#include "nmWxMeasureDlg.h"

#include <QVBoxLayout>
#include <QHeaderView>
#include <QPushButton>
#include <QLabel>
#include <QComboBox>
#include <limits>

#include "nmDataAnalyzeManager.h"
#include "nmGUIComponentLineEdit.h"
#include "nmDataWellBase.h"

Q_DECLARE_METATYPE(double *)
Q_DECLARE_METATYPE(QString *)

nmWxMeasureDlg::nmWxMeasureDlg(QWidget* parent)
    : iDlgBase(parent),
      m_pMainLayout(NULL),
      m_pFitStartButton(NULL),
      m_pFitEndButton(NULL),
      m_pLength(NULL),
      m_pData(NULL),
      m_pLengthCom(NULL)
{

	this->initUI();
	this->resize(400, 150);
	this->setWindowTitle(tr("Measure"));
    m_pFitStartButton->setEnabled(false);
    m_pFitEndButton->setEnabled(false);
}

void nmWxMeasureDlg::initUI()
{
    m_pMainLayout = new QVBoxLayout;
    this->setLayout(m_pMainLayout);
	// 构建组件
	this->initPara();
	this->initComponents();

	// 按钮部分
    m_pFitStartButton = new QPushButton(tr("Fit start to nearest well"));
    m_pFitEndButton = new QPushButton(tr("Fit end to nearest well"));

	QString qss = "QPushButton:disabled { color: #888888; }";
    m_pFitStartButton->setStyleSheet(qss);
    m_pFitEndButton->setStyleSheet(qss);

    connect(m_pFitStartButton, SIGNAL(clicked()), this, SLOT(onFitStartClicked()));
    connect(m_pFitEndButton, SIGNAL(clicked()), this, SLOT(onFitEndClicked()));

	// 底部按钮
	QHBoxLayout *bottomLayout = new QHBoxLayout();
	bottomLayout->addStretch(1);
	QPushButton *closeButton = new QPushButton(tr("Close"));
	connect(closeButton, SIGNAL(clicked()), this, SLOT(onCloseClicked()));
	bottomLayout->addWidget(closeButton);

	// 将所有部件添加到主布局
    m_pMainLayout->addSpacing(10);
    m_pMainLayout->addSpacing(10);
    m_pMainLayout->addWidget(m_pFitStartButton);
    m_pMainLayout->addWidget(m_pFitEndButton);
    m_pMainLayout->addStretch(1);
    m_pMainLayout->addLayout(bottomLayout);

	setWindowFlags(windowFlags() | Qt::WindowStaysOnTopHint);
}

void nmWxMeasureDlg::initPara() {

    m_pData = nmDataAnalyzeManager::getCurrentInstance()->getMeasureData();
    m_pData->getLength().setName(tr("Length :"));
    m_vecWellList = nmDataAnalyzeManager::getCurrentInstance()->getWellDataList();
}

void nmWxMeasureDlg::initComponents() {

    m_pLengthCom = new nmGUIComponentLineEdit(&m_pData->getLength(), false);
    m_pMainLayout->addWidget(m_pLengthCom);
}

void nmWxMeasureDlg::onFitStartClicked()
{
    m_pFitStartButton->setEnabled(false);

	// 先取出当前点
    QPointF current = m_pData->getCurrentPoint();
	// 判断 current 是否为 (0,0)
	if (qFuzzyCompare(current.x(), 0.0) && qFuzzyCompare(current.y(), 0.0)) {
        QPointF ref = m_pData->getStartPoint();

		double minDist = std::numeric_limits<double>::max();
		QPointF nearest;
        for (int i = 0; i < m_vecWellList.size(); ++i) {
            nmDataWellBase* pWell = m_vecWellList[i];
			double x = pWell->getX().getValue().toDouble();
			double y = pWell->getY().getValue().toDouble();
			QPointF pt(x, y);
			double dist = QLineF(ref, pt).length();
			if (dist < minDist) {
				minDist = dist;
				nearest = pt;
			}
		}
        m_pData->setStartPoint(nearest);

