Improvement of naming

- Add class filter dropdown and class column to borrowings table
- Implement interactive client-side column sorting for tables
- Update backend route to resolve and map user class information

Web/app.py

@@ -93,6 +93,7 @@ BASE_DIR = os.path.dirname(os.path.abspath(__file__))
 import Web.modules.database.settings as cfg
 from Web.modules.database.settings import MongoClient
 from tenant import get_tenant_context, get_tenant_db, get_tenant_trial_status, purge_expired_trial_tenants
+from pymongo.errors import DuplicateKeyError
 
 
 app = Flask(__name__, static_folder='static')  # Correctly set static folder
@@ -3311,13 +3312,17 @@ def library_view():
 def library_loans_admin():
     """Admin overview for library borrowings and damaged library items."""
     if 'username' not in session:
-        flash('Ihnen ist es nicht gestattet auf dieser Internetanwendung, die eben besuchte Adrrese zu nutzen, versuchen sie es erneut nach dem sie sich mit einem berechtigten Nutzer angemeldet haben!', 'error')
+        flash(
+            'Ihnen ist es nicht gestattet auf dieser Internetanwendung, die eben besuchte Adrrese zu nutzen, versuchen sie es erneut nach dem sie sich mit einem berechtigten Nutzer angemeldet haben!',
+            'error')
         return redirect(url_for('login'))
-    
+
     current_permissions = us.get_effective_permissions(session['username'])
 
     if not current_permissions['pages'].get('library_loans_admin', False):
-        flash('Ihnen ist es nicht gestattet auf dieser Internetanwendung, die eben besuchte Adrrese zu nutzen, versuchen sie es erneut nach dem sie sich mit einem berechtigten Nutzer angemeldet haben!', 'error')
+        flash(
+            'Ihnen ist es nicht gestattet auf dieser Internetanwendung, die eben besuchte Adrrese zu nutzen, versuchen sie es erneut nach dem sie sich mit einem berechtigten Nutzer angemeldet haben!',
+            'error')
         return redirect(url_for('library_view'))
 
     if not cfg.MODULES.is_enabled('library'):
@@ -3335,16 +3340,56 @@ def library_loans_admin():
     def fmt_money(value):
         return _format_money_value(value)
 
+    def safe_decrypt(val):
+        if not val or not isinstance(val, str):
+            return val or ''
+        try:
+            return decrypt_text(val)
+        except Exception:
+            return val
+
+    # Hilfsfunktion zur Formatierung der Schadenshistorie
+    def format_damage_history(reports, repairs):
+        fmt_reports = []
+        for r in (reports or []):
+            fmt_reports.append({
+                'description': r.get('description', ''),
+                'reported_by': r.get('reported_by', ''),
+                'reported_at': fmt_dt(r.get('reported_at'))
+            })
+
+        fmt_repairs = []
+        for rep in (repairs or []):
+            res_reports = []
+            for res in rep.get('resolved_reports', []):
+                res_reports.append({
+                    'description': res.get('description', ''),
+                    'reported_by': res.get('reported_by', ''),
+                    'reported_at': fmt_dt(res.get('reported_at'))
+                })
+            fmt_repairs.append({
+                'repaired_by': rep.get('repaired_by', ''),
+                'repaired_at': fmt_dt(rep.get('repaired_at')),
+                'resolved_reports': res_reports
+            })
+        return fmt_reports, fmt_repairs
+
     client = None
     try:
         client = MongoClient(MONGODB_HOST, MONGODB_PORT)
         db = client[MONGODB_DB]
         items_col = db['items']
         ausleihungen_col = db['ausleihungen']
+        student_cards_col = db['student_cards']
 
+        # WICHTIG: 'DamageRepairs': 1 zur Projektion hinzugefügt!
         library_items = list(items_col.find(
             {'ItemType': {'$in': LIBRARY_ITEM_TYPES}, 'Deleted': {'$ne': True}},
-            {'Name': 1, 'Code_4': 1, 'Anschaffungskosten': 1, 'Condition': 1, 'HasDamage': 1, 'DamageReports': 1, 'Verfuegbar': 1, 'User': 1, 'ItemType': 1, 'Author': 1, 'ISBN': 1}
+            {
+                'Name': 1, 'Code_4': 1, 'Anschaffungskosten': 1, 'Condition': 1,
+                'HasDamage': 1, 'DamageReports': 1, 'DamageRepairs': 1,
+                'Verfuegbar': 1, 'User': 1, 'ItemType': 1, 'Author': 1, 'ISBN': 1
+            }
         ))
         item_map = {str(item['_id']): item for item in library_items if item.get('_id')}
         item_ids = list(item_map.keys())
@@ -3353,27 +3398,63 @@ def library_loans_admin():
         if item_ids:
             active_records = list(ausleihungen_col.find(
                 {'Item': {'$in': item_ids}, 'Status': {'$in': ['active', 'planned', 'completed']}},
-                {'User': 1, 'Item': 1, 'Status': 1, 'Start': 1, 'End': 1, 'Period': 1, 'Notes': 1, 'InvoiceData': 1}
+                {'User': 1, 'Item': 1, 'Status': 1, 'Start': 1, 'End': 1, 'Period': 1, 'Notes': 1, 'InvoiceData': 1,
+                 'Klasse': 1, 'klasse': 1, 'Class': 1, 'school_class': 1}
             ).sort('Start', -1))
 
+        # class_map aufbauen (wie zuvor besprochen)
+        class_map = {}
+        all_cards = list(student_cards_col.find({}, {'SchülerName': 1, 'Klasse': 1, 'AusweisId': 1}))
+        for card in all_cards:
+            raw_cls = card.get('Klasse')
+            dec_cls = safe_decrypt(raw_cls)
+            if not dec_cls:
+                continue
+
+            raw_name = card.get('SchülerName')
+            dec_name = safe_decrypt(raw_name)
+            ausweis_id = card.get('AusweisId')
+
+            if dec_name:
+                class_map[dec_name.strip().lower()] = dec_cls
+            if raw_name:
+                class_map[raw_name] = dec_cls
+            if ausweis_id:
+                class_map[str(ausweis_id).strip().lower()] = dec_cls
+
         active_item_ids = set()
         loan_entries = []
+
         for record in active_records:
             item_id = str(record.get('Item') or '')
-            item_doc = item_map.get(item_id)
             if item_id and record.get('Status') == 'active':
                 active_item_ids.add(item_id)
 
+            item_doc = item_map.get(item_id)
             if not item_doc:
                 continue
 
             invoice_data = record.get('InvoiceData') or {}
             condition_value = str(item_doc.get('Condition', '')).strip().lower()
-            item_has_damage = bool(item_doc.get('HasDamage')) or condition_value == 'destroyed' or bool(item_doc.get('DamageReports'))
-            damage_reports = item_doc.get('DamageReports', []) or []
+
+            raw_reports = item_doc.get('DamageReports', [])
+            raw_repairs = item_doc.get('DamageRepairs', [])
+            item_has_damage = bool(item_doc.get('HasDamage')) or condition_value == 'destroyed' or bool(raw_reports)
+
+            fmt_reports, fmt_repairs = format_damage_history(raw_reports, raw_repairs)
 
             raw_user = record.get('User', '')
-            decrypted_user = decrypt_text(raw_user) if raw_user else ''
+            decrypted_user = safe_decrypt(raw_user)
+
+            user_class = (
+                    safe_decrypt(record.get('Klasse'))
+                    or safe_decrypt(record.get('Class'))
+                    or safe_decrypt(record.get('school_class'))
+                    or class_map.get(raw_user, '')
+                    or class_map.get(decrypted_user, '')
+                    or class_map.get(decrypted_user.strip().lower(), '')
+                    or '—'
+            )
 
