import os
import sys
import subprocess
from PIL import Image

def resource_path(relative_path): # for Pyinstaller
        if hasattr(sys, '_MEIPASS'):
            return os.path.join(sys._MEIPASS, relative_path)
        return os.path.join(os.path.abspath("."), relative_path)

def terminate_process(process_name):
    try:
        print(f"[INFO] Attempting to terminate process: {process_name}")
        subprocess.run(f"taskkill /F /IM {process_name}", shell=True, check=True)
        print(f"[INFO] Successfully terminated process: {process_name}")
        return 0
    except subprocess.CalledProcessError as e:
        if "128" in str(e): print(f"[WARN] Process '{process_name}' not found or already terminated.")
        else: print(f"[ERROR] Failed to terminate process '{process_name}'. Error: {e}")
    except Exception as e:
        print(f"[ERROR] Unexpected error while terminating '{process_name}'. Error: {e}")
    return 1

def start_process(process_name):
    try:
        print(f"[INFO] Attempting to start process: {process_name}")
        subprocess.run(f"start {process_name}", shell=True, check=True)
        print(f"[INFO] Successfully started process: {process_name}")
        return 0
    except FileNotFoundError:
        print(f"[ERROR] Process '{process_name}' not found. Please check the path or name.")
    except subprocess.CalledProcessError as e:
        print(f"[ERROR] Failed to start process '{process_name}'. Error: {e}")
    except Exception as e:
        print(f"[ERROR] Unexpected error while starting '{process_name}'. Error: {e}")
    return 1

"""
Pyinstaller splash screen related
"""
def check_alpha(img):
    """Check if the image contains translucent pixels."""
    alpha_channel = img.getchannel('A')
    alpha_data = alpha_channel.load()
    for y in range(img.height):
        for x in range(img.width):
            alpha_value = alpha_data[x, y]
            if 0 < alpha_value < 255:  # Check if translucent
                return True
    return False

def processing_image(img_path):
    img = Image.open(img_path).convert("RGBA")  # Ensure image is in RGBA format
    print("Contain translucency pixels (Before):", check_alpha(img))

    # Remove translucency: Set all non-opaque pixels (alpha != 255) to transparent (alpha = 0)
    pixels = img.load()
    for y in range(img.height):
        for x in range(img.width):
            r, g, b, a = pixels[x, y]
            if a != 255:  # If alpha is not fully opaque
                pixels[x, y] = (r, g, b, 0)  # Make pixel fully transparent

    print("Contain translucency pixels (After):", check_alpha(img))

    # Save the modified image
    output_path = img_path.replace(".png", "_transparent.png")
    img.save(output_path, "PNG")
    print(f"Processed image saved to {output_path}")
    return output_path