'use client'

import React from 'react'
import { LoeschfristPolicy } from '@/lib/sdk/loeschfristen-types'
import { ComplianceCheckResult } from '@/lib/sdk/loeschfristen-compliance'
import {
  buildLoeschkonzeptHtml,
  type LoeschkonzeptOrgHeader,
  type LoeschkonzeptRevision,
} from '@/lib/sdk/loeschfristen-document'
import { downloadFile } from '@/lib/sdk/loeschfristen-export'

// ---------------------------------------------------------------------------
// Types
// ---------------------------------------------------------------------------

interface LoeschkonzeptTabProps {
  policies: LoeschfristPolicy[]
  orgHeader: LoeschkonzeptOrgHeader
  revisions: LoeschkonzeptRevision[]
  complianceResult: ComplianceCheckResult | null
  vvtActivities: any[]
  onOrgHeaderChange: (field: keyof LoeschkonzeptOrgHeader, value: string | string[]) => void
  onAddRevision: () => void
  onUpdateRevision: (index: number, field: keyof LoeschkonzeptRevision, value: string) => void
  onRemoveRevision: (index: number) => void
}

// ---------------------------------------------------------------------------
// Component
// ---------------------------------------------------------------------------

export function LoeschkonzeptTab({
  policies,
  orgHeader,
  revisions,
  complianceResult,
  vvtActivities,
  onOrgHeaderChange,
  onAddRevision,
  onUpdateRevision,
  onRemoveRevision,
}: LoeschkonzeptTabProps) {
  const activePolicies = policies.filter(p => p.status !== 'ARCHIVED')

  function handlePrintLoeschkonzept() {
    const htmlContent = buildLoeschkonzeptHtml(policies, orgHeader, vvtActivities, complianceResult, revisions)
    const printWindow = window.open('', '_blank')
    if (printWindow) {
      printWindow.document.write(htmlContent)
      printWindow.document.close()
      printWindow.focus()
      setTimeout(() => printWindow.print(), 300)
    }
  }

  function handleDownloadLoeschkonzeptHtml() {
    const htmlContent = buildLoeschkonzeptHtml(policies, orgHeader, vvtActivities, complianceResult, revisions)
    downloadFile(htmlContent, `loeschkonzept-${new Date().toISOString().split('T')[0]}.html`, 'text/html;charset=utf-8')
  }

  return (
    <div className="space-y-4">
      {/* Action bar */}
      <div className="bg-white rounded-xl border border-gray-200 p-6">
        <div className="flex items-center justify-between mb-4">
          <div>
            <h3 className="text-lg font-semibold text-gray-900">
              Loeschkonzept (Art. 5/17/30 DSGVO)
            </h3>
            <p className="text-sm text-gray-500 mt-0.5">
              Druckfertiges Loeschkonzept mit Deckblatt, Loeschregeln, VVT-Verknuepfung und Compliance-Status.
            </p>
          </div>
          <div className="flex items-center gap-2">
            <button
              onClick={handleDownloadLoeschkonzeptHtml}
              disabled={activePolicies.length === 0}
              className="bg-gray-100 text-gray-700 hover:bg-gray-200 disabled:opacity-50 disabled:cursor-not-allowed rounded-lg px-4 py-2 text-sm font-medium transition flex items-center gap-1.5"
            >
              <svg className="w-4 h-4" fill="none" viewBox="0 0 24 24" stroke="currentColor"><path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 10v6m0 0l-3-3m3 3l3-3m2 8H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z" /></svg>
              HTML herunterladen
            </button>
            <button
              onClick={handlePrintLoeschkonzept}
              disabled={activePolicies.length === 0}
              className="bg-purple-600 text-white hover:bg-purple-700 disabled:opacity-50 disabled:cursor-not-allowed rounded-lg px-4 py-2 text-sm font-medium transition flex items-center gap-1.5"
            >
              <svg className="w-4 h-4" fill="none" viewBox="0 0 24 24" stroke="currentColor"><path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M17 17h2a2 2 0 002-2v-4a2 2 0 00-2-2H5a2 2 0 00-2 2v4a2 2 0 002 2h2m2 4h6a2 2 0 002-2v-4a2 2 0 00-2-2H9a2 2 0 00-2 2v4a2 2 0 002 2zm8-12V5a2 2 0 00-2-2H9a2 2 0 00-2 2v4h10z" /></svg>
              Als PDF drucken
            </button>
          </div>
        </div>

        {activePolicies.length === 0 && (
          <div className="bg-yellow-50 text-yellow-700 text-sm rounded-lg p-3 border border-yellow-200">
            Keine aktiven Policies vorhanden. Erstellen Sie mindestens eine Policy, um das Loeschkonzept zu generieren.
          </div>
        )}
      </div>

