from PIL import Image
import os
import tkinter as tk
from tkinter import filedialog

def convert_image_to_256color_bmp(img, target_width=320, target_height=240):
   """Converteer naar 256 kleuren BMP op 320x240 resolutie."""
   img = img.convert("RGB").resize((target_width, target_height), Image.LANCZOS)
   quantized = img.quantize(colors=256, method=Image.Quantize.MEDIANCUT)
   return quantized

def batch_convert_images(input_folder, output_folder):
   """Converteer alle images in map naar 256 kleuren BMP's met nummering."""
   if not os.path.exists(output_folder):
       os.makedirs(output_folder)

   supported_ext = (".jpg", ".jpeg", ".png", ".bmp", ".gif")
   files = [f for f in os.listdir(input_folder) if f.lower().endswith(supported_ext)]
   files.sort()

   for i, filename in enumerate(files, start=1):
       try:
           path = os.path.join(input_folder, filename)
           img = Image.open(path)
           bmp_img = convert_image_to_256color_bmp(img)
           out_name = f"image_{i:03d}.bmp"
           out_path = os.path.join(output_folder, out_name)
           bmp_img.save(out_path, format="BMP")
           print(f"[{i}/{len(files)}] Converted {filename} -> {out_name}")
       except Exception as e:
           print(f"Error converting {filename}: {e}")

def select_folder_with_gui(title="Select folder"):
   root = tk.Tk()
   root.withdraw()
   folder = filedialog.askdirectory(title=title)
   root.destroy()
   return folder

if __name__ == "__main__":
   print("Select input folder with images...")
   input_folder = select_folder_with_gui("Select input folder with images")
   if input_folder:
       print("Select output folder...")
       output_folder = select_folder_with_gui("Select output folder for BMPs")
       if output_folder:
           batch_convert_images(input_folder, output_folder)
           print("Done!")
       else:
           print("No output folder selected.")
   else:
       print("No input folder selected.")