/* 

   Copyright (C) Arnaud Houdelette		2012-2014
   Copyright (C) Emmanuel Langlois		2012-2014

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY 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 System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Threading;

namespace DMX2
{
	public class SequenceurSon : Sequenceur
	{

		SeqSonUI ui=null;

		static bool gsinit=false;

		List<string> files = new List<string>();

		string curfile = string.Empty;

		uint volume=100;

		Gst.Element element = null;

		public ReadOnlyCollection<string> Files {
			get {
				return files.AsReadOnly();
			}
		}

		public string CurFile {
			get{return curfile; }
		}

		public int Index {
			get {
				return files.IndexOf (curfile);
			}
			set {
				if(value>=0 && value< files.Count)
					LoadFile(value);
			}
		}

		public int AddFile (int pos, string file)
		{
			lock (this) {
				files.Insert (pos, file);
				//CommandAdd(pos);
				return pos;
			}
		}

		public uint Volume {
			get{ return volume;}
			set {
				volume=value;
				if(element!=null)
					element["volume"] = (double)volume / 100.0d ;
			}
		}

		public void DelFile (int pos)
		{
			lock (this) {

				files.RemoveAt (pos);
				//CommandRemove(pos);
			}
		}

		void LoadFile (int pos)
		{
			curfile = files[pos];
			if (element != null) {
				element.SetState(Gst.State.Null);
				element.Dispose();
			}

			Uri uri = new Uri(curfile);

			element = Gst.ElementFactory.Make("playbin2");
			element["uri"] = uri.AbsoluteUri;
			element.SetState(Gst.State.Paused);
		}

		public void Play ()
		{
			if(element == null)return;
			element.SetState(Gst.State.Playing);
		}
		public void Pause ()
		{
			if(element == null)return;
			element.SetState(Gst.State.Paused);
		}
		public void Stop ()
		{
			if(element == null)return;
			element.SetState(Gst.State.Null);
			element.Dispose();
			element=null;
		}

		public void MoveTo(ulong pos){

		}

		static void GstInit ()
		{
			if(gsinit) return;
			gsinit=true;
			string[] args = new string[] {"--gst-disable-segtrap"};
			Gst.Application.Init("dmx2", ref args );

		}

		public SequenceurSon ()
		{
			GstInit();
		}
		#region implemented abstract members of DMX2.Sequenceur
		public override SequenceurUI GetUI ()
		{

			if (ui == null) {
				ui = new SeqSonUI (this);
				ui.Destroyed += UiDestroyed;
			}

			return ui;
		}

		void UiDestroyed (object sender, EventArgs e)
		{
			//throw new NotImplementedException ();
		}
		public override int ValeurCircuit (Circuit c)
		{
			return 0;
		}

		public override void Tick (TimeSpan time)
		{
			//throw new System.NotImplementedException ();
		}

		public override void Save (System.Xml.XmlElement parent)
		{
			//throw new System.NotImplementedException ();
		}

		public override void Command (string command)
		{
			//throw new System.NotImplementedException ();
		}
		#endregion

	}
}