Activate kodi media player progress bar (#17626)

* Added code for progress bar

* Added doc string

* Using in

* More cleaning

* Only update position if needed.

homeassistant/components/media_player/kodi.py

@@ -33,6 +33,7 @@ from homeassistant.helpers import script
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from homeassistant.helpers.template import Template
 from homeassistant.util.yaml import dump
+import homeassistant.util.dt as dt_util
 
 REQUIREMENTS = ['jsonrpc-async==0.6', 'jsonrpc-websocket==0.6']
 
@@ -281,6 +282,8 @@ class KodiDevice(MediaPlayerDevice):
         self.hass = hass
         self._name = name
         self._unique_id = unique_id
+        self._media_position_updated_at = None
+        self._media_position = None
 
         kwargs = {
             'timeout': timeout,
@@ -313,6 +316,7 @@ class KodiDevice(MediaPlayerDevice):
             self._ws_server.Player.OnAVChange = self.async_on_speed_event
             self._ws_server.Player.OnResume = self.async_on_speed_event
             self._ws_server.Player.OnSpeedChanged = self.async_on_speed_event
+            self._ws_server.Player.OnSeek = self.async_on_speed_event
             self._ws_server.Player.OnStop = self.async_on_stop
             self._ws_server.Application.OnVolumeChanged = \
                 self.async_on_volume_changed
@@ -371,6 +375,8 @@ class KodiDevice(MediaPlayerDevice):
         self._players = []
         self._properties = {}
         self._item = {}
+        self._media_position_updated_at = None
+        self._media_position = None
         self.async_schedule_update_ha_state()
 
     @callback
@@ -473,6 +479,11 @@ class KodiDevice(MediaPlayerDevice):
                 ['time', 'totaltime', 'speed', 'live']
             )
 
+            position = self._properties['time']
+            if self._media_position != position:
+                self._media_position_updated_at = dt_util.utcnow()
+                self._media_position = position
+
             self._item = (await self.server.Player.GetItem(
                 player_id,
                 ['title', 'file', 'uniqueid', 'thumbnail', 'artist',
@@ -482,6 +493,8 @@ class KodiDevice(MediaPlayerDevice):
             self._properties = {}
             self._item = {}
             self._app_properties = {}
+            self._media_position = None
+            self._media_position_updated_at = None
 
     @property
     def server(self):
@@ -543,6 +556,24 @@ class KodiDevice(MediaPlayerDevice):
             total_time['minutes'] * 60 +
             total_time['seconds'])
 
+    @property
+    def media_position(self):
+        """Position of current playing media in seconds."""
+        time = self._properties.get('time')
+
+        if time is None:
+            return None
+
+        return (
+            time['hours'] * 3600 +
+            time['minutes'] * 60 +
+            time['seconds'])
+
+    @property
+    def media_position_updated_at(self):
+        """Last valid time of media position."""
+        return self._media_position_updated_at
+
     @property
     def media_image_url(self):
         """Image url of current playing media."""