/*

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

Copyright (ń) 2012-15 Miranda NG project (http://miranda-ng.org),
Copyright (c) 2000-10 Miranda ICQ/IM project,
all portions of this codebase are copyrighted to the people
listed in contributors.txt.

Portions of this code modified for Simple Status Message plugin
Copyright (C) 2006-2011 Bartosz 'Dezeath' Białek, (C) 2005 Harven

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.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#include "commonheaders.h"

static HGENMENU hAwayMsgMenuItem, hCopyMsgMenuItem, hGoToURLMenuItem;
static MWindowList hWindowList, hWindowList2;

static char *StrNormNewlineA(char *szStr)
{
	if (szStr == NULL)
		return NULL;

	int nCR = 0;
	for (int i = 0; szStr[i]; i++)
		if (szStr[i] != 0x0D && szStr[i + 1] == 0x0A)
			nCR++;

	if (!nCR)
		return mir_strdup(szStr);

	char *szNewStr = (char *)mir_alloc(mir_strlen(szStr) + nCR + 1), *pszStr = szNewStr;
	while (*szStr) {
		if (*szStr == 0x0A)
			*pszStr++ = 0x0D;
		*pszStr++ = *szStr++;
	}
	*pszStr++ = 0;

	return szNewStr;
}


static TCHAR *StrNormNewline(TCHAR *tszStr)
{
	if (tszStr == NULL)
		return NULL;

	int nCR = 0;
	for (int i = 0; tszStr[i]; i++)
		if (tszStr[i] != 0x0D && tszStr[i + 1] == 0x0A)
			nCR++;

	if (!nCR)
		return mir_tstrdup(tszStr);

	TCHAR *tszNewStr = (TCHAR *)mir_alloc((mir_tstrlen(tszStr) + nCR + 1) * sizeof(TCHAR)), *ptszStr = tszNewStr;
	while (*tszStr) {
		if (*tszStr == 0x0A)
			*ptszStr++ = 0x0D;
		*ptszStr++ = *tszStr++;
	}
	*ptszStr++ = 0;

	return tszNewStr;
}


struct AwayMsgDlgData
{
	MCONTACT hContact;
	HANDLE hSeq;
	HANDLE hAwayMsgEvent;
};

#define HM_AWAYMSG  (WM_USER + 10)

static INT_PTR CALLBACK ReadAwayMsgDlgProc(HWND hwndDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	AwayMsgDlgData *dat = (AwayMsgDlgData *)GetWindowLongPtr(hwndDlg, GWLP_USERDATA);

	switch (message) {
		case WM_INITDIALOG:
			TranslateDialogDefault(hwndDlg);
			dat = (AwayMsgDlgData *)mir_alloc(sizeof(AwayMsgDlgData));
			SetWindowLongPtr(hwndDlg, GWLP_USERDATA, (LONG_PTR)dat);

			dat->hContact = lParam;
			dat->hSeq = (HANDLE)CallContactService(dat->hContact, PSS_GETAWAYMSG, 0, 0);
			dat->hAwayMsgEvent = dat->hSeq ? HookEventMessage(ME_PROTO_ACK, hwndDlg, HM_AWAYMSG) : NULL;
			WindowList_Add(hWindowList, hwndDlg, dat->hContact);
			{
				TCHAR str[256], format[128];
				TCHAR *contactName = (TCHAR *)pcli->pfnGetContactDisplayName(dat->hContact, 0);
				char *szProto = GetContactProto(dat->hContact);
				WORD dwStatus = db_get_w(dat->hContact, szProto, "Status", ID_STATUS_OFFLINE);
				TCHAR *status = pcli->pfnGetStatusModeDescription(dwStatus, 0);

				GetWindowText(hwndDlg, format, _countof(format));
				mir_sntprintf(str, _countof(str), format, status, contactName);
				SetWindowText(hwndDlg, str);
				if (dat->hSeq) {
					GetDlgItemText(hwndDlg, IDC_RETRIEVING, format, _countof(format));
					mir_sntprintf(str, _countof(str), format, status);
				}
				else {
					mir_sntprintf(str, _countof(str), TranslateT("Failed to retrieve %s message."), status);
					SetDlgItemText(hwndDlg, IDOK, TranslateT("&Close"));
				}
				SetDlgItemText(hwndDlg, IDC_RETRIEVING, str);
				SendMessage(hwndDlg, WM_SETICON, ICON_BIG, (LPARAM)Skin_LoadProtoIcon(szProto, dwStatus));
				SendMessage(hwndDlg, WM_SETICON, ICON_SMALL, (LPARAM)Skin_LoadProtoIcon(szProto, dwStatus));
				EnableWindow(GetDlgItem(hwndDlg, IDC_COPY), FALSE);
			}
			Utils_RestoreWindowPosition(hwndDlg, lParam, "SRAway", "AwayMsgDlg");
			return TRUE;

