'use client'

/**
 * Multiplayer Feature Wizard
 *
 * Interactive guide for learning about and testing
 * Breakpilot Drive multiplayer features (Matrix Chat & Jitsi Video)
 */

import { useState } from 'react'
import Link from 'next/link'
import AdminLayout from '@/components/admin/AdminLayout'

// ========================================
// Types
// ========================================

type WizardStep =
  | 'welcome'
  | 'game-modes'
  | 'matrix-chat'
  | 'jitsi-video'
  | 'go-services'
  | 'unity-integration'
  | 'demo'
  | 'summary'

interface StepInfo {
  id: WizardStep
  title: string
  description: string
}

// ========================================
// Step Configuration
// ========================================

const STEPS: StepInfo[] = [
  { id: 'welcome', title: 'Willkommen', description: 'Multiplayer-Uebersicht' },
  { id: 'game-modes', title: 'Spielmodi', description: 'Co-Op, Challenge, Klasse' },
  { id: 'matrix-chat', title: 'Matrix Chat', description: 'Echtzeit-Kommunikation' },
  { id: 'jitsi-video', title: 'Jitsi Video', description: 'Video-Konferenzen' },
  { id: 'go-services', title: 'Go Services', description: 'Backend-Integration' },
  { id: 'unity-integration', title: 'Unity', description: 'WebGL Bridge' },
  { id: 'demo', title: 'Demo', description: 'Live-Test' },
  { id: 'summary', title: 'Zusammenfassung', description: 'Naechste Schritte' },
]

// ========================================
// Educational Content
// ========================================

const EDUCATION_CONTENT: Record<WizardStep, { title: string; content: string; tips: string[] }> = {
  'welcome': {
    title: 'Multiplayer fuer Breakpilot Drive',
    content: `Das Multiplayer-System ermoeglicht kooperatives und kompetitives Spielen
    zwischen Schuelern. Es basiert auf zwei bewaehrten Open-Source-Technologien:

    - **Matrix Synapse** fuer Echtzeit-Chat
    - **Jitsi Meet** fuer Video-Kommunikation

    Diese Integration ermoeglicht verschiedene Spielmodi, von 1v1-Challenges
    bis hin zu klassenweiten Wettbewerben.`,
    tips: [
      'Matrix ist ein dezentrales Chat-Protokoll mit End-to-End-Verschluesselung',
      'Jitsi ist eine Open-Source-Alternative zu Zoom/Teams',
      'Beide Systeme sind DSGVO-konform und selbst-gehostet'
    ]
  },
  'game-modes': {
    title: 'Multiplayer-Spielmodi',
    content: `Breakpilot Drive unterstuetzt vier verschiedene Multiplayer-Modi:

    **Solo** - Einzelspieler ohne Netzwerk

    **Co-Op** - 2-4 Spieler arbeiten zusammen
    - Gemeinsame Strecke
    - Team-Chat
    - Optionales Video

    **Challenge** - 1v1 Wettbewerb
    - Gleiche Quiz-Fragen
    - Live-Punktestand
    - Video-Chat empfohlen

    **Klassenrennen** - Alle gegen alle
    - Lehrer als Moderator
    - Klassen-Chat
    - Live-Leaderboard`,
    tips: [
      'Co-Op ist ideal fuer Lerngruppen und Foerderunterricht',
      'Challenges motivieren durch direkten Wettbewerb',
      'Klassenrennen eignen sich als Abschluss einer Lerneinheit'
    ]
  },
  'matrix-chat': {
    title: 'Matrix Chat Integration',
    content: `Matrix wird fuer die Echtzeit-Kommunikation verwendet:

    **Raum-Typen:**
    - Team-Raeume (Co-Op, privat)
    - Challenge-Raeume (1v1, temporaer)
    - Klassen-Raeume (alle Schueler, Lehrer moderiert)

    **Features:**
    - Spieler-Beitritt/Austritt Benachrichtigungen
    - Score-Updates in Echtzeit
    - Achievement-Ankuendigungen
    - End-to-End-Verschluesselung optional

