'use client'

import React, { useState, useEffect } from 'react'
import Link from 'next/link'
import { useParams, useRouter } from 'next/navigation'
import {
  DSRRequest,
  DSR_TYPE_INFO,
  DSR_STATUS_INFO,
  getDaysRemaining,
  isOverdue,
  isUrgent,
  DSRCommunication,
  DSRVerifyIdentityRequest
} from '@/lib/sdk/dsr/types'
import {
  fetchSDKDSR,
  updateSDKDSRStatus,
  verifyDSRIdentity,
  assignDSR,
  extendDSRDeadline,
  completeDSR,
  rejectDSR,
  fetchDSRCommunications,
  sendDSRCommunication,
  fetchDSRExceptionChecks,
  initDSRExceptionChecks,
  updateDSRExceptionCheck,
  fetchDSRHistory,
} from '@/lib/sdk/dsr/api'
import {
  DSRWorkflowStepper,
  DSRIdentityModal,
  DSRCommunicationLog,
  DSRErasureChecklistComponent,
  DSRDataExportComponent
} from '@/components/sdk/dsr'

// =============================================================================
// COMPONENTS
// =============================================================================

function StatusBadge({ status }: { status: string }) {
  const info = DSR_STATUS_INFO[status as keyof typeof DSR_STATUS_INFO]
  if (!info) return null

  return (
    <span className={`px-3 py-1.5 text-sm font-medium rounded-lg ${info.bgColor} ${info.color} border ${info.borderColor}`}>
      {info.label}
    </span>
  )
}

function DeadlineDisplay({ request }: { request: DSRRequest }) {
  const daysRemaining = getDaysRemaining(request.deadline.currentDeadline)
  const overdue = isOverdue(request)
  const urgent = isUrgent(request)
  const isTerminal = request.status === 'completed' || request.status === 'rejected' || request.status === 'cancelled'

  if (isTerminal) {
    return (
      <div className="text-gray-500">
        <div className="text-sm">Abgeschlossen am</div>
        <div className="text-lg font-semibold">
          {request.completedAt
            ? new Date(request.completedAt).toLocaleDateString('de-DE')
            : '-'
          }
        </div>
      </div>
    )
  }

  return (
    <div className={`${overdue ? 'text-red-600' : urgent ? 'text-orange-600' : 'text-gray-900'}`}>
      <div className="text-sm">Frist</div>
      <div className="text-2xl font-bold">
        {overdue
          ? `${Math.abs(daysRemaining)} Tage ueberfaellig`
          : `${daysRemaining} Tage`
        }
      </div>
      <div className="text-xs text-gray-500 mt-1">
        bis {new Date(request.deadline.currentDeadline).toLocaleDateString('de-DE')}
      </div>
      {request.deadline.extended && (
        <div className="text-xs text-purple-600 mt-1">
          (Verlaengert)
        </div>
      )}
    </div>
  )
}

function ActionButtons({
  request,
  onVerifyIdentity,
  onExtendDeadline,
  onComplete,
  onReject,
  onAssign
}: {
  request: DSRRequest
  onVerifyIdentity: () => void
  onExtendDeadline: () => void
  onComplete: () => void
  onReject: () => void
  onAssign: () => void
}) {
  const isTerminal = request.status === 'completed' || request.status === 'rejected' || request.status === 'cancelled'

  if (isTerminal) {
    return (
      <div className="space-y-2">
        <button className="w-full px-4 py-2 text-gray-600 bg-gray-100 hover:bg-gray-200 rounded-lg transition-colors text-sm">
          PDF exportieren
        </button>
      </div>
    )
  }

  return (
    <div className="space-y-2">
      {!request.identityVerification.verified && (
        <button
          onClick={onVerifyIdentity}
          className="w-full px-4 py-2 bg-yellow-500 text-white hover:bg-yellow-600 rounded-lg transition-colors text-sm font-medium"
        >
          Identitaet verifizieren
        </button>
      )}

      <button
        onClick={onAssign}
        className="w-full px-4 py-2 text-purple-600 bg-purple-50 hover:bg-purple-100 rounded-lg transition-colors text-sm"
      >
        {request.assignment.assignedTo ? 'Neu zuweisen' : 'Zuweisen'}
      </button>

