/*
 * Copyright (c) 2021 joshua stein <jcs@jcs.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <stdio.h>
#include <string.h>

#include "amend.h"
#include "settings.h"
#include "tetab.h"
#include "util.h"

struct settings settings = { 0 };

void
settings_load(void)
{
	char *author;
	
	author = xGetStringAsChar(STR_AUTHOR_ID);
	strlcpy(settings.author, author, sizeof(settings.author));
	xfree(&author);
	if (settings.author[0] == '\0')
		snprintf(settings.author, sizeof(settings.author), "unknown");
	
	settings.tabwidth = (short)xGetStringAsLong(STR_TABWIDTH_ID);
	if (settings.tabwidth < 1 || settings.tabwidth > 20)
		settings.tabwidth = 4;
	
	settings.max_amendments = (short)xGetStringAsLong(STR_MAX_AMENDMENTS_ID);
	if (settings.max_amendments < 0)
		settings.max_amendments = 0;
	
	TETabWidth = settings.tabwidth;
}

void
settings_save(void)
{
	Handle res;
	size_t l;
	char tmp[8];
	
	res = xGetResource('STR ', STR_AUTHOR_ID);
	HLock(res);
	l = strlen(settings.author);
	xSetHandleSize(res, l + 1);
	memcpy(*res, settings.author, l + 1);
	CtoPstr(*res);
	ChangedResource(res);
	ReleaseResource(res);

	res = xGetResource('STR ', STR_TABWIDTH_ID);
	HLock(res);
	snprintf(tmp, sizeof(tmp), "%d", settings.tabwidth);
	l = strlen(tmp);
	xSetHandleSize(res, l + 1);
	memcpy(*res, tmp, l + 1);
	CtoPstr(*res);
	ChangedResource(res);
	ReleaseResource(res);

	res = xGetResource('STR ', STR_MAX_AMENDMENTS_ID);
	HLock(res);
	snprintf(tmp, sizeof(tmp), "%d", settings.max_amendments);
	l = strlen(tmp);
	xSetHandleSize(res, l + 1);
	memcpy(*res, tmp, l + 1);
	CtoPstr(*res);
	ChangedResource(res);
	ReleaseResource(res);
	
	UpdateResFile(CurResFile());
	if (ResError())
		warn("UpdateResFile failed! %d", ResError());
	
	TETabWidth = settings.tabwidth;
}

void
settings_edit(void)
{
	Str255 txt;
	Handle ihandle;
	short itype, hit;
	bool done;
	DialogPtr dlg;
	Rect irect;

	dlg = GetNewDialog(SETTINGS_DLOG_ID, nil, (WindowPtr)-1);
	if (dlg == NULL)
		err(1, "Can't find settings DLOG %d", SETTINGS_DLOG_ID);

	GetDItem(dlg, SETTINGS_AUTHOR_ID, &itype, &ihandle, &irect);
	strlcpy((char *)txt, settings.author, sizeof(txt));
	CtoPstr(txt);
	SetIText(ihandle, txt);

	GetDItem(dlg, SETTINGS_TABWIDTH_ID, &itype, &ihandle, &irect);
	snprintf((char *)txt, sizeof(txt), "%d", settings.tabwidth);
	CtoPstr(txt);
	SetIText(ihandle, txt);

	GetDItem(dlg, SETTINGS_MAX_AMENDMENTS_ID, &itype, &ihandle, &irect);
	snprintf((char *)txt, sizeof(txt), "%d", settings.max_amendments);
	CtoPstr(txt);
	SetIText(ihandle, txt);
	
	ShowWindow(dlg);
	
dialog_wait:
	done = false;
	while (!done) {
		ModalDialog(nil, &hit);
		switch (hit) {
		case SETTINGS_SAVE_ID:
			done = true;
			break;
		case SETTINGS_CANCEL_ID:
			goto dialog_close;
		}
	}
	
	GetDItem(dlg, SETTINGS_AUTHOR_ID, &itype, &ihandle, &irect);
	GetIText(ihandle, txt);
	PtoCstr(txt);
	if (strlen((char *)&txt) >= sizeof(settings.author)) {
		warn("Author setting is too long (%ld max)",
		  sizeof(settings.author) - 1);
		goto dialog_wait;
	}
	
	memcpy(settings.author, txt, strlen((char *)&txt) + 1);

	GetDItem(dlg, SETTINGS_TABWIDTH_ID, &itype, &ihandle, &irect);
	GetIText(ihandle, txt);
	PtoCstr(txt);
	settings.tabwidth = atoi((char *)&txt);
	if (settings.tabwidth < 1)
		settings.tabwidth = 1;
	HUnlock(ihandle);

	GetDItem(dlg, SETTINGS_MAX_AMENDMENTS_ID, &itype, &ihandle, &irect);
	GetIText(ihandle, txt);
	PtoCstr(txt);
	settings.max_amendments = atoi((char *)&txt);
	if (settings.max_amendments < 0)
		settings.max_amendments = 0;
	HUnlock(ihandle);
	
	settings_save();

dialog_close:
	DisposeDialog(dlg);
}