Random fallback plugin, honoring MPD/host, more robust plugin

[mpd-sima.git] / sima / lib / plugin.py

diff --git a/sima/lib/plugin.py b/sima/lib/plugin.py
index f846e2e9d16565244f7178d32cede6edaa3da49a..d44abafda47cd6eb142233c97d0d29252d47dedd 100644 (file)
--- a/sima/lib/plugin.py
+++ b/sima/lib/plugin.py
@@ -1,18 +1,56 @@
 # -*- coding: utf-8 -*-
 
 class Plugin():
+    """
+    First non-empty line of the docstring is used as description
+    Rest of the docstring at your convenience.
+
+    The plugin Name MUST be the same as the module (file name), case
+    insensitive: for instance plugin.py → Plugin
+    It eases plugins discovery and simplifies the code to handle them,
+    IMHO, it's a fair trade-off.
+    """
+
+    @classmethod
+    def info(cls):
+        """self documenting class method
+        """
+        doc = 'Undocumented plugin! Fill "{}" docstring'.format(cls.__name__)
+        if cls.__doc__:
+            doc = cls.__doc__.strip(' \n').splitlines()[0]
+        return {'name': cls.__name__,
+                'doc': doc,
+                }
+
     def __init__(self, daemon):
         self.log = daemon.log
         self.__daemon = daemon
-        #self.history = daemon.player.history
+        self.plugin_conf = None
+        self.__get_config()
 
-    @property
-    def name(self):
-        return self.__class__.__name__.lower()
+    def __str__(self):
+        return self.__class__.__name__
+
+    def __get_config(self):
+        """Get plugin's specific configuration from global applications's config
+        """
+        conf = self.__daemon.config
+        for sec in conf.sections():
+            if sec.lower() == self.__class__.__name__.lower():
+                self.plugin_conf = dict(conf.items(sec))
+        #if self.plugin_conf:
+        #    self.log.debug('Got config for {0}: {1}'.format(self,
+        #                                                    self.plugin_conf))
 
     def callback_player(self):
         """
-        Called on player changes
+        Called on player changes, stopped, paused, skipped
+        """
+        pass
+
+    def callback_player_database(self):
+        """
+        Called on player music library changes
         """
         pass
 
@@ -26,15 +64,21 @@ class Plugin():
 
     def callback_next_song(self):
         """Not returning data,
-        Could be use to scrobble
+        Could be use to scrobble, maintain an history…
         """
         pass
 
-    def callback_need_song(self):
+    def callback_need_track(self):
         """Returns a list of Track objects to add
         """
         pass
 
+    def callback_need_track_fb(self):
+        """Called when callback_next_song failled to find tracks to queue
+        Returns a list of Track objects to add
+        """
+        pass
+
     def shutdown(self):
         pass