/****************************************************************************
*                                                                           *
* Project64 - A Nintendo 64 emulator.                                      *
* http://www.pj64-emu.com/                                                  *
* Copyright (C) 2012 Project64. All rights reserved.                        *
*                                                                           *
* License:                                                                  *
* GNU/GPLv2 http://www.gnu.org/licenses/gpl-2.0.html                        *
*                                                                           *
****************************************************************************/

#include "stdafx.h"
#include "DebuggerUI.h"
#include "DMALog.h"

CDebugDMALogView::CDebugDMALogView(CDebuggerUI* debugger) :
CDebugDialog<CDebugDMALogView>(debugger)
{
	m_DMALog = debugger->DMALog();
	m_bFilterChanged = false;
	m_bUniqueRomAddresses = true;
	m_bCustomDrawClrNext = false;
}

CDebugDMALogView::~CDebugDMALogView()
{
}

/*
bool CDebugDMALogView::FilterEntry(int dmaLogIndex)
{
	DMALogEntry entry = m_Debugger->DMALog()->at(dmaLogIndex);

	for (int i = 0; i < dmaLogIndex; i++)
	{
		DMALogEntry testEntry = m_Debugger->DMALog()->at(i);

		// Don't show if another entry has the same ROM address
		if (entry.romAddr == testEntry.romAddr)
		{
			return false;
		}
	}

	return true;
}
*/
void CDebugDMALogView::RefreshList()
{
	if (g_Rom == NULL)
	{
		return;
	}
	
	uint8_t* rom = g_Rom->GetRomAddress();
	
	// Get scrollbar state
	SCROLLINFO scroll;
	scroll.cbSize = sizeof(SCROLLINFO);
	scroll.fMask = SIF_ALL;
	m_DMAList.GetScrollInfo(SB_VERT, &scroll);

	bool bScrolledDown = false;

	if ((scroll.nPage + scroll.nPos) - 1 == (uint32_t)scroll.nMax)
	{
		bScrolledDown = true;
	}

	int startIndex;
	int dmaLogSize = m_Debugger->DMALog()->GetNumEntries();
	
	if (dmaLogSize == 0)
	{
		// Reset
		m_DMAList.DeleteAllItems();
		startIndex = 0;
		m_bFilterChanged = false;
	}
	else
	{
		// Continue from last index
		startIndex = m_nLastStartIndex;
	}
	
	m_DMAList.SetRedraw(FALSE);

	int itemIndex = m_DMAList.GetItemCount();
	
	for (int i = startIndex; i < dmaLogSize; i++)
	{
		DMALOGENTRY* lpEntry = m_DMALog->GetEntryByIndex(i);

		//if (!FilterEntry(i))
		//{
		//	continue;
		//}
		
		m_DMAList.AddItem(itemIndex, 0, stdstr_f("%08X", lpEntry->romAddr).c_str());
		m_DMAList.AddItem(itemIndex, 1, stdstr_f("%08X", lpEntry->ramAddr).c_str());
		m_DMAList.AddItem(itemIndex, 2, stdstr_f("%08X (%d)", lpEntry->length, lpEntry->length).c_str());
		
		uint32_t sig = *(uint32_t*)&rom[lpEntry->romAddr];
		sig = _byteswap_ulong(sig);

		char sigc[5];
		memcpy(sigc, &sig, 4);
		sigc[4] = '\0';

		// Todo checkbox to display all in hex
		if (isalnum(sigc[0]) && isalnum(sigc[1]) && isalnum(sigc[2]) && isalnum(sigc[3]))
		{
			m_DMAList.AddItem(itemIndex, 4, sigc);
		}

		itemIndex++;
	}
	
	if (bScrolledDown)
	{
		m_DMAList.EnsureVisible(m_DMAList.GetItemCount() - 1, FALSE);
	}

	m_DMAList.SetRedraw(TRUE);
	
	m_nLastStartIndex = dmaLogSize;
}

DWORD WINAPI CDebugDMALogView::AutoRefreshProc(void* _this)
{
	CDebugDMALogView* self = (CDebugDMALogView*)_this;
	while (true)
	{
		self->RefreshList();
		Sleep(100);
	}
}

LRESULT CDebugDMALogView::OnActivate(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
	//RefreshList();
	return FALSE;
}

LRESULT CDebugDMALogView::OnInitDialog(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)
{
	DlgResize_Init(false, true);
    DlgSavePos_Init(DebuggerUI_DMALogPos);

	m_bConvertingAddress = false;
	m_nLastStartIndex = 0;

	m_DMAList.Attach(GetDlgItem(IDC_DMA_LIST));

	m_DMAList.ModifyStyle(LVS_OWNERDRAWFIXED, 0, 0);

	m_DMAList.AddColumn("ROM", 0);
	m_DMAList.AddColumn("RAM", 1);
	m_DMAList.AddColumn("Length", 2);
	m_DMAList.AddColumn("Symbol (RAM)", 3);
	m_DMAList.AddColumn("Signature", 4);

	m_DMAList.SetExtendedListViewStyle(LVS_EX_FULLROWSELECT | LVS_EX_DOUBLEBUFFER);

	m_DMAList.SetColumnWidth(0, 65);
	m_DMAList.SetColumnWidth(1, 65);
	m_DMAList.SetColumnWidth(2, 120);
	//m_DMAList.SetColumnWidth(3, 50);
	//m_DMAList.SetColumnWidth(4, 50);
	//m_DMAList.SetColumnWidth(5, 50);

	m_DMARamEdit.Attach(GetDlgItem(IDC_DMA_RAM_EDIT));
	m_DMARamEdit.SetLimitText(8);

	m_DMARomEdit.Attach(GetDlgItem(IDC_DMA_ROM_EDIT));
	m_DMARomEdit.SetLimitText(8);

	m_BlockInfo.Attach(GetDlgItem(IDC_BLOCK_INFO));

	RefreshList();

	LoadWindowPos();
	WindowCreated();

	m_AutoRefreshThread = CreateThread(NULL, 0, AutoRefreshProc, (void*)this, 0, NULL);

	return TRUE;
}

void CDebugDMALogView::OnExitSizeMove(void)
{
    SaveWindowPos();
}

LRESULT CDebugDMALogView::OnDestroy(void)
{
	if (m_AutoRefreshThread != NULL)
	{
		TerminateThread(m_AutoRefreshThread, 0);
		CloseHandle(m_AutoRefreshThread);
	}
	return 0;
}

LRESULT CDebugDMALogView::OnClicked(WORD /*wNotifyCode*/, WORD wID, HWND, BOOL& /*bHandled*/)
{
	switch (wID)
	{
	case IDOK:
		EndDialog(0);
		break;
	case IDCANCEL:
		EndDialog(0);
		break;
	case IDC_CLEAR_BTN:
		m_DMALog->ClearEntries();
		RefreshList();
		break;
	}
	return FALSE;
}

LRESULT CDebugDMALogView::OnRamAddrChanged(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
	if (m_bConvertingAddress)
	{
		return FALSE;
	}

	char szRamAddr[9];
	char szRomAddr[9];

	m_DMARamEdit.GetWindowTextA(szRamAddr, 9);
	uint32_t ramAddr = strtoul(szRamAddr, NULL, 16);
	uint32_t romAddr, offset;

	DMALOGENTRY* lpEntry = m_DMALog->GetEntryByRamAddress(ramAddr, &romAddr, &offset);

	if (lpEntry != NULL)
	{
		sprintf(szRomAddr, "%08X", romAddr);
		stdstr blockInfo = stdstr_f("Block: %08X -> %08X [%X] +%X", romAddr, ramAddr, lpEntry->length, offset);
		m_BlockInfo.SetWindowTextA(blockInfo.c_str());
	}
	else
	{
		sprintf(szRomAddr, "????????");
		m_BlockInfo.SetWindowTextA("Block: ?");
	}
	
	m_bConvertingAddress = true;
	m_DMARomEdit.SetWindowTextA(szRomAddr);
	m_bConvertingAddress = false;
	return FALSE;
}

LRESULT CDebugDMALogView::OnRomAddrChanged(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
	if (m_bConvertingAddress)
	{
		return FALSE;
	}

	char szRamAddr[9];
	char szRomAddr[9];

	m_DMARomEdit.GetWindowTextA(szRomAddr, 9);
	uint32_t romAddr = strtoul(szRomAddr, NULL, 16);
	uint32_t ramAddr, offset;

	DMALOGENTRY* lpEntry = m_DMALog->GetEntryByRomAddress(romAddr, &ramAddr, &offset);

	if (lpEntry != NULL)
	{
		sprintf(szRamAddr, "%08X", ramAddr);
		stdstr blockInfo = stdstr_f("Block: %08X -> %08X [%X] +%X", romAddr, ramAddr, lpEntry->length, offset);
		m_BlockInfo.SetWindowTextA(blockInfo.c_str());
	}
	else
	{
		sprintf(szRamAddr, "????????");
		m_BlockInfo.SetWindowTextA("Block: ?");
	}

	m_bConvertingAddress = true;
	m_DMARamEdit.SetWindowTextA(szRamAddr);
	m_bConvertingAddress = false;
	return FALSE;
}


LRESULT CDebugDMALogView::OnCustomDrawList(NMHDR* pNMHDR)
{
	NMLVCUSTOMDRAW* pLVCD = reinterpret_cast<NMLVCUSTOMDRAW*>(pNMHDR);
	DWORD drawStage = pLVCD->nmcd.dwDrawStage;

	switch (drawStage)
	{
	case CDDS_PREPAINT: return CDRF_NOTIFYITEMDRAW;
	case CDDS_ITEMPREPAINT: return CDRF_NOTIFYSUBITEMDRAW;
	case (CDDS_ITEMPREPAINT | CDDS_SUBITEM): break;
	default: return CDRF_DODEFAULT;
	}
	
	DWORD nItem = pLVCD->nmcd.dwItemSpec;
	DWORD nSubItem = pLVCD->iSubItem;

	if (nSubItem != 0)
	{
		return CDRF_DODEFAULT;
	}
	
	size_t nEntries = m_DMALog->GetNumEntries();

	if (nEntries == 0)
	{
		return CDRF_DODEFAULT;
	}
	
	DMALOGENTRY* lpEntry = m_DMALog->GetEntryByIndex(nItem);
	
	if (nItem >= 1) // continuation
	{
		DMALOGENTRY* lpPrevEntry = m_DMALog->GetEntryByIndex(nItem - 1);

		if (lpEntry->romAddr == lpPrevEntry->romAddr + lpPrevEntry->length)
		{
			pLVCD->clrTextBk = RGB(0xFF, 0xFF, 0xCC);
			return CDRF_DODEFAULT;
		}
	}

	if (nEntries >= 2 && nItem <= nEntries - 2) // head
	{
		DMALOGENTRY* lpNextEntry = m_DMALog->GetEntryByIndex(nItem + 1);

		if (lpNextEntry->romAddr == lpEntry->romAddr + lpEntry->length)
		{
			pLVCD->clrTextBk = RGB(0xFF, 0xFF, 0x88);
			return CDRF_DODEFAULT;
		}
	}
	
	return CDRF_DODEFAULT;
}