/*
 * Oak Video Editor - Non-Linear Video Editor
 * Copyright (C) 2025 Olive CE Team
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

#include "ratiodialog.h"

#include <QCoreApplication>
#include <QMessageBox>
#include <QRegularExpression>

namespace olive
{

double GetFloatRatioFromUser(QWidget *parent, const QString &title, bool *ok_in)
{
	QString s;

	forever
	{
		bool ok;

		s = QInputDialog::getText(
			parent, title,
			QCoreApplication::translate(
				"RatioDialog",
				"Enter custom ratio (e.g. \"4:3\", \"16/9\", etc.):"),
			QLineEdit::Normal, s, &ok);

		if (!ok) {
			// User cancelled dialog, do nothing
			if (ok_in) {
				*ok_in = false;
			}
			return qSNaN();
		}

		QStringList ratio_components =
			s.split(QRegularExpression(QStringLiteral(":|;|\\/")));

		if (ratio_components.size() == 1) {
			bool float_ok;

			double flt = ratio_components.at(0).toDouble(&float_ok);

			if (float_ok && flt > 0) {
				if (ok_in) {
					*ok_in = true;
				}
				return flt;
			}
		} else if (ratio_components.size() == 2) {
			bool numer_ok, denom_ok;

			double num = ratio_components.at(0).toDouble(&numer_ok);
			double den = ratio_components.at(1).toDouble(&denom_ok);

			if (numer_ok && denom_ok && num > 0 && den > 0) {
				// Exit loop and set this ratio
				if (ok_in) {
					*ok_in = true;
				}
				return num / den;
			}
		}

		QMessageBox::warning(
			parent,
			QCoreApplication::translate("RatioDialog", "Invalid custom ratio"),
			QCoreApplication::translate(
				"RatioDialog",
				"Failed to parse \"%1\" into an aspect ratio. Please format a "
				"rational fraction with a ':' or a '/' separator.")
				.arg(s),
			QMessageBox::Ok);
	}
}

}