////////////////////////////////////////////////////////////////////////////////
/**
 *  \file     xmlparser.cpp
 *  \version  v1.0
 *  \author   Ing. Dominik Malcik
 */
////////////////////////////////////////////////////////////////////////////////

#include "xmlparser.h"
#include "project.h"
#include "mainwindow.h"

XMLparser::XMLparser(QWidget *parent) :
    QMainWindow(parent)
{
}

bool XMLparser::read(QIODevice *device) {

    QString errorStr;
    int errorLine;
    int errorColumn;

    if (!domDocument.setContent(device, true, &errorStr, &errorLine, &errorColumn)) {
        QMessageBox::information(this, tr("microAnalyzer :: ERROR"),
                                 tr("Project file parse error at line %1, column %2:\n%3")
                                 .arg(errorLine)
                                 .arg(errorColumn)
                                 .arg(errorStr));
        return false;
    }

    QDomElement root = domDocument.documentElement();

    if (root.tagName() != "ma_project") {
        QMessageBox::critical(window(), tr("microAnalyzer :: ERROR"), tr("The file is not a microAnalyzer project file."));
        return false;
    } else if (root.hasAttribute("version") && root.attribute("version") != "1.0") {
        QMessageBox::critical(window(), tr("microAnalyzer :: ERROR"), tr("The file is not a microAnalyzer project file version 1.0."));
        return false;
    }

    // basic values
    QString childName = root.firstChildElement("name").text();
    QString childFileImported = root.firstChildElement("fileImported").text();
    QString childImagesDir = root.firstChildElement("imagesDir").text();
    QString childLayersDir = root.firstChildElement("layersDir").text();

    // load information from xml to the project instance
    cProject::Instance()->setProjectName(childName);
    cProject::Instance()->setFileImported((childFileImported == Project::XML_TRUE) ? true : false);
    cProject::Instance()->setImagesDir(childImagesDir);
    cProject::Instance()->setLayersDir(childLayersDir);
    cProject::Instance()->setProjectFileName(cProject::Instance()->getProjectName() + Project::PROJ_FILE_EXT);

    // load imported images for backgrounds
    std::vector<QString> imgVect;
    if (childFileImported == Project::XML_TRUE) {

        QDomElement childImagesRoot = root.firstChildElement("images");
        if (!childImagesRoot.isNull()) {

            QDomElement childImages = childImagesRoot.firstChildElement("image");
            while (!childImages.isNull()) {
                imgVect.push_back(childImages.text());
                childImages = childImages.nextSiblingElement("image");
            }
        }
    }
    cProject::Instance()->setImages(imgVect);

    // load imported layers
    std::vector<QString> layers;
    QDomElement childLayersRoot = root.firstChildElement("layers");
    if (!childLayersRoot.isNull()) {

        QDomElement childLayers = childLayersRoot.firstChildElement("layer");
        while (!childLayers.isNull()) {
            layers.push_back(childLayers.text());
            childLayers = childLayers.nextSiblingElement("layer");
        }
    }
    cProject::Instance()->setLayers(layers);

    return true;
}