             loan_entries.append({
                 'id': str(record.get('_id')),
@@ -3383,31 +3464,40 @@ def library_loans_admin():
                 'item_author': item_doc.get('Author', ''),
                 'item_isbn': item_doc.get('ISBN', ''),
                 'item_cost_raw': item_doc.get('Anschaffungskosten', ''),
-                'user': decrypted_user, 
+                'user': decrypted_user if decrypted_user else raw_user,
+                'klasse': user_class,
                 'status': record.get('Status', ''),
                 'start': fmt_dt(record.get('Start')),
                 'end': fmt_dt(record.get('End')),
                 'period': record.get('Period', ''),
                 'notes': record.get('Notes', ''),
                 'invoice_number': invoice_data.get('invoice_number', ''),
-                'invoice_amount': fmt_money(invoice_data.get('amount')) if invoice_data.get('amount') is not None else fmt_money(item_doc.get('Anschaffungskosten')),
+                'invoice_amount': fmt_money(invoice_data.get('amount')) if invoice_data.get(
+                    'amount') is not None else fmt_money(item_doc.get('Anschaffungskosten')),
                 'invoice_paid': bool(invoice_data.get('paid', False)),
-                'invoice_paid_at': fmt_dt(invoice_data.get('paid_at')) if isinstance(invoice_data.get('paid_at'), datetime.datetime) else '',
-                'invoice_corrections_count': len(record.get('InvoiceCorrections', []) or []),
+                'invoice_paid_at': fmt_dt(invoice_data.get('paid_at')) if isinstance(invoice_data.get('paid_at'),
+                                                                                     datetime.datetime) else '',
                 'has_damage': item_has_damage,
-                'damage_count': len(damage_reports),
-                'damage_text': (damage_reports[0].get('description', '') if damage_reports else ''),
+                'damage_count': len(raw_reports),
+                'damage_text': fmt_reports[0]['description'] if fmt_reports else '',
+                'damage_reports': fmt_reports,
+                'damage_repairs': fmt_repairs
             })
 
         damaged_items = []
         for item_doc in library_items:
             item_id = str(item_doc.get('_id') or '')
             condition_value = str(item_doc.get('Condition', '')).strip().lower()
-            damage_reports = item_doc.get('DamageReports', []) or []
-            item_has_damage = bool(item_doc.get('HasDamage')) or condition_value == 'destroyed' or bool(damage_reports)
+
+            raw_reports = item_doc.get('DamageReports', [])
+            raw_repairs = item_doc.get('DamageRepairs', [])
+            item_has_damage = bool(item_doc.get('HasDamage')) or condition_value == 'destroyed' or bool(raw_reports)
+
             if not item_has_damage or item_id in active_item_ids:
                 continue
 
+            fmt_reports, fmt_repairs = format_damage_history(raw_reports, raw_repairs)
+
             damaged_items.append({
                 'id': item_id,
                 'name': item_doc.get('Name', ''),
@@ -3415,11 +3505,13 @@ def library_loans_admin():
                 'author': item_doc.get('Author', ''),
                 'isbn': item_doc.get('ISBN', ''),
                 'condition': item_doc.get('Condition', ''),
-                'damage_count': len(damage_reports),
-                'damage_text': (damage_reports[0].get('description', '') if damage_reports else ''),
                 'available': bool(item_doc.get('Verfuegbar', False)),
                 'last_updated': fmt_dt(item_doc.get('LastUpdated')),
-                'acquisition_costs': item_doc.get('Anschaffungskosten', "")
+                'acquisition_costs': item_doc.get('Anschaffungskosten', ""),
+                'damage_count': len(raw_reports),
+                'damage_text': fmt_reports[0]['description'] if fmt_reports else '',
+                'damage_reports': fmt_reports,
+                'damage_repairs': fmt_repairs
             })
 
         return render_template(
@@ -6743,7 +6835,6 @@ def mark_damage_repaired(id):
         if result.matched_count == 0:
             return jsonify({'success': False, 'message': 'Objekt nicht gefunden.'}), 404
 
-        # Best-effort system log entry for repair action
         try:
             logs_collection = db['system_logs']
             logs_collection.insert_one({
@@ -8760,11 +8851,13 @@ def admin_create_invoice(borrow_id):
 def admin_mark_invoice_paid(borrow_id):
     """Mark an existing invoice as paid."""
     if 'username' not in session:
-        flash('Ihnen ist es nicht gestattet auf dieser Internetanwendung, die eben besuchte Adrrese zu nutzen, versuchen sie es erneut nach dem sie sich mit einem berechtigten Nutzer angemeldet haben!', 'error')
+        flash(
+            'Ihnen ist es nicht gestattet auf dieser Internetanwendung, die eben besuchte Adrrese zu nutzen, versuchen sie es erneut nach dem sie sich mit einem berechtigten Nutzer angemeldet haben!',
+            'error')
         return redirect(url_for('login'))
 
     current_permissions = us.get_effective_permissions(session['username'])
-                
+
     if not current_permissions['pages'].get('admin_borrowings', False):
         flash('Ihnen fehlen die nötigen Berechtigungen, um diese Aktion auszuführen.', 'error')
         return redirect(url_for('home_admin'))
@@ -8830,141 +8923,150 @@ def admin_mark_invoice_paid(borrow_id):
         )
 
         flash('Rechnung wurde als bezahlt markiert.', 'success')
-        return redirect(url_for('admin_borrowings'))
+        return redirect(url_for('library_loans_admin'))
     except Exception as e:
         app.logger.error(f"Error marking invoice paid for borrow {borrow_id}: {e}")
         flash('Fehler beim Markieren als bezahlt.', 'error')
-        return redirect(url_for('admin_borrowings'))
+        return redirect(url_for('library_loans_admin'))
     finally:
         if client:
             client.close()
 
 
-@app.route('/admin/borrowings/<borrow_id>/invoice/finalize', methods=['POST'])
-def admin_finalize_invoice_and_repair(borrow_id):
-    """Mark invoice as paid and item as repaired in one action."""
+@app.route('/admin/borrowings/<borrow_id>/invoice/pay', methods=['POST'])
+def admin_pay_invoice_extended(borrow_id):
+    """Mark invoice as paid and complete borrowing if active."""
     if 'username' not in session:
-        flash('Ihnen ist es nicht gestattet auf dieser Internetanwendung, die eben besuchte Adrrese zu nutzen, versuchen sie es erneut nach dem sie sich mit einem berechtigten Nutzer angemeldet haben!', 'error')
+        flash('Ihnen ist es nicht gestattet, versuchen sie es erneut nach Anmeldung!', 'error')
         return redirect(url_for('login'))
 
     current_permissions = us.get_effective_permissions(session['username'])
-    
-    if not current_permissions['pages'].get('admin_borrowings', False):
-        flash('Ihnen fehlen die nötigen Berechtigungen, um diese Aktion auszuführen.', 'error')
-        return redirect(url_for('home_admin'))
+    if not current_permissions['pages'].get('library_loans_admin', False):
+        flash('Ihnen fehlen die nötigen Berechtigungen.', 'error')
+        return redirect(request.referrer or url_for('home_admin'))
 
     client = None
     try:
         client = MongoClient(MONGODB_HOST, MONGODB_PORT)
         db = client[MONGODB_DB]
         ausleihungen = db['ausleihungen']
-        items_col = db['items']
 
         borrow_doc = ausleihungen.find_one({'_id': ObjectId(borrow_id)})
         if not borrow_doc:
             flash('Ausleihung nicht gefunden.', 'error')
-            return redirect(url_for('admin_borrowings'))
+            return redirect(request.referrer or url_for('library_loans_admin'))
 
         invoice_data = borrow_doc.get('InvoiceData') or {}
         if not invoice_data:
             flash('Für diese Ausleihung existiert keine Rechnung.', 'warning')
-            return redirect(url_for('admin_borrowings'))
-
-        item_doc = None
-        item_id = borrow_doc.get('Item')
-        if item_id:
-            try:
-                item_doc = items_col.find_one({'_id': ObjectId(item_id)})
-            except Exception:
-                item_doc = items_col.find_one({'_id': item_id})
+            return redirect(request.referrer or url_for('library_loans_admin'))
 
         now = datetime.datetime.now()
+        update_fields = {'LastUpdated': now}
 
-        update_fields = {
-            'LastUpdated': now,
-        }
         if invoice_data.get('paid') is not True:
             update_fields.update({
                 'InvoiceData.paid': True,
                 'InvoiceData.paid_at': now,
                 'InvoiceData.paid_by': session.get('username', ''),
             })
+
         if borrow_doc.get('Status') == 'active':
             update_fields['Status'] = 'completed'
             update_fields['End'] = now
 
         ausleihungen.update_one({'_id': borrow_doc['_id']}, {'$set': update_fields})
 
