#include <QJsonArray>
#include "baseDrawingPanel.h"
#include <QMessageBox>
#include <QCloseEvent>
#include "designerView.h"
#include "graphicsDataModel/fixedPortsModel.h"
#include "graphicsItem/graphicsBaseItem.h"
#include "util/selectorManager.h"
#include "statusBar.h"
#include "powerEntity.h"
#include "diagramCavas.h"
#include "topologyManager.h"
#include "basePannelPropertyProxy.h"
#include "common/core_model/constants.h"

BaseDrawingPanel::BaseDrawingPanel(PowerEntity* pEntity,QWidget *parent,DiagramMode mode)
    : QWidget(parent)
    ,_pModel(nullptr)
    ,_mode(mode)
    ,_pEntity(nullptr)
    ,_verticalLayout(nullptr)
    ,_horizontalLayout(nullptr)
    ,_hSplitter(nullptr)
{
    _pEntity = pEntity;
    _pModel = new FixedPortsModel(pEntity);
    _pModel->setTopWidget(this);
    m_pSelectorManager = new SelectorManager(_pModel,this);
    m_pGraphicsScene = new DesignerScene(_pModel,this);
    //设置场景大小.前两个参数为scene的坐标远点，设置到view的中心点后，无论view如何缩放，secne的坐标原点都不会动，方便后续的位置计算
    m_pGraphicsScene->setSceneRect(0,0, Constants::SCENE_WIDTH*4, Constants::SCENE_HEIGHT*4);
    m_pGraphicsScene->setGridVisible(true);

    m_pGraphicsView = new DesignerView(this);
    m_pGraphicsView->setScene(m_pGraphicsScene);
    m_pGraphicsView->setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
    m_pGraphicsScene->setView(m_pGraphicsView);
    _pModel->setScene(m_pGraphicsScene);
    connect(m_pGraphicsScene, &DesignerScene::selectionChanged, _pModel, &FixedPortsModel::onSelectionChanged);

    m_pStatusBar = new StatusBar(this);
    m_pStatusBar->setMaximumHeight(25);
    connect(m_pGraphicsView,&DesignerView::onScaleChanged,m_pStatusBar,&StatusBar::onScaleLevelChanged);

    _horizontalLayout = new QHBoxLayout();
    //_horizontalLayout->addWidget(m_pGraphicsView);
    _horizontalLayout->setContentsMargins(0, 0, 0, 0);
    _horizontalLayout->setSpacing(0);

    _hSplitter = new QSplitter(Qt::Horizontal);
    _hSplitter->setHandleWidth(2); // 设置分割条宽度

    _hSplitter->addWidget(m_pGraphicsView);
    _horizontalLayout->addWidget(_hSplitter);

    _verticalLayout = new QVBoxLayout(this);
    _verticalLayout->addLayout(_horizontalLayout);
    _verticalLayout->addWidget(m_pStatusBar);
    _verticalLayout->setContentsMargins(0, 0, 0, 0);
    _verticalLayout->setSpacing(0);

    _pPropertyProxy = new BasePannelPropertyProxy(this);
}

BaseDrawingPanel::~BaseDrawingPanel()
{
    //if(_pModel)
    //    delete _pModel;
}

QGraphicsScene* BaseDrawingPanel::getQGraphicsScene()
{
    return m_pGraphicsView->scene();
}

DesignerScene* BaseDrawingPanel::getDesignerScene()
{
    return m_pGraphicsScene;
}

BasePannelPropertyProxy* BaseDrawingPanel::getPropertyProxy()
{
    return _pPropertyProxy.data();
}

void BaseDrawingPanel::moveItemsAlignment(Qt::Alignment alignment,const QMarginsF& margins)
{
    QList<QGraphicsItem*> items = m_pGraphicsScene->items();
    if (items.isEmpty() || !m_pGraphicsScene) return;

    // 1. 创建组
    QGraphicsItemGroup* group = m_pGraphicsScene->createItemGroup(items);

    // 2. 获取边界矩形
    QRectF groupRect = group->boundingRect();
    QRectF sceneRect = m_pGraphicsScene->sceneRect();

    // 3. 计算新位置
    QPointF targetPos = group->pos();

    // 水平对齐
    if (alignment & Qt::AlignLeft) {
        targetPos.setX(sceneRect.left() + margins.left());
    } else if (alignment & Qt::AlignRight) {
        targetPos.setX(sceneRect.right() - groupRect.width() - margins.right());
    } else if (alignment & Qt::AlignHCenter) {
        targetPos.setX(sceneRect.center().x() - groupRect.width() / 2);
    }

    // 垂直对齐
    if (alignment & Qt::AlignTop) {
        targetPos.setY(sceneRect.top() + margins.top());
    } else if (alignment & Qt::AlignBottom) {
        targetPos.setY(sceneRect.bottom() - groupRect.height() - margins.bottom());
    } else if (alignment & Qt::AlignVCenter) {
        targetPos.setY(sceneRect.center().y() - groupRect.height() / 2);
    }

    // 4. 计算偏移量
    QPointF offset = targetPos - groupRect.topLeft();
    group->setPos(group->pos() + offset);

    // 5. 取消分组
    m_pGraphicsScene->destroyItemGroup(group);
}

void BaseDrawingPanel::centerOnTopLeft() {
    // 获取场景左上角
    QRectF sceneRect = m_pGraphicsScene->sceneRect();
    QPointF topLeft = sceneRect.topLeft();

    // 将视图中心对准左上角
    m_pGraphicsView->centerOn(topLeft);
}

SelectorManager* BaseDrawingPanel::selectorManager() const
{
    if(m_pSelectorManager)
        return m_pSelectorManager;
    else
        return NULL;
}