		case HM_AWAYMSG:
		{
			ACKDATA *ack = (ACKDATA *)lParam;
			if (ack->hContact != dat->hContact || ack->type != ACKTYPE_AWAYMSG)
				break;
			if (ack->result != ACKRESULT_SUCCESS)
				break;
			if (dat->hAwayMsgEvent && ack->hProcess == dat->hSeq) {
				UnhookEvent(dat->hAwayMsgEvent);
				dat->hAwayMsgEvent = NULL;
			}

			TCHAR *tszMsg = StrNormNewline((TCHAR *)ack->lParam);
			SetDlgItemText(hwndDlg, IDC_MSG, tszMsg);
			mir_free(tszMsg);

			if (ack->lParam && *((char *)ack->lParam) != '\0')
				EnableWindow(GetDlgItem(hwndDlg, IDC_COPY), TRUE);
			ShowWindow(GetDlgItem(hwndDlg, IDC_RETRIEVING), SW_HIDE);
			ShowWindow(GetDlgItem(hwndDlg, IDC_MSG), SW_SHOW);
			SetDlgItemText(hwndDlg, IDOK, TranslateT("&Close"));
			break;
		}

		case WM_COMMAND:
			switch (LOWORD(wParam)) {
				case IDCANCEL:
				case IDOK:
					DestroyWindow(hwndDlg);
					break;

				case IDC_COPY:
					if (!OpenClipboard(hwndDlg))
						break;
					if (EmptyClipboard()) {
						TCHAR msg[1024];
						int len = GetDlgItemText(hwndDlg, IDC_MSG, msg, _countof(msg));
						if (len) {
							LPTSTR lptstrCopy;
							HGLOBAL hglbCopy = GlobalAlloc(GMEM_MOVEABLE, (len + 1) * sizeof(TCHAR));
							if (hglbCopy == NULL) {
								CloseClipboard();
								break;
							}
							lptstrCopy = (LPTSTR)GlobalLock(hglbCopy);
							memcpy(lptstrCopy, msg, len * sizeof(TCHAR));
							lptstrCopy[len] = (TCHAR)0;
							GlobalUnlock(hglbCopy);

							SetClipboardData(CF_UNICODETEXT, hglbCopy);

						}
					}
					CloseClipboard();
					break;
			}
			break;

		case WM_CLOSE:
			DestroyWindow(hwndDlg);
			break;

		case WM_DESTROY:
			if (dat->hAwayMsgEvent)
				UnhookEvent(dat->hAwayMsgEvent);
			Utils_SaveWindowPosition(hwndDlg, dat->hContact, "SRAway", "AwayMsgDlg");
			WindowList_Remove(hWindowList, hwndDlg);
			IcoLib_ReleaseIcon((HICON)SendMessage(hwndDlg, WM_SETICON, ICON_BIG, NULL));
			IcoLib_ReleaseIcon((HICON)SendMessage(hwndDlg, WM_SETICON, ICON_SMALL, NULL));
			mir_free(dat);
			break;
	}
	return FALSE;
}

static INT_PTR GetMessageCommand(WPARAM wParam, LPARAM)
{
	if (HWND hwnd = WindowList_Find(hWindowList, wParam)) {
		SetForegroundWindow(hwnd);
		SetFocus(hwnd);
	}
	else
		CreateDialogParam(g_hInst, MAKEINTRESOURCE(IDD_READAWAYMSG), NULL, ReadAwayMsgDlgProc, wParam);
	return 0;
}

static INT_PTR CALLBACK CopyAwayMsgDlgProc(HWND hwndDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	AwayMsgDlgData *dat = (AwayMsgDlgData *)GetWindowLongPtr(hwndDlg, GWLP_USERDATA);

	switch (message) {
		case WM_INITDIALOG:
		{
			TCHAR str[256], format[128];
			TCHAR *contactName;