      <button
        onClick={onExtendDeadline}
        className="w-full px-4 py-2 text-gray-600 bg-gray-100 hover:bg-gray-200 rounded-lg transition-colors text-sm"
      >
        Frist verlaengern
      </button>

      <div className="border-t border-gray-200 pt-2 mt-2">
        <button
          onClick={onComplete}
          className="w-full px-4 py-2 bg-green-600 text-white hover:bg-green-700 rounded-lg transition-colors text-sm font-medium"
        >
          Abschliessen
        </button>

        <button
          onClick={onReject}
          className="w-full mt-2 px-4 py-2 text-red-600 bg-red-50 hover:bg-red-100 rounded-lg transition-colors text-sm"
        >
          Ablehnen
        </button>
      </div>
    </div>
  )
}

function AuditLog({ history }: { history: any[] }) {
  return (
    <div className="space-y-3">
      <h4 className="text-sm font-medium text-gray-700">Aktivitaeten</h4>
      <div className="space-y-2">
        {history.length === 0 && (
          <div className="text-xs text-gray-400">Keine Eintraege</div>
        )}
        {history.map((entry, idx) => (
          <div key={entry.id || idx} className="flex items-start gap-2 text-xs">
            <div className="w-1.5 h-1.5 rounded-full bg-gray-300 mt-1.5 flex-shrink-0" />
            <div>
              <div className="text-gray-900">
                {entry.previous_status
                  ? `${entry.previous_status} → ${entry.new_status}`
                  : entry.new_status
                }
                {entry.comment && `: ${entry.comment}`}
              </div>
              <div className="text-gray-500">
                {entry.created_at
                  ? new Date(entry.created_at).toLocaleDateString('de-DE', {
                      day: '2-digit',
                      month: '2-digit',
                      year: 'numeric',
                      hour: '2-digit',
                      minute: '2-digit'
                    })
                  : ''
                }
                {' - '}
                {entry.changed_by || 'System'}
              </div>
            </div>
          </div>
        ))}
      </div>
    </div>
  )
}

// =============================================================================
// MAIN PAGE
// =============================================================================

export default function DSRDetailPage() {
  const params = useParams()
  const router = useRouter()
  const requestId = params.requestId as string

  const [request, setRequest] = useState<DSRRequest | null>(null)
  const [communications, setCommunications] = useState<DSRCommunication[]>([])
  const [history, setHistory] = useState<any[]>([])
  const [exceptionChecks, setExceptionChecks] = useState<any[]>([])
  const [isLoading, setIsLoading] = useState(true)
  const [showIdentityModal, setShowIdentityModal] = useState(false)
  const [activeContentTab, setActiveContentTab] = useState<'details' | 'communication' | 'type-specific'>('details')

  const reloadRequest = async () => {
    const found = await fetchSDKDSR(requestId)
    if (found) setRequest(found)
  }

  // Load data from SDK backend
  useEffect(() => {
    const loadData = async () => {
      setIsLoading(true)
      try {
        const found = await fetchSDKDSR(requestId)
        if (found) {
          setRequest(found)
          // Load communications, history, and exception checks in parallel
          const [comms, hist] = await Promise.all([
            fetchDSRCommunications(requestId).catch(() => []),
            fetchDSRHistory(requestId).catch(() => []),
          ])
          setCommunications(comms.map((c: any) => ({
            id: c.id,
            dsrId: c.dsr_id,
            type: c.communication_type,
            channel: c.channel,
            subject: c.subject,
            content: c.content,
            createdAt: c.created_at,
            createdBy: c.created_by,
            sentAt: c.sent_at,
            sentBy: c.sent_by,
          })))
          setHistory(hist)

