#include "coursestablemanager.h"

coursesTableManager::coursesTableManager(QTableWidget *ptr, user *usrPtr)
{
  this->gp = NULL;
  this->us = usrPtr;
  this->courseTBL = ptr;

  /*
     *  Initilizing Table
    */
  courseTBL->setRowCount(0);
  courseTBL->setColumnCount(COURSE_FIELDS);
  QStringList mz;
  mz << QObject::tr("Number") << QObject::tr("Year") << QObject::tr("Semester") << QObject::tr("Serial") << QObject::tr("Name") << QObject::tr("Type") << QObject::tr("Points") << QObject::tr("Hours") << QObject::tr("Grade") << QObject::tr("Additions");
  courseTBL->setHorizontalHeaderLabels(mz);
  courseTBL->verticalHeader()->setVisible(false);
  courseTBL->setSelectionMode(QAbstractItemView::SingleSelection);
  courseTBL->setShowGrid(true);
  courseTBL->setStyleSheet("QTableView {selection-background-color: red;}");

  /*
     *
    */
  graph = new gradegraph(NULL,gp);
}

coursesTableManager::~coursesTableManager()
{
  courseTBL = NULL;
  delete gp;
  gp = NULL;
}
/**
 * @brief coursesTableManager::insertJceCoursesIntoTable    phrasing the course list to rows in table
 */
void coursesTableManager::insertJceCoursesIntoTable()
{
  for (gradeCourse *c: *gp->getCourses())
    {
      if (us->getInfluenceCourseOnly())
        {
          if (isCourseInfluence(c))
            addRow(c);
        }
      else
        addRow(c);
    }
}
/**
 * @brief coursesTableManager::setCoursesList   creating courses list with given html page
 * @param html
 */
void coursesTableManager::setCoursesList(QString &html)
{
  if (gp != NULL)
    gp->~GradePage();
  gp = new GradePage(html);
}
/**
 * @brief coursesTableManager::changes  when user changes the table manually it updates it
 * @param change    string change
 * @param row       row index
 * @param col       col index
 * @return  if change has been done
 */
bool coursesTableManager::changes(QString change, int row, int col)
{

  bool isNumFlag = true;
  if (courseTBL->item(row,gradeCourse::CourseScheme::SERIAL) == NULL)
    return true;

  int serialCourse = courseTBL->item(row,gradeCourse::CourseScheme::SERIAL)->text().toInt();
  for (gradeCourse *c: *gp->getCourses())
    {
      if (c->getSerialNum() == serialCourse)
        {
          switch (col)
            {
            case (gradeCourse::CourseScheme::COURSE_NUMBER_IN_LIST):
              c->setCourseNumInList(change.toInt());
              break;
            case (gradeCourse::CourseScheme::YEAR):
              c->setYear(change.toInt());
              break;
            case (gradeCourse::CourseScheme::SEMESTER):
              c->setSemester(change.toInt());
              break;
            case (gradeCourse::CourseScheme::NAME):
              c->setName(change);
              break;
            case (gradeCourse::CourseScheme::TYPE):
              c->setType(change);
              break;
            case (gradeCourse::CourseScheme::POINTS):
              {
                change.toDouble(&isNumFlag);

                if (!isNumFlag)
                  {
                    courseTBL->item(row,col)->setText(QString::number(c->getPoints()));
                  }
                else
                  c->setPoints(change.toDouble());
                break;
              }
            case (gradeCourse::CourseScheme::HOURS):
              {
                change.toDouble(&isNumFlag);

                if (!isNumFlag)
                  {
                    courseTBL->item(row,col)->setText(QString::number(c->getHours()));
                  }
                else
                  c->setHours(change.toDouble());
                break;
              }
            case (gradeCourse::CourseScheme::GRADE):
              {
                change.toDouble(&isNumFlag);

                if (!isNumFlag)
                  {
                    courseTBL->item(row,col)->setText(QString::number(c->getGrade()));
                  }
                else
                  {
                    if ((change.toDouble() >= 0) && (change.toDouble() <= 100))
                      c->setGrade(change.toDouble());
                    else
                      courseTBL->item(row,col)->setText(QString::number(c->getGrade()));
                  }
                break;
              }
            case (gradeCourse::CourseScheme::ADDITION):
              c->setAdditions(change);
              break;
            }
          break;
        }
    }
  return isNumFlag;

}
/**
 * @brief coursesTableManager::addRow   adds row with given information
 * @param courseToAdd                   if exists, add its information to table
 */
void coursesTableManager::addRow(const gradeCourse *courseToAdd)
{
  int i=1,j=1;

  j = 0;
  QTableWidgetItem *number,*year,*semester,*serial,*name,*type,*points,*hours,*grade,*addition;
  const gradeCourse * c;
  if (courseToAdd != NULL)
    {
      c = courseToAdd;
      if (!isCourseAlreadyInserted(c->getSerialNum()))
        {
          courseTBL->setRowCount(courseTBL->rowCount() + 1);
          i = courseTBL->rowCount()-1;

          number = new QTableWidgetItem();
          number->setData(Qt::EditRole, c->getCourseNumInList());
          number->setFlags(number->flags() & ~Qt::ItemIsEditable);

