'use client'

/**
 * Mac Mini Control Admin Page
 *
 * Headless Mac Mini Server Management
 * - Power Controls (Wake-on-LAN, Restart, Shutdown)
 * - Docker Container Management
 * - Ollama LLM Model Management
 * - System Status Monitoring
 */

import AdminLayout from '@/components/admin/AdminLayout'
import { useEffect, useState, useCallback, useRef } from 'react'

interface MacMiniStatus {
  online: boolean
  ping: boolean
  ssh: boolean
  docker: boolean
  ollama: boolean
  internet: boolean  // Neuer Status: Hat Mac Mini Internet-Zugang?
  ip: string
  uptime?: string
  cpu_load?: string
  memory?: string
  containers?: ContainerInfo[]
  models?: ModelInfo[]
  error?: string
}

// Aktionen die Internet benötigen
const INTERNET_REQUIRED_ACTIONS = [
  { action: 'LLM Modelle herunterladen', description: 'Ollama pull benötigt Verbindung zu ollama.com' },
  { action: 'Docker Base Images pullen', description: 'Neue Images von Docker Hub/GHCR' },
  { action: 'npm/pip/go Packages', description: 'Beim ersten Build oder neuen Dependencies' },
  { action: 'Git Pull/Push', description: 'Code-Synchronisation mit Remote-Repository' },
]

interface ContainerInfo {
  name: string
  status: string
  ports?: string
}

interface ModelInfo {
  name: string
  size: string
  modified: string
}

interface DownloadProgress {
  model: string
  status: string
  completed: number
  total: number
  percent: number
}

// Modell-Informationen für Beschreibungen und Empfehlungen
interface ModelDescription {
  name: string
  category: 'vision' | 'text' | 'code' | 'embedding'
  size: string
  description: string
  useCases: string[]
  recommended?: boolean
}

const MODEL_DATABASE: Record<string, ModelDescription> = {
  // Vision-Modelle (Handschrifterkennung)
  'llama3.2-vision:11b': {
    name: 'Llama 3.2 Vision 11B',
    category: 'vision',
    size: '7.8 GB',
    description: 'Metas multimodales Vision-Modell. Kann Bilder und PDFs analysieren, Text aus Handschrift extrahieren.',
    useCases: ['Handschrifterkennung', 'Bild-Analyse', 'Dokumentenverarbeitung', 'OCR-Aufgaben'],
    recommended: true
  },
  'llama3.2-vision:90b': {
    name: 'Llama 3.2 Vision 90B',
    category: 'vision',
    size: '55 GB',
    description: 'Größte Version von Llama Vision. Beste Qualität für komplexe Bildanalyse.',
    useCases: ['Komplexe Handschrift', 'Detaillierte Bild-Analyse', 'Mathematische Formeln'],
  },
  'minicpm-v': {
    name: 'MiniCPM-V',
    category: 'vision',
    size: '5.5 GB',
    description: 'Kompaktes Vision-Modell mit gutem Preis-Leistungs-Verhältnis für OCR.',
    useCases: ['Schnelle OCR', 'Einfache Handschrift', 'Tabellen-Erkennung'],
    recommended: true
  },
  'llava:13b': {
    name: 'LLaVA 13B',
    category: 'vision',
    size: '8 GB',
    description: 'Large Language-and-Vision Assistant. Gut für Bild-zu-Text Aufgaben.',
    useCases: ['Bildbeschreibung', 'Handschrift', 'Diagramm-Analyse'],
  },
  'llava:34b': {
    name: 'LLaVA 34B',
    category: 'vision',
    size: '20 GB',
    description: 'Größere LLaVA-Version mit besserer Genauigkeit.',
    useCases: ['Komplexe Dokumente', 'Wissenschaftliche Notation', 'Detailanalyse'],
  },
  'bakllava': {
    name: 'BakLLaVA',
    category: 'vision',
    size: '4.7 GB',
    description: 'Verbesserte LLaVA-Variante mit Mistral-Basis.',
    useCases: ['Schnelle Bildanalyse', 'Handschrift', 'Formular-Verarbeitung'],
  },

