/***

  Olive - Non-Linear Video Editor
  Copyright (C) 2022 Olive Team
  Modifications Copyright (C) 2025 mikesolar

  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 "preferencesdisktab.h"

#include <QDir>
#include <QFileDialog>
#include <QGridLayout>
#include <QGroupBox>
#include <QLabel>
#include <QMessageBox>

#include "common/filefunctions.h"

namespace olive
{

PreferencesDiskTab::PreferencesDiskTab()
{
	// Get default disk cache folder
	default_disk_cache_folder_ =
		DiskManager::instance()->GetDefaultCacheFolder();

	QVBoxLayout *outer_layout = new QVBoxLayout(this);

	QGroupBox *disk_management_group = new QGroupBox(tr("Disk Management"));
	outer_layout->addWidget(disk_management_group);

	QGridLayout *disk_management_layout =
		new QGridLayout(disk_management_group);

	int row = 0;

	disk_management_layout->addWidget(new QLabel(tr("Disk Cache Location:")),
									  row, 0);

	disk_cache_location_ =
		new PathWidget(default_disk_cache_folder_->GetPath());
	disk_management_layout->addWidget(disk_cache_location_, row, 1);

	row++;

	QPushButton *disk_cache_settings_btn =
		new QPushButton(tr("Disk Cache Settings"));
	connect(disk_cache_settings_btn, &QPushButton::clicked, this, [this]() {
		DiskManager::instance()->ShowDiskCacheSettingsDialog(
			disk_cache_location_->text(), this);
	});
	disk_management_layout->addWidget(disk_cache_settings_btn, row, 1);

	row++;

	QGroupBox *cache_behavior = new QGroupBox(tr("Cache Behavior"));
	outer_layout->addWidget(cache_behavior);
	QGridLayout *cache_behavior_layout = new QGridLayout(cache_behavior);

	row = 0;

	cache_behavior_layout->addWidget(new QLabel(tr("Cache Ahead:")), row, 0);

	cache_ahead_slider_ = new FloatSlider();
	cache_ahead_slider_->SetFormat(tr("%1 seconds"));
	cache_ahead_slider_->SetMinimum(0);
	cache_ahead_slider_->SetValue(
		OLIVE_CONFIG("DiskCacheAhead").value<rational>().toDouble());
	cache_behavior_layout->addWidget(cache_ahead_slider_, row, 1);

	cache_behavior_layout->addWidget(new QLabel(tr("Cache Behind:")), row, 2);

	cache_behind_slider_ = new FloatSlider();
	cache_behind_slider_->SetMinimum(0);
	cache_behind_slider_->SetFormat(tr("%1 seconds"));
	cache_behind_slider_->SetValue(
		OLIVE_CONFIG("DiskCacheBehind").value<rational>().toDouble());
	cache_behavior_layout->addWidget(cache_behind_slider_, row, 3);

	outer_layout->addStretch();
}

bool PreferencesDiskTab::Validate()
{
	if (disk_cache_location_->text() != default_disk_cache_folder_->GetPath()) {
		// Disk cache location is changing

		// Check if the user is okay with invalidating the current cache
		if (!DiskManager::ShowDiskCacheChangeConfirmationDialog(this)) {
			return false;
		}

		// Check validity of the new path
		if (!FileFunctions::DirectoryIsValid(disk_cache_location_->text())) {
			QMessageBox::critical(
				this, tr("Disk Cache"),
				tr("Failed to set disk cache location. Access was denied."));
			return false;
		}
	}

	return true;
}

void PreferencesDiskTab::Accept(MultiUndoCommand *command)
{
	Q_UNUSED(command)

	if (disk_cache_location_->text() != default_disk_cache_folder_->GetPath()) {
		default_disk_cache_folder_->SetPath(disk_cache_location_->text());
	}

	OLIVE_CONFIG("DiskCacheBehind") = QVariant::fromValue(
		rational::fromDouble(cache_behind_slider_->GetValue()));
	OLIVE_CONFIG("DiskCacheAhead") = QVariant::fromValue(
		rational::fromDouble(cache_ahead_slider_->GetValue()));
}

}