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				https://github.com/KevinMidboe/spotify-downloader.git
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			288 lines
		
	
	
		
			9.8 KiB
		
	
	
	
		
			Python
		
	
	
		
			Executable File
		
	
	
	
	
			
		
		
	
	
			288 lines
		
	
	
		
			9.8 KiB
		
	
	
	
		
			Python
		
	
	
		
			Executable File
		
	
	
	
	
#!/usr/bin/env python
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# -*- coding: UTF-8 -*-
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from core import metadata
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from core import convert
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from core import misc
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from bs4 import BeautifulSoup
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from titlecase import titlecase
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from slugify import slugify
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import spotipy
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import pafy
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import sys
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import os
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# urllib2 is urllib.request in python3
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try:
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    import urllib2
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except ImportError:
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    import urllib.request as urllib2
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# "[artist] - [song]"
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def generate_songname(raw_song):
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    if misc.is_spotify(raw_song):
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        tags = generate_metadata(raw_song)
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        raw_song = tags['artists'][0]['name'] + ' - ' + tags['name']
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    return misc.fix_encoding(raw_song)
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# fetch song's metadata from spotify
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def generate_metadata(raw_song):
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    if misc.is_spotify(raw_song):
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        # fetch track information directly if it is spotify link
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        meta_tags = spotify.track(raw_song)
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    else:
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        # otherwise search on spotify and fetch information from first result
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        try:
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            meta_tags = spotify.search(raw_song, limit=1)['tracks']['items'][0]
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        except:
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            return None
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    artist = spotify.artist(meta_tags['artists'][0]['id'])
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    album = spotify.album(meta_tags['album']['id'])
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    try:
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        meta_tags[u'genre'] = titlecase(artist['genres'][0])
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    except IndexError:
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        meta_tags[u'genre'] = None
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    try:
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        meta_tags[u'copyright'] = album['copyrights'][0]['text']
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    except IndexError:
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        meta_tags[u'copyright'] = None
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    meta_tags[u'release_date'] = album['release_date']
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    meta_tags[u'publisher'] = album['label']
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    meta_tags[u'total_tracks'] = album['tracks']['total']
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    #import pprint
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    #pprint.pprint(meta_tags)
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    #pprint.pprint(spotify.album(meta_tags['album']['id']))
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    return meta_tags
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def generate_youtube_url(raw_song):
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    # decode spotify http link to "[artist] - [song]"
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    song = generate_songname(raw_song)
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    # generate direct search YouTube URL
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    search_url = misc.generate_search_url(song)
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    item = urllib2.urlopen(search_url).read()
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    #item = unicode(item, 'utf-8')
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    items_parse = BeautifulSoup(item, "html.parser")
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    check = 1
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    if args.manual:
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        links = []
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        print(song)
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        print('')
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        print('0. Skip downloading this song')
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        # fetch all video links on first page on YouTube
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        for x in items_parse.find_all('h3', {'class': 'yt-lockup-title'}):
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            # confirm the video result is not an advertisement
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            if not x.find('channel') == -1 or not x.find('googleads') == -1:
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                print(str(check) + '. ' + x.get_text())
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                links.append(x.find('a')['href'])
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                check += 1
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        print('')
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        # let user select the song to download
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        result = misc.input_link(links)
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        if result is None:
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            return None
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    else:
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        # get video link of the first YouTube result
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        result = items_parse.find_all(attrs={'class': 'yt-uix-tile-link'})[0]['href']
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        # confirm the video result is not an advertisement
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        # otherwise keep iterating until it is not
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        while not result.find('channel') == -1 or not result.find('googleads') == -1:
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            result = items_parse.find_all(attrs={'class': 'yt-uix-tile-link'})[check]['href']
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            check += 1
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    full_link = "youtube.com" + result
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    return full_link
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# parse track from YouTube
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def go_pafy(raw_song):
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    # video link of the video to extract audio from
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    track_url = generate_youtube_url(raw_song)
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    if track_url is None:
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        return None
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    else:
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        # parse the YouTube video
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        return pafy.new(track_url)
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# title of the YouTube video
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def get_youtube_title(content, number=None):
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    title = misc.fix_encoding(content.title)
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    if number is None:
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        return title
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    else:
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        return str(number) + '. ' + title
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# fetch user playlists when using -u option
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def feed_playlist(username):
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    # fetch all user playlists
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    playlists = spotify.user_playlists(username)
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    links = []
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    check = 1
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    # iterate over user playlists
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    for playlist in playlists['items']:
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        print(str(check) + '. ' + misc.fix_encoding(playlist['name']) + ' (' + str(playlist['tracks']['total']) + ' tracks)')
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        links.append(playlist)
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        check += 1
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    print('')
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    # let user select playlist
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    playlist = misc.input_link(links)
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    # fetch detailed information for playlist
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    results = spotify.user_playlist(playlist['owner']['id'], playlist['id'], fields="tracks,next")
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    print('')
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    # slugify removes any special characters
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    file = slugify(playlist['name'], ok='-_()[]{}') + '.txt'
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    print('Feeding ' + str(playlist['tracks']['total']) + ' tracks to ' + file)
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    tracks = results['tracks']
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    # write tracks to file
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    misc.feed_tracks(file, tracks)
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    # check if there are more pages
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    # 1 page = 50 results
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    while tracks['next']:
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        tracks = spotify.next(tracks)
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        misc.feed_tracks(file, tracks)
