#include "nmWxPointerPosDlg.h"
#include "nmGUIComponentLineEdit.h"
#include "nmDataAnalyzeManager.h"
#include "nmDataAttribute.h"

#include <QPushButton>
#include <QComboBox>
#include <QLineEdit>
#include <QGroupBox>
#include <QFormLayout>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QLabel>
#include <cmath>

nmWxPointerPosDlg::nmWxPointerPosDlg(QWidget* parent)
    : iDlgBase(parent)
{
    setWindowTitle(tr("Pointer position"));

    m_pAttrX = new nmDataAttribute();
    m_pAttrX->setName("X");
    m_pAttrX->setUnit("m");
    m_pAttrX->setListUnitSelections(QStringList() << "m" << "ft" << "cm");
    m_pAttrX->setValue(0.0);

    m_pAttrY = new nmDataAttribute();
    m_pAttrY->setName("Y");
    m_pAttrY->setUnit("m");
    m_pAttrY->setListUnitSelections(QStringList() << "m" << "ft" << "cm");
    m_pAttrY->setValue(0.0);

	m_pGeoRefData = nmDataAnalyzeManager::getCurrentInstance()->getGeoRefData();

    initUI();
	loadGeoRefDataToUI();
    this->resize(320, 400);
    this->setFixedSize(this->size());
}

void nmWxPointerPosDlg::initUI()
{
	// Local grid group
	QGroupBox* localGroup = new QGroupBox(tr("Local grid"));

	QFormLayout* localForm = new QFormLayout;
	localForm->setLabelAlignment(Qt::AlignRight | Qt::AlignVCenter);
	localForm->setVerticalSpacing(10);
	localForm->setHorizontalSpacing(15);
	localForm->setContentsMargins(8, 8, 8, 8);

	m_pX = new nmGUIComponentLineEdit(m_pAttrX, false);
	m_pY = new nmGUIComponentLineEdit(m_pAttrY, false);
	QLineEdit* leX = m_pX->findChild<QLineEdit*>();

	if(leX) {
		leX->setMinimumWidth(100);
	}

	QLineEdit* leY = m_pY->findChild<QLineEdit*>();

	if(leY) {
		leY->setMinimumWidth(100);
	}

	QWidget* xWidget = new QWidget;
	QHBoxLayout* xLay = new QHBoxLayout(xWidget);
	xLay->setContentsMargins(0, 0, 0, 0);
	xLay->addWidget(m_pX);

	QWidget* yWidget = new QWidget;
	QHBoxLayout* yLay = new QHBoxLayout(yWidget);
	yLay->setContentsMargins(0, 0, 0, 0);
	yLay->addWidget(m_pY);

	localForm->addRow(tr("X:"), xWidget);
	localForm->addRow(tr("Y:"), yWidget);

	QVBoxLayout* localWrapper = new QVBoxLayout;
	localWrapper->addStretch(1);
	localWrapper->addLayout(localForm);
	localWrapper->addStretch(1);
	localWrapper->setContentsMargins(0, 0, 0, 0);
	localGroup->setLayout(localWrapper);

	// Coordinates group
	QGroupBox* coordGroup = new QGroupBox(tr("Coordinates"));
	coordGroup->setEnabled(true);

	QFormLayout* coordForm = new QFormLayout;
	coordForm->setLabelAlignment(Qt::AlignRight | Qt::AlignVCenter);
	coordForm->setVerticalSpacing(10);
	coordForm->setHorizontalSpacing(15);
	coordForm->setContentsMargins(8, 8, 8, 8);

	m_pLonEdit = new QLineEdit;
	m_pLatEdit = new QLineEdit;
	m_pUtmZoneCombo = new QComboBox;
	m_pEastingEdit = new QLineEdit;
	m_pNorthingEdit = new QLineEdit;

	// 初始化UTM Zone下拉框选项
	QStringList bands;
	bands << "C" << "D" << "E" << "F" << "G" << "H" << "J" << "K" << "L" << "M"
		<< "N" << "P" << "Q" << "R" << "S" << "T" << "U" << "V" << "W" << "X";

	// 外层循环：Band；内层循环：Zone
	for(int i = 0; i < bands.size(); ++i) {
		QString band = bands.at(i);
		for(int zone = 1; zone <= 60; ++zone) {
			QString zoneStr = QString("%1%2").arg(zone, 2, 10, QLatin1Char('0')).arg(band);
			m_pUtmZoneCombo->addItem(zoneStr);
		}
	}

	m_pLonEdit->setEnabled(false);
	m_pLatEdit->setEnabled(false);
	m_pUtmZoneCombo->setEnabled(false);  // ComboBox禁用编辑
	m_pEastingEdit->setEnabled(false);
	m_pNorthingEdit->setEnabled(false);

	coordForm->addRow(tr("Longitude:"), m_pLonEdit);
	coordForm->addRow(tr("Latitude:"), m_pLatEdit);
	coordForm->addItem(new QSpacerItem(0, 20, QSizePolicy::Minimum, QSizePolicy::Fixed));
	coordForm->addRow(tr("UTM zone:"),  m_pUtmZoneCombo);
	coordForm->addRow(tr("Easting:"),   m_pEastingEdit);
	coordForm->addRow(tr("Northing:"),  m_pNorthingEdit);

	QVBoxLayout* coordWrapper = new QVBoxLayout;
	coordWrapper->addStretch(1);
	coordWrapper->addLayout(coordForm);
	coordWrapper->addStretch(1);
	coordWrapper->setContentsMargins(0, 0, 0, 0);
	coordGroup->setLayout(coordWrapper);