  // Text-Modelle (Klausurkorrektur)
  'qwen2.5:14b': {
    name: 'Qwen 2.5 14B',
    category: 'text',
    size: '9 GB',
    description: 'Alibabas neuestes Sprachmodell. Exzellent für deutsche Texte und Bewertungsaufgaben.',
    useCases: ['Klausurkorrektur', 'Aufsatzbewertung', 'Feedback-Generierung', 'Grammatikprüfung'],
    recommended: true
  },
  'qwen2.5:7b': {
    name: 'Qwen 2.5 7B',
    category: 'text',
    size: '4.7 GB',
    description: 'Kleinere Qwen-Version, schneller bei ähnlicher Qualität.',
    useCases: ['Schnelle Korrektur', 'Einfache Bewertungen', 'Rechtschreibprüfung'],
  },
  'qwen2.5:32b': {
    name: 'Qwen 2.5 32B',
    category: 'text',
    size: '19 GB',
    description: 'Große Qwen-Version für komplexe Bewertungsaufgaben.',
    useCases: ['Detaillierte Analyse', 'Abitur-Klausuren', 'Komplexe Argumentation'],
  },
  'llama3.1:8b': {
    name: 'Llama 3.1 8B',
    category: 'text',
    size: '4.7 GB',
    description: 'Metas schnelles Textmodell. Gute Balance aus Geschwindigkeit und Qualität.',
    useCases: ['Allgemeine Korrektur', 'Schnelles Feedback', 'Zusammenfassungen'],
  },
  'llama3.1:70b': {
    name: 'Llama 3.1 70B',
    category: 'text',
    size: '40 GB',
    description: 'Großes Llama-Modell für anspruchsvolle Aufgaben.',
    useCases: ['Komplexe Klausuren', 'Tiefgehende Analyse', 'Wissenschaftliche Texte'],
  },
  'mistral': {
    name: 'Mistral 7B',
    category: 'text',
    size: '4.1 GB',
    description: 'Effizientes europäisches Modell mit guter deutscher Sprachunterstützung.',
    useCases: ['Deutsche Texte', 'Schnelle Verarbeitung', 'Allgemeine Korrektur'],
  },
  'mixtral:8x7b': {
    name: 'Mixtral 8x7B',
    category: 'text',
    size: '26 GB',
    description: 'Mixture-of-Experts Modell. Kombiniert Geschwindigkeit mit hoher Qualität.',
    useCases: ['Komplexe Korrektur', 'Multi-Aspekt-Bewertung', 'Wissenschaftliche Arbeiten'],
  },
  'gemma2:9b': {
    name: 'Gemma 2 9B',
    category: 'text',
    size: '5.5 GB',
    description: 'Googles kompaktes Modell. Gut für Instruktionen und Bewertungen.',
    useCases: ['Strukturierte Bewertung', 'Feedback', 'Zusammenfassungen'],
  },
  'phi3': {
    name: 'Phi-3',
    category: 'text',
    size: '2.3 GB',
    description: 'Microsofts kleines aber leistungsfähiges Modell.',
    useCases: ['Schnelle Checks', 'Einfache Korrektur', 'Ressourcenschonend'],
  },
}

// Empfohlene Modelle für spezifische Anwendungsfälle
const RECOMMENDED_MODELS = {
  handwriting: [
    { model: 'llama3.2-vision:11b', reason: 'Beste Balance aus Qualität und Geschwindigkeit für Handschrift' },
    { model: 'minicpm-v', reason: 'Schnell und ressourcenschonend für einfache Handschrift' },
    { model: 'llava:13b', reason: 'Gute Alternative mit bewährter Vision-Architektur' },
  ],
  grading: [
    { model: 'qwen2.5:14b', reason: 'Beste Qualität für deutsche Klausurkorrektur' },
    { model: 'llama3.1:8b', reason: 'Schnell für einfache Bewertungen' },
    { model: 'mistral', reason: 'Europäisches Modell mit guter Sprachqualität' },
  ]
}

export default function MacMiniControlPage() {
  const [status, setStatus] = useState<MacMiniStatus | null>(null)
  const [loading, setLoading] = useState(true)
  const [actionLoading, setActionLoading] = useState<string | null>(null)
  const [error, setError] = useState<string | null>(null)
  const [message, setMessage] = useState<string | null>(null)
  const [downloadProgress, setDownloadProgress] = useState<DownloadProgress | null>(null)
  const [modelInput, setModelInput] = useState('')
  const [selectedModel, setSelectedModel] = useState<string | null>(null)
  const [showRecommendations, setShowRecommendations] = useState(false)
  const eventSourceRef = useRef<EventSource | null>(null)

  // Get model info from database
  const getModelInfo = (modelName: string): ModelDescription | null => {
    // Try exact match first
    if (MODEL_DATABASE[modelName]) return MODEL_DATABASE[modelName]
    // Try base name (without tag)
    const baseName = modelName.split(':')[0]
    const matchingKey = Object.keys(MODEL_DATABASE).find(key =>
      key.startsWith(baseName) || key === baseName
    )
    return matchingKey ? MODEL_DATABASE[matchingKey] : null
  }

