#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QMessageBox>
#include <QDebug>
#include <QScreen>
#include <QApplication>
#include <QLabel>
#include <QMouseEvent>
#include <QSizeGrip>
#include <QSettings>
#include <QCoreApplication>
#include <QTimer>
#include "Version.h"
#include "StyledMessageBox.h"
#include "DialogConfig.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    // 设置窗口图标
#ifdef _WIN32
    this->setWindowIcon(QIcon(":/resource/logo.ico"));
#else
    this->setWindowIcon(QIcon(":/resource/logo.png"));
#endif

    // 隐藏标题栏
    setWindowFlags(Qt::FramelessWindowHint);

    // 设置状态栏
    QFont statusFont = statusBar()->font();
    statusFont.setPointSize(12);
    statusBar()->setFont(statusFont);
    statusBar()->setStyleSheet("QStatusBar { color: rgb(239, 241, 245); padding: 20px; }");

    // 添加版本信息到状态栏（只显示版本号）
    QString versionText = QString("%1").arg(GetControlVersionOnly());
    QLabel* versionLabel = new QLabel(versionText);
    versionLabel->setStyleSheet("color: rgb(239, 241, 245); font-size: 20px;");
    statusBar()->addPermanentWidget(versionLabel);


    // 设置窗口大小为1200x700，不自动最大化
    this->resize(1200, 700);
    this->setMinimumSize(1200, 700);  // 设置最小尺寸

    // 安装事件过滤器到顶部groupBox，用于拖动窗口
    ui->groupBox->installEventFilter(this);

    // 初始化工作流程显示组件
    m_workflowWidget = new WorkflowWidget(this);
    QVBoxLayout* workflowLayout = new QVBoxLayout(ui->frame_workflow);
    workflowLayout->setContentsMargins(0, 0, 0, 0);
    workflowLayout->addWidget(m_workflowWidget);

    // 初始化设备状态显示组件
    m_deviceStatusWidget = new DeviceStatusWidget(this);
    m_deviceStatusWidget->setCameraCount(1); // 显示1个相机（用于显示控制器状态）
    m_deviceStatusWidget->setCamera1Name("控制器");
    m_deviceStatusWidget->setCameraClickable(false); // 控制器不可点击
    QVBoxLayout* deviceLayout = new QVBoxLayout(ui->frame_device);
    deviceLayout->setContentsMargins(0, 0, 0, 0);
    deviceLayout->addWidget(m_deviceStatusWidget);

    // 初始化日志辅助类
    m_logHelper = new DetectLogHelper(ui->detect_log, this);

    // 创建Presenter
    m_presenter = new DemoControlPresenter(this);

    // 连接信号槽
    connect(m_presenter, &DemoControlPresenter::statusMessageUpdated,
            this, &MainWindow::onStatusMessageUpdated);
    connect(m_presenter, &DemoControlPresenter::workflowStepChanged,
            this, &MainWindow::onWorkflowStepChanged);
    connect(m_presenter, &DemoControlPresenter::controllerConnectionChanged,
            this, &MainWindow::onControllerConnectionChanged);
    connect(m_presenter, &DemoControlPresenter::robotConnectionChanged,
            this, &MainWindow::onRobotConnectionChanged);
    connect(m_presenter, &DemoControlPresenter::detectionResultUpdated,
            this, &MainWindow::onDetectionResultUpdated);

    // 初始化按钮状态
    ui->btn_pause->setEnabled(false);
    ui->btn_step->setEnabled(true);

    // 初始化
    Init();
}

MainWindow::~MainWindow()
{
    if (m_presenter) {
        delete m_presenter;
        m_presenter = nullptr;
    }
    delete ui;
}

void MainWindow::Init()
{
    updateStatusLog("主控程序初始化中...");

    // 在线程中执行初始化
    std::thread initThread([this]() {
        int result = m_presenter->Init();
        if (result != 0) {
            updateStatusLog(QString("初始化失败，错误码：%1").arg(result));
        } else {
            updateStatusLog("系统初始化完成");
        }

        // 从配置文件加载配置
        QMetaObject::invokeMethod(this, [this]() {
            // 加载配置到Presenter
            DialogConfig::LoadConfigToPresenter(m_presenter);
            updateStatusLog("配置已加载");

            // 从配置文件读取连接参数
            QSettings settings(DialogConfig::GetConfigFilePath(), QSettings::IniFormat);
            QString controllerIP = settings.value("Controller/IP", "192.168.0.88").toString();
            int controllerPort = settings.value("Controller/Port", 502).toInt();
            QString robotIP = settings.value("Robot/IP", "192.168.58.2").toString();

            updateStatusLog(QString("正在连接控制器 %1:%2...").arg(controllerIP).arg(controllerPort));
            m_presenter->ConnectToController(controllerIP, controllerPort);

            updateStatusLog(QString("正在连接机械臂 %1...").arg(robotIP));
            m_presenter->ConnectToRobot(robotIP);
        }, Qt::QueuedConnection);
    });

    initThread.detach();
}

void MainWindow::updateStatusLog(const QString& message)
{
    if (m_logHelper) {
        m_logHelper->appendLog(message);
    }
}

void MainWindow::on_btn_start_clicked()
{
    if (!m_presenter) {
        updateStatusLog("系统未初始化");
        return;
    }

    if (!m_presenter->IsControllerConnected()) {
        StyledMessageBox::warning(this, "警告", "控制器未连接，无法启动工作流程");
        return;
    }

    if (!m_presenter->IsRobotConnected()) {
        StyledMessageBox::warning(this, "警告", "机械臂未连接，无法启动工作流程");
        return;
    }

    updateStatusLog("启动工作流程...");
    m_presenter->StartWorkflow();

