import os
from PIL import Image
import argparse


def convert_to_webp(dir_path):
    common_image_extensions = [".jpg", ".jpeg", ".png"]
    for subdir, dirs, files in os.walk(dir_path):
        for file in files:
            filepath = subdir + os.sep + file
            if filepath.endswith(".webp"):
                continue
            if not any(filepath.lower().endswith(ext) for ext in common_image_extensions):
                continue
            try:
                img = Image.open(filepath)
                if img.format == "WEBP":
                    continue
                print("检测到其他格式图片：" + filepath)
                webp_path = filepath + ".webp"
                img.save(webp_path, "WEBP")
                os.remove(filepath)
                os.rename(webp_path, filepath)
            except IOError:
                print(f"Cannot convert {file}")


if __name__ == "__main__":
    parser = argparse.ArgumentParser(description='Convert images to webp format.')
    parser.add_argument('dir_path', type=str, help='Directory path to scan for images')

    args = parser.parse_args()

    convert_to_webp(args.dir_path)

# python compress_dir_img.py /path/to/directory