chore: bump version to v0.8.14

.release-version

@@ -1 +1 @@
-v0.8.12
+v0.8.14

Web/app.py

@@ -626,14 +626,18 @@ def handle_unexpected_exception(e):
     if request.is_json or request.path.startswith('/api/'):
         return jsonify({'error': 'Internal server error', 'status': 500}), 500
 
-    if 'username' in session:
+    try:
+        return render_template(
+            'maintenance.html',
+            error_code=500,
+            error_message='Das System führt gerade Wartungsarbeiten durch.',
+        ), 500
+    except Exception:
         try:
-            return render_template('error.html', error_code=500, error_message='Interner Serverfehler.'), 500
+            return render_template('error.html', error_code=500, error_message='Das System führt gerade Wartungsarbeiten durch.'), 500
         except Exception:
             return 'Internal Server Error', 500
 
-    return redirect(url_for('login'))
-
 
 def _csrf_error_response(message='CSRF token fehlt oder ist ungültig.'):
     if request.is_json or request.path.startswith('/api/') or request.path in {'/download_book_cover', '/proxy_image', '/log_mobile_issue'}:

Web/modules/database/termine.py

@@ -22,6 +22,14 @@ from Web.modules.database.settings import MongoClient
 from bson.objectid import ObjectId
 import datetime 
 
+
+def _get_tenant_db(client):
+    try:
+        from tenant import get_tenant_db
+        return get_tenant_db(client)
+    except Exception:
+        return client[cfg.MONGODB_DB]
+
 def _active_record_query(extra_query=None):
     """Build a query that excludes logically deleted records."""
     base_query = {'Deleted': {'$ne': True}}
@@ -33,7 +41,7 @@ def _active_record_query(extra_query=None):
 def add(date_start: str, date_end: str, time_span: list, slots: int, slot_lenght: int, user: str, mail: list=[], note:str="", calendar_enabled: bool=False):
     try:
         client = MongoClient(cfg.MONGODB_HOST, cfg.MONGODB_PORT)
-        db = client[cfg.MONGODB_DB]
+        db = _get_tenant_db(client)
         items = db['appointments']
 
         item = {
@@ -68,7 +76,7 @@ def get_item(id):
     """
     try:
         client = MongoClient(cfg.MONGODB_HOST, cfg.MONGODB_PORT)
-        db = client[cfg.MONGODB_DB]
+        db = _get_tenant_db(client)
         items = db['appointments']
         item = items.find_one(_active_record_query({'_id': ObjectId(id)}))
         client.close()
@@ -90,7 +98,7 @@ def update(id,slots_used: list):
     """
     try:
         client = MongoClient(cfg.MONGODB_HOST, cfg.MONGODB_PORT)
-        db = client[cfg.MONGODB_DB]
+        db = _get_tenant_db(client)
         items = db['appointments']
 
         update_data = {
@@ -124,7 +132,7 @@ def remove_slot(id, date_start_time, name):
     """
     try:
         client = MongoClient(cfg.MONGODB_HOST, cfg.MONGODB_PORT)
-        db = client[cfg.MONGODB_DB]
+        db = _get_tenant_db(client)
         items = db['appointments']
 
         # Attempt to pull the exact element (stored as an array/tuple)
@@ -152,7 +160,7 @@ def remove(id):
     """
     try:
         client = MongoClient(cfg.MONGODB_HOST, cfg.MONGODB_PORT)
-        db = client[cfg.MONGODB_DB]
+        db = _get_tenant_db(client)
         items = db['appointments']
 
         result = items.delete_one({'_id': ObjectId(id)})

Web/modules/terminplaner/blueprint.py

@@ -13,6 +13,14 @@ def _require_module_enabled():
         return redirect(url_for('home'))
     return None
 
