#include "StudySettingsDialog.h"

StudySettingsDialog::StudySettingsDialog(QWidget *parent):
    QDialog(parent)
    {
    initData();
    createUi();
    updateControls();
    }

void StudySettingsDialog::initData()
    {
    settings = *StudySettings::inst();
    }

void StudySettingsDialog::createUi()
{
    createControls();
    setLayout(createMainLayout());
    setWindowTitle(tr("Study settings"));
}

void StudySettingsDialog::createControls()
{
    dayShiftBox = createSpinBox(0, 12);
    newCardsShareBox = createSpinBox(1, 99);
    randomnessBox = createSpinBox(1, 99);
    cardsDayLimitBox = createSpinBox(1, 500);
    newCardsDayLimitBox = createSpinBox(0, 200);
    limitForAddingNewCardsBox = createSpinBox(20, 500);
    showRandomlyCB = new QCheckBox(tr("Add new cards in random order"));
    createButtonBox();
}

QSpinBox* StudySettingsDialog::createSpinBox(int min, int max)
{
    QSpinBox* spinBox = new QSpinBox;
    spinBox->setMinimum(min);
    spinBox->setMaximum(max);
    return spinBox;
}

void StudySettingsDialog::createButtonBox()
{
    buttonBox = new QDialogButtonBox(
        QDialogButtonBox::Ok | QDialogButtonBox::Cancel |
        QDialogButtonBox::RestoreDefaults, Qt::Horizontal);
    connect(buttonBox, SIGNAL(accepted()), this, SLOT(accept()));
    connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));
    connect(buttonBox, SIGNAL(clicked(QAbstractButton*)),
        SLOT(dialogButtonClicked(QAbstractButton*)));
}

QBoxLayout* StudySettingsDialog::createMainLayout()
{
    QHBoxLayout* upperPaddedLt = new QHBoxLayout;
    upperPaddedLt->addLayout(createUpperLayout());
    upperPaddedLt->addStretch();

    QVBoxLayout* mainLt = new QVBoxLayout;
    mainLt->addLayout(upperPaddedLt);
    mainLt->addWidget(showRandomlyCB);
    mainLt->addWidget(createLimitsGroup());
    mainLt->addWidget(buttonBox);
    return mainLt;
}

QGridLayout* StudySettingsDialog::createUpperLayout()
{
    QGridLayout* layout = new QGridLayout;
    int row = 0;
    addUpperGridLine(layout, row++, tr("Day starts at, o'clock:"), dayShiftBox);
    addUpperGridLine(layout, row++, tr("Share of new cards:"), newCardsShareBox, "%");
    addUpperGridLine(layout, row++, tr("Repetition interval randomness:"), randomnessBox, "%");
    return layout;
}

void StudySettingsDialog::addUpperGridLine(QGridLayout* layout, int row, const QString& label,
        QWidget* widget, const QString& unitLabel)
{
    QLabel* labelWidget = new QLabel(label);
    layout->addWidget(labelWidget, row, 0);
    layout->addWidget(widget, row, 1);
    layout->addWidget(new QLabel(unitLabel), row, 2);
}

QGroupBox* StudySettingsDialog::createLimitsGroup()
{
    QGridLayout* layout = new QGridLayout;
    layout->setColumnStretch(0, 1);
    int row = 0;
    addLimitsGridLine(layout, row++, tr("Day reviews limit:"), cardsDayLimitBox);
    addLimitsGridLine(layout, row++, tr("Day limit of new cards:"), newCardsDayLimitBox);
    addLimitsGridLine(layout, row++,
        tr("Don't add new cards after scheduled cards threshold:"),
        limitForAddingNewCardsBox);
    QGroupBox* group = new QGroupBox(tr("Limits"));
    group->setLayout(layout);
    return group;
}

void StudySettingsDialog::addLimitsGridLine(QGridLayout* layout, int row, const QString& label,
        QWidget* widget)
{
    QLabel* labelWidget = new QLabel(label);
    labelWidget->setWordWrap(true);
    layout->addWidget(labelWidget, row, 0);
    layout->addWidget(widget, row, 1);
}

const StudySettings StudySettingsDialog::getSettings()
{
    settings.showRandomly = showRandomlyCB->isChecked();
    settings.newCardsShare = newCardsShareBox->value() / 100.;
    settings.schedRandomness = randomnessBox->value() / 100.;
    settings.cardsDayLimit = cardsDayLimitBox->value();
    settings.newCardsDayLimit = newCardsDayLimitBox->value();
    settings.limitForAddingNewCards = limitForAddingNewCardsBox->value();
    settings.dayShift = dayShiftBox->value();
    return settings;
}

void StudySettingsDialog::updateControls()
{
    showRandomlyCB->setChecked( settings.showRandomly );
    newCardsShareBox->setValue( settings.newCardsShare * 100 );
    randomnessBox->setValue( settings.schedRandomness * 100 );
    cardsDayLimitBox->setValue( settings.cardsDayLimit );
    newCardsDayLimitBox->setValue( settings.newCardsDayLimit );
    limitForAddingNewCardsBox->setValue(settings.limitForAddingNewCards);
    dayShiftBox->setValue( settings.dayShift );
}

void StudySettingsDialog::dialogButtonClicked( QAbstractButton* aButton )
    {
    if(buttonBox->buttonRole(aButton) == QDialogButtonBox::ResetRole)
        {
        settings = StudySettings();
        updateControls();
        }
    }