Tests and helpers

ui/kivy.py

@@ -1,6 +1,7 @@
-# type: ignore
+## type: ignore
 import kivy
 from kivy.app import App
+from kivy.graphics import Color, RoundedRectangle
 from kivy.uix.screenmanager import ScreenManager, Screen, SlideTransition
 from kivy.uix.boxlayout import BoxLayout
 from kivy.uix.gridlayout import GridLayout
@@ -10,7 +11,7 @@ from kivy.uix.button import Button
 from kivy.uix.textinput import TextInput
 from kivy.uix.popup import Popup
 from kivy.core.window import Window
-from kivy.graphics import Color, RoundedRectangle
+from utils.helpers import format_currency, format_date, validate_pin, parse_price
 
 
 class RoundedButton(Button):
@@ -104,45 +105,57 @@ class ConfirmPopup(Popup):
 
 
 class NumpadPopup(Popup):
-    def __init__(self, title, is_password=False, is_float=False, on_submit=None, **kwargs):
+    def __init__(
+        self, title, is_password=False, is_float=False, on_submit=None, **kwargs
+    ):
         self.is_password = is_password
         self.is_float = is_float
         self.on_submit = on_submit
         self.entered_text = ""
 
-        content = BoxLayout(orientation='vertical', padding=15, spacing=15)
+        content = BoxLayout(orientation="vertical", padding=15, spacing=15)
 
         self.display = Label(
             text="PIN eingeben:" if is_password else "Betrag eingeben:",
-            font_size='20sp',
+            font_size="20sp",
             bold=True,
             size_hint_y=0.15,
-            halign='center',
-            valign='middle'
+            halign="center",
+            valign="middle",
         )
-        self.display.bind(size=self.display.setter('text_size'))
+        self.display.bind(size=self.display.setter("text_size"))
         content.add_widget(self.display)
 
         grid = GridLayout(cols=3, spacing=10, size_hint_y=0.6)
 
         buttons = [
-            '1', '2', '3',
-            '4', '5', '6',
-            '7', '8', '9',
-            ',' if is_float else 'C', '0', '⌫'
+            "1",
+            "2",
+            "3",
+            "4",
+            "5",
+            "6",
+            "7",
+            "8",
+            "9",
+            "," if is_float else "C",
+            "0",
+            "⌫",
         ]
 
         for btn_text in buttons:
             btn = RoundedButton(
                 text=btn_text,
-                btn_color=[0.15, 0.15, 0.17, 1] if btn_text in ['C', '⌫', ','] else [0.0, 0.65, 0.57, 1]
+                btn_color=[0.15, 0.15, 0.17, 1]
+                if btn_text in ["C", "⌫", ","]
+                else [0.0, 0.65, 0.57, 1],
             )
             btn.bind(on_release=self.on_key_press)
             grid.add_widget(btn)
 
         content.add_widget(grid)
 
-        actions = BoxLayout(orientation='horizontal', spacing=10, size_hint_y=0.25)
+        actions = BoxLayout(orientation="horizontal", spacing=10, size_hint_y=0.25)
         ok_btn = RoundedButton(text="OK", btn_color=[0.0, 0.65, 0.57, 1])
         cancel_btn = RoundedButton(text="Abbrechen", btn_color=[0.25, 0.25, 0.28, 1])
 
@@ -154,10 +167,10 @@ class NumpadPopup(Popup):
             title=title,
             content=content,
             size_hint=(0.85, 0.75),
-            title_align='center',
-            title_size='18sp',
+            title_align="center",
+            title_size="18sp",
             background_color=[0.08, 0.08, 0.09, 0.95],
-            **kwargs
+            **kwargs,
         )
 
         ok_btn.bind(on_release=self.submit)
@@ -165,20 +178,22 @@ class NumpadPopup(Popup):
 
     def on_key_press(self, instance):
         key = instance.text
-        if key == '⌫':
+        if key == "⌫":
             self.entered_text = self.entered_text[:-1]
-        elif key == 'C':
+        elif key == "C":
             self.entered_text = ""
-        elif key == ',':
-            if ',' not in self.entered_text:
-                self.entered_text += ','
+        elif key == ",":
+            if "," not in self.entered_text:
+                self.entered_text += ","
         else:
             self.entered_text += key
         self.update_display()
 
     def update_display(self):
         if not self.entered_text:
-            self.display.text = "PIN eingeben:" if self.is_password else "Betrag eingeben:"
+            self.display.text = (
+                "PIN eingeben:" if self.is_password else "Betrag eingeben:"
+            )
         else:
             if self.is_password:
                 self.display.text = "*" * len(self.entered_text)
@@ -197,34 +212,36 @@ class KeyboardPopup(Popup):
         self.on_submit = on_submit
         self.entered_text = ""
 