+
+def _appointment_not_found_response():
+    return render_template(
+        'terminplaner_not_found.html',
+        error_code=404,
+        error_message='Der Termin wurde nicht gefunden.',
+    ), 404
+
 @appoint_bp.route('/client/<appointment_id>', methods=['POST', 'GET'])
 def client(appointment_id):
     """
@@ -24,8 +32,7 @@ def client(appointment_id):
 
     available = appointment_service.get_available(appointment_id)
     if not available:
-        flash('Der Termin wurde nicht gefunden.', 'error')
-        return redirect(url_for('terminplan'))
+        return _appointment_not_found_response()
 
     if request.method == 'POST':
         start_daytime = request.form.get('start_day_time')
@@ -113,8 +120,7 @@ def calendar_export(appointment_id):
 
     ics_content = appointment_service.build_calendar_ics(appointment_id)
     if not ics_content:
-        flash('Der Termin wurde nicht gefunden.', 'error')
-        return redirect(url_for('terminplaner.configure'))
+        return _appointment_not_found_response()
 
     response = Response(ics_content, mimetype='text/calendar; charset=utf-8')
     response.headers['Content-Disposition'] = f'attachment; filename=terminplan-{appointment_id}.ics'

Web/templates/maintenance.html

@@ -0,0 +1,28 @@
+{% extends "base.html" %}
+
+{% block title %}Wartungsarbeiten - Inventarsystem{% endblock %}
+
+{% block content %}
+<div class="container py-5">
+    <div class="row justify-content-center">
+        <div class="col-12 col-lg-8 col-xl-7">
+            <div class="card border-0 shadow-lg rounded-4 overflow-hidden">
+                <div class="card-header text-white" style="background: linear-gradient(135deg, #0f4c5c, #16697a);">
+                    <p class="text-uppercase small fw-semibold mb-1 opacity-75">Systemstatus</p>
+                    <h1 class="h3 mb-0 fw-bold">Wartungsarbeiten</h1>
+                </div>
+                <div class="card-body p-4 p-md-5 bg-white text-center">
+                    <div class="display-3 fw-bold text-warning mb-3">500</div>
+                    <p class="lead mb-2">Das System führt gerade Wartungsarbeiten durch.</p>
+                    <p class="text-muted mb-4">Bitte versuchen Sie es in wenigen Minuten erneut. Falls das Problem bestehen bleibt, informieren Sie bitte die Administration.</p>
+
+                    <div class="d-flex flex-column flex-sm-row justify-content-center gap-2">
+                        <a href="{{ url_for('login') }}" class="btn btn-primary btn-lg">Zum Login</a>
+                        <a href="javascript:history.back()" class="btn btn-outline-secondary btn-lg">Zurück</a>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+{% endblock %}

Web/templates/terminplan.html

@@ -41,7 +41,37 @@
         </label>
     </div>
     
-    <div id="calendar"></div>
+    <div class="calendar-stage">
+        <div id="calendar-skeleton" class="calendar-skeleton" aria-hidden="true">
+            <div class="skeleton-toolbar">
+                <span class="skeleton-pill"></span>
+                <span class="skeleton-pill"></span>
+                <span class="skeleton-pill"></span>
+            </div>
+            <div class="skeleton-grid">
+                <div class="skeleton-day-header"></div>
+                <div class="skeleton-day-header"></div>
+                <div class="skeleton-day-header"></div>
+                <div class="skeleton-day-header"></div>
+                <div class="skeleton-day-header"></div>
+                <div class="skeleton-day-header"></div>
+                <div class="skeleton-day-header"></div>
+                <div class="skeleton-slot"></div>
+                <div class="skeleton-slot"></div>
+                <div class="skeleton-slot"></div>
+                <div class="skeleton-slot"></div>
+                <div class="skeleton-slot"></div>
+                <div class="skeleton-slot"></div>
+                <div class="skeleton-slot"></div>
+                <div class="skeleton-slot"></div>
+                <div class="skeleton-slot"></div>
+                <div class="skeleton-slot"></div>
+                <div class="skeleton-slot"></div>
+                <div class="skeleton-slot"></div>
+            </div>
+        </div>
+        <div id="calendar"></div>
+    </div>
     
     <!-- Modal for new bookings -->
     <div id="booking-modal" class="modal">
@@ -254,7 +284,6 @@ document.addEventListener('DOMContentLoaded', function() {
 