  // Check if model is installed
  const isModelInstalled = (modelName: string): boolean => {
    if (!status?.models) return false
    return status.models.some(m =>
      m.name === modelName || m.name.startsWith(modelName.split(':')[0])
    )
  }

  // API Endpoint (Mac Mini Backend or local proxy)
  const API_BASE = 'http://192.168.178.100:8000/api/mac-mini'

  // Fetch status
  const fetchStatus = useCallback(async () => {
    setLoading(true)
    setError(null)

    try {
      const response = await fetch(`${API_BASE}/status`)
      const data = await response.json()

      if (!response.ok) {
        throw new Error(data.detail || `HTTP ${response.status}`)
      }

      setStatus(data)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Verbindungsfehler')
      setStatus({
        online: false,
        ping: false,
        ssh: false,
        docker: false,
        ollama: false,
        internet: false,
        ip: '192.168.178.100',
        error: 'Verbindung fehlgeschlagen'
      })
    } finally {
      setLoading(false)
    }
  }, [])

  // Initial load
  useEffect(() => {
    fetchStatus()
  }, [fetchStatus])

  // Auto-refresh every 30 seconds
  useEffect(() => {
    const interval = setInterval(fetchStatus, 30000)
    return () => clearInterval(interval)
  }, [fetchStatus])

  // Wake on LAN
  const wakeOnLan = async () => {
    setActionLoading('wake')
    setError(null)
    setMessage(null)

    try {
      const response = await fetch(`${API_BASE}/wake`, { method: 'POST' })
      const data = await response.json()

      if (!response.ok) {
        throw new Error(data.detail || 'Wake-on-LAN fehlgeschlagen')
      }

      setMessage('Wake-on-LAN Paket gesendet')
      setTimeout(fetchStatus, 5000)
      setTimeout(fetchStatus, 15000)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Fehler beim Aufwecken')
    } finally {
      setActionLoading(null)
    }
  }

  // Restart
  const restart = async () => {
    if (!confirm('Mac Mini wirklich neu starten?')) return

    setActionLoading('restart')
    setError(null)
    setMessage(null)

    try {
      const response = await fetch(`${API_BASE}/restart`, { method: 'POST' })
      const data = await response.json()

      if (!response.ok) {
        throw new Error(data.detail || 'Neustart fehlgeschlagen')
      }

      setMessage('Neustart eingeleitet')
      setTimeout(fetchStatus, 30000)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Fehler beim Neustart')
    } finally {
      setActionLoading(null)
    }
  }

  // Shutdown
  const shutdown = async () => {
    if (!confirm('Mac Mini wirklich herunterfahren?')) return

    setActionLoading('shutdown')
    setError(null)
    setMessage(null)

    try {
      const response = await fetch(`${API_BASE}/shutdown`, { method: 'POST' })
      const data = await response.json()

      if (!response.ok) {
        throw new Error(data.detail || 'Shutdown fehlgeschlagen')
      }

      setMessage('Shutdown eingeleitet')
      setTimeout(fetchStatus, 10000)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Fehler beim Herunterfahren')
    } finally {
      setActionLoading(null)
    }
  }

  // Docker Up
  const dockerUp = async () => {
    setActionLoading('docker-up')
    setError(null)
    setMessage(null)

    try {
      const response = await fetch(`${API_BASE}/docker/up`, { method: 'POST' })
      const data = await response.json()

      if (!response.ok) {
        throw new Error(data.detail || 'Docker Start fehlgeschlagen')
      }

      setMessage('Docker Container werden gestartet...')
      setTimeout(fetchStatus, 5000)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Fehler beim Docker Start')
    } finally {
      setActionLoading(null)
    }
  }

  // Docker Down
  const dockerDown = async () => {
    if (!confirm('Docker Container wirklich stoppen?')) return

    setActionLoading('docker-down')
    setError(null)
    setMessage(null)

    try {
      const response = await fetch(`${API_BASE}/docker/down`, { method: 'POST' })
      const data = await response.json()

      if (!response.ok) {
        throw new Error(data.detail || 'Docker Stop fehlgeschlagen')
      }

      setMessage('Docker Container werden gestoppt...')
      setTimeout(fetchStatus, 5000)
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Fehler beim Docker Stop')
    } finally {
      setActionLoading(null)
    }
  }