-        content = BoxLayout(orientation='vertical', padding=15, spacing=15)
+        content = BoxLayout(orientation="vertical", padding=15, spacing=15)
 
         self.display = Label(
             text="Eingeben:" if not is_password else "****",
-            font_size='20sp',
+            font_size="20sp",
             bold=True,
             size_hint_y=0.15,
-            halign='center',
-            valign='middle'
+            halign="center",
+            valign="middle",
         )
-        self.display.bind(size=self.display.setter('text_size'))
+        self.display.bind(size=self.display.setter("text_size"))
         content.add_widget(self.display)
 
-        kbd_layout = BoxLayout(orientation='vertical', spacing=5, size_hint_y=0.6)
+        kbd_layout = BoxLayout(orientation="vertical", spacing=5, size_hint_y=0.6)
 
         rows = [
-            ['1', '2', '3', '4', '5', '6', '7', '8', '9', '0'],
-            ['q', 'w', 'e', 'r', 't', 'z', 'u', 'i', 'o', 'p'],
-            ['a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l'],
-            ['y', 'x', 'c', 'v', 'b', 'n', 'm', '⌫', 'C']
+            ["1", "2", "3", "4", "5", "6", "7", "8", "9", "0"],
+            ["q", "w", "e", "r", "t", "z", "u", "i", "o", "p"],
+            ["a", "s", "d", "f", "g", "h", "j", "k", "l"],
+            ["y", "x", "c", "v", "b", "n", "m", "⌫", "C"],
         ]
 
         for row in rows:
-            row_box = BoxLayout(orientation='horizontal', spacing=5)
+            row_box = BoxLayout(orientation="horizontal", spacing=5)
             for char in row:
                 btn = RoundedButton(
                     text=char,
-                    btn_color=[0.15, 0.15, 0.17, 1] if char in ['C', '⌫'] else [0.0, 0.65, 0.57, 1]
+                    btn_color=[0.15, 0.15, 0.17, 1]
+                    if char in ["C", "⌫"]
+                    else [0.0, 0.65, 0.57, 1],
                 )
                 btn.bind(on_release=self.on_key_press)
                 row_box.add_widget(btn)
@@ -232,7 +249,7 @@ class KeyboardPopup(Popup):
 
         content.add_widget(kbd_layout)
 
-        actions = BoxLayout(orientation='horizontal', spacing=10, size_hint_y=0.25)
+        actions = BoxLayout(orientation="horizontal", spacing=10, size_hint_y=0.25)
         ok_btn = RoundedButton(text="OK", btn_color=[0.0, 0.65, 0.57, 1])
         cancel_btn = RoundedButton(text="Abbrechen", btn_color=[0.25, 0.25, 0.28, 1])
 
@@ -244,10 +261,10 @@ class KeyboardPopup(Popup):
             title=title,
             content=content,
             size_hint=(0.95, 0.8),
-            title_align='center',
-            title_size='18sp',
+            title_align="center",
+            title_size="18sp",
             background_color=[0.08, 0.08, 0.09, 0.95],
-            **kwargs
+            **kwargs,
         )
 
         ok_btn.bind(on_release=self.submit)
@@ -255,9 +272,9 @@ class KeyboardPopup(Popup):
 
     def on_key_press(self, instance):
         key = instance.text
-        if key == '⌫':
+        if key == "⌫":
             self.entered_text = self.entered_text[:-1]
-        elif key == 'C':
+        elif key == "C":
             self.entered_text = ""
         else:
             self.entered_text += key
@@ -338,7 +355,7 @@ class AdjustDebtPopup(Popup):
                 title="Betrag eingeben",
                 is_password=False,
                 is_float=True,
-                on_submit=self.on_amount_submitted
+                on_submit=self.on_amount_submitted,
             )
             popup.open()
 
@@ -362,16 +379,16 @@ class CreateUserPopup(Popup):
     def __init__(self, on_create, **kwargs):
         self.on_create = on_create
 
