#include "serialportmanager.h"
#include <QSerialPortInfo>
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QGroupBox>
#include <QMessageBox>
#include <QDebug>

SerialPortManager::SerialPortManager(QWidget *parent)
    : QDialog(parent), m_serial(new QSerialPort(this))
{
    setWindowTitle("串口连接设置");
    setFixedSize(450,200);

    // 连接串口信号
    connect(m_serial, &QSerialPort::readyRead, this, &SerialPortManager::handleReadyRead);
    connect(m_serial, &QSerialPort::errorOccurred, this, &SerialPortManager::handleError);

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

    // 创建单个GroupBox - 串口参数设置
    QGroupBox *settingsGroup = new QGroupBox("串口参数设置", this);
    QFormLayout *formLayout = new QFormLayout(settingsGroup);

    // 串口选择行
    m_portComboBox = new QComboBox(this);
    QPushButton *refreshButton = new QPushButton("刷新", this);
    QHBoxLayout *portComboLayout = new QHBoxLayout;
    portComboLayout->addWidget(m_portComboBox, 5);
    portComboLayout->addWidget(refreshButton, 1);
    formLayout->addRow("串口:", portComboLayout);

    // 波特率选择行
    m_baudComboBox = new QComboBox(this);
    populateBaudRates();
    formLayout->addRow("波特率:", m_baudComboBox);

    // 奇偶校验选择行
    m_parityComboBox = new QComboBox(this);
    populateParities();
    formLayout->addRow("奇偶校验:", m_parityComboBox);

    // 从站地址行
    m_stationSpinBox = new QSpinBox(this);
    m_stationSpinBox->setRange(1, 247);
    m_stationSpinBox->setValue(1);
    formLayout->addRow("从站地址:", m_stationSpinBox);

    // 添加到主布局
    mainLayout->addWidget(settingsGroup);

    // 按钮区域
    QHBoxLayout *buttonLayout = new QHBoxLayout;
    m_connectBtn = new QPushButton("连接", this);
    QPushButton *cancelButton = new QPushButton("取消", this);

    // 状态标签
    m_statusLabel = new QLabel("状态: 未连接", this);
    m_statusLabel->setStyleSheet("QLabel { color: red; }");

    buttonLayout->addWidget(m_statusLabel);
    buttonLayout->addStretch();
    buttonLayout->addWidget(m_connectBtn);
    buttonLayout->addWidget(cancelButton);

    // 添加到主布局
    mainLayout->addLayout(buttonLayout);

    // 连接信号
    connect(refreshButton, &QPushButton::clicked, this, &SerialPortManager::refreshPorts);
    connect(m_connectBtn, &QPushButton::clicked, this, &SerialPortManager::onConnectClicked);
    connect(cancelButton, &QPushButton::clicked, this, &QDialog::reject);

    // 初始刷新端口
    refreshPorts();
}

SerialPortManager::~SerialPortManager()
{
    if (m_serial->isOpen()) {
        m_serial->close();
    }
}

// 串口操作接口实现
bool SerialPortManager::isOpen() const
{
    return m_serial->isOpen();
}

void SerialPortManager::openSerialPort()
{
    if (!m_serial->isOpen()) {
        onConnectClicked();
    }
}

void SerialPortManager::closeSerialPort()
{
    if (m_serial->isOpen()) {
        m_serial->close();
        updateConnectionState(false);
    }
}

QByteArray SerialPortManager::readAll()
{
    return m_serial->readAll();
}

void SerialPortManager::write(const QByteArray &data)
{
    if (m_serial->isOpen()) {
        m_serial->write(data);
    }
}

// 连接按钮槽函数
void SerialPortManager::onConnectClicked()
{
    if (m_serial->isOpen()) {
        // 如果已连接，则断开
        m_serial->close();
        updateConnectionState(false);
        return;
    }

    // 获取配置
    QString portName = m_portComboBox->currentData().toString();
    int baudRate = m_baudComboBox->currentData().toInt();
    QSerialPort::Parity parity = static_cast<QSerialPort::Parity>(m_parityComboBox->currentData().toInt());

    if (portName.isEmpty()) {
        QMessageBox::warning(this, "错误", "请选择有效的串口");
        return;
    }

