/*

Miranda NG: the free IM client for Microsoft* Windows*

Copyright (c) 2012-14 Miranda NG project (http://miranda-ng.org),
Copyright (c) 2000-12 Miranda IM project,
all portions of this codebase are copyrighted to the people
listed in contributors.txt.

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.

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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#include "commonheaders.h"
#include <sys/types.h>
#include <sys/stat.h>
#include "file.h"

static void SetFileListAndSizeControls(HWND hwndDlg, FileDlgData *dat)
{
	int fileCount = 0, dirCount = 0, i;
	__int64 totalSize = 0;
	struct _stat statbuf;
	TCHAR str[64];

	for (i = 0; dat->files[i]; i++) {
		if (_tstat(dat->files[i], &statbuf) == 0) {
			if (statbuf.st_mode & _S_IFDIR)
				dirCount++;
			else
				fileCount++;
			totalSize += statbuf.st_size;
		}
	}

	GetSensiblyFormattedSize(totalSize, str, SIZEOF(str), 0, 1, NULL);
	SetDlgItemText(hwndDlg, IDC_TOTALSIZE, str);
	if (i > 1) {
		TCHAR szFormat[32];
		if (fileCount && dirCount) {
			mir_sntprintf(szFormat, SIZEOF(szFormat), _T("%s, %s"), TranslateTS(fileCount == 1 ? _T("%d file") : _T("%d files")), TranslateTS(dirCount == 1 ? _T("%d directory") : _T("%d directories")));
			mir_sntprintf(str, SIZEOF(str), szFormat, fileCount, dirCount);
		}
		else if (fileCount) {
			lstrcpy(szFormat, TranslateT("%d files"));
			mir_sntprintf(str, SIZEOF(str), szFormat, fileCount);
		}
		else {
			lstrcpy(szFormat, TranslateT("%d directories"));
			mir_sntprintf(str, SIZEOF(str), szFormat, dirCount);
		}
		SetDlgItemText(hwndDlg, IDC_FILE, str);
	}
	else SetDlgItemText(hwndDlg, IDC_FILE, dat->files[0]);

	EnableWindow(GetDlgItem(hwndDlg, IDOK), fileCount || dirCount);
}

static void FilenameToFileList(HWND hwndDlg, FileDlgData* dat, const TCHAR *buf)
{
	// Make sure that the file matrix is empty (the user may select files several times)
	FreeFilesMatrix(&dat->files);

	// Get the file attributes of selection
	DWORD dwFileAttributes = GetFileAttributes(buf);
	if (dwFileAttributes == INVALID_FILE_ATTRIBUTES)
		return;

	// Check if the selection is a directory or a file
	if (GetFileAttributes(buf) & FILE_ATTRIBUTE_DIRECTORY) {
		const TCHAR *pBuf;
		int nNumberOfFiles = 0;
		int nTemp;
		int fileOffset;

		// :NOTE: The first string in the buffer is the directory, followed by a
		// NULL separated list of all files

		// fileOffset is the offset to the first file.
		fileOffset = lstrlen(buf) + 1;

		// Count number of files
		pBuf = buf + fileOffset;
		while (*pBuf) {
			pBuf += lstrlen(pBuf) + 1;
			nNumberOfFiles++;
		}

		// Allocate memory for a pointer array
		if ((dat->files = (TCHAR**)mir_alloc((nNumberOfFiles + 1) * sizeof(TCHAR*))) == NULL)
			return;

		// Fill the array
		pBuf = buf + fileOffset;
		nTemp = 0;
		while (*pBuf) {
			// Allocate space for path+filename
			int cbFileNameLen = lstrlen(pBuf);
			dat->files[nTemp] = (TCHAR*)mir_alloc(sizeof(TCHAR)*(fileOffset + cbFileNameLen + 1));

