import tkinter as tk
from tkinter import messagebox
from typing import Callable
import sys
import os

# Add parent directory to path for imports (since we're in utils/ subdirectory)
_parent_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
if _parent_dir not in sys.path:
    sys.path.insert(0, _parent_dir)


class ImagePropertiesHandler:
    """Handler for displaying image properties.
    
    This class encapsulates the functionality to display image information
    such as dimensions, mode, format, file size, and path.
    """
    
    def __init__(self, get_current_image: Callable):
        """Initialize the image properties handler.
        
        Args:
            get_current_image: Callable that returns the current ImageContainer
        """
        self._get_current_image = get_current_image
    
    def show_properties(self) -> None:
        """Display image properties in a dialog."""
        current_image = self._get_current_image()
        if current_image is None or current_image.getImage() is None:
            messagebox.showwarning("No Image", "No image loaded.")
            return
        
        image = current_image.getImage()
        width, height = current_image.getDimensions()
        path = current_image.getPath()
        mode = image.mode if image else "N/A"
        format_name = image.format if image else "N/A"
        
        # Get file size if path exists
        file_size = "N/A"
        if path:
            try:
                size_bytes = os.path.getsize(path)
                if size_bytes < 1024:
                    file_size = f"{size_bytes} bytes"
                elif size_bytes < 1024 * 1024:
                    file_size = f"{size_bytes / 1024:.2f} KB"
                else:
                    file_size = f"{size_bytes / (1024 * 1024):.2f} MB"
            except:
                file_size = "Unknown"
        
        # Create properties message
        properties_text = f"Image Properties\n\n"
        properties_text += f"Dimensions: {width} x {height} pixels\n"
        properties_text += f"Mode: {mode}\n"
        properties_text += f"Format: {format_name}\n"
        properties_text += f"File Size: {file_size}\n"
        properties_text += f"Path: {path if path else 'Unsaved'}"
        
        messagebox.showinfo("Image Properties", properties_text)