          // Load exception checks for erasure requests
          if (found.type === 'erasure') {
            try {
              const checks = await fetchDSRExceptionChecks(requestId)
              if (checks.length === 0) {
                // Auto-initialize if none exist
                const initialized = await initDSRExceptionChecks(requestId)
                setExceptionChecks(initialized)
              } else {
                setExceptionChecks(checks)
              }
            } catch {
              setExceptionChecks([])
            }
          }
        }
      } catch (error) {
        console.error('Failed to load DSR:', error)
      } finally {
        setIsLoading(false)
      }
    }
    loadData()
  }, [requestId])

  const handleVerifyIdentity = async (verification: DSRVerifyIdentityRequest) => {
    if (!request) return
    try {
      const updated = await verifyDSRIdentity(request.id, {
        method: verification.method,
        notes: verification.notes,
        document_ref: verification.documentRef,
      })
      setRequest(updated)
      // Reload history
      fetchDSRHistory(requestId).then(setHistory).catch(() => {})
    } catch (err) {
      console.error('Failed to verify identity:', err)
    }
  }

  const handleAssign = async () => {
    if (!request) return
    const assignee = prompt('Zuweisen an (Name/ID):')
    if (!assignee) return
    try {
      const updated = await assignDSR(request.id, assignee)
      setRequest(updated)
      fetchDSRHistory(requestId).then(setHistory).catch(() => {})
    } catch (err) {
      console.error('Failed to assign:', err)
    }
  }

  const handleExtendDeadline = async () => {
    if (!request) return
    const reason = prompt('Grund fuer die Fristverlaengerung:')
    if (!reason) return
    const daysStr = prompt('Um wie viele Tage verlaengern? (Standard: 60)', '60')
    const days = parseInt(daysStr || '60', 10) || 60
    try {
      const updated = await extendDSRDeadline(request.id, reason, days)
      setRequest(updated)
      fetchDSRHistory(requestId).then(setHistory).catch(() => {})
    } catch (err) {
      console.error('Failed to extend deadline:', err)
    }
  }

  const handleComplete = async () => {
    if (!request) return
    const summary = prompt('Zusammenfassung der Bearbeitung:')
    if (summary === null) return
    try {
      const updated = await completeDSR(request.id, summary || undefined)
      setRequest(updated)
      fetchDSRHistory(requestId).then(setHistory).catch(() => {})
    } catch (err) {
      console.error('Failed to complete:', err)
    }
  }

  const handleReject = async () => {
    if (!request) return
    const reason = prompt('Ablehnungsgrund:')
    if (!reason) return
    const legalBasis = prompt('Rechtsgrundlage (optional):')
    try {
      const updated = await rejectDSR(request.id, reason, legalBasis || undefined)
      setRequest(updated)
      fetchDSRHistory(requestId).then(setHistory).catch(() => {})
    } catch (err) {
      console.error('Failed to reject:', err)
    }
  }

  const handleSendCommunication = async (message: any) => {
    if (!request) return
    try {
      const result = await sendDSRCommunication(requestId, {
        communication_type: message.type || 'outgoing',
        channel: message.channel || 'email',
        subject: message.subject,
        content: message.content,
      })
      // Map backend response to frontend format
      const newComm: DSRCommunication = {
        id: result.id,
        dsrId: result.dsr_id,
        type: result.communication_type,
        channel: result.channel,
        subject: result.subject,
        content: result.content,
        createdAt: result.created_at,
        createdBy: result.created_by || 'Current User',
        sentAt: result.sent_at,
        sentBy: result.sent_by,
      }
      setCommunications(prev => [newComm, ...prev])
    } catch (err) {
      console.error('Failed to send communication:', err)
    }
  }

  const handleExceptionCheckChange = async (checkId: string, applies: boolean, notes?: string) => {
    try {
      const updated = await updateDSRExceptionCheck(requestId, checkId, { applies, notes })
      setExceptionChecks(prev => prev.map(c => c.id === checkId ? updated : c))
    } catch (err) {
      console.error('Failed to update exception check:', err)
    }
  }

  if (isLoading) {
    return (
      <div className="flex items-center justify-center py-12">
        <svg className="animate-spin w-8 h-8 text-purple-600" fill="none" viewBox="0 0 24 24">
          <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4" />
          <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z" />
        </svg>
      </div>
    )
  }