      {/* Org Header Form */}
      <div className="bg-white rounded-xl border border-gray-200 p-6">
        <h4 className="text-sm font-semibold text-gray-900 mb-4">Organisationsdaten (Deckblatt)</h4>
        <div className="grid grid-cols-2 gap-4">
          <div>
            <label className="block text-xs font-medium text-gray-600 mb-1">Organisation</label>
            <input type="text" value={orgHeader.organizationName}
              onChange={e => onOrgHeaderChange('organizationName', e.target.value)}
              className="w-full rounded-lg border border-gray-300 px-3 py-2 text-sm focus:ring-2 focus:ring-purple-500 focus:border-purple-500"
              placeholder="Name der Organisation" />
          </div>
          <div>
            <label className="block text-xs font-medium text-gray-600 mb-1">Branche</label>
            <input type="text" value={orgHeader.industry}
              onChange={e => onOrgHeaderChange('industry', e.target.value)}
              className="w-full rounded-lg border border-gray-300 px-3 py-2 text-sm focus:ring-2 focus:ring-purple-500 focus:border-purple-500"
              placeholder="z.B. IT / Software" />
          </div>
          <div>
            <label className="block text-xs font-medium text-gray-600 mb-1">Datenschutzbeauftragter</label>
            <input type="text" value={orgHeader.dpoName}
              onChange={e => onOrgHeaderChange('dpoName', e.target.value)}
              className="w-full rounded-lg border border-gray-300 px-3 py-2 text-sm focus:ring-2 focus:ring-purple-500 focus:border-purple-500"
              placeholder="Name des DSB" />
          </div>
          <div>
            <label className="block text-xs font-medium text-gray-600 mb-1">DSB-Kontakt</label>
            <input type="text" value={orgHeader.dpoContact}
              onChange={e => onOrgHeaderChange('dpoContact', e.target.value)}
              className="w-full rounded-lg border border-gray-300 px-3 py-2 text-sm focus:ring-2 focus:ring-purple-500 focus:border-purple-500"
              placeholder="E-Mail oder Telefon" />
          </div>
          <div>
            <label className="block text-xs font-medium text-gray-600 mb-1">Verantwortlicher (Art. 4 Nr. 7)</label>
            <input type="text" value={orgHeader.responsiblePerson}
              onChange={e => onOrgHeaderChange('responsiblePerson', e.target.value)}
              className="w-full rounded-lg border border-gray-300 px-3 py-2 text-sm focus:ring-2 focus:ring-purple-500 focus:border-purple-500"
              placeholder="Name des Verantwortlichen" />
          </div>
          <div>
            <label className="block text-xs font-medium text-gray-600 mb-1">Mitarbeiter</label>
            <input type="text" value={orgHeader.employeeCount}
              onChange={e => onOrgHeaderChange('employeeCount', e.target.value)}
              className="w-full rounded-lg border border-gray-300 px-3 py-2 text-sm focus:ring-2 focus:ring-purple-500 focus:border-purple-500"
              placeholder="z.B. 50-249" />
          </div>
          <div>
            <label className="block text-xs font-medium text-gray-600 mb-1">Version</label>
            <input type="text" value={orgHeader.loeschkonzeptVersion}
              onChange={e => onOrgHeaderChange('loeschkonzeptVersion', e.target.value)}
              className="w-full rounded-lg border border-gray-300 px-3 py-2 text-sm focus:ring-2 focus:ring-purple-500 focus:border-purple-500"
              placeholder="1.0" />
          </div>
          <div>
            <label className="block text-xs font-medium text-gray-600 mb-1">Pruefintervall</label>
            <select value={orgHeader.reviewInterval}
              onChange={e => onOrgHeaderChange('reviewInterval', e.target.value)}
              className="w-full rounded-lg border border-gray-300 px-3 py-2 text-sm focus:ring-2 focus:ring-purple-500 focus:border-purple-500">
              <option value="Vierteljaehrlich">Vierteljaehrlich</option>
              <option value="Halbjaehrlich">Halbjaehrlich</option>
              <option value="Jaehrlich">Jaehrlich</option>
            </select>
          </div>
          <div>
            <label className="block text-xs font-medium text-gray-600 mb-1">Letzte Pruefung</label>
            <input type="date" value={orgHeader.lastReviewDate}
              onChange={e => onOrgHeaderChange('lastReviewDate', e.target.value)}
              className="w-full rounded-lg border border-gray-300 px-3 py-2 text-sm focus:ring-2 focus:ring-purple-500 focus:border-purple-500" />
          </div>
          <div>
            <label className="block text-xs font-medium text-gray-600 mb-1">Naechste Pruefung</label>
            <input type="date" value={orgHeader.nextReviewDate}
              onChange={e => onOrgHeaderChange('nextReviewDate', e.target.value)}
              className="w-full rounded-lg border border-gray-300 px-3 py-2 text-sm focus:ring-2 focus:ring-purple-500 focus:border-purple-500" />
          </div>
        </div>
      </div>

