import numpy as np
from typing import Optional, Tuple, Any

class ApplicationState:
    """
    Encapsulates the runtime state of the Radalyze application.

    This class acts as a centralized data container for the application's
    state, avoiding the use of global variables. An instance of this
    class will be held by the main application window.
    """

    def __init__(self):
        """Initializes the application state with default values."""
        # --- File and Path Management ---
        self.last_used_directory: str = "."
        self.last_file_path: Optional[str] = None
        self.last_data_type: Optional[str] = None  # e.g., "Vector" or "Matrix"

        # --- Data Cache ---
        self.matrix_data: Optional[np.ndarray] = None

        # --- Visualization and UI State ---
        self.current_colormap: str = "viridis"
        self.original_xlim: Optional[Tuple[float, float]] = None
        self.original_ylim: Optional[Tuple[float, float]] = None
        self.current_domain: str = "frequencies"  # "frequencies" or "space"
        self.is_profile_hotkey_pressed: bool = False