  // Pull Model with SSE Progress
  const pullModel = async () => {
    if (!modelInput.trim()) return

    setActionLoading('pull')
    setError(null)
    setMessage(null)
    setDownloadProgress({
      model: modelInput,
      status: 'starting',
      completed: 0,
      total: 0,
      percent: 0
    })

    try {
      // Close any existing EventSource
      if (eventSourceRef.current) {
        eventSourceRef.current.close()
      }

      // Use fetch with streaming for progress
      const response = await fetch(`${API_BASE}/ollama/pull`, {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ model: modelInput })
      })

      if (!response.ok) {
        const data = await response.json()
        throw new Error(data.detail || 'Model Pull fehlgeschlagen')
      }

      const reader = response.body?.getReader()
      const decoder = new TextDecoder()

      if (reader) {
        while (true) {
          const { done, value } = await reader.read()
          if (done) break

          const text = decoder.decode(value)
          const lines = text.split('\n').filter(line => line.trim())

          for (const line of lines) {
            try {
              const data = JSON.parse(line)
              if (data.status === 'downloading' && data.total) {
                setDownloadProgress({
                  model: modelInput,
                  status: data.status,
                  completed: data.completed || 0,
                  total: data.total,
                  percent: Math.round((data.completed || 0) / data.total * 100)
                })
              } else if (data.status === 'success') {
                setMessage(`Modell ${modelInput} erfolgreich heruntergeladen`)
                setDownloadProgress(null)
                setModelInput('')
                fetchStatus()
              } else if (data.error) {
                throw new Error(data.error)
              }
            } catch (e) {
              // Skip parsing errors for incomplete chunks
            }
          }
        }
      }
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Fehler beim Model Download')
      setDownloadProgress(null)
    } finally {
      setActionLoading(null)
    }
  }

  // Format bytes
  const formatBytes = (bytes: number) => {
    if (bytes === 0) return '0 B'
    const k = 1024
    const sizes = ['B', 'KB', 'MB', 'GB', 'TB']
    const i = Math.floor(Math.log(bytes) / Math.log(k))
    return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i]
  }

  // Status badge styling
  const getStatusBadge = (online: boolean) => {
    return online
      ? 'px-3 py-1 rounded-full text-sm font-semibold bg-green-100 text-green-800'
      : 'px-3 py-1 rounded-full text-sm font-semibold bg-red-100 text-red-800'
  }

  const getServiceStatus = (ok: boolean) => {
    return ok
      ? 'flex items-center gap-2 text-green-600'
      : 'flex items-center gap-2 text-red-500'
  }

  return (
    <AdminLayout title="Mac Mini Control" description="Headless Server Management">
      {/* Power Controls */}
      <div className="bg-white rounded-xl border border-slate-200 p-6 mb-6">
        <div className="flex items-center justify-between mb-6">
          <div className="flex items-center gap-4">
            <div className="text-4xl">🖥️</div>
            <div>
              <h2 className="text-xl font-bold text-slate-900">Mac Mini Headless</h2>
              <p className="text-slate-500 text-sm">IP: {status?.ip || '192.168.178.100'}</p>
            </div>
          </div>
          <span className={getStatusBadge(status?.online || false)}>
            {loading ? 'Laden...' : status?.online ? 'Online' : 'Offline'}
          </span>
        </div>

        {/* Power Buttons */}
        <div className="flex items-center gap-4 mb-6">
          <button
            onClick={wakeOnLan}
            disabled={actionLoading !== null}
            className="px-4 py-2 bg-green-600 text-white rounded-lg font-medium hover:bg-green-700 disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
          >
            {actionLoading === 'wake' ? '...' : '⚡ Wake on LAN'}
          </button>
          <button
            onClick={restart}
            disabled={actionLoading !== null || !status?.online}
            className="px-4 py-2 bg-yellow-600 text-white rounded-lg font-medium hover:bg-yellow-700 disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
          >
            {actionLoading === 'restart' ? '...' : '🔄 Neustart'}
          </button>
          <button
            onClick={shutdown}
            disabled={actionLoading !== null || !status?.online}
            className="px-4 py-2 bg-red-600 text-white rounded-lg font-medium hover:bg-red-700 disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
          >
            {actionLoading === 'shutdown' ? '...' : '⏻ Herunterfahren'}
          </button>
          <button
            onClick={fetchStatus}
            disabled={loading}
            className="px-4 py-2 border border-slate-300 text-slate-700 rounded-lg font-medium hover:bg-slate-50 disabled:opacity-50 transition-colors"
          >
            {loading ? '...' : '🔍 Status aktualisieren'}
          </button>

