stechuhr3/frontend/src/views/Roles.vue

<template>
  <div class="roles-page">
    <div class="card">
      <div class="info-banner">
        <strong>Hinweis:</strong> Als Administrator können Sie hier die Berechtigungen anderer Benutzer verwalten.
        Admins haben Zugriff auf zusätzliche Funktionen wie Feiertags-Verwaltung.
      </div>

      <!-- Tabelle mit allen Benutzern -->
      <table class="users-table">
        <thead>
          <tr>
            <th>Benutzer</th>
            <th>Bundesland</th>
            <th>Aktuelle Rolle</th>
            <th>Aktion</th>
          </tr>
        </thead>
        <tbody>
          <tr v-if="users.length === 0">
            <td colspan="4" class="no-data">Keine Benutzer gefunden</td>
          </tr>
          <tr v-for="user in users" :key="user.id">
            <td>{{ user.fullName }}</td>
            <td>{{ user.stateName || '—' }}</td>
            <td>
              <span class="role-badge" :class="user.roleString">
                {{ user.roleString === 'admin' ? 'Administrator' : 'Benutzer' }}
              </span>
            </td>
            <td>
              <button 
                v-if="user.roleString === 'user'"
                @click="promoteToAdmin(user.id, user.fullName)" 
                class="btn btn-promote"
                :disabled="loading"
              >
                Zu Admin machen
              </button>
              <button 
                v-else
                @click="demoteToUser(user.id, user.fullName)" 
                class="btn btn-demote"
                :disabled="loading"
              >
                Zu Benutzer machen
              </button>
            </td>
          </tr>
        </tbody>
      </table>
    </div>

    <!-- Modal-Komponente -->
    <Modal 
      v-if="showModal"
      :show="showModal"
      :title="modalConfig.title"
      :message="modalConfig.message"
      :type="modalConfig.type"
      :confirmText="modalConfig.confirmText"
      :cancelText="modalConfig.cancelText"
      @confirm="onConfirm" 
      @cancel="onCancel" 
    />
  </div>
</template>

<script setup>
import { ref, onMounted } from 'vue'
import { useAuthStore } from '../stores/authStore'
import { useModal } from '../composables/useModal'
import Modal from '../components/Modal.vue'
import { API_BASE_URL } from '@/config/api'

const API_URL = API_BASE_URL
const authStore = useAuthStore()
const users = ref([])
const loading = ref(false)

const { showModal, modalConfig, alert, confirm, onConfirm, onCancel } = useModal()

// Lade alle Benutzer
async function loadUsers() {
  try {
    loading.value = true
    const response = await fetch(`${API_URL}/roles/users`, {
      headers: {
        'Authorization': `Bearer ${authStore.token}`
      }
    })
    
    if (!response.ok) {
      throw new Error('Fehler beim Laden der Benutzer')
    }
    
    users.value = await response.json()
  } catch (error) {
    console.error('Fehler beim Laden der Benutzer:', error)
    await alert(`Fehler: ${error.message}`, 'Fehler')
  } finally {
    loading.value = false
  }
}

// Befördere zu Admin
async function promoteToAdmin(userId, userName) {
  const confirmed = await confirm(
    `Möchten Sie ${userName} wirklich zu einem Administrator machen? Admins haben erweiterte Berechtigungen.`,
    'Zu Admin machen'
  )
  
  if (!confirmed) {
    return
  }
  
  await updateRole(userId, 1)
}

// Degradiere zu User
async function demoteToUser(userId, userName) {
  const confirmed = await confirm(
    `Möchten Sie ${userName} wirklich die Administrator-Rechte entziehen?`,
    'Zu Benutzer machen'
  )
  
  if (!confirmed) {
    return
  }
  
  await updateRole(userId, 0)
}

// Aktualisiere Rolle
async function updateRole(userId, newRole) {
  try {
    loading.value = true
    const response = await fetch(`${API_URL}/roles/users/${userId}`, {
      method: 'PUT',
      headers: {
        'Content-Type': 'application/json',
        'Authorization': `Bearer ${authStore.token}`
      },
      body: JSON.stringify({ role: newRole })
    })
    
    if (!response.ok) {
      const error = await response.json()
      throw new Error(error.message || 'Fehler beim Ändern der Rolle')
    }
    
    // Liste neu laden
    await loadUsers()
    
    await alert('Rolle erfolgreich geändert', 'Erfolg')
  } catch (error) {
    console.error('Fehler beim Ändern der Rolle:', error)
    await alert(`Fehler: ${error.message}`, 'Fehler')
  } finally {
    loading.value = false
  }
}

// Initiales Laden
onMounted(() => {
  loadUsers()
})
</script>

<style scoped>
.roles-page {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
}

.card {
  background: white;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.info-banner {
  background: #e3f2fd;
  border: 1px solid #90caf9;
  border-radius: 4px;
  padding: 12px 16px;
  margin-bottom: 20px;
  font-size: 13px;
  color: #1565c0;
}

.users-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.users-table th {
  text-align: left;
  padding: 12px 10px;
  background: #f5f5f5;
  border-bottom: 2px solid #ddd;
  font-weight: 600;
  font-size: 12px;
  color: #666;
}

.users-table td {
  padding: 12px 10px;
  border-bottom: 1px solid #eee;
}

.users-table tbody tr:hover {
  background: #f9f9f9;
}

.no-data {
  text-align: center;
  color: #999;
  font-style: italic;
  padding: 20px !important;
}

.role-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.role-badge.user {
  background: #e0e0e0;
  color: #666;
}

.role-badge.admin {
  background: #f3e5f5;
  color: #7b1fa2;
}

.btn {
  padding: 6px 14px;
  border: none;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-promote {
  background: linear-gradient(135deg, #7b1fa2, #9c27b0);
  color: white;
  box-shadow: 0 2px 4px rgba(123, 31, 162, 0.3);
}

.btn-promote:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(123, 31, 162, 0.4);
}

.btn-demote {
  background: linear-gradient(135deg, #757575, #616161);
  color: white;
  box-shadow: 0 2px 4px rgba(97, 97, 97, 0.3);
}

.btn-demote:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(97, 97, 97, 0.4);
}
</style>