package jmri.jmrix.roco.z21;

import jmri.util.JUnitUtil;

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

/**
 * Tests for Z21CanReporter class.
 *
 * @author Paul Bender Copyright (C) 2016
 *
 */
public class Z21CanReporterTest extends jmri.implementation.AbstractRailComReporterTest {

    private Z21SystemConnectionMemo memo = null;
    private Z21InterfaceScaffold tc = null;

    @Test
    public void testRailComReply() {
        Z21CanReporter zr = (Z21CanReporter) r;
        byte msg[] = {(byte) 0x0E, (byte) 0x00, (byte) 0xC4, (byte) 0x00, (byte) 0xcd, (byte) 0xab, (byte) 0x01, (byte) 0x00, (byte) 0x01, (byte) 0x11, (byte) 0x01, (byte) 0x00, (byte) 0x00, (byte) 0x00};
        Z21Reply reply = new Z21Reply(msg, 14);
        zr.reply(reply);
        // Check that both CurrentReport and LastReport are not null
        Assert.assertNotNull("CurrentReport Object exists", r.getCurrentReport());
        Assert.assertNotNull("LastReport Object exists", r.getLastReport());
        // Check the value of both CurrentReport and LastReport
        Assert.assertEquals("CurrentReport equals LastReport", r.getLastReport(), r.getCurrentReport());

    }

    @Test
    public void testPropertyChangeAfterMessage() {
        currentReportSeen = false;
        lastReportSeen = false;
        Z21CanReporter zr = (Z21CanReporter) r;
        zr.addPropertyChangeListener(new TestReporterListener());
        byte msg[] = {(byte) 0x0E, (byte) 0x00, (byte) 0xC4, (byte) 0x00, (byte) 0xcd, (byte) 0xab, (byte) 0x01, (byte) 0x00, (byte) 0x01, (byte) 0x11, (byte) 0x01, (byte) 0x00, (byte) 0x00, (byte) 0x00};
        Z21Reply reply = new Z21Reply(msg, 14);
        zr.reply(reply);
        // Check that both CurrentReport and LastReport were seen
        Assert.assertTrue("CurrentReport seen", currentReportSeen);
        Assert.assertTrue("LastReport seen", lastReportSeen);

        currentReportSeen = false;
        lastReportSeen = false;
        byte msg2[] = {(byte) 0x0E, (byte) 0x00, (byte) 0xC4, (byte) 0x00, (byte) 0xcd, (byte) 0xab, (byte) 0x01, (byte) 0x00, (byte) 0x01, (byte) 0x11, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00};
        reply = new Z21Reply(msg2, 14);
        zr.reply(reply);
        // Check that both CurrentReport was seen
        Assert.assertTrue("CurrentReport seen after empty list", currentReportSeen);
        // and last Report was not seen
        Assert.assertFalse("LastReport seen after empty list", lastReportSeen);
    }

    @Test
    public void testCollectionAfterMessage() {
        Z21CanReporter zr = (Z21CanReporter) r;
        zr.addPropertyChangeListener(new TestReporterListener());
        byte msg[] = {(byte) 0x0E, (byte) 0x00, (byte) 0xC4, (byte) 0x00, (byte) 0xcd, (byte) 0xab, (byte) 0x01, (byte) 0x00, (byte) 0x01, (byte) 0x11, (byte) 0x01, (byte) 0x00, (byte) 0x00, (byte) 0x00};
        Z21Reply reply = new Z21Reply(msg, 14);
        zr.reply(reply);
        // Check that the collection has one element.
        Assert.assertEquals("Collection Size 1 after message", 1, zr.getCollection().size());
        Assert.assertEquals("Current Report = last entry", zr.getCurrentReport(), zr.getCollection().toArray()[0]);

        byte msg2[] = {(byte) 0x0E, (byte) 0x00, (byte) 0xC4, (byte) 0x00, (byte) 0xcd, (byte) 0xab, (byte) 0x01, (byte) 0x00, (byte) 0x01, (byte) 0x11, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00};
        reply = new Z21Reply(msg2, 14);
        zr.reply(reply);
        // Check that the collection wass cleared.
        Assert.assertEquals("Collection Size 0 after clear message", 0, zr.getCollection().size());
        Assert.assertTrue("Collection Empty", zr.getCollection().isEmpty());
        Assert.assertNull("Current Report Null", zr.getCurrentReport());
    }

