fix issue #254. albums now store their path, which is unique to an album. this means that the album artist does not have to be set for a compilation to be correctly grouped as one album instead of one album per artist.

supysonic/db.py

@@ -258,6 +258,7 @@ class Album(_Model):
     id = PrimaryKeyField()
     name = CharField()
     artist = ForeignKeyField(Artist, backref="albums")
+    folder = ForeignKeyField(Folder, backref="albums")
 
     def as_subsonic_album(self, user):  # "AlbumID3" type in XSD
         duration, created, year = self.tracks.select(
@@ -268,6 +269,7 @@ class Album(_Model):
             "id": str(self.id),
             "name": self.name,
             "artist": self.artist.name,
+            "folderId": str(self.folder_id),
             "artistId": str(self.artist.id),
             "songCount": self.tracks.count(),
             "duration": duration,

supysonic/scanner.py

@@ -247,7 +247,7 @@ class Scanner(Thread):
         trdict["bitrate"] = tag.bitrate // 1000
         trdict["last_modification"] = mtime
 
-        tralbum = self.__find_album(albumartist, album)
+        tralbum = self.__find_album(albumartist, album, path)
         trartist = self.__find_artist(artist)
 
         if tr is None:
@@ -363,14 +363,23 @@ class Scanner(Thread):
                 folder.cover_art = cover_name
                 folder.save()
 
-    def __find_album(self, artist, album):
+    def __find_album(self, artist, album, track_path):
         ar = self.__find_artist(artist)
         al = ar.albums.where(Album.name == album).first()
         if al:
             return al
-
+        try:
+            folder=self.__find_folder(track_path)
+            folder_id=folder.id
+            al = folder.albums.first()
+            if al:
+                if(al.folder.path == folder.path and al.folder.name == folder.name):
+                    return al
             self.__stats.added.albums += 1
-        return Album.create(name=album, artist=ar)
+            return Album.create(name=album, artist=ar, folder_id=folder_id)
+        except Album.DoesNotExist:
+        self.__stats.added.albums += 1
+            return Album.create(name=album, artist=ar, folder_id=folder_id)
 
     def __find_artist(self, artist):
         try:

supysonic/schema/mysql.sql

@@ -19,9 +19,11 @@ CREATE TABLE IF NOT EXISTS artist (
 CREATE TABLE IF NOT EXISTS album (
     id CHAR(32) PRIMARY KEY,
     name VARCHAR(256) NOT NULL,
-    artist_id CHAR(32) NOT NULL REFERENCES artist(id)
+    artist_id CHAR(32) NOT NULL REFERENCES artist(id),
+    folder_id INTEGER NOT NULL REFERENCES folder
 ) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
 CREATE INDEX index_album_artist_id_fk ON album(artist_id);
+CREATE INDEX index_album_folder_id_fk ON album(folder_id);
 
 CREATE TABLE IF NOT EXISTS track (
     id CHAR(32) PRIMARY KEY,

supysonic/schema/postgres.sql

@@ -19,9 +19,11 @@ CREATE TABLE IF NOT EXISTS artist (
 CREATE TABLE IF NOT EXISTS album (
     id UUID PRIMARY KEY,
     name CITEXT NOT NULL,
-    artist_id UUID NOT NULL REFERENCES artist
+    artist_id UUID NOT NULL REFERENCES artist,
+    folder_id INTEGER NOT NULL REFERENCES folder
 );
 CREATE INDEX IF NOT EXISTS index_album_artist_id_fk ON album(artist_id);
+CREATE INDEX IF NOT EXISTS index_album_folder_id_fk ON album(folder_id);
 
 CREATE TABLE IF NOT EXISTS track (
     id UUID PRIMARY KEY,

supysonic/schema/sqlite.sql

@@ -20,9 +20,11 @@ CREATE TABLE IF NOT EXISTS artist (
 CREATE TABLE IF NOT EXISTS album (
     id CHAR(36) PRIMARY KEY,
     name VARCHAR(256) NOT NULL COLLATE NOCASE,
-    artist_id CHAR(36) NOT NULL REFERENCES artist
+    artist_id CHAR(36) NOT NULL REFERENCES artist,
+    folder_id INTEGER NOT NULL REFERENCES folder
 );
 CREATE INDEX IF NOT EXISTS index_album_artist_id_fk ON album(artist_id);
+CREATE INDEX IF NOT EXISTS index_album_folder_id_fk ON album(folder_id);
 
 CREATE TABLE IF NOT EXISTS track (
     id CHAR(36) PRIMARY KEY,