File indexing completed on 2023-05-30 10:45:26

 /*
     SPDX-FileCopyrightText: 2008-2010 Peter Hedlund <peter.hedlund@kdemail.net>
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "kwqquizmodel.h"
 
 #include "blankanswer.h"
 #include "kwqsortfiltermodel.h"
 #include "kwqtablemodel.h"
 
 #include <QRandomGenerator>
 
 #include <KRandom>
 
 KWQQuizModel::KWQQuizModel(QObject *parent) : QSortFilterProxyModel(parent)
 {
     m_sourceModel = 0;
     m_currentQuestion = 0;
     setSortCaseSensitivity(Qt::CaseInsensitive);
     setFilterCaseSensitivity(Qt::CaseInsensitive);
     setFilterKeyColumn(-1);
     m_list.clear();
     m_errorList.clear();
     m_quizList.clear();
 }
 
 
 void KWQQuizModel::setFilterModel(KWQSortFilterModel * sourceModel)
 {
     m_sourceModel = sourceModel;
     QSortFilterProxyModel::setSourceModel(sourceModel);
 }
 
 KWQSortFilterModel * KWQQuizModel::sourceModel() const
 {
     return m_sourceModel;
 }
 
 bool KWQQuizModel::lessThan(const QModelIndex & left, const QModelIndex & right) const
 {
     return m_list[left.row()] < m_list[right.row()];
 }
 
 bool KWQQuizModel::filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const
 {
     QString text;
     text.clear();
     for (int i = 0 ; i < 2; i++)
         text.append(sourceModel()->data(sourceModel()->index(sourceRow, i, sourceParent), Qt::DisplayRole).toString());
 
     return !text.isEmpty();
 }
 
 
 int KWQQuizModel::column(int i)
 {
     int result  = 0;
     if (isOdd(m_quizMode))
         result = 1;
     if ((m_quizMode == 5) && qAbs(i) == i)
         result = 0;
     return result;
 }
 
 bool KWQQuizModel::atEnd()
 {
   return m_currentQuestion >= questionCount();
 }
 
 void KWQQuizModel::toNext()
 {
   ++m_currentQuestion;
 }
 
 bool KWQQuizModel::hasErrors()
 {
     if (m_quizType == Prefs::EnumStartSession::MultipleChoice)
         return m_errorList.count() > 2; //this is a hack until better multiple choice is written
     else
         return !m_errorList.isEmpty();
 }
 
 bool KWQQuizModel::init()
 {
     if (m_sourceModel == 0)
         return false;
 
     invalidate();
 
     //check if enough in list
     bool result = false;
     switch (m_quizType)  {
         case Prefs::EnumStartSession::Editor:
             //
             break;
         case Prefs::EnumStartSession::Flashcard:
             result = (rowCount(QModelIndex()) > 0);
             break;
         case Prefs::EnumStartSession::QA:
             result = (rowCount(QModelIndex()) > 0);
             break;
         case Prefs::EnumStartSession::MultipleChoice:
             result = (rowCount(QModelIndex()) > 2);
             break;
     }
 
     if (!result)
         return false;
 
     m_quizList.clear();
     for (int i = 0; i < rowCount(QModelIndex()); ++i) {
         m_quizList.append(i);
         if (m_quizMode == 5)
             m_quizList.append(-i);
     }
 
     activateBaseList();
     return true;
 }
 
 void KWQQuizModel::activateBaseList()
 {
     m_list.clear();
     m_errorList.clear();
     foreach(int l, m_quizList)
         m_list.append(l);
 
     if (m_quizMode > 2) {
         KRandom::shuffle(m_list, QRandomGenerator::global());
     };
 
     m_questionCount = m_list.count();
     m_currentQuestion = 0;
 }
 
 bool KWQQuizModel::checkAnswer(const QString & a)
 {
     bool result = false;
     QString ans = a;
 
     int row =  m_list.at(m_currentQuestion);
 
