I have defined a dataclass, AppState, that holds various application states, along with methods for managing this state based on user interactions via a UI. Below is the dataclass definition:
```
@dataclass
class AppState:
    language: str = None
    repo_url: str = ""
    repo_path: str = ""
    repo_cloned: bool = False
    file_path: str = None
    file_name: str = None
    packages: Dict[str, Any] = field(default_factory=dict)
    complete_methods: Dict[str, Any] = field(default_factory=dict)
    method_name: str = None
    method_definition: str = None
    objective: str = None
    sample_data: Any = None
    test_cases: Dict[str, Any] = field(default_factory=dict)
    test_cases_full: Dict[str, Any] = field(default_factory=dict)
    selected_scenarios: List[Any] = field(default_factory=list)
    pytest_codes: Dict[str, Any] = field(default_factory=dict)
    pytest_results: Dict[str, Any] = field(default_factory=dict)
    langgraph_states: List[Any] = field(default_factory=list)
    questions: List[Any] = field(default_factory=list)
    answers: List[Any] = field(default_factory=list)
    messages_history: List[Any] = field(default_factory=list)
    components: List[Any] = field(default_factory=list)

```
  
In the UI, I can update the following fields: language, repo_url, file_path, and method_name. The following interactions must be handled with specific reset behavior:

When updating the repo_url, all instance variables in the AppState class should reset.
When changing the file_path, all instance variables related to the file_path should reset.
When changing the method_name, all instance variables related to the method_name should reset.
When updating the language, all instance variables related to the file_path should reset, and any state variables associated with the previous repo_url and file_path must be reprocessed.
I need to modify the following functions to implement the desired behavior:

handle_repo_url(repo_url, data)
handle_language(language, data)
handle_file_path(file_path, data)
handle_method_name(method_name, data)

Below is the current implementation of these functions:
```
def handle_repo_url(repo_url, data):
    if not repo_url:
        return data

    if repo_url != data.repo_url:
        repo_path = f"cloned_repos/{repo_url.split('/')[-1]}"
        data.update_and_reset(repo_url=repo_url)
        data.update(repo_path=repo_path)
    else:
        repo_path = data.repo_path

    if os.path.isdir(repo_path):
        data.repo_cloned = True
        return data

    if "username" not in st.session_state and "password" not in st.session_state:
        stc.get_username_password()
    else:
        clone_output = clone_repository(
            repo_url,
            repo_path,
            st.session_state.username,
            st.session_state.password,
        )
        if clone_output:
            data.repo_cloned = True
            logger.info("Repository Cloning : Success !")
        else:
            logger.error("Repository Cloning : Error !")
            stc.toast("Repository Cloning : Error !", type="error")

    return data


def handle_language(language, data):
    if language != data.language:
        data.update_and_reset(language=language)

    return data


def handle_file_path(file_path, data):
    if file_path != data.file_path:
        st.session_state.method_name = None
        if file_path.endswith(".py"):
            file_name = os.path.basename(file_path)
            packages, complete_methods = data.process_file(file_path)
            data.update_and_reset(file_path=file_path)
            data.update(
                file_path=file_path,
                file_name=file_name,
                packages=packages,
                complete_methods=complete_methods,
            )
    else:
        file_name = data.file_name
        packages = data.packages
        complete_methods = data.complete_methods

    return data


def handle_method_name(method_name, data):
    if method_name != data.method_name:
        selected_method_data = find_selected_method(
            nested_dict=data.complete_methods, target_key=method_name
        )
        if selected_method_data is not None:
            method_name, method_definition = selected_method_data
            data.update_and_reset(method_name=method_name)
            data.update(method_name=method_name, method_definition=method_definition)

    else:
        method_definition = data.method_definition

    return data
```