feat: implement message service

Signed-off-by: Dominik Willner <th33xitus@gmail.com>

kiauh/core/menus/base_menu.py

@@ -19,6 +19,7 @@ from typing import Dict, Type
 
 from core.logger import Logger
 from core.menus import FooterType, Option
+from core.services.message_service import MessageService
 from core.spinner import Spinner
 from core.types.color import Color
 from utils.input_utils import get_selection_input
@@ -123,6 +124,8 @@ class BaseMenu(metaclass=PostInitCaller):
     help_menu: Type[BaseMenu] | None = None
     footer_type: FooterType = FooterType.BACK
 
+    message_service = MessageService()
+
     def __init__(self, **kwargs) -> None:
         if type(self) is BaseMenu:
             raise NotImplementedError("BaseMenu cannot be instantiated directly.")
@@ -207,8 +210,11 @@ class BaseMenu(metaclass=PostInitCaller):
             raise NotImplementedError("FooterType not correctly implemented!")
 
     def __display_menu(self) -> None:
+        self.message_service.display_message()
+
         if self.header:
             print_header()
+
         self.__print_menu_title()
         self.print_menu()
         self.__print_footer()

kiauh/core/services/message_service.py

@@ -0,0 +1,57 @@
+# ======================================================================= #
+#  Copyright (C) 2020 - 2024 Dominik Willner <th33xitus@gmail.com>        #
+#                                                                         #
+#  This file is part of KIAUH - Klipper Installation And Update Helper    #
+#  https://github.com/dw-0/kiauh                                          #
+#                                                                         #
+#  This file may be distributed under the terms of the GNU GPLv3 license  #
+# ======================================================================= #
+
+from dataclasses import dataclass
+from typing import List
+
+from core.logger import DialogType, Logger
+from core.types.color import Color
+
+
+@dataclass()
+class Message:
+    title: str
+    text: List[str]
+    color: Color
+
+
+class MessageService:
+    _instance = None
+
+    def __new__(cls) -> "MessageService":
+        if cls._instance is None:
+            cls._instance = super(MessageService, cls).__new__(cls)
+        return cls._instance
+
+    def __init__(self) -> None:
+        if not hasattr(self, "__initialized"):
+            self.__initialized = False
+        if self.__initialized:
+            return
+        self.__initialized = True
+        self.message = None
+
+    def set_message(self, message: Message) -> None:
+        self.message = message
+
+    def display_message(self) -> None:
+        if self.message is None:
+            return
+
+        Logger.print_dialog(
+            title=DialogType.CUSTOM,
+            content=self.message.text,
+            custom_title=self.message.title,
+            custom_color=self.message.color,
+        )
+
+        self.__clear_message()
+
+    def __clear_message(self) -> None:
+        self.message = None