feature: unify into album option in config works now

src/bottle/config.cr

@@ -14,7 +14,7 @@ EXAMPLE_CONFIG = <<-EOP
 #{Style.blue "single_folder_playlist"}: 
   #{Style.blue "enabled"}: #{Style.green "true"}
   #{Style.blue "retain_playlist_order"}: #{Style.green "true"}
-  #{Style.blue "overwrite_album"}: #{Style.green "false"}
+  #{Style.blue "unify_into_album"}: #{Style.green "false"}
 #{Style.dim "===="}
 EOP
 
@@ -28,7 +28,7 @@ module Config
     "client_secret",
     "single_folder_playlist: enabled",
     "single_folder_playlist: retain_playlist_order",
-    "single_folder_playlist: overwrite_album",
+    "single_folder_playlist: unify_into_album",
   ]
 
   @@conf = YAML.parse("")
@@ -67,8 +67,8 @@ module Config
     return @@conf["single_folder_playlist"]["retain_playlist_order"].as_bool
   end
 
-  def overwrite_album? : Bool
+  def unify_into_album? : Bool
-    return @@conf["single_folder_playlist"]["overwrite_album"].as_bool
+    return @@conf["single_folder_playlist"]["unify_into_album"].as_bool
   end
 
   def check_necessities

src/glue/album.cr

@@ -33,7 +33,7 @@ class Album < SpotifyList
       }
     ))
 
-    prepped_data = AlbumTracksMapper.from_json(datum.to_json)
+    prepped_data = TrackMapper.from_json(datum.to_json)
     prepped_data.album = album_metadata
 
     data = parse_to_json(prepped_data.to_json)

src/glue/mapper.cr

@@ -24,18 +24,27 @@ class PlaylistTracksMapper
   )
 end
 
-class AlbumTracksMapper
+class TrackMapper
   JSON.mapping(
     album: {
       type:    JSON::Any,
       nilable: true,
       setter:  true,
     },
-    artists: JSON::Any,
+    artists: {
-    disc_number: Int32,
+      type: Array(JSON::Any),
+      setter: true  
+    },
+    disc_number: {
+      type: Int32,
+      setter: true
+    },
     id: String,
     name: String,
-    track_number: Int32,
+    track_number: {
+      type: Int32,
+      setter: true
+    },
     type: String,
     uri: String
   )

src/glue/playlist.cr

@@ -1,9 +1,13 @@
+require "json"
+
 require "../bottle/config"
 
 require "./song"
 require "./list"
+require "./mapper"
 
 class Playlist < SpotifyList
+  @song_index = 1
   @home_music_directory = Config.music_directory
   @playlist : JSON::Any?
 
@@ -28,6 +32,28 @@ class Playlist < SpotifyList
   def organize_song_metadata(list : JSON::Any, datum : JSON::Any) : JSON::Any
     data = datum
 
+    if Config.retain_playlist_order?
+      track = TrackMapper.from_json(data.to_json)
+      track.track_number = @song_index
+      track.disc_number = 1
+      data = JSON.parse(track.to_json)
+    end
+
+    if Config.unify_into_album?
+      track = TrackMapper.from_json(data.to_json)
+      track.album = JSON.parse(%({
+        "name": "#{list["name"]}",
+        "images": [{"url": "#{list["images"][0]["url"]}"}]
+      }))
+      track.artists.push(JSON.parse(%({
+        "name": "#{list["owner"]["display_name"]}",
+        "owner": true
+      })))
+      data = JSON.parse(track.to_json)
+    end
+
+    @song_index += 1
+
     return data
   end
 

src/glue/song.cr

@@ -40,8 +40,8 @@ class Song
       })
 
       if !@metadata
-        raise("There was no metadata found on Spotify for\n" +
+        raise("There was no metadata found on Spotify for " +
-              %("#{@song_name}" by "#{@artist_name}\n) +
+              %("#{@song_name}" by "#{@artist_name}". ) +
               "Check your input and try again.")
       end
     end
@@ -54,8 +54,8 @@ class Song
     url = Youtube.find_url(@song_name, @artist_name, search_terms: "lyrics")
 
     if !url
-      raise("There was no url found on youtube for\n" +
+      raise("There was no url found on youtube for " +
-            %("#{@song_name}" by "#{@artist_name}\n) +
+            %("#{@song_name}" by "#{@artist_name}. ) +
             "Check your input and try again.")
     end
 
@@ -67,7 +67,12 @@ class Song
       File.write(temp_albumart_filename, response.body_io)
     end
 
+    # check if song's metadata has been modded in playlist, update artist accordingly
+    if data["artists"][-1]["owner"]? 
+      @artist = data["artists"][-1]["name"].to_s
+    else
       @artist = data["artists"][0]["name"].to_s
+    end
     @album = data["album"]["name"].to_s
 
     tagger = Tags.new(@filename)