Update language, add LICENSE and README

server/routes/admin.js

@@ -11,11 +11,11 @@ router.post('/users', authenticateToken, requireAdmin, async (req, res) => {
     const { name, email, password, role } = req.body;
 
     if (!name || !email || !password) {
-      return res.status(400).json({ error: 'Alle Felder sind erforderlich' });
+      return res.status(400).json({ error: 'All fields are required' });
     }
 
     if (password.length < 6) {
-      return res.status(400).json({ error: 'Passwort muss mindestens 6 Zeichen lang sein' });
+      return res.status(400).json({ error: 'Password must be at least 6 characters long' });
     }
 
     const validRole = ['user', 'admin'].includes(role) ? role : 'user';
@@ -23,7 +23,7 @@ router.post('/users', authenticateToken, requireAdmin, async (req, res) => {
 
     const existing = await db.get('SELECT id FROM users WHERE email = ?', [email.toLowerCase()]);
     if (existing) {
-      return res.status(409).json({ error: 'E-Mail wird bereits verwendet' });
+      return res.status(409).json({ error: 'Email is already in use' });
     }
 
     const hash = bcrypt.hashSync(password, 12);
@@ -36,7 +36,7 @@ router.post('/users', authenticateToken, requireAdmin, async (req, res) => {
     res.status(201).json({ user });
   } catch (err) {
     console.error('Create user error:', err);
-    res.status(500).json({ error: 'Benutzer konnte nicht erstellt werden' });
+    res.status(500).json({ error: 'User could not be created' });
   }
 });
 
@@ -54,7 +54,7 @@ router.get('/users', authenticateToken, requireAdmin, async (req, res) => {
     res.json({ users });
   } catch (err) {
     console.error('List users error:', err);
-    res.status(500).json({ error: 'Benutzer konnten nicht geladen werden' });
+    res.status(500).json({ error: 'Users could not be loaded' });
   }
 });
 
@@ -63,7 +63,7 @@ router.put('/users/:id/role', authenticateToken, requireAdmin, async (req, res)
   try {
     const { role } = req.body;
     if (!['user', 'admin'].includes(role)) {
-      return res.status(400).json({ error: 'Ungültige Rolle' });
+      return res.status(400).json({ error: 'Invalid role' });
     }
 
     const db = getDb();
@@ -73,7 +73,7 @@ router.put('/users/:id/role', authenticateToken, requireAdmin, async (req, res)
       const adminCount = await db.get('SELECT COUNT(*) as count FROM users WHERE role = ?', ['admin']);
       const currentUser = await db.get('SELECT role FROM users WHERE id = ?', [req.params.id]);
       if (currentUser?.role === 'admin' && adminCount.count <= 1) {
-        return res.status(400).json({ error: 'Der letzte Admin kann nicht herabgestuft werden' });
+        return res.status(400).json({ error: 'The last admin cannot be demoted' });
       }
     }
 
@@ -83,7 +83,7 @@ router.put('/users/:id/role', authenticateToken, requireAdmin, async (req, res)
     res.json({ user: updated });
   } catch (err) {
     console.error('Update role error:', err);
-    res.status(500).json({ error: 'Rolle konnte nicht aktualisiert werden' });
+    res.status(500).json({ error: 'Role could not be updated' });
   }
 });
 
@@ -93,27 +93,27 @@ router.delete('/users/:id', authenticateToken, requireAdmin, async (req, res) =>
     const db = getDb();
 
     if (parseInt(req.params.id) === req.user.id) {
-      return res.status(400).json({ error: 'Sie können sich nicht selbst löschen' });
+      return res.status(400).json({ error: 'You cannot delete yourself' });
     }
 
     const user = await db.get('SELECT id, role FROM users WHERE id = ?', [req.params.id]);
     if (!user) {
-      return res.status(404).json({ error: 'Benutzer nicht gefunden' });
+      return res.status(404).json({ error: 'User not found' });
     }
 
     // Check if it's the last admin
     if (user.role === 'admin') {
       const adminCount = await db.get('SELECT COUNT(*) as count FROM users WHERE role = ?', ['admin']);
       if (adminCount.count <= 1) {
-        return res.status(400).json({ error: 'Der letzte Admin kann nicht gelöscht werden' });
+        return res.status(400).json({ error: 'The last admin cannot be deleted' });
       }
     }
 
     await db.run('DELETE FROM users WHERE id = ?', [req.params.id]);
-    res.json({ message: 'Benutzer gelöscht' });
+    res.json({ message: 'User deleted' });
   } catch (err) {
     console.error('Delete user error:', err);
-    res.status(500).json({ error: 'Benutzer konnte nicht gelöscht werden' });
+    res.status(500).json({ error: 'User could not be deleted' });
   }
 });
 
@@ -122,17 +122,17 @@ router.put('/users/:id/password', authenticateToken, requireAdmin, async (req, r
   try {
     const { newPassword } = req.body;
     if (!newPassword || newPassword.length < 6) {
-      return res.status(400).json({ error: 'Passwort muss mindestens 6 Zeichen lang sein' });
+      return res.status(400).json({ error: 'Password must be at least 6 characters long' });
     }
 
     const db = getDb();
     const hash = bcrypt.hashSync(newPassword, 12);
     await db.run('UPDATE users SET password_hash = ?, updated_at = CURRENT_TIMESTAMP WHERE id = ?', [hash, req.params.id]);
 
-    res.json({ message: 'Passwort zurückgesetzt' });
+    res.json({ message: 'Password reset' });
   } catch (err) {
     console.error('Reset password error:', err);
-    res.status(500).json({ error: 'Passwort konnte nicht zurückgesetzt werden' });
+    res.status(500).json({ error: 'Password could not be reset' });
   }
 });