    **Game Events:**
    - player_joined, player_left
    - game_started, game_ended
    - score_update, quiz_answered
    - achievement, challenge_won`,
    tips: [
      'Matrix-Raeume werden automatisch erstellt und archiviert',
      'Power Levels kontrollieren wer schreiben darf',
      'Custom Events (breakpilot.game.*) fuer Spiellogik'
    ]
  },
  'jitsi-video': {
    title: 'Jitsi Video Integration',
    content: `Jitsi ermoeglicht Video-Kommunikation waehrend des Spiels:

    **Konfiguration pro Modus:**
    - Co-Op: Audio an, Video optional
    - Challenge: Audio/Video empfohlen
    - Klassenrennen: Lehrer-Video, Schueler stumm

    **Sicherheit:**
    - JWT-basierte Authentifizierung
    - Lobby fuer Klassenraeume
    - Kein Recording fuer Minderjaehrige

    **Unity-Embedding:**
    - Kompaktes Overlay (320x240px)
    - Minimale UI (nur Mikro, Kamera, Auflegen)
    - Automatisches Verbinden bei Spielstart`,
    tips: [
      'Jitsi-Container erscheint als Overlay im Spiel',
      'Audio hat Prioritaet - Video ist optional',
      'Lehrer koennen Schueler stummschalten'
    ]
  },
  'go-services': {
    title: 'Backend Go Services',
    content: `Die Multiplayer-Logik ist in Go implementiert:

    **Matrix Service** (game_rooms.go)
    - CreateGameTeamRoom() - Co-Op Raeume
    - CreateGameChallengeRoom() - 1v1 Raeume
    - CreateGameClassRaceRoom() - Klassen-Raeume
    - SendGameEvent() - Event Broadcasting

    **Jitsi Service** (game_meetings.go)
    - CreateCoopMeeting() - Team Video
    - CreateChallengeMeeting() - 1v1 Video
    - CreateClassRaceMeeting() - Klassen-Video
    - JWT-Token Generierung

    **Pfade:**
    - consent-service/internal/services/matrix/game_rooms.go
    - consent-service/internal/services/jitsi/game_meetings.go`,
    tips: [
      'Services erweitern bestehende Matrix/Jitsi Integration',
      'Validierung erfolgt vor Raum-Erstellung',
      'Cleanup wird automatisch bei Spielende ausgefuehrt'
    ]
  },
  'unity-integration': {
    title: 'Unity WebGL Integration',
    content: `Die Unity-seitige Integration besteht aus zwei Teilen:

    **MultiplayerManager.cs**
    - Singleton fuer Session-Verwaltung
    - Events fuer UI-Updates
    - Score/Achievement Broadcasting
    - Editor-Simulation fuer Entwicklung

    **MultiplayerPlugin.jslib**
    - JavaScript Bridge fuer WebGL
    - WebSocket-Verbindung zu Backend
    - Jitsi External API Integration
    - Automatisches Container-Management

    **Pfade:**
    - Assets/Scripts/Network/MultiplayerManager.cs
    - Assets/Plugins/WebGL/MultiplayerPlugin.jslib`,
    tips: [
      'Im Editor werden Multiplayer-Events simuliert',
      'jslib-Funktionen nur im WebGL Build verfuegbar',
      'Jitsi-Container wird dynamisch erstellt'
    ]
  },
  'demo': {
    title: 'Live-Demo',
    content: `Teste die Multiplayer-Komponenten:

    **Matrix-Verbindung:**
    - Pruefe ob Matrix Synapse erreichbar ist
    - Teste Raum-Erstellung
    - Sende Test-Nachricht

    **Jitsi-Verbindung:**
    - Pruefe ob Jitsi Meet erreichbar ist
    - Teste Meeting-Link Generierung
    - Pruefe JWT-Validierung

    **Hinweis:** Fuer vollstaendige Tests muss das
    Unity WebGL Build laufen und mit dem Backend verbunden sein.`,
    tips: [
      'Matrix laeuft auf Port 8008',
      'Jitsi laeuft auf Port 8443',
      'Beide Services muessen in Docker laufen'
    ]
  },
  'summary': {
    title: 'Zusammenfassung & Naechste Schritte',
    content: `Du hast gelernt:

    ✓ Vier Multiplayer-Modi (Solo, Co-Op, Challenge, Klasse)
    ✓ Matrix fuer Chat und Game Events
    ✓ Jitsi fuer Video-Kommunikation
    ✓ Go Backend Services
    ✓ Unity WebGL Integration

    **Naechste Schritte:**
    1. Backend-Services starten (docker-compose up)
    2. Unity WebGL Build erstellen
    3. Multiplayer im Admin Panel testen
    4. Phase 9: Mobile App Delivery`,
    tips: [
      'Dokumentation in docs/breakpilot-drive/multiplayer.md',
      'Tests in consent-service/*_test.go',
      'Unity Tests ueber Test Runner'
    ]
  },
}

// ========================================
// Components
// ========================================

function WizardStepper({ steps, currentStep, onStepClick }: {
  steps: StepInfo[]
  currentStep: WizardStep
  onStepClick: (step: WizardStep) => void
}) {
  const currentIndex = steps.findIndex(s => s.id === currentStep)

  return (
    <div className="flex items-center gap-1 overflow-x-auto pb-2">
      {steps.map((step, index) => {
        const isActive = step.id === currentStep
        const isCompleted = index < currentIndex
        const isClickable = index <= currentIndex + 1

        return (
          <button
            key={step.id}
            onClick={() => isClickable && onStepClick(step.id)}
            disabled={!isClickable}
            className={`flex items-center gap-2 px-3 py-2 rounded-lg text-sm font-medium transition-all whitespace-nowrap ${
              isActive
                ? 'bg-indigo-600 text-white'
                : isCompleted
                ? 'bg-indigo-100 text-indigo-700 hover:bg-indigo-200'
                : isClickable
                ? 'bg-gray-100 text-gray-600 hover:bg-gray-200'
                : 'bg-gray-50 text-gray-400 cursor-not-allowed'
            }`}
          >
            <span className={`w-6 h-6 rounded-full flex items-center justify-center text-xs ${
              isActive ? 'bg-white/20' : isCompleted ? 'bg-indigo-200' : 'bg-gray-200'
            }`}>
              {isCompleted ? '✓' : index + 1}
            </span>
            <span className="hidden md:inline">{step.title}</span>
          </button>
        )
      })}
    </div>
  )
}

function EducationCard({ title, content, tips }: { title: string; content: string; tips: string[] }) {
  return (
    <div className="bg-white rounded-xl shadow-lg p-6">
      <h2 className="text-xl font-bold text-gray-900 mb-4">{title}</h2>
      <div className="prose prose-sm max-w-none mb-6">
        {content.split('\n\n').map((paragraph, i) => (
          <p key={i} className="text-gray-700 whitespace-pre-line mb-3">
            {paragraph.split('**').map((part, j) =>
              j % 2 === 1 ? <strong key={j}>{part}</strong> : part
            )}
          </p>
        ))}
      </div>
      <div className="bg-indigo-50 rounded-lg p-4">
        <h3 className="text-sm font-semibold text-indigo-800 mb-2">Tipps:</h3>
        <ul className="space-y-1">
          {tips.map((tip, i) => (
            <li key={i} className="flex items-start gap-2 text-sm text-indigo-700">
              <span className="text-indigo-500 mt-0.5">•</span>
              {tip}
            </li>
          ))}
        </ul>
      </div>
    </div>
  )
}

function GameModeDemo() {
  const modes = [
    { name: 'Solo', icon: '🎮', players: '1', features: ['Einzelspieler', 'Offline moeglich', 'Eigenes Tempo'] },
    { name: 'Co-Op', icon: '🤝', players: '2-4', features: ['Team-Chat', 'Gemeinsame Strecke', 'Video optional'] },
    { name: 'Challenge', icon: '⚔️', players: '2', features: ['1v1 Wettbewerb', 'Live-Score', 'Video empfohlen'] },
    { name: 'Klassenrennen', icon: '🏁', players: '∞', features: ['Alle gegen alle', 'Lehrer-Moderation', 'Leaderboard'] },
  ]