     // Initialize calendar
     calendar = new FullCalendar.Calendar(calendarEl, {
-        plugins: [FullCalendar.dayGridPlugin, FullCalendar.timeGridPlugin],
         initialView: 'timeGridDay',
         locale: 'de',
         headerToolbar: false, // We're using our custom header
@@ -281,6 +310,12 @@ document.addEventListener('DOMContentLoaded', function() {
             minute: '2-digit',
             hour12: false
         },
+        loading: function(isLoading) {
+            const skeleton = document.getElementById('calendar-skeleton');
+            if (skeleton) {
+                skeleton.classList.toggle('is-hidden', !isLoading);
+            }
+        },
         selectAllow: function(info) {
             const startHour = info.start.getHours();
             const endHour = info.end.getHours();
@@ -452,6 +487,10 @@ document.addEventListener('DOMContentLoaded', function() {
 
     // Render calendar
     try {
+        const calendarSkeleton = document.getElementById('calendar-skeleton');
+        if (calendarSkeleton) {
+            calendarSkeleton.classList.remove('is-hidden');
+        }
         calendar.render();
         setCalendarView(activeCalendarView);
         
@@ -1259,6 +1298,74 @@ document.addEventListener('DOMContentLoaded', function() {
     padding: 20px;
 }
 
+.calendar-stage {
+    position: relative;
+    min-height: 620px;
+}
+
+.calendar-skeleton {
+    position: absolute;
+    inset: 0;
+    z-index: 5;
+    border: 1px solid rgba(15, 23, 42, 0.08);
+    border-radius: 20px;
+    background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(247, 250, 252, 0.96));
+    padding: 20px;
+    overflow: hidden;
+    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
+}
+
+.calendar-skeleton.is-hidden {
+    display: none;
+}
+
+.skeleton-toolbar {
+    display: flex;
+    gap: 10px;
+    margin-bottom: 18px;
+}
+
+.skeleton-pill,
+.skeleton-day-header,
+.skeleton-slot {
+    position: relative;
+    overflow: hidden;
+    background: linear-gradient(90deg, #e9eef5 0%, #f7f9fc 50%, #e9eef5 100%);
+    background-size: 200% 100%;
+    animation: skeleton-shimmer 1.4s ease-in-out infinite;
+}
+
+.skeleton-pill {
+    width: 90px;
+    height: 34px;
+    border-radius: 999px;
+}
+
+.skeleton-grid {
+    display: grid;
+    grid-template-columns: repeat(7, minmax(0, 1fr));
+    gap: 10px;
+}
+
+.skeleton-day-header {
+    height: 28px;
+    border-radius: 10px;
+}
+
+.skeleton-slot {
+    height: 72px;
+    border-radius: 14px;
+}
+
+@keyframes skeleton-shimmer {
+    0% {
+        background-position: 200% 0;
+    }
+    100% {
+        background-position: -200% 0;
+    }
+}
+
 .calendar-header {
     margin-bottom: 20px;
 }

Web/templates/terminplaner_not_found.html

@@ -0,0 +1,28 @@
+{% extends "base.html" %}
+
+{% block title %}Termin nicht gefunden - Inventarsystem{% endblock %}
+
+{% block content %}
+<div class="container py-5">
+    <div class="row justify-content-center">
+        <div class="col-12 col-lg-8 col-xl-7">
+            <div class="card border-0 shadow-lg rounded-4 overflow-hidden">
+                <div class="card-header text-white" style="background: linear-gradient(135deg, #0f4c5c, #16697a);">
+                    <p class="text-uppercase small fw-semibold mb-1 opacity-75">Terminplaner</p>
+                    <h1 class="h3 mb-0 fw-bold">Termin nicht gefunden</h1>
+                </div>
+                <div class="card-body p-4 p-md-5 bg-white text-center">
+                    <div class="display-3 fw-bold text-danger mb-3">404</div>
+                    <p class="lead mb-2">Der angeforderte Termin existiert nicht mehr oder der Link ist ungültig.</p>
+                    <p class="text-muted mb-4">Bitte prüfen Sie den Link erneut oder öffnen Sie den Terminplaner von der Startseite aus.</p>
+
+                    <div class="d-flex flex-column flex-sm-row justify-content-center gap-2">
+                        <a href="{{ url_for('home') }}" class="btn btn-primary btn-lg">Zur Startseite</a>
+                        <a href="javascript:history.back()" class="btn btn-outline-secondary btn-lg">Zurück</a>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+{% endblock %}