esential bugs being fixed and some new adjustemnets for the student card functionality

Web/app.py

@@ -68,6 +68,7 @@ import logging
 from logging.handlers import RotatingFileHandler
 import secrets
 import importlib
+import atexit
 try:
     redis = importlib.import_module('redis')
 except Exception:
@@ -2190,12 +2191,13 @@ def _upload_student_cards_excel():
 
     synonyms = {
         'ausweis_id': ['ausweis_id', 'ausweisid', 'ausweis-id', 'karte', 'kartennummer', 'card_id', 'id'],
+        # NEU: Erkennung für lokales Differenzierungsmerkmal / Ausweis Ident
+        'ausweis_ident': ['lokales differenzierungsmerkmal', 'lokales_differenzierungsmerkmal', 'ausweis_ident', 'differenzierungsmerkmal'],
         'first_name': ['vorname', 'first_name', 'firstname', 'rufname'],
         'last_name': ['nachname', 'last_name', 'lastname'],
         'class_name': ['klasse', 'class', 'class_name', 'jahrgang', 'jahrgangsstufe', 'stufe', 'gruppe', 'asv_klasse'],
         'notes': ['notizen', 'notes', 'bemerkungen', 'bemerkung', 'hinweis', 'hinweise'],
-        'default_borrow_days': ['standard_ausleihdauer', 'ausleihdauer', 'borrow_days', 'tage', 'leihtage',
+        'default_borrow_days': ['standard_ausleihdauer', 'ausleihdauer', 'borrow_days', 'tage', 'leihtage', 'max_borrow_days'],
-                                'max_borrow_days'],
     }
 
     def col_index(key):
@@ -2207,6 +2209,7 @@ def _upload_student_cards_excel():
 
     mapped_indices = {
         'ausweis_id': col_index('ausweis_id'),
+        'ausweis_ident': col_index('ausweis_ident'), # NEU
         'first_name': col_index('first_name'),
         'last_name': col_index('last_name'),
         'class_name': col_index('class_name'),
@@ -2247,17 +2250,21 @@ def _upload_student_cards_excel():
                 return row_values[idx]
 
             ausweis_id = sanitize_form_value(val('ausweis_id'))
+            ausweis_ident = sanitize_form_value(val('ausweis_ident')) # NEU gelesen
             class_name = sanitize_form_value(val('class_name'))
             notes = sanitize_form_value(val('notes'))
             
+            # Ausleihdauer extrahieren und standardmäßig auf 14 setzen
             default_borrow_days = _excel_int(val('default_borrow_days'))
             if not default_borrow_days:
                 default_borrow_days = 14
 
+            # Vor- und Nachname sicher auslesen und zusammensetzen
             first_name = sanitize_form_value(val('first_name')) or ""
             last_name = sanitize_form_value(val('last_name')) or ""
             student_name = f"{first_name} {last_name}".strip()
 
+            # Leere Zeilen überspringen
             if not ausweis_id and not student_name and not class_name:
                 continue
 
@@ -2266,8 +2273,15 @@ def _upload_student_cards_excel():
             if not student_name:
                 row_errors.append('Vorname und Nachname fehlen')
 
+            # NEU: Generierung des Ausweis Ident, falls nicht in Excel vorhanden
+            if not ausweis_ident:
+                # Erstellt einen Bezeichner wie z.B. LD-A83F9
+                random_chars = "".join(random.choices(string.ascii_uppercase + string.digits, k=5))
+                ausweis_ident = f"LD-{random_chars}"
+
+            # Logik für die Haupt-AusweisID
             if not ausweis_id and student_name:
-                ausweis_id = generate_ausweis_id_excel(existing_ids)
+                ausweis_id = generate_ausweis_id(existing_ids)
                 validation_warnings.append((row_number, f'Ausweis-ID wurde automatisch erzeugt: {ausweis_id}'))
                 existing_ids.add(ausweis_id.upper()) 
             elif ausweis_id:
@@ -2284,6 +2298,7 @@ def _upload_student_cards_excel():
             planned_rows.append({
                 'row_number': row_number,
                 'ausweis_id': ausweis_id,
+                'ausweis_ident': ausweis_ident,
                 'student_name': student_name,
                 'class_name': class_name,
                 'notes': notes,
@@ -2322,6 +2337,7 @@ def _upload_student_cards_excel():
             )
             student_cards.insert_one({
                 'AusweisId': row['ausweis_id'],
+                'AusweisIdent': encrypt_text(row['ausweis_ident']), 
                 'StandardAusleihdauer': int(row['default_borrow_days']),
                 'Erstellt': datetime.datetime.now(),
                 **encrypted_payload,

Web/modules/database/user.py

@@ -704,6 +704,41 @@ def get_user_by_student_card(student_card_id):
     # Do not call dp.decrypt_text() here because found_user is a MongoDB dictionary.
     return found_user
 
+def get_user_by_student_ident(student_ident):
+    """Return user dict by student ident by decrypting all cards and matching."""
+    if not student_ident:
+        return None
+
+    # Normalisiere den Suchbegriff, den wir finden wollen
+    normalized_target = str(student_ident).strip()
+    if not normalized_target:
+        return None
+
+    client = MongoClient(cfg.MONGODB_HOST, cfg.MONGODB_PORT)
+    try:
+        db = _get_tenant_db(client)
+        all_student_cards = db['student_cards'].find()
+
+        for user_doc in all_student_cards:
+            encrypted_ident = user_doc.get('AusweisIdent')
+
+            if encrypted_ident:
+                try:
+                    decrypted_ident = dp.decrypt_text(encrypted_ident)
+                    
+                    if decrypted_ident and str(decrypted_ident).strip() == normalized_target:
+                        return user_doc 
+                        
+                except Exception as e:
+                    app.logger.error(f"Entschlüsselungsfehler bei ID {user_doc.get('_id')}: {e}")
+                    continue
+                    
+    except Exception as exc:
+        app.logger.error(f"Datenbankfehler in get_user_by_student_ident: {exc}")
+    finally:
+        client.close()
+
+    return None
 
 def make_admin(username):
     """Grant administrator privileges to a user."""

Web/requirements.txt

@@ -19,3 +19,4 @@ py-vapid>=1.9.0
 beautifulsoup4
 pywebpush
 pandas
+atexit

requirements.txt

@@ -19,3 +19,4 @@ py-vapid>=1.9.0
 beautifulsoup4
 pywebpush
 pandas
+atexit