Autocomplete and Path Input

def autocomplete(message: str, choices: List[str], default: str = "", 
                 qmark: str = "?", completer: Optional[Completer] = None, 
                 meta_information: Optional[Dict[str, Any]] = None, 
                 ignore_case: bool = True, match_middle: bool = True, 
                 complete_style: CompleteStyle = CompleteStyle.COLUMN, 
                 validate: Any = None, style: Optional[Style] = None, 
                 **kwargs) -> Question:
    """
    Create an autocomplete text input prompt.
    
    Args:
        message: The question/prompt text to display
        choices: List of possible completion choices
        default: Default value pre-filled in input
        qmark: Question prefix symbol (default "?")
        completer: Custom completer instance (overrides choices)
        meta_information: Dict mapping choices to metadata descriptions
        ignore_case: Case-insensitive matching
        match_middle: Allow matching anywhere in choice text
        complete_style: Completion display style (COLUMN, MULTI_COLUMN, READLINE)
        validate: Validator function or Validator instance
        style: Custom styling configuration
        **kwargs: Additional prompt_toolkit arguments
    
    Returns:
        Question instance ready for execution
    """

def path(message: str, default: Union[Path, str] = "", qmark: str = "?", 
         validate: Any = None, completer: Optional[Completer] = None, 
         style: Optional[Style] = None, only_directories: bool = False, 
         get_paths: Optional[Callable[[], List[str]]] = None, 
         file_filter: Optional[Callable[[str], bool]] = None, 
         complete_style: CompleteStyle = CompleteStyle.MULTI_COLUMN, 
         **kwargs) -> Question:
    """
    Create a file/directory path input prompt with completion.
    
    Args:
        message: The question/prompt text to display
        default: Default path value
        qmark: Question prefix symbol (default "?")
        validate: Validator function or Validator instance
        completer: Custom path completer (overrides built-in)
        style: Custom styling configuration
        only_directories: Restrict completion to directories only
        get_paths: Custom function to provide path suggestions
        file_filter: Function to filter displayed files/directories
        complete_style: Completion display style
        **kwargs: Additional prompt_toolkit arguments
    
    Returns:
        Question instance ready for execution
    """

class WordCompleter(Completer):
    def __init__(self, choices: Union[List[str], Callable[[], List[str]]], 
                 ignore_case: bool = True, 
                 meta_information: Optional[Dict[str, Any]] = None, 
                 match_middle: bool = True) -> None:
        """
        Word completion from a list of choices.
        
        Args:
            choices: Static list or function returning list of choices
            ignore_case: Case-insensitive matching
            meta_information: Dict mapping choices to metadata
            match_middle: Allow matching anywhere in choice text
        """

    def get_completions(self, document: Document, 
                        complete_event: CompleteEvent) -> Iterable[Completion]:
        """
        Generate completions for the current document state.
        
        Args:
            document: Current input document
            complete_event: Completion event details
            
        Yields:
            Completion objects with matched text and metadata
        """

class GreatUXPathCompleter(PathCompleter):
    def __init__(self, only_directories: bool = False, 
                 get_paths: Optional[Callable[[], List[str]]] = None, 
                 file_filter: Optional[Callable[[str], bool]] = None, 
                 min_input_len: int = 0, expanduser: bool = False) -> None:
        """
        Enhanced path completion with filtering and UX improvements.
        
        Args:
            only_directories: Show only directories in completion
            get_paths: Custom function to provide additional paths
            file_filter: Function to filter displayed files
            min_input_len: Minimum input length to trigger completion
            expanduser: Expand ~ to user home directory
        """

    def get_completions(self, document: Document, 
                        complete_event: CompleteEvent) -> Iterable[Completion]:
        """
        Generate path completions with enhanced filtering.
        
        Args:
            document: Current input document
            complete_event: Completion event details
            
        Yields:
            Completion objects for matching paths
        """

import questionary

# Simple word completion
language = questionary.autocomplete(
    "Choose programming language:",
    choices=["Python", "JavaScript", "TypeScript", "Java", "C++", "Go", "Rust"]
).ask()

# With default value
framework = questionary.autocomplete(
    "Select framework:",
    choices=["Django", "Flask", "FastAPI", "Tornado"],
    default="Django"
).ask()

import questionary

# Choices with descriptions
database = questionary.autocomplete(
    "Select database:",
    choices=["postgresql", "mysql", "sqlite", "mongodb"],
    meta_information={
        "postgresql": "Advanced open-source relational database",
        "mysql": "Popular open-source relational database",
        "sqlite": "Lightweight embedded database",
        "mongodb": "Document-oriented NoSQL database"
    }
).ask()

import questionary

# Dynamic choices from function
def get_available_ports():
    # Could query system for available ports
    return ["8000", "8080", "3000", "5000", "9000"]

port = questionary.autocomplete(
    "Choose port:",
    choices=get_available_ports()
).ask()

# Custom completer
from questionary.prompts.autocomplete import WordCompleter

custom_completer = WordCompleter(
    choices=["option1", "option2", "option3"],
    ignore_case=True,
    match_middle=False
)

result = questionary.autocomplete(
    "Enter option:",
    choices=[],  # Not used when completer is provided
    completer=custom_completer
).ask()

import questionary

# File path input
config_file = questionary.path("Enter config file path:").ask()

# Directory path only
output_dir = questionary.path(
    "Select output directory:",
    only_directories=True
).ask()

# With default path
log_file = questionary.path(
    "Log file location:",
    default="/var/log/app.log"
).ask()

import questionary
from pathlib import Path

# Directory-only with validation
def validate_directory(path):
    p = Path(path)
    if not p.exists():
        return f"Directory {path} does not exist"
    if not p.is_dir():
        return f"{path} is not a directory"
    return True

project_dir = questionary.path(
    "Select project directory:",
    only_directories=True,
    validate=validate_directory
).ask()

# File filtering
def python_files_only(filename):
    return filename.endswith('.py') or Path(filename).is_dir()

python_file = questionary.path(
    "Select Python file:",
    file_filter=python_files_only
).ask()

# Custom path suggestions
def get_common_paths():
    return ["/home/user/projects", "/opt", "/usr/local"]

path = questionary.path(
    "Enter path:",
    get_paths=get_common_paths
).ask()

import questionary
from prompt_toolkit.completion import CompleteStyle

# Different completion display styles
result = questionary.autocomplete(
    "Choose option:",
    choices=["very_long_option_name_1", "very_long_option_name_2", "short"],
    complete_style=CompleteStyle.MULTI_COLUMN  # or COLUMN, READLINE
).ask()

import questionary
from questionary import Validator, ValidationError

class EmailValidator(Validator):
    def validate(self, document):
        text = document.text
        if '@' not in text:
            raise ValidationError(
                message="Please enter a valid email address",
                cursor_position=len(text)
            )

email = questionary.autocomplete(
    "Enter email:",
    choices=["user@domain.com", "admin@site.org"],
    validate=EmailValidator()
).ask()