          year = new QTableWidgetItem();
          year->setData(Qt::EditRole,c->getYear());
          year->setFlags(year->flags() & ~Qt::ItemIsEditable);

          semester = new QTableWidgetItem();
          semester->setData(Qt::EditRole,c->getSemester());
          semester->setFlags(semester->flags() & ~Qt::ItemIsEditable);

          serial = new QTableWidgetItem();
          serial->setData(Qt::EditRole,c->getSerialNum());
          serial->setFlags(serial->flags() & ~Qt::ItemIsEditable);

          name = new QTableWidgetItem();
          name->setData(Qt::EditRole,c->getName());
          name->setFlags(name->flags() & ~Qt::ItemIsEditable);

          type = new QTableWidgetItem();
          type->setData(Qt::EditRole, c->getType());
          type->setFlags(type->flags() & ~Qt::ItemIsEditable);

          points = new QTableWidgetItem();
          points->setData(Qt::EditRole, c->getPoints());
          points->setFlags(points->flags() & ~Qt::ItemIsEditable);

          hours = new QTableWidgetItem();
          hours->setData(Qt::EditRole, c->getHours());
          hours->setFlags(hours->flags() & ~Qt::ItemIsEditable);

          grade = new QTableWidgetItem();
          grade->setData(Qt::EditRole,c->getGrade());

          addition = new QTableWidgetItem();
          addition->setData(Qt::EditRole,c->getAddidtions());

          courseTBL->setItem(i,j++,number);
          courseTBL->setItem(i,j++,year);
          courseTBL->setItem(i,j++,semester);
          courseTBL->setItem(i,j++,serial);
          courseTBL->setItem(i,j++,name);
          courseTBL->setItem(i,j++,type);
          courseTBL->setItem(i,j++,points);
          courseTBL->setItem(i,j++,hours);
          courseTBL->setItem(i,j,grade);
          if(c->getGrade() < 55 && c->getGrade() != 0)
          {
              courseTBL->item(i, j)->setBackground(Qt::darkRed);
              courseTBL->item(i,j)->setTextColor(Qt::white);
          }
          else if(55 <= c->getGrade() && c->getGrade() < 70 )
          {
              courseTBL->item(i, j)->setBackground(Qt::darkYellow);
              courseTBL->item(i,j)->setTextColor(Qt::white);
          }
//          else if(70 < c->getGrade() && c->getGrade() <= 80 )
//              courseTBL->item(i, j)->setBackground(Qt::darkGreen);  //They Look Bad!!
//          else if(c->getGrade() > 80)
//              courseTBL->item(i, j)->setBackground(Qt::green);

          j++;

          courseTBL->setItem(i,j,addition);

        }
    }
  else
    {
      qCritical() << Q_FUNC_INFO << " no course to load!";
    }
  courseTBL->resizeColumnsToContents();

}
double coursesTableManager::getAvg()
{
  if (this->gp != NULL)
    return gp->getAvg();
  return 0;
}

void coursesTableManager::showGraph()
{
  if (gp != NULL)
    {
      qDebug() << Q_FUNC_INFO << " Graph Dialog Opened. gp != NULL";
      this->graph->showGraph(gp);
    }
}


void coursesTableManager::influnceCourseChanged(bool ignoreCourseStatus)
{
  if (ignoreCourseStatus)
    {
      int i = 0;
      while (i < courseTBL->rowCount())
        {
          if (courseTBL->item(i,gradeCourse::CourseScheme::POINTS)->text().compare("0") == 0)
            courseTBL->removeRow(i--);
          i++;
        }
    }
  else
    {
      if (this->gp != NULL)
        for (gradeCourse *c: *gp->getCourses())
          {
            if (!(isCourseAlreadyInserted(c->getSerialNum())))
              if (c->getPoints() == 0)
                addRow(c);
          }
    }

}

void coursesTableManager::clearTable()
{
  if (courseTBL->rowCount() == 0)
    return;

  int i = 0; //starting point
  while (courseTBL->rowCount() > i)
    {
      gp->removeCourse(courseTBL->item(i,gradeCourse::CourseScheme::SERIAL)->text());
      courseTBL->removeRow(i);
    }
  gp = NULL;
  courseTBL->repaint();
}

gradeCourse *coursesTableManager::getCourseByRow(int row)
{
  QString courseSerial = courseTBL->item(row,gradeCourse::CourseScheme::SERIAL)->text();
  for (gradeCourse *c: *gp->getCourses())
    {
      if (c->getSerialNum() == courseSerial.toDouble())
        return c;
    }
  return NULL;
}

bool coursesTableManager::isCourseAlreadyInserted(double courseID)
{
  int i;
  for (i = courseTBL->rowCount(); i >= 0; --i)
    {
      if (courseTBL->item(i,gradeCourse::CourseScheme::SERIAL) != NULL)
        {
          QString courseSerial = courseTBL->item(i,gradeCourse::CourseScheme::SERIAL)->text();
          if (QString::number(courseID) == courseSerial)
            return true;
        }
    }
  return false;
}

bool coursesTableManager::isCourseInfluence(const gradeCourse *courseToCheck)
{
  if (courseToCheck->getPoints() > 0)
    return true;
  return false;

}