import { useEffect, useState } from 'react'
import { LayoutDashboard, BookOpen, FileText, Settings as SettingsIcon } from 'lucide-react'
import Dashboard from './pages/Dashboard'
import SettingsPage from './pages/Settings'
import LogsPage from './pages/Logs'
import AnleitungPage from './pages/Anleitung'
import FirstRunWizard from './components/FirstRunWizard'
import { api } from './lib/api'

type Page = 'dashboard' | 'anleitung' | 'logs' | 'settings'

export default function App() {
  const [currentPage, setCurrentPage] = useState<Page>('dashboard')
  // First-Run: solange der Einrichtungs-Assistent nicht abgeschlossen ist, zeigen wir
  // ihn statt des Dashboards. null = /setup noch nicht geprüft (kein Aufblitzen).
  const [setupDone, setSetupDone] = useState<boolean | null>(null)

  useEffect(() => {
    api.get('/setup')
      .then((r) => setSetupDone(Boolean(r.data?.done)))
      .catch(() => setSetupDone(true)) // API/Setup nicht erreichbar → nicht blockieren
  }, [])

  const navItems: { id: Page; label: string; icon: any }[] = [
    { id: 'dashboard', label: 'Dashboard', icon: LayoutDashboard },
    { id: 'anleitung', label: 'Anleitung', icon: BookOpen },
    { id: 'logs', label: 'Logs', icon: FileText },
    { id: 'settings', label: 'Einstellungen', icon: SettingsIcon },
  ]

  if (setupDone === null) return null // kurzer Moment, bis /setup geantwortet hat
  if (!setupDone) return <FirstRunWizard onDone={() => setSetupDone(true)} />

  return (
    <div className="min-h-screen bg-[#080b11] text-slate-100 font-sans selection:bg-amber-500/30 selection:text-amber-300">
      {/* Top Header Navigation Bar */}
      <header className="sticky top-0 z-50 bg-[#0c101d]/95 backdrop-blur-2xl border-b border-amber-500/20 shadow-xl shadow-black/50">
        <div className="max-w-[1400px] mx-auto px-4 sm:px-6 lg:px-8 h-16 flex items-center justify-between gap-4">
          
          {/* Logo */}
          <div className="flex items-center gap-3 cursor-pointer" onClick={() => setCurrentPage('dashboard')}>
            <span className="text-2xl font-black tracking-wider bg-gradient-to-r from-amber-400 via-amber-300 to-amber-500 bg-clip-text text-transparent drop-shadow-[0_0_12px_rgba(245,158,11,0.4)] font-mono">
              RIPPY
            </span>
            <span className="px-2.5 py-0.5 rounded text-[10px] font-bold uppercase tracking-widest bg-amber-500/15 text-amber-400 border border-amber-500/30">
              CINEMA OS
            </span>
          </div>

          {/* Central Nav Tabs */}
          <nav className="flex items-center gap-1.5 bg-[#121827] p-1.5 rounded-2xl border border-slate-800 shadow-inner">
            {navItems.map((item) => {
              const Icon = item.icon
              const isActive = currentPage === item.id
              return (
                <button
                  key={item.id}
                  onClick={() => setCurrentPage(item.id)}
                  className={`flex items-center gap-2 px-4 py-2 rounded-xl text-xs font-semibold transition-all duration-200 ${
                    isActive
                      ? 'bg-amber-500 text-slate-950 shadow-md shadow-amber-500/20 font-bold scale-[1.02]'
                      : 'text-slate-400 hover:text-slate-100 hover:bg-slate-800/60'
                  }`}
                >
                  <Icon size={15} className={isActive ? 'text-slate-950' : 'text-slate-400'} />
                  <span>{item.label}</span>
                </button>
              )
            })}
          </nav>

          <div className="flex items-center gap-2 text-xs font-mono text-emerald-400 bg-emerald-500/10 px-3 py-1.5 rounded-xl border border-emerald-500/20">
            <span className="w-2 h-2 rounded-full bg-emerald-400 animate-pulse" />
            <span>ONLINE</span>
          </div>
        </div>
      </header>

      {/* Main Content Viewport */}
      <main className="max-w-[1400px] mx-auto px-4 sm:px-6 lg:px-8 py-8">
        {currentPage === 'dashboard' && <Dashboard />}
        {currentPage === 'anleitung' && <AnleitungPage />}
        {currentPage === 'logs' && <LogsPage />}
        {currentPage === 'settings' && <SettingsPage />}
      </main>
    </div>
  )
}