-        repaired = False
-        resolved_count = 0
-        if item_doc:
-            open_reports = item_doc.get('DamageReports', []) or []
-            resolved_count = len(open_reports)
-            item_update = {
-                '$set': {
-                    'DamageReports': [],
-                    'HasDamage': False,
-                    'Verfuegbar': True,
-                    'LastUpdated': now,
-                },
-                '$unset': {
-                    'User': '',
-                    'Condition': '',
-                },
-            }
-            if open_reports:
-                repair_entry = {
-                    'repaired_by': session['username'],
-                    'repaired_at': now,
-                    'resolved_reports': open_reports,
-                }
-                item_update['$push'] = {'DamageRepairs': {'$each': [repair_entry], '$position': 0}}
-
-            item_result = items_col.update_one({'_id': item_doc['_id']}, item_update)
-            repaired = item_result.matched_count > 0
-
         try:
-            logs_collection = db['system_logs']
-            logs_collection.insert_one({
-                'type': 'damage_invoice_finalize',
+            db['system_logs'].insert_one({
+                'type': 'invoice_paid',
                 'timestamp': now.isoformat(),
                 'user': session.get('username'),
                 'borrow_id': borrow_id,
-                'item_id': str(item_doc.get('_id')) if item_doc else '',
                 'invoice_number': invoice_data.get('invoice_number', ''),
                 'amount': invoice_data.get('amount'),
-                'repaired': repaired,
-                'resolved_damage_reports': resolved_count,
                 'ip': request.remote_addr,
             })
         except Exception as log_err:
-            app.logger.warning(f"Damage invoice finalize log write failed for borrow {borrow_id}: {log_err}")
+            app.logger.warning(f"Log failed: {log_err}")
 
         _append_audit_event_standalone(
-            event_type='invoice_finalized_and_repaired',
+            event_type='invoice_paid',
             payload={
                 'borrow_id': borrow_id,
-                'item_id': str(item_doc.get('_id')) if item_doc else '',
                 'invoice_number': invoice_data.get('invoice_number', ''),
                 'amount': invoice_data.get('amount'),
-                'repaired': repaired,
-                'resolved_damage_reports': resolved_count,
             }
         )
 
-        if repaired:
-            flash('Rechnung als bezahlt markiert und Element als repariert abgeschlossen.', 'success')
-        else:
-            flash('Rechnung als bezahlt markiert. Element konnte nicht repariert werden (nicht gefunden).', 'warning')
-        return redirect(url_for('admin_borrowings'))
+        flash('Rechnung erfolgreich als bezahlt markiert.', 'success')
+        return redirect(request.referrer or url_for('library_loans_admin'))
     except Exception as e:
-        app.logger.error(f"Error finalizing invoice/repair for borrow {borrow_id}: {e}")
-        flash('Fehler beim Kombinieren von bezahlt und repariert.', 'error')
-        return redirect(url_for('admin_borrowings'))
+        app.logger.error(f"Error marking invoice paid for borrow {borrow_id}: {e}")
+        flash('Fehler beim Markieren als bezahlt.', 'error')
+        return redirect(request.referrer or url_for('library_loans_admin'))
     finally:
         if client:
             client.close()
 
+@app.route('/admin/items/<item_id>/repair', methods=['POST'])
+def resolve_repaired_item(item_id):
+    """Mark item as repaired and make it available again."""
+    if 'username' not in session:
+        return redirect(url_for('login'))
+
+    client = None
+    try:
+        client = MongoClient(MONGODB_HOST, MONGODB_PORT)
+        db = client[MONGODB_DB]
+        items_col = db['items']
+
+        try:
+            obj_id = ObjectId(item_id)
+        except Exception:
+            obj_id = item_id
+
+        item_doc = items_col.find_one({'_id': obj_id})
+        if not item_doc:
+            flash('Element nicht gefunden.', 'error')
+            return redirect(request.referrer or url_for('library_loans_admin'))
+
+        now = datetime.datetime.now()
+        open_reports = item_doc.get('DamageReports', []) or []
+
+        item_update = {
+            '$set': {
+                'DamageReports': [],
+                'HasDamage': False,
+                'Verfuegbar': True,
+                'LastUpdated': now,
+            },
+            '$unset': {
+                'User': '',
+                'Condition': '',
+            },
+        }
+
+        # Historie der Reparaturen speichern
+        if open_reports:
+            repair_entry = {
+                'repaired_by': session['username'],
+                'repaired_at': now,
+                'resolved_reports': open_reports,
+            }
+            item_update['$push'] = {'DamageRepairs': {'$each': [repair_entry], '$position': 0}}
+
+        items_col.update_one({'_id': item_doc['_id']}, item_update)
+
+        flash('Element wurde erfolgreich als repariert markiert und ist wieder verfügbar.', 'success')
+        return redirect(request.referrer or url_for('library_loans_admin'))
+    except Exception as e:
+        app.logger.error(f"Error repairing item {item_id}: {e}")
+        flash('Fehler bei der Reparatur.', 'error')
+        return redirect(request.referrer or url_for('library_loans_admin'))
+    finally:
+        if client:
+            client.close()
 
 @app.route('/admin/borrowings/<borrow_id>/invoice/pdf', methods=['GET'])
 def admin_view_invoice_pdf(borrow_id):
@@ -9026,15 +9128,19 @@ def admin_view_invoice_pdf(borrow_id):
 def admin_add_invoice_correction(borrow_id):
     """Append an invoice correction entry without mutating the original invoice body."""
     if 'username' not in session:
-        flash('Ihnen ist es nicht gestattet auf dieser Internetanwendung, die eben besuchte Adrrese zu nutzen, versuchen sie es erneut nach dem sie sich mit einem berechtigten Nutzer angemeldet haben!', 'error')
+        flash('Bitte melden Sie sich an, um auf diese Seite zuzugreifen.', 'error')
         return redirect(url_for('login'))
 
     current_permissions = us.get_effective_permissions(session['username'])
-            
+
     if not current_permissions['pages'].get('admin_borrowings', False):
         flash('Ihnen fehlen die nötigen Berechtigungen, um diese Aktion auszuführen.', 'error')
         return redirect(url_for('home_admin'))
 
+    if not ObjectId.is_valid(borrow_id):
+        flash('Ungültige Ausleih-ID.', 'error')
+        return redirect(url_for('admin_borrowings'))
+
     client = None
     try:
         client = MongoClient(MONGODB_HOST, MONGODB_PORT)
@@ -9064,6 +9170,7 @@ def admin_add_invoice_correction(borrow_id):
 
         now = datetime.datetime.now()
         correction_number = f"CORR-{now.strftime('%Y%m%d-%H%M%S')}-{str(borrow_doc.get('_id'))[-6:].upper()}"
+
         correction_entry = {
             'correction_number': correction_number,
             'reason': correction_reason,
@@ -9095,6 +9202,7 @@ def admin_add_invoice_correction(borrow_id):
 
         flash('Korrekturbuchung wurde revisionssicher ergänzt.', 'success')
         return redirect(url_for('admin_borrowings'))
+
     except Exception as e:
         app.logger.error(f"Error creating invoice correction for borrow {borrow_id}: {e}")
         flash('Fehler beim Anlegen der Korrekturbuchung.', 'error')
@@ -9103,10 +9211,182 @@ def admin_add_invoice_correction(borrow_id):
         if client:
             client.close()
 
