using System.IO;

using BizHawk.Common;
using BizHawk.Emulation.Common;

namespace BizHawk.Emulation.Cores.ColecoVision
{
	public partial class ColecoVision : IStatable
	{
		public bool BinarySaveStatesPreferred
		{
			get { return true; }
		}

		public void SaveStateText(TextWriter writer)
		{
			SyncState(new Serializer(writer));
		}

		public void LoadStateText(TextReader reader)
		{
			SyncState(new Serializer(reader));
		}

		public void SaveStateBinary(BinaryWriter bw)
		{
			SyncState(new Serializer(bw));
		}

		public void LoadStateBinary(BinaryReader br)
		{
			SyncState(new Serializer(br));
		}

		public byte[] SaveStateBinary()
		{
			MemoryStream ms = new MemoryStream();
			BinaryWriter bw = new BinaryWriter(ms);
			SaveStateBinary(bw);
			bw.Flush();
			return ms.ToArray();
		}

		private void SyncState(Serializer ser)
		{
			byte[] core = null;
			if (ser.IsWriter)
			{
				var ms = new MemoryStream();
				ms.Close();
				core = ms.ToArray();
			}
			_cpu.SyncState(ser);

			ser.BeginSection("Coleco");		
			_vdp.SyncState(ser);
			ControllerDeck.SyncState(ser);
			PSG.SyncState(ser);
			SGM_sound.SyncState(ser);
			ser.Sync("UseSGM", ref use_SGM);
			ser.Sync("is_MC", ref is_MC);
			ser.Sync("MC_bank", ref MC_bank);
			ser.Sync("EnableSGMhigh", ref enable_SGM_high);
			ser.Sync("EnableSGMlow", ref enable_SGM_low);
			ser.Sync("Port_0x53", ref port_0x53);
			ser.Sync("Port_0x7F", ref port_0x7F);
			ser.Sync("RAM", ref _ram, false);
			ser.Sync("SGM_high_RAM", ref SGM_high_RAM, false);
			ser.Sync("SGM_low_RAM", ref SGM_low_RAM, false);
			ser.Sync("Frame", ref _frame);
			ser.Sync("LagCount", ref _lagCount);
			ser.Sync("IsLag", ref _isLag);

			ser.EndSection();

			if (ser.IsReader)
			{
				SyncAllByteArrayDomains();
			}
		}

		private byte[] _stateBuffer;
	}
}