  if (!request) {
    return (
      <div className="bg-white rounded-xl border border-gray-200 p-12 text-center">
        <div className="w-16 h-16 mx-auto bg-red-100 rounded-full flex items-center justify-center mb-4">
          <svg className="w-8 h-8 text-red-500" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
          </svg>
        </div>
        <h3 className="text-lg font-semibold text-gray-900">Anfrage nicht gefunden</h3>
        <p className="mt-2 text-gray-500">
          Die angeforderte DSR-Anfrage existiert nicht oder wurde geloescht.
        </p>
        <Link
          href="/sdk/dsr"
          className="mt-4 inline-flex items-center gap-2 px-4 py-2 text-purple-600 hover:bg-purple-50 rounded-lg transition-colors"
        >
          <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M10 19l-7-7m0 0l7-7m-7 7h18" />
          </svg>
          Zurueck zur Uebersicht
        </Link>
      </div>
    )
  }

  const typeInfo = DSR_TYPE_INFO[request.type]
  const overdue = isOverdue(request)
  const urgent = isUrgent(request)

  return (
    <div className="space-y-6">
      {/* Header */}
      <div className="flex items-center justify-between">
        <div className="flex items-center gap-4">
          <Link
            href="/sdk/dsr"
            className="p-2 text-gray-500 hover:text-gray-700 hover:bg-gray-100 rounded-lg transition-colors"
          >
            <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M10 19l-7-7m0 0l7-7m-7 7h18" />
            </svg>
          </Link>
          <div>
            <div className="flex items-center gap-2">
              <span className="text-sm text-gray-500 font-mono">{request.referenceNumber}</span>
              <span className={`px-2 py-1 text-xs rounded-full ${typeInfo.bgColor} ${typeInfo.color}`}>
                {typeInfo.article} {typeInfo.label}
              </span>
            </div>
            <h1 className="text-2xl font-bold text-gray-900 mt-1">
              {request.requester.name}
            </h1>
          </div>
        </div>
        <button className="flex items-center gap-2 px-4 py-2 text-gray-600 bg-gray-100 hover:bg-gray-200 rounded-lg transition-colors">
          <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M4 16v1a3 3 0 003 3h10a3 3 0 003-3v-1m-4-4l-4 4m0 0l-4-4m4 4V4" />
          </svg>
          Exportieren
        </button>
      </div>

      {/* Workflow Stepper */}
      <div className={`
        bg-white rounded-xl border-2 p-6
        ${overdue ? 'border-red-200' : urgent ? 'border-orange-200' : 'border-gray-200'}
      `}>
        <DSRWorkflowStepper currentStatus={request.status} />
      </div>

      {/* Main Content: 2/3 + 1/3 Layout */}
      <div className="grid grid-cols-1 lg:grid-cols-3 gap-6">
        {/* Left Column - 2/3 */}
        <div className="lg:col-span-2 space-y-6">
          {/* Content Tabs */}
          <div className="bg-white rounded-xl border border-gray-200">
            <div className="border-b border-gray-200">
              <nav className="flex -mb-px">
                {[
                  { id: 'details', label: 'Details' },
                  { id: 'communication', label: 'Kommunikation' },
                  { id: 'type-specific', label: typeInfo.labelShort }
                ].map(tab => (
                  <button
                    key={tab.id}
                    onClick={() => setActiveContentTab(tab.id as any)}
                    className={`
                      px-6 py-4 text-sm font-medium border-b-2 transition-colors
                      ${activeContentTab === tab.id
                        ? 'border-purple-600 text-purple-600'
                        : 'border-transparent text-gray-500 hover:text-gray-700 hover:border-gray-300'
                      }
                    `}
                  >
                    {tab.label}
                  </button>
                ))}
              </nav>
            </div>

            <div className="p-6">
              {/* Details Tab */}
              {activeContentTab === 'details' && (
                <div className="space-y-6">
                  {/* Request Info */}
                  <div className="grid grid-cols-2 gap-6">
                    <div>
                      <h4 className="text-sm font-medium text-gray-500 mb-2">Antragsteller</h4>
                      <div className="space-y-2">
                        <div className="font-medium text-gray-900">{request.requester.name}</div>
                        <div className="text-sm text-gray-600">{request.requester.email}</div>
                        {request.requester.phone && (
                          <div className="text-sm text-gray-600">{request.requester.phone}</div>
                        )}
                      </div>
                    </div>
                    <div>
                      <h4 className="text-sm font-medium text-gray-500 mb-2">Eingereicht</h4>
                      <div className="space-y-2">
                        <div className="font-medium text-gray-900">
                          {new Date(request.receivedAt).toLocaleDateString('de-DE', {
                            day: '2-digit',
                            month: 'long',
                            year: 'numeric'
                          })}
                        </div>
                        <div className="text-sm text-gray-600">
                          Quelle: {request.source === 'web_form' ? 'Kontaktformular' :
                                   request.source === 'email' ? 'E-Mail' :
                                   request.source === 'letter' ? 'Brief' :
                                   request.source === 'phone' ? 'Telefon' : request.source}
                        </div>
                      </div>
                    </div>
                  </div>

