It almost works

badwitch.py

@@ -15,6 +15,7 @@ import json
 import logging
 import pathlib
 import sys
+import youtube_dl
 
 class Library:
     # A thing full of albums
@@ -48,18 +49,35 @@ class Library:
             raise Exception('Library not valid')
 
     # Download library
-    def download(self, album=None):
-        if album is not None:
+    def download(self, targetalbum=None):
+        if targetalbum is not None:
             print('Downloading album: ' + album)
         else:
             print('Downloading entire library')
         for album, albumcontent in self.albums.items():
+            # Skip albums that don't match our criterea
+            if targetalbum is not None and not album == targetalbum:
+                logging.debug('Skipping album ' + album)
+                continue
             # God have mercy on my soul
-            artist = (next(iter(next(iter(albumcontent.values())).values())))
-            print(artist)
-            Path(Path.home() / 'Music' / artist / album).mkdir(parents=True, exist_ok=True)
+            artist = next(iter(albumcontent.values()))['artist']
+            destpath = (Path.home() / 'Music' / artist / album)
+            Path(destpath).mkdir(parents=True, exist_ok=True)
             for song, songcontent in albumcontent.items():
-                logging.info('Downloaded song: ' + song + ' by ' + songcontent['artist'])
+                # See if we already have  it
+                matches = sorted(Path(destpath).glob(song + '.*'))
+                if not matches == []:
+                    logging.debug('Using cached song: ' + song)
+                    continue
+                # Download the song
+                ytdl_opts = {
+                        'audio-format': 'best',
+                        'x'
+                        'playlist-items': 1
+                        }
+                with youtube_dl.YoutubeDL(ytdl_opts) as ydl:
+                    ydl.download([songcontent['source']])
+                logging.info('Downloaded song: ' + song)
 
 class BadWitch:
     # Our program
@@ -99,32 +117,41 @@ class BadWitch:
         elif self.args.action == 'list':
             for album, albumcontent in lib.albums.items():
                 for song, songcontent in albumcontent.items():
-                    print(album + ' - ' + song + ' by ' + songcontent['artist'])
+                    print(album
+                            + ' - ' + str(songcontent['track'])
+                            + ' - ' + song
+                            + ' by ' + songcontent['artist'])
             return
         elif self.args.action == 'test':
             # Set up a test album
             lib.albums['Bad Witch'] = {
                     'Shit Mirror': {
+                        'track': 1,
                         'artist': 'Nine Inch Nails',
                         'source': 'https://www.youtube.com/watch?v=yeqjz5mXrLQ'
                         },
                     'Ahead of Ourselves': {
+                        'track': 2,
                         'artist': 'Nine Inch Nails',
                         'source': 'https://www.youtube.com/watch?v=4Ab1O-i4ep4'
                         },
                     'Play the Goddamned Part': {
+                        'track': 3,
                         'artist': 'Nine Inch Nails',
                         'source': 'https://www.youtube.com/watch?v=85UgvBkMfr8'
                         },
                     'God Break Down the Door': {
+                        'track': 4,
                         'artist': 'Nine Inch Nails',
                         'source': 'https://www.youtube.com/watch?v=eeJ_DzRJUI4'
                         },
                     'I\'m Not From This World': {
+                        'track': 5,
                         'artist': 'Nine Inch Nails',
                         'source': 'https://www.youtube.com/watch?v=9fjbcSUSt9w'
                         },
                     'Over and Out': {
+                        'track': 6,
                         'artist': 'Nine Inch Nails',
                         'source': 'https://www.youtube.com/watch?v=h-XlN3N2fis'
                         }

requirements.txt

@@ -1 +1,2 @@
 appdirs>=1.4.3
+youtube-dl