#include "stdafx.h"

static void SetListGroupIcons(HWND hwndList, HANDLE hFirstItem, HANDLE hParentItem, int *groupChildCount)
{
	int iconOn = 1;
	int childCount = 0;
	int iImage;
	HANDLE hItem;

	int typeOfFirst = SendMessage(hwndList, CLM_GETITEMTYPE, (WPARAM)hFirstItem, 0);

	//check groups
	if (typeOfFirst == CLCIT_GROUP)
		hItem = hFirstItem;
	else
		hItem = (HANDLE)SendMessage(hwndList, CLM_GETNEXTITEM, CLGN_NEXTGROUP, (LPARAM)hFirstItem);
	while (hItem) {
		HANDLE hChildItem = (HANDLE)SendMessage(hwndList, CLM_GETNEXTITEM, CLGN_CHILD, (LPARAM)hItem);
		if (hChildItem)
			SetListGroupIcons(hwndList, hChildItem, hItem, &childCount);
		if (iconOn && SendMessage(hwndList, CLM_GETEXTRAIMAGE, (WPARAM)hItem, 0) == 0)
			iconOn = 0;
		hItem = (HANDLE)SendMessage(hwndList, CLM_GETNEXTITEM, CLGN_NEXTGROUP, (LPARAM)hItem);
	}

	//check contacts
	if (typeOfFirst == CLCIT_CONTACT)
		hItem = hFirstItem;
	else
		hItem = (HANDLE)SendMessage(hwndList, CLM_GETNEXTITEM, CLGN_NEXTCONTACT, (LPARAM)hFirstItem);
	while (hItem) {
		iImage = SendMessage(hwndList, CLM_GETEXTRAIMAGE, (WPARAM)hItem, 0);
		if (iconOn && iImage == 0)
			iconOn = 0;
		if (iImage != EMPTY_EXTRA_ICON)
			childCount++;
		hItem = (HANDLE)SendMessage(hwndList, CLM_GETNEXTITEM, CLGN_NEXTCONTACT, (LPARAM)hItem);
	}
	//set icons
	SendMessage(hwndList, CLM_SETEXTRAIMAGE, (WPARAM)hParentItem, MAKELPARAM(0, childCount ? (iconOn ? 1 : 0) : EMPTY_EXTRA_ICON));
	if (groupChildCount)
		*groupChildCount += childCount;
}

static void SetAllChildIcons(HWND hwndList, HANDLE hFirstItem, int iColumn, int iImage)
{
	HANDLE hItem;

	int typeOfFirst = SendMessage(hwndList, CLM_GETITEMTYPE, (WPARAM)hFirstItem, 0);
	//check groups
	if (typeOfFirst == CLCIT_GROUP) hItem = hFirstItem;
	else hItem = (HANDLE)SendMessage(hwndList, CLM_GETNEXTITEM, CLGN_NEXTGROUP, (LPARAM)hFirstItem);
	while (hItem) {
		HANDLE hChildItem = (HANDLE)SendMessage(hwndList, CLM_GETNEXTITEM, CLGN_CHILD, (LPARAM)hItem);
		if (hChildItem)
			SetAllChildIcons(hwndList, hChildItem, iColumn, iImage);
		hItem = (HANDLE)SendMessage(hwndList, CLM_GETNEXTITEM, CLGN_NEXTGROUP, (LPARAM)hItem);
	}
	//check contacts
	if (typeOfFirst == CLCIT_CONTACT)
		hItem = hFirstItem;
	else
		hItem = (HANDLE)SendMessage(hwndList, CLM_GETNEXTITEM, CLGN_NEXTCONTACT, (LPARAM)hFirstItem);

