#include "util.h"
#include "CsvWriter.h"
#include <QApplication>
#include <QTextStream>
#include <QClipboard>
#include <sstream>
#include <stdexcept>

// Supported range from microseconds to seconds
// min:sec to hours::min::sec
QString msfloatToHumanReadableString(float ms)
{
	QString unit;
	float val;
	int deci = 2;
	if (ms < 1.0f) {
		val = ms * 1000.f;
		//result = QString::asprintf("%0.3f", ms * 1000.0f);
		unit = u8"μs";
	}
	else if (ms >= 1000.0) {
		val = ms / 1000.0f;
		unit = "s";
		if (val >= 60.0) {
			int secs = val;
			int min = secs / 60.0;
			secs -= min * 60;
			if (min >= 60) {
				int hour = min / 60;
				min -= hour * 60;
				return QString::asprintf("%d:%02d:%02d", hour, min, secs);
			}
			else {
				return QString::asprintf("%02d:%02d", min, secs);
			}
		}
	}
	else {
		val = ms;
		unit = "ms";
	}

//		if (val >= 1000.f) {
//			deci = 0;
//		}
//		else
	if (val >= 100.f) {
		deci = 0;
	}
	else if (val >= 10.f) {
		deci = 1;
	}
	QString result = QString::asprintf("%0.*f", deci, val);
	return result + unit;
}

void exportTable(const QTableView *view, QTextStream &out)
{
	auto model = view->model();
	if (model) {
		CsvWriter csv(&out);
		csv.setSeperator('\t');
		csv.setQuote('"');

		auto cols = model->columnCount();
		auto rows = model->rowCount();
		for (auto row = 0; row < rows; ++row) {
			for (int col = 0; col < cols; ++col) {
				auto idx = model->index(row, col);
				auto display_text = idx.data(Qt::DisplayRole).toString();
				csv.writeField(display_text);
			}
			csv.nextRow();
		}
		out.flush();
	}
}

void copySelectionToClipboard(const QTableView *view)
{
	//QAbstractItemModel * model = resultModel; //view->model();
	QItemSelectionModel * selection = view->selectionModel();

	QModelIndexList selectedIndexes = selection->selectedIndexes();

	if (selectedIndexes.count() > 0) {
		QString clipboard_string;
		QTextStream out(&clipboard_string, QIODevice::WriteOnly);
		CsvWriter csv(&out);
		csv.setSeperator('\t');
		csv.setQuote('"');

		int previous_row = selectedIndexes[0].row();
	//		for (int i = 0; i < selectedIndexes.count(); ++i) {
	//			QModelIndex current = selectedIndexes[i];
		for (auto current : selectedIndexes) {
			if (current.row() > previous_row) {
				csv.nextRow();
				previous_row = current.row();
			}
			QString display_text = current.data(Qt::DisplayRole).toString();
			csv.writeField(display_text);
		}
		out.flush();
		QApplication::clipboard()->setText(clipboard_string);
	}
}

QString ConvertToMultiLineCString(const QString &in)
{
	// We need to atleast escape " and \ and also any multi byte utf8 char

	QString out;
	out.append('"');
	QByteArray ba = in.toUtf8();
	for (auto c : ba) {
		if (c == '\\') {
			out.append("\\\\");
		}
		else if (c == '"') {
			out.append("\\\"");
		}
		else if (uchar(c) > 127) {
			out.append(QString("\\x%1").arg(uchar(c), 2, 16, QChar('0')));
		}
		else if (c == '\n') {
			// at end of line we add a space and a new line in the string then we put in the end quote go to the next line and put the open quote
			out.append(" \\n\"\n\"");
		}
		else {
			out.append(c);
		}
	}
	out.append('"');
	return out;
}


QString ConvertToMultiLineRawCppString(const QString &in)
{
    const QString delim = "__SQL__";
    
    QString out;
    out.append("R\"" + delim + "(\n");
    out.append(in.trimmed());
    out.append("\n)" + delim + "\"");
    return out;
}