                  {/* Identity Verification */}
                  <div className={`
                    p-4 rounded-xl border
                    ${request.identityVerification.verified
                      ? 'bg-green-50 border-green-200'
                      : 'bg-yellow-50 border-yellow-200'
                    }
                  `}>
                    <div className="flex items-start gap-3">
                      <div className={`
                        w-8 h-8 rounded-full flex items-center justify-center flex-shrink-0
                        ${request.identityVerification.verified ? 'bg-green-100' : 'bg-yellow-100'}
                      `}>
                        {request.identityVerification.verified ? (
                          <svg className="w-4 h-4 text-green-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M5 13l4 4L19 7" />
                          </svg>
                        ) : (
                          <svg className="w-4 h-4 text-yellow-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z" />
                          </svg>
                        )}
                      </div>
                      <div className="flex-1">
                        <div className={`font-medium ${request.identityVerification.verified ? 'text-green-800' : 'text-yellow-800'}`}>
                          {request.identityVerification.verified
                            ? 'Identitaet verifiziert'
                            : 'Identitaetspruefung ausstehend'
                          }
                        </div>
                        {request.identityVerification.verified && (
                          <div className="text-sm text-green-700 mt-1">
                            Methode: {request.identityVerification.method === 'id_document' ? 'Ausweisdokument' :
                                      request.identityVerification.method === 'email' ? 'E-Mail' :
                                      request.identityVerification.method === 'existing_account' ? 'Bestehendes Konto' :
                                      request.identityVerification.method}
                            {' | '}
                            {new Date(request.identityVerification.verifiedAt!).toLocaleDateString('de-DE')}
                          </div>
                        )}
                      </div>
                      {!request.identityVerification.verified && (
                        <button
                          onClick={() => setShowIdentityModal(true)}
                          className="px-3 py-1.5 bg-yellow-600 text-white rounded-lg hover:bg-yellow-700 transition-colors text-sm"
                        >
                          Jetzt pruefen
                        </button>
                      )}
                    </div>
                  </div>

                  {/* Request Text */}
                  {request.requestText && (
                    <div>
                      <h4 className="text-sm font-medium text-gray-500 mb-2">Anfragetext</h4>
                      <div className="bg-gray-50 rounded-xl p-4 text-gray-700 whitespace-pre-wrap">
                        {request.requestText}
                      </div>
                    </div>
                  )}

                  {/* Notes */}
                  {request.notes && (
                    <div>
                      <h4 className="text-sm font-medium text-gray-500 mb-2">Notizen</h4>
                      <div className="bg-gray-50 rounded-xl p-4 text-gray-700">
                        {request.notes}
                      </div>
                    </div>
                  )}
                </div>
              )}

              {/* Communication Tab */}
              {activeContentTab === 'communication' && (
                <DSRCommunicationLog
                  communications={communications}
                  onSendMessage={handleSendCommunication}
                />
              )}

              {/* Type-Specific Tab */}
              {activeContentTab === 'type-specific' && (
                <div>
                  {/* Art. 17 - Erasure */}
                  {request.type === 'erasure' && (
                    <div className="space-y-4">
                      <DSRErasureChecklistComponent
                        checklist={request.erasureChecklist}
                        onChange={(checklist) => setRequest({ ...request, erasureChecklist: checklist })}
                      />

