# Copyright (c) 2016 Jakub Kukiełka

# Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
# documentation files (the "Software"), to deal in the Software without restriction, including without
# limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
# Software, and to permit persons to whom the Software is furnished to do so, subject to the following
# conditions:

# The above copyright notice and this permission notice shall be included in all copies or substantial portions
# of the Software.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
# TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
# CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.

# Only supports .ogg! (this is due to my own purposes)

from mutagen.oggvorbis import OggVorbis
from mutagen.flac import Picture, error as FLACError
import os
import glob
import base64

print("""This program will segregate all music files in the current directory,
into their own album directories.""")

proceed = input("Proceed (Y/n)?: ")

if proceed != "" and proceed != "y" and proceed != "Y":
    exit()

def makedir(directory):
    if not os.path.exists(directory):
        print("creating directory: ", directory)
        os.makedirs(directory)

# Read all .ogg files in directory
lst_files = glob.glob("*.ogg")
for i in lst_files:
    audio = OggVorbis(i)
    if not hasattr(audio, "album"):
        continue

    cover_file = glob.glob(audio["album"][0] + "/cover*")
    if len(cover_file) == 0:
        for b64_data in audio.get("metadata_block_picture", []):
            try:
                data = base64.b64decode(b64_data)
            except (TypeError, ValueError):
                continue

            try:
                picture = Picture(data)
            except FLACError:
                continue

            extensions = {
                "image/jpeg": "jpg",
                "image/png": "png",
                "image/gif": "gif",
            }
            ext = extensions.get(picture.mime, "jpg")

            os.chdir(audio["album"][0])
            with open("cover.%s" % ext, "wb") as h:
                h.write(picture.data)

            os.chdir("..")

    # Move file to appropriate album directory
    os.rename(i, audio["album"][0] + "/" + i)