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questionsdatabase.cpp
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questionsdatabase.cpp
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#include "questionsdatabase.h"
#include <QFile>
#include <QMessageBox>
#include <QtCore>
QuestionsDatabase::QuestionsDatabase(QObject *parent) : QObject(parent)
{
}
void QuestionsDatabase::LoadDatabase(const QString &filename)
{
QFile file(filename);
if (file.open(QIODevice::ReadOnly | QIODevice::Text))
{
QTextStream stream(&file);
QString header = stream.readLine();
if (header == "#SmartDriller")
{
databaseFileName = filename;
data.clear();
QString line;
while (!stream.atEnd())
{
sQuestionData record;
line = stream.readLine();
if (line.length() == 0) break; // check if last line
record.question = line;
line = stream.readLine();
record.answer = line;
line = stream.readLine();
QStringList results = line.split(" ");
if (results.length() == 4)
{
record.badAnswers = results.at(0).toInt();
record.goodAnswers = results.at(1).toInt();
record.repeatPeriod = results.at(2).toInt();
record.lastGood = results.at(3).toInt();
}
data.append(record);
}
}
else
{
QMessageBox::critical(
nullptr, tr("File error"), tr("File %1 is not a SmartDriller database").arg(filename));
}
file.close();
}
else
{
QMessageBox::critical(
nullptr, tr("File error"), tr("Cannot open file %1 with database").arg(filename));
}
}
const QuestionsDatabase::sQuestionData &QuestionsDatabase::GetQuestion(int index) const
{
if (index < data.length())
{
return data[index];
}
}
void QuestionsDatabase::AddQuestion(const QuestionsDatabase::sQuestionData &record)
{
data.append(record);
SaveDatabase();
}
void QuestionsDatabase::UpdateQuestion(const QuestionsDatabase::sQuestionData &record, int index)
{
if (index < data.length())
{
data[index] = record;
SaveDatabase();
}
}
void QuestionsDatabase::SaveDatabase()
{
QFile file(databaseFileName);
if (file.open(QIODevice::WriteOnly | QIODevice::Text))
{
QTextStream stream(&file);
stream << "#SmartDriller" << endl;
for (int i = 0; i < data.length(); i++)
{
sQuestionData record = data.at(i);
stream << record.question << endl;
stream << record.answer << endl;
QString stats = QString("%1 %2 %3 %4")
.arg(record.badAnswers)
.arg(record.goodAnswers)
.arg(record.repeatPeriod)
.arg(record.lastGood);
stream << stats << endl;
}
}
file.close();
}