#include "nmWxWellboreStorageCalculatorVolume.h"

#include <QTableWidget>
#include <QPushButton>
#include <QLabel>
#include <QLineEdit>
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QHeaderView>
#include <QCoreApplication>
#include <QComboBox>
#include <cmath>

nmWxWellboreStorageCalculatorVolume::nmWxWellboreStorageCalculatorVolume(QWidget *parent) : iDlgBase(parent)
{
  this->initUI();          // 初始化用户界面
  this->initConnections(); // 连接信号和槽
}

nmWxWellboreStorageCalculatorVolume::~nmWxWellboreStorageCalculatorVolume()
{
}

void nmWxWellboreStorageCalculatorVolume::initUI()
{
  setWindowTitle(tr("Tested chamber volume"));
  setFixedSize(450, 350);

  // 1. 主布局
  QVBoxLayout* mainLayout = new QVBoxLayout(this);

  // 2. 表格和右侧按钮布局
  QHBoxLayout* tableAndButtonsLayout = new QHBoxLayout;

  m_pTableWidget = new QTableWidget(this);
  m_pTableWidget->setColumnCount(2);
  m_pTableWidget->setHorizontalHeaderLabels(QStringList() << tr("Height") << tr("I.D."));

  // 设置一个自定义表头，其中第一行是单位
  m_pTableWidget->insertRow(0);

  // 为第一行的垂直表头（行号）创建一个 QTableWidgetItem 并设置为空文本
  m_pTableWidget->setVerticalHeaderItem(0, new QTableWidgetItem());
  m_pTableWidget->verticalHeaderItem(0)->setText("");

  m_pHeightUnitCombo = new QComboBox;
  m_pIDUnitCombo = new QComboBox;
  m_pHeightUnitCombo->addItems(QStringList() << "m" ); // << "cm" << "mm" << "in" << "0.1 in" << "ft" << "mile");
  m_pIDUnitCombo->addItems(QStringList() << "m" ); // << "cm" << "mm" << "in" << "0.1 in" << "ft" << "mile");

  // 设置下拉框样式表，去除边框和箭头
  QString comboStyle = "QComboBox {"
                       "border: 0px solid transparent;"
                       "background-color: transparent;"
                       "}"
                       "QComboBox::drop-down {"
                       "border: 0px;"
                       "background-color: transparent;"
                       "}"
                       "QComboBox::down-arrow {"
                       "image: url(none);"
                       "}"
                       "QComboBox:!editable, QComboBox::drop-down:editable {"
                       "background-color: transparent;"
                       "}";

  m_pHeightUnitCombo->setStyleSheet(comboStyle);
  m_pIDUnitCombo->setStyleSheet(comboStyle);

  // 将下拉框放置在表格的第一行，即单位行
  m_pTableWidget->setCellWidget(0, 0, m_pHeightUnitCombo);
  m_pTableWidget->setCellWidget(0, 1, m_pIDUnitCombo);

  // 设置垂直表头，用于显示行号

  QHeaderView* verticalHeader = m_pTableWidget->verticalHeader();
  verticalHeader->setFixedWidth(40);
  verticalHeader->setResizeMode(QHeaderView::ResizeToContents);
  verticalHeader->show();
  m_pTableWidget->horizontalHeader()->setResizeMode(QHeaderView::Stretch);

  m_pAddButton = new QPushButton(tr("Add"));
  m_pInsertButton = new QPushButton(tr("Insert"));
  m_pDeleteButton = new QPushButton(tr("Delete"));

  QVBoxLayout* sideButtonsLayout = new QVBoxLayout;
  sideButtonsLayout->addWidget(m_pAddButton);
  sideButtonsLayout->addWidget(m_pInsertButton);
  sideButtonsLayout->addWidget(m_pDeleteButton);
  sideButtonsLayout->addStretch();

  tableAndButtonsLayout->addWidget(m_pTableWidget);
  tableAndButtonsLayout->addLayout(sideButtonsLayout);

  // 3. 体积显示区域布局
  QHBoxLayout* volumeLayout = new QHBoxLayout;
  m_pVolumeLabel = new QLabel(tr("Volume:"));
  m_pVolumeEdit = new QLineEdit;
  m_pVolumeEdit->setReadOnly(true);
  m_pVolumeUnitCombo = new QComboBox;
  m_pVolumeUnitCombo->addItems(QStringList() << tr("m^3")); // << "cm³" << "ft³" << "gallon" << "L");
  m_pVolumeUnitCombo->setStyleSheet(comboStyle); // 使用相同的样式

  m_pRefreshButton = new QPushButton;
  QString iconDir = QCoreApplication::applicationDirPath().section('/', 0, -2) + "/Res/Icon/";
  m_pRefreshButton->setIcon(QIcon(iconDir + "NmWellboreStorageRefresh.png"));
  m_pRefreshButton->setIconSize(QSize(32, 32));
  m_pRefreshButton->setFixedSize(34, 34);

  volumeLayout->addWidget(m_pVolumeLabel);
  volumeLayout->addWidget(m_pVolumeEdit);
  volumeLayout->addWidget(m_pVolumeUnitCombo);
  volumeLayout->addWidget(m_pRefreshButton);
  volumeLayout->addStretch();

