fix

argenta/app/entity.py

@@ -1,8 +1,12 @@
 from typing import Callable
+from inspect import getfullargspec
+
 from ..command.entity import Command
-from argenta.command.input_comand.entity import InputCommand
-from argenta.command.input_comand.exceptions import InvalidInputFlagException
 from ..router.entity import Router
+from ..command.input_comand.entity import InputCommand
+from ..command.input_comand.exceptions import (IncorrectInputFlagException,
+                                               InvalidInputFlagsHandlerHasBeenAlreadyCreatedException,
+                                               IncorrectNumberArgsInvalidInputFlagsHandlerException)
 from .exceptions import (InvalidRouterInstanceException,
                          InvalidDescriptionMessagePatternException,
                          OnlyOneMainRouterIsAllowedException,
@@ -44,6 +48,7 @@ class App:
         self.repeat_command_groups = repeat_command_groups
 
         self._routers: list[Router] = []
+        self._invalid_input_flags_handler: Callable[[str], None] | None = None
         self._registered_router_entities: list[dict[str, str | list[dict[str, Callable[[], None] | Command]] | Router]] = []
         self._app_main_router: Router | None = None
         self._description_message_pattern: str = '[{command}] *=*=* {description}'
@@ -67,11 +72,16 @@ class App:
                 self.print_func(self.prompt)
 
             raw_command: str = input()
+
             try:
                 input_command: InputCommand = InputCommand.parse(raw_command=raw_command)
-            except InvalidInputFlagException:
+            except IncorrectInputFlagException:
+                self.print_func(self.line_separate)
+                if self._invalid_input_flags_handler:
+                    self._invalid_input_flags_handler(raw_command)
+                else:
+                    self.print_func(f'Incorrect flag syntax: "{raw_command}"')
                 self.print_func(self.line_separate)
-                self.print_func(self.command_group_description_separate)
                 if not self.repeat_command_groups:
                     self.print_func(self.prompt)
                 continue
@@ -86,7 +96,6 @@ class App:
                 continue
 
             for router in self._routers:
-
                 router.input_command_handler(input_command)
 
             self.print_func(self.line_separate)
@@ -112,6 +121,17 @@ class App:
         self._description_message_pattern: str = pattern
 
 
+    def set_invalid_input_flags_handler(self, handler: Callable[[str], None]) -> None:
+        if self._invalid_input_flags_handler:
+            raise InvalidInputFlagsHandlerHasBeenAlreadyCreatedException()
+        else:
+            args = getfullargspec(handler).args
+            if len(args) != 1:
+                raise IncorrectNumberArgsInvalidInputFlagsHandlerException()
+            else:
+                self._invalid_input_flags_handler = handler
+
+
     def get_main_router(self) -> Router:
         return self._app_main_router
 
@@ -169,7 +189,7 @@ class App:
             raise MissingHandlerForUnknownCommandsException()
 
         for router in self._routers:
-            if router.get_unknown_command_func() and self._app_main_router is not router:
+            if router.get_unknown_command_func() and not (self._app_main_router is router):
                 raise HandlerForUnknownCommandsOnNonMainRouterException()
 
 

argenta/command/input_comand/exceptions.py

@@ -21,4 +21,14 @@ class RepeatedInputFlagsException(Exception):
                 f"Duplicate flag was detected in the input: '{self.flag.get_string_entity()}'")
 
 
+class InvalidInputFlagsHandlerHasBeenAlreadyCreatedException(Exception):
+    def __str__(self):
+        return "Invalid Input Flags Handler has already been created"
+
+
+class IncorrectNumberArgsInvalidInputFlagsHandlerException(Exception):
+    def __str__(self):
+        return "Incorrect Input Flags Handler has incorrect number of arguments"
+
+
 

argenta/router/entity.py

@@ -20,10 +20,12 @@ class Router:
         self.name = name
 
         self._command_entities: list[dict[str, Callable[[], None] | Command]] = []
-        self._unknown_command_func: Callable[[str], None] | None = None
         self._is_main_router: bool = False
         self._ignore_command_register: bool = False
 
+        self._unknown_command_handler: Callable[[str], None] | None = None
+        self._not_valid_flag_handler: Callable[[str], None] | None = None
+
 
     def command(self, command: Command) -> Callable[[Any],  Any]:
         command.validate_commands_params()
@@ -41,10 +43,10 @@ class Router:
 
 
     def unknown_command(self, func):
-        if self._unknown_command_func is not None:
+        if self._unknown_command_handler is not None:
             raise UnknownCommandHandlerHasAlreadyBeenCreatedException()
 
-        self._unknown_command_func: Callable = func
+        self._unknown_command_handler: Callable = func
 
         def wrapper(*args, **kwargs):
             return func(*args, **kwargs)
@@ -61,9 +63,9 @@ class Router:
                             is_valid = command_entity['command'].validate_input_flag(flag)
                             if not is_valid:
                                 raise InvalidInputFlagException(flag)
-                        return command_entity['handler_func'](args=input_command.get_input_flags())
+                        return command_entity['handler_func'](input_command.get_input_flags())
                     else:
-                        return command_entity['handler_func'](args=FlagsGroup(None))
+                        return command_entity['handler_func'](FlagsGroup(None))
                 else:
                     if input_command.get_input_flags():
                         raise CurrentCommandDoesNotProcessFlagsException()
@@ -72,11 +74,11 @@ class Router:
 
 
     def get_unknown_command_func(self):
-        return self._unknown_command_func
+        return self._unknown_command_handler
 
 
     def unknown_command_handler(self, unknown_command):
-        self._unknown_command_func(unknown_command)
+        self._unknown_command_handler(unknown_command)
 
 
     def _validate_command(self, command: Command):
@@ -137,7 +139,7 @@ class Router:
             'ignore_command_register': self._ignore_command_register,
             'attributes': {
                 'command_entities': self._command_entities,
-                'unknown_command_func': self._unknown_command_func,
+                'unknown_command_func': self._unknown_command_handler,
                 'is_main_router': self._is_main_router
             }