Reverse of faulty changes

Web/app.py

@@ -3795,6 +3795,7 @@ def mahnungen_admin():
         overdue_items=overdue_list,
         library_module_enabled=cfg.MODULES.is_enabled('library'),
         student_cards_module_enabled=cfg.MODULES.is_enabled('student_cards'),
+        email_service_enabled=cfg.EMAIL_ENABLED
     )
 
 @app.route('/mahnungen_reset', methods=['POST'])
@@ -8627,6 +8628,72 @@ def register_csv():
         mimetype='application/pdf'
     )
 
+@app.route('/export_users_csv', methods=['POST'])
+def export_users_csv():
+    """
+    Exports a filtered list of users to a CSV file.
+    Receives a JSON array of usernames from the frontend.
+    """
+    if 'username' not in session:
+        flash('Ihnen ist es nicht gestattet, diese Aktion auszuführen.', 'error')
+        return redirect(url_for('login'))
+
+    usernames_json = request.form.get('usernames')
+    if not usernames_json:
+        flash('Keine Benutzer zum Exportieren ausgewählt.', 'error')
+        return redirect(url_for('user_del'))
+
+    try:
+        target_usernames = json.loads(usernames_json)
+    except json.JSONDecodeError:
+        flash('Ungültige Daten beim Export übermittelt.', 'error')
+        return redirect(url_for('user_del'))
+
+    # Fetch all users
+    all_users = us.get_all_users()
+
+    # Create CSV in memory
+    si = io.StringIO()
+    # Delimiter set to semicolon (standard for Excel in German locales)
+    cw = csv.writer(si, delimiter=';')
+
+    # Write headers
+    cw.writerow(['Benutzername', 'Vorname', 'Nachname', 'Administrator', 'Rechte-Preset'])
+
+    for user in all_users:
+        encrypted_username = user.get('Username')
+        if not encrypted_username:
+            continue
+
+        uname = decrypt_text(encrypted_username)
+
+        # Only process users that were present in the frontend's filtered view
+        if uname in target_usernames:
+            try:
+                permissions_payload = us.get_effective_permissions(uname)
+                preset = permissions_payload.get('preset', 'standard_user')
+            except Exception:
+                preset = 'standard_user'
+
+            try:
+                name = us.get_name(uname) or ""
+                last_name = us.get_last_name(uname) or ""
+            except Exception:
+                name = ""
+                last_name = ""
+
+            admin_status = "Ja" if user.get('Admin', False) else "Nein"
+
+            cw.writerow([uname, name, last_name, admin_status, preset])
+
+    # Prefix with BOM (Byte Order Mark) to ensure Excel reads UTF-8 (Umlauts) correctly
+    output = '\ufeff' + si.getvalue()
+
+    return Response(
+        output,
+        mimetype="text/csv",
+        headers={"Content-disposition": "attachment; filename=benutzer_export.csv"}
+    )
 
 @app.route('/user_del', methods=['GET'])
 def user_del():

Web/templates/library_borrowings_admin.html

@@ -122,7 +122,7 @@
     letter-spacing: 0.04em;
     color: #64748b;
     background: var(--ui-surface-soft);
-    user-select: none; /* Verhindert Textmarkierung beim Klicken */
+    user-select: none;
   }
 
   .library-table tr:hover td {
@@ -151,7 +151,7 @@
   .badge-open { background: #fee2e2; color: #991b1b; }
   .badge-paid { background: #dcfce7; color: #166534; }
   .badge-damaged { background: #fee2e2; color: #991b1b; }
-  .badge-class { background: #f1f5f9; color: #475569; border: 1px solid #cbd5e1; } /* Neues Badge für Klasse */
+  .badge-class { background: #f1f5f9; color: #475569; border: 1px solid #cbd5e1; }
 
   .row-actions {
     display: flex;
@@ -168,6 +168,32 @@
     white-space: nowrap;
   }
 
+  .row-actions .btn-outline-danger {
+    color: #dc2626;
+    background-color: #fef2f2; /* Light red tint so it doesn't blend into the white table */
+    border: 2px solid #dc2626; /* Thicker, clear border */
+    padding: 6px 14px;
+    border-radius: 6px;
+    font-weight: bold;
+    font-size: 0.85rem;
+    cursor: pointer;
+    box-shadow: 0 2px 4px rgba(220, 38, 38, 0.1); /* Subtle shadow for depth */
+    transition: all 0.2s ease;
+  }
+
+  .row-actions .btn-outline-danger:hover {
+    background-color: #dc2626;
+    color: #ffffff;
+    box-shadow: 0 4px 8px rgba(220, 38, 38, 0.25);
+    transform: translateY(-1px); /* Slight lift effect on hover */
+  }
+
+  .row-actions .btn-outline-danger:active {
+    transform: translateY(0);
+    box-shadow: 0 1px 2px rgba(220, 38, 38, 0.15); /* Pressed state */
+  }
+  /* ------------------------------------------------------ */
+
   .muted {
     color: #6b7280;
     font-size: 0.92rem;

Web/templates/library_table.html

@@ -884,7 +884,7 @@
                     name: "Live",
                     type: "LiveStream",
                     // This MUST match the inner div where the video should appear
-                    target: document.querySelector('.library-scan-reader'), 
+                    target: document.querySelector('.library-scan-reader'),
                     constraints: {
                         width: 640,
                         height: 480,
@@ -897,7 +897,7 @@
                 },
                 decoder: {
                     // Keep only the barcode types you actually use to improve performance
-                    readers: ["code_128_reader", "ean_reader", "code_39_reader"] 
+                    readers: ["code_128_reader", "ean_reader", "code_39_reader"]
                 },
                 locate: true
             }, function(err) {

Web/templates/mahnungen_admin.html

@@ -179,10 +179,12 @@
                                     </td>
                                     <td class="text-end">
                                         <div class="btn-group" role="group">
+                                            {% if mail_service_enabled %}
                                             <button type="button" class="btn btn-sm btn-outline-primary"
                                                     onclick="openEmailModal('{{ item.id }}', '{{ item.schueler_name }}', '{{ item.email }}')">
                                                 <i class="bi bi-envelope"></i> E-Mail
                                             </button>
+                                            {% endif %}
                                             <button type="button" class="btn btn-sm btn-outline-warning text-dark"
                                                     onclick="resetMahnung('{{ item.id }}', '{{ item.schueler_name }}')">
                                                 <i class="bi bi-arrow-counterclockwise"></i> Zurücksetzen

Web/templates/user_del.html

@@ -53,8 +53,11 @@
                         <option value="desc">Absteigend</option>
                     </select>
                 </div>
-                <div class="col-md-2">
-                    <button class="btn btn-secondary w-100" onclick="resetFilters()">Filter zurücksetzen</button>
+                <div class="col-md-3">
+                    <div class="d-flex gap-2">
+                        <button class="btn btn-secondary flex-grow-1" onclick="resetFilters()">Zurücksetzen</button>
+                        <button class="btn btn-success flex-grow-1" onclick="exportFilteredUsers()">Exportieren</button>
+                    </div>
                 </div>
             </div>
             <div class="mt-2 text-muted small" id="filter-count"></div>
@@ -82,19 +85,20 @@
                         <td>{{ permission_presets.get(user.permission_preset, {}).get('label', user.permission_preset) }}</td>
                         <td class="actions">
                             <form method="POST" action="{{ url_for('delete_user') }}" class="d-inline">
+                                <input type="hidden" name="csrf_token" value="{{ csrf_token }}">
                                 <input type="hidden" name="username" value="{{ user.username }}">
                                 <button type="submit" class="btn btn-danger btn-sm" onclick="return confirm('Sind Sie sicher, dass Sie den Benutzer {{ user.username }} löschen möchten?')">
                                     Löschen
                                 </button>
                             </form>
-                            <button type="button" class="btn btn-primary btn-sm" 
+                            <button type="button" class="btn btn-primary btn-sm"
                                     data-username="{{ user.username }}"
                                     data-firstname="{{ user.name if user.name else '' }}"
                                     data-lastname="{{ user.last_name if user.last_name else '' }}"
                                     onclick="openEditUserModal(this)">
                                 Bearbeiten
                             </button>
-                            <button type="button" class="btn btn-warning btn-sm" 
+                            <button type="button" class="btn btn-warning btn-sm"
                                     onclick="openResetPasswordModal('{{ user.username }}')">
                                 Passwort zurücksetzen
                             </button>
@@ -124,6 +128,7 @@
                 <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
             </div>
             <form method="POST" action="{{ url_for('admin_update_user_permissions') }}">
+                <input type="hidden" name="csrf_token" value="{{ csrf_token }}">
                 <div class="modal-body permissions-modal-body">
                     <input type="hidden" id="perm-username" name="username">
                     <div class="mb-3">
@@ -180,6 +185,7 @@
                 <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
             </div>
             <form method="POST" action="{{ url_for('admin_update_user_name') }}">
+                <input type="hidden" name="csrf_token" value="{{ csrf_token }}">
                 <div class="modal-body">
                     <input type="hidden" id="edit-username" name="username">
                     <div class="mb-3">
@@ -213,6 +219,7 @@
                 <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
             </div>
             <form method="POST" action="{{ url_for('admin_reset_user_password') }}">
+                <input type="hidden" name="csrf_token" value="{{ csrf_token }}">
                 <div class="modal-body">
                     <input type="hidden" id="reset-username" name="username">
                     <div class="mb-3">
@@ -313,6 +320,54 @@
         applyFilters();
     }
 
