, border: `1px solid ${color}40` }}
        >
          <Icon className="h-5 w-5" style={{ color }} />
        </div>
        <h2 className="font-black text-white uppercase tracking-wide text-lg">{title}</h2>
      </div>
      <div className="text-sm text-gray-400 leading-relaxed space-y-3">{children}</div>
    </section>
  );
}

function GoodPoint({ children }: { children: React.ReactNode }) {
  return (
    <div className="flex items-start gap-2.5">
      <CheckCircle2 className="h-4 w-4 text-green-400 flex-shrink-0 mt-0.5" />
      <span>{children}</span>
    </div>
  );
}

function Caveat({ children }: { children: React.ReactNode }) {
  return (
    <div className="flex items-start gap-2.5">
      <AlertTriangle className="h-4 w-4 text-amber-400 flex-shrink-0 mt-0.5" />
      <span>{children}</span>
    </div>
  );
}

export default function PrivacyPage() {
  const { t } = useTranslation();
  useSeoMeta({
    title: t('settingsUi.privacy.seoTitle'),
    description: t('settingsUi.privacy.seoDescription'),
  });

  return (
    <>
      <div className="container max-w-2xl px-4 py-10 md:py-16">
        {/* Hero */}
        <div className="text-center mb-10">
          <div
            className="inline-flex items-center justify-center w-16 h-16 rounded-2xl bg-[#ccff00]/10 border-2 border-[#ccff00]/40 mb-5"
          >
            <Shield className="h-8 w-8 text-[#ccff00]" />
          </div>
          <h1 className="text-4xl md:text-5xl font-black uppercase leading-none mb-4">
            <span className="text-white">{t('settingsUi.privacy.heroBefore')} </span>
            <span style={{ color: '#ccff00' }}>{t('settingsUi.privacy.heroHighlight')}</span>
          </h1>
          <p className="text-gray-400 text-base max-w-lg mx-auto leading-relaxed">
            {t('settingsUi.privacy.heroDesc')}
          </p>
        </div>

        <div className="space-y-4">
          {/* Location stays local */}
          <Section icon={MapPin} color="#ff0040" title={t('settingsUi.privacy.locationTitle')}>
            <p>
              {t('settingsUi.privacy.locationBefore')} <strong className="text-white">{t('settingsUi.privacy.nearMe')}</strong> {t('settingsUi.privacy.locationAfter')}
            </p>
            <GoodPoint>{t('settingsUi.privacy.locationGood1')}</GoodPoint>
            <GoodPoint>{t('settingsUi.privacy.locationGood2')}</GoodPoint>
            <GoodPoint>{t('settingsUi.privacy.locationGood3')}</GoodPoint>
            <GoodPoint>
              {t('settingsUi.privacy.locationGood4')}
            </GoodPoint>
            <p className="text-xs text-gray-500">
              {t('settingsUi.privacy.weatherBefore')}
              <em> {t('settingsUi.privacy.weatherEm')} </em>{t('settingsUi.privacy.weatherAfter')}
            </p>
          </Section>

          {/* Public by design */}
          <Section icon={Eye} color="#ff6600" title={t('settingsUi.privacy.publicTitle')}>
            <p>
              {t('settingsUi.privacy.publicDesc')}
            </p>
            <Caveat>
              <strong className="text-white">{t('settingsUi.privacy.public1Strong')}</strong> {t('settingsUi.privacy.public1')}
            </Caveat>
            <Caveat><strong className="text-white">{t('settingsUi.privacy.public2Strong')}</strong> {t('settingsUi.privacy.public2')}</Caveat>
            <Caveat>{t('settingsUi.privacy.public3')}</Caveat>
            <Caveat>
              <strong className="text-white">{t('settingsUi.privacy.public4Strong')}</strong> {t('settingsUi.privacy.public4')}
            </Caveat>
            <p className="text-xs text-gray-500">
              {t('settingsUi.privacy.publicNoteBefore')} <strong>{t('settingsUi.privacy.notWord')}</strong> {t('settingsUi.privacy.publicNoteAfter')}
            </p>
          </Section>

          {/* Encrypted */}
          <Section icon={Lock} color="#14b8a6" title={t('settingsUi.privacy.encryptedTitle')}>
            <GoodPoint><strong className="text-white">{t('settingsUi.privacy.enc1Strong')}</strong> {t('settingsUi.privacy.enc1Mid')} <strong className="text-white">{t('settingsUi.privacy.enc1Strong2')}</strong> {t('settingsUi.privacy.enc1')}</GoodPoint>
            <GoodPoint><strong className="text-white">{t('settingsUi.privacy.enc2Strong')}</strong> {t('settingsUi.privacy.enc2')}</GoodPoint>
            <GoodPoint><strong className="text-white">{t('settingsUi.privacy.enc3Strong')}</strong> {t('settingsUi.privacy.enc3')}</GoodPoint>
          </Section>

