#include "gradePage.h"

GradePage::GradePage(QString html) : Page()
{
    courses = new std::list<gradeCourse*>();
    tempHtml = getString(html);
    coursesListInit(tempHtml);

}
GradePage::~GradePage()
{
    for(Course* c : *courses)
        delete c;
    delete courses;
}

void GradePage::removeCourse(QString courseSerialID)
{
    for(gradeCourse* c : *courses)
    {
        if (c->getSerialNum() == courseSerialID.toInt())
        {
            courses->remove(c);
            delete c;
            return;
        }
    }

}
void GradePage::coursesListInit(QString &linesTokinzedString)
{
    std::list<QString> stringHolder;
    QString temp;
    gradeCourse* cTemp = NULL;
    char* tok;
    char* textToTok = strdup(linesTokinzedString.toStdString().c_str());
    tok = strtok(textToTok,"\n");
    while (tok != NULL) //putting every line in a string holder before parsing it
    {
        temp = tok;
        stringHolder.push_back(temp);
        tok = strtok(NULL, "\n");
    }
    for (QString temp: stringHolder)
    {
        cTemp = lineToCourse(temp);
        if (cTemp != NULL)
            courses->push_back(cTemp);
    }
}
gradeCourse* GradePage::lineToCourse(QString line)
{
    gradeCourse *tempC = NULL;
    QString templinearray[COURSE_FIELDS];//[serial,name,type,points,hours,grade,additions]
    int serial,year,semester,courseNumInList;
    double points,hours,grade;
    QString name,type, additions;
    QString tempS = "";
    int i = 0;
    char* tok;
    char* cLine = strdup(line.toStdString().c_str());
    tok = strtok(cLine, "\t");
    while(tok != NULL)
    {
        tempS = tok;

        if (i == gradeCourse::CourseScheme::SERIAL) //we need to extract the serial manually
        {
            tempS = "";
            char *tokTemp;
            tokTemp = tok;
            while (!(isdigit((int)*tokTemp))) //getting to serial number starting pointer
                tokTemp++;

            while (isdigit((int)*tokTemp)) //serial number
            {
                tempS += QString(*tokTemp);
                tokTemp++;
            }
            templinearray[i] = tempS.trimmed();
            templinearray[i+1] = QString(tokTemp).trimmed();
            i +=2; //skipping on serial and course name
        }
        else
        {
            templinearray[i] = tempS.trimmed();
            i++;
        }

        if (i == COURSE_FIELDS)
            break;
        tok=strtok(NULL, "\t");
    }
    if (templinearray[0] == "") //empty parsing
    {
        qCritical() << Q_FUNC_INFO << "empty parsing";
        return NULL;
    }

    year = templinearray[gradeCourse::CourseScheme::YEAR].toInt();
    semester = templinearray[gradeCourse::CourseScheme::SEMESTER].toInt();
    courseNumInList = templinearray[gradeCourse::CourseScheme::COURSE_NUMBER_IN_LIST].toInt();
    serial = templinearray[gradeCourse::CourseScheme::SERIAL].toInt();

    name = templinearray[gradeCourse::CourseScheme::NAME];
    type = templinearray[gradeCourse::CourseScheme::TYPE];

    points = templinearray[gradeCourse::CourseScheme::POINTS].toDouble();
    hours = templinearray[gradeCourse::CourseScheme::HOURS].toDouble();

    if (isGradedYet(templinearray[gradeCourse::CourseScheme::GRADE]))
        grade = templinearray[gradeCourse::CourseScheme::GRADE].toDouble();
    else
        grade = NO_GRADE_YET;

    additions = templinearray[gradeCourse::CourseScheme::ADDITION];

    tempC = new gradeCourse(year,semester,courseNumInList,serial,name,type,points,hours,grade,additions);
    return tempC;
}

//checking if one of the chars inside grade is not a number
bool GradePage::isGradedYet(QString grade)
{
    if (strlen(grade.toStdString().c_str()) <= 1)
        return false;

    for (char c: grade.toStdString())
    {
        if (c == '\0')
            break;
        if (((!isdigit((int)c))  && (!isspace((int)c)))) //48 = 0, 57 = 9
            return false;

    }
    return true;
}
double GradePage::getAvg()
{
    double avg = 0;
    double points = 0;
    for(gradeCourse* c : *courses)
    {
        if ((c->getGrade() != 0))
        {
            avg += c->getGrade() * c->getPoints();
            points += c->getPoints();
        }
    }

    avg /= points;
    return avg;
}