+    function exportFilteredUsers() {
+        var table = document.getElementById('user-table');
+        var tbody = table.querySelector('tbody');
+        var rows = Array.from(tbody.querySelectorAll('tr'));
+
+        var visibleUsernames = [];
+
+        // Sammle alle Benutzernamen, die durch den Filter aktuell NICHT versteckt sind
+        rows.forEach(function(row) {
+            if (row.style.display !== 'none') {
+                var cells = row.querySelectorAll('td');
+                if (cells.length > 0) {
+                    visibleUsernames.push(cells[0].textContent.trim());
+                }
+            }
+        });
+
+        if (visibleUsernames.length === 0) {
+            alert('Keine Benutzer zum Exportieren vorhanden.');
+            return;
+        }
+
+        // Dynamisches Formular erstellen
+        var form = document.createElement('form');
+        form.method = 'POST';
+        form.action = "{{ url_for('export_users_csv') }}";
+
+        // 1. CSRF-Token als Wert (ohne Klammern) übergeben
+        var csrfInput = document.createElement('input');
+        csrfInput.type = 'hidden';
+        csrfInput.name = 'csrf_token';
+        csrfInput.value = "{{ csrf_token }}";
+        form.appendChild(csrfInput);
+
+        // 2. Gefilterte Benutzernamen hinzufügen
+        var input = document.createElement('input');
+        input.type = 'hidden';
+        input.name = 'usernames';
+        input.value = JSON.stringify(visibleUsernames);
+        form.appendChild(input);
+
+        document.body.appendChild(form);
+        form.submit();
+
+        // Aufräumen
+        document.body.removeChild(form);
+    }
+
     document.addEventListener('DOMContentLoaded', function() {
         applyFilters();
         document.getElementById('filter-search').addEventListener('input', applyFilters);
@@ -332,12 +387,12 @@
         var username = button.getAttribute('data-username');
         var name = button.getAttribute('data-firstname');
         var lastName = button.getAttribute('data-lastname');
-        
+
         document.getElementById('edit-username').value = username;
         document.getElementById('edit-username-display').value = username;
         document.getElementById('edit-name').value = name;
         document.getElementById('edit-last-name').value = lastName;
-        
+
         var modal = new bootstrap.Modal(document.getElementById('editUserModal'));
         modal.show();
     }
@@ -345,8 +400,7 @@
     function openResetPasswordModal(username) {
         document.getElementById('reset-username').value = username;
         document.getElementById('username-display').value = username;
-        
-        // Open modal using Bootstrap
+
         var modal = new bootstrap.Modal(document.getElementById('resetPasswordModal'));
         modal.show();
     }