using System;
using System.Collections.Generic;

using BizHawk.Emulation.Common;

namespace BizHawk.Emulation.Cores.Nintendo.SNES
{
	public partial class LibsnesCore : IDebuggable
	{
		public IDictionary<string, RegisterValue> GetCpuFlagsAndRegisters()
		{
			LibsnesApi.CPURegs regs;
			Api.QUERY_peek_cpu_regs(out regs);

			bool fn = (regs.p & 0x80) != 0;
			bool fv = (regs.p & 0x40) != 0;
			bool fm = (regs.p & 0x20) != 0;
			bool fx = (regs.p & 0x10) != 0;
			bool fd = (regs.p & 0x08) != 0;
			bool fi = (regs.p & 0x04) != 0;
			bool fz = (regs.p & 0x02) != 0;
			bool fc = (regs.p & 0x01) != 0;

			return new Dictionary<string, RegisterValue>
			{
				{ "PC", regs.pc },
				{ "A", regs.a },
				{ "X", regs.x },
				{ "Y", regs.y },
				{ "Z", regs.z },
				{ "S", regs.s },
				{ "D", regs.d },
				{ "Vector", regs.vector },
				{ "P", regs.p },
				{ "AA", regs.aa },
				{ "RD", regs.rd },
				{ "SP", regs.sp },
				{ "DP", regs.dp },
				{ "DB", regs.db },
				{ "MDR", regs.mdr },
				{ "Flag N", fn },
				{ "Flag V", fv },
				{ "Flag M", fm },
				{ "Flag X", fx },
				{ "Flag D", fd },
				{ "Flag I", fi },
				{ "Flag Z", fz },
				{ "Flag C", fc },
			};
		}

		[FeatureNotImplemented]
		public void SetCpuRegister(string register, int value)
		{
			throw new NotImplementedException();
		}

		public IMemoryCallbackSystem MemoryCallbacks { get; } = new MemoryCallbackSystem();

		public bool CanStep(StepType type)
		{
			return false;
		}

		[FeatureNotImplemented]
		public void Step(StepType type)
		{
			throw new NotImplementedException();
		}

		[FeatureNotImplemented]
		public int TotalExecutedCycles
		{
			get { throw new NotImplementedException(); }
		}
	}
}