-        content = BoxLayout(orientation='vertical', padding=15, spacing=15)
+        content = BoxLayout(orientation="vertical", padding=15, spacing=15)
 
         info = Label(
             text="Name des neuen Benutzers eingeben:",
-            font_size='16sp',
+            font_size="16sp",
             size_hint_y=0.25,
-            halign='center',
-            valign='middle'
+            halign="center",
+            valign="middle",
         )
-        info.bind(size=info.setter('text_size'))
+        info.bind(size=info.setter("text_size"))
         content.add_widget(info)
 
         self.name_input = TextInput(
@@ -384,7 +401,7 @@ class CreateUserPopup(Popup):
             foreground_color=[1, 1, 1, 1],
             cursor_color=[1, 1, 1, 1],
             size_hint_y=0.3,
-            padding=[10, 10]
+            padding=[10, 10],
         )
         self.name_input.bind(focus=self.trigger_keyboard)
         content.add_widget(self.name_input)
@@ -417,7 +434,7 @@ class CreateUserPopup(Popup):
             popup = KeyboardPopup(
                 title="Name eingeben",
                 is_password=False,
-                on_submit=self.on_name_submitted
+                on_submit=self.on_name_submitted,
             )
             popup.open()
 
@@ -435,21 +452,23 @@ class CreateUserPopup(Popup):
 
 
 class EditUserPopup(Popup):
-    def __init__(self, user_id, current_name, current_pin, on_save, on_delete, **kwargs):
+    def __init__(
+        self, user_id, current_name, current_pin, on_save, on_delete, **kwargs
+    ):
         self.user_id = user_id
         self.on_save = on_save
         self.on_delete = on_delete
 
-        content = BoxLayout(orientation='vertical', padding=15, spacing=15)
+        content = BoxLayout(orientation="vertical", padding=15, spacing=15)
 
         info = Label(
             text="Benutzer bearbeiten:",
-            font_size='16sp',
+            font_size="16sp",
             size_hint_y=0.15,
-            halign='center',
-            valign='middle'
+            halign="center",
+            valign="middle",
         )
-        info.bind(size=info.setter('text_size'))
+        info.bind(size=info.setter("text_size"))
         content.add_widget(info)
 
         content.add_widget(Label(text="Name:", size_hint_y=0.08, halign="left"))
@@ -463,7 +482,7 @@ class EditUserPopup(Popup):
             foreground_color=[1, 1, 1, 1],
             cursor_color=[1, 1, 1, 1],
             size_hint_y=0.15,
-            padding=[10, 10]
+            padding=[10, 10],
         )
         self.name_input.bind(focus=self.trigger_keyboard)
         content.add_widget(self.name_input)
@@ -479,7 +498,7 @@ class EditUserPopup(Popup):
             foreground_color=[1, 1, 1, 1],
             cursor_color=[1, 1, 1, 1],
             size_hint_y=0.15,
-            padding=[10, 10]
+            padding=[10, 10],
         )
         self.pin_input.bind(focus=self.trigger_numpad)
         content.add_widget(self.pin_input)
@@ -515,7 +534,7 @@ class EditUserPopup(Popup):
             popup = KeyboardPopup(
                 title="Name eingeben",
                 is_password=False,
-                on_submit=self.on_name_submitted
+                on_submit=self.on_name_submitted,
             )
             popup.open()
 
@@ -526,9 +545,7 @@ class EditUserPopup(Popup):
         if value:
             instance.focus = False
             popup = NumpadPopup(
-                title="PIN eingeben",
-                is_password=False,
-                on_submit=self.on_pin_submitted
+                title="PIN eingeben", is_password=False, on_submit=self.on_pin_submitted
             )
             popup.open()
 
@@ -543,7 +560,9 @@ class EditUserPopup(Popup):
             err.open()
             return
         if len(pin) < 4:
-            err = MessagePopup(title="Fehler", message="Die PIN must mindestens 4 Ziffern lang sein!")
+            err = MessagePopup(
+                title="Fehler", message="Die PIN must mindestens 4 Ziffern lang sein!"
+            )
             err.open()
             return
         self.dismiss()
@@ -558,16 +577,16 @@ class CreateItemPopup(Popup):
     def __init__(self, on_create, **kwargs):
         self.on_create = on_create
 
