using static VirtualNes.MMU;
using static VirtualNes.Core.CPU;
using INT = System.Int32;
using BYTE = System.Byte;
using System;
//using Codice.CM.Client.Differences;

namespace VirtualNes.Core
{
	public class Mapper088 : Mapper
	{
		BYTE reg;
		BYTE patch;
		public Mapper088(NES parent) : base(parent)
		{
		}

		public override void Reset()

		{
			SetPROM_32K_Bank(0, 1, PROM_8K_SIZE - 2, PROM_8K_SIZE - 1);

			if (VROM_1K_SIZE >= 8)
			{
				SetVROM_8K_Bank(0);
			}
			patch = 0;

			uint crc = nes.rom.GetPROM_CRC();
			if (crc == 0xc1b6b2a6)
			{ // Devil Man(J)
				patch = 1;
				nes.SetRenderMethod(EnumRenderMethod.POST_RENDER);
			}
			if (crc == 0xd9803a35)
			{   // Quinty(J)
				nes.SetRenderMethod(EnumRenderMethod.POST_RENDER);
			}
		}

		//void Mapper088::Write(WORD addr, BYTE data)
		public override void Write(ushort addr, byte data)
		{
			switch (addr)
			{
				case 0x8000:
					reg = data;
					if (patch != 0)
					{
						if ((data & 0x40) != 0) SetVRAM_Mirror(VRAM_MIRROR4H);
						else SetVRAM_Mirror(VRAM_MIRROR4L);
					}
					break;
				case 0x8001:
					switch (reg & 0x07)
					{
						case 0:
							SetVROM_2K_Bank(0, data >> 1);
							break;
						case 1:
							SetVROM_2K_Bank(2, data >> 1);
							break;
						case 2:
							SetVROM_1K_Bank(4, data + 0x40);
							break;
						case 3:
							SetVROM_1K_Bank(5, data + 0x40);
							break;
						case 4:
							SetVROM_1K_Bank(6, data + 0x40);
							break;
						case 5:
							SetVROM_1K_Bank(7, data + 0x40);
							break;
						case 6:
							SetPROM_8K_Bank(4, data);
							break;
						case 7:
							SetPROM_8K_Bank(5, data);
							break;
					}
					break;
				case 0xC000:
					if (data != 0) SetVRAM_Mirror(VRAM_MIRROR4H);
					else SetVRAM_Mirror(VRAM_MIRROR4L);
					break;
			}
		}

		//void Mapper088::SaveState(LPBYTE p)
		public override void SaveState(byte[] p)
		{
			p[0] = reg;
		}

		//void Mapper088::LoadState(LPBYTE p)
		public override void LoadState(byte[] p)
		{
			reg = p[0];
		}

		public override bool IsStateSave()
		{
			return true;
		}
	}
}