/*
 * Copyright The WildFly Authors
 * SPDX-License-Identifier: Apache-2.0
 */

package org.jboss.as.test.clustering.cluster.singleton;

import static org.jboss.as.test.clustering.ClusterTestUtil.execute;

import java.net.URI;
import java.net.URL;
import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;

import jakarta.servlet.http.HttpServletResponse;

import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.jboss.arquillian.container.test.api.Deployment;
import org.jboss.arquillian.container.test.api.OperateOnDeployment;
import org.jboss.arquillian.container.test.api.TargetsContainer;
import org.jboss.arquillian.junit.Arquillian;
import org.jboss.arquillian.test.api.ArquillianResource;
import org.jboss.as.arquillian.api.ServerSetup;
import org.jboss.as.arquillian.container.ManagementClient;
import org.jboss.as.test.clustering.cluster.AbstractClusteringTestCase;
import org.jboss.as.test.clustering.cluster.singleton.servlet.TraceServlet;
import org.jboss.as.test.http.util.TestHttpClientUtils;
import org.jboss.as.test.shared.ManagementServerSetupTask;
import org.jboss.as.test.shared.TimeoutUtil;
import org.jboss.dmr.ModelNode;
import org.jboss.shrinkwrap.api.Archive;
import org.jboss.shrinkwrap.api.ShrinkWrap;
import org.jboss.shrinkwrap.api.spec.WebArchive;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;

/**
 * @author Paul Ferraro
 */
@RunWith(Arquillian.class)
@ServerSetup(SingletonDeploymentTestCase.ServerSetupTask.class)
public abstract class SingletonDeploymentTestCase extends AbstractClusteringTestCase {

    static final String SINGLETON_DEPLOYMENT_1 = "singleton-deployment-1";
    static final String SINGLETON_DEPLOYMENT_2 = "singleton-deployment-2";

    private static final String MODULE_NAME = SingletonDeploymentTestCase.class.getSimpleName();
    private static final String DEPLOYMENT_NAME = MODULE_NAME + ".war";

    @Deployment(name = DEPLOYMENT_1, managed = false, testable = false)
    @TargetsContainer(NODE_1)
    public static Archive<?> deploymentHelper1() {
        return createDeployment();
    }

    @Deployment(name = DEPLOYMENT_2, managed = false, testable = false)
    @TargetsContainer(NODE_2)
    public static Archive<?> deploymentHelper2() {
        return createDeployment();
    }

    private static Archive<?> createDeployment() {
        WebArchive war = ShrinkWrap.create(WebArchive.class, DEPLOYMENT_NAME);
        war.addPackage(TraceServlet.class.getPackage());
        return war;
    }

    public static final int DELAY = TimeoutUtil.adjust(5000);

    private final String moduleName;
    private final String deploymentName;

    SingletonDeploymentTestCase(String moduleName, String deploymentName) {
        this.moduleName = moduleName;
        this.deploymentName = deploymentName;
    }

    @Test
    public void test(
            @ArquillianResource @OperateOnDeployment(DEPLOYMENT_1) ManagementClient client1,
            @ArquillianResource @OperateOnDeployment(DEPLOYMENT_2) ManagementClient client2,
            @ArquillianResource(TraceServlet.class) @OperateOnDeployment(DEPLOYMENT_1) URL baseURL1,
            @ArquillianResource(TraceServlet.class) @OperateOnDeployment(DEPLOYMENT_2) URL baseURL2)
            throws Exception {

        this.deploy(SINGLETON_DEPLOYMENT_1);
        Thread.sleep(DELAY);
        this.deploy(SINGLETON_DEPLOYMENT_2);
        Thread.sleep(DELAY);

        String primaryProviderRequest = String.format("/subsystem=singleton/singleton-policy=default/deployment=%s:read-attribute(name=primary-provider)", this.deploymentName);
        String isPrimaryRequest = String.format("/subsystem=singleton/singleton-policy=default/deployment=%s:read-attribute(name=is-primary)", this.deploymentName);
        String getProvidersRequest = String.format("/subsystem=singleton/singleton-policy=default/deployment=%s:read-attribute(name=providers)", this.deploymentName);

        Assert.assertEquals(NODE_1, execute(client1, primaryProviderRequest).asStringOrNull());
        Assert.assertTrue(execute(client1, isPrimaryRequest).asBoolean(false));
        Assert.assertEquals(List.of(NODE_1, NODE_2), execute(client1, getProvidersRequest).asList().stream().map(ModelNode::asString).sorted().collect(Collectors.toList()));
        Assert.assertEquals(NODE_1, execute(client2, primaryProviderRequest).asStringOrNull());
        Assert.assertFalse(execute(client2, isPrimaryRequest).asBoolean(true));
        Assert.assertEquals(List.of(NODE_1, NODE_2), execute(client2, getProvidersRequest).asList().stream().map(ModelNode::asString).sorted().collect(Collectors.toList()));

        URI uri1 = TraceServlet.createURI(new URL(baseURL1.getProtocol(), baseURL1.getHost(), baseURL1.getPort(), "/" + this.moduleName + "/"));
        URI uri2 = TraceServlet.createURI(new URL(baseURL2.getProtocol(), baseURL2.getHost(), baseURL2.getPort(), "/" + this.moduleName + "/"));

        try (CloseableHttpClient client = TestHttpClientUtils.promiscuousCookieHttpClient()) {
            try (CloseableHttpResponse response = client.execute(new HttpGet(uri1))) {
                Assert.assertEquals(HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode());
            }

            try (CloseableHttpResponse response = client.execute(new HttpGet(uri2))) {
                Assert.assertEquals(HttpServletResponse.SC_NOT_FOUND, response.getStatusLine().getStatusCode());
            }

            this.undeploy(SINGLETON_DEPLOYMENT_1);