          {message && <span className="ml-4 text-sm text-green-600 font-medium">{message}</span>}
          {error && <span className="ml-4 text-sm text-red-600 font-medium">{error}</span>}
        </div>

        {/* Service Status Grid */}
        <div className="grid grid-cols-2 md:grid-cols-5 gap-4">
          <div className="bg-slate-50 rounded-lg p-4">
            <div className="text-sm text-slate-500 mb-1">Ping</div>
            <div className={getServiceStatus(status?.ping || false)}>
              <span className={`w-2 h-2 rounded-full ${status?.ping ? 'bg-green-500' : 'bg-red-500'}`}></span>
              {status?.ping ? 'Erreichbar' : 'Nicht erreichbar'}
            </div>
          </div>
          <div className="bg-slate-50 rounded-lg p-4">
            <div className="text-sm text-slate-500 mb-1">SSH</div>
            <div className={getServiceStatus(status?.ssh || false)}>
              <span className={`w-2 h-2 rounded-full ${status?.ssh ? 'bg-green-500' : 'bg-red-500'}`}></span>
              {status?.ssh ? 'Verbunden' : 'Getrennt'}
            </div>
          </div>
          <div className="bg-slate-50 rounded-lg p-4">
            <div className="text-sm text-slate-500 mb-1">Docker</div>
            <div className={getServiceStatus(status?.docker || false)}>
              <span className={`w-2 h-2 rounded-full ${status?.docker ? 'bg-green-500' : 'bg-red-500'}`}></span>
              {status?.docker ? 'Aktiv' : 'Inaktiv'}
            </div>
          </div>
          <div className="bg-slate-50 rounded-lg p-4">
            <div className="text-sm text-slate-500 mb-1">Ollama</div>
            <div className={getServiceStatus(status?.ollama || false)}>
              <span className={`w-2 h-2 rounded-full ${status?.ollama ? 'bg-green-500' : 'bg-red-500'}`}></span>
              {status?.ollama ? 'Bereit' : 'Nicht bereit'}
            </div>
          </div>
          <div className="bg-slate-50 rounded-lg p-4">
            <div className="text-sm text-slate-500 mb-1">Uptime</div>
            <div className="font-semibold text-slate-700">
              {status?.uptime || '-'}
            </div>
          </div>
        </div>
      </div>

      {/* Internet Status Banner */}
      <div className={`rounded-xl border p-4 mb-6 ${
        status?.internet
          ? 'bg-green-50 border-green-200'
          : 'bg-amber-50 border-amber-200'
      }`}>
        <div className="flex items-start justify-between">
          <div className="flex gap-3">
            <span className="text-2xl">{status?.internet ? '🌐' : '📴'}</span>
            <div>
              <h3 className={`font-semibold ${status?.internet ? 'text-green-900' : 'text-amber-900'}`}>
                Internet: {status?.internet ? 'Verbunden' : 'Offline (Normalbetrieb)'}
              </h3>
              <p className={`text-sm mt-1 ${status?.internet ? 'text-green-700' : 'text-amber-700'}`}>
                {status?.internet
                  ? 'Mac Mini hat Internet-Zugang. LLM-Downloads und Updates möglich.'
                  : 'Mac Mini arbeitet offline. Für bestimmte Aktionen muss Internet aktiviert werden.'}
              </p>
            </div>
          </div>
          <span className={`px-3 py-1 rounded-full text-sm font-semibold ${
            status?.internet
              ? 'bg-green-100 text-green-800'
              : 'bg-amber-100 text-amber-800'
          }`}>
            {status?.internet ? 'Online' : 'Offline'}
          </span>
        </div>

        {/* Internet Required Actions - nur anzeigen wenn offline */}
        {!status?.internet && (
          <div className="mt-4 pt-4 border-t border-amber-200">
            <h4 className="font-medium text-amber-900 mb-2">⚠️ Diese Aktionen benötigen Internet:</h4>
            <div className="grid grid-cols-1 md:grid-cols-2 gap-2">
              {INTERNET_REQUIRED_ACTIONS.map((item, idx) => (
                <div key={idx} className="flex items-start gap-2 text-sm">
                  <span className="text-amber-600 mt-0.5">•</span>
                  <div>
                    <span className="font-medium text-amber-800">{item.action}</span>
                    <span className="text-amber-600 ml-1">– {item.description}</span>
                  </div>
                </div>
              ))}
            </div>
            <p className="text-xs text-amber-600 mt-3 italic">
              💡 Tipp: Internet am Router/Switch nur bei Bedarf für den Mac Mini aktivieren.
            </p>
          </div>
        )}
      </div>