    @Test
    public void testCollectionAfterMessageWith2Tags() {
        Z21CanReporter zr = (Z21CanReporter) r;
        zr.addPropertyChangeListener(new TestReporterListener());
        byte msg[] = {(byte) 0x0E, (byte) 0x00, (byte) 0xC4, (byte) 0x00, (byte) 0xcd, (byte) 0xab, (byte) 0x01, (byte) 0x00, (byte) 0x01, (byte) 0x11, (byte) 0x52, (byte) 0xCC, (byte) 0x1B, (byte) 0xCC};
        Z21Reply reply = new Z21Reply(msg, 14);
        zr.reply(reply);
        byte msg2[] = {(byte) 0x0E, (byte) 0x00, (byte) 0xC4, (byte) 0x00, (byte) 0xcd, (byte) 0xab, (byte) 0x01, (byte) 0x00, (byte) 0x01, (byte) 0x12, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00}; // end of list, but second pair.
        reply = new Z21Reply(msg2, 14);
        zr.reply(reply);
        // Check that the collection has two element.
        Assert.assertEquals("Collection Size 2 after message", 2, zr.getCollection().size());
        Assert.assertNotNull("Current Report NotNull", zr.getCurrentReport());
        Assert.assertEquals("Current Report = last entry", zr.getCurrentReport(), zr.getCollection().toArray()[1]);
        Assert.assertEquals("Current State", jmri.IdTag.SEEN, zr.getState());
        // Check that both CurrentReport and LastReport were seen by the listener
        Assert.assertTrue("CurrentReport seen", currentReportSeen);
        Assert.assertTrue("LastReport seen", lastReportSeen);

        currentReportSeen = false;
        lastReportSeen = false;

        byte msg3[] = {(byte) 0x0E, (byte) 0x00, (byte) 0xC4, (byte) 0x00, (byte) 0xcd, (byte) 0xab, (byte) 0x01, (byte) 0x00, (byte) 0x01, (byte) 0x11, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00};
        reply = new Z21Reply(msg3, 14);
        zr.reply(reply);
        // Check that the collection wass cleared.
        Assert.assertEquals("Collection Size 0 after clear message", 0, zr.getCollection().size());
        Assert.assertTrue("Collection Empty", zr.getCollection().isEmpty());
        Assert.assertNull("Current Report Null", zr.getCurrentReport());
        Assert.assertEquals("Current State", jmri.IdTag.UNSEEN, zr.getState());
        // Check that both CurrentReport was seen
        Assert.assertTrue("CurrentReport seen after empty list", currentReportSeen);
        // and last Report was not seen
        Assert.assertFalse("LastReport seen after empty list", lastReportSeen);
    }

    @Test
    public void testCollectionAfterMessageWith3Tags() {
        Z21CanReporter zr = (Z21CanReporter) r;
        zr.addPropertyChangeListener(new TestReporterListener());
        byte msg[] = {(byte) 0x0E, (byte) 0x00, (byte) 0xC4, (byte) 0x00, (byte) 0xcd, (byte) 0xab, (byte) 0x01, (byte) 0x00, (byte) 0x01, (byte) 0x11, (byte) 0x01, (byte) 0x00, (byte) 0x02, (byte) 0x00};
        Z21Reply reply = new Z21Reply(msg, 14);
        zr.reply(reply);
        byte msg2[] = {(byte) 0x0E, (byte) 0x00, (byte) 0xC4, (byte) 0x00, (byte) 0xcd, (byte) 0xab, (byte) 0x01, (byte) 0x00, (byte) 0x01, (byte) 0x12, (byte) 0x03, (byte) 0x00, (byte) 0x00, (byte) 0x00}; // end of list, but second pair.
        reply = new Z21Reply(msg2, 14);
        zr.reply(reply);
        // Check that the collection has two element.
        JUnitUtil.waitFor(() -> {
            return (zr.getCollection().size() > 2);
        },"collection size > 2");
        Assert.assertEquals("Collection Size 3 after message", 3, zr.getCollection().size());

        byte msg3[] = {(byte) 0x0E, (byte) 0x00, (byte) 0xC4, (byte) 0x00, (byte) 0xcd, (byte) 0xab, (byte) 0x01, (byte) 0x00, (byte) 0x01, (byte) 0x11, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00};
        reply = new Z21Reply(msg3, 14);
        zr.reply(reply);
        // Check that the collection wass cleared.
        Assert.assertEquals("Collection Size 0 after clear message", 0, zr.getCollection().size());
        Assert.assertTrue("Collection Empty", zr.getCollection().isEmpty());
    }

    @Override
    @BeforeEach
    public void setUp() {
        JUnitUtil.setUp();

        jmri.util.JUnitUtil.initDefaultUserMessagePreferences();
        memo = new Z21SystemConnectionMemo();
        tc = new Z21InterfaceScaffold();
        memo.setTrafficController(tc);
        r = new Z21CanReporter("ZRabcd:1", "hello world", memo);

    }

    @Override
    @AfterEach
    public void tearDown() {
        r = null;
        tc.terminateThreads();
        memo = null;
        tc = null;
        JUnitUtil.clearShutDownManager(); // clears "Writing IdTags" from DefaultIdTagManager
        JUnitUtil.tearDown();
    }

}