	while (hItem) {
		int iOldIcon = SendMessage(hwndList, CLM_GETEXTRAIMAGE, (WPARAM)hItem, iColumn);
		if (iOldIcon != EMPTY_EXTRA_ICON && iOldIcon != iImage)
			SendMessage(hwndList, CLM_SETEXTRAIMAGE, (WPARAM)hItem, MAKELPARAM(iColumn, iImage));
		hItem = (HANDLE)SendMessage(hwndList, CLM_GETNEXTITEM, CLGN_NEXTCONTACT, (LPARAM)hItem);
	}
}

static void ResetListOptions(HWND hwndList)
{
	SetWindowLongPtr(hwndList, GWL_STYLE, GetWindowLongPtr(hwndList, GWL_STYLE) | CLS_SHOWHIDDEN);
}

static void SetAllContactIcons(HWND hwndList)
{
	for (auto &hContact : Contacts()) {
		char *proto = GetContactProto(hContact);
		bool chat_room = (proto && db_get_b(hContact, proto, "ChatRoom", 0) != 0);

		if (!chat_room) {
			HANDLE hItem = (HANDLE)SendMessage(hwndList, CLM_FINDCONTACT, hContact, 0);
			if (hItem) {
				bool disabled = (g_plugin.getByte(hContact, DBSETTING_REMOVE) == 1);
				SendMessage(hwndList, CLM_SETEXTRAIMAGE, (WPARAM)hItem, MAKELPARAM(0, disabled ? 1 : 0));
			}
		}
	}
}

static INT_PTR CALLBACK DlgProcOpts(HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM lParam)
{
	static HANDLE hItemAll;
	static HWND hwndList;

	switch (msg) {
	case WM_INITDIALOG:
		TranslateDialogDefault(hwndDlg);
		hwndList = GetDlgItem(hwndDlg, IDC_LIST);
		{
			HIMAGELIST hIml = ImageList_Create(GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON), ILC_COLOR32 | ILC_MASK, 2, 2);
			g_plugin.addImgListIcon(hIml, IDI_HKEEP);
			g_plugin.addImgListIcon(hIml, IDI_HREMOVE);
			SendMessage(hwndList, CLM_SETEXTRAIMAGELIST, 0, (LPARAM)hIml);
			
			SendDlgItemMessage(hwndDlg, IDC_PIC_KEEP, STM_SETICON, (WPARAM)g_plugin.getIcon(IDI_HKEEP), 0);
			SendDlgItemMessage(hwndDlg, IDC_PIC_REMOVE, STM_SETICON, (WPARAM)g_plugin.getIcon(IDI_HREMOVE), 0);
		}
		ResetListOptions(hwndList);
		SendMessage(hwndList, CLM_SETEXTRACOLUMNS, 1, 0);
		{
			CLCINFOITEM cii = { sizeof(cii) };
			cii.flags = CLCIIF_GROUPFONT;
			cii.pszText = TranslateT("** All contacts **");
			hItemAll = (HANDLE)SendMessage(hwndList, CLM_ADDINFOITEM, 0, (LPARAM)&cii);
		}

		SetAllContactIcons(hwndList);
		SetListGroupIcons(hwndList, (HANDLE)SendMessage(hwndList, CLM_GETNEXTITEM, CLGN_ROOT, 0), hItemAll, nullptr);

		SendDlgItemMessage(hwndDlg, IDC_SPN_TIMEOUT, UDM_SETRANGE, 0, (LPARAM)MAKELONG(60 * 60, 1));
		return FALSE;

	case WM_SETFOCUS:
		SetFocus(hwndList);
		break;

	case WM_COMMAND:
		if (HIWORD(wParam) == EN_CHANGE && (HWND)lParam == GetFocus())
			SendMessage(GetParent(hwndDlg), PSM_CHANGED, 0, 0);
		break;

	case WM_NOTIFY:
		switch (((LPNMHDR)lParam)->idFrom) {
		case IDC_LIST:
			switch (((LPNMHDR)lParam)->code) {
			case CLN_NEWCONTACT:
			case CLN_LISTREBUILT:
				SetAllContactIcons(hwndList);
				//fall through
			case CLN_CONTACTMOVED:
				SetListGroupIcons(hwndList, (HANDLE)SendMessage(hwndList, CLM_GETNEXTITEM, CLGN_ROOT, 0), hItemAll, nullptr);
				break;

			case CLN_OPTIONSCHANGED:
				ResetListOptions(hwndList);
				break;

			case NM_CLICK:
				// Make sure we have an extra column
				NMCLISTCONTROL *nm = (NMCLISTCONTROL*)lParam;
				if (nm->iColumn == -1)
					break;