    // 更新按钮状态：连续执行模式
    ui->btn_start->setEnabled(false);
    ui->btn_pause->setEnabled(true);
    ui->btn_pause->setText("暂停");
    ui->btn_step->setEnabled(false);  // 连续执行时禁用单步
}

void MainWindow::on_btn_stop_clicked()
{
    if (!m_presenter) {
        updateStatusLog("系统未初始化");
        return;
    }

    updateStatusLog("停止工作流程...");
    m_presenter->StopWorkflow();
    m_workflowWidget->reset();

    // 更新按钮状态：停止后恢复初始状态
    ui->btn_start->setEnabled(true);
    ui->btn_pause->setEnabled(false);
    ui->btn_pause->setText("暂停");
    ui->btn_step->setEnabled(true);
}

void MainWindow::on_btn_pause_clicked()
{
    if (!m_presenter) {
        updateStatusLog("系统未初始化");
        return;
    }

    if (m_presenter->IsWorkflowPaused()) {
        // 当前是暂停状态，点击恢复
        updateStatusLog("恢复工作流程...");
        m_presenter->ResumeWorkflow();
        ui->btn_pause->setText("暂停");
        ui->btn_step->setEnabled(false);  // 恢复后禁用单步
        ui->btn_start->setEnabled(false);  // 恢复后禁用开始
    } else {
        // 当前是运行状态，点击暂停
        updateStatusLog("暂停工作流程...");
        m_presenter->PauseWorkflow();
        ui->btn_pause->setText("继续");
        ui->btn_step->setEnabled(true);  // 暂停后启用单步
        ui->btn_start->setEnabled(false);  // 暂停时仍然禁用开始
    }
}

void MainWindow::on_btn_step_clicked()
{
    if (!m_presenter) {
        updateStatusLog("系统未初始化");
        return;
    }

    if (!m_presenter->IsControllerConnected()) {
        StyledMessageBox::warning(this, "警告", "控制器未连接，无法执行单步");
        return;
    }

    if (!m_presenter->IsRobotConnected()) {
        StyledMessageBox::warning(this, "警告", "机械臂未连接，无法执行单步");
        return;
    }

    updateStatusLog("执行单步...");
    m_presenter->StepWorkflow();

    // 更新按钮状态
    if (!m_presenter->IsWorkflowRunning()) {
        // 首次单步，启动工作流程
        ui->btn_start->setEnabled(false);
        ui->btn_pause->setEnabled(true);
        ui->btn_pause->setText("继续");
    }
}

void MainWindow::on_btn_config_clicked()
{
    if (!m_presenter) {
        updateStatusLog("系统未初始化");
        return;
    }

    if (!m_dialogConfig) {
        m_dialogConfig = new DialogConfig(m_presenter, this);
    }

    m_dialogConfig->exec();
}

void MainWindow::on_btn_fullscreen_clicked()
{
    if (m_isFullScreen) {
        // 退出全屏，恢复到正常窗口
        setWindowFlags(Qt::FramelessWindowHint);
        setGeometry(m_normalGeometry);
        showNormal();
        m_isFullScreen = false;
        updateStatusLog("退出全屏");
    } else {
        // 进入全屏
        m_normalGeometry = geometry();
        setWindowFlags(Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint);
        showFullScreen();
        m_isFullScreen = true;
        updateStatusLog("进入全屏");
    }
}

void MainWindow::on_btn_hide_clicked()
{
    this->showMinimized();
}

void MainWindow::on_btn_close_clicked()
{
    this->close();
}

void MainWindow::onStatusMessageUpdated(const QString& message)
{
    updateStatusLog(message);
}

void MainWindow::onWorkflowStepChanged(WorkflowStep step, const QString& message)
{
    m_workflowWidget->updateStep(step);
    updateStatusLog(message);

    // 如果工作流程完成，检查是否真的结束了
    if (step == WorkflowStep::Completed) {
        // 延迟检查工作流程是否真的停止
        QTimer::singleShot(100, this, [this]() {
            if (!m_presenter->IsWorkflowRunning()) {
                // 工作流程已停止，更新按钮状态
                ui->btn_start->setEnabled(true);
                ui->btn_pause->setEnabled(false);
                ui->btn_pause->setText("暂停");
                ui->btn_step->setEnabled(true);
            } else if (m_presenter->IsWorkflowStepMode()) {
                // 单步模式下完成一轮，保持"继续"按钮状态不变
                // 按钮应该显示"继续"，因为处于单步等待状态
                ui->btn_pause->setText("继续");
            }
        });
    } else if (step == WorkflowStep::Error) {
        // 出错时立即更新按钮状态
        ui->btn_start->setEnabled(true);
        ui->btn_pause->setEnabled(false);
        ui->btn_pause->setText("暂停");
        ui->btn_step->setEnabled(true);
    }
}