+@app.route('/admin/items/<item_id>/resolve_repair', methods=['POST'])
+def admin_resolve_repair(item_id):
+    """Flask-Route für die Reparatur-Aktionen (repair, replace, delete)."""
+    if 'username' not in session:
+        flash('Bitte melden Sie sich an, um fortzufahren.', 'error')
+        return redirect(url_for('login'))
+
+    current_permissions = us.get_effective_permissions(session['username'])
+    if not current_permissions['pages'].get('library_loans_admin', False):
+        flash('Ihnen fehlen die nötigen Berechtigungen für diese Aktion.', 'error')
+        return redirect(url_for('home_admin'))
+
+    action = request.form.get('action', 'repair')
+    new_code_4 = request.form.get('new_code_4', '')
+    current_user = session.get('username', 'admin')
+
+    success, message = resolve_repaired_item_funct(item_id, action, new_code_4, current_user)
+
+    if success:
+        flash(message, 'success')
+    else:
+        flash(message, 'error')
+
+    return redirect(url_for('library_loans_admin'))
+
+
+def resolve_repaired_item_funct(item_id, action, new_code_4="", current_user="admin"):
+    """
+    Verarbeitet Items aus der Reparatur und aktualisiert die Serien-Counts
+    sowie Parent/Child-Abhängigkeiten beim Löschen korrekt.
+    Verschiebt gemeldete Schäden in die Historie (DamageRepairs) bei Reparatur/Austausch.
+    """
+    if not ObjectId.is_valid(item_id):
+        return False, "Ungültige Item-ID."
+
+    try:
+        with MongoClient(cfg.MONGODB_HOST, cfg.MONGODB_PORT) as client:
+            db = client[cfg.MONGODB_DB]
+            items = db['items']
+
+            borrowings = db['borrowings'] if 'borrowings' in db.list_collection_names() else None
+
+            item = items.find_one({'_id': ObjectId(item_id)})
+            if not item:
+                return False, "Item nicht in der Datenbank gefunden."
+
+            series_group_id = item.get('SeriesGroupId')
+            now = datetime.datetime.now()
+
+            legacy_damage_unset = {
+                'has_damage': "",
+                'DamageCount': "",
+                'damage_count': "",
+                'DamageText': "",
+                'damage_text': "",
+                'is_damaged': "",
+                'IsDamaged': ""
+            }
+
+            borrowings_unset = legacy_damage_unset.copy()
+            borrowings_unset.update({
+                'HasDamage': "",
+                'Condition': "",
+                'DamageReports': ""
+            })
+
+            # --- OPTION 1: DELETE ---
+            if action == 'delete':
+                is_parent = not item.get('IsGroupedSubItem')
+
+                if is_parent and series_group_id:
+                    sibling = items.find_one({
+                        'SeriesGroupId': series_group_id,
+                        '_id': {'$ne': ObjectId(item_id)},
+                        'Deleted': {'$ne': True}
+                    })
+
+                    if sibling:
+                        new_parent_id_str = str(sibling['_id'])
+
+                        items.update_one(
+                            {'_id': sibling['_id']},
+                            {'$set': {
+                                'IsGroupedSubItem': False,
+                                'ParentItemId': None
+                            }}
+                        )
+
+                        items.update_many(
+                            {
+                                'SeriesGroupId': series_group_id,
+                                '_id': {'$nin': [ObjectId(item_id), sibling['_id']]}
+                            },
+                            {'$set': {'ParentItemId': new_parent_id_str}}
+                        )
+
+                items.delete_one({'_id': ObjectId(item_id)})
+
+                if series_group_id:
+                    items.update_many(
+                        {'SeriesGroupId': series_group_id},
+                        {'$inc': {'SeriesCount': -1}}
+                    )
+
+                return True, "Item wurde gelöscht und der Bestand aller Serien-Items angepasst."
+
+            current_reports = item.get('DamageReports', [])
+            repair_entry = {
+                'repaired_by': current_user,
+                'repaired_at': now,
+                'action_taken': action,
+                'resolved_reports': current_reports
+            }
+
+            # --- OPTION 2: REPLACE ---
+            if action == 'replace':
+                items.update_one(
+                    {'_id': ObjectId(item_id)},
+                    {
+                        '$push': {'DamageRepairs': repair_entry},
+                        '$set': {
+                            'Code_4': str(new_code_4).strip(),
+                            'Verfuegbar': True,
+                            'HasDamage': False,
+                            'Condition': 'gut',
+                            'DamageReports': [],
+                            'LastUpdated': now
+                        },
+                        '$unset': legacy_damage_unset
+                    }
+                )
+
+                if borrowings is not None:
+                    borrowings.update_many(
+                        {'$or': [{'item_id': str(item_id)}, {'item_id': ObjectId(item_id)}]},
+                        {'$unset': borrowings_unset}
+                    )
+
+                return True, f"Item wurde ersetzt. Neuer Code 4 zugewiesen: {new_code_4}."
+
+            # --- OPTION 3: JUST REPAIR ---
+            elif action == 'repair':
+                items.update_one(
+                    {'_id': ObjectId(item_id)},
+                    {
+                        '$push': {'DamageRepairs': repair_entry},
+                        '$set': {
+                            'Verfuegbar': True,
+                            'HasDamage': False,
+                            'Condition': 'gut',
+                            'DamageReports': [],
+                            'LastUpdated': now
+                        },
+                        '$unset': legacy_damage_unset
+                    }
+                )
+
+                if borrowings is not None:
+                    borrowings.update_many(
+                        {'$or': [{'item_id': str(item_id)}, {'item_id': ObjectId(item_id)}]},
+                        {'$unset': borrowings_unset}
+                    )
+
+                return True, "Item wurde repariert und ist wieder regulär verfügbar."
+
+            else:
+                return False, "Ungültige Aktion ausgewählt."
+
+    except Exception as e:
+        print(f"Error resolving repair for item {item_id}: {e}")
+        return False, "Ein Datenbankfehler ist aufgetreten."
+
 
 @app.route('/admin/library/items/<item_id>/invoices', methods=['GET'])
 def library_item_invoices(item_id):
-    """Show all stored invoices for one specific library item."""
+    """Show all stored invoices and damages for one specific library item."""
     if 'username' not in session:
         flash(
             'Ihnen ist es nicht gestattet auf dieser Internetanwendung, die eben besuchte Adrrese zu nutzen, versuchen sie es erneut nach dem sie sich mit einem berechtigten Nutzer angemeldet haben!',
@@ -9142,6 +9422,9 @@ def library_item_invoices(item_id):
         item_id_obj = item_doc.get('_id')
         item_id_str = str(item_id_obj)
 
+        # ==========================================
+        # 1. RECHNUNGSHISTORIE (Aus Ausleihen)
+        # ==========================================
         borrow_docs = list(ausleihungen.find(
             {
                 'Item': {'$in': [item_id_str, item_id_obj]},
@@ -9172,7 +9455,9 @@ def library_item_invoices(item_id):
             entries.append({
                 'borrow_id': str(borrow_doc.get('_id')),
                 'borrow_status': borrow_doc.get('Status', ''),
-                'borrow_user': borrow_doc.get('User', ''),
+                'borrow_user': decrypt_text(borrow_doc.get('User', '')) if hasattr(borrow_doc,
+                                                                                   'get') and borrow_doc.get(
+                    'User') else '',
                 'borrow_start': borrow_doc.get('Start').strftime('%d.%m.%Y %H:%M') if isinstance(
                     borrow_doc.get('Start'), datetime.datetime) else '',
                 'borrow_end': borrow_doc.get('End').strftime('%d.%m.%Y %H:%M') if isinstance(borrow_doc.get('End'),
@@ -9188,6 +9473,121 @@ def library_item_invoices(item_id):
                 'invoice_paid_by': invoice_data.get('paid_by', ''),
             })
 