  return (
    <div className="grid grid-cols-1 md:grid-cols-2 gap-4 mt-6">
      {modes.map((mode) => (
        <div key={mode.name} className="bg-gradient-to-br from-indigo-50 to-purple-50 rounded-lg p-4 border border-indigo-100">
          <div className="flex items-center gap-3 mb-3">
            <span className="text-3xl">{mode.icon}</span>
            <div>
              <h4 className="font-bold text-gray-900">{mode.name}</h4>
              <p className="text-sm text-gray-500">{mode.players} Spieler</p>
            </div>
          </div>
          <ul className="space-y-1">
            {mode.features.map((feature, i) => (
              <li key={i} className="text-sm text-gray-600 flex items-center gap-2">
                <span className="text-indigo-500">✓</span> {feature}
              </li>
            ))}
          </ul>
        </div>
      ))}
    </div>
  )
}

function ServiceStatusDemo() {
  const [matrixStatus, setMatrixStatus] = useState<'idle' | 'checking' | 'online' | 'offline'>('idle')
  const [jitsiStatus, setJitsiStatus] = useState<'idle' | 'checking' | 'online' | 'offline'>('idle')

  const checkMatrix = async () => {
    setMatrixStatus('checking')
    try {
      // In production, this would check the actual Matrix server
      await new Promise(resolve => setTimeout(resolve, 1000))
      setMatrixStatus('online') // Mock - assume online
    } catch {
      setMatrixStatus('offline')
    }
  }

  const checkJitsi = async () => {
    setJitsiStatus('checking')
    try {
      await new Promise(resolve => setTimeout(resolve, 1000))
      setJitsiStatus('online') // Mock
    } catch {
      setJitsiStatus('offline')
    }
  }

  return (
    <div className="mt-6 space-y-4">
      <h3 className="font-semibold text-gray-800">Service-Status pruefen:</h3>

      <div className="flex gap-4">
        <div className="flex-1 bg-white rounded-lg border border-gray-200 p-4">
          <div className="flex items-center justify-between mb-3">
            <div className="flex items-center gap-2">
              <span className="text-xl">💬</span>
              <span className="font-medium">Matrix Synapse</span>
            </div>
            <span className={`px-2 py-1 rounded text-xs font-medium ${
              matrixStatus === 'online' ? 'bg-green-100 text-green-700' :
              matrixStatus === 'offline' ? 'bg-red-100 text-red-700' :
              matrixStatus === 'checking' ? 'bg-yellow-100 text-yellow-700' :
              'bg-gray-100 text-gray-600'
            }`}>
              {matrixStatus === 'online' ? 'Online' :
               matrixStatus === 'offline' ? 'Offline' :
               matrixStatus === 'checking' ? 'Pruefe...' : 'Unbekannt'}
            </span>
          </div>
          <p className="text-sm text-gray-500 mb-3">Port 8008</p>
          <button
            onClick={checkMatrix}
            disabled={matrixStatus === 'checking'}
            className="w-full px-3 py-2 bg-indigo-600 text-white rounded-lg text-sm hover:bg-indigo-700 disabled:opacity-50"
          >
            Status pruefen
          </button>
        </div>

        <div className="flex-1 bg-white rounded-lg border border-gray-200 p-4">
          <div className="flex items-center justify-between mb-3">
            <div className="flex items-center gap-2">
              <span className="text-xl">📹</span>
              <span className="font-medium">Jitsi Meet</span>
            </div>
            <span className={`px-2 py-1 rounded text-xs font-medium ${
              jitsiStatus === 'online' ? 'bg-green-100 text-green-700' :
              jitsiStatus === 'offline' ? 'bg-red-100 text-red-700' :
              jitsiStatus === 'checking' ? 'bg-yellow-100 text-yellow-700' :
              'bg-gray-100 text-gray-600'
            }`}>
              {jitsiStatus === 'online' ? 'Online' :
               jitsiStatus === 'offline' ? 'Offline' :
               jitsiStatus === 'checking' ? 'Pruefe...' : 'Unbekannt'}
            </span>
          </div>
          <p className="text-sm text-gray-500 mb-3">Port 8443</p>
          <button
            onClick={checkJitsi}
            disabled={jitsiStatus === 'checking'}
            className="w-full px-3 py-2 bg-indigo-600 text-white rounded-lg text-sm hover:bg-indigo-700 disabled:opacity-50"
          >
            Status pruefen
          </button>
        </div>
      </div>
    </div>
  )
}

