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package org.richfaces.tests.metamer.ftest.a4jPush;

import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertTrue;

import java.util.List;

import org.jboss.arquillian.graphene.Graphene;
import org.joda.time.DateTime;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.interactions.Action;
import org.openqa.selenium.support.FindBy;
import org.richfaces.tests.configurator.unstable.annotation.Unstable;
import org.richfaces.tests.metamer.bean.a4j.A4JPushBean;
import org.richfaces.tests.metamer.ftest.AbstractWebDriverTest;
import org.richfaces.tests.metamer.ftest.extension.attributes.coverage.annotations.CoversAttributes;
import org.richfaces.tests.metamer.ftest.extension.configurator.templates.annotation.Templates;
import org.testng.annotations.Test;

import com.google.common.collect.Lists;

/**
 * Test for simple push example faces/components/a4jPush/simple.xhtml
 *
 * @author <a href="mailto:jjamrich@redhat.com">Jan Jamrich</a>
 * @author <a href="mailto:jstefek@redhat.com">Jiri Stefek</a>
 */
@Unstable
public class TestSimplePush extends AbstractWebDriverTest {

    private static final int NUMBER_OF_TESTED_UPDATES = 3;
    private static final DateTimeFormatter TIME_PARSER = DateTimeFormat.forPattern(A4JPushBean.DATE_PATTERN);
    private static final int TOLERANCE = 2;// s
    private static final int UPDATE_INTERVAL = 5;// s

    @FindBy(css = "div[id$=messagePanel] span.timestamp")
    private WebElement timestamp;

    @Override
    public String getComponentTestPagePath() {
        return "a4jPush/simple.xhtml";
    }

    @Test
    @Templates("plain")
    @CoversAttributes("onerror")
    public void testOnerror() {
        testFireEvent("onerror", new Action() {
            @Override
            public void perform() {
                // wait for first received message from server
                Graphene.waitModel().until().element(timestamp).is().present();
                // trigger onerror
                executeJS("RichFaces.push._errorCallback('Intentional error!');");
            }
        });
    }

    @Test
    @CoversAttributes({ "address", "ondataavailable" })
    public void testPushComponentExists() {
        List<String> timeStampsString = Lists.newArrayList();
        String previousTimeStampText;
        Graphene.waitModel().until().element(timestamp).is().present();
        for (int i = 0; i < NUMBER_OF_TESTED_UPDATES; ++i) {
            previousTimeStampText = timestamp.getText();
            timeStampsString.add(previousTimeStampText.replaceAll("[\\[|\\]]", ""));
            Graphene.waitModel().until().element(timestamp).text().not().equalTo(previousTimeStampText);
        }

        List<DateTime> times = Lists.newArrayList();
        for (String string : timeStampsString) {
            times.add(TIME_PARSER.parseDateTime(string));
        }
        DateTime prevTime = null;
        for (DateTime dateTime : times) {
            if (prevTime != null) {
                assertTrue(prevTime.isBefore(dateTime));
                long millis = dateTime.getMillis() - prevTime.getMillis();
                assertEquals(millis / 1000.0, UPDATE_INTERVAL, TOLERANCE, "The update interval is not in tolerance.");
            }
            prevTime = dateTime;
        }
    }
}