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#include <QFileDialog>
#include <QMenu>
#include <QMessageBox>
#include <ui_librarieseditor.h>
#include "src/settingseditor/librarieseditor.h"

LibrariesEditor::LibrariesEditor(QWidget* parent) :
	QWidget{parent},
	ui{*new Ui_LibrariesEditor}
{
	this->ui.setupUi(this);
	connect(
		this->ui.newLibrarySearch,
		&QPushButton::clicked,
		this,
		&LibrariesEditor::searchPathForNewLibrary);
	connect(
		this->ui.newLibraryAdd,
		&QPushButton::clicked,
		this,
		&LibrariesEditor::addNewLibrary);
	this->ui.librariesTable->setContextMenuPolicy(Qt::CustomContextMenu);
	connect(
		this->ui.librariesTable,
		&QWidget::customContextMenuRequested,
		this,
		&LibrariesEditor::showContextMenu);
	this->setEnabled(false);
}

LibrariesEditor::~LibrariesEditor()
{
	delete &this->ui;
}

void LibrariesEditor::searchPathForNewLibrary()
{
	const QString path = QFileDialog::getExistingDirectory(this, tr("Browse LDraw library"));
	if (not path.isEmpty())
	{
		this->ui.newLibraryPath->setText(path);
	}
}

void LibrariesEditor::addNewLibrary()
{
	if (LibrariesModel* model = this->currentModel()) {
		const QDir dir{this->ui.newLibraryPath->text()};
		if (not dir.exists())
		{
			QMessageBox::critical(
			this,
			tr("Library does not exist"),
			tr("The directory %1 does not exist.").arg(quoted(dir.path()))
			);
		}
		else
		{
			if (not dir.isReadable())
			{
				QMessageBox::warning(this,
				tr("Unreadable library"),
				tr("The directory %1 cannot be read.").arg(quoted(dir.path()))
				);
			}
			model->addLibrary({Library::OfficialLibrary, dir});
			this->ui.newLibraryPath->clear();
		}
	}
}

void LibrariesEditor::showContextMenu(const QPoint position)
{
	const index_t libraryIndex = this->currentLibraryIndex();
	LibrariesModel* model = this->currentModel();
	if (model != nullptr and model->isValidIndex(libraryIndex))
	{
		QMenu* contextMenu = new QMenu{this};
		QAction* removeAction = new QAction{tr("Remove library")};
		connect(
			removeAction,
			&QAction::triggered,
			this,
			&LibrariesEditor::removeCurrentLibrary);
		QMenu* roleMenu = new QMenu{tr("Set role"), contextMenu};
		for (const Library::Role role : Library::allRoles)
		{
			QAction* setRoleAction = new QAction{Library::libraryRoleName(role)};
			setRoleAction->setData(role);
			roleMenu->addAction(setRoleAction);
			connect(
				setRoleAction,
				&QAction::triggered,
				this,
				&LibrariesEditor::setCurrentLibraryRole);
		}
		QAction* moveUpAction = new QAction{tr("Move up")};
		connect(
			moveUpAction,
			&QAction::triggered,
			this,
			&LibrariesEditor::moveCurrentLibraryUp);
		QAction* moveDownAction = new QAction{tr("Move down")};
		connect(
			moveDownAction,
			&QAction::triggered,
			this,
			&LibrariesEditor::moveCurrentLibraryDown);
		contextMenu->addMenu(roleMenu);
		contextMenu->addSeparator();
		contextMenu->addAction(moveDownAction);
		contextMenu->addAction(moveUpAction);
		contextMenu->addAction(removeAction);
		contextMenu->popup(this->ui.librariesTable->mapToGlobal(position));
	}
}

void LibrariesEditor::setCurrentLibraryRole()
{
	if (LibrariesModel* model = this->currentModel()) {
		const index_t libraryIndex = currentLibraryIndex();
		QObject* senderObject = sender();
		QAction* senderAction = qobject_cast<QAction*>(senderObject);
		const Library::Role role = senderAction->data().value<Library::Role>();
		model->setLibraryRole(libraryIndex, role);
	}
}

void LibrariesEditor::removeCurrentLibrary()
{
	if (LibrariesModel* model = this->currentModel()) {
		model->removeLibrary(currentLibraryIndex());
	}
}

void LibrariesEditor::moveCurrentLibraryUp()
{
	if (LibrariesModel* model = this->currentModel()) {
		const index_t libraryIndex = this->currentLibraryIndex();
		model->moveLibrary(libraryIndex, libraryIndex - 1);
	}
}

void LibrariesEditor::moveCurrentLibraryDown()
{
	if (LibrariesModel* model = this->currentModel()) {
		const index_t libraryIndex = this->currentLibraryIndex();
		model->moveLibrary(libraryIndex + 1, libraryIndex);
	}
}

LibrariesModel *LibrariesEditor::currentModel()
{
	return qobject_cast<LibrariesModel*>(this->ui.librariesTable->model());
}

index_t LibrariesEditor::currentLibraryIndex() const
{
	return this->ui.librariesTable->selectionModel()->currentIndex().row();
}

void LibrariesEditor::saveSettings()
{
	if (LibrariesModel* model = this->currentModel()) {
		model->storeToSettings();
	}
}

void LibrariesEditor::setModel(LibrariesModel *model)
{
	this->ui.librariesTable->setModel(model);
	this->setEnabled(model != nullptr);
}