void MainWindow::onControllerConnectionChanged(bool connected)
{
    // 更新设备状态显示（使用相机1状态显示控制器连接状态）
    if (m_deviceStatusWidget) {
        m_deviceStatusWidget->updateCamera1Status(connected);
    }

    if (connected) {
        updateStatusLog("控制器已连接");
    } else {
        updateStatusLog("控制器已断开");
    }
}

void MainWindow::onRobotConnectionChanged(bool connected)
{
    if (m_deviceStatusWidget) {
        m_deviceStatusWidget->updateRobotStatus(connected);
    }

    if (connected) {
        updateStatusLog("机械臂已连接");
    } else {
        updateStatusLog("机械臂已断开");
    }
}

void MainWindow::onDetectionResultUpdated(const DetectionResult& result)
{
    m_workflowWidget->updateDetectionResult(result);
}

void MainWindow::mousePressEvent(QMouseEvent *event)
{
    if (event->button() == Qt::LeftButton) {
        ResizeRegion region = getResizeRegion(event->pos());
        if (region != None) {
            // 开始缩放
            m_isResizing = true;
            m_resizeRegion = region;
            m_resizeStartPos = event->globalPos();
            m_resizeStartGeometry = this->geometry();
            event->accept();
        }
    }
}

void MainWindow::mouseMoveEvent(QMouseEvent *event)
{
    if (m_isResizing && (event->buttons() & Qt::LeftButton)) {
        // 处理窗口缩放
        QPoint delta = event->globalPos() - m_resizeStartPos;
        QRect newGeometry = m_resizeStartGeometry;

        if (m_resizeRegion & Left) {
            newGeometry.setLeft(m_resizeStartGeometry.left() + delta.x());
        }
        if (m_resizeRegion & Right) {
            newGeometry.setRight(m_resizeStartGeometry.right() + delta.x());
        }
        if (m_resizeRegion & Top) {
            newGeometry.setTop(m_resizeStartGeometry.top() + delta.y());
        }
        if (m_resizeRegion & Bottom) {
            newGeometry.setBottom(m_resizeStartGeometry.bottom() + delta.y());
        }

        // 确保不小于最小尺寸
        if (newGeometry.width() >= minimumWidth() && newGeometry.height() >= minimumHeight()) {
            this->setGeometry(newGeometry);
        }
        event->accept();
    } else if (!m_isDragging) {
        // 更新鼠标光标
        ResizeRegion region = getResizeRegion(event->pos());
        updateCursor(region);
    }
}

void MainWindow::mouseReleaseEvent(QMouseEvent *event)
{
    if (event->button() == Qt::LeftButton) {
        m_isResizing = false;
        m_resizeRegion = None;
        m_isDragging = false;
        updateCursor(None);
        event->accept();
    }
}

MainWindow::ResizeRegion MainWindow::getResizeRegion(const QPoint& pos)
{
    int region = None;

    if (pos.x() <= RESIZE_BORDER_WIDTH) {
        region |= Left;
    } else if (pos.x() >= width() - RESIZE_BORDER_WIDTH) {
        region |= Right;
    }

    if (pos.y() <= RESIZE_BORDER_WIDTH) {
        region |= Top;
    } else if (pos.y() >= height() - RESIZE_BORDER_WIDTH) {
        region |= Bottom;
    }

    return static_cast<ResizeRegion>(region);
}

void MainWindow::updateCursor(ResizeRegion region)
{
    switch (region) {
        case TopLeft:
        case BottomRight:
            setCursor(Qt::SizeFDiagCursor);
            break;
        case TopRight:
        case BottomLeft:
            setCursor(Qt::SizeBDiagCursor);
            break;
        case Left:
        case Right:
            setCursor(Qt::SizeHorCursor);
            break;
        case Top:
        case Bottom:
            setCursor(Qt::SizeVerCursor);
            break;
        default:
            setCursor(Qt::ArrowCursor);
            break;
    }
}

bool MainWindow::eventFilter(QObject *obj, QEvent *event)
{
    // 只在顶部groupBox区域允许拖动
    if (obj == ui->groupBox) {
        if (event->type() == QEvent::MouseButtonPress) {
            QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
            if (mouseEvent->button() == Qt::LeftButton) {
                m_isDragging = true;
                m_dragPosition = mouseEvent->globalPos() - this->frameGeometry().topLeft();
                return true;
            }
        }
        else if (event->type() == QEvent::MouseMove) {
            QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
            if (m_isDragging && (mouseEvent->buttons() & Qt::LeftButton)) {
                this->move(mouseEvent->globalPos() - m_dragPosition);
                return true;
            }
        }
        else if (event->type() == QEvent::MouseButtonRelease) {
            QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
            if (mouseEvent->button() == Qt::LeftButton) {
                m_isDragging = false;
                return true;
            }
        }
    }
    return QMainWindow::eventFilter(obj, event);
}