	// Bottom button
	m_pCloseButton = new QPushButton(tr("Close"));
	connect(m_pCloseButton, SIGNAL(clicked()), this, SLOT(reject()));
	QHBoxLayout* btnLay = new QHBoxLayout;
	btnLay->addStretch();
	btnLay->addWidget(m_pCloseButton);

	// 整体布局
	QVBoxLayout* mainLay = new QVBoxLayout;
	mainLay->setContentsMargins(12, 12, 12, 12);
	mainLay->setSpacing(15);
	mainLay->addWidget(localGroup);
	mainLay->addWidget(coordGroup);
	mainLay->addLayout(btnLay);
	setLayout(mainLay);
}

void nmWxPointerPosDlg::setPointerPos(double x, double y)
{
	// 更新X、Y坐标显示
	m_pX->setDisplayValue(x);
	m_pY->setDisplayValue(y);

	// 检查是否有地理参考数据
	if (!m_pGeoRefData) {
		return;  // 提前返回，避免后续无效计算
	}

	// 验证地理参考数据有效性
	QString utmZone = m_pGeoRefData->getUtmZone().getValue().toString();
	if (utmZone.isEmpty()) {
		return;  // 提前返回，避免后续无效计算
	}

	// 获取基础地理参考坐标
	double baseEasting = m_pGeoRefData->getEasting().getValue().toDouble();
	double baseNorthing = m_pGeoRefData->getNorthing().getValue().toDouble();
	double baseLongitude = m_pGeoRefData->getLongitude().getValue().toDouble();
	double baseLatitude = m_pGeoRefData->getLatitude().getValue().toDouble();

	// 计算并更新UTM坐标
	double newEasting = baseEasting + x;
	double newNorthing = baseNorthing + y;
	m_pEastingEdit->setText(QString::number(newEasting, 'f', 2));
	m_pNorthingEdit->setText(QString::number(newNorthing, 'f', 2));

	// 计算并更新经纬度坐标
	const double METERS_PER_DEGREE_LAT = 111111.0;
	const double PI = 3.14159265358979323846;

	double latitudeRadians = baseLatitude * PI / 180.0;
	double metersPerDegreeLon = METERS_PER_DEGREE_LAT * cos(latitudeRadians);

	double newLatitude = baseLatitude + (y / METERS_PER_DEGREE_LAT);
	double newLongitude = baseLongitude + (x / metersPerDegreeLon);

	// 转换为度分秒格式并更新UI
	QString latStr = formatCoordinate(newLatitude, true);
	QString lonStr = formatCoordinate(newLongitude, false);
	m_pLatEdit->setText(latStr);
	m_pLonEdit->setText(lonStr);
}

void nmWxPointerPosDlg::loadGeoRefDataToUI()
{
	if (!m_pGeoRefData) {
		m_pUtmZoneCombo->setCurrentIndex(-1);  // 设置为空选项
		return;
	}

	// 检查是否有有效的地理参考数据
	QString utmZone = m_pGeoRefData->getUtmZone().getValue().toString();
	bool hasValidData = !utmZone.isEmpty();

	if (hasValidData) {
		// 加载经纬度
		double longitude = m_pGeoRefData->getLongitude().getValue().toDouble();
		double latitude = m_pGeoRefData->getLatitude().getValue().toDouble();

		// 分别转换经度和纬度，并设置到UI
		QString lonStr = formatCoordinate(longitude, false);  // false表示经度
		QString latStr = formatCoordinate(latitude, true);    // true表示纬度

		m_pLonEdit->setText(lonStr);  // 显示转换后的经度
		m_pLatEdit->setText(latStr);  // 显示转换后的纬度

		// 加载UTM Zone
		int index = m_pUtmZoneCombo->findText(utmZone);
		if (index >= 0) {
			m_pUtmZoneCombo->setCurrentIndex(index);
		}

		// 加载UTM坐标
		double easting = m_pGeoRefData->getEasting().getValue().toDouble();
		double northing = m_pGeoRefData->getNorthing().getValue().toDouble();

		m_pEastingEdit->setText(QString::number(easting, 'f', 2));
		m_pNorthingEdit->setText(QString::number(northing, 'f', 2));
	}
}

QString nmWxPointerPosDlg::formatCoordinate(double coordinate, bool isLatitude)
{
	// 判断正负，确定方向
	bool isPositive = coordinate >= 0;
	double absCoordinate = qAbs(coordinate);

	// 提取度数
	int degrees = static_cast<int>(absCoordinate);

	// 计算分数
	double minutesFloat = (absCoordinate - degrees) * 60.0;
	int minutes = static_cast<int>(minutesFloat);

	// 计算秒数
	double seconds = (minutesFloat - minutes) * 60.0;

	// 防止浮点精度问题导致秒数≥60
	if (seconds >= 60.0) {
		seconds = 59.999;
	}

	// 确定方向字符
	QString direction;
	if (isLatitude) {
		direction = isPositive ? "N" : "S";  // 纬度
	} else {
		direction = isPositive ? "E" : "W";  // 经度
	}

	// 分步构建字符串
	QString result;
	result += QString("%1").arg(degrees, 2, 10, QChar('0'));        // 度数
	result += QString(tr("deg"));                             // 度符号
	result += QString("%1").arg(minutes, 2, 10, QChar('0'));        // 分数
	result += QString(tr("min"));                              // 分符号
	result += QString("%1").arg(static_cast<int>(seconds), 2, 10, QChar('0')); // 秒数
	result += QString(tr("sec"));                             // 秒符号
	result += direction;                                             // 方向

	return result;
}