/*
 * 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 "qtutils.h"

#include <QDebug>

namespace olive
{

int QtUtils::QFontMetricsWidth(QFontMetrics fm, const QString &s)
{
#if QT_VERSION < QT_VERSION_CHECK(5, 11, 0)
	return fm.width(s);
#else
	return fm.horizontalAdvance(s);
#endif
}

QFrame *QtUtils::CreateHorizontalLine()
{
	QFrame *horizontal_line = new QFrame();
	horizontal_line->setFrameShape(QFrame::HLine);
	horizontal_line->setFrameShadow(QFrame::Sunken);
	return horizontal_line;
}

QFrame *QtUtils::CreateVerticalLine()
{
	QFrame *l = CreateHorizontalLine();
	l->setFrameShape(QFrame::VLine);
	return l;
}

int QtUtils::MsgBox(QWidget *parent, QMessageBox::Icon icon,
					const QString &title, const QString &message,
					QMessageBox::StandardButtons buttons)
{
	QMessageBox b(parent);
	b.setIcon(icon);
	b.setWindowModality(Qt::WindowModal);
	b.setWindowTitle(title);
	b.setText(message);

	uint mask = QMessageBox::FirstButton;
	while (mask <= QMessageBox::LastButton) {
		uint sb = buttons & mask;
		if (sb) {
			b.addButton(static_cast<QMessageBox::StandardButton>(sb));
		}
		mask <<= 1;
	}

	return b.exec();
}

QDateTime QtUtils::GetCreationDate(const QFileInfo &info)
{
#if QT_VERSION < QT_VERSION_CHECK(5, 10, 0)
	return info.created();
#else
	QDateTime t = info.birthTime();
	if (!t.isValid()) {
		t = info.metadataChangeTime();
	}
	return t;
#endif
}

QString QtUtils::GetFormattedDateTime(const QDateTime &dt)
{
	return dt.toString(Qt::TextDate);
}

QStringList QtUtils::WordWrapString(const QString &s, const QFontMetrics &fm,
									int bounding_width)
{
	QStringList list;

	QStringList lines = s.split('\n');

	// Iterate every line
	for (int i = 0; i < lines.size(); i++) {
		QString this_line = lines.at(i);

		while (this_line.size() > 1 &&
			   QFontMetricsWidth(fm, this_line) >= bounding_width) {
			int old_size = this_line.size();
			int hard_break = -1;

			for (int j = this_line.size() - 1; j >= 0; j--) {
				const QChar &char_test = this_line.at(j);

				if (char_test.isSpace() || char_test == '-') {
					if (QFontMetricsWidth(fm, this_line.left(j)) <
						bounding_width) {
						if (!char_test.isSpace()) {
							j++;
						}

						QString chopped = this_line.left(j);

						list.append(chopped);

						while (j < this_line.size() &&
							   this_line.at(j).isSpace()) {
							j++;
						}
						this_line.remove(0, j);
						break;
					}
				} else if (hard_break == -1 &&
						   QFontMetricsWidth(fm, this_line.left(j)) <
							   bounding_width) {
					// In case we can't find a better place to split, split at the earliest time the line
					// goes under the width limit
					hard_break = j;
				}
			}

			if (old_size == this_line.size()) {
				if (hard_break != -1) {
					list.append(this_line.left(hard_break));
					this_line.remove(0, hard_break);
				} else {
					qWarning()
						<< "Failed to find anywhere to wrap. Returning full line.";
					break;
				}
			}
		}

		if (!this_line.isEmpty()) {
			list.append(this_line);
		}
	}

	return list;
}

Qt::KeyboardModifiers
QtUtils::FlipControlAndShiftModifiers(Qt::KeyboardModifiers e)
{
	if (e & Qt::ControlModifier & Qt::ShiftModifier) {
		return e;
	}

	if (e & Qt::ShiftModifier) {
		e |= Qt::ControlModifier;
		e &= ~Qt::ShiftModifier;
	} else if (e & Qt::ControlModifier) {
		e |= Qt::ShiftModifier;
		e &= ~Qt::ControlModifier;
	}

	return e;
}

void QtUtils::SetComboBoxData(QComboBox *cb, int data)
{
	for (int i = 0; i < cb->count(); i++) {
		if (cb->itemData(i).toInt() == data) {
			cb->setCurrentIndex(i);
			break;
		}
	}
}

void QtUtils::SetComboBoxData(QComboBox *cb, const QString &data)
{
	for (int i = 0; i < cb->count(); i++) {
		if (cb->itemData(i).toString() == data) {
			cb->setCurrentIndex(i);
			break;
		}
	}
}

QColor QtUtils::toQColor(const core::Color &i)
{
	QColor c;

	// QColor only supports values from 0.0 to 1.0 and are only used for UI representations
	c.setRedF(std::clamp(i.red(), 0.0f, 1.0f));
	c.setGreenF(std::clamp(i.green(), 0.0f, 1.0f));
	c.setBlueF(std::clamp(i.blue(), 0.0f, 1.0f));
	c.setAlphaF(std::clamp(i.alpha(), 0.0f, 1.0f));

	return c;
}

namespace core
{

uint qHash(const core::rational &r, uint seed)
{
	return ::qHash(r.toDouble(), seed);
}

uint qHash(const core::TimeRange &r, uint seed)
{
	return qHash(r.in(), seed) ^ qHash(r.out(), seed);
}

}

}