#include <QtDebug>
#include <QFileDialog>
#include <QShortcut>
#include "divelogimportdialog.h"
#include "mainwindow.h"
#include "ui_divelogimportdialog.h"
#include <QAbstractListModel>
#include <QAbstractTableModel>
#include <QMouseEvent>
#include <QDrag>
#include <QMimeData>
#include <QFile>

const DiveLogImportDialog::CSVAppConfig DiveLogImportDialog::CSVApps[CSVAPPS] = {
	// time, depth, temperature, po2, cns, ndl, tts, stopdepth, pressure
	{ "", },
	{ "APD Log Viewer", 1, 2, 16, 7, 18, -1, -1, 19, -1, "Tab" },
	{ "XP5", 1, 2, 10, -1, -1, -1, -1, -1, -1, "Tab" },
	{ "SensusCSV", 10, 11, -1, -1, -1, -1, -1, -1, -1, "," },
	{ "Seabear CSV", 1, 2, 6, -1, -1, 3, 4, 5, 7, ";" },
	{ "SubsurfaceCSV", -1, -1, -1, -1, -1, -1, -1, -1, -1, "," },
	{ NULL, }
};

ColumnNameProvider::ColumnNameProvider(QObject *parent) : QAbstractListModel(parent)
{
	columnNames << tr("Dive #") << tr("Date") << tr("Time") << tr("Duration") << tr("Location") << tr("GPS") << tr("Weight") << tr("Cyl size") << tr("Start Pressure")
		    << tr("End Press") << tr("Max depth") << tr("Mean depth") << tr("Buddy") << tr("Notes") << tr("Tags") << tr("Air temp") << tr("Water temp")
		    << tr("O₂") << tr("He");
}

bool ColumnNameProvider::insertRows(int row, int count, const QModelIndex &parent)
{
	beginInsertRows(QModelIndex(), row, row);
	columnNames.append(QString());
	endInsertRows();
}

bool ColumnNameProvider::removeRows(int row, int count, const QModelIndex &parent)
{
	beginRemoveRows(QModelIndex(), row, row);
	columnNames.removeAt(row);
	qDebug() << "Removing row" << row;
	endRemoveRows();
}

bool ColumnNameProvider::setData(const QModelIndex &index, const QVariant &value, int role)
{
	if (role == Qt::EditRole) {
		columnNames[index.row()] = value.toString();
	}
	dataChanged(index, index);
}

QVariant ColumnNameProvider::data(const QModelIndex &index, int role) const
{
	if (!index.isValid())
		return QVariant();

	if (role != Qt::DisplayRole)
		return QVariant();

	return QVariant(columnNames[index.row()]);
}

int ColumnNameProvider::rowCount(const QModelIndex &parent) const
{
	Q_UNUSED(parent)
	return columnNames.count();
}

ColumnNameView::ColumnNameView(QWidget *parent)
{
	setAcceptDrops(true);
	setDragEnabled(true);
}

void ColumnNameView::mousePressEvent(QMouseEvent *press)
{
	QModelIndex atClick = indexAt(press->pos());
	if (!atClick.isValid())
		return;

	QRect indexRect = visualRect(atClick);
	QPixmap pix(indexRect.width(), indexRect.height());
	pix.fill(QColor(0,0,0,0));
	render(&pix, QPoint(0, 0),QRegion(indexRect));

	QDrag *drag = new QDrag(this);
	QMimeData *mimeData = new QMimeData;
	mimeData->setText(atClick.data().toString());
	model()->removeRow(atClick.row());
	drag->setPixmap(pix);
	drag->setMimeData(mimeData);
	drag->exec();

}

void ColumnNameView::dragLeaveEvent(QDragLeaveEvent *leave)
{
}

void ColumnNameView::dragEnterEvent(QDragEnterEvent *event)
{
	event->acceptProposedAction();
}

void ColumnNameView::dragMoveEvent(QDragMoveEvent *event)
{
	event->acceptProposedAction();
}

void ColumnNameView::dropEvent(QDropEvent *event)
{
	const QMimeData *mimeData = event->mimeData();
	if (mimeData->hasText()) {
		model()->insertRow(model()->rowCount());
		model()->setData(model()->index(model()->rowCount()-1, 0), QVariant(mimeData->text()));
	}
}

ColumnDropCSVView::ColumnDropCSVView(QWidget *parent)
{

}

void ColumnDropCSVView::dragLeaveEvent(QDragLeaveEvent *leave)
{

}

void ColumnDropCSVView::dragEnterEvent(QDragEnterEvent *event)
{

}

void ColumnDropCSVView::dragMoveEvent(QDragMoveEvent *event)
{

}

void ColumnDropCSVView::dropEvent(QDropEvent *event)
{

}

ColumnNameResult::ColumnNameResult(QObject *parent)
{

}

bool ColumnNameResult::setData(const QModelIndex &index, const QVariant &value, int role)
{

}

QVariant ColumnNameResult::data(const QModelIndex &index, int role) const
{

}

int ColumnNameResult::rowCount(const QModelIndex &parent) const
{

}

int ColumnNameResult::columnCount(const QModelIndex &parent) const
{

}

void ColumnNameResult::setColumnValues(QList<QStringList> columns)
{

}

DiveLogImportDialog::DiveLogImportDialog(QStringList fn, QWidget *parent) : QDialog(parent),
	selector(true),
	ui(new Ui::DiveLogImportDialog)
{
	ui->setupUi(this);
	fileNames = fn;
	column = 0;