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def download_song(content):
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    if args.input_ext == '.webm':
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        # best available audio in .webm
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        link = content.getbestaudio(preftype='webm')
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    elif args.input_ext == '.m4a':
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        # best available audio in .webm
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        link = content.getbestaudio(preftype='m4a')
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    else:
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        return False
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    if link is None:
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        return False
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    else:
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        music_file = misc.generate_filename(content.title)
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        # download link
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        link.download(filepath='Music/' + music_file + args.input_ext)
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        return True
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# check if input song already exists in Music folder
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def check_exists(music_file, raw_song, islist=True):
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    files = os.listdir("Music")
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    for file in files:
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        if file.endswith(".temp"):
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            os.remove("Music/" + file)
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            continue
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        # check if any file with similar name is already present in Music/
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        dfile = misc.fix_decoding(file)
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        umfile = misc.fix_decoding(misc.generate_filename(music_file))
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        if dfile.startswith(umfile):
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            # check if the already downloaded song has correct metadata
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            already_tagged = metadata.compare(file, generate_metadata(raw_song))
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            # if not, remove it and download again without prompt
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            if misc.is_spotify(raw_song) and not already_tagged:
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                os.remove("Music/" + file)
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                return False
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            # do not prompt and skip the current song if already downloaded when using list
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            if islist:
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                return True
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            # if downloading only single song, prompt to re-download
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            else:
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                prompt = misc.user_input('Song with same name has already been downloaded. Re-download? (y/n): ').lower()
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                if prompt == "y":
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                    os.remove("Music/" + file)
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                    return False
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                else:
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                    return True
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    return False
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# download songs from list
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def grab_list(file):
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    with open(file, 'r') as listed:
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        lines = (listed.read()).splitlines()
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    # ignore blank lines in file (if any)
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    try:
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        lines.remove('')
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    except ValueError:
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        pass
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    print('Total songs in list = ' + str(len(lines)) + ' songs')
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    print('')
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    # nth input song
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    number = 1
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    for raw_song in lines:
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        try:
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            grab_single(raw_song, number=number)
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        # token expires after 1 hour
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        except spotipy.oauth2.SpotifyOauthError:
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            # refresh token when it expires
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            token = misc.generate_token()
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            global spotify
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            spotify = spotipy.Spotify(auth=token)
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            grab_single(raw_song, number=number)
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        # detect network problems
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        except (urllib2.URLError, TypeError, IOError):
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            lines.append(raw_song)
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            # remove the downloaded song from .txt
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            misc.trim_song(file)
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            # and append it to the last line in .txt
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            with open(file, 'a') as myfile:
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                myfile.write(raw_song)
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            print('Failed to download song. Will retry after other songs.')
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            continue
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        except KeyboardInterrupt:
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            misc.grace_quit()
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        finally:
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            print('')
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        misc.trim_song(file)
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        number += 1
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# logic behind downloading some song
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def grab_single(raw_song, number=None):
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    # check if song is being downloaded from list
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    if number:
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        islist = True
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    else:
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        islist = False
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    content = go_pafy(raw_song)
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    if content is None:
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        return
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    # print "[number]. [artist] - [song]" if downloading from list
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    # otherwise print "[artist] - [song]"
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    print(get_youtube_title(content, number))
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    # generate file name of the song to download
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    music_file = misc.generate_filename(content.title)
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    music_file = misc.fix_decoding(music_file)
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    if not check_exists(music_file, raw_song, islist=islist):
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        if download_song(content):
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            print('')
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            input_song = music_file + args.input_ext
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            output_song = music_file + args.output_ext
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            convert.song(input_song,
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                         output_song,
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                         avconv=args.avconv,
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                         verbose=args.verbose)
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            os.remove('Music/' + input_song)
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            meta_tags = generate_metadata(raw_song)
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            if not args.no_metadata:
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                metadata.embed(output_song, meta_tags)
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        else:
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            print('No audio streams available')
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class Args(object):
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    manual = False
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    input_ext = '.m4a'
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    output_ext = '.mp3'
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args = Args()
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# token is mandatory when using Spotify's API
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# https://developer.spotify.com/news-stories/2017/01/27/removing-unauthenticated-calls-to-the-web-api/
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token = misc.generate_token()
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spotify = spotipy.Spotify(auth=token)
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misc.filter_path('Music')
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if __name__ == '__main__':
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    os.chdir(sys.path[0])
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    args = misc.get_arguments()
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    if args.song:
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        grab_single(raw_song=args.song)
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    elif args.list:
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        grab_list(file=args.list)
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    elif args.username:
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        feed_playlist(username=args.username) |