				// Find clicked item
				DWORD hitFlags;
				HANDLE hItem = (HANDLE)SendMessage(hwndList, CLM_HITTEST, (WPARAM)&hitFlags, MAKELPARAM(nm->pt.x, nm->pt.y));
				if (hItem == nullptr || !(hitFlags & CLCHT_ONITEMEXTRA))
					break;

				// Get image in clicked column (0=none, 1=visible, 2=invisible)
				int iImage = SendMessage(hwndList, CLM_GETEXTRAIMAGE, (WPARAM)hItem, MAKELPARAM(nm->iColumn, 0));
				if (iImage == 0)
					iImage = nm->iColumn + 1;
				else if (iImage == 1)
					iImage = 0;

				// Update list, making sure that the options are mutually exclusive
				switch (SendMessage(hwndList, CLM_GETITEMTYPE, (WPARAM)hItem, 0)) {
				case CLCIT_CONTACT:
					SendMessage(hwndList, CLM_SETEXTRAIMAGE, (WPARAM)hItem, MAKELPARAM(nm->iColumn, iImage));
					break;
				case CLCIT_INFO: // All Contacts
					SetAllChildIcons(hwndList, hItem, nm->iColumn, iImage);
					break;
				case CLCIT_GROUP:
					hItem = (HANDLE)SendMessage(hwndList, CLM_GETNEXTITEM, CLGN_CHILD, (LPARAM)hItem);
					if (hItem)
						SetAllChildIcons(hwndList, hItem, nm->iColumn, iImage);
				}
				// Update the all/none icons
				SetListGroupIcons(hwndList, (HANDLE)SendMessage(hwndList, CLM_GETNEXTITEM, CLGN_ROOT, 0), hItemAll, nullptr);

				// Activate Apply button
				SendMessage(GetParent(hwndDlg), PSM_CHANGED, 0, 0);
			}
			break;

		case 0:
			switch (((LPNMHDR)lParam)->code) {
			case PSN_APPLY:
				for (auto &hContact : Contacts()) {
					char *proto = GetContactProto(hContact);
					bool chat_room = (proto && db_get_b(hContact, proto, "ChatRoom", 0) != 0);

					if (!chat_room) {
						HANDLE hItem = (HANDLE)SendMessage(hwndList, CLM_FINDCONTACT, hContact, 0);
						if (hItem) {
							int iImage = SendMessage(hwndList, CLM_GETEXTRAIMAGE, (WPARAM)hItem, MAKELPARAM(0, 0));
							g_plugin.setByte(hContact, DBSETTING_REMOVE, iImage == 1);
						}
					}
				}
				return TRUE;
			}
		}
		break;

	case WM_DESTROY:
		ImageList_Destroy((HIMAGELIST)SendMessage(hwndList, CLM_GETEXTRAIMAGELIST, 0, 0));
		break;
	}

	return 0;
}

int OptInit(WPARAM wParam, LPARAM)
{
	OPTIONSDIALOGPAGE odp = {};
	odp.flags = ODPF_BOLDGROUPS | ODPF_UNICODE;
	odp.position = -790000000;
	odp.pszTemplate = MAKEINTRESOURCEA(IDD_OPT);
	odp.szTitle.w = LPGENW("No History");
	odp.szGroup.w = LPGENW("History");
	odp.szTab.w = LPGENW("Logging");
	odp.pfnDlgProc = DlgProcOpts;
	g_plugin.addOptions(wParam, &odp);
	return 0;
}