custom_nodes/comfyui_layerstyle/__init__.py

import importlib.util
import glob
import os
import sys
import __main__
import filecmp
import shutil

NODE_CLASS_MAPPINGS = {}
NODE_DISPLAY_NAME_MAPPINGS = {}

python = sys.executable
try:
    comfy_path = os.path.join(os.path.dirname(os.path.realpath(__main__.__file__)))
    extentions_folder = os.path.join(comfy_path, "web", "extensions", "dzNodes")

    javascript_folder = os.path.join(os.path.dirname(os.path.realpath(__file__)), "js")
    outdate_file_list = ['comfy_shared.js', 'debug.js', 'mtb_widgets.js', 'parse-css.js', 'dz_widgets.js']

    if not os.path.exists(extentions_folder):
        print(f'# 😺dzNodes: Making the "{extentions_folder}" folder')
        os.makedirs(extentions_folder, exist_ok=True)
    else:
        for i in outdate_file_list:
            outdate_file = os.path.join(extentions_folder, i)
            if os.path.exists(outdate_file):
                os.remove(outdate_file)

    result = filecmp.dircmp(javascript_folder, extentions_folder)

    if result.left_only or result.diff_files:
        print('# 😺dzNodes: Update to javascripts files detected')
        file_list = list(result.left_only)
        file_list.extend(x for x in result.diff_files if x not in file_list)

        for file in file_list:
            print(f'# 😺dzNodes:: Copying {file} to extensions folder')
            src_file = os.path.join(javascript_folder, file)
            dst_file = os.path.join(extentions_folder, file)
            if os.path.exists(dst_file):
                os.remove(dst_file)
            shutil.copy(src_file, dst_file)
except Exception as e:
    print(f'# 😺dzNodes: Error in update js files: {e}')

def get_ext_dir(subpath=None, mkdir=False):
    dir = os.path.dirname(__file__)
    if subpath is not None:
        dir = os.path.join(dir, subpath)

    dir = os.path.abspath(dir)

    if mkdir and not os.path.exists(dir):
        os.makedirs(dir)
    return dir

py = get_ext_dir("py")
files = os.listdir(py)
for file in files:
    if not file.endswith(".py"):
        continue
    name = os.path.splitext(file)[0]
    imported_module = importlib.import_module(".py.{}".format(name), __name__)
    try:
        NODE_CLASS_MAPPINGS = {**NODE_CLASS_MAPPINGS, **imported_module.NODE_CLASS_MAPPINGS}
        NODE_DISPLAY_NAME_MAPPINGS = {**NODE_DISPLAY_NAME_MAPPINGS, **imported_module.NODE_DISPLAY_NAME_MAPPINGS}
    except:
        pass

__all__ = ["NODE_CLASS_MAPPINGS", "NODE_DISPLAY_NAME_MAPPINGS"]