#include "../headers/linboosselectionrow.h"

LinboOsSelectionRow::LinboOsSelectionRow(LinboBackend* backend, QWidget *parent) : QWidget(parent)
{
    this->backend = backend;
    connect(this->backend, SIGNAL(stateChanged(LinboBackend::LinboState)), this, SLOT(handleLinboStateChanged(LinboBackend::LinboState)));

    this->showOnlySelectedButton = false;

    this->osButtonGroup = new QButtonGroup();
    this->osButtonGroup->setExclusive(true);

    for(LinboOs* os : backend->getOperatingSystems()) {
        LinboOsSelectButton* osButton = new LinboOsSelectButton("/icons/" + os->getIconName(), os, this->osButtonGroup, this);
        connect(osButton->button, SIGNAL(toggled(bool)), this, SLOT(handleButtonToggled(bool)));

        // auto select current OS
        if(this->backend->getCurrentOs() == os)
            osButton->button->setChecked(true);

        this->osButtons.append(osButton);
    }
}

void LinboOsSelectionRow::resizeAndPositionAllButtons() {
    int buttonWidth = this->width() / this->osButtonGroup->buttons().length();
    if(this->showOnlySelectedButton) {
        for(int i = 0; i < this->osButtons.length(); i++) {
            if(!this->osButtons[i]->button->isChecked())
                this->osButtons[i]->hide();
            else {
                QPropertyAnimation* moveAnimation = new QPropertyAnimation(this->osButtons[i], "geometry");
                moveAnimation->setEasingCurve(QEasingCurve::InOutQuad);
                moveAnimation->setDuration(400);
                moveAnimation->setStartValue(this->osButtons[i]->geometry());
                moveAnimation->setEndValue(QRect((this->width() - buttonWidth) / 2, 0, buttonWidth, this->height()));
                moveAnimation->start();
            }
        }
    }
    else {
        for(int i = 0; i < this->osButtons.length(); i++) {
            this->osButtons[i]->setGeometry(buttonWidth * i, 0, buttonWidth, this->height());
        }
    }
}

void LinboOsSelectionRow::handleButtonToggled(bool checked) {
    if(checked)
        this->backend->setCurrentOs(this->getSelectedOs());
}

LinboOs* LinboOsSelectionRow::getSelectedOs() {
    for(LinboOsSelectButton* button : this->osButtons) {
        if(button->button->isChecked())
            return button->getOs();
    }
    return nullptr;
}

void LinboOsSelectionRow::setShowOnlySelectedButton(bool value) {
    // find selected button
    // set its x so it is in the middle (animated)
    // set Opacity of all other buttons to 0 (animated)
    if(value == this->showOnlySelectedButton)
        return;

    this->showOnlySelectedButton = value;

    this->resizeAndPositionAllButtons();
}

void LinboOsSelectionRow::resizeEvent(QResizeEvent *event) {
    QWidget::resizeEvent(event);
    //qDebug() << "RESIZE EVENT: width: " << width() << " height: " << height();
    this->resizeAndPositionAllButtons();
}

void LinboOsSelectionRow::handleLinboStateChanged(LinboBackend::LinboState newState) {
    switch (newState) {
    case LinboBackend::Idle:
        this->setShowOnlySelectedButton(false);
        break;

    case LinboBackend::Starting:
    case LinboBackend::Syncing:
    case LinboBackend::Reinstalling:
        this->setShowOnlySelectedButton(true);
        break;

    default:
        break;
    }
}