     QString tTemp = data(index(qAbs(row), column(row), QModelIndex()), Qt::DisplayRole).toString();
 
     tTemp = tTemp.simplified();
     ans = ans.simplified();
 
     if (m_quizType == Prefs::EnumStartSession::QA) {
         if (!m_correctBlank.isEmpty()) {
             QStringList la, ls;
             if (ans.indexOf(';') > 0)
                 ls = ans.split(';', Qt::SkipEmptyParts);
             else
                 ls.append(ans);
 
             if (m_correctBlank.indexOf(';') > 0)
                 la = m_correctBlank.split(';', Qt::SkipEmptyParts);
             else
                 la.append(m_correctBlank);
 
             result = (ls.count() == la.count());
             if (result) {
                 for (int counter = 0; counter < la.count(); counter++) {
                 result = (ls[counter].simplified() == la[counter].simplified());
                 if (!result)
                     break;
                 }
             }
         }
         else
         {
           result = (ans == tTemp);
         }
       }
       else
       {
         if (m_quizType == Prefs::EnumStartSession::MultipleChoice) {
             if (Prefs::enableBlanks()) {
                 tTemp.remove('[');
                 tTemp.remove(']');
             }
             result = (ans == tTemp);
         }
         else
         {
           result = (ans == tTemp);
         }
 
       }
       ///@todo currently the Leitner stuff crashes KWQ
       //QString tmpLeitner( m_doc->entry(li.oneOp())->leitnerBox() );
 
       if (!result) {
           //m_doc->entry(li.oneOp())->setLeitnerBox(m_doc->leitnerSystem()->wrongBox( tmpLeitner ));
           m_errorList.append(row);
       }
       //else
           //m_doc->entry(li.oneOp())->setLeitnerBox(m_doc->leitnerSystem()->correctBox( tmpLeitner ));
 
       return result;
 }
 
 
 QStringList KWQQuizModel::multiOptions()
 {
   QStringList ls;
   int a = -1;
   int b = -1;
 
   do
     a = QRandomGenerator::global()->bounded(m_questionCount);
   while(a == m_currentQuestion);
 
   do
     b = QRandomGenerator::global()->bounded(m_questionCount);
   while(b == m_currentQuestion || b == a);
 
   int row =  m_list.at(m_currentQuestion);
   int col  = column(row);
   if (col == 0)
     col = 0;
   else
     col = 1;
   ls.append(data(index(qAbs(row), col, QModelIndex()), Qt::DisplayRole).toString());
   row =  m_list.at(a);
   ls.append(data(index(qAbs(row), col, QModelIndex()), Qt::DisplayRole).toString());
   row =  m_list.at(b);
   ls.append(data(index(qAbs(row), col, QModelIndex()), Qt::DisplayRole).toString());
 
   if (Prefs::enableBlanks()) {
     for (int i = 0; i < ls.count(); i++) {
       ls[i].remove('[');
       ls[i].remove(']');
       }
   }
 
   KRandom::shuffle(ls, QRandomGenerator::global());
 
   return ls;
 }
 
 
 QString KWQQuizModel::quizIcon(QuizIcon ico)
 {
     QString s = QStringLiteral("question");
     int col = column(m_list.at(m_currentQuestion));
     if (ico == IconLeftCol) {
         if (col == 0)
             s = QStringLiteral("answer");
     }
 
     if (ico == IconRightCol) {
         if (col != 0)
             s = QStringLiteral("answer");
     }
     return s;
 }
 
 QString KWQQuizModel::yourAnswer(const QString &givenAnswer) const
 {
     return BlankAnswer::yourAnswerResult(givenAnswer, m_answerBlank);
 }
 
 
 QString KWQQuizModel::hint()
 {
     if (!m_correctBlank.isEmpty())
         return m_correctBlank;
     else
         return answer();
 }
 
 
 QString KWQQuizModel::question()
 {
     int row =  m_list.at(m_currentQuestion);
     int col  = column(row);
     if (col == 0)
         col = 1;
     else
         col = 0;
 
     QString s = data(index(qAbs(row), col, QModelIndex()), Qt::DisplayRole).toString();
 
     if (Prefs::enableBlanks()) {
         s.remove('[');
         s.remove(']');
     }
 
     if (m_quizType != Prefs::EnumStartSession::Flashcard && m_currentQuestion > 0)
         Q_EMIT checkingAnswer(m_list.at(m_currentQuestion - 1));
     else
         Q_EMIT checkingAnswer(row);
 
     return s;
 }
 
 QString KWQQuizModel::blankAnswer()
 {
     m_correctBlank.clear();
     m_answerBlank.clear();
 
     if (m_quizType == Prefs::EnumStartSession::QA && Prefs::enableBlanks()) {
         int row = m_list.at(m_currentQuestion);
         const QString input = data(index(qAbs(row), column(row), QModelIndex()), Qt::DisplayRole).toString();
 
         const BlankAnswer::BlankResult result = BlankAnswer::blankAnswer(input);
 
         m_answerBlank = result.blankedAnswer;
         m_correctBlank = result.correctAnswer;
     }
     return m_answerBlank;
 }
 