  // 4. 底部按钮布局
  QHBoxLayout* bottomButtonsLayout = new QHBoxLayout;
  m_pOkButton = new QPushButton(tr("OK"));
  m_pCancelButton = new QPushButton(tr("Cancel"));
  bottomButtonsLayout->addStretch();
  bottomButtonsLayout->addWidget(m_pOkButton);
  bottomButtonsLayout->addWidget(m_pCancelButton);

  mainLayout->addLayout(tableAndButtonsLayout);
  mainLayout->addSpacing(10);
  mainLayout->addLayout(volumeLayout);
  mainLayout->addSpacing(10);
  mainLayout->addLayout(bottomButtonsLayout);
}

void nmWxWellboreStorageCalculatorVolume::initConnections()
{
  connect(m_pAddButton, SIGNAL(clicked()), this, SLOT(onAddClicked()));
  connect(m_pInsertButton, SIGNAL(clicked()), this, SLOT(onInsertClicked()));
  connect(m_pDeleteButton, SIGNAL(clicked()), this, SLOT(onDeleteClicked()));
  connect(m_pRefreshButton, SIGNAL(clicked()), this, SLOT(onRefreshClicked()));
  connect(m_pOkButton, SIGNAL(clicked()), this, SLOT(accept()));
  connect(m_pCancelButton, SIGNAL(clicked()), this, SLOT(reject()));
}

void nmWxWellboreStorageCalculatorVolume::onAddClicked()
{
  int rowCount = m_pTableWidget->rowCount();
  m_pTableWidget->insertRow(rowCount);

  // 为新行设置行号。行号从1开始，所以是当前行数减去1（因为第0行是单位行）
  m_pTableWidget->setVerticalHeaderItem(rowCount, new QTableWidgetItem(QString::number(rowCount)));

  m_pTableWidget->setItem(rowCount, 0, new QTableWidgetItem("N/A"));
  m_pTableWidget->setItem(rowCount, 1, new QTableWidgetItem("N/A"));

  m_pTableWidget->scrollToBottom();
}

void nmWxWellboreStorageCalculatorVolume::onInsertClicked()
{
  int currentRow = m_pTableWidget->currentRow();
  if (currentRow <= 0) {
    return;
  }
  m_pTableWidget->insertRow(currentRow);
  m_pTableWidget->setItem(currentRow, 0, new QTableWidgetItem("N/A"));
  m_pTableWidget->setItem(currentRow, 1, new QTableWidgetItem("N/A"));

  // 插入行后，更新所有行号。行号从1开始。
  for (int i = 1; i < m_pTableWidget->rowCount(); ++i) {
    m_pTableWidget->setVerticalHeaderItem(i, new QTableWidgetItem(QString::number(i)));
  }

  m_pTableWidget->scrollToItem(m_pTableWidget->item(currentRow, 0));
}

void nmWxWellboreStorageCalculatorVolume::onDeleteClicked()
{
  int currentRow = m_pTableWidget->currentRow();
  if (currentRow > 0 && currentRow < m_pTableWidget->rowCount()) {
    m_pTableWidget->removeRow(currentRow);

    // 删除行后，重新设置行号，行号从1开始。
    for (int i = 1; i < m_pTableWidget->rowCount(); ++i) {
      m_pTableWidget->setVerticalHeaderItem(i, new QTableWidgetItem(QString::number(i)));
    }
  }
}

void nmWxWellboreStorageCalculatorVolume::onRefreshClicked()
{
  calculateVolume();
}

void nmWxWellboreStorageCalculatorVolume::calculateVolume()
{
  double totalVolume = 0.0;
  const double PI = acos(-1.0);

  // 从第二行开始遍历，跳过单位行
  for (int i = 1; i < m_pTableWidget->rowCount(); ++i) {
    QTableWidgetItem* heightItem = m_pTableWidget->item(i, 0);
    QTableWidgetItem* idItem = m_pTableWidget->item(i, 1);

    if (heightItem && idItem) {
      bool okHeight, okID;
      // 直接从表格中获取double值，不再进行单位转换
      double height = heightItem->text().toDouble(&okHeight);
      double id = idItem->text().toDouble(&okID);

      if (okHeight && okID) {
        // 直接使用获取到的值进行计算，因为默认单位就是m
        double radius = id / 2.0;
        double volumeSegment = PI * pow(radius, 2.0) * height;
        totalVolume += volumeSegment;
      }
    }
  }

  // 将计算结果显示在QLineEdit中，单位为立方米
  m_pVolumeEdit->setText(QString::number(totalVolume, 'f', 6));
}

double nmWxWellboreStorageCalculatorVolume::getCalculatedVolume() const
{
  bool ok;
  double value = m_pVolumeEdit->text().toDouble(&ok);
  if (ok && value >= 0) {
    return value;
  }
  // 如果转换失败，返回-1
  return -1;
}