#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "item.h"

#include <QListWidgetItem>
#include <QMimeData>
#include <QDrag>
#include <QPainter>
#include <QMouseEvent>
#include <QDropEvent>
#include <QGraphicsView>
#include <QMessageBox>
#include <QAction>
#include <QFileDialog>
#include "creatitem.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    registerManager = new RegisterManager(this);
    plc_ = new PLC(registerManager, ui->widget);
    hmi_ = new HMI(ui->widget);
    modbusManager = new ModbusManager(registerManager, this);
    plc_->show();
    hmi_->hide();
    connect(ui->action_plc,&QAction::triggered,this,&MainWindow::plcChange);
    connect(ui->action_hmi,&QAction::triggered,this,&MainWindow::hmiChange);

    connect(ui->action_new, &QAction::triggered, this, &MainWindow::newProject);
    connect(ui->action_save, &QAction::triggered, this, &MainWindow::saveProject);
    connect(ui->action_open, &QAction::triggered, this, &MainWindow::openProject);
    connect(ui->action_connect, &QAction::triggered, this, &MainWindow::connection);
    connect(ui->action_disconnect, &QAction::triggered, this, &MainWindow::disconnection);

    connect(modbusManager, &ModbusManager::connectionStatusChanged,
            plc_, &PLC::updateConnectionStatus);


    plc_->applyProjectToScene(plcProject_); // 初始空
    hmi_->applyProjectToScene(hmiProject_);
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::plcChange()
{
    plc_->show();
    hmi_->hide();
    currentIsPLC_ = true;
    setWindowTitle((plcFilePath_.isEmpty() ? "未命名项目" : QFileInfo(plcFilePath_).fileName()) + " - PLC编辑器");
}

void MainWindow::hmiChange()
{
    hmi_->show();
    plc_->hide();
    currentIsPLC_ = false;
    setWindowTitle((hmiFilePath_.isEmpty() ? "未命名项目" : QFileInfo(hmiFilePath_).fileName()) + " - HMI编辑器");
}

void MainWindow::newProject()
{
    if (currentIsPLC_) {
        plcProject_.clear();
        plcFilePath_.clear();
        plc_->clearScene();
        setWindowTitle("未命名项目 - PLC编辑器");
    } else {
        hmiProject_.clear();
        hmiFilePath_.clear();
        hmi_->clearScene();
        setWindowTitle("未命名项目 - HMI编辑器");
    }
}

void MainWindow::openProject()
{
    if (currentIsPLC_)
    {
        QString filePath = QFileDialog::getOpenFileName(this, "打开项目", "", "项目文件 (*.plcproj)");
        if (filePath.isEmpty()) return;
        if (plcProject_.loadFromFile(filePath))
        {
            plcFilePath_ = filePath;
            plc_->applyProjectToScene(plcProject_);
            setWindowTitle(QFileInfo(plcFilePath_).fileName() + " - PLC编辑器");
        }
        else
        {
            QMessageBox::critical(this, "错误", "无法打开PLC项目文件");
        }
    }
    else
    {
        QString filePath = QFileDialog::getOpenFileName(this, "打开项目", "", "项目文件 (*.hmiproj)");
        if (filePath.isEmpty()) return;
        if (hmiProject_.loadFromFile(filePath))
        {
            hmiFilePath_ = filePath;
            hmi_->applyProjectToScene(hmiProject_);
            setWindowTitle(QFileInfo(hmiFilePath_).fileName() + " - HMI编辑器");
        }
        else
        {
            QMessageBox::critical(this, "错误", "无法打开HMI项目文件");
        }
    }
}

void MainWindow::saveProject()
{
    if (currentIsPLC_) {
        if (plcFilePath_.isEmpty()) {
            QString filePath = QFileDialog::getSaveFileName(this, "保存项目", "", "PLC项目文件 (*.plcproj)");
            if (filePath.isEmpty()) return;
            if (!filePath.endsWith(".plcproj", Qt::CaseInsensitive))
                filePath += ".plcproj";
            plcFilePath_ = filePath;
        }
        plc_->extractSceneToProject(plcProject_);
        if (!plcProject_.saveToFile(plcFilePath_)) {
            QMessageBox::critical(this, "错误", "保存项目失败");
        }
    } else {
        if (hmiFilePath_.isEmpty()) {
            QString filePath = QFileDialog::getSaveFileName(this, "保存项目", "", "HMI项目文件 (*.hmiproj)");
            if (filePath.isEmpty()) return;
            if (!filePath.endsWith(".hmiproj", Qt::CaseInsensitive))
                filePath += ".hmiproj";
            hmiFilePath_ = filePath;
        }
        hmi_->extractSceneToProject(hmiProject_);
        if (!hmiProject_.saveToFile(hmiFilePath_)) {
            QMessageBox::critical(this, "错误", "保存项目失败");
        }
    }
}

void MainWindow::connection()
{
    modbusManager->connectToDevice("COM1",QSerialPort::BaudRate(9600),QSerialPort::DataBits(8),QSerialPort::EvenParity,QSerialPort::StopBits(1));
    modbusManager->startSimulation(2000);
}

void MainWindow::disconnection()
{
    modbusManager->disconnectDevice();
    modbusManager->stopSimulation();
}