#include <QFile>
#include <QPainter>
#include <QDomDocument>
#include "CAlarmDelegate.h"
#include "CAlarmMsgInfo.h"
#include "CAlarmItemModel.h"
#include "pub_utility_api/FileUtil.h"
#include <QApplication>
#include <QMouseEvent>
#include "pub_logger_api/logger.h"

CAlarmDelegate::CAlarmDelegate(CAlarmItemModel * model, QObject *parent)
    : QStyledItemDelegate(parent),
      m_pModel(model),
      m_isFlash(false)
{
    loadColorConfig();
}

void CAlarmDelegate::loadColorConfig()
{
    QString filePath = QString::fromStdString(iot_public::CFileUtil::getCurModuleDir()) + QString("../../data/model/alarm_color_define.xml");
    QDomDocument document;
    QFile file(filePath);
    if (!file.open(QIODevice::ReadOnly))
    {
        LOGERROR("loadColorConfig Failed!");
        return;
    }
    if (!document.setContent(&file))
    {
        file.close();
        return;
    }
    file.close();

    bool isFlash = false;
    QDomElement element = document.documentElement();
    QDomNode node = element.firstChild();
    while(!node.isNull())
    {
        QDomElement attr = node.toElement();
        if(!attr.isNull())
        {
            if(QString("Flash") == attr.tagName())
            {
                isFlash = (bool)attr.attribute("alternate").toInt();
            }
            else if(QString("Level") == attr.tagName())
            {
                int priority = attr.attribute("priority").toInt();
                m_backgroundMap[priority] = QColor(attr.attribute("background_color"));
                m_alternatingMap[priority] = QColor(attr.attribute("alternating_color"));
                m_confirmMap[priority] = QColor(attr.attribute("confirm_color"));

                m_activeTextMap[priority] = QColor(attr.attribute("active_text_color"));
                m_confirmTextMap[priority] = QColor(attr.attribute("confirm_text_color"));
            }
            else if(QString("Select") == attr.tagName())
            {
                m_selectBackgroundColor = QColor(attr.attribute("background_color"));
                m_selectTextColor = QColor(attr.attribute("text_color"));
            }
            else if(QString("NoItem") == attr.tagName())
            {
                m_emptyBackgroundColor = QColor(attr.attribute("background_color"));
                m_emptyTipColor = QColor(attr.attribute("tips_color"));
                m_emptyTip = tr("当前无告警!");
            }
        }
        node = node.nextSibling();
    }

    if(E_Alarm_Pop == m_pModel->getAlarmMode())
    {
        m_isFlash = false;
    }
    else if(E_Alarm_Dock == m_pModel->getAlarmMode())
    {
        m_isFlash = true;
    }
    else if(E_Alarm_Window == m_pModel->getAlarmMode())
    {
        m_isFlash = isFlash;
    }
}

void CAlarmDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    if(!index.isValid())
    {
        return;
    }
    QColor fillColor;
    QColor penColor;
    bool select = option.state & QStyle::State_Selected;
    //< Dock Empty
    if(E_Alarm_Dock == m_pModel->getAlarmMode() && 0 == m_pModel->getShowAlarmCount())
    {
        painter->fillRect(option.rect, m_emptyBackgroundColor);
        if(CAlarmItemModel::CONTENT == index.column() && parent())
        {
            QRect rt = option.rect;
            QWidget * parentWidget = dynamic_cast<QWidget*>(parent());
            if(parentWidget)
            {
                rt.setLeft(0);
                rt.setWidth(parentWidget->width());
                painter->save();
                painter->setPen(m_emptyTipColor);
                painter->drawText(rt, Qt::AlignHCenter | Qt::AlignVCenter, m_emptyTip);
                painter->restore();
            }
        }
        return;
    }

    //< Common
    AlarmMsgPtr info = m_pModel->getAlarmInfo(index);


    if(info != Q_NULLPTR)
    {
        painter->save();

        if(E_ALS_ALARM == info->logic_state || E_ALS_RETURN == info->logic_state) //< 未确认
        {
            if(select)
            {
                fillColor = m_selectBackgroundColor;
                penColor = m_selectTextColor;
            }
            else
            {
                if(m_isFlash && m_pModel->alternate())
                {
                    penColor = m_alternatingMap.value(info->priorityOrder, Qt::white);
                }
                else
                {
                    penColor = m_activeTextMap[info->priorityOrder];
                }
                fillColor = m_backgroundMap[info->priorityOrder];
            }
        }
        else
        {
            if(select)
            {
                fillColor = m_selectBackgroundColor;
            }
            else
            {
                fillColor = m_confirmMap.value(info->priorityOrder, Qt::white);
            }
            penColor = m_confirmTextMap.value(info->priorityOrder, Qt::red);
        }
        painter->setPen(penColor);
        painter->fillRect(option.rect, fillColor);
        if( VIDEO_COLUMN == index.column() && info->m_needVideoAlm)
        {
            painter->save();
            QStyleOptionButton button;
            button.state |= QStyle::State_Enabled;
            button.rect = option.rect;

            button.rect.adjust(option.rect.width() - 40, option.rect.height()/2-10, -12, -(option.rect.height()/2-10));
            button.iconSize = QSize(button.rect.width()+2,button.rect.height()+2);
            button.icon = QIcon(iot_public::CFileUtil::getPathOfResFile("gui/icon/alarm/video.png").c_str());

            QApplication::style()->drawControl(QStyle::CE_PushButton,&button,painter);
            painter->restore();
        }
        painter->drawText(option.rect, m_pModel->data(index, Qt::TextAlignmentRole).toInt(), m_pModel->data(index).toString());
        painter->restore();
    }
}

bool CAlarmDelegate::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)
{
    if(!index.isValid())
    {
        return false;
    }
    if(index.column() != VIDEO_COLUMN)
    {
        return false;
    }
    AlarmMsgPtr info = m_pModel->getAlarmInfo(index);
    QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
    if(info &&info->m_needVideoAlm)
    {
        if(mouseEvent != NULL && mouseEvent->button() == Qt::LeftButton && mouseEvent->type() == QMouseEvent::MouseButtonPress)
        {
            QStyleOptionButton button;
            button.rect = option.rect;
            button.rect.adjust(option.rect.width() - 42, option.rect.height()/2-10, -10, -(option.rect.height()/2-10));
            QRect rect = button.rect;
            QString pointTag = info->key_id_tag;
            pointTag.remove(pointTag.length()-6,6);
            if(rect.contains(mouseEvent->pos()))
            {
                QString pointTag = info->key_id_tag;
                pointTag.remove(pointTag.length()-6,6);
                emit openVideo(info->domain_id,info->app_id,pointTag,info->time_stamp-VIDEO_TIME,info->time_stamp+VIDEO_TIME);
            }
        }
    }
    return QStyledItemDelegate::editorEvent(event, model, option, index);
}