-        content = BoxLayout(orientation='vertical', padding=15, spacing=15)
+        content = BoxLayout(orientation="vertical", padding=15, spacing=15)
 
         info = Label(
             text="Neuen Artikel hinzufügen:",
-            font_size='16sp',
+            font_size="16sp",
             size_hint_y=0.15,
-            halign='center',
-            valign='middle'
+            halign="center",
+            valign="middle",
         )
-        info.bind(size=info.setter('text_size'))
+        info.bind(size=info.setter("text_size"))
         content.add_widget(info)
 
         content.add_widget(Label(text="Name:", size_hint_y=0.08, halign="left"))
@@ -581,7 +600,7 @@ class CreateItemPopup(Popup):
             foreground_color=[1, 1, 1, 1],
             cursor_color=[1, 1, 1, 1],
             size_hint_y=0.15,
-            padding=[10, 10]
+            padding=[10, 10],
         )
         self.name_input.bind(focus=self.trigger_keyboard)
         content.add_widget(self.name_input)
@@ -597,7 +616,7 @@ class CreateItemPopup(Popup):
             foreground_color=[1, 1, 1, 1],
             cursor_color=[1, 1, 1, 1],
             size_hint_y=0.15,
-            padding=[10, 10]
+            padding=[10, 10],
         )
         self.price_input.bind(focus=self.trigger_numpad)
         content.add_widget(self.price_input)
@@ -630,7 +649,7 @@ class CreateItemPopup(Popup):
             popup = KeyboardPopup(
                 title="Artikelname eingeben",
                 is_password=False,
-                on_submit=self.on_name_submitted
+                on_submit=self.on_name_submitted,
             )
             popup.open()
 
@@ -644,7 +663,7 @@ class CreateItemPopup(Popup):
                 title="Preis eingeben",
                 is_password=False,
                 is_float=True,
-                on_submit=self.on_price_submitted
+                on_submit=self.on_price_submitted,
             )
             popup.open()
 
@@ -672,21 +691,23 @@ class CreateItemPopup(Popup):
 
 
 class EditItemPopup(Popup):
-    def __init__(self, item_id, current_name, current_price, on_save, on_delete, **kwargs):
+    def __init__(
+        self, item_id, current_name, current_price, on_save, on_delete, **kwargs
+    ):
         self.item_id = item_id
         self.on_save = on_save
         self.on_delete = on_delete
 
-        content = BoxLayout(orientation='vertical', padding=15, spacing=15)
+        content = BoxLayout(orientation="vertical", padding=15, spacing=15)
 
         info = Label(
             text="Artikel bearbeiten:",
-            font_size='16sp',
+            font_size="16sp",
             size_hint_y=0.15,
-            halign='center',
-            valign='middle'
+            halign="center",
+            valign="middle",
         )
-        info.bind(size=info.setter('text_size'))
+        info.bind(size=info.setter("text_size"))
         content.add_widget(info)
 
         content.add_widget(Label(text="Name:", size_hint_y=0.08, halign="left"))
@@ -700,7 +721,7 @@ class EditItemPopup(Popup):
             foreground_color=[1, 1, 1, 1],
             cursor_color=[1, 1, 1, 1],
             size_hint_y=0.15,
-            padding=[10, 10]
+            padding=[10, 10],
         )
         self.name_input.bind(focus=self.trigger_keyboard)
         content.add_widget(self.name_input)
@@ -716,7 +737,7 @@ class EditItemPopup(Popup):
             foreground_color=[1, 1, 1, 1],
             cursor_color=[1, 1, 1, 1],
             size_hint_y=0.15,
-            padding=[10, 10]
+            padding=[10, 10],
         )
         self.price_input.bind(focus=self.trigger_numpad)
         content.add_widget(self.price_input)
@@ -752,7 +773,7 @@ class EditItemPopup(Popup):
             popup = KeyboardPopup(
                 title="Artikelname eingeben",
                 is_password=False,
-                on_submit=self.on_name_submitted
+                on_submit=self.on_name_submitted,
             )
             popup.open()
 
@@ -766,7 +787,7 @@ class EditItemPopup(Popup):
                 title="Preis eingeben",
                 is_password=False,
                 is_float=True,
-                on_submit=self.on_price_submitted
+                on_submit=self.on_price_submitted,
             )
             popup.open()
 
