package org.jboss.resteasy.test.core.interceptors;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;

import javax.ws.rs.InternalServerErrorException;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.Entity;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Variant;

import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
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.resteasy.client.jaxrs.ProxyBuilder;
import org.jboss.resteasy.client.jaxrs.ResteasyClient;
import org.jboss.resteasy.plugins.interceptors.AcceptEncodingGZIPFilter;
import org.jboss.resteasy.plugins.interceptors.GZIPDecodingInterceptor;
import org.jboss.resteasy.plugins.interceptors.GZIPEncodingInterceptor;
import org.jboss.resteasy.spi.HttpResponseCodes;
import org.jboss.resteasy.test.core.interceptors.resource.GzipIGZIP;
import org.jboss.resteasy.test.core.interceptors.resource.GzipProxy;
import org.jboss.resteasy.test.core.interceptors.resource.GzipResource;
import org.jboss.resteasy.test.core.interceptors.resource.Pair;
import org.jboss.resteasy.util.ReadFromStream;
import org.jboss.resteasy.utils.PortProviderUtil;
import org.jboss.resteasy.utils.TestUtil;
import org.jboss.shrinkwrap.api.Archive;
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 Interceptors
 * @tpChapter Integration tests
 * @tpTestCaseDetails Gzip compression tests
 * @tpSince RESTEasy 3.0.16
 */
@RunWith(Arquillian.class)
@RunAsClient
public class GzipTest {

   static ResteasyClient client;
   protected static final Logger logger = LogManager.getLogger(GzipTest.class.getName());

   @Deployment
   public static Archive<?> deploySimpleResource() {
      WebArchive war = TestUtil.prepareArchive(GzipTest.class.getSimpleName());
      war.addClasses(GzipIGZIP.class, Pair.class);
      // Activate gzip compression:
      war.addAsManifestResource("org/jboss/resteasy/test/client/javax.ws.rs.ext.Providers", "services/javax.ws.rs.ext.Providers");
      return TestUtil.finishContainerPrepare(war, null, GzipResource.class);
   }

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

   @Before
   public void init() {
      client = (ResteasyClient)ClientBuilder.newBuilder()
               .register(AcceptEncodingGZIPFilter.class)
               .register(GZIPDecodingInterceptor.class)
               .register(GZIPEncodingInterceptor.class)
               .build();
   }

   @After
   public void after() throws Exception {
      client.close();
   }

   /**
    * @tpTestDetails Check ByteArrayOutputStream of gzip data
    * @tpSince RESTEasy 3.0.16
    */
   @Test
   public void testRawStreams() throws Exception {
      ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
      GZIPEncodingInterceptor.EndableGZIPOutputStream outputStream = new GZIPEncodingInterceptor.EndableGZIPOutputStream(byteStream);
      outputStream.write("hello world".getBytes());
      outputStream.finish();
      outputStream.close();

      byte[] bytes1 = byteStream.toByteArray();
      logger.info("Output stream length: " + bytes1.length);
      logger.info("Output stream value:" + new String(bytes1));
      ByteArrayInputStream bis = new ByteArrayInputStream(bytes1);
      GZIPDecodingInterceptor.FinishableGZIPInputStream is = new GZIPDecodingInterceptor.FinishableGZIPInputStream(bis, false);
      byte[] bytes = ReadFromStream.readFromStream(1024, is);
      is.finish();
      String str = new String(bytes);
      Assert.assertEquals("Output stream has wrong content", "hello world", str);


   }

   /**
    * @tpTestDetails Check ProxyFactory
    * @tpSince RESTEasy 3.0.16
    */
   @Test
   public void testProxy() throws Exception {
      GzipIGZIP proxy = client.target(generateURL("")).proxy(GzipIGZIP.class);
      Assert.assertEquals("Proxy return wrong content", "HELLO WORLD", proxy.getText());
      Assert.assertEquals("Proxy return wrong content", "HELLO WORLD", proxy.getGzipText());

      // resteasy-651
      try {
         proxy.getGzipErrorText();
         Assert.fail("Proxy is unreachable");
      } catch (InternalServerErrorException failure) {
         Assert.assertEquals(HttpResponseCodes.SC_INTERNAL_SERVER_ERROR, failure.getResponse().getStatus());
         String txt = failure.getResponse().readEntity(String.class);
         Assert.assertEquals("Response contain wrong content", "Hello", txt);
      }
   }

   /**
    * @tpTestDetails Check length of content. Gzip data should have at least 11 bytes
    * @tpSince RESTEasy 3.0.16
    */
   @Test
   public void testContentLength() throws Exception {
      {
         Response response = client.target(generateURL("/text")).request().get();
         Assert.assertEquals("Response has wrong content", "HELLO WORLD", response.readEntity(String.class));
         String cl = response.getHeaderString("Content-Length");
         if (cl != null) {
            // make sure the content length is greater than 11 because this will be a gzipped encoding
            Assert.assertTrue("Content length should be greater than 11 because this will be a gzipped encoding", Integer.parseInt(cl) > 11);
         }
      }
      {
         Response response = client.target(generateURL("/bytes")).request().get();
         String cl = response.getHeaderString("Content-Length");
         if (cl != null) {
            // make sure the content length is greater than 11 because this will be a gzipped encoding
            int integerCl = Integer.parseInt(cl);
            logger.info("Content-Length: " + integerCl);
            Assert.assertTrue("Content length should be greater than 11 because this will be a gzipped encoding", integerCl > 11);
         }
         Assert.assertEquals("Response contains wrong content", "HELLO WORLD", response.readEntity(String.class));
      }
   }