	/* Add indexes of XSLTs requiring special handling to the list */
	specialCSV << 3;
	specialCSV << 5;

	for (int i = 0; !CSVApps[i].name.isNull(); ++i)
		ui->knownImports->addItem(CSVApps[i].name);

	ui->CSVSeparator->addItems( QStringList() << tr("Separator") << tr("Tab") << ";" << ",");
	ui->knownImports->setCurrentIndex(1);

	ColumnNameProvider *provider = new ColumnNameProvider(this);
	ui->avaliableColumns->setModel(provider);

	ColumnNameResult *result = new ColumnNameResult(this);
	ui->tableView->setModel(result);

	loadFileContents();

	/* manually import CSV file */
	QShortcut *close = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this);
	connect(close, SIGNAL(activated()), this, SLOT(close()));
	QShortcut *quit = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this);
	connect(quit, SIGNAL(activated()), parent, SLOT(close()));
}

DiveLogImportDialog::~DiveLogImportDialog()
{
	delete ui;
}

void DiveLogImportDialog::loadFileContents() {
	QFile f(fileNames.first());

}

#define VALUE_IF_CHECKED(x) (ui->x->isEnabled() ? ui->x->value() - 1 : -1)
void DiveLogImportDialog::on_buttonBox_accepted()
{
	/*
	for (int i = 0; i < fileNames.size(); ++i) {
		if (ui->knownImports->currentText() == QString("Seabear CSV")) {
			parse_seabear_csv_file(fileNames[i].toUtf8().data(), ui->CSVTime->value() - 1,
			       ui->CSVDepth->value() - 1, VALUE_IF_CHECKED(CSVTemperature),
				       VALUE_IF_CHECKED(CSVpo2),
				       VALUE_IF_CHECKED(CSVcns),
				       VALUE_IF_CHECKED(CSVndl),
				       VALUE_IF_CHECKED(CSVtts),
				       VALUE_IF_CHECKED(CSVstopdepth),
				       VALUE_IF_CHECKED(CSVpressure),
				       ui->CSVSeparator->currentIndex(),
				       specialCSV.contains(ui->knownImports->currentIndex()) ? CSVApps[ui->knownImports->currentIndex()].name.toUtf8().data() : "csv",
				       ui->CSVUnits->currentIndex());

				// Seabear CSV stores NDL and TTS in Minutes, not seconds
				struct dive *dive = dive_table.dives[dive_table.nr - 1];
				for(int s_nr = 0 ; s_nr <= dive->dc.samples ; s_nr++) {
					struct sample *sample = dive->dc.sample + s_nr;
					sample->ndl.seconds *= 60;
					sample->tts.seconds *= 60;
				}
			} else
				parse_csv_file(fileNames[i].toUtf8().data(), ui->CSVTime->value() - 1,
						ui->CSVDepth->value() - 1, VALUE_IF_CHECKED(CSVTemperature),
						VALUE_IF_CHECKED(CSVpo2),
						VALUE_IF_CHECKED(CSVcns),
						VALUE_IF_CHECKED(CSVndl),
						VALUE_IF_CHECKED(CSVtts),
						VALUE_IF_CHECKED(CSVstopdepth),
						VALUE_IF_CHECKED(CSVpressure),
						ui->CSVSeparator->currentIndex(),
						specialCSV.contains(ui->knownImports->currentIndex()) ? CSVApps[ui->knownImports->currentIndex()].name.toUtf8().data() : "csv",
						ui->CSVUnits->currentIndex());
		}
	} else {
		for (int i = 0; i < fileNames.size(); ++i) {
			parse_manual_file(fileNames[i].toUtf8().data(),
					  ui->ManualSeparator->currentIndex(),
					  ui->Units->currentIndex(),
					  ui->DateFormat->currentIndex(),
					  ui->DurationFormat->currentIndex(),
					  VALUE_IF_CHECKED(DiveNumber),
					  VALUE_IF_CHECKED(Date), VALUE_IF_CHECKED(Time),
					  VALUE_IF_CHECKED(Duration), VALUE_IF_CHECKED(Location),
					  VALUE_IF_CHECKED(Gps), VALUE_IF_CHECKED(MaxDepth),
					  VALUE_IF_CHECKED(MeanDepth), VALUE_IF_CHECKED(Buddy),
					  VALUE_IF_CHECKED(Notes), VALUE_IF_CHECKED(Weight),
					  VALUE_IF_CHECKED(Tags),
					  VALUE_IF_CHECKED(CylinderSize), VALUE_IF_CHECKED(StartPressure),
					  VALUE_IF_CHECKED(EndPressure), VALUE_IF_CHECKED(O2),
					  VALUE_IF_CHECKED(He), VALUE_IF_CHECKED(AirTemp),
					  VALUE_IF_CHECKED(WaterTemp));
		}
	}
*/
	process_dives(true, false);

	MainWindow::instance()->refreshDisplay();
}

#define SET_VALUE_AND_CHECKBOX(CSV, BOX, VAL) ({\
		ui->CSV->blockSignals(true);\
		ui->CSV->setValue(VAL);\
		ui->CSV->setEnabled(VAL >= 0);\
		ui->BOX->setChecked(VAL >= 0);\
		ui->CSV->blockSignals(false); })

void DiveLogImportDialog::on_knownImports_currentIndexChanged(int index)
{
	if (index == 0)
		return;

}

void DiveLogImportDialog::unknownImports()
{
	if (!specialCSV.contains(ui->knownImports->currentIndex()))
		ui->knownImports->setCurrentIndex(0);
}