          {/* IP / network */}
          <Section icon={Wifi} color="#a855f7" title={t('settingsUi.privacy.ipTitle')}>
            <p>
              {t('settingsUi.privacy.ipBefore')}{' '}
              <strong className="text-white">{t('settingsUi.privacy.ipAddress')}</strong> {t('settingsUi.privacy.ipAfter')}
            </p>
            <ul className="list-disc pl-5 space-y-1 text-gray-400">
              <li><strong className="text-white">{t('settingsUi.privacy.ipTileStrong')}</strong> {t('settingsUi.privacy.ipTile')}</li>
              <li><strong className="text-white">{t('settingsUi.privacy.ipGeoStrong')}</strong> {t('settingsUi.privacy.ipGeo')}</li>
              <li><strong className="text-white">{t('settingsUi.privacy.ipPushStrong')}</strong> {t('settingsUi.privacy.ipPush')}</li>
              <li><strong className="text-white">{t('settingsUi.privacy.ipBtcStrong')}</strong> {t('settingsUi.privacy.ipBtc')}</li>
              <li><strong className="text-white">{t('settingsUi.privacy.ipRelayStrong')}</strong> {t('settingsUi.privacy.ipRelay')}</li>
              <li><strong className="text-white">{t('settingsUi.privacy.ipMintStrong')}</strong> {t('settingsUi.privacy.ipMint')}</li>
              <li><strong className="text-white">{t('settingsUi.privacy.ipRouteStrong')}</strong> {t('settingsUi.privacy.ipRoute')}</li>
              <li><strong className="text-white">{t('settingsUi.privacy.ipWeatherStrong')}</strong> {t('settingsUi.privacy.ipWeatherMid')} <strong className="text-white">{t('settingsUi.privacy.ipUploadStrong')}</strong>{t('settingsUi.privacy.ipWeather')}</li>
              <li><strong className="text-white">{t('settingsUi.privacy.ipAiStrong')}</strong> {t('settingsUi.privacy.ipAi')}</li>
            </ul>
            <p>
              {t('settingsUi.privacy.ipLink1')}
            </p>
            <p>
              {t('settingsUi.privacy.ipShieldBefore')} <strong className="text-white">{t('settingsUi.privacy.ipMintsStrong')}</strong> {t('settingsUi.privacy.ipShieldAfter')}
            </p>
          </Section>

          {/* VPN / Tor */}
          <Section icon={Globe} color="#06b6d4" title={t('settingsUi.privacy.vpnTitle')}>
            <p>
              {t('settingsUi.privacy.vpnDesc')}
            </p>
            <div className="grid grid-cols-1 sm:grid-cols-2 gap-3 my-1">
              <div className="p-3.5 rounded-xl bg-white/4 border border-white/8">
                <p className="font-bold text-white text-sm mb-1">{t('settingsUi.privacy.vpnReputable')}</p>
                <p className="text-xs text-gray-500">
                  {t('settingsUi.privacy.vpnReputableDesc')}
                </p>
              </div>
              <div className="p-3.5 rounded-xl bg-white/4 border border-white/8">
                <p className="font-bold text-white text-sm mb-1">{t('settingsUi.privacy.torBrowser')}</p>
                <p className="text-xs text-gray-500">
                  {t('settingsUi.privacy.torDesc')}
                </p>
              </div>
            </div>
            <div className="rounded-xl bg-amber-500/8 border border-amber-500/20 p-3.5 space-y-2">
              <p className="text-xs font-black uppercase tracking-wide text-amber-400 flex items-center gap-1.5">
                <AlertTriangle className="h-3.5 w-3.5" /> {t('settingsUi.privacy.readThis')}
              </p>
              <Caveat>
                {t('settingsUi.privacy.caveat1Before')} <strong className="text-white">{t('settingsUi.privacy.ipWord')}</strong> {t('settingsUi.privacy.caveat1')}
              </Caveat>
              <Caveat>
                {t('settingsUi.privacy.caveat2Before')} <strong className="text-white">{t('settingsUi.privacy.nearMeGps')}</strong> {t('settingsUi.privacy.caveat2')}
              </Caveat>
              <Caveat>
                {t('settingsUi.privacy.caveat3')}
              </Caveat>
            </div>
          </Section>

          {/* Keys */}
          <Section icon={Key} color="#facc15" title={t('settingsUi.privacy.keysTitle')}>
            <p>
              {t('settingsUi.privacy.keysBefore')}{' '}
              <strong className="text-white">{t('settingsUi.privacy.signer')}</strong> {t('settingsUi.privacy.keysAfter')}
            </p>
            <Caveat>
              {t('settingsUi.privacy.keysCaveatBefore')} <code className="text-[#ccff00] text-xs bg-white/5 px-1 py-0.5 rounded">nsec</code>{' '}
              {t('settingsUi.privacy.keysCaveatAfter')}
            </Caveat>
          </Section>

          {/* Footer */}
          <div className="text-center pt-4 pb-2">
            <p className="text-xs text-gray-600">
              {t('settingsUi.privacy.footerBefore')}{' '}
              <span className="text-[#ccff00]">{t('settingsUi.privacy.sasquatchName')}</span> {t('settingsUi.privacy.footerMid')}{' '}
              <Link to="/onboarding" className="text-[#ccff00]/80 hover:text-[#ccff00] underline">
                {t('settingsUi.privacy.gettingStarted')}
              </Link>
              {' '}·{' '}
              <Link to="/about" className="text-[#ccff00]/80 hover:text-[#ccff00] underline">
                {t('settingsUi.privacy.about')}
              </Link>
            </p>
          </div>
        </div>
      </div>
    </>
  );
}