+        # ==========================================
+        # 2. SCHADENSHISTORIE (Neues Format + Fallback)
+        # ==========================================
+        raw_damages = []
+
+        # A: Aktive / gemeldete Schäden aus 'DamageReports'
+        damage_reports = item_doc.get('DamageReports', [])
+        if not isinstance(damage_reports, list):
+            damage_reports = []
+
+        for d in damage_reports:
+            if not isinstance(d, dict): continue
+
+            # Rechnungs-Metadaten anhängen, falls vorhanden
+            extra_info = ""
+            if d.get('invoice_number'):
+                amount = d.get('invoice_amount', '')
+                extra_info = f"\n(Mit Rechnung: {d['invoice_number']} - {amount}€)"
+
+            raw_damages.append({
+                'raw_date': d.get('reported_at'),
+                'source': str(d.get('source', 'Meldung')).capitalize(),
+                'user': d.get('reported_by', 'System/Admin'),
+                'description': d.get('description', 'Keine Beschreibung') + extra_info,
+                'status': 'Offen',
+                'borrow_id': None
+            })
+
+        # B: Behobene Schäden aus 'DamageRepairs'
+        damage_repairs = item_doc.get('DamageRepairs', [])
+        if not isinstance(damage_repairs, list):
+            damage_repairs = []
+
+        for r in damage_repairs:
+            if not isinstance(r, dict): continue
+            resolved_list = r.get('resolved_reports', [])
+            repaired_at = r.get('repaired_at')
+            repaired_by = r.get('repaired_by', 'Admin')
+            action_taken = r.get('action_taken', 'repair')
+
+            # Status anhand der Aktion bestimmen
+            status_text = 'Repariert' if action_taken == 'repair' else 'Erledigt'
+
+            if resolved_list and isinstance(resolved_list, list):
+                for res in resolved_list:
+                    # Rechnungs-Metadaten aus dem ehemals offenen Report
+                    extra_info = ""
+                    if res.get('invoice_number'):
+                        amount = res.get('invoice_amount', '')
+                        extra_info = f"\n(Mit Rechnung: {res['invoice_number']} - {amount}€)"
+
+                    raw_damages.append({
+                        'raw_date': res.get('reported_at') or repaired_at,
+                        'source': f"{status_text} von {repaired_by}",
+                        'user': res.get('reported_by', 'System/Admin'),
+                        'description': res.get('description', 'Keine Beschreibung') + extra_info,
+                        'status': status_text,
+                        'borrow_id': None
+                    })
+            else:
+                # Fallback, falls keine genauen Reports hinterlegt sind
+                raw_damages.append({
+                    'raw_date': repaired_at,
+                    'source': 'Reparatur',
+                    'user': repaired_by,
+                    'description': 'Schaden behoben',
+                    'status': status_text,
+                    'borrow_id': None
+                })
+
+        # C: Legacy-Fallback: Schäden, die evtl. nur in alten Ausleih-Dokumenten vermerkt sind
+        damage_borrow_docs = list(ausleihungen.find(
+            {
+                'Item': {'$in': [item_id_str, item_id_obj]},
+                '$or': [
+                    {'Damage': {'$exists': True, '$ne': ''}},
+                    {'DamageData': {'$exists': True, '$ne': {}}},
+                    {'Condition': {'$exists': True, '$ne': ''}}
+                ]
+            }
+        ))
+
+        for b in damage_borrow_docs:
+            borrow_user = decrypt_text(b.get('User', '')) if b.get('User') else '—'
+
+            d_data = b.get('DamageData') or {}
+            if not isinstance(d_data, dict): d_data = {}
+
+            desc = d_data.get('description') or b.get('Damage') or b.get('Condition')
+
+            if desc and str(desc).strip():
+                raw_damages.append({
+                    'raw_date': d_data.get('reported_at') or b.get('End') or b.get('Start'),
+                    'source': "Ausleihe",
+                    'user': borrow_user,
+                    'description': desc,
+                    'status': d_data.get('status', 'Gemeldet'),
+                    'borrow_id': str(b.get('_id'))
+                })
+
+        # Daten chronologisch (neueste zuerst) sortieren
+        def get_sort_key(entry):
+            d = entry['raw_date']
+            return d if isinstance(d, datetime.datetime) else datetime.datetime.min
+
+        raw_damages.sort(key=get_sort_key, reverse=True)
+
+        # Datums-Objekte für das Template formatieren
+        damage_entries = []
+        for entry in raw_damages:
+            d_date = entry.pop('raw_date')
+            entry['date'] = d_date.strftime('%d.%m.%Y %H:%M') if isinstance(d_date, datetime.datetime) else str(
+                d_date or 'Unbekannt')
+            damage_entries.append(entry)
+
         return render_template(
             'library_item_invoices.html',
             item={
@@ -9198,14 +9598,15 @@ def library_item_invoices(item_id):
                 'isbn': item_doc.get('ISBN', ''),
             },
             invoices=entries,
+            damages=damage_entries,
             library_module_enabled=cfg.MODULES.is_enabled('library'),
             student_cards_module_enabled=cfg.MODULES.is_enabled('student_cards'),
             mail_module_enabled=cfg.MODULES.is_enabled('mail')
         )
 
     except Exception as e:
-        app.logger.error(f"Error loading invoice history for item {item_id}: {e}")
-        flash('Fehler beim Laden der Rechnungshistorie.', 'error')
+        app.logger.error(f"Error loading invoice/damage history for item {item_id}: {e}")
+        flash('Fehler beim Laden der Rechnungs- oder Schadenshistorie.', 'error')
         return redirect(url_for('library_loans_admin'))
     finally:
         if client:

Web/modules/database/user.py

@@ -730,11 +730,11 @@ def get_user_by_student_ident(student_ident):
                         return user_doc 
                         
                 except Exception as e:
-                    app.logger.error(f"Entschlüsselungsfehler bei ID {user_doc.get('_id')}: {e}")
+                    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}")
+        logger.error(f"Datenbankfehler in get_user_by_student_ident: {exc}")
     finally:
         client.close()
 

Web/templates/library_borrowings_admin.html

@@ -72,9 +72,10 @@
     color: #1f2937;
   }
 
+  /* Angepasst für 4 Filter-Felder statt 3 */
   .filter-bar {
     display: grid;
-    grid-template-columns: 1fr 220px 220px;
+    grid-template-columns: 1fr 140px 180px 180px;
     gap: 10px;
     margin-bottom: 16px;
   }
@@ -121,6 +122,7 @@
     letter-spacing: 0.04em;
     color: #64748b;
     background: var(--ui-surface-soft);
+    user-select: none; /* Verhindert Textmarkierung beim Klicken */
   }
 
   .library-table tr:hover td {
@@ -149,11 +151,13 @@
   .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 */
 
   .row-actions {
     display: flex;
     flex-wrap: wrap;
     gap: 8px;
+    align-items: center;
   }
 
   .row-actions form {
@@ -196,7 +200,7 @@
   <div class="library-admin-hero">
     <div>
       <h1>Bibliotheks-Ausleihen</h1>
-      <p>Nur Bibliotheksmedien. Hier kannst du offene Ausleihen abschließen, Rechnungen bezahlen und defekte Medien direkt zurücksetzen.</p>
+      <p>Nur Bibliotheksmedien. Hier kannst du offene Ausleihen abschließen, Rechnungen bezahlen und defekte Medien verwalten.</p>
     </div>
     <div class="hero-actions">
       <a class="btn btn-secondary" href="{{ url_for('library_view') }}">Bibliothek öffnen</a>
@@ -215,21 +219,36 @@
       <div class="value">{{ damaged_items|length }}</div>
     </div>
     <div class="summary-card">
-      <span class="label">Direkt reparierbar</span>
+      <span class="label">Direkt bearbeitbar</span>
       <div class="value">{{ damaged_items|length }}</div>
     </div>
   </div>
 
