fix(gcode_shell_cmd): update comment to clarify config directory usage (#767)

- Standardize `str()` wrapping for color-applied strings in various returns.
- Refine type hints for better code clarity and robustness.
- Add null checks for port inputs to prevent potential errors.

kiauh/components/webui_client/client_utils.py

@@ -78,10 +78,10 @@ def get_current_client_config() -> str:
     installed = [c for c in clients if c.client_config.config_dir.exists()]
 
     if not installed:
-        return Color.apply("-", Color.CYAN)
+        return str(Color.apply("-", Color.CYAN))
     elif len(installed) == 1:
         cfg = installed[0].client_config
-        return Color.apply(cfg.display_name, Color.CYAN)
+        return str(Color.apply(cfg.display_name, Color.CYAN))
 
     # at this point, both client config folders exists, so we need to check
     # which are actually included in the printer.cfg of all klipper instances
@@ -100,18 +100,18 @@ def get_current_client_config() -> str:
 
         # if both are included in the same file, we have a potential conflict
         if includes_mainsail and includes_fluidd:
-            return Color.apply("Conflict", Color.YELLOW)
+            return str(Color.apply("Conflict", Color.YELLOW))
 
     if not mainsail_includes and not fluidd_includes:
         # there are no includes at all, even though the client config folders exist
-        return Color.apply("-", Color.CYAN)
+        return str(Color.apply("-", Color.CYAN))
     elif len(fluidd_includes) > len(mainsail_includes):
         # there are more instances that include fluidd than mainsail
-        return Color.apply(fluidd.client_config.display_name, Color.CYAN)
+        return str(Color.apply(fluidd.client_config.display_name, Color.CYAN))
     else:
         # there are the same amount of non-conflicting includes for each config
         # or more instances include mainsail than fluidd
-        return Color.apply(mainsail.client_config.display_name, Color.CYAN)
+        return str(Color.apply(mainsail.client_config.display_name, Color.CYAN))
 
 
 def enable_mainsail_remotemode() -> None:
@@ -152,10 +152,9 @@ def symlink_webui_nginx_log(
 def get_local_client_version(client: BaseWebClient) -> str | None:
     relinfo_file = client.client_dir.joinpath("release_info.json")
     version_file = client.client_dir.joinpath(".version")
-    default = "-"
 
     if not client.client_dir.exists():
-        return default
+        return None
 
     # try to get version from release_info.json first
     if relinfo_file.is_file():
@@ -177,11 +176,11 @@ def get_local_client_version(client: BaseWebClient) -> str | None:
         try:
             with open(version_file, "r") as f:
                 line = f.readline().strip()
-            return line or default
+            return line or None
         except OSError:
             Logger.print_error("Unable to read '.version'")
 
-    return default
+    return None
 
 
 def get_remote_client_version(client: BaseWebClient) -> str | None:
@@ -446,9 +445,9 @@ def get_client_port_selection(
     while True:
         _type = "Reconfigure" if reconfigure else "Configure"
         question = f"{_type} {client.display_name} for port"
-        port_input = get_number_input(question, min_value=80, default=port)
+        port_input: int | None = get_number_input(question, min_value=80, default=port)
 
-        if port_input not in ports_in_use:
+        if port_input and port_input not in ports_in_use:
             client_settings: WebUiSettings = settings[client.name]
             client_settings.port = port_input
             settings.save()

kiauh/components/webui_client/menus/client_install_menu.py

@@ -97,7 +97,7 @@ class ClientInstallMenu(BaseMenu):
         self.message_service.set_message(message)
 
     def _get_current_port(self) -> int:
-        curr_port = get_nginx_listen_port(self.client.nginx_config)
+        curr_port: int | None = get_nginx_listen_port(self.client.nginx_config)
         if curr_port is None:
             # if the port is not found in the config file we use
             # the default port from the kiauh settings as fallback

kiauh/core/menus/main_menu.py

@@ -95,8 +95,8 @@ class MainMenu(BaseMenu):
         status_data: ComponentStatus = status_fn(*args)
         code: int = status_data.status
         status: StatusText = StatusMap[code]
-        owner: str = trunc_string(status_data.owner, 23)
-        repo: str = trunc_string(status_data.repo, 23)
+        owner: str = trunc_string(status_data.owner, 23) if status_data.owner else '-'
+        repo: str = trunc_string(status_data.repo, 23) if status_data.repo else '-'
         instance_count: int = status_data.instances
 
         count_txt: str = ""

kiauh/core/menus/update_menu.py

@@ -257,7 +257,7 @@ class UpdateMenu(BaseMenu):
 
     def _format_local_status(self, local_version, remote_version) -> str:
         color = Color.RED
-        if not local_version or local_version == '-':
+        if local_version is None:
             color = Color.RED
         elif local_version == remote_version:
             color = Color.GREEN
@@ -290,7 +290,13 @@ class UpdateMenu(BaseMenu):
         return self.status_data[name]["installed"]
 
     def _is_update_available(self, name: str) -> bool:
-        return self.status_data[name]["local"] != self.status_data[name]["remote"]
+        local = self.status_data[name]["local"]
+        remote = self.status_data[name]["remote"]
+
+        if local is None or remote is None:
+            return False
+
+        return local != remote
 
     def _run_update_routine(self, name: str, update_fn: Callable, *args) -> None:
         display_name = self.status_data[name]["display_name"]

