add ckeck_key_is_exist() for import

common_tools.py

@@ -81,6 +81,57 @@ class LxTools(tk.Tk):
     def __init__(self, *args: Any, **kwargs: Any) -> None:
         super().__init__(*args, **kwargs)
 
+    @staticmethod
+    def ckeck_key_is_exist(
+        directorys: list[str], search_string: str = None
+    ) -> bool | None:
+        """
+        Check if the key is exist in the file
+        Args:
+            directorys (list[str]): list of directories to search in
+            search_string (str): string to search for
+        Returns:
+            bool: True if the key is found, False otherwise
+        """
+
+        if search_string:
+            result = False
+
+            for directory in directorys:
+
+                in_paths = Path(directory)
+
+                if not in_paths.exists() or not in_paths.is_dir():
+                    continue
+
+                # Get a list of all files in the directorys
+                files = [file for file in in_paths.iterdir() if file.is_file()]
+                if not files:
+                    continue
+
+            # Search for the string in the files
+            for file in files:
+                try:
+                    with open(file, "r", errors="ignore") as f:
+                        for line in f:
+                            if search_string in line:
+                                # Set the result to True if the string is found
+                                result = True
+                                break
+
+                    # If the string is found, stop searching for the string in other files
+                    if result:
+                        break
+
+                except Exception:
+                    # Ignore errors and continue to the next file
+                    continue
+
+        else:
+            result = None
+        print(result)
+        return result
+
     @staticmethod
     def center_window_cross_platform(window, width, height):
         """

wp_app_config.py

@@ -57,6 +57,13 @@ class AppConfig:
         "pkey_path": "/usr/local/etc/ssl/pwgk.pem",
     }
 
+    # Lists of searches
+    DIRECTORYS: list[str] = [
+        "/etc/netplan/",
+        "/etc/NetworkManager/system-connections/",
+        "/var/lib/NetworkManager/user-connections/",
+    ]
+
     # Images and icons paths
     IMAGE_PATHS: Dict[str, str] = {
         "icon_vpn": "/usr/share/icons/lx-icons/48/wg_vpn.png",