			// Add path to filename and copy into array
			CopyMemory(dat->files[nTemp], buf, (fileOffset - 1)*sizeof(TCHAR));
			dat->files[nTemp][fileOffset - 1] = '\\';
			_tcscpy(dat->files[nTemp] + fileOffset - (buf[fileOffset - 2] == '\\' ? 1 : 0), pBuf);

			// Move pointers to next file...
			pBuf += cbFileNameLen + 1;
			nTemp++;
		}
		// Terminate array
		dat->files[nNumberOfFiles] = NULL;
	}
	// ...the selection is a single file
	else {
		if ((dat->files = (TCHAR **)mir_alloc(2 * sizeof(TCHAR*))) == NULL) // Leaks when aborted
			return;

		dat->files[0] = mir_tstrdup(buf);
		dat->files[1] = NULL;
	}

	// Update dialog text with new file selection
	SetFileListAndSizeControls(hwndDlg, dat);
}

#define M_FILECHOOSEDONE  (WM_USER+100)
void __cdecl ChooseFilesThread(void* param)
{
	HWND hwndDlg = (HWND)param;
	TCHAR filter[128], *pfilter;
	TCHAR *buf = (TCHAR*)mir_alloc(sizeof(TCHAR)* 32767);
	if (buf == NULL) {
		PostMessage(hwndDlg, M_FILECHOOSEDONE, 0, (LPARAM)(TCHAR*)NULL);
		return;
	}

	OPENFILENAME ofn = { 0 };
	ofn.lStructSize = OPENFILENAME_SIZE_VERSION_400;
	ofn.hwndOwner = hwndDlg;
	lstrcpy(filter, TranslateT("All files"));
	lstrcat(filter, _T(" (*)"));
	pfilter = filter + lstrlen(filter) + 1;
	lstrcpy(pfilter, _T("*"));
	pfilter = filter + lstrlen(filter) + 1;
	pfilter[0] = '\0';
	ofn.lpstrFilter = filter;
	ofn.lpstrFile = buf; *buf = 0;
	ofn.nMaxFile = 32767;
	ofn.Flags = OFN_NOCHANGEDIR | OFN_FILEMUSTEXIST | OFN_ALLOWMULTISELECT | OFN_EXPLORER | OFN_HIDEREADONLY | OFN_DONTADDTORECENT;
	if (GetOpenFileName(&ofn))
		PostMessage(hwndDlg, M_FILECHOOSEDONE, 0, (LPARAM)buf);
	else {
		mir_free(buf);
		PostMessage(hwndDlg, M_FILECHOOSEDONE, 0, NULL);
	}
}

static BOOL CALLBACK ClipSiblingsChildEnumProc(HWND hwnd, LPARAM)
{
	SetWindowLongPtr(hwnd, GWL_STYLE, GetWindowLongPtr(hwnd, GWL_STYLE) | WS_CLIPSIBLINGS);
	return TRUE;
}

static LRESULT CALLBACK SendEditSubclassProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
	switch (msg) {
	case WM_CHAR:
		if (wParam == '\n' && GetKeyState(VK_CONTROL) & 0x8000) {
			PostMessage(GetParent(hwnd), WM_COMMAND, IDOK, 0);
			return 0;
		}
		break;
	case WM_SYSCHAR:
		if ((wParam == 's' || wParam == 'S') && GetKeyState(VK_MENU) & 0x8000) {
			PostMessage(GetParent(hwnd), WM_COMMAND, IDOK, 0);
			return 0;
		}
		break;
	}
	return mir_callNextSubclass(hwnd, SendEditSubclassProc, msg, wParam, lParam);
}