      {/* Docker Section */}
      <div className="bg-white rounded-xl border border-slate-200 p-6 mb-6">
        <div className="flex items-center justify-between mb-4">
          <h3 className="font-semibold text-slate-900 flex items-center gap-2">
            <span className="text-2xl">🐳</span> Docker Container
          </h3>
          <div className="flex gap-2">
            <button
              onClick={dockerUp}
              disabled={actionLoading !== null || !status?.online}
              className="px-3 py-1.5 bg-green-600 text-white text-sm rounded-lg font-medium hover:bg-green-700 disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
            >
              {actionLoading === 'docker-up' ? '...' : '▶ Start'}
            </button>
            <button
              onClick={dockerDown}
              disabled={actionLoading !== null || !status?.online}
              className="px-3 py-1.5 bg-red-600 text-white text-sm rounded-lg font-medium hover:bg-red-700 disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
            >
              {actionLoading === 'docker-down' ? '...' : '⏹ Stop'}
            </button>
          </div>
        </div>

        {status?.containers && status.containers.length > 0 ? (
          <div className="space-y-2">
            {status.containers.map((container, idx) => (
              <div key={idx} className="flex items-center justify-between bg-slate-50 rounded-lg p-3">
                <div className="flex items-center gap-3">
                  <span className={`w-2 h-2 rounded-full ${
                    container.status.includes('Up') ? 'bg-green-500' : 'bg-red-500'
                  }`}></span>
                  <span className="font-medium text-slate-700">{container.name}</span>
                </div>
                <div className="flex items-center gap-4">
                  {container.ports && (
                    <span className="text-sm text-slate-500 font-mono">{container.ports}</span>
                  )}
                  <span className={`text-sm ${
                    container.status.includes('Up') ? 'text-green-600' : 'text-red-500'
                  }`}>
                    {container.status}
                  </span>
                </div>
              </div>
            ))}
          </div>
        ) : (
          <p className="text-slate-500 text-center py-4">
            {status?.online ? 'Keine Container gefunden' : 'Server nicht erreichbar'}
          </p>
        )}
      </div>

      {/* Ollama Section */}
      <div className="bg-white rounded-xl border border-slate-200 p-6">
        <h3 className="font-semibold text-slate-900 flex items-center gap-2 mb-4">
          <span className="text-2xl">🤖</span> Ollama LLM Modelle
        </h3>

        {/* Installed Models */}
        {status?.models && status.models.length > 0 ? (
          <div className="space-y-2 mb-6">
            {status.models.map((model, idx) => {
              const modelInfo = getModelInfo(model.name)
              return (
                <div key={idx} className="flex items-center justify-between bg-slate-50 rounded-lg p-3 hover:bg-slate-100 transition-colors">
                  <div className="flex items-center gap-3">
                    <span className="w-2 h-2 rounded-full bg-green-500"></span>
                    <span className="font-medium text-slate-700">{model.name}</span>
                    {modelInfo && (
                      <button
                        onClick={() => setSelectedModel(model.name)}
                        className="text-blue-500 hover:text-blue-700 transition-colors"
                        title="Modell-Info anzeigen"
                      >
                        <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
                        </svg>
                      </button>
                    )}
                    {modelInfo?.category === 'vision' && (
                      <span className="px-2 py-0.5 text-xs bg-purple-100 text-purple-700 rounded-full">Vision</span>
                    )}
                  </div>
                  <div className="flex items-center gap-4">
                    <span className="text-sm text-slate-500">{model.size}</span>
                    <span className="text-sm text-slate-400">{model.modified}</span>
                  </div>
                </div>
              )
            })}
          </div>
        ) : (
          <p className="text-slate-500 text-center py-4 mb-6">
            {status?.ollama ? 'Keine Modelle installiert' : 'Ollama nicht erreichbar'}
          </p>
        )}