   <div class="filter-bar">
-    <input id="library-search" type="text" placeholder="Nach Element, Benutzer, Ausweis oder Rechnung suchen...">
+    <input id="library-search" type="text" placeholder="Nach Element, Benutzer, Klasse, Ausweis oder Rechnung suchen...">
+
+    <!-- NEU: Klassen-Filter -->
+    <select id="class-filter">
+      <option value="all">Alle Klassen</option>
+      {% set classes = [] %}
+      {% for e in loan_entries %}
+        {% if e.klasse and e.klasse not in classes %}
+          {% set _ = classes.append(e.klasse) %}
+        {% endif %}
+      {% endfor %}
+      {% for c in classes|sort %}
+        <option value="{{ c|lower }}">{{ c }}</option>
+      {% endfor %}
+    </select>
+
     <select id="loan-status-filter">
-      <option value="">Alle Ausleihen</option>
+      <option value="">Alle Status</option>
       <option value="active">Aktiv</option>
       <option value="planned">Geplant</option>
       <option value="completed">Abgeschlossen</option>
     </select>
     <select id="damage-filter">
-      <option value="all">Alle Einträge</option>
+      <option value="all">Alle Zustände</option>
       <option value="damage">Nur defekt</option>
       <option value="clean">Nur ohne Schaden</option>
     </select>
@@ -241,18 +260,31 @@
     <table class="library-table" id="loans-table">
       <thead>
         <tr>
-          <th>Status</th>
-          <th>Element</th>
-          <th>Benutzer</th>
-          <th>Zeit</th>
-          <th>Rechnung</th>
-          <th>Schaden</th>
+          <!-- NEU: onClick Handler zum Sortieren hinzugefügt -->
+          <th style="cursor: pointer;" onclick="sortTable('loans-table', 0)">Status ↕</th>
+          <th style="cursor: pointer;" onclick="sortTable('loans-table', 1)">Element ↕</th>
+          <th style="cursor: pointer;" onclick="sortTable('loans-table', 2)">Benutzer ↕</th>
+          <th style="cursor: pointer;" onclick="sortTable('loans-table', 3)">Klasse ↕</th>
+          <th style="cursor: pointer;" onclick="sortTable('loans-table', 4)">Zeit ↕</th>
+          <th style="cursor: pointer;" onclick="sortTable('loans-table', 5)">Rechnung ↕</th>
+          <th style="cursor: pointer;" onclick="sortTable('loans-table', 6)">Schaden ↕</th>
           <th>Aktionen</th>
         </tr>
       </thead>
       <tbody>
+        <!-- NEU: data-klasse hinzugefügt -->
         {% for e in loan_entries %}
-        <tr class="loan-row" data-borrow-id="{{ e.id }}" data-item-id="{{ e.item_id }}" data-item-name="{{ e.item_name }}" data-item-code="{{ e.item_code }}" data-item-cost="{{ e.item_cost_raw }}" data-user-name="{{ e.user }}" data-search="{{ (e.item_name ~ ' ' ~ e.item_code ~ ' ' ~ e.user ~ ' ' ~ e.invoice_number ~ ' ' ~ e.item_author ~ ' ' ~ e.item_isbn)|lower }}" data-status="{{ e.status }}" data-has-damage="{{ '1' if e.has_damage else '0' }}">
+        <tr class="loan-row"
+            data-borrow-id="{{ e.id }}"
+            data-item-id="{{ e.item_id }}"
+            data-item-name="{{ e.item_name }}"
+            data-item-code="{{ e.item_code }}"
+            data-item-cost="{{ e.item_cost_raw }}"
+            data-user-name="{{ e.user }}"
+            data-klasse="{{ (e.klasse|default(''))|lower }}"
+            data-search="{{ (e.item_name ~ ' ' ~ e.item_code ~ ' ' ~ e.user ~ ' ' ~ (e.klasse|default('')) ~ ' ' ~ e.invoice_number ~ ' ' ~ e.item_author ~ ' ' ~ e.item_isbn)|lower }}"
+            data-status="{{ e.status }}"
+            data-has-damage="{{ '1' if e.has_damage else '0' }}">
           <td>
             {% if e.status == 'active' %}
               <span class="badge-pill badge-active">Aktiv</span>
@@ -267,15 +299,23 @@
             <div class="muted">{{ e.item_author or '—' }}</div>
             <div class="mono">{{ e.item_code or '—' }}</div>
             <div style="margin-top:6px;">
-              <a class="btn btn-outline-secondary btn-sm" href="{{ url_for('library_item_invoices', item_id=e.item_id) }}">Rechnungen</a>
+              <a class="btn btn-outline-secondary btn-sm" href="{{ url_for('library_item_invoices', item_id=e.item_id) }}">Rechnungen / Historie</a>
             </div>
           </td>
           <td>
-            <div>{{ e.user }}</div>
-            <div class="muted">{{ e.start }}{% if e.end %} bis {{ e.end }}{% endif %}</div>
+            <div><strong>{{ e.user }}</strong></div>
+          </td>
+          <!-- NEU: Klasse Spalte -->
+          <td>
+            {% if e.klasse %}
+              <span class="badge-pill badge-class">{{ e.klasse }}</span>
+            {% else %}
+              <span class="muted">—</span>
+            {% endif %}
           </td>
           <td>
             <div>{{ e.period or '—' }}</div>
+            <div class="muted">{{ e.start }}{% if e.end %} bis {{ e.end }}{% endif %}</div>
             {% if e.notes %}<div class="muted">{{ e.notes }}</div>{% endif %}
           </td>
           <td>
@@ -311,35 +351,29 @@
               {% if e.status == 'active' %}
               <button type="button" class="btn btn-outline-danger btn-sm" onclick="openDamageReportPrompt(this)">Schaden melden</button>
               {% endif %}
-              {% if e.invoice_number and ((not e.invoice_paid) or e.has_damage) %}
-              <form method="post" action="{{ url_for('admin_finalize_invoice_and_repair', borrow_id=e.id) }}" onsubmit="return confirm('Rechnung als bezahlt und Element als repariert markieren?');">
-                <button type="submit" class="btn btn-success btn-sm">
-                  {% if not e.invoice_paid and e.has_damage %}
-                    Bezahlt + repariert
-                  {% elif not e.invoice_paid %}
-                    Als bezahlt markieren
-                  {% else %}
-                    Als repariert markieren
-                  {% endif %}
-                </button>
-              </form>
-              {% elif e.has_damage %}
-              <form method="post" action="{{ url_for('mark_damage_repaired', id=e.item_id) }}" onsubmit="return confirm('Medium als repariert markieren?');">
-                <button type="submit" class="btn btn-success btn-sm">Als repariert markieren</button>
+
+              {% if e.invoice_number and not e.invoice_paid %}
+              <form method="post" action="{{ url_for('admin_mark_invoice_paid', borrow_id=e.id) }}" onsubmit="return confirm('Rechnung als bezahlt markieren?');">
+                <button type="submit" class="btn btn-success btn-sm">Als bezahlt markieren</button>
               </form>
               {% endif %}
 
+              {% if e.has_damage %}
+              <!-- Aufruf des Reparatur-Auswahl-Modals -->
+              <button type="button" class="btn btn-warning btn-sm" onclick="openRepairModal('{{ e.item_id }}', '{{ e.item_code }}')">Reparieren / Ersetzen</button>
+              {% endif %}
+
               {% if e.invoice_number %}
-              <form method="post" action="{{ url_for('admin_add_invoice_correction', borrow_id=e.id) }}" onsubmit="return confirm('Korrekturbuchung hinzufügen?');">
-                <input type="text" name="correction_reason" placeholder="Korrekturgrund" required style="padding:6px; border:1px solid #ddd; border-radius:6px; min-width:140px;">
-                <input type="text" name="amount_delta" placeholder="Delta optional" style="padding:6px; border:1px solid #ddd; border-radius:6px; width:120px;">
+              <form method="post" action="{{ url_for('admin_add_invoice_correction', borrow_id=e.id) }}" onsubmit="return confirm('Korrekturbuchung hinzufügen?');" style="display: flex; gap: 6px; align-items: center; flex-wrap: wrap;">
+                <input type="text" name="correction_reason" value="Korrektur zu {{ e.invoice_number }}" placeholder="Korrekturgrund" required style="padding:6px; border:1px solid #ddd; border-radius:6px; min-width:160px; max-width:180px;">
+                <input type="text" name="amount_delta" placeholder="z.B. -{{ e.invoice_amount }}" style="padding:6px; border:1px solid #ddd; border-radius:6px; width:120px;">
                 <button type="submit" class="btn btn-outline-danger btn-sm">Korrektur</button>
               </form>
               {% endif %}
 
               {% if e.status in ['active', 'planned'] %}
               <form method="post" action="{{ url_for('admin_reset_borrowing', borrow_id=e.id) }}" onsubmit="return confirm('Ausleihe zurücksetzen?');">
-                <button type="submit" class="btn btn-warning btn-sm">Zurücksetzen</button>
+                <button type="submit" class="btn btn-secondary btn-sm">Zurücksetzen</button>
               </form>
               {% endif %}
             </div>
@@ -360,10 +394,11 @@
     <table class="library-table" id="damaged-table">
       <thead>
         <tr>
-          <th>Element</th>
-          <th>Code</th>
-          <th>Schaden</th>
-          <th>Status</th>
+          <!-- NEU: onClick Handler zum Sortieren hinzugefügt -->
+          <th style="cursor: pointer;" onclick="sortTable('damaged-table', 0)">Element ↕</th>
+          <th style="cursor: pointer;" onclick="sortTable('damaged-table', 1)">Code ↕</th>
+          <th style="cursor: pointer;" onclick="sortTable('damaged-table', 2)">Schaden ↕</th>
+          <th style="cursor: pointer;" onclick="sortTable('damaged-table', 3)">Status ↕</th>
           <th>Aktion</th>
         </tr>
       </thead>
@@ -392,9 +427,8 @@
             <div class="row-actions" style="margin-bottom:8px;">
               <a class="btn btn-outline-secondary btn-sm" href="{{ url_for('library_item_invoices', item_id=item.id) }}">Rechnungen</a>
             </div>
-            <form method="post" action="{{ url_for('mark_damage_repaired', id=item.id) }}" onsubmit="return confirm('Dieses Medium als repariert und wieder verfügbar markieren?');">
-              <button type="submit" class="btn btn-success btn-sm">Als repariert markieren</button>
-            </form>
+            <!-- Aufruf des Reparatur-Auswahl-Modals -->
+            <button type="button" class="btn btn-warning btn-sm" onclick="openRepairModal('{{ item.id }}', '{{ item.code }}')">Reparieren / Ersetzen</button>
           </td>
         </tr>
         {% endfor %}
@@ -407,6 +441,7 @@
   </div>
 </div>
 
+<!-- Modal: Rechnung für Schaden erstellen -->
 <div id="damage-invoice-modal" role="dialog" aria-modal="true" aria-labelledby="modal-title" style="display:none; position:fixed; inset:0; background:rgba(15,23,42,0.72); z-index:9999; padding:20px; overflow:auto;">
   <div style="max-width:760px; margin:40px auto; background: var(--ui-surface); border-radius:12px; padding:24px; box-shadow:0 20px 60px rgba(0,0,0,0.3);">
     <div style="display:flex; justify-content:space-between; align-items:center; gap:12px; margin-bottom:18px;">
@@ -464,15 +499,44 @@
   </div>
 </div>
 
