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screens/login_screen.py

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+from kivy.uix.screenmanager import Screen
+from kivy.uix.boxlayout import BoxLayout
+from kivy.uix.label import Label
+from kivy.uix.button import Button
+from kivy.uix.popup import Popup
+from kivy.uix.image import Image
+from kivy.uix.behaviors import ButtonBehavior
+from kivy.clock import Clock
+import os
+import json
+from config import RESOURCES_FOLDER, CREDENTIALS_FILE
+from utils import encrypt_data, decrypt_data, check_server_settings, save_server_settings, test_connection
+
+
+class LoginScreen(Screen):
+    def login(self):
+        username = self.ids.username_input.text.strip()
+        password = self.ids.username_input.text.strip()
+
+        if not username or not password:
+            self.manager.get_screen("home").ids.result_label.text = "Please fill in all fields."
+            return
+
+        credentials = {"username": username, "password": password}
+        encrypted_data = encrypt_data(json.dumps(credentials))
+        with open(CREDENTIALS_FILE, "wb") as file:
+            file.write(encrypted_data)
+
+        self.manager.current = "home"