import React, { useState } from 'react';
import { HashRouter, Routes, Route, Link, Navigate } from 'react-router-dom';
import { Terminal, Flag, Trophy, Newspaper, Shield, Settings, LogOut, X } from 'lucide-react';
import { CTFProvider, useCTF } from './CTFContext';
import { ProtectedRoute, Button, Countdown } from './UIComponents';
import { Home } from './Home';
import { ChallengeList } from './Challenges';
import { Blog } from './Blog';
import { Scoreboard, ScoreMatrix } from './Scoreboard';
import { Admin } from './Admin';
import { Login, Register } from './Auth';

const ProfileSettingsModal: React.FC<{ onClose: () => void }> = ({ onClose }) => {
  const { updateProfile } = useCTF();
  const [password, setPassword] = useState('');
  const [confirm, setConfirm] = useState('');
  const [error, setError] = useState('');
  const [success, setSuccess] = useState(false);
  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    if (password !== confirm) return setError('PASSWORD_MISMATCH');
    try { await updateProfile(password); setSuccess(true); setTimeout(onClose, 2000); } catch (err: any) { setError('FAILED'); }
  };
  return (
    <div className="fixed inset-0 bg-black/95 z-[500] flex items-center justify-center p-4">
      <div className="hxp-border border-4 max-md w-full max-w-md bg-black p-8 relative">
        <button onClick={onClose} className="absolute top-4 right-4 text-white"><X size={24}/></button>
        <h3 className="text-3xl font-black italic text-white mb-8">IDENTITY_SETTINGS</h3>
        {success ? <div className="p-8 border-[#00ff00] text-[#00ff00] font-black text-center">UPDATED_SUCCESSFULLY</div> : (
          <form onSubmit={handleSubmit} className="space-y-6">
            <input type="password" placeholder="NEW KEY" className="w-full bg-black hxp-border-purple p-4 text-white font-black" value={password} onChange={e => setPassword(e.target.value)} required />
            <input type="password" placeholder="CONFIRM" className="w-full bg-black hxp-border-purple p-4 text-white font-black" value={confirm} onChange={e => setConfirm(e.target.value)} required />
            {error && <p className="text-red-500 font-black italic">{error}</p>}<Button type="submit" className="w-full py-4 text-xl">Confirm Update</Button>
          </form>
        )}
      </div>
    </div>
  );
};

const LayoutShell: React.FC = () => {
  const { state, currentUser, logout, loading, loadError } = useCTF();
  const [showProfileModal, setShowProfileModal] = useState(false);

  if (loading) return <div className="min-h-screen bg-black flex items-center justify-center text-[#ff0000] font-black italic text-4xl animate-pulse tracking-tighter uppercase">INITIALIZING_SESSION...</div>;

  const now = Date.now();
  const eventStartTime = parseInt(state.config.eventStartTime || "0");
  const eventEndTime = parseInt(state.config.eventEndTime || (Date.now() + 86400000).toString());
  const isEventLive = now >= eventStartTime && now <= eventEndTime && state.isStarted;

  const bgStyles: React.CSSProperties = { backgroundColor: state.config.bgType === 'color' ? (state.config.bgColor || '#000000') : '#000000' };

  return (
    <div style={bgStyles} className="min-h-screen text-white font-mono selection:bg-[#ff0000] selection:text-black relative overflow-x-hidden">
      {loadError && <div className="fixed top-0 left-0 right-0 bg-[#ff0000] text-black font-black text-center py-1 z-[999] text-[10px] italic">{loadError}</div>}
      {state.config.bgType === 'image' && state.config.bgImageData && (
        <div className="fixed inset-0 pointer-events-none z-0" style={{ 
          backgroundImage: `url(${state.config.bgImageData})`, 
          backgroundSize: 'cover', backgroundPosition: 'center', backgroundAttachment: 'fixed',
          opacity: parseFloat(state.config.bgOpacity || '0.5'), 
          filter: `brightness(${state.config.bgBrightness || '1.0'}) contrast(${state.config.bgContrast || '1.0'})` 
        }} />
      )}
      <nav className="border-b-4 border-[#333] px-6 py-4 flex justify-between items-center sticky top-0 bg-black/80 backdrop-blur-md z-[100]">
        <Link to="/" className="flex items-center gap-3 group">
          {state.config.logoData ? <img src={state.config.logoData} className="w-8 h-8 object-contain" /> : <Terminal className="text-[#ff0000]" />}
          <span className="text-2xl font-black italic uppercase group-hover:text-[#ff0000] transition-colors tracking-tighter">{state.config.conferenceName}</span>
        </Link>
        <div className="flex items-center gap-8">
          <div className="hidden md:flex gap-8 text-[10px] font-black uppercase tracking-widest">
            <Link to="/challenges" className="hover:text-[#bf00ff] flex items-center gap-2 transition-colors"><Flag size={14}/> Challenges</Link>
            <Link to="/blog" className="hover:text-[#bf00ff] flex items-center gap-2 transition-colors"><Newspaper size={14}/> Blog</Link>
            <Link to="/scoreboard" className="hover:text-[#bf00ff] flex items-center gap-2 transition-colors"><Trophy size={14}/> Scoreboard</Link>
            {currentUser?.isAdmin ? <Link to="/admin" className="text-[#ff0000] hover:text-white transition-colors flex items-center gap-2"><Shield size={14}/> Admin</Link> : null}
          </div>
          {isEventLive && (
            <div className="px-4 py-2 hxp-border-purple bg-[#bf00ff]/10 hidden sm:block">
              <Countdown target={eventEndTime} label="Time Left" />
            </div>
          )}
          <div className="flex items-center gap-4">
            {currentUser ? (
              <div className="flex items-center gap-3">
                <button onClick={() => setShowProfileModal(true)} title="Profile Settings" className="p-2 border-2 border-[#bf00ff] text-[#bf00ff] hover:bg-[#bf00ff] hover:text-black transition-all"><Settings size={18} /></button>
                <button onClick={logout} title="Sign Out" className="p-2 border-2 border-[#ff0000] text-[#ff0000] hover:bg-[#ff0000] hover:text-black transition-all"><LogOut size={18} /></button>
              </div>
            ) : <Link to="/login"><Button variant="secondary" className="text-[10px] py-1 px-4">SIGN_IN</Button></Link>}
          </div>
        </div>
      </nav>
      <main className="relative z-10">
        <Routes>
          <Route path="/" element={<Home />} />
          <Route path="/login" element={<Login />} />
          <Route path="/register" element={<Register />} />
          <Route path="/challenges" element={<ProtectedRoute><ChallengeList /></ProtectedRoute>} />
          <Route path="/blog" element={<Blog />} />
          <Route path="/scoreboard" element={<Scoreboard />} />
          <Route path="/matrix" element={<ScoreMatrix />} />
          <Route path="/admin" element={<ProtectedRoute>{currentUser?.isAdmin ? <Admin /> : <Navigate to="/" />}</ProtectedRoute>} />
          <Route path="*" element={<Navigate to="/" />} />
        </Routes>
      </main>
      {showProfileModal && <ProfileSettingsModal onClose={() => setShowProfileModal(false)} />}
    </div>
  );
};

const App: React.FC = () => {
  return (
    <CTFProvider>
      <HashRouter>
        <LayoutShell />
      </HashRouter>
    </CTFProvider>
  );
};

export default App;