+<!-- Neues Modal: Reparatur-Optionen (Reparieren, Ersetzen mit neuem Code_4, Löschen) -->
+<div id="repair-action-modal" role="dialog" aria-modal="true" aria-labelledby="repair-modal-title" style="display:none; position:fixed; inset:0; background:rgba(15,23,42,0.72); z-index:9999; padding:20px; overflow:auto;">
+  <div style="max-width:540px; margin:60px auto; background: var(--ui-surface); border-radius:12px; padding:24px; box-shadow:0 20px 60px rgba(0,0,0,0.3);">
+    <div style="display:flex; justify-content:space-between; align-items:center; gap:12px; margin-bottom:16px;">
+      <h2 id="repair-modal-title" style="margin:0; font-size: 1.3rem;">Medium-Bearbeitung nach Reparatur</h2>
+      <button type="button" class="btn btn-secondary btn-sm" onclick="closeRepairModal()">Schließen</button>
+    </div>
+    <p style="color: #666; margin-bottom: 18px; font-size: 0.95rem;">Wähle aus, wie mit diesem beschädigten Medium weiter verfahren werden soll:</p>
+
+    <form id="repair-action-form" method="post" action="">
+      <input type="hidden" name="action" id="repair-action-input" value="repair">
+
+      <div style="margin-bottom: 16px; display: none;" id="new-code-container">
+        <label for="modal-new-code-4" style="display:block; font-weight:700; margin-bottom:6px;">Neuer Code 4 (Inventarnummer / Barcode)</label>
+        <input type="text" id="modal-new-code-4" name="new_code_4" placeholder="Neuen Code 4 eingeben..." style="width:100%; padding:10px; border:1px solid #ddd; border-radius:6px;">
+      </div>
+
+      <div style="display: flex; flex-direction: column; gap: 10px;">
+        <button type="button" class="btn btn-success" onclick="submitRepairAction('repair')">Nur Reparieren (Wieder verfügbar machen)</button>
+        <button type="button" class="btn btn-primary" onclick="toggleReplaceMode()">Ersetzen (Neuen Code 4 zuweisen)</button>
+        <button type="submit" id="submit-replace-btn" class="btn btn-primary" style="display:none;" onclick="document.getElementById('repair-action-input').value='replace'; return confirm('Medium wirklich mit neuem Code aktualisieren?');">Änderung speichern</button>
+        <button type="submit" class="btn btn-danger" onclick="document.getElementById('repair-action-input').value='delete'; return confirm('Achtung: Soll dieses Medium wirklich gelöscht und der Bestand aktualisiert werden?');">Löschen & Bestand anpassen</button>
+      </div>
+    </form>
+  </div>
+</div>
+
 <script>
 (function() {
   const searchInput = document.getElementById('library-search');
+  const classFilter = document.getElementById('class-filter'); // NEU: Klassenfilter hinzugefügt
   const statusFilter = document.getElementById('loan-status-filter');
   const damageFilter = document.getElementById('damage-filter');
   const loanRows = Array.from(document.querySelectorAll('.loan-row'));
   const damagedRows = Array.from(document.querySelectorAll('.damaged-row'));
   const loansEmpty = document.getElementById('loans-empty');
   const damagedEmpty = document.getElementById('damaged-empty');
+
   const damageInvoiceModal = document.getElementById('damage-invoice-modal');
   const damageInvoiceForm = document.getElementById('damage-invoice-form');
   const damageInvoiceItem = document.getElementById('damage-invoice-item');
@@ -482,23 +546,100 @@
   const damageInvoiceReason = document.getElementById('damage-invoice-reason');
   const damageInvoiceReplaceBtn = document.getElementById('damage-invoice-replace-btn');
 
+  // NEU: Globale Sortier-Richtungsobjekte
+  let sortDirections = {};
+
+  // NEU: Sortier-Funktion
+  window.sortTable = function(tableId, columnIndex) {
+    const table = document.getElementById(tableId);
+    const tbody = table.tBodies[0];
+    const rows = Array.from(tbody.querySelectorAll("tr"));
+
+    if (rows.length === 0) return;
+
+    const sortKey = tableId + "-" + columnIndex;
+    if (!(sortKey in sortDirections)) {
+      sortDirections[sortKey] = true;
+    } else {
+      sortDirections[sortKey] = !sortDirections[sortKey];
+    }
+
+    const isAscending = sortDirections[sortKey];
+    const multiplier = isAscending ? 1 : -1;
+
+    // Pfeil im Header aktualisieren
+    const headers = table.querySelectorAll("th");
+    headers.forEach(th => {
+      if(th.innerHTML.includes('↕') || th.innerHTML.includes('▲') || th.innerHTML.includes('▼')) {
+        th.innerHTML = th.innerHTML.replace(/[↕▲▼]/g, '↕');
+      }
+    });
+    const currentTh = headers[columnIndex];
+    if (currentTh) {
+      currentTh.innerHTML = currentTh.innerHTML.replace('↕', isAscending ? '▲' : '▼');
+    }
+
+    // Zeilen sortieren
+    rows.sort((a, b) => {
+      const cellA = a.cells[columnIndex].textContent.trim();
+      const cellB = b.cells[columnIndex].textContent.trim();
+      return cellA.localeCompare(cellB, 'de', { numeric: true, sensitivity: 'base' }) * multiplier;
+    });
+
+    // Neu einfügen
+    rows.forEach(row => tbody.appendChild(row));
+  };
+
+
+  // Funktionen für das Reparatur-Modal
+  window.openRepairModal = function(itemId, currentCode) {
+    const modal = document.getElementById('repair-action-modal');
+    const form = document.getElementById('repair-action-form');
+    const codeContainer = document.getElementById('new-code-container');
+    const replaceBtn = document.getElementById('submit-replace-btn');
+
+    form.action = `/admin/items/${itemId}/resolve_repair`;
+
+    document.getElementById('repair-action-input').value = 'repair';
+    document.getElementById('modal-new-code-4').value = currentCode || '';
+    codeContainer.style.display = 'none';
+    replaceBtn.style.display = 'none';
+
+    modal.style.display = 'block';
+  };
+
+  window.closeRepairModal = function() {
+    document.getElementById('repair-action-modal').style.display = 'none';
+  };
+
+  window.toggleReplaceMode = function() {
+    const codeContainer = document.getElementById('new-code-container');
+    const replaceBtn = document.getElementById('submit-replace-btn');
+    document.getElementById('repair-action-input').value = 'replace';
+
+    codeContainer.style.display = 'block';
+    replaceBtn.style.display = 'block';
+    document.getElementById('modal-new-code-4').focus();
+  };
+
+  window.submitRepairAction = function(actionType) {
+    const form = document.getElementById('repair-action-form');
+    document.getElementById('repair-action-input').value = actionType;
+    if (confirm('Medium als regulär repariert markieren?')) {
+      form.submit();
+    }
+  };
+
   function openDamageReportPrompt(button) {
     const row = button.closest('.loan-row');
-    if (!row) {
-      return;
-    }
+    if (!row) return;
 
     const itemId = row.dataset.itemId || '';
-    const itemName = row.dataset.itemName || 'Bibliotheksmedium';
     const noteInput = prompt('Schadensmeldung für dieses Bibliotheksmedium:\nNotiz zum Schaden (optional):', '');
 
-    if (noteInput === null) {
-      return;
-    }
+    if (noteInput === null) return;
 
     const description = noteInput.trim() || 'Schaden erneut gemeldet';
-
-    // Visuelles Feedback: Button deaktivieren und Text ändern
     const originalText = button.textContent;
     button.disabled = true;
     button.textContent = 'Speichere...';
@@ -509,7 +650,6 @@
       body: JSON.stringify({ description })
     })
       .then(async response => {
-        // Robustes JSON-Parsing (verhindert Absturz, falls der Server kein JSON zurückgibt)
         const data = await response.json().catch(() => ({}));
         if (!response.ok || !data.success) {
           throw new Error(data.message || 'Fehler beim Speichern der Schadensmeldung.');
@@ -519,18 +659,14 @@
       .then(data => {
         if (confirm('Schaden gespeichert. Soll direkt eine Rechnung erstellt werden?')) {
           openDamageInvoiceModal(row, description);
-          // Button wieder zurücksetzen, da die Seite nicht neu geladen wird
           button.disabled = false;
           button.textContent = originalText;
           return;
         }
-
-        // Bei "Abbrechen" im Confirm -> Neuladen der Tabelle
         window.location.reload();
       })
       .catch(error => {
         alert(error.message || 'Ein unbekannter Fehler ist aufgetreten.');
-        // Fehlerbehandlung: Button wieder aktiv schalten
         button.disabled = false;
         button.textContent = originalText;
       });
@@ -539,17 +675,12 @@
   window.openDamageReportPrompt = openDamageReportPrompt;
 
   function openDamageInvoiceModal(row, description) {
-    if (!damageInvoiceModal || !damageInvoiceForm) {
-      console.error("Modal oder Formular nicht gefunden.");
-      return;
-    }
+    if (!damageInvoiceModal || !damageInvoiceForm) return;
 
     const borrowId = row.dataset.borrowId || '';
     const itemName = row.dataset.itemName || '';
     const borrower = row.dataset.userName || '';
     const itemCode = row.dataset.itemCode || '';
-
-    // KORREKTUR: Jetzt greifen wir auf das richtige dataset-Attribut zu
     const itemCost = row.dataset.itemCost || '';
 
     damageInvoiceForm.action = "{{ url_for('admin_create_invoice', borrow_id='__BORROW_ID__') }}".replace('__BORROW_ID__', borrowId);
@@ -557,20 +688,14 @@
     damageInvoiceItem.value = itemName;
     damageInvoiceBorrower.value = borrower;
     damageInvoiceCode.value = itemCode;
-
-    // Feld zunächst leeren, damit der Ersetzen-Button genutzt werden kann
     damageInvoiceAmount.value = '';
 