@@ -847,7 +868,7 @@ class TransactionRow(BoxLayout):
         self.bind(pos=self.update_rect, size=self.update_rect)
 
         date_lbl = Label(
-            text=date[:10],
+            text=format_date(date),
             font_size="14sp",
             size_hint_x=0.25,
             halign="left",
@@ -1015,27 +1036,29 @@ class UserSelectionScreen(StyledScreen):
             popup = NumpadPopup(
                 title=f"PIN einrichten: {user.name}",
                 is_password=True,
-                on_submit=lambda pin: self.setup_pin_confirm(user_id, pin)
+                on_submit=lambda pin: self.setup_pin_confirm(user_id, pin),
             )
             popup.open()
         else:
             popup = NumpadPopup(
                 title=f"PIN eingeben: {user.name}",
                 is_password=True,
-                on_submit=lambda pin: self.verify_pin(user_id, pin)
+                on_submit=lambda pin: self.verify_pin(user_id, pin),
             )
             popup.open()
 
     def setup_pin_confirm(self, user_id, pin):
         if len(pin) < 4:
-            err = MessagePopup(title="Fehler", message="Die PIN muss mindestens 4 Ziffern lang sein!")
+            err = MessagePopup(
+                title="Fehler", message="Die PIN muss mindestens 4 Ziffern lang sein!"
+            )
             err.open()
             return
 
         popup = NumpadPopup(
             title="PIN bestätigen",
             is_password=True,
-            on_submit=lambda confirm_pin: self.save_new_pin(user_id, pin, confirm_pin)
+            on_submit=lambda confirm_pin: self.save_new_pin(user_id, pin, confirm_pin),
         )
         popup.open()
 
@@ -1048,7 +1071,7 @@ class UserSelectionScreen(StyledScreen):
         app = App.get_running_app()
         app.tracker.set_user_pin(user_id, pin)
         app.current_user = user_id
-        self.manager.current = 'user_menu'
+        self.manager.current = "user_menu"
 
     def verify_pin(self, user_id, pin):
         app = App.get_running_app()
@@ -1056,7 +1079,7 @@ class UserSelectionScreen(StyledScreen):
 
         if user.pin == pin:
             app.current_user = user_id
-            self.manager.current = 'user_menu'
+            self.manager.current = "user_menu"
         else:
             err = MessagePopup(title="Fehler", message="Falsche PIN!")
             err.open()
@@ -1125,7 +1148,7 @@ class UserMenuScreen(StyledScreen):
         popup = NumpadPopup(
             title="Aktuelle PIN eingeben",
             is_password=True,
-            on_submit=lambda pin: self.verify_current_pin(pin)
+            on_submit=lambda pin: self.verify_current_pin(pin),
         )
         popup.open()
 
@@ -1137,7 +1160,7 @@ class UserMenuScreen(StyledScreen):
             popup = NumpadPopup(
                 title="Neue PIN eingeben",
                 is_password=True,
-                on_submit=lambda new_pin: self.setup_new_pin(new_pin)
+                on_submit=lambda new_pin: self.setup_new_pin(new_pin),
             )
             popup.open()
         else:
@@ -1146,14 +1169,16 @@ class UserMenuScreen(StyledScreen):
 
     def setup_new_pin(self, new_pin):
         if len(new_pin) < 4:
-            err = MessagePopup(title="Fehler", message="Die PIN muss mindestens 4 Ziffern lang sein!")
+            err = MessagePopup(
+                title="Fehler", message="Die PIN muss mindestens 4 Ziffern lang sein!"
+            )
             err.open()
             return
 
         popup = NumpadPopup(
             title="Neue PIN bestätigen",
             is_password=True,
-            on_submit=lambda confirm_pin: self.save_changed_pin(new_pin, confirm_pin)
+            on_submit=lambda confirm_pin: self.save_changed_pin(new_pin, confirm_pin),
         )
         popup.open()
 
@@ -1374,7 +1399,7 @@ class AdminPasswordScreen(StyledScreen):
             popup = KeyboardPopup(
                 title="Admin-Passwort eingeben",
                 is_password=True,
-                on_submit=self.on_password_submitted
+                on_submit=self.on_password_submitted,
             )
             popup.open()
 
@@ -1494,7 +1519,6 @@ class AdminMenuScreen(StyledScreen):
         self.manager.current = "main_menu"
 
 
-
 class AdminAdjustDebtScreen(StyledScreen):
     def __init__(self, **kwargs):
         super(AdminAdjustDebtScreen, self).__init__(
@@ -1666,8 +1690,8 @@ class AdminHistoryScreen(StyledScreen):
             user = app.tracker.get_user_by_id(t.user_id)
             user_name = user.name if user else "Gelöschter Benutzer"
 
