'use client'

import React, { useState } from 'react'
import { Course, CourseCategory, COURSE_CATEGORY_INFO } from '@/lib/sdk/academy/types'
import { updateCourse } from '@/lib/sdk/academy/api'

export function CourseEditModal({ course, onClose, onSaved }: {
  course: Course
  onClose: () => void
  onSaved: () => void
}) {
  const [title, setTitle] = useState(course.title)
  const [description, setDescription] = useState(course.description)
  const [category, setCategory] = useState<CourseCategory>(course.category)
  const [durationMinutes, setDurationMinutes] = useState(course.durationMinutes)
  const [passingScore, setPassingScore] = useState(course.passingScore ?? 70)
  const [status, setStatus] = useState<'draft' | 'published'>(course.status ?? 'draft')
  const [saving, setSaving] = useState(false)
  const [error, setError] = useState<string | null>(null)

  const handleSave = async () => {
    setSaving(true)
    setError(null)
    try {
      await updateCourse(course.id, { title, description, category, durationMinutes, passingScore, status })
      onSaved()
    } catch (e) {
      setError(e instanceof Error ? e.message : 'Fehler beim Speichern')
    } finally {
      setSaving(false)
    }
  }

  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 w-full max-w-lg">
        <div className="flex items-center justify-between p-6 border-b border-gray-200">
          <h2 className="text-lg font-semibold text-gray-900">Kurs bearbeiten</h2>
          <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">Titel</label>
            <input
              type="text"
              value={title}
              onChange={e => setTitle(e.target.value)}
              className="w-full px-3 py-2 border border-gray-300 rounded-lg text-sm focus:ring-2 focus:ring-purple-500 focus:border-purple-500"
            />
          </div>
          <div>
            <label className="block text-sm font-medium text-gray-700 mb-1">Beschreibung</label>
            <textarea
              value={description}
              onChange={e => setDescription(e.target.value)}
              rows={3}
              className="w-full px-3 py-2 border border-gray-300 rounded-lg text-sm focus:ring-2 focus:ring-purple-500 focus:border-purple-500"
            />
          </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={category}
                onChange={e => setCategory(e.target.value as CourseCategory)}
                className="w-full px-3 py-2 border border-gray-300 rounded-lg text-sm focus:ring-2 focus:ring-purple-500 focus:border-purple-500"
              >
                {Object.entries(COURSE_CATEGORY_INFO).map(([key, info]) => (
                  <option key={key} value={key}>{info.label}</option>
                ))}
              </select>
            </div>
            <div>
              <label className="block text-sm font-medium text-gray-700 mb-1">Status</label>
              <select
                value={status}
                onChange={e => setStatus(e.target.value as 'draft' | 'published')}
                className="w-full px-3 py-2 border border-gray-300 rounded-lg text-sm focus:ring-2 focus:ring-purple-500 focus:border-purple-500"
              >
                <option value="draft">Entwurf</option>
                <option value="published">Veroeffentlicht</option>
              </select>
            </div>
          </div>
          <div className="grid grid-cols-2 gap-4">
            <div>
              <label className="block text-sm font-medium text-gray-700 mb-1">Dauer (Minuten)</label>
              <input
                type="number"
                min={1}
                value={durationMinutes}
                onChange={e => setDurationMinutes(Number(e.target.value))}
                className="w-full px-3 py-2 border border-gray-300 rounded-lg text-sm focus:ring-2 focus:ring-purple-500 focus:border-purple-500"
              />
            </div>
            <div>
              <label className="block text-sm font-medium text-gray-700 mb-1">Bestehensgrenze (%)</label>
              <input
                type="number"
                min={0}
                max={100}
                value={passingScore}
                onChange={e => setPassingScore(Number(e.target.value))}
                className="w-full px-3 py-2 border border-gray-300 rounded-lg text-sm focus:ring-2 focus:ring-purple-500 focus:border-purple-500"
              />
            </div>
          </div>
          {error && <p className="text-sm text-red-600">{error}</p>}
        </div>
        <div className="flex items-center justify-end gap-3 p-6 border-t border-gray-200">
          <button onClick={onClose} className="px-4 py-2 text-sm text-gray-600 hover:bg-gray-100 rounded-lg transition-colors">
            Abbrechen
          </button>
          <button
            onClick={handleSave}
            disabled={saving || !title}
            className="px-4 py-2 text-sm bg-purple-600 text-white rounded-lg hover:bg-purple-700 disabled:opacity-50 transition-colors"
          >
            {saving ? 'Speichern...' : 'Aenderungen speichern'}
          </button>
        </div>
      </div>
    </div>
  )
}