#include "Lts/Common/LtsTimelineClassic/TimelineIndicator.h"

#include <QtWidgets/QApplication>
#include <gtest/gtest.h>

namespace LtsTimelineClassic
{

class TimelineIndicatorTest : public ::testing::Test
{
  protected:
    void SetUp() override
    {
        static int argc = 1;
        static char* argv[] = {const_cast<char*>("test")};
        if (!qApp)
        {
            m_app = std::make_unique<QApplication>(argc, argv);
        }
    }

    void TearDown() override
    {
        m_app.reset();
    }

  private:
    std::unique_ptr<QApplication> m_app;
};

TEST(TimelineIndicatorTest, ConstructorCreatesValidIndicator)
{
    QWidget parent;
    TimelineIndicator indicator(&parent);
    EXPECT_NO_THROW(indicator.update());
}

TEST(TimelineIndicatorTest, SlotZoomChangesIndex)
{
    QWidget parent;
    TimelineIndicator indicator(&parent);

    int initialIndex = indicator.zoomLevelComboBox()->currentIndex();
    indicator.slotZoom();

    // Zoom out should decrease index (if not already at 0)
    if (initialIndex > 0)
    {
        EXPECT_EQ(indicator.zoomLevelComboBox()->currentIndex(), initialIndex - 1);
    }
    else
    {
        EXPECT_EQ(indicator.zoomLevelComboBox()->currentIndex(), 0);
    }
}

TEST(TimelineIndicatorTest, SlotUnzoomChangesIndex)
{
    QWidget parent;
    TimelineIndicator indicator(&parent);

    int initialIndex = indicator.zoomLevelComboBox()->currentIndex();
    int maxIndex = indicator.zoomLevelComboBox()->count() - 1;

    // Set to a lower index to allow unzoom
    indicator.zoomLevelComboBox()->setCurrentIndex(1);
    indicator.slotUnzoom();

    EXPECT_EQ(indicator.zoomLevelComboBox()->currentIndex(), 2);
}

} // namespace LtsTimelineClassic