#include <QLabel>
#include <QFontDialog>

#include "GraphOptionsWidget.h"
#include "ui_GraphOptionsWidget.h"

#include "PreferencesDialog.h"

#include "common/Helpers.h"
#include "common/Configuration.h"

GraphOptionsWidget::GraphOptionsWidget(PreferencesDialog *dialog)
    : QDialog(dialog),
      ui(new Ui::GraphOptionsWidget)
{
    ui->setupUi(this);
    ui->checkTransparent->setChecked(Config()->getBitmapTransparentState());
    ui->bitmapGraphScale->setValue(Config()->getBitmapExportScaleFactor()*100.0);
    updateOptionsFromVars();

    connect<void(QDoubleSpinBox::*)(double)>(ui->bitmapGraphScale, (&QDoubleSpinBox::valueChanged), this, &GraphOptionsWidget::bitmapGraphScaleValueChanged);
    connect(ui->checkTransparent, &QCheckBox::stateChanged, this, &GraphOptionsWidget::checkTransparentStateChanged);

    connect(Core(), &CutterCore::graphOptionsChanged, this, &GraphOptionsWidget::updateOptionsFromVars);
    QSpinBox* graphSpacingWidgets[] = {
        ui->horizontalEdgeSpacing, ui->horizontalBlockSpacing,
        ui->verticalEdgeSpacing, ui->verticalBlockSpacing
    };
    for (auto widget: graphSpacingWidgets) {
        connect<void(QSpinBox::*)(int)>(widget, &QSpinBox::valueChanged,
                                        this, &GraphOptionsWidget::layoutSpacingChanged);
    }
}

GraphOptionsWidget::~GraphOptionsWidget() {}


void GraphOptionsWidget::updateOptionsFromVars()
{
    qhelpers::setCheckedWithoutSignals(ui->graphOffsetCheckBox, Config()->getConfigBool("graph.offset"));
    ui->maxColsSpinBox->blockSignals(true);
    ui->maxColsSpinBox->setValue(Config()->getGraphBlockMaxChars());
    ui->maxColsSpinBox->blockSignals(false);
    auto blockSpacing = Config()->getGraphBlockSpacing();
    ui->horizontalBlockSpacing->setValue(blockSpacing.x());
    ui->verticalBlockSpacing->setValue(blockSpacing.y());
    auto edgeSpacing = Config()->getGraphEdgeSpacing();
    ui->horizontalEdgeSpacing->setValue(edgeSpacing.x());
    ui->verticalEdgeSpacing->setValue(edgeSpacing.y());
}


void GraphOptionsWidget::triggerOptionsChanged()
{
    disconnect(Core(), &CutterCore::graphOptionsChanged, this, &GraphOptionsWidget::updateOptionsFromVars);
    Core()->triggerGraphOptionsChanged();
    connect(Core(), &CutterCore::graphOptionsChanged, this, &GraphOptionsWidget::updateOptionsFromVars);
}

void GraphOptionsWidget::on_maxColsSpinBox_valueChanged(int value)
{
    Config()->setGraphBlockMaxChars(value);
    triggerOptionsChanged();
}

void GraphOptionsWidget::on_graphOffsetCheckBox_toggled(bool checked)
{
    Config()->setConfig("graph.offset", checked);
    emit Core()->asmOptionsChanged();
    triggerOptionsChanged();
}

void GraphOptionsWidget::checkTransparentStateChanged(int checked)
{
    Config()->setBitmapTransparentState(checked);
}

void GraphOptionsWidget::bitmapGraphScaleValueChanged(double value)
{
    double value_decimal = value/(double)100.0;
    Config()->setBitmapExportScaleFactor(value_decimal);
}

void GraphOptionsWidget::layoutSpacingChanged()
{
    QPoint blockSpacing{ui->horizontalBlockSpacing->value(), ui->verticalBlockSpacing->value()};
    QPoint edgeSpacing{ui->horizontalEdgeSpacing->value(), ui->verticalEdgeSpacing->value()};
    Config()->setGraphSpacing(blockSpacing, edgeSpacing);
    triggerOptionsChanged();
}