From 78482a6cec42aabd8735a71277ce3e2c78ab8b9a Mon Sep 17 00:00:00 2001
From: Anton Khirnov <wyskas@gmail.com>
Date: Mon, 18 May 2009 20:15:53 +0200
Subject: [PATCH] mpclient: use stats cmd to query db update.

---
 nephilim/mpclient.py | 37 ++++++++++++++++++++++++-------------
 1 file changed, 24 insertions(+), 13 deletions(-)

diff --git a/nephilim/mpclient.py b/nephilim/mpclient.py
index 9b1a948..de7e81f 100644
--- a/nephilim/mpclient.py
+++ b/nephilim/mpclient.py
@@ -32,11 +32,13 @@ class MPClient(QtCore.QObject):
     _status       = {'volume' : 0, 'repeat'   : 0, 'random'         : 0,
                      'songid' : 0, 'playlist' : 0, 'playlistlength' : 0,
                      'time'   : 0, 'length'   : 0, 'xfade'          : 0,
-                     'updatings_db' : 0,'state'  : 'stop', 'single' : 0,
+                     'state'  : 'stop', 'single' : 0,
                      'consume' : 0}
     _commands     = None
 
-    _timer_id     = None
+    _timer_id     = None    #for querying status changes
+    _db_timer_id  = None    #for querying db updates
+    _db_update    = None    #time of last db update
 
     _retr_mutex = QtCore.QMutex()
 
@@ -82,8 +84,8 @@ class MPClient(QtCore.QObject):
 
         self.emit(QtCore.SIGNAL('connected'))
         self.logger.info('Successfully connected to MPD.')
-        self.timerEvent(None)
-        self._timer_id = self.startTimer(500)
+        self._timer_id    = self.startTimer(500)
+        self._db_timer_id = self.startTimer(10000)
         return True
     def disconnect_mpd(self):
         """Disconnect from MPD."""
@@ -101,6 +103,9 @@ class MPClient(QtCore.QObject):
         if self._timer_id:
             self.killTimer(self._timer_id)
             self._timer_id = None
+        if self._db_timer_id:
+            self.killTimer(self._db_timer_id)
+            self._db_timer_id = None
         self._status       = dict(MPClient._status)
         self._cur_song     = None
         self._cur_lib      = []
@@ -192,6 +197,9 @@ class MPClient(QtCore.QObject):
     def commands(self):
         """List all currently available MPD commands."""
         return self._commands
+    def stats(self):
+        """Get MPD statistics."""
+        return self._retrieve(self._client.stats)
 
     def repeat(self, val):
         """Set repeat playlist to val (True/False)."""
@@ -234,7 +242,7 @@ class MPClient(QtCore.QObject):
 
     def play(self, id = None):
         """Play song with ID id or next song if id is None."""
-        self.logger.info('Starting playback %s.'%('of id %d'%id if id else ''))
+        self.logger.info('Starting playback %s.'%('of id %s'%(id) if id else ''))
         if not self._check_command_ok('play'):
             return
         if id:
@@ -309,6 +317,7 @@ class MPClient(QtCore.QObject):
             self.logger.error('Error adding files: %s.'%e)
         self._update_playlist()
         if self._status['state'] == 'stop' and ret:
+            print ret
             self.play(ret[0])
     def move(self, source, target):
         """Move the songs in playlist. Takes a list of source ids and one target position."""
@@ -377,8 +386,6 @@ class MPClient(QtCore.QObject):
             ret['length'] = 0
             ret['time']   = 0
 
-        if not 'updatings_db' in ret:
-            ret['updatings_db'] = 0
         if not 'songid' in ret:
             ret['songid'] = -1
 
@@ -392,6 +399,16 @@ class MPClient(QtCore.QObject):
 
     def timerEvent(self, event):
         """Check for changes since last check."""
+        if event.timerId == self._db_timer_id:
+            #timer for monitoring db changes
+            db_update = self.stats()['db_update']
+            if db_update > self._db_update:
+                self.logger.info('Database updated.')
+                self._db_update = db_update
+                self.emit(QtCore.SIGNAL('db_updated'))
+            return
+
+
         old_status = self._status
         self._status = self._update_status()
 
@@ -427,9 +444,3 @@ class MPClient(QtCore.QObject):
         if self._status['playlist'] != old_status['playlist']:
             self._update_playlist()
             self.emit(QtCore.SIGNAL('playlist_changed'))
-
-        if self._status['updatings_db'] and not old_status['updatings_db']:
-            self.emit(QtCore.SIGNAL('update_started'))
-        if not self._status['updatings_db'] and old_status['updatings_db']:
-            self._update_lib()
-            self.emit(QtCore.SIGNAL('update_finished'))
-- 
2.11.4.GIT