lastfm: Define extension

mopidy/frontends/lastfm/__init__.py

@@ -0,0 +1,55 @@
+from __future__ import unicode_literals
+
+import mopidy
+from mopidy import ext
+from mopidy.exceptions import ExtensionError
+
+
+__doc__ = """
+Frontend which scrobbles the music you play to your `Last.fm
+<http://www.last.fm>`_ profile.
+
+.. note::
+
+    This frontend requires a free user account at Last.fm.
+
+**Dependencies:**
+
+.. literalinclude:: ../../../requirements/lastfm.txt
+
+**Settings:**
+
+- :attr:`mopidy.settings.LASTFM_USERNAME`
+- :attr:`mopidy.settings.LASTFM_PASSWORD`
+
+**Usage:**
+
+Make sure :attr:`mopidy.settings.FRONTENDS` includes
+``mopidy.frontends.lastfm.LastfmFrontend``. By default, the setting includes
+the Last.fm frontend.
+"""
+
+
+# TODO Move import into method when FRONTENDS setting is removed
+from .actor import LastfmFrontend
+
+
+class Extension(ext.Extension):
+
+    name = 'Mopidy-Lastfm'
+    version = mopidy.__version__
+
+    def get_default_config(self):
+        return '[lastfm]'
+
+    def validate_config(self, config):
+        pass
+
+    def validate_environment(self):
+        try:
+            import pylast  # noqa
+        except ImportError as e:
+            raise ExtensionError('pylast library not found', e)
+
+    def get_frontend_classes(self):
+        return [LastfmFrontend]

mopidy/frontends/lastfm/actor.py

@@ -1,27 +1,3 @@
-"""
-Frontend which scrobbles the music you play to your `Last.fm
-<http://www.last.fm>`_ profile.
-
-.. note::
-
-    This frontend requires a free user account at Last.fm.
-
-**Dependencies:**
-
-.. literalinclude:: ../../../requirements/lastfm.txt
-
-**Settings:**
-
-- :attr:`mopidy.settings.LASTFM_USERNAME`
-- :attr:`mopidy.settings.LASTFM_PASSWORD`
-
-**Usage:**
-
-Make sure :attr:`mopidy.settings.FRONTENDS` includes
-``mopidy.frontends.lastfm.LastfmFrontend``. By default, the setting includes
-the Last.fm frontend.
-"""
-
 from __future__ import unicode_literals
 
 import logging

setup.py

@@ -46,6 +46,7 @@ setup(
         ],
         b'mopidy.extension': [
             'http = mopidy.frontends.http:Extension',
+            'lastfm = mopidy.frontends.lastfm:Extension',
             'local = mopidy.backends.local:Extension',
             'mpd = mopidy.frontends.mpd:Extension',
             'mpris = mopidy.frontends.mpris:Extension',