   /**
    * @tpTestDetails Check wrong URL
    * @tpSince RESTEasy 3.0.16
    */
   @Test
   public void testRequestError() throws Exception {
      Response response = client.target(generateURL("/error")).request().get();
      Assert.assertEquals(HttpResponseCodes.SC_METHOD_NOT_ALLOWED, response.getStatus());
      response.close();
   }

   /**
    * @tpTestDetails Check stream from PUT request
    * @tpSince RESTEasy 3.0.16
    */
   @Test
   public void testPutStream() throws Exception {
      Response response = client.target(generateURL("/stream")).request().header("Content-Encoding", "gzip")
            .put(Entity.entity("hello world", "text/plain"));
      Assert.assertEquals(HttpResponseCodes.SC_NO_CONTENT, response.getStatus());
      response.close();
   }

   /**
    * @tpTestDetails Check text from PUT request
    * @tpSince RESTEasy 3.0.16
    */
   @Test
   public void testPutText() throws Exception {
      Response response = client.target(generateURL("/text")).request().header("Content-Encoding", "gzip")
            .put(Entity.entity("hello world", "text/plain"));
      Assert.assertEquals(HttpResponseCodes.SC_NO_CONTENT, response.getStatus());
      response.close();
   }

   /**
    * @tpTestDetails Check plain text response
    * @tpSince RESTEasy 3.0.16
    */
   @Test
   public void testRequestPlain() throws Exception {
      Response response = client.target(generateURL("/text")).request().get();
      Assert.assertEquals("HELLO WORLD", response.readEntity(String.class));

   }

   /**
    * @tpTestDetails Check encoded text response
    * @tpSince RESTEasy 3.0.16
    */
   @Test
   public void testRequestEncoded() throws Exception {
      Response response = client.target(generateURL("/encoded/text")).request().get();
      Assert.assertEquals("Response contains wrong content", "HELLO WORLD", response.readEntity(String.class));
   }

   /**
    * @tpTestDetails Test that it was zipped by running it through Apache HTTP Client which does not automatically unzip
    * @tpSince RESTEasy 3.0.16
    */
   @Test
   public void testWasZipped() throws Exception {
      CloseableHttpClient client = HttpClientBuilder.create().disableContentCompression().build();
      {
         HttpGet get = new HttpGet(generateURL("/encoded/text"));
         get.addHeader("Accept-Encoding", "gzip, deflate");
         HttpResponse response = client.execute(get);
         Assert.assertEquals(HttpResponseCodes.SC_OK, response.getStatusLine().getStatusCode());
         Assert.assertEquals("Wrong encoding format", "gzip", response.getFirstHeader("Content-Encoding").getValue());

         // test that it is actually zipped
         String entity = EntityUtils.toString(response.getEntity());
         logger.info("Entity: " + entity);
         Assert.assertNotSame("Wrong entity content", entity, "HELLO WORLD");
      }

      {
         HttpGet get = new HttpGet(generateURL("/text"));
         get.addHeader("Accept-Encoding", "gzip, deflate");
         HttpResponse response = client.execute(get);
         Assert.assertEquals(HttpResponseCodes.SC_OK, response.getStatusLine().getStatusCode());
         Assert.assertEquals("Wrong encoding format", "gzip", response.getFirstHeader("Content-Encoding").getValue());

         // test that it is actually zipped
         String entity = EntityUtils.toString(response.getEntity());
         Assert.assertNotSame("Wrong entity content", entity, "HELLO WORLD");
      }
   }

   /**
    * @tpTestDetails Test that if there is no accept-encoding: gzip header that result isn't encoded
    * @tpSince RESTEasy 3.0.16
    */
   @Test
   public void testWithoutAcceptEncoding() throws Exception {
      CloseableHttpClient client = HttpClientBuilder.create().build();
      HttpGet get = new HttpGet(generateURL("/encoded/text"));
      HttpResponse response = client.execute(get);
      Assert.assertEquals(HttpResponseCodes.SC_OK, response.getStatusLine().getStatusCode());
      Assert.assertNull(response.getFirstHeader("Content-Encoding"));

      // test that it is actually zipped
      String entity = EntityUtils.toString(response.getEntity());
      Assert.assertEquals("Response contains wrong content", entity, "HELLO WORLD");
   }

   /**
    * @tpTestDetails Send POST request with gzip encoded data using @GZIP annotation and client proxy framework
    * @tpInfo RESTEASY-1499
    * @tpSince RESTEasy 3.1.0
    */
   @Test
   public void testGzipPost() {
      GzipProxy gzipProxy = ProxyBuilder.builder(GzipProxy.class, client.target(generateURL(""))).build();
      Pair data = new Pair();
      data.setP1("first");
      data.setP2("second");

      Response response = gzipProxy.post(data);
      Assert.assertEquals("gzip", response.getHeaderString("Content-Encoding"));
      Assert.assertEquals(HttpResponseCodes.SC_OK, response.getStatus());
   }

   /**
    * @tpTestDetails Test exceeding default maximum size
    * @tpInfo RESTEASY-1484
    * @tpSince RESTEasy 3.1.0.Final
    */
   @Test
   public void testMaxDefaultSizeSending() throws Exception {
      byte[] b = new byte[10000001];
      Variant variant = new Variant(MediaType.APPLICATION_OCTET_STREAM_TYPE, "", "gzip");
      Response response = client.target(generateURL("/big/send")).request().post(Entity.entity(b, variant));
      Assert.assertEquals(HttpResponseCodes.SC_REQUEST_ENTITY_TOO_LARGE, response.getStatus());
      String message = response.readEntity(String.class);
      Assert.assertTrue(message.contains("RESTEASY003357"));
      Assert.assertTrue(message.contains("10000000"));
   }
}