function CodePreview({ title, code, language }: { title: string; code: string; language: string }) {
  return (
    <div className="mt-6 bg-gray-900 rounded-lg overflow-hidden">
      <div className="flex items-center justify-between px-4 py-2 bg-gray-800">
        <span className="text-sm text-gray-400">{title}</span>
        <span className="text-xs px-2 py-1 bg-gray-700 text-gray-300 rounded">{language}</span>
      </div>
      <pre className="p-4 text-sm text-gray-300 overflow-x-auto">
        <code>{code}</code>
      </pre>
    </div>
  )
}

// ========================================
// Main Component
// ========================================

export default function MultiplayerWizardPage() {
  const [currentStep, setCurrentStep] = useState<WizardStep>('welcome')
  const currentStepIndex = STEPS.findIndex(s => s.id === currentStep)
  const education = EDUCATION_CONTENT[currentStep]

  const goToNext = () => {
    const nextIndex = currentStepIndex + 1
    if (nextIndex < STEPS.length) {
      setCurrentStep(STEPS[nextIndex].id)
    }
  }

  const goToPrevious = () => {
    const prevIndex = currentStepIndex - 1
    if (prevIndex >= 0) {
      setCurrentStep(STEPS[prevIndex].id)
    }
  }

  return (
    <AdminLayout
      title="Multiplayer Wizard"
      description="Lerne die Multiplayer-Features von Breakpilot Drive kennen"
    >
      {/* Back Link */}
      <div className="mb-6">
        <Link
          href="/admin/game"
          className="inline-flex items-center gap-2 text-gray-600 hover:text-gray-900"
        >
          <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 19l-7-7 7-7" />
          </svg>
          Zurueck zum Game Dashboard
        </Link>
      </div>

      {/* Stepper */}
      <div className="mb-8">
        <WizardStepper
          steps={STEPS}
          currentStep={currentStep}
          onStepClick={setCurrentStep}
        />
      </div>

      {/* Content */}
      <div className="grid grid-cols-1 lg:grid-cols-3 gap-6">
        {/* Main Content */}
        <div className="lg:col-span-2">
          <EducationCard
            title={education.title}
            content={education.content}
            tips={education.tips}
          />

          {/* Step-specific content */}
          {currentStep === 'game-modes' && <GameModeDemo />}

          {currentStep === 'demo' && <ServiceStatusDemo />}

          {currentStep === 'matrix-chat' && (
            <CodePreview
              title="game_rooms.go - Raum erstellen"
              language="Go"
              code={`func (s *MatrixService) CreateGameTeamRoom(
    ctx context.Context,
    config GameRoomConfig,
) (*CreateRoomResponse, error) {
    roomName := fmt.Sprintf("Breakpilot Drive - Team %s",
        config.SessionID[:8])

    req := CreateRoomRequest{
        Name:       roomName,
        Visibility: "private",
        Preset:     "private_chat",
        // ... power levels, encryption
    }

    return s.CreateRoom(ctx, req)
}`}
            />
          )}

          {currentStep === 'jitsi-video' && (
            <CodePreview
              title="game_meetings.go - Meeting erstellen"
              language="Go"
              code={`func (s *JitsiService) CreateChallengeMeeting(
    ctx context.Context,
    config GameMeetingConfig,
    challengerName string,
    opponentName string,
) (*GameMeetingLink, error) {
    meeting := Meeting{
        RoomName: fmt.Sprintf("bp-challenge-%s",
            config.SessionID[:8]),
        Subject: fmt.Sprintf("Challenge: %s vs %s",
            challengerName, opponentName),
        Config: &MeetingConfig{
            StartWithAudioMuted: false,
            RequireDisplayName:  true,
        },
    }