                      {/* Art. 17(3) Exception Checks from Backend */}
                      {exceptionChecks.length > 0 && (
                        <div className="mt-6">
                          <h3 className="text-lg font-semibold text-gray-900 mb-3">Art. 17(3) Ausnahmepruefung</h3>
                          <p className="text-sm text-gray-500 mb-4">
                            Pruefen Sie, ob eine der gesetzlichen Ausnahmen zur Loeschpflicht greift.
                          </p>
                          <div className="space-y-3">
                            {exceptionChecks.map((check) => (
                              <div key={check.id} className="bg-gray-50 rounded-xl p-4 border border-gray-200">
                                <div className="flex items-start gap-3">
                                  <input
                                    type="checkbox"
                                    checked={check.applies || false}
                                    onChange={(e) => handleExceptionCheckChange(check.id, e.target.checked, check.notes)}
                                    className="mt-1 h-4 w-4 rounded border-gray-300 text-purple-600 focus:ring-purple-500"
                                  />
                                  <div className="flex-1">
                                    <div className="font-medium text-gray-900 text-sm">
                                      {check.article}: {check.label}
                                    </div>
                                    <div className="text-xs text-gray-500 mt-0.5">{check.description}</div>
                                    {check.checked_by && (
                                      <div className="text-xs text-gray-400 mt-1">
                                        Geprueft von {check.checked_by} am{' '}
                                        {check.checked_at ? new Date(check.checked_at).toLocaleDateString('de-DE') : '-'}
                                      </div>
                                    )}
                                  </div>
                                </div>
                              </div>
                            ))}
                          </div>
                        </div>
                      )}
                    </div>
                  )}

                  {/* Art. 15/20 - Data Export */}
                  {(request.type === 'access' || request.type === 'portability') && (
                    <DSRDataExportComponent
                      dsrId={request.id}
                      dsrType={request.type}
                      existingExport={request.dataExport}
                      onGenerate={async (format) => {
                        // Mock generation
                        setRequest({
                          ...request,
                          dataExport: {
                            format,
                            generatedAt: new Date().toISOString(),
                            generatedBy: 'Current User',
                            fileName: `datenexport_${request.referenceNumber}.${format}`,
                            fileSize: 125000,
                            includesThirdPartyData: true
                          }
                        })
                      }}
                    />
                  )}

                  {/* Art. 16 - Rectification */}
                  {request.type === 'rectification' && request.rectificationDetails && (
                    <div className="space-y-4">
                      <h3 className="text-lg font-semibold text-gray-900">Zu korrigierende Daten</h3>
                      <div className="space-y-3">
                        {request.rectificationDetails.fieldsToCorrect.map((field, idx) => (
                          <div key={idx} className="bg-gray-50 rounded-xl p-4">
                            <div className="font-medium text-gray-900 mb-2">{field.field}</div>
                            <div className="grid grid-cols-2 gap-4 text-sm">
                              <div>
                                <div className="text-gray-500 mb-1">Aktueller Wert</div>
                                <div className="text-red-600 line-through">{field.currentValue}</div>
                              </div>
                              <div>
                                <div className="text-gray-500 mb-1">Angeforderter Wert</div>
                                <div className="text-green-600">{field.requestedValue}</div>
                              </div>
                            </div>
                            {field.corrected && (
                              <div className="mt-2 text-xs text-green-600">
                                Korrigiert am {new Date(field.correctedAt!).toLocaleDateString('de-DE')}
                              </div>
                            )}
                          </div>
                        ))}
                      </div>
                    </div>
                  )}

                  {/* Art. 21 - Objection */}
                  {request.type === 'objection' && request.objectionDetails && (
                    <div className="space-y-4">
                      <h3 className="text-lg font-semibold text-gray-900">Widerspruchsdetails</h3>
                      <div className="grid grid-cols-2 gap-4">
                        <div className="bg-gray-50 rounded-xl p-4">
                          <div className="text-sm text-gray-500 mb-1">Verarbeitungszweck</div>
                          <div className="font-medium">{request.objectionDetails.processingPurpose}</div>
                        </div>
                        <div className="bg-gray-50 rounded-xl p-4">
                          <div className="text-sm text-gray-500 mb-1">Rechtsgrundlage</div>
                          <div className="font-medium">{request.objectionDetails.legalBasis}</div>
                        </div>
                      </div>
                      <div className="bg-gray-50 rounded-xl p-4">
                        <div className="text-sm text-gray-500 mb-1">Widerspruchsgruende</div>
                        <div>{request.objectionDetails.objectionGrounds}</div>
                      </div>
                      {request.objectionDetails.decision !== 'pending' && (
                        <div className={`
                          rounded-xl p-4 border
                          ${request.objectionDetails.decision === 'accepted'
                            ? 'bg-green-50 border-green-200'
                            : 'bg-red-50 border-red-200'
                          }
                        `}>
                          <div className={`font-medium ${
                            request.objectionDetails.decision === 'accepted' ? 'text-green-800' : 'text-red-800'
                          }`}>
                            Widerspruch {request.objectionDetails.decision === 'accepted' ? 'angenommen' : 'abgelehnt'}
                          </div>
                          {request.objectionDetails.decisionReason && (
                            <div className={`text-sm mt-1 ${
                              request.objectionDetails.decision === 'accepted' ? 'text-green-700' : 'text-red-700'
                            }`}>
                              {request.objectionDetails.decisionReason}
                            </div>
                          )}
                        </div>
                      )}
                    </div>
                  )}

