namespace MyNes.Core;

[BoardInfo("Unknown", 230)]
[HassIssues]
internal class Mapper230 : Board
{
	private bool contraMode;

	internal override string Issues => MNInterfaceLanguage.IssueMapper230;

	internal override void HardReset()
	{
		base.HardReset();
		contraMode = true;
		Switch16KPRG(0, PRGArea.Area8000);
		Switch16KPRG(7, PRGArea.AreaC000);
	}

	internal override void SoftReset()
	{
		base.SoftReset();
		contraMode = !contraMode;
		if (contraMode)
		{
			Switch16KPRG(0, PRGArea.Area8000);
			Switch16KPRG(7, PRGArea.AreaC000);
			Switch01KNMTFromMirroring(Mirroring.Vert);
		}
		else
		{
			Switch08KCHR(0);
			Switch16KPRG(8, PRGArea.Area8000);
			Switch16KPRG(39, PRGArea.AreaC000);
		}
	}

	internal override void WritePRG(ref ushort address, ref byte data)
	{
		if (contraMode)
		{
			Switch16KPRG(data & 7, PRGArea.Area8000);
			Switch16KPRG(7, PRGArea.AreaC000);
			Switch01KNMTFromMirroring(Mirroring.Vert);
			return;
		}
		Switch01KNMTFromMirroring(((data & 0x40) == 64) ? Mirroring.Vert : Mirroring.Horz);
		if ((data & 0x20) == 32)
		{
			Switch16KPRG((data & 0x1F) + 8, PRGArea.Area8000);
			Switch16KPRG((data & 0x1F) + 8, PRGArea.AreaC000);
		}
		else
		{
			Switch32KPRG(((data & 0x1F) >> 1) + 4, PRGArea.Area8000);
		}
	}
}