        {/* Model Info Modal */}
        {selectedModel && (
          <div className="fixed inset-0 bg-black/50 flex items-center justify-center z-50" onClick={() => setSelectedModel(null)}>
            <div className="bg-white rounded-xl p-6 max-w-lg w-full mx-4 shadow-2xl" onClick={e => e.stopPropagation()}>
              {(() => {
                const info = getModelInfo(selectedModel)
                if (!info) return <p>Keine Informationen verfügbar</p>
                return (
                  <>
                    <div className="flex items-start justify-between mb-4">
                      <div>
                        <h3 className="text-xl font-bold text-slate-900">{info.name}</h3>
                        <div className="flex items-center gap-2 mt-1">
                          <span className={`px-2 py-0.5 text-xs rounded-full ${
                            info.category === 'vision' ? 'bg-purple-100 text-purple-700' :
                            info.category === 'text' ? 'bg-blue-100 text-blue-700' :
                            'bg-slate-100 text-slate-700'
                          }`}>
                            {info.category === 'vision' ? '👁️ Vision' : info.category === 'text' ? '📝 Text' : info.category}
                          </span>
                          <span className="text-sm text-slate-500">{info.size}</span>
                        </div>
                      </div>
                      <button onClick={() => setSelectedModel(null)} className="text-slate-400 hover:text-slate-600">
                        <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
                        </svg>
                      </button>
                    </div>
                    <p className="text-slate-600 mb-4">{info.description}</p>
                    <div>
                      <h4 className="font-medium text-slate-700 mb-2">Geeignet für:</h4>
                      <div className="flex flex-wrap gap-2">
                        {info.useCases.map((useCase, i) => (
                          <span key={i} className="px-3 py-1 bg-slate-100 text-slate-700 rounded-full text-sm">
                            {useCase}
                          </span>
                        ))}
                      </div>
                    </div>
                  </>
                )
              })()}
            </div>
          </div>
        )}

        {/* Download New Model */}
        <div className="border-t border-slate-200 pt-6">
          <h4 className="font-medium text-slate-700 mb-3">Neues Modell herunterladen</h4>
          <div className="flex gap-3 mb-4">
            <input
              type="text"
              value={modelInput}
              onChange={(e) => setModelInput(e.target.value)}
              placeholder="z.B. llama3.2, mistral, qwen2.5:14b"
              className="flex-1 px-4 py-2 border border-slate-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-primary-500 focus:border-transparent"
              disabled={actionLoading === 'pull'}
            />
            <button
              onClick={pullModel}
              disabled={actionLoading !== null || !status?.ollama || !modelInput.trim()}
              className="px-6 py-2 bg-primary-600 text-white rounded-lg font-medium hover:bg-primary-700 disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
            >
              {actionLoading === 'pull' ? 'Lädt...' : 'Herunterladen'}
            </button>
          </div>

          {/* Download Progress */}
          {downloadProgress && (
            <div className="bg-slate-50 rounded-lg p-4">
              <div className="flex justify-between mb-2">
                <span className="font-medium text-slate-700">{downloadProgress.model}</span>
                <span className="text-sm text-slate-500">
                  {formatBytes(downloadProgress.completed)} / {formatBytes(downloadProgress.total)}
                </span>
              </div>
              <div className="h-3 bg-slate-200 rounded-full overflow-hidden">
                <div
                  className="h-full bg-gradient-to-r from-primary-500 to-primary-600 transition-all duration-300"
                  style={{ width: `${downloadProgress.percent}%` }}
                ></div>
              </div>
              <div className="text-center mt-2 text-sm font-medium text-slate-600">
                {downloadProgress.percent}%
              </div>
            </div>
          )}

          {/* Toggle Recommendations */}
          <button
            onClick={() => setShowRecommendations(!showRecommendations)}
            className="mt-4 text-primary-600 hover:text-primary-700 font-medium text-sm flex items-center gap-2"
          >
            <svg className={`w-4 h-4 transition-transform ${showRecommendations ? 'rotate-180' : ''}`} fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 9l-7 7-7-7" />
            </svg>
            {showRecommendations ? 'Empfehlungen ausblenden' : 'Modell-Empfehlungen für Klausurkorrektur & Handschrift anzeigen'}
          </button>
        </div>

        {/* Recommendations Section */}
        {showRecommendations && (
          <div className="border-t border-slate-200 pt-6 mt-6">
            <h4 className="font-semibold text-slate-900 mb-4">📚 Empfohlene Modelle</h4>