			TranslateDialogDefault(hwndDlg);
			dat = (AwayMsgDlgData *)mir_alloc(sizeof(AwayMsgDlgData));
			SetWindowLongPtr(hwndDlg, GWLP_USERDATA, (LONG_PTR)dat);

			dat->hContact = lParam;
			dat->hSeq = (HANDLE)CallContactService(dat->hContact, PSS_GETAWAYMSG, 0, 0);
			dat->hAwayMsgEvent = dat->hSeq ? HookEventMessage(ME_PROTO_ACK, hwndDlg, HM_AWAYMSG) : NULL;
			WindowList_Add(hWindowList2, hwndDlg, dat->hContact);
			contactName = (TCHAR *)pcli->pfnGetContactDisplayName(dat->hContact, 0);
			GetWindowText(hwndDlg, format, _countof(format));
			mir_sntprintf(str, _countof(str), format, contactName);
			SetWindowText(hwndDlg, str);
			if (!dat->hSeq)
				DestroyWindow(hwndDlg);
			return TRUE;
		}

		case HM_AWAYMSG:
		{
			ACKDATA *ack = (ACKDATA *)lParam;
			if (ack->hContact != dat->hContact || ack->type != ACKTYPE_AWAYMSG) {
				DestroyWindow(hwndDlg);
				break;
			}
			if (ack->result != ACKRESULT_SUCCESS) {
				DestroyWindow(hwndDlg);
				break;
			}
			if (dat->hAwayMsgEvent && ack->hProcess == dat->hSeq) {
				UnhookEvent(dat->hAwayMsgEvent);
				dat->hAwayMsgEvent = NULL;
			}

			if (!OpenClipboard(hwndDlg)) {
				DestroyWindow(hwndDlg);
				break;
			}
			if (EmptyClipboard()) {
				TCHAR msg[1024];
				TCHAR *tszMsg = StrNormNewline((TCHAR *)ack->lParam);
				_tcsncpy_s(msg, tszMsg, _TRUNCATE);
				mir_free(tszMsg);
				size_t len = mir_tstrlen(msg);
				if (len) {
					LPTSTR lptstrCopy;
					HGLOBAL hglbCopy = GlobalAlloc(GMEM_MOVEABLE, (len + 1) * sizeof(TCHAR));
					if (hglbCopy == NULL) {
						CloseClipboard();
						DestroyWindow(hwndDlg);
						break;
					}
					lptstrCopy = (LPTSTR)GlobalLock(hglbCopy);
					memcpy(lptstrCopy, msg, len * sizeof(TCHAR));
					lptstrCopy[len] = (TCHAR)0;
					GlobalUnlock(hglbCopy);

					SetClipboardData(CF_UNICODETEXT, hglbCopy);
				}
			}
			CloseClipboard();
			DestroyWindow(hwndDlg);
			break;
		}

		case WM_COMMAND:
			switch (LOWORD(wParam)) {
				case IDCANCEL:
				case IDOK:
					DestroyWindow(hwndDlg);
				break;
			}
			break;

		case WM_CLOSE:
			DestroyWindow(hwndDlg);
			break;

		case WM_DESTROY:
			if (dat->hAwayMsgEvent) UnhookEvent(dat->hAwayMsgEvent);
			WindowList_Remove(hWindowList2, hwndDlg);
			mir_free(dat);
			break;
	}
	return FALSE;
}

static INT_PTR CopyAwayMsgCommand(WPARAM wParam, LPARAM)
{
	if (HWND hwnd = WindowList_Find(hWindowList2, wParam)) {
		SetForegroundWindow(hwnd);
		SetFocus(hwnd);
	}
	else
		CreateDialogParam(g_hInst, MAKEINTRESOURCE(IDD_COPY), NULL, CopyAwayMsgDlgProc, wParam);
	return 0;
}

static char *StrFindURL(char *pszStr)
{
	char *pszURL = NULL;

	if (pszStr != NULL && *pszStr != '\0') {
		pszURL = strstr(pszStr, "www.");
		if (pszURL == NULL)
			pszURL = strstr(pszStr, "http://");
		if (pszURL == NULL)
			pszURL = strstr(pszStr, "https://");
		if (pszURL == NULL)
			pszURL = strstr(pszStr, "ftp://");
	}

	return pszURL;
}

static INT_PTR GoToURLMsgCommand(WPARAM wParam, LPARAM lParam)
{
	ptrA szMsg(db_get_sa(wParam, "CList", "StatusMsg"));

	char *szURL = StrFindURL(szMsg);
	if (szURL != NULL) {
		int i;
		for (i = 0; szURL[i] != ' ' && szURL[i] != '\n' && szURL[i] != '\r' && szURL[i] != '\t' && szURL[i] != '\0'; i++);

