#include <QTabWidget>
#include <QPushButton>
#include <QLabel>
#include <QStatusBar>
#include <QSplitter>
#include <QScrollArea>
#include <QTableWidget>

#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(new QLabel("Loading relations...", widget.statusbar));


	// TODO: remove; just demo
	QPushButton* emitButton = new QPushButton("emit", widget.statusbar);
	statusBar()->addWidget(emitButton);
	QObject::connect(
			emitButton, &QPushButton::pressed,
			this, &RelpipeChartMainWindow::slot123
			);
	// ---

	setCentralWidget(tabs);

}

RelpipeChartMainWindow::~RelpipeChartMainWindow() {
}

void RelpipeChartMainWindow::slot123() {
	// TODO: remove; just demo
	statusBar()->addWidget(new QPushButton("slot123", widget.statusbar));
}

void RelpipeChartMainWindow::startRelation(string_t name, std::vector<AttributeMetadata> attributes) {
	attributeCounter = 0;
	QSplitter* splitter = new QSplitter(Qt::Orientation::Vertical, tabs);

	currentTable = new QTableWidget(0, attributes.size(), splitter);
	QStringList headers;
	for (AttributeMetadata a : attributes) headers << QString::fromWCharArray(a.getAttributeName().c_str());
	currentTable->setHorizontalHeaderLabels(headers);
	currentTable->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeMode::ResizeToContents);

	// TODO: chart
	splitter->addWidget(new QPushButton("here will be the chart", splitter));
	splitter->addWidget(currentTable);
	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) {
	// TODO: draw chart
	integer_t column = attributeCounter % currentTable->columnCount();
	integer_t row = attributeCounter / currentTable->columnCount();
	if (row >= currentTable->rowCount()) currentTable->insertRow(currentTable->rowCount());
	currentTable->setItem(row, column, new QTableWidgetItem(QString::fromWCharArray(value.c_str())));
	attributeCounter++;
}

void RelpipeChartMainWindow::endOfPipe() {
	// TODO: just display a message
	statusBar()->addWidget(new QPushButton("endOfPipe", widget.statusbar));
}