#include "qbigorderviewer.h"
#include "qbigordermanager.h"
#include "qhistoryorderdialog.h"
#include <QHeaderView>
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QLabel>
#include <QPainter>
#include <QFileDialog>
#include <QTextStream>
#include <QLineEdit>
#include <QComboBox>
#include <QTableView>
#include <QPushButton>
#include <QWidget>
#include <QCheckBox>

//// ==================== OrderTypeDelegate ====================
//OrderTypeDelegate::OrderTypeDelegate(QObject *parent)
//    : QStyledItemDelegate(parent)
//{
//}
//
//void OrderTypeDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
//                              const QModelIndex &index) const
//{
//    if (!index.isValid()) return;
//
//    QString type = index.data(Qt::DisplayRole).toString();
//    if (type == "买入") {
//        painter->fillRect(option.rect, QColor(255, 230, 230)); // 买入订单浅红背景
//    } else if (type == "卖出") {
//        painter->fillRect(option.rect, QColor(230, 255, 230)); // 卖出订单浅绿背景
//    }
//    QStyledItemDelegate::paint(painter, option, index);
//}

// ==================== QBigOrderViewer ====================
QBigOrderViewer::QBigOrderViewer(QWidget *parent)
	: QWidget(parent),
	m_model(new QStandardItemModel(0, 7, this)),
	m_proxyModel(new QSortFilterProxyModel(this)),
	m_typeDelegate(new OrderTypeDelegate(this))
{
	initUI();
	initConnections();

	QBigOrderManager* manager = QBigOrderManager::instance();
	connect(manager, &QBigOrderManager::bigOrderAdded,
		this, &QBigOrderViewer::onBigOrderAdded);

	connect(manager, &QBigOrderManager::saveOverRefreshView,
		this, [this]() {
			m_model->removeRows(0, m_model->rowCount());
		}, Qt::QueuedConnection  // 必须使用跨线程连接
	);
}

QBigOrderViewer::~QBigOrderViewer()
{
    delete m_model;
    delete m_proxyModel;
    delete m_typeDelegate;
}

void QBigOrderViewer::initUI()
{
    QVBoxLayout *mainLayout = new QVBoxLayout(this);

    // 过滤控件区域
    QHBoxLayout *filterLayout = new QHBoxLayout();

	QCheckBox *cboAutoSave = new QCheckBox("自动保存数据");
	cboAutoSave->setChecked(true);
	filterLayout->addWidget(cboAutoSave);

    filterLayout->addWidget(new QLabel("股票代码:"));
    m_stockCodeFilter = new QLineEdit();
    m_stockCodeFilter->setPlaceholderText("支持模糊搜索");
    filterLayout->addWidget(m_stockCodeFilter);

    filterLayout->addWidget(new QLabel("订单类型:"));
    m_orderTypeFilter = new QComboBox();
    m_orderTypeFilter->addItem("全部", "");
    m_orderTypeFilter->addItem("买入", "BID");
    m_orderTypeFilter->addItem("卖出", "ASK");
    filterLayout->addWidget(m_orderTypeFilter);

    filterLayout->addStretch();
	// 添加历史查询按钮
	QPushButton *historyButton = new QPushButton("历史查询");
	filterLayout->addWidget(historyButton);

    m_exportButton = new QPushButton("导出数据");
    filterLayout->addWidget(m_exportButton);
    mainLayout->addLayout(filterLayout);

    // 表格视图配置
    m_tableView = new QTableView();
    m_proxyModel->setSourceModel(m_model);
    m_tableView->setModel(m_proxyModel);
	m_tableView->setEditTriggers(QAbstractItemView::NoEditTriggers);

	// 设置表头（股票代码、名称、类型、数量、价格、订单数、时间）
	m_model->setHorizontalHeaderLabels(
		QStringList() 
		<< "股票代码"
		<< "股票名称" 
		<< "订单类型"
		<< "股票数量" 
		<< "股票价格" 
		<< "订单档位"
		<< "时间"
	);

    // 表格属性
    m_tableView->setItemDelegateForColumn(2, m_typeDelegate);
    m_tableView->setSelectionBehavior(QAbstractItemView::SelectRows);
    m_tableView->setSortingEnabled(true);
   // m_tableView->horizontalHeader()->setSectionResizeMode(QHeaderView::Interactive);
	m_tableView->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);

    // 默认按时间列（第6列，索引5）升序排序
    const int timeColumnIndex = 6;
    m_proxyModel->sort(timeColumnIndex, Qt::AscendingOrder);

    mainLayout->addWidget(m_tableView);

	// 连接历史查询按钮
	connect(historyButton, &QPushButton::clicked, this, [this] {
		QHistoryOrderDialog *dialog = new QHistoryOrderDialog(this);
		dialog->setAttribute(Qt::WA_DeleteOnClose);
		dialog->show();
	});

	connect(cboAutoSave, &QCheckBox::stateChanged, [](int state) {
		if (state == Qt::Checked) {
			QBigOrderManager::instance()->setAutoSave(true);
			// 复选框被选中
		}
		else if (state == Qt::Unchecked) {
			QBigOrderManager::instance()->setAutoSave(false);
			// 复选框被取消选中
		}
	});
}

void QBigOrderViewer::initConnections()
{
    connect(m_stockCodeFilter, &QLineEdit::textChanged,
            this, &QBigOrderViewer::onFilterChanged);
    connect(m_orderTypeFilter, QOverload<int>::of(&QComboBox::currentIndexChanged),
            this, &QBigOrderViewer::onFilterChanged);
    connect(m_exportButton, &QPushButton::clicked,
            this, &QBigOrderViewer::onExportClicked);
    // connect(m_tableView->horizontalHeader(), &QHeaderView::sectionClicked,
    //         m_proxyModel, &QSortFilterProxyModel::sort);
    // // 表头点击排序（使用lambda适配参数）
    connect(m_tableView->horizontalHeader(), &QHeaderView::sectionClicked,
            [this](int logicalIndex) {
                Qt::SortOrder currentOrder = m_proxyModel->sortOrder();
                m_proxyModel->sort(logicalIndex,
                                   currentOrder == Qt::AscendingOrder
                                       ? Qt::AscendingOrder
                                       : Qt::DescendingOrder);
            });