		char *szMsgURL = (char *)mir_alloc(i + 1);
		if (szMsgURL) {
			mir_strncpy(szMsgURL, szURL, i + 1);
			Utils_OpenUrl(szMsgURL);
			mir_free(szMsgURL);
		}
	}

	return 0;
}

static int AwayMsgPreBuildMenu(WPARAM hContact, LPARAM lParam)
{
	TCHAR str[128];
	char *szProto = GetContactProto(hContact);
	int iHidden = szProto ? db_get_b(hContact, szProto, "ChatRoom", 0) : 0;
	int iStatus;

	if (!iHidden) {
		iHidden = 1;
		iStatus = db_get_w(hContact, szProto, "Status", ID_STATUS_OFFLINE);
		if (CallProtoService(szProto, PS_GETCAPS, PFLAGNUM_1, 0) & PF1_MODEMSGRECV) {
			if (CallProtoService(szProto, PS_GETCAPS, PFLAGNUM_3, 0) & Proto_Status2Flag(iStatus == ID_STATUS_OFFLINE ? ID_STATUS_INVISIBLE : iStatus)) {
				iHidden = 0;
				HICON hIcon = Skin_LoadProtoIcon(szProto, iStatus);
				mir_sntprintf(str, _countof(str), TranslateT("Re&ad %s message"), pcli->pfnGetStatusModeDescription(iStatus, 0));
				Menu_ModifyItem(hAwayMsgMenuItem, str, hIcon, 0);
				IcoLib_ReleaseIcon(hIcon);
			}
		}
	}
	else Menu_ShowItem(hAwayMsgMenuItem, false);

	ptrA szMsg(db_get_sa(hContact, "CList", "StatusMsg"));

	if (!iHidden && szMsg != NULL) {
		mir_sntprintf(str, _countof(str), TranslateT("Copy %s message"), pcli->pfnGetStatusModeDescription(iStatus, 0));
		Menu_ModifyItem(hCopyMsgMenuItem, str);
	}
	else Menu_ShowItem(hCopyMsgMenuItem, false);

	if (!iHidden && szMsg != NULL && StrFindURL(szMsg) != NULL) {
		mir_sntprintf(str, _countof(str), TranslateT("&Go to URL in %s message"), pcli->pfnGetStatusModeDescription(iStatus, 0));
		Menu_ModifyItem(hGoToURLMenuItem, str);
	}
	else Menu_ShowItem(hGoToURLMenuItem, false);

	return 0;
}

int AwayMsgPreShutdown(void)
{
	if (hWindowList) {
		WindowList_Broadcast(hWindowList, WM_CLOSE, 0, 0);
		WindowList_Destroy(hWindowList);
	}
	if (hWindowList2) {
		WindowList_Broadcast(hWindowList2, WM_CLOSE, 0, 0);
		WindowList_Destroy(hWindowList2);
	}
	return 0;
}

int LoadAwayMsgModule(void)
{
	hWindowList = WindowList_Create();
	hWindowList2 = WindowList_Create();

	CMenuItem mi;
	mi.flags = CMIF_TCHAR;

	CreateServiceFunction(MS_AWAYMSG_SHOWAWAYMSG, GetMessageCommand);
	mi.position = -2000005000;
	mi.name.t = LPGENT("Re&ad Away message");
	mi.pszService = MS_AWAYMSG_SHOWAWAYMSG;
	hAwayMsgMenuItem = Menu_AddContactMenuItem(&mi);

	CreateServiceFunction(MS_SIMPLESTATUSMSG_COPYMSG, CopyAwayMsgCommand);
	mi.position = -2000006000;
	mi.hIcolibItem = GetIconHandle(IDI_COPY);
	mi.name.t = LPGENT("Copy Away message");
	mi.pszService = MS_SIMPLESTATUSMSG_COPYMSG;
	hCopyMsgMenuItem = Menu_AddContactMenuItem(&mi);

	CreateServiceFunction(MS_SIMPLESTATUSMSG_GOTOURLMSG, GoToURLMsgCommand);
	mi.position = -2000007000;
	mi.hIcolibItem = GetIconHandle(IDI_GOTOURL);
	mi.name.t = LPGENT("&Go to URL in Away message");
	mi.pszService = MS_SIMPLESTATUSMSG_GOTOURLMSG;
	hGoToURLMenuItem = Menu_AddContactMenuItem(&mi);

	HookEvent(ME_CLIST_PREBUILDCONTACTMENU, AwayMsgPreBuildMenu);

	return 0;
}