kiauh/core/types/component_status.py

@@ -26,7 +26,7 @@ class ComponentStatus:
     owner: str | None = None
     repo: str | None = None
     repo_url: str | None = None
-    branch: str = ""
+    branch: str | None = None
     local: str | None = None
     remote: str | None = None
     instances: int | None = None

kiauh/extensions/gcode_shell_cmd/gcode_shell_cmd_extension.py

@@ -97,7 +97,7 @@ class GcodeShellCmdExtension(BaseExtension):
 
     def install_example_cfg(self, instances: List[Klipper]):
         cfg_dirs = [instance.base.cfg_dir for instance in instances]
-        # copy extension to klippy/extras
+        # copy extension to config directories
         for cfg_dir in cfg_dirs:
             Logger.print_status(f"Create shell_command.cfg in '{cfg_dir}' ...")
             if check_file_exist(cfg_dir.joinpath("shell_command.cfg")):

kiauh/utils/common.py

@@ -42,7 +42,7 @@ def get_kiauh_version() -> str:
     Helper method to get the current KIAUH version by reading the latest tag
     :return: string of the latest tag or a default value if no tags exist
     """
-    tags = get_local_tags(Path(__file__).parent.parent)
+    tags: List[str] = get_local_tags(Path(__file__).parent.parent)
     if tags:
         return tags[-1]
     else:
@@ -108,7 +108,7 @@ def get_install_status(
     from utils.instance_utils import get_instances
 
     checks = []
-    branch: str = ""
+    branch: str | None = None
 
     if repo_dir.exists():
         checks.append(True)

kiauh/utils/fs_utils.py

@@ -24,13 +24,16 @@ from core.logger import Logger
 
 def check_file_exist(file_path: Path, sudo=False) -> bool:
     """
-    Helper function for checking the existence of a file |
+    Helper function for checking the existence of a file.
+    Also works with symlinks (returns False if broken) |
     :param file_path: the absolute path of the file to check
     :param sudo: use sudo if required
     :return: True, if file exists, otherwise False
     """
     if sudo:
-        command = ["sudo", "find", file_path.as_posix()]
+        # -L forces find to follow symlinks
+        # -maxdepth = 0 avoids losing time if `file_path` is a directory
+        command = ["sudo", "find", "-L", file_path.as_posix(), "-maxdepth", "0"]
         try:
             check_output(command, stderr=DEVNULL)
             return True
@@ -44,7 +47,16 @@ def check_file_exist(file_path: Path, sudo=False) -> bool:
 
 
 def create_symlink(source: Path, target: Path, sudo=False) -> None:
+    """
+    Helper function to create a symlink from source to target
+    If the target file exists, it will be overwritten. |
+    :param source: the source file/directory
+    :param target: the target file/directory
+    :param sudo: use sudo if required
+    :return: None
+    """
     try:
+        # -f forcibly creates/overwrites the symlink
         cmd = ["ln", "-sf", source.as_posix(), target.as_posix()]
         if sudo:
             cmd.insert(0, "sudo")

kiauh/utils/git_utils.py

@@ -73,44 +73,44 @@ def git_pull_wrapper(target_dir: Path) -> None:
         return
 
 
-def get_repo_name(repo: Path) -> Tuple[str, str]:
+def get_repo_name(repo: Path) -> Tuple[str | None, str | None]:
     """
     Helper method to extract the organisation and name of a repository |
     :param repo: repository to extract the values from
     :return: String in form of "<orga>/<name>" or None
     """
     if not repo.exists() or not repo.joinpath(".git").exists():
-        return "-", "-"
+        return None, None
 
     try:
         cmd = ["git", "-C", repo.as_posix(), "config", "--get", "remote.origin.url"]
         result: str = check_output(cmd, stderr=DEVNULL).decode(encoding="utf-8")
         substrings: List[str] = result.strip().split("/")[-2:]
 
-        orga: str = substrings[0] if substrings[0] else "-"
-        name: str = substrings[1] if substrings[1] else "-"
+        orga: str | None = substrings[0] if substrings[0] else None
+        name: str | None = substrings[1] if substrings[1] else None
 
-        return orga, name.replace(".git", "")
+        return orga, name.replace(".git", "") if name else None
 
     except CalledProcessError:
-        return "-", "-"
+        return None, None
 
 
-def get_current_branch(repo: Path) -> str:
+def get_current_branch(repo: Path) -> str | None:
     """
     Get the current branch of a local Git repository
     :param repo: Path to the local Git repository
-    :return: Current branch
+    :return: Current branch or None if not determinable
     """
     try:
         cmd = ["git", "branch", "--show-current"]
         result: str = check_output(cmd, stderr=DEVNULL, cwd=repo).decode(
             encoding="utf-8"
         )
-        return result.strip() if result else "-"
+        return result.strip() if result else None
 
     except CalledProcessError:
-        return "-"
+        return None
 
 
 def get_local_tags(repo_path: Path, _filter: str | None = None) -> List[str]:

kiauh/utils/input_utils.py

@@ -156,7 +156,7 @@ def format_question(question: str, default=None) -> str:
     if default is not None:
         formatted_q += f" (default={default})"
 
-    return Color.apply(f"###### {formatted_q}: ", Color.CYAN)
+    return str(Color.apply(f"###### {formatted_q}: ", Color.CYAN))
 
 
 def validate_number_input(value: str, min_count: int, max_count: int | None) -> int: