// This file is part of Notepad++ project
// Copyright (C)2003 Don HO <don.h@free.fr>
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// Note that the GPL places important restrictions on "derived works", yet
// it does not provide a detailed definition of that term.  To avoid
// misunderstandings, we consider an application to constitute a
// "derivative work" for the purpose of this license if it does any of the
// following:
// 1. Integrates source code from Notepad++.
// 2. Integrates/includes/aggregates Notepad++ into a proprietary executable
//    installer, such as those produced by InstallShield.
// 3. Links to a library or executes a program that does any of the above.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.


#include <time.h>
#include <shlwapi.h>
#include "Notepad_plus_Window.h"

const TCHAR Notepad_plus_Window::_className[32] = TEXT("Notepad++");
HWND Notepad_plus_Window::gNppHWND = NULL;



namespace // anonymous
{

	struct PaintLocker final
	{
		explicit PaintLocker(HWND handle)
			: handle(handle)
		{
			// disallow drawing on the window
			LockWindowUpdate(handle);
		}

		~PaintLocker()
		{
			// re-allow drawing for the window
			LockWindowUpdate(NULL);

			// force re-draw
			InvalidateRect(handle, nullptr, TRUE);
			RedrawWindow(handle, nullptr, NULL, RDW_ERASE | RDW_ALLCHILDREN | RDW_FRAME | RDW_INVALIDATE);
		}

		HWND handle;
	};

} // anonymous namespace





void Notepad_plus_Window::init(HINSTANCE hInst, HWND parent, const TCHAR *cmdLine, CmdLineParams *cmdLineParams)
{
	time_t timestampBegin = 0;
	if (cmdLineParams->_showLoadingTime)
		timestampBegin = time(NULL);

	Window::init(hInst, parent);
	WNDCLASS nppClass;

	nppClass.style = CS_BYTEALIGNWINDOW | CS_DBLCLKS;
	nppClass.lpfnWndProc = Notepad_plus_Proc;
	nppClass.cbClsExtra = 0;
	nppClass.cbWndExtra = 0;
	nppClass.hInstance = _hInst;
	nppClass.hIcon = ::LoadIcon(hInst, MAKEINTRESOURCE(IDI_M30ICON));
	nppClass.hCursor = ::LoadCursor(NULL, IDC_ARROW);
	nppClass.hbrBackground = ::CreateSolidBrush(::GetSysColor(COLOR_MENU));
	nppClass.lpszMenuName = MAKEINTRESOURCE(IDR_M30_MENU);
	nppClass.lpszClassName = _className;

	_isPrelaunch = cmdLineParams->_isPreLaunch;

	if (!::RegisterClass(&nppClass))
	{
		throw std::runtime_error("Notepad_plus_Window::init : RegisterClass() function failed");
	}

	NppParameters *pNppParams = NppParameters::getInstance();
	NppGUI & nppGUI = const_cast<NppGUI &>(pNppParams->getNppGUI());

	if (cmdLineParams->_isNoPlugin)
		_notepad_plus_plus_core._pluginsManager.disable();

	_hSelf = ::CreateWindowEx(
		WS_EX_ACCEPTFILES | (_notepad_plus_plus_core._nativeLangSpeaker.isRTL()?WS_EX_LAYOUTRTL:0),
		_className,
		TEXT("Notepad++"),
		(WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN),
		// CreateWindowEx bug : set all 0 to walk around the pb
		0, 0, 0, 0,
		_hParent, nullptr, _hInst,
		(LPVOID) this); // pass the ptr of this instantiated object
        // for retrieve it in Notepad_plus_Proc from
        // the CREATESTRUCT.lpCreateParams afterward.

	if (NULL == _hSelf)
		throw std::runtime_error("Notepad_plus_Window::init : CreateWindowEx() function return null");


	PaintLocker paintLocker{_hSelf};

	_notepad_plus_plus_core.staticCheckMenuAndTB();

	gNppHWND = _hSelf;

	if (cmdLineParams->isPointValid())
	{
		::MoveWindow(_hSelf, cmdLineParams->_point.x, cmdLineParams->_point.y, nppGUI._appPos.right, nppGUI._appPos.bottom, TRUE);
	}
	else
	{
		WINDOWPLACEMENT posInfo;
	    posInfo.length = sizeof(WINDOWPLACEMENT);
		posInfo.flags = 0;
		if(_isPrelaunch)
			posInfo.showCmd = SW_HIDE;
		else
			posInfo.showCmd = nppGUI._isMaximized ? SW_SHOWMAXIMIZED : SW_SHOWNORMAL;

		posInfo.ptMinPosition.x = (LONG)-1;
		posInfo.ptMinPosition.y = (LONG)-1;
		posInfo.ptMaxPosition.x = (LONG)-1;
		posInfo.ptMaxPosition.y = (LONG)-1;
		posInfo.rcNormalPosition.left   = nppGUI._appPos.left;
		posInfo.rcNormalPosition.top    = nppGUI._appPos.top;
		posInfo.rcNormalPosition.bottom = nppGUI._appPos.top + nppGUI._appPos.bottom;
		posInfo.rcNormalPosition.right  = nppGUI._appPos.left + nppGUI._appPos.right;

		//SetWindowPlacement will take care of situations, where saved position was in no longer available monitor
		::SetWindowPlacement(_hSelf,&posInfo);
	}

	if ((nppGUI._tabStatus & TAB_MULTILINE) != 0)
		::SendMessage(_hSelf, WM_COMMAND, IDM_VIEW_DRAWTABBAR_MULTILINE, 0);

	if (!nppGUI._menuBarShow)
		::SetMenu(_hSelf, NULL);

	if (cmdLineParams->_isNoTab || (nppGUI._tabStatus & TAB_HIDE))
	{
		const int tabStatusOld = nppGUI._tabStatus;
		::SendMessage(_hSelf, NPPM_HIDETABBAR, 0, TRUE);
		if (cmdLineParams->_isNoTab)
		{
			// Restore old settings when tab bar has been hidden from tab bar.
			nppGUI._tabStatus = tabStatusOld;
		}
	}

	if (cmdLineParams->_alwaysOnTop)
		::SendMessage(_hSelf, WM_COMMAND, IDM_VIEW_ALWAYSONTOP, 0);

	nppGUI._isCmdlineNosessionActivated = cmdLineParams->_isNoSession;
	if (nppGUI._rememberLastSession && !cmdLineParams->_isNoSession)
		_notepad_plus_plus_core.loadLastSession();

	if (not cmdLineParams->_isPreLaunch)
	{
		if (cmdLineParams->isPointValid())
			::ShowWindow(_hSelf, SW_SHOW);
		else
			::ShowWindow(_hSelf, nppGUI._isMaximized ? SW_MAXIMIZE : SW_SHOW);
	}
	else
	{
		_notepad_plus_plus_core._pTrayIco = new trayIconControler(_hSelf, IDI_M30ICON, IDC_MINIMIZED_TRAY, ::LoadIcon(_hInst, MAKEINTRESOURCE(IDI_M30ICON)), TEXT(""));
		_notepad_plus_plus_core._pTrayIco->doTrayIcon(ADD);
	}

	if (cmdLine)
		_notepad_plus_plus_core.loadCommandlineParams(cmdLine, cmdLineParams);

	std::vector<generic_string> fileNames;
	std::vector<generic_string> patterns;
	patterns.push_back(TEXT("*.xml"));

	generic_string nppDir = pNppParams->getNppPath();

	LocalizationSwitcher & localizationSwitcher = pNppParams->getLocalizationSwitcher();
	std::wstring localizationDir = nppDir;
	PathAppend(localizationDir, TEXT("localization\\"));

	_notepad_plus_plus_core.getMatchedFileNames(localizationDir.c_str(), patterns, fileNames, false, false);
	for (size_t i = 0, len = fileNames.size(); i < len; ++i)
		localizationSwitcher.addLanguageFromXml(fileNames[i].c_str());

	fileNames.clear();
	ThemeSwitcher & themeSwitcher = pNppParams->getThemeSwitcher();

	//  Get themes from both npp install themes dir and app data themes dir with the per user
	//  overriding default themes of the same name.

