#include "eettemplate.h"

#include <QFile>
#include <QTextStream>

EetTemplate::EetTemplate(QObject *parent) : QObject(parent)
{
}

EetTemplate::EetTemplate(const QString &tmp, QObject *parent) : QObject(parent)
{
    QFile tmpFile(tmp);
    tmpFile.open(QFile::ReadOnly | QFile::Text);

    QTextStream stream(&tmpFile);
    m_template = stream.readAll();
}

QString EetTemplate::fillTemplate(EetRequest *request)
{
    return fillTemplateInternal(request, nullptr);
}

QString EetTemplate::fillTemplate(QMap<QString, QString> map)
{
    return fillTemplateInternal(nullptr, &map);
}

QString EetTemplate::fillTemplateInternal(EetRequest *request, QMap<QString, QString> *map)
{
    QString ret;
    QString phStart;

    if (request != nullptr)
    {
        phStart = "@{";
    }
    else
    {
        phStart = "${";
    }

    for (int i = 0; i < m_template.size(); i++)
    {
        QChar c = m_template[i];
        if (!m_template.mid(i).startsWith(phStart))
        {
            ret += c;
            continue;
        }

        int p = m_template.indexOf("}", i + 2);
        if (p < 0)
        {
            return ret;
        }

        QString var = m_template.mid(i + 2, p - i - 2);
        QString value;
        
        if (request != nullptr)
        {
            value = request->property(var.toStdString().c_str()).toString();
        }
        else
        {
            value = map->value(var, NULL_VAL);
        }

        if (value != NULL_VAL)
        {
            QString attrib = QString("%1=\"%2\"").arg(var, value);
            ret += attrib;
        }

        i = p;
    }

    return ret;
}