-    // Original-Preis im Button als data-Attribut hinterlegen
     if (damageInvoiceReplaceBtn) {
       damageInvoiceReplaceBtn.dataset.acquisition_costs = String(itemCost).replace(' EUR', '').trim();
     }
 
     damageInvoiceReason.value = description || `Schaden gemeldet für ${itemName}`;
-
     damageInvoiceModal.style.display = 'block';
-
-    // Accessibility: Fokus ins erste aktivierbare Feld setzen
     damageInvoiceAmount.focus();
   }
 
@@ -580,7 +705,6 @@
     }
   }
 
-  // Event-Listener für den Ersetzen-Button
   if (damageInvoiceReplaceBtn) {
     damageInvoiceReplaceBtn.addEventListener('click', function() {
       if (this.dataset.acquisition_costs) {
@@ -600,20 +724,26 @@
     });
   }
 
+  // NEU: Kombinierte Filter-Funktion (Suche + Status + Schaden + Klasse)
   function applyFilters() {
     const search = (searchInput.value || '').trim().toLowerCase();
     const status = statusFilter.value;
     const damage = damageFilter.value;
+    const klasse = classFilter.value; // NEU
 
     let visibleLoans = 0;
     loanRows.forEach(row => {
       const haystack = row.dataset.search || '';
       const rowStatus = row.dataset.status || '';
+      const rowKlasse = row.dataset.klasse || ''; // NEU
       const hasDamage = row.dataset.hasDamage === '1';
+
       const searchMatch = !search || haystack.includes(search);
       const statusMatch = !status || rowStatus === status;
+      const classMatch = klasse === 'all' || rowKlasse === klasse; // NEU
       const damageMatch = damage === 'all' || (damage === 'damage' && hasDamage) || (damage === 'clean' && !hasDamage);
-      const show = searchMatch && statusMatch && damageMatch;
+
+      const show = searchMatch && statusMatch && classMatch && damageMatch; // NEU
       row.style.display = show ? '' : 'none';
       if (show) visibleLoans++;
     });
@@ -624,10 +754,17 @@
       const haystack = row.dataset.search || '';
       const rowStatus = row.dataset.status || '';
       const hasDamage = row.dataset.hasDamage === '1';
+
       const searchMatch = !search || haystack.includes(search);
       const statusMatch = !status || rowStatus === status || status === '';
       const damageMatch = damage === 'all' || (damage === 'damage' && hasDamage) || (damage === 'clean' && !hasDamage);
-      const show = searchMatch && statusMatch && damageMatch;
+
+      // Defekte-Medien-Tabelle hat keine verknüpfte "Klasse", deshalb blenden wir sie nur bei Klassen-Filter "all" ein,
+      // oder wenn gar nicht nach Klasse gefiltert wird, damit sie nicht verschwindet.
+      // Falls sie bei aktiver Klassensuche komplett verschwinden soll, passe die Bedingung an:
+      const classMatch = klasse === 'all';
+
+      const show = searchMatch && statusMatch && damageMatch && classMatch;
       row.style.display = show ? '' : 'none';
       if (show) visibleDamaged++;
     });
@@ -635,6 +772,7 @@
   }
 
   searchInput.addEventListener('input', applyFilters);
+  classFilter.addEventListener('change', applyFilters); // NEU
   statusFilter.addEventListener('change', applyFilters);
   damageFilter.addEventListener('change', applyFilters);
   applyFilters();

Web/templates/library_item_invoices.html

@@ -1,6 +1,6 @@
 {% extends "base.html" %}
 
-{% block title %}Rechnungen Element - {{ APP_VERSION }}{% endblock %}
+{% block title %}Rechnungs- & Schadenshistorie - {{ APP_VERSION }}{% endblock %}
 
 {% block content %}
 <style>
@@ -39,6 +39,14 @@
     flex-wrap: wrap;
   }
 
+  .section-header {
+    font-size: 1.25rem;
+    font-weight: 700;
+    color: #1e293b;
+    margin: 36px 0 16px 0;
+    padding-left: 4px;
+  }
+
   .invoice-card {
     background: var(--ui-surface);
     border: 1px solid #e2e8f0;
@@ -115,7 +123,7 @@
 
 <div class="invoice-history-shell">
   <div class="invoice-history-head">
-    <h1>Rechnungshistorie pro Element</h1>
+    <h1>Rechnungs- & Schadenshistorie pro Element</h1>
     <div class="head-meta">
       <span><strong>Element:</strong> {{ item.name or '—' }}</span>
       <span><strong>Code:</strong> {{ item.code or '—' }}</span>
@@ -124,10 +132,12 @@
     </div>
     <div class="head-actions">
       <a class="btn btn-outline-secondary" href="{{ url_for('library_loans_admin') }}">Zur Bibliotheks-Ausleihenverwaltung</a>
-      <a class="btn btn-secondary" href="{{ url_for('library_admin') }}">Bibliothek öffnen</a>
+      <a class="btn btn-secondary" href="{{ url_for('library_view') }}">Bibliothek öffnen</a>
     </div>
   </div>
 
+  <!-- BEREICH: RECHNUNGEN -->
+  <h2 class="section-header">Ausgestellte Rechnungen</h2>
   <div class="invoice-card">
     {% if invoices %}
     <table class="invoice-table">
@@ -137,7 +147,7 @@
           <th>Betrag</th>
           <th>Ausleihe</th>
           <th>Status</th>
-          <th>Schaden</th>
+          <th>Schaden / Grund</th>
           <th>Aktion</th>
         </tr>
       </thead>
@@ -184,5 +194,50 @@
       <div class="empty-state">Für dieses Element wurden noch keine Rechnungen gespeichert.</div>
     {% endif %}
   </div>
+
+  <!-- BEREICH: SCHÄDEN -->
+  <h2 class="section-header">Gemeldete Schäden</h2>
+  <div class="invoice-card">
+    {% if damages %}
+    <table class="invoice-table">
+      <thead>
+        <tr>
+          <th>Datum</th>
+          <th>Quelle</th>
+          <th>Nutzer / Verursacher</th>
+          <th>Beschreibung</th>
+          <th>Status</th>
+        </tr>
+      </thead>
+      <tbody>
+        {% for row in damages %}
+        <tr>
+          <td>
+            <div class="muted">{{ row.date }}</div>
+          </td>
+          <td>
+            <div class="mono">{{ row.source }}</div>
+            {% if row.borrow_id %}
+              <div class="muted" style="font-size: 0.8rem;">ID: <span title="{{ row.borrow_id }}">{{ row.borrow_id[:6] }}...</span></div>
+            {% endif %}
+          </td>
+          <td>{{ row.user }}</td>
+          <td>{{ row.description }}</td>
+          <td>
+            <!-- Einfache Logik, um bei reparierten Objekten einen grünen Badge zu zeigen -->
+            {% if row.status|lower in ['repariert', 'erledigt', 'geschlossen', 'bezahlt'] %}
+              <span class="badge-pill badge-completed">{{ row.status }}</span>
+            {% else %}
+              <span class="badge-pill badge-open">{{ row.status }}</span>
+            {% endif %}
+          </td>
+        </tr>
+        {% endfor %}
+      </tbody>
+    </table>
+    {% else %}
+      <div class="empty-state">Für dieses Element wurden bislang keine Schäden erfasst.</div>
+    {% endif %}
+  </div>
 </div>
-{% endblock %}
+{% endblock %}