 QString KWQQuizModel::answer()
 {
     int row =  m_list.at(m_currentQuestion);
     QString s = data(index(qAbs(row), column(row), QModelIndex()), Qt::DisplayRole).toString();
 
     if (m_quizType == Prefs::EnumStartSession::QA) {
         if (Prefs::enableBlanks()) {
             s.replace('[', QLatin1String("<u>"));
             s.replace(']', QLatin1String("</u>"));
             s.prepend("<qt>");
             s.append("</qt>");
         }
     }
     else
     {
         if (Prefs::enableBlanks()) {
             s.remove('[');
             s.remove(']');
         }
     }
     return s;
 }
 
 
 QUrl KWQQuizModel::soundQuestion()
 {
     int row =  m_list.at(m_currentQuestion);
     int col = column(row);
     col == 0 ? col = 1 : col = 0;
  
     QUrl soundUrl = QUrl::fromLocalFile(data(index(qAbs(row), col, QModelIndex()), KWQTableModel::SoundRole).toString());
     return soundUrl;
 }
  
 
 QUrl KWQQuizModel::soundAnswer()
 {
     int row =  m_list.at(m_currentQuestion);
     QUrl soundUrl = QUrl::fromLocalFile(data(index(qAbs(row), column(row), QModelIndex()), KWQTableModel::SoundRole).toString());
     return soundUrl;
 }
 
 
 QPixmap KWQQuizModel::imageQuestion()
 {
     int row =  m_list.at(m_currentQuestion);
     int col = column(row);
     col == 0 ? col = 1 : col = 0;
 
     QUrl imageUrl = QUrl::fromLocalFile(data(index(qAbs(row), col, QModelIndex()), KWQTableModel::ImageRole).toString());
     return QPixmap(imageUrl.toLocalFile());
 }
 
 
 QPixmap KWQQuizModel::imageAnswer()
 {
     int row =  m_list.at(m_currentQuestion);
     QUrl imageUrl = QUrl::fromLocalFile(data(index(qAbs(row), column(row), QModelIndex()), KWQTableModel::ImageRole).toString());
     return QPixmap(imageUrl.toLocalFile());
 }
 
 
 QString KWQQuizModel::langQuestion()
 {
     if (column(m_list.at(m_currentQuestion)) == 1)
         return headerData(0, Qt::Horizontal, Qt::DisplayRole).toString();
     else
         return headerData(1, Qt::Horizontal, Qt::DisplayRole).toString();
 }
 
 
 QString KWQQuizModel::langAnswer()
 {
     if (column(m_list.at(m_currentQuestion)) == 0)
         return headerData(0, Qt::Horizontal, Qt::DisplayRole).toString();
     else
         return headerData(1, Qt::Horizontal, Qt::DisplayRole).toString();
 }
 
 
 QString KWQQuizModel::kbAnswer()
 {
     int col = column(m_list.at(m_currentQuestion));
     QString result;
 
     if (col == 0)
         return headerData(0, Qt::Horizontal, KWQTableModel::KeyboardLayoutRole).toString();
     if (col == 1)
         return headerData(1, Qt::Horizontal, KWQTableModel::KeyboardLayoutRole).toString();
 
     return result;
 }
 
 
 void KWQQuizModel::removeLastError()
 {
     m_errorList.removeLast();
 }
 
 
 int KWQQuizModel::questionCount()
 {
     return m_questionCount;
 }
 
 
 void KWQQuizModel::finish()
 {
     Q_EMIT checkingAnswer(-1);
 }
 
 
 void KWQQuizModel::setQuizType(Prefs::EnumStartSession::type qt)
 {
     m_quizType = qt;
 }
 
 
 void KWQQuizModel::setQuizMode(int qm)
 {
     m_quizMode = qm;
 }
 
 
 void KWQQuizModel::activateErrorList()
 {
     m_list.clear();
     foreach(int i, m_errorList)
         m_list.append(i);
 
     m_errorList.clear();
     m_questionCount = m_list.count();
     m_currentQuestion = 0;
 }
 
 inline bool KWQQuizModel::isOdd(int value) const { return value & 0x1; }