#include <stdio.h>
#include <windows.h>
#include <commctrl.h>
#include <SWI-Prolog.h>

#include "resource.h"
#include "defs.h"

HWND HDlv;

HWND
DlvCreate()
{
	LVCOLUMN lvc;

	HDlv = LvCreate((HMENU)IDC_DATALISTVIEW);

	lvc.mask = LVCF_WIDTH|LVCF_TEXT|LVCF_SUBITEM;
	lvc.iSubItem = 0;
	lvc.pszText = TEXT("Key");

	lvc.cx = Dpi(42);
	ListView_InsertColumn(HDlv, 0, &lvc);

	lvc.iSubItem = 1;
	lvc.pszText = TEXT("Value");
	lvc.cx = 500;
	ListView_InsertColumn(HDlv, 1, &lvc);

	return HDlv;
}

/* Show episode data. */
void
DlvShowEpisode(int iEpisode)
{
	LVITEM lviKey, lviValue;
	term_t t;

	ListView_DeleteAllItems(HDlv);

	lviKey.mask = LVIF_TEXT;
	lviValue.mask = LVIF_TEXT;

	t = T(3);
	PI(t,iEpisode) return;
	P("episode_data","lookup_episode_local",3,t) return;

	/* The episode data is a list of unary compounds, whose
	 * functor is the key and whose argument is the value.
	 * (Perhaps this should really be implemented in Prolog.) */

	{
		term_t tHead, tList;

		tHead = PL_new_term_ref();
		tList = PL_copy_term_ref(t+2);

		for (int i = 0; PL_get_list(tList, tHead, tList); i++) {
			atom_t aKey;
			const char *szKey;
			char *szValue;
			TCHAR *tszKey, *tszValue;
			term_t tValue;
			size_t iArity;

			if (!PL_get_name_arity(tHead,&aKey,&iArity)) continue;
			szKey = PL_atom_chars(aKey);
			if (!szKey) continue;

			tValue = PL_new_term_ref();
			if (!PL_get_arg(1, tHead, tValue)) continue;
			GAC(tValue,&szValue) continue;

			tszKey = TszFromSz(szKey, CP_UTF8);
			if (!tszKey) continue;
			tszValue = TszFromSz(szValue, CP_UTF8);
			if (!tszValue) goto c;

			lviKey.mask = LVIF_TEXT;
			lviKey.iItem = i;
			lviKey.iSubItem = 0;
			lviKey.pszText = tszKey;
			ListView_InsertItem(HDlv, &lviKey);

			lviValue.iItem = i;
			lviValue.iSubItem = 1;
			lviValue.pszText = tszValue;
			ListView_SetItem(HDlv, &lviValue);

			free(tszValue);
		c:	free(tszKey);
		}
	}

	UpdateLayout();
}