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

// ─── 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() {
  useSeoMeta({
    title: 'Privacy — SkateSpots',
    description:
      'How SkateSpots handles your data: your GPS stays on your device, spots you publish are public, and how to hide your IP with a VPN or Tor if you want to.',
  });

  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">Your </span>
            <span style={{ color: '#ccff00' }}>Privacy</span>
          </h1>
          <p className="text-gray-400 text-base max-w-lg mx-auto leading-relaxed">
            No tracking, no ads, no data selling. Here's exactly what stays on your device,
            what's public, and how to lock things down further if you want to.
          </p>
        </div>

        <div className="space-y-4">
          {/* Location stays local */}
          <Section icon={MapPin} color="#ff0040" title="Your location stays on your device">
            <p>
              When you tap <strong className="text-white">"Near Me,"</strong> your GPS location is
              read on your device and used only to center the map and sort nearby spots.
            </p>
            <GoodPoint>It is <strong className="text-white">never</strong> published to Nostr.</GoodPoint>
            <GoodPoint>It is <strong className="text-white">never</strong> sent to SkateSpots — there is no SkateSpots server collecting it.</GoodPoint>
            <GoodPoint>It is <strong className="text-white">never</strong> shared with any third party.</GoodPoint>
            <GoodPoint>
              On the native app we use your phone's own location system directly and skip Google
              Play Services — so it works on de-Googled phones (GrapheneOS, /e/OS) and Google
              never sees it.
            </GoodPoint>
            <p className="text-xs text-gray-500">
              Weather is off by default. When you turn it on, it looks up conditions for the
              <em> spot's </em> public location — not yours.
            </p>
          </Section>

          {/* Public by design */}
          <Section icon={Eye} color="#ff6600" title="What's public by design">
            <p>
              SkateSpots is a shared map, so some things are meant to be seen by everyone. When you
              choose to publish them, these are public on the Nostr network:
            </p>
            <Caveat>
              <strong className="text-white">Spots you add</strong> — including their coordinates.
              If you add a spot at your exact location, that location becomes public. Think before
              you drop a pin on your own driveway.
            </Caveat>
            <Caveat><strong className="text-white">Reviews, comments, and your public profile</strong> (name, picture).</Caveat>
            <Caveat>Who you follow, and public reactions.</Caveat>
            <Caveat>
              <strong className="text-white">Zaps</strong> are public by default: a zap ties your
              account — often your lightning address — to the post you paid and to the tip itself.
              Your wallet can send it anonymously if you'd rather it didn't.
            </Caveat>
            <p className="text-xs text-gray-500">
              A VPN or Tor does <strong>not</strong> hide the content of what you publish — a spot's
              coordinates are public regardless. Privacy tools hide your network identity (your IP),
              not the things you choose to post.
            </p>
          </Section>

          {/* Encrypted */}
          <Section icon={Lock} color="#14b8a6" title="What's private &amp; encrypted">
            <GoodPoint><strong className="text-white">Direct messages</strong> and <strong className="text-white">crew chats</strong> are end-to-end encrypted (NIP-17). Only the participants can read them.</GoodPoint>
            <GoodPoint><strong className="text-white">My Stash</strong> — your private gear inventory — is encrypted to your own key.</GoodPoint>
            <GoodPoint><strong className="text-white">Crew-only members</strong> can choose to be visible only to their crew-mates.</GoodPoint>
          </Section>

