package jmri.jmrit.swing.meter;

import java.awt.GraphicsEnvironment;

import jmri.InstanceManager;
import jmri.JmriException;
import jmri.Meter;
import jmri.MeterManager;
import jmri.implementation.DefaultMeter;
import jmri.implementation.MeterUpdateTask;
import jmri.util.JUnitUtil;
import jmri.util.ThreadingUtil;

import org.junit.Assume;
import org.junit.jupiter.api.*;

/**
 *
 * @author Paul Bender       Copyright (C) 2017
 * @author Andrew Crosland   Copyright (C) 2020
 * @author Daniel Bergqvist  Copyright (C) 2020
 */
public class MeterFrameTest extends jmri.util.JmriJFrameTestBase {

    @Test
    public void testVoltageChange1Digit() {
        Assume.assumeFalse(GraphicsEnvironment.isHeadless());
        runOnLayout(() -> {
            frame.initComponents();
            jmri.InstanceManager.getDefault(jmri.MeterManager.class)
                    .getNamedBeanSet().first()
                    .setCommandedAnalogValue(2.1f);
        });
    }

    @Test
    public void testVoltageChange2Digit() {
        Assume.assumeFalse(GraphicsEnvironment.isHeadless());
        runOnLayout(() -> {
            frame.initComponents();
            jmri.InstanceManager.getDefault(jmri.MeterManager.class)
                    .getNamedBeanSet().first()
                    .setCommandedAnalogValue(32.1f);
        });
    }

    @Test
    public void testVoltageChange3Digit() {
        Assume.assumeFalse(GraphicsEnvironment.isHeadless());
        runOnLayout(() -> {
            frame.initComponents();
            jmri.InstanceManager.getDefault(jmri.MeterManager.class)
                    .getNamedBeanSet().first()
                    .setCommandedAnalogValue(432.1f);
        });
    }

    @Test
    public void testVoltageChange4Digit() {
        Assume.assumeFalse(GraphicsEnvironment.isHeadless());
        runOnLayout(() -> {
            frame.initComponents();
            jmri.InstanceManager.getDefault(jmri.MeterManager.class)
                    .getNamedBeanSet().first()
                    .setCommandedAnalogValue(5432.1f);
        });
    }

    @BeforeEach
    @Override
    public void setUp() {
        JUnitUtil.setUp();
        JUnitUtil.resetProfileManager();
        
        Meter voltageMeter = new DefaultMeter.DefaultVoltageMeter("IVVoltageMeter", Meter.Unit.Milli, 0.0, 1000.0, 1.0, new MeterUpdateTask(-1) {
            @Override
            public void requestUpdateFromLayout() {
                // Do nothing
            }
        });
        
        InstanceManager.getDefault(MeterManager.class).register(voltageMeter);
        
        if (!GraphicsEnvironment.isHeadless()) {
            frame = new MeterFrame();
        }
    }

    @AfterEach
    @Override
    public void tearDown() {
        super.tearDown();
    }
    
    private void runOnLayout(RunnableWithException r) {
        ThreadingUtil.runOnLayout(() -> {
            try {
                r.run();
            } catch (JmriException e) {
                throw new RuntimeException(e);
            }
        });
    }

    private interface RunnableWithException {
        public void run() throws JmriException;
    }
    
    // private static final Logger log = LoggerFactory.getLogger(AmpMeterFrameTest.class);
}