                  {/* Default for restriction */}
                  {request.type === 'restriction' && (
                    <div className="bg-blue-50 border border-blue-200 rounded-xl p-4">
                      <div className="flex items-start gap-3">
                        <svg className="w-5 h-5 text-blue-600 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>
                          <div className="font-medium text-blue-800">Einschraenkung der Verarbeitung</div>
                          <p className="text-sm text-blue-700 mt-1">
                            Markieren Sie die betroffenen Daten im System als eingeschraenkt.
                            Die Daten duerfen nur noch gespeichert, aber nicht mehr verarbeitet werden.
                          </p>
                        </div>
                      </div>
                    </div>
                  )}
                </div>
              )}
            </div>
          </div>
        </div>

        {/* Right Column - 1/3 Sidebar */}
        <div className="space-y-6">
          {/* Status Card */}
          <div className="bg-white rounded-xl border border-gray-200 p-6 space-y-4">
            <div className="flex items-center justify-between">
              <h3 className="font-medium text-gray-900">Status</h3>
              <StatusBadge status={request.status} />
            </div>

            <div className="border-t border-gray-100 pt-4">
              <DeadlineDisplay request={request} />
            </div>

            {/* Priority */}
            <div className="border-t border-gray-100 pt-4">
              <div className="text-sm text-gray-500 mb-1">Prioritaet</div>
              <div className={`
                inline-flex px-2 py-1 text-sm font-medium rounded-lg
                ${request.priority === 'critical' ? 'bg-red-100 text-red-700' :
                  request.priority === 'high' ? 'bg-orange-100 text-orange-700' :
                  request.priority === 'normal' ? 'bg-gray-100 text-gray-700' :
                  'bg-blue-100 text-blue-700'
                }
              `}>
                {request.priority === 'critical' ? 'Kritisch' :
                 request.priority === 'high' ? 'Hoch' :
                 request.priority === 'normal' ? 'Normal' : 'Niedrig'}
              </div>
            </div>

            {/* Assignment */}
            <div className="border-t border-gray-100 pt-4">
              <div className="text-sm text-gray-500 mb-1">Zugewiesen an</div>
              <div className="font-medium text-gray-900">
                {request.assignment.assignedTo || 'Nicht zugewiesen'}
              </div>
            </div>
          </div>

          {/* Actions Card */}
          <div className="bg-white rounded-xl border border-gray-200 p-6">
            <h3 className="font-medium text-gray-900 mb-4">Aktionen</h3>
            <ActionButtons
              request={request}
              onVerifyIdentity={() => setShowIdentityModal(true)}
              onExtendDeadline={handleExtendDeadline}
              onComplete={handleComplete}
              onReject={handleReject}
              onAssign={handleAssign}
            />
          </div>

          {/* Audit Log Card */}
          <div className="bg-white rounded-xl border border-gray-200 p-6">
            <AuditLog history={history} />
          </div>
        </div>
      </div>

      {/* Identity Modal */}
      <DSRIdentityModal
        isOpen={showIdentityModal}
        onClose={() => setShowIdentityModal(false)}
        onVerify={handleVerifyIdentity}
        requesterName={request.requester.name}
        requesterEmail={request.requester.email}
      />
    </div>
  )
}