Update Readme, add usability

README.md

@@ -1,3 +1,16 @@
 # YTM-Shuffler
 
-Shuffles a playlist because google can't seem to be bothered to do it
+Shuffles a playlist because google can't seem to be bothered to do it
+
+---
+
+# Usage
+
+1.  Clone this repo `git clone https://daviddaily.dev/david/YTM-Shuffler.git && cd YTM-Shuffler`
+2.  Run `pipenv install`
+3.  Follow the documentation from the [API docs](https://ytmusicapi.readthedocs.io/en/latest/setup.html#manual-file-creation) to create the `config.json`
+4.  Run `pipenv shell`
+5.  Use `python shuffler.py ` followed by the name of the playlist you'd like to be shuffled, in quotes if its more than one word.
+6.  If you'd like to create an automagic backup, pass a second argument like `python shuffler.py "shuffle this" yes`
+
+Currently its limited to 1000 songs, but I feel like that's enough for most people.

shuffler.py

@@ -7,48 +7,51 @@ ytmusic = YTMusic("config.json")
 #	created a config file following the docs here: https://ytmusicapi.readthedocs.io/en/latest/setup.html
 # I tried the "interactive" authentication but wasn't having luck with it
 
-
-#   Add the name of the playlist you want to shuffle here, or provide it as a command line argument
-if sys.argv[1]:
-  to_shuffle = str(sys.argv[1])
-else:
-  to_shuffle = 'playlist name here'
-
-
-
 def get_playlistID(name):
   playlistID = ytmusic.get_library_playlists(limit=100)
   for i in playlistID:
     if i['title'] == name:
       return i['playlistId']
 
-#	back up the playlist, just in case.
-bkup_title = to_shuffle + ' autobackup'
-if get_playlistID(bkup_title):
-  ytmusic.delete_playlist(get_playlistID(bkup_title))
-backup = {}
-backup['source_playlist'] = get_playlistID(to_shuffle)
-backup['title'] = bkup_title
-now = dt.datetime.now()
-now = now.strftime("%Y-%m-%d %H:%M")
-backup['description'] = 'Created ' + now
-ytmusic.create_playlist(**backup)
+if sys.argv[1]:
+  to_shuffle = str(sys.argv[1])
+  to_shuffleID = get_playlistID(to_shuffle)
+else:
+  print("Usage: shuffler.py playlistname")
+  sys.exit()
 
-playlist = ytmusic.get_playlist(get_playlistID(to_shuffle), limit=1000)	#get the songs in the playlist
+try:
+  backup = sys.argv[2]
+  #	back up the playlist if requested
+  bkup_title = to_shuffle + ' autobackup'
+  if get_playlistID(bkup_title):
+    ytmusic.delete_playlist(get_playlistID(bkup_title))
+  backup = {}
+  backup['source_playlist'] = to_shuffleID
+  backup['title'] = bkup_title
+  now = dt.datetime.now()
+  now = now.strftime("%Y-%m-%d %H:%M")
+  backup['description'] = 'Created ' + now
+  ytmusic.create_playlist(**backup)
+  print(f'{bkup_title} created')
+except:
+  track_ids = []  # Python needs SOMETHING here, whatever.
+
+playlist = ytmusic.get_playlist(to_shuffleID, limit=1000)	#get the songs in the playlist
 track_ids = []
 for i in playlist['tracks']:
   track_ids.append(i['videoId'])
+
 np.random.shuffle(track_ids)
-privacy = playlist['privacy']
 
-ytmusic.delete_playlist(get_playlistID(to_shuffle))
+ytmusic.remove_playlist_items(to_shuffleID, playlist['tracks'])
+ytmusic.add_playlist_items(to_shuffleID, track_ids)
 
-shuffled = {}
-shuffled['title'] = to_shuffle
 now = dt.datetime.now()
 now = now.strftime("%Y-%m-%d %H:%M")
+shuffled = {}
+shuffled['playlistId'] = to_shuffleID
 shuffled['description'] = 'Shuffled ' + now
-shuffled['video_ids'] = track_ids
-shuffled['privacy_status'] = privacy
-ytmusic.create_playlist(**shuffled)
+ytmusic.edit_playlist(**shuffled)
+
 print(f'The playlist called \"{to_shuffle}\" has been shuffled!')