    return s.CreateMeetingLink(ctx, meeting)
}`}
            />
          )}

          {currentStep === 'unity-integration' && (
            <CodePreview
              title="MultiplayerManager.cs - Session erstellen"
              language="C#"
              code={`public void CreateSession(
    GameMode mode,
    string displayName,
    Action<MultiplayerSession> onSuccess,
    Action<string> onError
) {
    localPlayer = new Player {
        id = Guid.NewGuid().ToString(),
        displayName = displayName,
        isHost = true,
        isReady = false
    };

    state = MultiplayerState.Connecting;
    StartCoroutine(CreateSessionCoroutine(
        mode, onSuccess, onError));
}`}
            />
          )}

          {/* Navigation */}
          <div className="flex justify-between mt-8">
            <button
              onClick={goToPrevious}
              disabled={currentStepIndex === 0}
              className="px-6 py-3 rounded-lg font-medium bg-gray-100 text-gray-700 hover:bg-gray-200 disabled:opacity-50 disabled:cursor-not-allowed"
            >
              Zurueck
            </button>
            <button
              onClick={goToNext}
              disabled={currentStepIndex === STEPS.length - 1}
              className="px-6 py-3 rounded-lg font-medium bg-indigo-600 text-white hover:bg-indigo-700 disabled:opacity-50 disabled:cursor-not-allowed"
            >
              {currentStepIndex === STEPS.length - 1 ? 'Fertig' : 'Weiter'}
            </button>
          </div>
        </div>

        {/* Sidebar */}
        <div className="space-y-6">
          {/* Progress */}
          <div className="bg-white rounded-xl shadow p-6">
            <h3 className="font-semibold text-gray-900 mb-4">Fortschritt</h3>
            <div className="relative pt-1">
              <div className="flex mb-2 items-center justify-between">
                <span className="text-xs font-semibold text-indigo-600">
                  Schritt {currentStepIndex + 1} von {STEPS.length}
                </span>
                <span className="text-xs font-semibold text-indigo-600">
                  {Math.round(((currentStepIndex + 1) / STEPS.length) * 100)}%
                </span>
              </div>
              <div className="overflow-hidden h-2 mb-4 text-xs flex rounded bg-indigo-100">
                <div
                  style={{ width: `${((currentStepIndex + 1) / STEPS.length) * 100}%` }}
                  className="shadow-none flex flex-col text-center whitespace-nowrap text-white justify-center bg-indigo-600 transition-all duration-300"
                />
              </div>
            </div>
          </div>

          {/* Architecture Overview */}
          <div className="bg-gradient-to-br from-indigo-500 to-purple-600 rounded-xl shadow p-6 text-white">
            <h3 className="font-semibold mb-4">Architektur</h3>
            <div className="text-sm space-y-2 font-mono">
              <div className="bg-white/10 rounded px-2 py-1">Unity WebGL</div>
              <div className="text-center text-indigo-200">↓ JS Bridge</div>
              <div className="bg-white/10 rounded px-2 py-1">Matrix + Jitsi</div>
              <div className="text-center text-indigo-200">↓ WebSocket/API</div>
              <div className="bg-white/10 rounded px-2 py-1">Go Backend</div>
            </div>
          </div>

          {/* Quick Links */}
          <div className="bg-white rounded-xl shadow p-6">
            <h3 className="font-semibold text-gray-900 mb-4">Wichtige Dateien</h3>
            <ul className="space-y-2 text-sm">
              <li className="text-gray-600">
                <span className="text-indigo-600">Go:</span> consent-service/.../matrix/game_rooms.go
              </li>
              <li className="text-gray-600">
                <span className="text-indigo-600">Go:</span> consent-service/.../jitsi/game_meetings.go
              </li>
              <li className="text-gray-600">
                <span className="text-indigo-600">C#:</span> Assets/Scripts/Network/MultiplayerManager.cs
              </li>
              <li className="text-gray-600">
                <span className="text-indigo-600">JS:</span> Assets/Plugins/WebGL/MultiplayerPlugin.jslib
              </li>
            </ul>
          </div>
        </div>
      </div>
    </AdminLayout>
  )
}