	QObject::connect(m_tableView->selectionModel(), &QItemSelectionModel::selectionChanged,

		[&](const QItemSelection &selected, const QItemSelection &deselected) {

		Q_UNUSED(deselected); // 未使用deselected，避免警告

							  // 获取当前选中的所有行
		QModelIndexList selectedIndexes = m_tableView->selectionModel()->selectedIndexes();

		// 如果没有选中任何项
		if (selectedIndexes.isEmpty()) {
			return;
		}
		emit sendStockCodeToMainForm(m_proxyModel->index(selectedIndexes.at(0).row(), selectedIndexes.at(0).column()).data().toString());
	});
}

void QBigOrderViewer::updateView()
{
    m_model->removeRows(0, m_model->rowCount());
    for (const auto& order : m_currentOrders) {
        QList<QStandardItem*> rowItems;
        rowItems << new QStandardItem(order->code);
        rowItems << new QStandardItem(order->name);
		int nType = order->nBigOrderType;
		if(nType)
			rowItems << new QStandardItem("多单");
		else
			rowItems << new QStandardItem("空单");
        rowItems << new QStandardItem(QString::number(std::fabs(order->volume/1000)) + "K");
		rowItems << new QStandardItem(QString::number(order->price, 'f', 2));
		rowItems << new QStandardItem(QString::number(order->level));
		QString str = order->svrRecvTime.mid(11);
		if (str == nullptr)
		{
			QDateTime dateTime = QDateTime::currentDateTime();
			str = dateTime.toString("hh:mm:ss");
		}
		rowItems << new QStandardItem(str);
        m_model->appendRow(rowItems);
    }
}

void QBigOrderViewer::applyFilters()
{
    QString stockCode = m_stockCodeFilter->text().trimmed();
    QString orderType = m_orderTypeFilter->currentData().toString();

    m_currentOrders.clear();
    for (const auto& order : m_allOrders) {
        bool match = true;
        if (!stockCode.isEmpty() && !order->code.contains(stockCode, Qt::CaseInsensitive)) {
            match = false;
        }
        if (!orderType.isEmpty() && order->nBigOrderType != orderType) {
            match = false;
        }
        if (match) m_currentOrders.append(order);
    }
}

void QBigOrderViewer::onBigOrderAdded(const BigOrderInfo &order)
{
	auto newOrder = QSharedPointer<BigOrderInfo>::create(order);
	m_allOrders.append(newOrder);
	if (matchesFilter(newOrder)) {
		m_currentOrders.append(newOrder);

		// 高效插入单行
		int row = m_model->rowCount();
		m_model->insertRow(row);
		setRowData(row, newOrder);
	}
}

// 新增辅助函数
void QBigOrderViewer::setRowData(int row, QSharedPointer<BigOrderInfo> order)
{
	m_model->setData(m_model->index(row, 0), order->code);
	m_model->setData(m_model->index(row, 1), order->name);
	m_model->setData(m_model->index(row, 2),
		order->nBigOrderType == 0 ? "卖出" : "买入");
	m_model->setData(m_model->index(row, 3),
		QString::number(std::fabs(order->volume / 1000)) + "K");
	m_model->setData(m_model->index(row, 4),
		QString::number(order->price, 'f', 2));
	m_model->setData(m_model->index(row, 5),
		QString::number(order->level));
	QString str = order->svrRecvTime.mid(11);
	if (str == nullptr)
	{
		QDateTime dateTime = QDateTime::currentDateTime();
		str = dateTime.toString("hh:mm:ss");
	}
	m_model->setData(m_model->index(row, 6), str);
}

bool QBigOrderViewer::matchesFilter(QSharedPointer<BigOrderInfo> order)
{
	QString stockCode = m_stockCodeFilter->text().trimmed();
	QString orderType = m_orderTypeFilter->currentData().toString();

	return (stockCode.isEmpty() || order->code.contains(stockCode, Qt::CaseInsensitive))
		&& (orderType.isEmpty() || order->nBigOrderType == orderType);
}


void QBigOrderViewer::onFilterChanged()
{
    applyFilters();
    updateView();
}

void QBigOrderViewer::onExportClicked()
{
    QString fileName = QFileDialog::getSaveFileName(this, "导出CSV", "", "CSV文件 (*.csv)");
    if (fileName.isEmpty()) return;

    QFile file(fileName);
    if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) return;

    QTextStream out(&file);
	out.setCodec("GBK");

    // 写入表头
    for (int col = 0; col < m_model->columnCount(); ++col) {
        out << m_model->headerData(col, Qt::Horizontal).toString();
        if (col < m_model->columnCount() - 1) out << ",";
    }
    out << "\n";

    // 写入数据
    for (int row = 0; row < m_proxyModel->rowCount(); ++row) {
        for (int col = 0; col < m_proxyModel->columnCount(); ++col) {
            out << m_proxyModel->index(row, col).data().toString();
            if (col < m_proxyModel->columnCount() - 1) out << ",";
        }
        out << "\n";
    }
    file.close();
}