INT_PTR CALLBACK DlgProcSendFile(HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM lParam)
{
	FileDlgData *dat = (FileDlgData*)GetWindowLongPtr(hwndDlg, GWLP_USERDATA);
	switch (msg) {
	case WM_INITDIALOG:
		TranslateDialogDefault(hwndDlg);
		{
			struct FileSendData *fsd = (struct FileSendData*)lParam;

			dat = (FileDlgData*)mir_calloc(sizeof(FileDlgData));
			SetWindowLongPtr(hwndDlg, GWLP_USERDATA, (LONG_PTR)dat);
			dat->hContact = fsd->hContact;
			dat->send = 1;
			dat->hPreshutdownEvent = HookEventMessage(ME_SYSTEM_PRESHUTDOWN, hwndDlg, M_PRESHUTDOWN);
			dat->fs = NULL;
			dat->dwTicks = GetTickCount();

			EnumChildWindows(hwndDlg, ClipSiblingsChildEnumProc, 0);
			mir_subclassWindow(GetDlgItem(hwndDlg, IDC_MSG), SendEditSubclassProc);

			Window_SetIcon_IcoLib(hwndDlg, SKINICON_EVENT_FILE);
			Button_SetIcon_IcoLib(hwndDlg, IDC_DETAILS, SKINICON_OTHER_USERDETAILS, LPGEN("View user's details"));
			Button_SetIcon_IcoLib(hwndDlg, IDC_HISTORY, SKINICON_OTHER_HISTORY, LPGEN("View user's history"));
			Button_SetIcon_IcoLib(hwndDlg, IDC_USERMENU, SKINICON_OTHER_DOWNARROW, LPGEN("User menu"));

			EnableWindow(GetDlgItem(hwndDlg, IDOK), FALSE);

			if (fsd->ppFiles != NULL && fsd->ppFiles[0] != NULL) {
				int totalCount, i;
				for (totalCount = 0; fsd->ppFiles[totalCount]; totalCount++);
				dat->files = (TCHAR**)mir_alloc(sizeof(TCHAR*)*(totalCount + 1)); // Leaks
				for (i = 0; i < totalCount; i++)
					dat->files[i] = mir_tstrdup(fsd->ppFiles[i]);
				dat->files[totalCount] = NULL;
				SetFileListAndSizeControls(hwndDlg, dat);
			}

			TCHAR *contactName = pcli->pfnGetContactDisplayName(dat->hContact, 0);
			SetDlgItemText(hwndDlg, IDC_TO, contactName);

			char *szProto = GetContactProto(dat->hContact);
			if (szProto) {
				int hasName = 0;
				char buf[128];

				CONTACTINFO ci = { sizeof(ci) };
				ci.hContact = dat->hContact;
				ci.szProto = szProto;
				ci.dwFlag = CNF_UNIQUEID;
				if (!CallService(MS_CONTACT_GETCONTACTINFO, 0, (LPARAM)&ci)) {
					switch (ci.type) {
					case CNFT_ASCIIZ:
						hasName = 1;
						mir_snprintf(buf, SIZEOF(buf), "%s", ci.pszVal);
						mir_free(ci.pszVal);
						break;
					case CNFT_DWORD:
						hasName = 1;
						mir_snprintf(buf, SIZEOF(buf), "%u", ci.dVal);
						break;
					}
				}

				if (hasName)
					SetDlgItemTextA(hwndDlg, IDC_NAME, buf);
				else
					SetDlgItemText(hwndDlg, IDC_NAME, contactName);
			}

			if (fsd->ppFiles == NULL) {
				EnableWindow(hwndDlg, FALSE);
				dat->closeIfFileChooseCancelled = 1;
				PostMessage(hwndDlg, WM_COMMAND, MAKEWPARAM(IDC_CHOOSE, BN_CLICKED), (LPARAM)GetDlgItem(hwndDlg, IDC_CHOOSE));
			}
		}
		return TRUE;

	case WM_MEASUREITEM:
		return CallService(MS_CLIST_MENUMEASUREITEM, wParam, lParam);

