/**

 * Relational pipes

 * Copyright © 2018 František Kučera (Frantovo.cz, GlobalCode.info)

 *

 * 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, version 3 of the License.

 *

 * 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 <vector>

#include <QPushButton>

#include <QTableView>

#include <QAction>

#include "RelpipeChartMainWindow.h"

using namespace relpipe::reader;

using namespace relpipe::reader::handlers;

RelpipeChartMainWindow::RelpipeChartMainWindow() {

	widget.setupUi(this);

	int optionsIndex = tabs->addTab(new QPushButton("here will be options", tabs), "Options");

	tabs->setTabIcon(optionsIndex, QIcon::fromTheme("configure"));

	statusBar()->addWidget(status);

	setCentralWidget(tabs);

	setupKeyboardShortcuts();

}

void RelpipeChartMainWindow::setupKeyboardShortcuts() {

	// TODO: less boilerplate code

	QAction* nextTabAction = new QAction(this);

	nextTabAction->setShortcut(Qt::Key_PageDown | Qt::CTRL);

	connect(nextTabAction, &QAction::triggered, this, &RelpipeChartMainWindow::selectNextTab);

	this->addAction(nextTabAction);

	QAction* previousTabAction = new QAction(this);

	previousTabAction->setShortcut(Qt::Key_PageUp | Qt::CTRL);

	connect(previousTabAction, &QAction::triggered, this, &RelpipeChartMainWindow::selectPreviousTab);

	this->addAction(previousTabAction);

	QAction* quitAction = new QAction(this);

	quitAction->setShortcut(Qt::Key_Q | Qt::CTRL);

	connect(quitAction, &QAction::triggered, this, &RelpipeChartMainWindow::close);

	this->addAction(quitAction);

}

RelpipeChartMainWindow::~RelpipeChartMainWindow() {

}

void RelpipeChartMainWindow::selectNextTab() {

	tabs->setCurrentIndex((tabs->currentIndex() + 1) % tabs->count());

}

void RelpipeChartMainWindow::selectPreviousTab() {

	tabs->setCurrentIndex((tabs->count() + tabs->currentIndex() - 1) % tabs->count());

}

void RelpipeChartMainWindow::startRelation(const string_t name, std::vector<AttributeMetadata> attributes) {

	setStatusMessage(L"Reading relation: " + name);

	currentModel = new RelpipeTableModel(attributes, this);

	QTableView* tableView = new QTableView(this);

	tableView->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeMode::ResizeToContents);

	tableView->setModel(currentModel);

	if (currentChartWidget) currentChartWidget->endOfRelation();

	splitter = new QSplitter(Qt::Orientation::Vertical, tabs);

	currentChartWidget = new RelpipeChartWidget(currentModel, splitter);

	splitter->addWidget(currentChartWidget);

	splitter->addWidget(tableView);

	splitter->setSizes({currentChartWidget->hasChartData() ? 1 : 0, 1});

	// splitter->setStretchFactor(currentChartWidget->hasChartData() ? 1 : 0, 1); // FIXME: 50:50 if chart is present

	int index = tabs->addTab(splitter, QString::fromWCharArray(name.c_str()));

	if (tabs->count() == 2) tabs->setCurrentIndex(index); // switch to the first relation (first tab is Options tab)

	tabs->setTabIcon(index, QIcon::fromTheme("application-vnd.oasis.opendocument.spreadsheet"));

}

void RelpipeChartMainWindow::attribute(const string_t value) {

	currentModel->addAttribute(value);

}

void RelpipeChartMainWindow::setStatusMessage(string_t message) {

	status->setText(QString::fromWCharArray(message.c_str()));

}

void RelpipeChartMainWindow::endOfPipe() {

	if (currentChartWidget) currentChartWidget->endOfRelation();

	setStatusMessage(L"Reading successfully finished.");

}