package org.jboss.resteasy.test.response;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CompletableFuture;

import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.Invocation;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.Response;
import javax.ws.rs.sse.SseEventSource;

import org.jboss.arquillian.container.test.api.Deployment;
import org.jboss.arquillian.container.test.api.RunAsClient;
import org.jboss.arquillian.junit.Arquillian;
import org.jboss.logging.Logger;
import org.jboss.resteasy.test.response.resource.AsyncResponseCallback;
import org.jboss.resteasy.test.response.resource.AsyncResponseException;
import org.jboss.resteasy.test.response.resource.AsyncResponseExceptionMapper;
import org.jboss.resteasy.test.response.resource.PublisherResponseNoStreamResource;
import org.jboss.resteasy.utils.PortProviderUtil;
import org.jboss.resteasy.utils.TestUtil;
import org.jboss.shrinkwrap.api.Archive;
import org.jboss.shrinkwrap.api.asset.StringAsset;
import org.jboss.shrinkwrap.api.spec.WebArchive;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;

/**
 * @tpSubChapter Publisher response type
 * @tpChapter Integration tests
 * @tpSince RESTEasy 4.0
 */
@RunWith(Arquillian.class)
@RunAsClient
public class PublisherResponseNoStreamTest {

   Client client;

   private static final Logger logger = Logger.getLogger(PublisherResponseNoStreamTest.class);

   @Deployment
   public static Archive<?> deploy() {
      WebArchive war = TestUtil.prepareArchive(PublisherResponseNoStreamTest.class.getSimpleName());
      war.setManifest(new StringAsset("Manifest-Version: 1.0\n"
         + "Dependencies: org.jboss.resteasy.resteasy-rxjava2 services, org.reactivestreams\n"));
      return TestUtil.finishContainerPrepare(war, null, PublisherResponseNoStreamResource.class,
            AsyncResponseCallback.class, AsyncResponseExceptionMapper.class, AsyncResponseException.class);
   }

   private String generateURL(String path) {
      return PortProviderUtil.generateURL(path, PublisherResponseNoStreamTest.class.getSimpleName());
   }

   @Before
   public void setup() {
      client = ClientBuilder.newClient();
   }

   @After
   public void close() {
      client.close();
      client = null;
   }

   /**
    * @tpTestDetails Resource method returns Publisher<String>.
    * @tpSince RESTEasy 4.0
    */
   @Test
   public void testText() throws Exception
   {
      Invocation.Builder request = client.target(generateURL("/text")).request();
      Response response = request.get();
      String entity = response.readEntity(String.class);
      Assert.assertEquals(200, response.getStatus());
      Assert.assertTrue(entity.startsWith("[\"0-2\",\"1-2\""));
      Assert.assertTrue(entity.endsWith(",\"29-2\"]"));

      // make sure the completion callback was called with no error
      request = client.target(generateURL("/callback-called-no-error/text")).request();
      response = request.get();
      Assert.assertEquals(200, response.getStatus());
      response.close();
   }

   /**
    * @tpTestDetails Resource method returns Publisher<String>, throws exception immediately.
    * @tpSince RESTEasy 4.0
    */
   @Test
   public void testTextErrorImmediate() throws Exception
   {
      Invocation.Builder request = client.target(generateURL("/text-error-immediate")).request();
      Response response = request.get();
      String entity = response.readEntity(String.class);
      Assert.assertEquals(444, response.getStatus());
      Assert.assertEquals("Got it", entity);

      // make sure the completion callback was called with with an error
      request = client.target(generateURL("/callback-called-with-error/text-error-immediate")).request();
      response = request.get();
      Assert.assertEquals(200, response.getStatus());
      response.close();
   }

   /**
    * @tpTestDetails Resource method returns Publisher<String>, throws exception in stream.
    * @tpSince RESTEasy 4.0
    */
   @Test
   public void testTextErrorDeferred() throws Exception
   {
      Invocation.Builder request = client.target(generateURL("/text-error-deferred")).request();
      Response response = request.get();
      String entity = response.readEntity(String.class);
      Assert.assertEquals(444, response.getStatus());
      Assert.assertEquals("Got it", entity);

      // make sure the completion callback was called with with an error
      request = client.target(generateURL("/callback-called-with-error/text-error-deferred")).request();
      response = request.get();
      Assert.assertEquals(200, response.getStatus());
      response.close();
   }

   /**
    * @tpTestDetails Resource method returns Publisher<String>.
    * @tpSince RESTEasy 4.0
    */
   @Test
   public void testSse() throws Exception
   {
      WebTarget target = client.target(generateURL("/sse"));
      List<String> collector = new ArrayList<>();
      List<Throwable> errors = new ArrayList<>();
      CompletableFuture<Void> future = new CompletableFuture<Void>();
      SseEventSource source = SseEventSource.target(target).build();
      source.register(evt -> {
         String data = evt.readData(String.class);
         collector.add(data);
         if(collector.size() >= 2) {
            future.complete(null);
         }
      },
         t -> {
            logger.error(t.getMessage(), t);
            errors.add(t);
         },
         () -> {
            // bah, never called
            future.complete(null);
         });
      source.open();
      future.get();
      source.close();
      Assert.assertEquals(2, collector.size());
      Assert.assertEquals(0, errors.size());
      Assert.assertEquals("one", collector.get(0));
      Assert.assertEquals("two", collector.get(1));
   }

   /**
    * @tpTestDetails Resource method unsubscribes on close for infinite streams.
    * @tpSince RESTEasy 4.0
    */
   @Test
   public void testInfiniteStreamsSse() throws Exception
   {
      WebTarget target = client.target(generateURL("/sse-infinite"));
      List<String> collector = new ArrayList<>();
      List<Throwable> errors = new ArrayList<>();
      CompletableFuture<Void> future = new CompletableFuture<Void>();
      SseEventSource source = SseEventSource.target(target).build();
      source.register(evt -> {
         String data = evt.readData(String.class);
         collector.add(data);
         if(collector.size() >= 2) {
            future.complete(null);
         }
      }, t -> {
            logger.error(t);
            errors.add(t);
         }, () -> {
            // bah, never called
            future.complete(null);
         });
      source.open();
      future.get();
      source.close();
      Assert.assertEquals(2, collector.size());
      Assert.assertEquals(0, errors.size());
      Assert.assertEquals("one", collector.get(0));
      Assert.assertEquals("one", collector.get(1));

      close();
      setup();
      Thread.sleep(5000);
      Invocation.Builder request = client.target(generateURL("/infinite-done")).request();
      Response response = request.get();
      String entity = response.readEntity(String.class);
      Assert.assertEquals(200, response.getStatus());
      Assert.assertEquals("true", entity);
   }
}
