#include "GWt_console.h"

#include <Wt/WApplication>
#include <Wt/WText>
#include <Wt/WBorder>
#include <Wt/WLayout>
#include <Wt/WVBoxLayout>
#include <Wt/WPanel>
#include <Wt/WLabel>
#include <Wt/WLineEdit>
#include <Wt/WScrollArea>
#include <Wt/Utils>


GWt_console::GWt_console()
:WContainerWidget()
{
    setObjectName("console");


    // la ligne de search
    Wt::WContainerWidget *searchContainer = new Wt::WContainerWidget();
    
    Wt::WLabel *label = new Wt::WLabel("Search ", searchContainer);
    searchLineEdit_ = new Wt::WLineEdit("", searchContainer);
    searchLineEdit_->setToolTip("clic here to search a string in the output");
    
    // le panel
    WPanel *panelConsole = new WPanel(this);
    panelConsole->setTitle(" output");

    WScrollArea* scrollContainer = new  WScrollArea();
    

    outputCurrent_ = new WText(this);
    outputCurrent_->setTextFormat(Wt::XHTMLText);
    outputCurrent_->setInline(false);
    outputCurrent_->setMaximumSize(750,400);

    scrollContainer->setWidget(outputCurrent_);
    scrollContainer->setStyleClass("scrollConsole");

    Wt::WContainerWidget *panelContainer = new Wt::WContainerWidget();
    Wt::WVBoxLayout* vContainerLayout = new Wt::WVBoxLayout();

    vContainerLayout->addWidget(searchContainer);
    vContainerLayout->addWidget(scrollContainer);


    panelContainer->setLayout(vContainerLayout);
    panelConsole->setCentralWidget(panelContainer);

    // signals
    searchLineEdit_->keyWentUp ().connect(this, &GWt_console::searchFilter);
}


GWt_console::~GWt_console()
{
}


void GWt_console::searchFilter() {

    std::string br = "<br />";
    
    std::string txt = searchLineEdit_->text().toUTF8 ();
    if (searchLineEdit_->text() == "") {
        outputCurrent_->setText(outputOriginal_);
        outputCurrent_->setTextFormat(Wt::XHTMLText);
        return;
    }
    
    std::string outputStr = outputOriginal_.toUTF8();
    std::string outputFinal = "";
    
    // look for lines that contains the seacrh string
    bool end = false;
    int nextPos = 0;
    int nextPosTxt = 0;
    int lineNumber = 0;
    std::string beginStr;
    std::string endStr;
    
    // loop on all lines
    while (end == false) {
        lineNumber++;
        
        nextPos = outputStr.find(br);
        
        // if this line contains the token
        if (nextPos != std::string::npos) {
            beginStr = outputStr.substr(0,nextPos);
            endStr = outputStr.substr(nextPos+br.size());
            outputStr = endStr;


            // colorize for all token
            bool lineEnd = false;
            std::string colorizeTxt = "";
            while (lineEnd == false) {
                nextPosTxt = beginStr.find(txt);
                
                if (nextPosTxt != std::string::npos) {
                    colorizeTxt += beginStr.substr(0,nextPosTxt)+
                    std::string("<b><font style='background-color:yellow;'>")+
                    txt+
                    std::string("</font></b>");
                    beginStr = beginStr.substr(nextPosTxt+txt.size());
                    
                } else if (colorizeTxt != "") {
                    colorizeTxt += beginStr;
                    lineEnd = true;
                } else {
                    lineEnd = true;
                }
            }
            if (colorizeTxt != "") {
                std::stringstream ss;
                ss << lineNumber;
                outputFinal += std::string("<font color='gray'>line ")+ss.str()+" : </font>"+colorizeTxt+br;
            }
        } else {
            end = true;
        }
    }
    
    outputCurrent_->setText(outputFinal);
    outputCurrent_->setTextFormat(Wt::XHTMLText);

}


void GWt_console::addConsoleMessage(WString msg) {
    
    // changes specials caracters
    outputOriginal_ += Wt::Utils::htmlEncode (msg.toUTF8(),  Wt::Utils::EncodeNewLines);

    // apply filter, will modify outputCurrent
    searchFilter();
    /*
     * Little javascript trick to make sure we scroll along with new content
     */
    wApp->doJavaScript(outputCurrent_->jsRef() + ".scrollTop += "
                       + outputCurrent_->jsRef() + ".scrollHeight;");
    
}