#include "LanPaper.h"

LanPaper::LanPaper(QWidget *parent) :
    QMainWindow(parent),server(new Server(this))
{
    setupUi(this);
    this->server->listen(QHostAddress(Config::getSrcIP()),QString(Config::getSrcPort()).toInt() );
    //install message key filter
    this->pTEMessage->installEventFilter(this);
    this->installEventFilter(this);
    this->trayIco=new TrayIco(this);
    connect(this->actionAbout,SIGNAL(triggered()),this,SLOT(aboutClick()) );
    QScrollBar* scrollBar=this->pTEChatText->verticalScrollBar();
    scrollBar->setTracking(true);

}


void LanPaper::addChatContentToThereSide(const QString& content)
{
    QTime time=QTime::currentTime();
    QString displayTime=QString("%1:%2:%3").arg(time.hour()).arg(time.minute()).arg(time.second());
    this->pTEChatText->appendPlainText(displayTime+":There");
    this->pTEChatText->appendPlainText(content);
    this->pTEChatText->appendPlainText("  ");
    if(this->isHidden()||this->isMinimized()||!this->isWindowsActivated())
    {
        this->trayIco->setFlash(true);
    }
    this->scrollToBottom();
}

QString LanPaper::getMessage()
{
    return this->pTEMessage->toPlainText();
}

void LanPaper::on_pBTSendMessage_clicked()
{

    QString text=this->pTEMessage->toPlainText();
    if(text.trimmed()=="")
    {
        QMessageBox::information(this,"warning","no empty message allowed.");
        return;
    }
    this->addChatContentToMeSide(text);
    this->client=new Client(this);
    connect(this->client,SIGNAL(connectionSuccess(bool)),this,SLOT(clientSuccess(bool)) );
    this->client->sendMessage(text);
    this->pBTSendMessage->setEnabled(false);

}

void LanPaper::addChatContentToMeSide(const QString& content)
{
    QTime time=QTime::currentTime();
    QString displayTime=QString("%1:%2:%3").arg(time.hour()).arg(time.minute()).arg(time.second());
    this->pTEChatText->appendPlainText("                              Me:"+displayTime);
    this->pTEChatText->appendPlainText("                         "+content);
    this->pTEChatText->appendPlainText("  ");
    this->scrollToBottom();
}

bool LanPaper::eventFilter(QObject *obj, QEvent *event)
{
    if(obj==this->pTEMessage)
    {
        if(event->type()==QEvent::KeyPress)
        {
            QKeyEvent* keyEvent=(QKeyEvent*)event;
            if(keyEvent->key()==Qt::Key_Return||keyEvent->key()==Qt::Key_Enter)
            {
                this->on_pBTSendMessage_clicked();
                event->accept();
                return true;
            }
        }
    }
    if(obj==this)
    {
        if(event->type()==QEvent::WindowActivate)
        {
            this->trayIco->setFlash(false);
        }
    }
    return false;
}

void LanPaper::changeEvent(QEvent *e)
{
    if((e->type()==QEvent::WindowStateChange)&&this->isMinimized())
    {
        this->hide();
    }
}

void LanPaper::aboutClick()
{
    QString srcIP=Config::getSrcIP();
    QString srcPort=Config::getSrcPort();
    QString desIP=Config::getDesIP();
    QString desPort=Config::getDesPort();
    QString info;
    info=QString("src %1:%2\n des %3:%4").arg(srcIP).arg(srcPort).arg(desIP).arg(desPort);
    QMessageBox::about(this,"about",info);
}

void LanPaper::clientSuccess(bool success)
{
    if(success)
    {
        this->pTEMessage->setPlainText("");
    }
    else
    {
        QMessageBox::warning(this,"warning","message send failed.");
    }
    this->pBTSendMessage->setEnabled(true);
    this->pTEMessage->setFocus();
    this->client->deleteLater();
}

bool LanPaper::isWindowsActivated()
{
    if(this->isActiveWindow())
    {
        return true;
    }
    if(this->pTEChatText->isActiveWindow())
    {
        return true;
    }
    if(this->pTEChatText->isActiveWindow())
    {
        return true;
    }
    return false;
}


void LanPaper::scrollToBottom()
{
    QScrollBar* scrollBar=this->pTEChatText->verticalScrollBar();
    scrollBar->setValue(scrollBar->maximum());
}