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/*
This service primarily controls PulseAudio and is driven by the sound indicator menu on the panel.
Copyright 2010 Canonical Ltd.

Authors:
    Conor Curran <conor.curran@canonical.com>

This program is free software: you can redistribute it and/or modify it 
under the terms of the GNU General Public License version 3, as published 
by the Free Software Foundation.

This program is distributed in the hope that it will be useful, but 
WITHOUT ANY WARRANTY; without even the implied warranties of 
MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR 
PURPOSE.  See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along 
with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
using Gee;
/*
 This class will entirely replace mpris-controller.vala hence why there is no
 point in trying to get encorporate both into the same object model. 
 */
public class Mpris2Controller
{		
	private DBus.Connection connection;
	public dynamic DBus.Object mpris_root	
	public dynamic DBus.Object mpris_player	
	public PlayerController owner {get; construct;}	
	
	public Mpris2Controller(PlayerController ctrl)
	{
		Object(owner: ctrl);				
	}
	
	construct{
    try {
      this.connection = DBus.Bus.get (DBus.BusType.SESSION);
    } catch (Error e) {
      error("Problems connecting to the session bus - %s", e.message);
    }		
		this.mpris_root = this.connection.get_object ("org.mpris.mediaplayers.".concat(this.owner.name.down()),
		                                              "/org/mpris/MediaPlayer", 
		                                              "org.mpris.MediaPlayer");				

		this.mpris_player = this.connection.get_object ("org.mpris.mediaplayers.".concat(this.owner.name.down()) ,
		                                                "/org/mpris/MediaPlayer/Player", 
		                                                "org.mpris.MediaPlayer.Player");				


		this.mpris_player.TrackChange += onTrackChange;	
    this.mpris_player.StatusChange += onStatusChange;	
		initial_update();
	}
	
	private void initial_update()
	{
		status st = this.mpris_player.Status;
		int play_state =  st.playback;
		debug("GetStatusChange - play state %i", play_state);
		(this.owner.custom_items[PlayerController.widget_order.TRANSPORT] as TransportMenuitem).change_play_state(play_state);
		this.owner.custom_items[PlayerController.widget_order.METADATA].update(this.mpris_player.GetMetadata(),
		                            MetadataMenuitem.attributes_format());
		this.owner.custom_items[PlayerController.widget_order.SCRUB].update(this.mpris_player.GetMetadata(),
		                        ScrubMenuitem.attributes_format());		
		// temporary fix
		ScrubMenuitem scrub = this.owner.custom_items[PlayerController.widget_order.SCRUB] as ScrubMenuitem;
		scrub.update_position(this.mpris_player.PositionGet());		
	}

	public void transport_event(TransportMenuitem.action command)
	{
		debug("transport_event input = %i", (int)command);
		if(command == TransportMenuitem.action.PLAY_PAUSE){
			debug("transport_event PLAY_PAUSE");
			this.mpris_player.Pause();							
		}
		else if(command == TransportMenuitem.action.PREVIOUS){
			this.mpris_player.Prev();
		}
		else if(command == TransportMenuitem.action.NEXT){
			this.mpris_player.Next();
		}
	}

	public void set_position(double position)
	{
		debug("Set position with pos (0-100) %f", position);
		HashTable<string, Value?> data = this.mpris_player.GetMetadata();
		Value? time_value = data.lookup("time");
		if(time_value == null){
			warning("Can't fetch the duration of the track therefore cant set the position");
			return;
		}
		uint32 total_time = time_value.get_uint();
		debug("total time of track = %i", (int)total_time);				
		double new_time_position = total_time * position/100.0;
		debug("new position = %f", (new_time_position * 1000));		
		this.mpris_player.PositionSet((int32)(new_time_position));
		ScrubMenuitem scrub = this.owner.custom_items[PlayerController.widget_order.SCRUB] as ScrubMenuitem;
		scrub.update_position(this.mpris_player.PositionGet());				
	}
	
	public bool connected()
	{
		return (this.mpris_player != null);
	}
	
	private void onStatusChange(dynamic DBus.Object mpris_client, status st)
  {
    debug("onStatusChange - signal received");
		status* status = &st;
		unowned ValueArray ar = (ValueArray)status;		
		int play_state = ar.get_nth(0).get_int();
		debug("onStatusChange - play state %i", play_state);
		HashTable<string, Value?> ht = new HashTable<string, Value?>(str_hash, str_equal);
		Value v = Value(typeof(int));
		v.set_int(play_state);
		ht.insert("state", v); 
		this.owner.custom_items[PlayerController.widget_order.TRANSPORT].update(ht, TransportMenuitem.attributes_format());
		this.owner.custom_items[PlayerController.widget_order.SCRUB].update(ht, ScrubMenuitem.attributes_format());
	}
	
	private void onTrackChange(dynamic DBus.Object mpris_client, HashTable<string,Value?> ht)
	{
		debug("onTrackChange");
		this.owner.custom_items[PlayerController.widget_order.METADATA].reset(MetadataMenuitem.attributes_format());
		this.owner.custom_items[PlayerController.widget_order.SCRUB].reset(ScrubMenuitem.attributes_format());
		this.owner.custom_items[PlayerController.widget_order.METADATA].update(ht,
		                            MetadataMenuitem.attributes_format());
		debug("about to update the duration on the scrub bar");
		this.owner.custom_items[PlayerController.widget_order.SCRUB].update(this.mpris_player.GetMetadata(),
		                        ScrubMenuitem.attributes_format());		
		// temporary fix
		ScrubMenuitem scrub = this.owner.custom_items[PlayerController.widget_order.SCRUB] as ScrubMenuitem;
		scrub.update_position(this.mpris_player.PositionGet());
	}
}