            Thread.sleep(DELAY);

            Assert.assertEquals(NODE_2, execute(client2, primaryProviderRequest).asStringOrNull());
            Assert.assertTrue(execute(client2, isPrimaryRequest).asBoolean(false));
            Assert.assertEquals(Collections.singletonList(NODE_2), execute(client2, getProvidersRequest).asList().stream().map(ModelNode::asString).collect(Collectors.toList()));

            try (CloseableHttpResponse response = client.execute(new HttpGet(uri1))) {
                Assert.assertEquals(HttpServletResponse.SC_NOT_FOUND, response.getStatusLine().getStatusCode());
            }

            try (CloseableHttpResponse response = client.execute(new HttpGet(uri2))) {
                Assert.assertEquals(HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode());
            }

            this.deploy(SINGLETON_DEPLOYMENT_1);

            Thread.sleep(DELAY);

            Assert.assertEquals(NODE_1, execute(client1, primaryProviderRequest).asStringOrNull());
            Assert.assertTrue(execute(client1, isPrimaryRequest).asBoolean(false));
            Assert.assertEquals(List.of(NODE_1, NODE_2), execute(client1, getProvidersRequest).asList().stream().map(ModelNode::asString).sorted().collect(Collectors.toList()));
            Assert.assertEquals(NODE_1, execute(client2, primaryProviderRequest).asStringOrNull());
            Assert.assertFalse(execute(client2, isPrimaryRequest).asBoolean(true));
            Assert.assertEquals(List.of(NODE_1, NODE_2), execute(client2, getProvidersRequest).asList().stream().map(ModelNode::asString).sorted().collect(Collectors.toList()));

            try (CloseableHttpResponse response = client.execute(new HttpGet(uri1))) {
                Assert.assertEquals(HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode());
            }

            try (CloseableHttpResponse response = client.execute(new HttpGet(uri2))) {
                Assert.assertEquals(HttpServletResponse.SC_NOT_FOUND, response.getStatusLine().getStatusCode());
            }

            this.undeploy(SINGLETON_DEPLOYMENT_2);

            Thread.sleep(DELAY);

            Assert.assertEquals(NODE_1, execute(client1, primaryProviderRequest).asStringOrNull());
            Assert.assertTrue(execute(client1, isPrimaryRequest).asBoolean(false));
            Assert.assertEquals(Collections.singletonList(NODE_1), execute(client1, getProvidersRequest).asList().stream().map(ModelNode::asString).collect(Collectors.toList()));

            try (CloseableHttpResponse response = client.execute(new HttpGet(uri1))) {
                Assert.assertEquals(HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode());
            }

            try (CloseableHttpResponse response = client.execute(new HttpGet(uri2))) {
                Assert.assertEquals(HttpServletResponse.SC_NOT_FOUND, response.getStatusLine().getStatusCode());
            }

            this.deploy(SINGLETON_DEPLOYMENT_2);

            Thread.sleep(DELAY);

            Assert.assertEquals(NODE_1, execute(client1, primaryProviderRequest).asStringOrNull());
            Assert.assertTrue(execute(client1, isPrimaryRequest).asBoolean(false));
            Assert.assertEquals(List.of(NODE_1, NODE_2), execute(client1, getProvidersRequest).asList().stream().map(ModelNode::asString).sorted().collect(Collectors.toList()));
            Assert.assertEquals(NODE_1, execute(client2, primaryProviderRequest).asStringOrNull());
            Assert.assertFalse(execute(client2, isPrimaryRequest).asBoolean(true));
            Assert.assertEquals(List.of(NODE_1, NODE_2), execute(client2, getProvidersRequest).asList().stream().map(ModelNode::asString).sorted().collect(Collectors.toList()));

            try (CloseableHttpResponse response = client.execute(new HttpGet(uri1))) {
                Assert.assertEquals(HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode());
            }

            try (CloseableHttpResponse response = client.execute(new HttpGet(uri2))) {
                Assert.assertEquals(HttpServletResponse.SC_NOT_FOUND, response.getStatusLine().getStatusCode());
            }
        } finally {
            this.undeploy(SINGLETON_DEPLOYMENT_1);
            Thread.sleep(DELAY);
            this.undeploy(SINGLETON_DEPLOYMENT_2);
            Thread.sleep(DELAY);
        }
    }

    public static class ServerSetupTask extends ManagementServerSetupTask {
        ServerSetupTask() {
            super(NODE_1_2, createContainerConfigurationBuilder()
                    .setupScript(createScriptBuilder()
                        .add("/subsystem=singleton/singleton-policy=default/election-policy=simple:write-attribute(name=name-preferences,value=%s)", List.of(NODE_1, NODE_2))
                        .build())
                    .tearDownScript(createScriptBuilder()
                        .add("/subsystem=singleton/singleton-policy=default/election-policy=simple:undefine-attribute(name=name-preferences)")
                        .build())
                    .build());
        }
    }
}
