'use client'

import { useState } from 'react'
import type { QualityMetric } from './MetricCard'

export function MetricModal({ metric, onClose, onSave }: {
  metric?: QualityMetric
  onClose: () => void
  onSave: (data: any) => void
}) {
  const [form, setForm] = useState({
    name: metric?.name || '',
    category: metric?.category || 'accuracy',
    score: metric?.score ?? 0,
    threshold: metric?.threshold ?? 80,
    trend: metric?.trend || 'stable',
    ai_system: metric?.ai_system || '',
  })

  return (
    <div className="fixed inset-0 bg-black/50 flex items-center justify-center z-50 p-4">
      <div className="bg-white rounded-xl shadow-xl max-w-lg w-full">
        <div className="px-6 py-4 border-b border-gray-200 flex items-center justify-between">
          <h3 className="font-semibold text-gray-900">{metric ? 'Metrik bearbeiten' : 'Messung hinzufuegen'}</h3>
          <button onClick={onClose} className="text-gray-400 hover:text-gray-600">
            <svg className="w-5 h-5" 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>
        <div className="p-6 space-y-4">
          <div>
            <label className="block text-sm font-medium text-gray-700 mb-1">Name *</label>
            <input type="text" value={form.name} onChange={e => setForm(p => ({ ...p, name: e.target.value }))} className="w-full border rounded px-3 py-2 text-sm" placeholder="z.B. Accuracy Score" />
          </div>
          <div className="grid grid-cols-2 gap-4">
            <div>
              <label className="block text-sm font-medium text-gray-700 mb-1">Kategorie</label>
              <select value={form.category} onChange={e => setForm(p => ({ ...p, category: e.target.value as any }))} className="w-full border rounded px-3 py-2 text-sm">
                <option value="accuracy">Genauigkeit</option>
                <option value="fairness">Fairness</option>
                <option value="robustness">Robustheit</option>
                <option value="explainability">Erklaerbarkeit</option>
                <option value="performance">Performance</option>
              </select>
            </div>
            <div>
              <label className="block text-sm font-medium text-gray-700 mb-1">Trend</label>
              <select value={form.trend} onChange={e => setForm(p => ({ ...p, trend: e.target.value as any }))} className="w-full border rounded px-3 py-2 text-sm">
                <option value="up">Steigend</option>
                <option value="stable">Stabil</option>
                <option value="down">Fallend</option>
              </select>
            </div>
            <div>
              <label className="block text-sm font-medium text-gray-700 mb-1">Score (%)</label>
              <input type="number" step="0.1" min="0" max="100" value={form.score} onChange={e => setForm(p => ({ ...p, score: parseFloat(e.target.value) || 0 }))} className="w-full border rounded px-3 py-2 text-sm" />
            </div>
            <div>
              <label className="block text-sm font-medium text-gray-700 mb-1">Schwellenwert (%)</label>
              <input type="number" step="0.1" min="0" max="100" value={form.threshold} onChange={e => setForm(p => ({ ...p, threshold: parseFloat(e.target.value) || 80 }))} className="w-full border rounded px-3 py-2 text-sm" />
            </div>
          </div>
          <div>
            <label className="block text-sm font-medium text-gray-700 mb-1">KI-System</label>
            <input type="text" value={form.ai_system} onChange={e => setForm(p => ({ ...p, ai_system: e.target.value }))} className="w-full border rounded px-3 py-2 text-sm" placeholder="z.B. Bewerber-Screening" />
          </div>
        </div>
        <div className="px-6 py-4 border-t border-gray-200 flex justify-end gap-3">
          <button onClick={onClose} className="px-4 py-2 text-sm text-gray-600 hover:bg-gray-100 rounded-lg">Abbrechen</button>
          <button onClick={() => onSave(form)} disabled={!form.name} className="px-4 py-2 text-sm text-white bg-purple-600 hover:bg-purple-700 rounded-lg font-medium disabled:opacity-50">Speichern</button>
        </div>
      </div>
    </div>
  )
}