		// 重新计算长度
        QPointF endPt = m_pData->getEndPoint();
		double newLen = QLineF(nearest, endPt).length();
        nmDataAttribute lenAttr = m_pData->getLength();
		lenAttr.setValue(newLen);
        m_pData->setLength(lenAttr);
	}
	else {

		QPointF startPt = current;

		// 找 nearest well
		double minDist = std::numeric_limits<double>::max();
		QPointF nearest;
        for (int i = 0; i < m_vecWellList.size(); ++i) {
            nmDataWellBase* pWell = m_vecWellList[i];
			double x = pWell->getX().getValue().toDouble();
			double y = pWell->getY().getValue().toDouble();
			QPointF pt(x, y);
			double dist = QLineF(startPt, pt).length();
			if (dist < minDist) {
				minDist = dist;
				nearest = pt;
			}
		}
		// 更新起点和终点
        m_pData->setStartPoint(startPt);
        m_pData->setEndPoint(nearest);

		// 重新计算长度
		double newLen = QLineF(startPt, nearest).length();
        nmDataAttribute lenAttr = m_pData->getLength();
		lenAttr.setValue(newLen);
        m_pData->setLength(lenAttr);
	}
    m_pData->setCurrentPoint(QPointF(0, 0));
	// 刷新界面显示
	updateDisplay();
}

void nmWxMeasureDlg::onFitEndClicked()
{
    m_pFitEndButton->setEnabled(false);

	// 先取出当前点
    QPointF current = m_pData->getCurrentPoint();
	// 判断 current 是否为 (0,0)
	if (qFuzzyCompare(current.x(), 0.0) && qFuzzyCompare(current.y(), 0.0)) {

        QPointF ref = m_pData->getEndPoint();

		double minDist = std::numeric_limits<double>::max();
		QPointF nearest;
        for (int i = 0; i < m_vecWellList.size(); ++i) {
            nmDataWellBase* pWell = m_vecWellList[i];
			double x = pWell->getX().getValue().toDouble();
			double y = pWell->getY().getValue().toDouble();
			QPointF pt(x, y);
			double dist = QLineF(ref, pt).length();
			if (dist < minDist) {
				minDist = dist;
				nearest = pt;
			}
		}
        m_pData->setEndPoint(nearest);

		// 重新计算长度
        QPointF startPt = m_pData->getStartPoint();
		double newLen = QLineF(startPt, nearest).length();
        nmDataAttribute lenAttr = m_pData->getLength();
		lenAttr.setValue(newLen);
        m_pData->setLength(lenAttr);
	}
	else {

		QPointF startPt = current;

		// 找 nearest well
		double minDist = std::numeric_limits<double>::max();
		QPointF nearest;
        for (int i = 0; i < m_vecWellList.size(); ++i) {
            nmDataWellBase* pWell = m_vecWellList[i];
			double x = pWell->getX().getValue().toDouble();
			double y = pWell->getY().getValue().toDouble();
			QPointF pt(x, y);
			double dist = QLineF(startPt, pt).length();
			if (dist < minDist) {
				minDist = dist;
				nearest = pt;
			}
		}
		// 更新起点和终点
        m_pData->setStartPoint(startPt);
        m_pData->setEndPoint(nearest);

		// 重新计算长度
		double newLen = QLineF(startPt, nearest).length();
        nmDataAttribute lenAttr = m_pData->getLength();
		lenAttr.setValue(newLen);
        m_pData->setLength(lenAttr);
	}
    m_pData->setCurrentPoint(QPointF(0, 0));
	// 刷新界面显示
	updateDisplay();
}

void nmWxMeasureDlg::updateDisplay() {
	m_pLengthCom->updateValueFromOrigin();
}

void nmWxMeasureDlg::closeEvent(QCloseEvent* event)
{
	emit needDeleteMeasureObj();
	iDlgBase::closeEvent(event);
}

void nmWxMeasureDlg::onCloseClicked()
{
	emit needDeleteMeasureObj();
	accept();
}

void nmWxMeasureDlg::resetButtons()
{
    m_pFitStartButton->setEnabled(true);
    m_pFitEndButton  ->setEnabled(true);
}