	case WM_DRAWITEM:
		{
			LPDRAWITEMSTRUCT dis = (LPDRAWITEMSTRUCT)lParam;
			if (dis->hwndItem == GetDlgItem(hwndDlg, IDC_PROTOCOL)) {
				char *szProto = GetContactProto(dat->hContact);
				if (szProto) {
					HICON hIcon = (HICON)CallProtoService(szProto, PS_LOADICON, PLI_PROTOCOL | PLIF_SMALL, 0);
					if (hIcon) {
						DrawIconEx(dis->hDC, dis->rcItem.left, dis->rcItem.top, hIcon, GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON), 0, NULL, DI_NORMAL);
						DestroyIcon(hIcon);
					}
				}
			}
		}
		return CallService(MS_CLIST_MENUDRAWITEM, wParam, lParam);

	case M_FILECHOOSEDONE:
		if (lParam != 0) {
			FilenameToFileList(hwndDlg, dat, (TCHAR*)lParam);
			mir_free((TCHAR*)lParam);
			dat->closeIfFileChooseCancelled = 0;
		}
		else if (dat->closeIfFileChooseCancelled)
			PostMessage(hwndDlg, WM_COMMAND, IDCANCEL, 0);

		EnableWindow(hwndDlg, TRUE);
		break;

	case WM_COMMAND:
		if (CallService(MS_CLIST_MENUPROCESSCOMMAND, MAKEWPARAM(LOWORD(wParam), MPCF_CONTACTMENU), (LPARAM)dat->hContact))
			break;

		switch (LOWORD(wParam)) {
		case IDC_CHOOSE:
			EnableWindow(hwndDlg, FALSE);
			forkthread(ChooseFilesThread, 0, hwndDlg);
			break;

		case IDOK:
			NotifyEventHooks(hDlgSucceeded, dat->hContact, (LPARAM)hwndDlg);

			EnableWindow(GetDlgItem(hwndDlg, IDC_FILENAME), FALSE);
			EnableWindow(GetDlgItem(hwndDlg, IDC_MSG), FALSE);
			EnableWindow(GetDlgItem(hwndDlg, IDC_CHOOSE), FALSE);

			GetDlgItemText(hwndDlg, IDC_FILEDIR, dat->szSavePath, SIZEOF(dat->szSavePath));
			GetDlgItemText(hwndDlg, IDC_FILE, dat->szFilenames, SIZEOF(dat->szFilenames));
			GetDlgItemText(hwndDlg, IDC_MSG, dat->szMsg, SIZEOF(dat->szMsg));
			dat->hwndTransfer = FtMgr_AddTransfer(dat);
			SetWindowLongPtr(hwndDlg, GWLP_USERDATA, 0);
			DestroyWindow(hwndDlg);
			return TRUE;

		case IDCANCEL:
			NotifyEventHooks(hDlgCanceled, dat->hContact, (LPARAM)hwndDlg);
			DestroyWindow(hwndDlg);
			return TRUE;

		case IDC_USERMENU:
			{
				HMENU hMenu = (HMENU)CallService(MS_CLIST_MENUBUILDCONTACT, (WPARAM)dat->hContact, 0);
				RECT rc;
				GetWindowRect((HWND)lParam, &rc);
				TrackPopupMenu(hMenu, 0, rc.left, rc.bottom, 0, hwndDlg, NULL);
				DestroyMenu(hMenu);
			}
			break;

		case IDC_DETAILS:
			CallService(MS_USERINFO_SHOWDIALOG, (WPARAM)dat->hContact, 0);
			return TRUE;

		case IDC_HISTORY:
			CallService(MS_HISTORY_SHOWCONTACTHISTORY, (WPARAM)dat->hContact, 0);
			return TRUE;
		}
		break;

	case WM_DESTROY:
		Window_FreeIcon_IcoLib(hwndDlg);
		Button_FreeIcon_IcoLib(hwndDlg, IDC_DETAILS);
		Button_FreeIcon_IcoLib(hwndDlg, IDC_HISTORY);
		Button_FreeIcon_IcoLib(hwndDlg, IDC_USERMENU);

		if (dat)
			FreeFileDlgData(dat);

		return TRUE;
	}
	return FALSE;
}