-            if t.item_id == "adjustment":
-                item_name = "Anpassung"
+            if t.item_id in ("adjustment", "Abbuchung"):
+                item_name = "Abbuchung"
             else:
                 item = app.tracker.get_items().get(t.item_id)
                 item_name = item.name if item else "Gelöschter Artikel"
@@ -1695,7 +1719,7 @@ class AdminManageUsersScreen(StyledScreen):
             size_hint=(0.7, None),
             height="50dp",
             pos_hint={"center_x": 0.5},
-            btn_color=[0.0, 0.65, 0.57, 1]
+            btn_color=[0.0, 0.65, 0.57, 1],
         )
         btn_add.bind(on_release=self.open_create_user_popup)
         self.content_layout.add_widget(btn_add)
@@ -1738,6 +1762,7 @@ class AdminManageUsersScreen(StyledScreen):
 
     def create_user(self, name):
         import uuid
+
         app = App.get_running_app()
         user_id = f"user_{uuid.uuid4().hex[:8]}"
         res = app.tracker.add_user(user_id, name)
@@ -1745,15 +1770,12 @@ class AdminManageUsersScreen(StyledScreen):
         if res["status"] == "success":
             msg = MessagePopup(
                 title="Erfolg",
-                message=f"Benutzer {name} erfolgreich erstellt!\n(Standard-PIN: 4242)"
+                message=f"Benutzer {name} erfolgreich erstellt!\n(Standard-PIN: 4242)",
             )
             msg.open()
             self.refresh_users()
         else:
-            msg = MessagePopup(
-                title="Fehler",
-                message=f"Fehler: {res['message']}"
-            )
+            msg = MessagePopup(title="Fehler", message=f"Fehler: {res['message']}")
             msg.open()
 
     def open_edit_user_popup(self, user_id, name, pin):
@@ -1762,7 +1784,7 @@ class AdminManageUsersScreen(StyledScreen):
             current_name=name,
             current_pin=pin,
             on_save=self.save_user,
-            on_delete=self.confirm_delete_user
+            on_delete=self.confirm_delete_user,
         )
         popup.open()
 
@@ -1785,7 +1807,7 @@ class AdminManageUsersScreen(StyledScreen):
         popup = ConfirmPopup(
             title="Benutzer löschen",
             message=f"Möchtest du den Benutzer {user.name} wirklich unwiderruflich löschen?",
-            on_confirm=lambda: self.delete_user(user_id)
+            on_confirm=lambda: self.delete_user(user_id),
         )
         popup.open()
 
@@ -1815,7 +1837,7 @@ class AdminManageItemsScreen(StyledScreen):
             size_hint=(0.7, None),
             height="50dp",
             pos_hint={"center_x": 0.5},
-            btn_color=[0.0, 0.65, 0.57, 1]
+            btn_color=[0.0, 0.65, 0.57, 1],
         )
         btn_add.bind(on_release=self.open_create_item_popup)
         self.content_layout.add_widget(btn_add)
@@ -1858,12 +1880,15 @@ class AdminManageItemsScreen(StyledScreen):
 
     def create_item(self, name, price):
         import uuid
+
         app = App.get_running_app()
         item_id = f"item_{uuid.uuid4().hex[:8]}"
         res = app.tracker.add_item(item_id, name, price)
 
         if res["status"] == "success":
-            msg = MessagePopup(title="Erfolg", message=f"Artikel {name} erfolgreich erstellt!")
+            msg = MessagePopup(
+                title="Erfolg", message=f"Artikel {name} erfolgreich erstellt!"
+            )
             msg.open()
             self.refresh_items()
         else:
@@ -1876,7 +1901,7 @@ class AdminManageItemsScreen(StyledScreen):
             current_name=name,
             current_price=price,
             on_save=self.save_item,
-            on_delete=self.confirm_delete_item
+            on_delete=self.confirm_delete_item,
         )
         popup.open()
 
@@ -1900,7 +1925,7 @@ class AdminManageItemsScreen(StyledScreen):
         popup = ConfirmPopup(
             title="Artikel löschen",
             message=f"Möchtest du den Artikel {item.name} wirklich unwiderruflich löschen?",
-            on_confirm=lambda: self.delete_item(item_id)
+            on_confirm=lambda: self.delete_item(item_id),
         )
         popup.open()
 
@@ -1946,7 +1971,6 @@ class KuehlschrankApp(App):
         return sm
 
 
-
 class KivyUI:
     def __init__(self, tracker):
         self.tracker = tracker