	generic_string themeDir;
    if (pNppParams->getAppDataNppDir() && pNppParams->getAppDataNppDir()[0])
    {
        themeDir = pNppParams->getAppDataNppDir();
	    PathAppend(themeDir, TEXT("themes\\"));
	    _notepad_plus_plus_core.getMatchedFileNames(themeDir.c_str(), patterns, fileNames, false, false);
	    for (size_t i = 0, len = fileNames.size() ; i < len ; ++i)
	    {
		    themeSwitcher.addThemeFromXml(fileNames[i].c_str());
	    }
    }

	fileNames.clear();
	themeDir.clear();
	themeDir = nppDir.c_str(); // <- should use the pointer to avoid the constructor of copy
	PathAppend(themeDir, TEXT("themes\\"));
	_notepad_plus_plus_core.getMatchedFileNames(themeDir.c_str(), patterns, fileNames, false, false);
	for (size_t i = 0, len = fileNames.size(); i < len ; ++i)
	{
		generic_string themeName( themeSwitcher.getThemeFromXmlFileName(fileNames[i].c_str()) );
		if (! themeSwitcher.themeNameExists(themeName.c_str()) )
		{
			themeSwitcher.addThemeFromXml(fileNames[i].c_str());
		}
	}

	for (size_t i = 0, len = _notepad_plus_plus_core._internalFuncIDs.size() ; i < len ; ++i)
		::SendMessage(_hSelf, WM_COMMAND, _notepad_plus_plus_core._internalFuncIDs[i], 0);

	// Notify plugins that Notepad++ is ready
	SCNotification scnN;
	scnN.nmhdr.code = NPPN_READY;
	scnN.nmhdr.hwndFrom = _hSelf;
	scnN.nmhdr.idFrom = 0;
	_notepad_plus_plus_core._pluginsManager.notify(&scnN);

	if (not cmdLineParams->_easterEggName.empty())
	{
		char dest[MAX_PATH];
		wcstombs(dest, (cmdLineParams->_easterEggName).c_str(), sizeof(dest));

		//::MessageBoxA(NULL, destStr.c_str(), "", MB_OK);
		if (cmdLineParams->_quoteType == 0) // Easter Egg Name
		{
			int iQuote = _notepad_plus_plus_core.getQuoteIndexFrom(dest);
			if (iQuote != -1)
			{
				_notepad_plus_plus_core.showQuoteFromIndex(iQuote);
			}
		}
		else if (cmdLineParams->_quoteType == 1) // command line quote
		{
			_userQuote = dest;
			_notepad_plus_plus_core.showQuote(_userQuote.c_str(), "Anonymous #999", false);
		}
		else if (cmdLineParams->_quoteType == 2) // content drom file
		{
			std::string destStr = dest;
			generic_string fileName(destStr.begin(), destStr.end());

			if (::PathFileExists(fileName.c_str()))
			{
				_userQuote = getFileContent(fileName.c_str());
				if (_userQuote != "")
					_notepad_plus_plus_core.showQuote(_userQuote.c_str(), "Anonymous #999", false);
			}
		}
	}

	if (cmdLineParams->_showLoadingTime)
	{
		time_t timestampEnd = time(NULL);
		double loadTime = difftime(timestampEnd, timestampBegin);

		char dest[256];
		sprintf(dest, "Loading time : %.0lf seconds", loadTime);
		::MessageBoxA(NULL, dest, "", MB_OK);
	}

	bool isSnapshotMode = nppGUI.isSnapshotMode();
	if (isSnapshotMode)
	{
		_notepad_plus_plus_core.checkModifiedDocument();
		// Lauch backup task
		_notepad_plus_plus_core.launchDocumentBackupTask();
	}

	// Make this call later to take effect
	::SendMessage(_hSelf, NPPM_INTERNAL_SETWORDCHARS, 0, 0);
}


bool Notepad_plus_Window::isDlgsMsg(MSG *msg) const
{
	for (size_t i = 0, len = _notepad_plus_plus_core._hModelessDlgs.size(); i < len; ++i)
	{
		if (_notepad_plus_plus_core.processIncrFindAccel(msg))
			return true;

		if (_notepad_plus_plus_core.processFindAccel(msg))
			return true;

		if (::IsDialogMessageW(_notepad_plus_plus_core._hModelessDlgs[i], msg))
			return true;
	}
	return false;
}