#include "drawingPanel.h"
#include "diagramCavas.h"
#include "mainwindow.h"
#include "dataBase.h"
#include "graphicsItem/graphicsBaseItem.h"
#include <QMdiSubWindow>
#include <QMessageBox>
#include <QJsonObject>

DiagramCavas::DiagramCavas(QWidget *parent)
    : QMdiArea(parent)
{
    _pageIndex = 0;
}

DiagramCavas::~DiagramCavas()
{

}

void DiagramCavas::initial()
{
    //todo:读取数据并初始化
    //onSignal_addDrawingPanel(QString("electricElements"));
}

void DiagramCavas::onSignal_addDrawingPanel(const QString& sTitile,DiagramMode mode)
{
    DrawingPanel*  pPanel = new DrawingPanel(this,mode);
    _curPage = sTitile;
    pPanel->setPageName(sTitile);
    m_mapDrawPanel.insert(sTitile,pPanel);
    pPanel->setWindowTitle(sTitile);
    this->addSubWindow(pPanel);
    pPanel->show();

    FixedPortsModel* pModel = pPanel->getModel();
    connect(pModel,&FixedPortsModel::activatePage,this,&DiagramCavas::onSignal_activatePage);
    connect(pPanel,&DrawingPanel::panelDelete,this,&DiagramCavas::onSignal_panelDelete);
}

void DiagramCavas::onSignal_addGraphicsItem(modelStateInfo& info)
{
    QWidget* pWindow= currentSubWindow()->widget();
    DrawingPanel* pPanel = dynamic_cast<DrawingPanel*>(pWindow);

    if(pPanel)
        pPanel->onSignal_addGraphicsItem(info);
}

void DiagramCavas::onSignal_addPage()
{
    onSignal_addDrawingPanel(QString("Page_")+QString::number(++_pageIndex));
}

void DiagramCavas::onSignal_savePage()
{
    QWidget* pWindow= currentSubWindow()->widget();
    DrawingPanel* pPanel = dynamic_cast<DrawingPanel*>(pWindow);
    if(pPanel)
    {
        if(pPanel->getMode() == DM_run)
        {
            QMessageBox::about(NULL,QString::fromWCharArray(L"提示"), QString::fromWCharArray(L"运行中无法保存！"));
        }
        else if(pPanel->getMode() == DM_edit)
        {
            _curPage = pPanel->pageName();
            QMessageBox msgBox;
            msgBox.setText(QString::fromWCharArray(L"提示"));
            msgBox.setInformativeText(QString::fromWCharArray(L"内容已修改,是否保存?"));
            msgBox.setStandardButtons(QMessageBox::Save | QMessageBox::Cancel);
            msgBox.setDefaultButton(QMessageBox::Save);
            int ret = msgBox.exec();

            switch (ret) {
            case QMessageBox::Save:                 //todo:已存在更新
            {
                QMap<QUuid,GraphicsBaseItem*> map = pPanel->getModel()->allItems();
                for(auto pItem:map)
                {
                    if(pItem->itemChanged())
                    {
                        pItem->updateConnectData();     //更新连接状态
                        pItem->setItemChanged(false);
                    }
                }

                if(DataBase::GetInstance()->getPageIdByName(_curPage) == -1)        //不存在，创建
                    DataBase::GetInstance()->insertPage(_curPage,_curPage,1,QJsonObject(),pPanel->getDiagramInfo(),QString("page"),1);
                else
                    DataBase::GetInstance()->updatePage(_curPage,_curPage,pPanel->getDiagramInfo());
                int pageId = DataBase::GetInstance()->getPageIdByName(_curPage);
                pPanel->saveNodes(pageId);
            }
            break;
            case QMessageBox::Cancel:
                // Cancel was clicked
                break;
            default:
                // should never be reached
                break;
            }
        }
    }
}

void DiagramCavas::onSignal_loadPage(const QString& sName)
{
    if(!m_mapDrawPanel.contains(sName))
    {
        //todo:加载数据
        onSignal_addDrawingPanel(sName);
        QJsonObject context = DataBase::GetInstance()->getPageContextByName(sName);
        m_mapDrawPanel[sName]->loadNodes(context);
    }
    else        //已存在
    {
        m_mapDrawPanel[sName]->show();
    }
}

void DiagramCavas::runPage(const QString sName)
{
    QString pageName = sName+QString("_run");
    if(!m_mapDrawPanel.contains(pageName))
    {
        onSignal_addDrawingPanel(pageName,DM_run);
        QJsonObject context = DataBase::GetInstance()->getPageContextByName(sName);
        m_mapDrawPanel[pageName]->loadNodes(context);
    }
    else        //已存在
    {
        m_mapDrawPanel[pageName]->show();
    }
}

void DiagramCavas::onSignal_runPage()
{
    runPage(_curPage);
}

void DiagramCavas::onSignal_deletePage()
{

}

void DiagramCavas::onSignal_activatePage(const QString& name)
{
    _curPage = name;
}

void DiagramCavas::onSignal_panelDelete(const QString& name)
{
    DrawingPanel* pPanel = m_mapDrawPanel.take(name);
    if(m_mapDrawPanel.isEmpty())
    {
        /*for(auto it = FixedPortsModel::_nodeData.begin();it!=FixedPortsModel::_nodeData.end();)
        {
            it = FixedPortsModel::_nodeData.erase(it);
        }*/
        qDeleteAll(FixedPortsModel::_nodeData);
        FixedPortsModel::_nodeData.clear();
        FixedPortsModel::_dataInitialised = false;
    }
    this->removeSubWindow(pPanel);
    delete pPanel;
}