          {/* IP / network */}
          <Section icon={Wifi} color="#a855f7" title="What leaves your device: your IP">
            <p>
              Like every website, the servers SkateSpots talks to can see your{' '}
              <strong className="text-white">IP address</strong> (a rough indicator of your region).
              This is normal for any web or map app and isn't unique to us. Those servers are:
            </p>
            <ul className="list-disc pl-5 space-y-1 text-gray-400">
              <li><strong className="text-white">Map tiles</strong> (OpenStreetMap) — see your IP and which area of the map you look at.</li>
              <li><strong className="text-white">Spot/shop geocoding</strong> — when you <em>create or edit</em> a spot or shop, its coordinates go to OpenStreetMap <strong className="text-white">Nominatim</strong> to fill in the city/country tag. When you open <strong className="text-white">Community Stats</strong>, the coordinates of pins that have no location tag go to <strong className="text-white">BigDataCloud</strong> so they can be grouped by region (cached on your device — at most once per pin). Both see your IP. These are the <em>pin you placed / public pin coordinates</em>, never your device's live GPS.</li>
              <li><strong className="text-white">Background notifications</strong> (opt-in) — if you enable them, a SkateSpots push server sees that your key received something and when (never who sent it or what it says — messages stay encrypted), and your OS push service (Google/Mozilla/Apple) delivers the alert.</li>
              <li><strong className="text-white">Bitcoin places</strong> (BTCMap, when you switch that layer on) — see your IP and the area you're viewing.</li>
              <li><strong className="text-white">Nostr relays</strong> — see your IP when the app reads or publishes.</li>
              <li><strong className="text-white">Cashu mints</strong> — see your IP whenever your wallet sends, receives or melts.</li>
              <li><strong className="text-white">Directions</strong> (OSRM, and Transitous for transit) — receive the start and end of any route you ask for, not only your IP. Routing stays <strong className="text-white">in the app</strong>: your start and destination are never handed off to Google or Apple Maps.</li>
              <li><strong className="text-white">Weather</strong> (Open-Meteo, opt-in) and <strong className="text-white">image uploads</strong> (Blossom), when you use them.</li>
              <li><strong className="text-white">Sasquatch AI</strong> — your message goes to our own server, then to the model provider.</li>
            </ul>
            <p>
              Because you send your public key (npub) on the same connection, a relay can link your IP
              to <em>you</em> — not just "someone connected", but "this person, from this address".
            </p>
            <p>
              One thing we do shield: the <strong className="text-white">mints directory</strong> is
              fetched through our server, so MintRadar never sees your IP.
            </p>
          </Section>

          {/* VPN / Tor */}
          <Section icon={Globe} color="#06b6d4" title="Want more privacy? VPN or Tor (optional)">
            <p>
              For most skaters this isn't necessary — but if you want to hide your IP and rough
              location from the servers above, you have two free options:
            </p>
            <div className="grid 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">🛡️ A reputable VPN</p>
                <p className="text-xs text-gray-500">
                  Hides your IP behind the VPN's servers. Easy and fast. Use one you pay for and trust;
                  free VPNs usually monetise your traffic, so treat "free" as a warning sign.
                </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">🧅 Tor Browser</p>
                <p className="text-xs text-gray-500">
                  Free, maximum IP privacy, routes through multiple relays. Slower — maps and some
                  Nostr relays may lag or block Tor exit nodes. Great for the extra-cautious.
                </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" /> Read this so you're not fooled
              </p>
              <Caveat>
                A VPN/Tor hides your <strong className="text-white">IP</strong> — not the spots you
                publish. A pin at your home is public whether or not you use a VPN.
              </Caveat>
              <Caveat>
                Don't enable <strong className="text-white">"Near Me" / browser GPS</strong> if your
                goal is to stay anonymous — precise GPS overrides any IP hiding.
              </Caveat>
              <Caveat>
                No tool makes you fully "anonymous." These reduce what servers can infer about your
                network location — that's it.
              </Caveat>
            </div>
          </Section>

          {/* Keys */}
          <Section icon={Key} color="#facc15" title="Your keys, your account">
            <p>
              Your account is a cryptographic key pair that you own. The safest way to log in is a{' '}
              <strong className="text-white">signer</strong> (Alby, nos2x, or Amber on Android) so
              your secret key never gets pasted into the app.
            </p>
            <Caveat>
              If you paste your <code className="text-[#ccff00] text-xs bg-white/5 px-1 py-0.5 rounded">nsec</code>{' '}
              directly, it's stored in your browser. Use a signer extension instead when you can, and
              keep your nsec backup somewhere safe offline.
            </Caveat>
          </Section>

          {/* Footer */}
          <div className="text-center pt-4 pb-2">
            <p className="text-xs text-gray-600">
              Questions? Ask{' '}
              <span className="text-[#ccff00]">The Sasquatch</span> in-app, or read the{' '}
              <Link to="/onboarding" className="text-[#ccff00]/80 hover:text-[#ccff00] underline">
                getting started guide
              </Link>
              {' '}·{' '}
              <Link to="/about" className="text-[#ccff00]/80 hover:text-[#ccff00] underline">
                About
              </Link>
            </p>
          </div>
        </div>
      </div>
    </>
  );
}