import glob
import json
import os
import subprocess
import sys


def run():
    if len(sys.argv) > 1:
        files = sys.argv[1:]
    else:
        files = glob.glob("*.m4b")

    for f in files: 
        rename(f)

def rename(f):
    p = subprocess.Popen( ["exiftool","-json","-Artist","-Title",f],
        stdin=subprocess.PIPE,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE
    )
    out, err = p.communicate()
    meta = json.loads(out)[0]
    artist = meta['Artist']
    title = meta['Title'].split(":")[0]

    try:
        os.mkdir(f"{artist}")
    except FileExistsError as e:
        pass

    try:
        os.mkdir(f"{artist}/{title}")
    except FileExistsError as e:
        pass


    new_path = f"{artist}/{title}/Audiobook.m4b"
    os.rename(f, new_path)


if __name__ == "__main__":
    run()