curds: Add playlists for individual years

They show up nested under the corresponding decade playlist

Signed-off-by: Anna Schumaker <Anna@NoWheyCreamery.com>

curds/playlist/decade.py

@@ -4,14 +4,23 @@ from . import playlist
 from .. import notify
 
 class DecadePlaylist(playlist.Playlist):
-    def __init__(self, track):
-        playlist.Playlist.__init__(self, track["date"], "x-office-calendar")
+    def __init__(self, track, icon):
+        playlist.Playlist.__init__(self, track["date"], icon)
 
     def __normalize__(self, name):
         if isinstance(name, int):
             return f"{int(name / 10) * 10}s"
         return name
 
+    def add(self, track):
+        playlist.Playlist.add(self, track)
+        ylist = self.lookup(str(track["date"]))
+        if ylist == None:
+            ylist = playlist.Playlist(str(track["date"]), self.icon)
+            self.insert_child(ylist)
+        ylist.add(track)
+
+
 class DecadeNode(node.PlaylistNode):
     def __init__(self):
         node.PlaylistNode.__init__(self, "Decades", "x-office-calendar")
@@ -25,7 +34,7 @@ class DecadeNode(node.PlaylistNode):
     def new_track(self, track):
         plist = self.lookup(track["date"])
         if plist == None:
-            plist = DecadePlaylist(track)
+            plist = DecadePlaylist(track, self.icon)
             self.insert_child(plist)
         plist.add(track)
 

curds/playlist/test_decade.py

@@ -31,6 +31,13 @@ class TestDecadePlaylist(unittest.TestCase):
         self.assertEqual(len(plist), 1)
         self.assertEqual(plist[0], track1)
 
+        self.assertEqual(plist.n_children(), 1)
+        ylist = plist.nth_child(0)
+        self.assertEqual(ylist.name, "1973")
+        self.assertEqual(ylist.icon, "x-office-calendar")
+        self.assertEqual(len(ylist), 1)
+        self.assertEqual(ylist[0], track1)
+
 
         track2 = tags.Track.lookup(os.path.join(test_library, test_album2))
         self.assertEqual(dnode.n_children(), 2)
@@ -44,6 +51,15 @@ class TestDecadePlaylist(unittest.TestCase):
         self.assertEqual(dnode.n_children(), 2)
         self.assertEqual(len(plist), 2)
 
+        self.assertEqual(plist.n_children(), 1)
+        ylist = plist.nth_child(0)
+        self.assertEqual(ylist.name, "1982")
+        self.assertEqual(ylist.icon, "x-office-calendar")
+        self.assertEqual(len(ylist), 2)
+        self.assertEqual(ylist[0], track2)
+        self.assertEqual(ylist[1], track3)
+
+
         notify.cancel("new-track", dnode.new_track)
         dnode.reset()
         self.assertEqual(dnode.n_children(), 0)