(scripts) Improve retrieve rating for albums

iTunesParser.py

@@ -187,7 +187,6 @@ class ITunesParser:
                 'Album': akey,
                 'Track Count': 0,
                 'Play Count': 0,
-                'Rating': 0,
                 'Genre': set(),
                 'Artist': set(),
                 'Avg Bit Rate': track['Bit Rate'],
@@ -199,22 +198,18 @@ class ITunesParser:
         # Compute information
         play_count = track['Play Count'] if 'Play Count' in track else 0
 
-        rating = track['Rating'] if 'Rating' in track else 0
-        rating = self.calc_average(rating, self._albums[akey]['Rating'], self._albums[akey]['Track Count'])
-
         total_time = track['Total Time'] if 'Total Time' in track else 0
 
+        avg_bitrate = self.calc_average(track['Bit Rate'], self._albums[akey]['Avg Bit Rate'], self._albums[akey]['Track Count'])
+
+        self._albums[akey]['Avg Bit Rate'] = avg_bitrate
+        self._albums[akey]['Track Count'] += 1
+        self._albums[akey]['Play Count'] += play_count
+        self._albums[akey]['Total Time'] += total_time
+
         if self._albums[akey]['Min Bit Rate'] > track['Bit Rate']:
             self._albums[akey]['Min Bit Rate'] = track['Bit Rate']
 
-        avg_bitrate = self.calc_average(track['Bit Rate'], self._albums[akey]['Avg Bit Rate'], self._albums[akey]['Track Count'])
-        self._albums[akey]['Avg Bit Rate'] = avg_bitrate
-
-        self._albums[akey]['Track Count'] += 1
-        self._albums[akey]['Rating'] = rating
-        self._albums[akey]['Play Count'] += play_count
-        self._albums[akey]['Total Time'] += total_time
-
         if 'Genre' in track:
             # Split up the Genres
             genre_parts = track['Genre'].split('/')
@@ -225,7 +220,9 @@ class ITunesParser:
 
         if 'Album Rating' in track:
             self._albums[akey]['Album Rating'] = track['Album Rating']
-            self._albums[akey]['Album Rating Computed'] = True
+
+        if 'Album Rating Computed' in track:
+            self._albums[akey]['Album Rating Computed'] = track['Album Rating Computed']
 
         if 'Album Artist' in track:
             self._albums[akey]['Album Artist'] = track['Album Artist']
@@ -278,7 +275,6 @@ class WriteElsJson:
         file_albums = io.open(output_file, 'wb')
         for _, album in albums.items():
             persistent_id = album['Persistent ID']
-            album['Rating'] = round(album['Rating'])
             album['Avg Bit Rate'] = round(album['Avg Bit Rate'])
 
             json_track_index = {