    // 配置串口
    m_serial->setPortName(portName);
    m_serial->setBaudRate(baudRate);
    m_serial->setDataBits(QSerialPort::Data8);
    m_serial->setParity(parity);
    m_serial->setStopBits(QSerialPort::OneStop);

    if (m_serial->open(QIODevice::ReadWrite))
    {
        updateConnectionState(true);
        QString logMsg = QString("串口连接成功: %1, %2 bps, 从站地址: %3")
                        .arg(portName)
                        .arg(baudRate)
                        .arg(m_stationSpinBox->value());
        emit logMessage(logMsg); // 发送统一日志
    }
    else
    {
        QString errorMsg = QString("串口连接失败: %1").arg(m_serial->errorString());
        emit logMessage(errorMsg); // 发送统一日志
    }

}

// 更新连接状态
void SerialPortManager::updateConnectionState(bool connected)
{
    if (connected) {
        m_connectBtn->setText("断开");
        m_statusLabel->setText("状态: 已连接");
        m_statusLabel->setStyleSheet("QLabel { color: green; }");
    } else {
        m_connectBtn->setText("连接");
        m_statusLabel->setText("状态: 未连接");
        m_statusLabel->setStyleSheet("QLabel { color: red; }");
    }
}

// 数据接收处理
void SerialPortManager::handleReadyRead()
{
    QByteArray data = m_serial->readAll();
    if (!data.isEmpty()) {
        QString hexString = data.toHex().toUpper(); // 转换为大写的十六进制
        emit logMessage("接收: " + hexString); // 发送统一日志
    }

}

// 错误处理
void SerialPortManager::handleError(QSerialPort::SerialPortError error)
{
    if (error != QSerialPort::NoError)
    {
        QString errorMsg = QString("串口错误: %1").arg(m_serial->errorString());
        emit logMessage(errorMsg); // 发送统一日志
    }
}

void SerialPortManager::populateBaudRates()
{
    m_baudComboBox->clear();
    m_baudComboBox->addItem("4800", QSerialPort::Baud4800);
    m_baudComboBox->addItem("9600", QSerialPort::Baud9600);
    m_baudComboBox->addItem("19200", QSerialPort::Baud19200);
    m_baudComboBox->addItem("38400", QSerialPort::Baud38400);
    m_baudComboBox->addItem("57600", QSerialPort::Baud57600);
    m_baudComboBox->addItem("115200", QSerialPort::Baud115200);
    m_baudComboBox->setCurrentIndex(1); // 默认9600
}

void SerialPortManager::populateParities()
{
    m_parityComboBox->clear();
    m_parityComboBox->addItem("无校验", QSerialPort::NoParity);
    m_parityComboBox->addItem("奇校验", QSerialPort::OddParity);
    m_parityComboBox->addItem("偶校验", QSerialPort::EvenParity);
    m_parityComboBox->setCurrentIndex(0); // 默认无校验
}

void SerialPortManager::refreshPorts()
{
    m_portComboBox->clear();
    const auto ports = QSerialPortInfo::availablePorts();

    for (const QSerialPortInfo &port : ports) {
        QString description = port.description();
        if (description.isEmpty()) description = "未知设备";

        QString itemText = QString("%1 (%2)")
                          .arg(port.portName())
                          .arg(description);

        m_portComboBox->addItem(itemText, port.portName());
    }
    if (ports.isEmpty())
    {
        m_portComboBox->addItem("无可用端口", "");
    }
}

QString SerialPortManager::portName() const
{
    return m_portComboBox->currentData().toString();
}

int SerialPortManager::baudRate() const
{
    return m_baudComboBox->currentData().toInt();
}

QSerialPort::Parity SerialPortManager::parity() const
{
    return static_cast<QSerialPort::Parity>(m_parityComboBox->currentData().toInt());
}

QSerialPort::StopBits SerialPortManager::stopBits() const
{
    return QSerialPort::OneStop;
}

int SerialPortManager::stationAddress() const
{
    return m_stationSpinBox->value();
}