      {/* Revisions */}
      <div className="bg-white rounded-xl border border-gray-200 p-6">
        <div className="flex items-center justify-between mb-4">
          <h4 className="text-sm font-semibold text-gray-900">Aenderungshistorie</h4>
          <button onClick={onAddRevision}
            className="text-xs bg-purple-50 text-purple-700 hover:bg-purple-100 rounded-lg px-3 py-1.5 font-medium transition">
            + Revision hinzufuegen
          </button>
        </div>
        {revisions.length === 0 ? (
          <p className="text-sm text-gray-400">
            Noch keine Revisionen. Die Erstversion wird automatisch im Dokument eingefuegt.
          </p>
        ) : (
          <div className="space-y-3">
            {revisions.map((rev, idx) => (
              <div key={idx} className="grid grid-cols-[80px_120px_1fr_1fr_32px] gap-2 items-start">
                <input type="text" value={rev.version}
                  onChange={e => onUpdateRevision(idx, 'version', e.target.value)}
                  className="rounded-lg border border-gray-300 px-2 py-1.5 text-xs" placeholder="1.1" />
                <input type="date" value={rev.date}
                  onChange={e => onUpdateRevision(idx, 'date', e.target.value)}
                  className="rounded-lg border border-gray-300 px-2 py-1.5 text-xs" />
                <input type="text" value={rev.author}
                  onChange={e => onUpdateRevision(idx, 'author', e.target.value)}
                  className="rounded-lg border border-gray-300 px-2 py-1.5 text-xs" placeholder="Autor" />
                <input type="text" value={rev.changes}
                  onChange={e => onUpdateRevision(idx, 'changes', e.target.value)}
                  className="rounded-lg border border-gray-300 px-2 py-1.5 text-xs" placeholder="Beschreibung der Aenderungen" />
                <button onClick={() => onRemoveRevision(idx)}
                  className="text-red-400 hover:text-red-600 p-1" title="Revision entfernen">
                  <svg className="w-4 h-4" fill="none" viewBox="0 0 24 24" stroke="currentColor"><path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16" /></svg>
                </button>
              </div>
            ))}
          </div>
        )}
      </div>

      {/* Document Preview */}
      <div className="bg-white rounded-xl border border-gray-200 p-6">
        <h4 className="text-sm font-semibold text-gray-900 mb-4">Dokument-Vorschau</h4>
        <div className="bg-gray-50 rounded-lg p-6 border border-gray-200">
          <div className="text-center mb-6">
            <div className="text-2xl font-bold text-purple-700 mb-1">Loeschkonzept</div>
            <div className="text-sm text-purple-500 mb-4">gemaess Art. 5/17/30 DSGVO</div>
            <div className="text-sm text-gray-600">
              {orgHeader.organizationName || <span className="text-gray-400 italic">Organisation nicht angegeben</span>}
            </div>
            <div className="text-xs text-gray-400 mt-2">
              Version {orgHeader.loeschkonzeptVersion} | {new Date().toLocaleDateString('de-DE')}
            </div>
          </div>
          <div className="border-t border-gray-200 pt-4">
            <div className="text-xs font-semibold text-gray-500 uppercase tracking-wide mb-2">12 Sektionen</div>
            <div className="grid grid-cols-2 gap-1 text-xs text-gray-600">
              <div>1. Ziel und Zweck</div><div>7. Auftragsverarbeiter</div>
              <div>2. Geltungsbereich</div><div>8. Legal Hold Verfahren</div>
              <div>3. Grundprinzipien</div><div>9. Verantwortlichkeiten</div>
              <div>4. Loeschregeln-Uebersicht</div><div>10. Pruef-/Revisionszyklus</div>
              <div>5. Detaillierte Loeschregeln</div><div>11. Compliance-Status</div>
              <div>6. VVT-Verknuepfung</div><div>12. Aenderungshistorie</div>
            </div>
          </div>
          <div className="border-t border-gray-200 pt-4 mt-4 flex gap-6 text-xs text-gray-500">
            <span><strong className="text-gray-700">{activePolicies.length}</strong> Loeschregeln</span>
            <span><strong className="text-gray-700">{policies.filter(p => p.linkedVVTActivityIds.length > 0).length}</strong> VVT-Verknuepfungen</span>
            <span><strong className="text-gray-700">{policies.filter(p => p.linkedVendorIds.length > 0).length}</strong> Vendor-Verknuepfungen</span>
            <span><strong className="text-gray-700">{revisions.length}</strong> Revisionen</span>
            {complianceResult && (
              <span>Compliance-Score: <strong className={complianceResult.score >= 75 ? 'text-green-600' : complianceResult.score >= 50 ? 'text-yellow-600' : 'text-red-600'}>{complianceResult.score}/100</strong></span>
            )}
          </div>
        </div>
      </div>
    </div>
  )
}