            {/* Handwriting Recognition */}
            <div className="mb-6">
              <h5 className="font-medium text-slate-700 flex items-center gap-2 mb-3">
                <span className="text-lg">✍️</span> Handschrifterkennung (Vision-Modelle)
              </h5>
              <div className="space-y-2">
                {RECOMMENDED_MODELS.handwriting.map((rec, idx) => {
                  const info = MODEL_DATABASE[rec.model]
                  const installed = isModelInstalled(rec.model)
                  return (
                    <div key={idx} className={`flex items-center justify-between rounded-lg p-3 ${installed ? 'bg-green-50 border border-green-200' : 'bg-slate-50'}`}>
                      <div className="flex-1">
                        <div className="flex items-center gap-2">
                          <span className="font-medium text-slate-700">{info?.name || rec.model}</span>
                          <span className="px-2 py-0.5 text-xs bg-purple-100 text-purple-700 rounded-full">Vision</span>
                          {info?.recommended && <span className="px-2 py-0.5 text-xs bg-yellow-100 text-yellow-700 rounded-full">⭐ Empfohlen</span>}
                          {installed && <span className="px-2 py-0.5 text-xs bg-green-100 text-green-700 rounded-full">✓ Installiert</span>}
                        </div>
                        <p className="text-sm text-slate-500 mt-1">{rec.reason}</p>
                        <p className="text-xs text-slate-400 mt-0.5">Größe: {info?.size || 'unbekannt'}</p>
                      </div>
                      {!installed && (
                        <button
                          onClick={() => { setModelInput(rec.model); pullModel() }}
                          disabled={actionLoading !== null || !status?.ollama}
                          className="ml-4 px-4 py-2 bg-primary-600 text-white text-sm rounded-lg font-medium hover:bg-primary-700 disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
                        >
                          Installieren
                        </button>
                      )}
                    </div>
                  )
                })}
              </div>
            </div>

            {/* Grading / Text Analysis */}
            <div>
              <h5 className="font-medium text-slate-700 flex items-center gap-2 mb-3">
                <span className="text-lg">📝</span> Klausurkorrektur (Text-Modelle)
              </h5>
              <div className="space-y-2">
                {RECOMMENDED_MODELS.grading.map((rec, idx) => {
                  const info = MODEL_DATABASE[rec.model]
                  const installed = isModelInstalled(rec.model)
                  return (
                    <div key={idx} className={`flex items-center justify-between rounded-lg p-3 ${installed ? 'bg-green-50 border border-green-200' : 'bg-slate-50'}`}>
                      <div className="flex-1">
                        <div className="flex items-center gap-2">
                          <span className="font-medium text-slate-700">{info?.name || rec.model}</span>
                          <span className="px-2 py-0.5 text-xs bg-blue-100 text-blue-700 rounded-full">Text</span>
                          {info?.recommended && <span className="px-2 py-0.5 text-xs bg-yellow-100 text-yellow-700 rounded-full">⭐ Empfohlen</span>}
                          {installed && <span className="px-2 py-0.5 text-xs bg-green-100 text-green-700 rounded-full">✓ Installiert</span>}
                        </div>
                        <p className="text-sm text-slate-500 mt-1">{rec.reason}</p>
                        <p className="text-xs text-slate-400 mt-0.5">Größe: {info?.size || 'unbekannt'}</p>
                      </div>
                      {!installed && (
                        <button
                          onClick={() => { setModelInput(rec.model); pullModel() }}
                          disabled={actionLoading !== null || !status?.ollama}
                          className="ml-4 px-4 py-2 bg-primary-600 text-white text-sm rounded-lg font-medium hover:bg-primary-700 disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
                        >
                          Installieren
                        </button>
                      )}
                    </div>
                  )
                })}
              </div>
            </div>

            {/* Info Box */}
            <div className="mt-6 bg-amber-50 border border-amber-200 rounded-lg p-4">
              <div className="flex gap-3">
                <span className="text-xl">💡</span>
                <div>
                  <h5 className="font-medium text-amber-900">Tipp: Modell-Kombinationen</h5>
                  <p className="text-sm text-amber-800 mt-1">
                    Für beste Ergebnisse bei Klausuren mit Handschrift kombiniere ein <strong>Vision-Modell</strong> (für OCR/Handschrifterkennung)
                    mit einem <strong>Text-Modell</strong> (für Bewertung und Feedback). Beispiel: <code className="bg-amber-100 px-1 rounded">llama3.2-vision:11b</code> + <code className="bg-amber-100 px-1 rounded">qwen2.5:14b</code>
                  </p>
                </div>
              </div>
            </div>
          </div>
        )}
      </div>

      {/* Info */}
      <div className="mt-6 bg-blue-50 border border-blue-200 rounded-xl p-4">
        <div className="flex gap-3">
          <svg className="w-5 h-5 text-blue-600 flex-shrink-0 mt-0.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
          </svg>
          <div>
            <h4 className="font-semibold text-blue-900">Mac Mini Headless Server</h4>
            <p className="text-sm text-blue-800 mt-1">
              Der Mac Mini läuft ohne Monitor im LAN (192.168.178.100). Er hostet Docker-Container
              für das Backend, Ollama für lokale LLM-Verarbeitung und weitere Services.
              Wake-on-LAN ermöglicht das Remote-Einschalten.
            </p>
          </div>
        </div>
      </div>
    </AdminLayout>
  )
}