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#!/usr/bin/env python3
import argparse
import datetime
import glob
import json
import music_tag
import os
from pathlib import Path
import sys
import youtube_dl
def download_song(song_url, ytdl):
"""
Download a song using youtube url and song title
"""
return ytdl.extract_info(song_url, download=True)
def format_youtube_date(date):
default = "Unknown Year"
try:
fmt = "%Y%m%d"
d = datetime.datetime.strptime(date, fmt)
return d.year
except Exception as ex:
print(ex)
return default
def get_all_files(directory):
things = glob.glob(os.path.join(directory, '*.mp3'))
files = []
for thing in things:
if os.path.isfile(thing):
files.append(thing)
return files
def get_command_line_options():
parser = argparse.ArgumentParser(description="Download songs from YouTube Music")
parser.add_argument("url", metavar="string", type=str, help="Playlist or Song URL to download")
parser.add_argument("-c", "--cookies", metavar="string", type=str, help="Cookie file to use.")
parser.add_argument("-o", "--output", metavar="string", type=str, help="Output directory to use")
return parser.parse_args()
# TODO: switch command line args to argparse
def get_playlist_url():
return sys.argv[1]
def get_video_urls_in_playlist(playlist_url, ytdl):
videos = ytdl.extract_info(playlist_url, download=False)
urls = []
for vid in videos['entries']:
if 'webpage_url' in vid.keys() and vid['webpage_url'] is not None:
urls.append(vid['webpage_url'])
return urls
def move_file(file, metadata, output_directory):
# TODO: Pass a jamos specific metadata object/dict
# Then we can do this validation all at once
artist = 'unknownartist'
album = 'unknownalbum'
title = 'unknownsong'
if ('artist' in metadata.keys()) and (metadata['artist'] is not None):
if len(metadata['artist'].split(',')) > 1:
# If there are multiple artists, pick the first one
# NOTE: This may break if the artist has a comma in their name
artist = metadata['artist'].split(',')[0].replace(' ', '_').lower()
else:
artist = metadata['artist'].replace(' ', '_').lower()
if ('album' in metadata.keys()) and (metadata['album'] is not None):
album = metadata['album'].replace(' ', '_').lower()
if ('title' in metadata.keys()) and (metadata['title'] is not None):
title = metadata['title'].replace(' ', '_').replace('/', '').lower()
final_directory = os.path.join(
output_directory,
artist,
album)
Path(final_directory).mkdir(parents=True, exist_ok=True)
# TODO: Include album title in filename
# TODO: Research converting to mp3 instead of just naming it such.
# TODO: Research better file formats over mp3?
os.rename(
file,
os.path.join(final_directory, artist + '_' + title + '.mp3'))
def write_metadata_to_song_file(file, metadata):
f = music_tag.load_file(file)
artist = 'unknownartist'
album = 'unknownalbum'
title = 'unknownsong'
year = 9999
if ('artist' in metadata.keys()) and (metadata['artist'] is not None):
if len(metadata['artist'].split(',')) > 1:
# If there are multiple artists, pick the first one
# NOTE: This may break if the artist has a comma in their name
artist = metadata['artist'].split(',')[0].replace(' ', '_').lower()
else:
artist = metadata['artist'].replace(' ', '_').lower()
artist = artist.replace('&', 'and')
if ('album' in metadata.keys()) and (metadata['album'] is not None):
album = metadata['album'].replace(' ', '_').lower()
if ('title' in metadata.keys()) and (metadata['title'] is not None):
title = metadata['title'].replace(' ', '_').lower()
if ('release_date' in metadata.keys()):
year = format_youtube_date(metadata['release_date'])
f['name'] = title
f['artist'] = artist
f['album'] = album
f['year'] = year
f.save()
def create_downloader(music_directory, cookies):
audio_options = {
'format': 'mp3/bestaudio/best',
'cookiefile': cookies,
'outtmpl': music_directory + '%(title)s.%(ext)s',
'postprocessors': [
{
'key': 'FFmpegExtractAudio',
'preferredcodec': 'mp3',
'preferredquality': '192',
},
{'key': 'FFmpegMetadata'},
],
'writeinfojson': True
}
return youtube_dl.YoutubeDL(audio_options)
if __name__ == "__main__":
args = get_command_line_options()
# Get the playlist url from the command line
playlist_url = args.url
music_directory = args.output or "~/Music"
cookies = args.cookies or "~/cookies.txt"
ytdl = create_downloader(music_directory, cookies)
# TODO: Save urls to file so we can start in the
# middle of the playlist if needed
urls = get_video_urls_in_playlist(playlist_url, ytdl)
for url in urls:
try:
download_song(url, ytdl)
except Exception as ex:
# TODO: Handle this better
print(ex)
files = get_all_files(music_directory)
for f in files:
json_data = None
with open(f.replace('.mp3', '.info.json')) as json_file:
json_data = json.load(json_file)
write_metadata_to_song_file(f, json_data)
move_file(f, json_data, music_directory)
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