package org.jboss.resteasy.test.util;

import java.net.URI;
import java.net.URISyntaxException;
import java.util.Set;

import javax.ws.rs.core.Link;
import javax.ws.rs.core.Response;
import javax.ws.rs.ext.RuntimeDelegate;

import org.jboss.resteasy.core.ResteasyContext;
import org.jboss.resteasy.mock.MockHttpRequest;
import org.jboss.resteasy.specimpl.ResponseBuilderImpl;
import org.jboss.resteasy.spi.HttpRequest;
import org.jboss.resteasy.test.util.resource.ResponseBuilderRequest;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;

/**
 * @tpSubChapter Util tests
 * @tpChapter Unit tests
 * @tpTestCaseDetails Test for javax.ws.rs.core.Response#ResponseBuilder class.
 * @tpSince RESTEasy 3.0.16
 */
public class ResponseBuilderTest {
   private static final URI BASE_URI = URI.create("http://localhost/");
   private static final URI REQUEST_URI = URI.create("http://localhost/path/to/resource");
   private static final String ERROR_MSG = "ResponseBuilder works incorrectly";

   private Response.ResponseBuilder builder;

   @Before
   public void before() throws URISyntaxException {
      HttpRequest httpRequest = MockHttpRequest.create("GET", REQUEST_URI,
            BASE_URI);

      ResteasyContext.getContextDataMap().put(HttpRequest.class,
            httpRequest);

      builder = new ResponseBuilderImpl();
   }

   @After
   public void after() throws Exception {
      ResteasyContext.removeContextDataLevel();
   }

   /**
    * @tpTestDetails Complex test for all relevant functions of ResponseBuilder
    * @tpSince RESTEasy 3.0.16
    */
   @Test
   public void responseBuilderTest() {
      // testLocationSimple
      {
         Response r = builder.location(URI.create("/res")).build();
         String actualUri = r.getMetadata().getFirst("Location").toString();

         Assert.assertEquals(ERROR_MSG, "http://localhost/res", actualUri);
      }

      // testAllowed
      {
         Response response = Response.status(Response.Status.OK).allow("GET", "POST", "DELETE").build();
         Set<String> allowedMethods = response.getAllowedMethods();
         Assert.assertEquals(ERROR_MSG, allowedMethods.size(), 3);
         Assert.assertTrue(ERROR_MSG, allowedMethods.contains("GET"));
         Assert.assertTrue(ERROR_MSG, allowedMethods.contains("POST"));
         Assert.assertTrue(ERROR_MSG, allowedMethods.contains("DELETE"));
      }

      // testLocationPath
      {
         Response r = builder.location(URI.create("/a/res")).build();
         String actualUri = r.getMetadata().getFirst("Location").toString();

         Assert.assertEquals(ERROR_MSG, "http://localhost/a/res", actualUri);
      }

      // testLocationQueryString
      {
         Response r = builder.location(URI.create("/res?query")).build();
         String actualUri = r.getMetadata().getFirst("Location").toString();

         Assert.assertEquals(ERROR_MSG, "http://localhost/res?query", actualUri);
      }

      // testLocationFragment
      {
         Response r = builder.location(URI.create("/res#frag")).build();
         String actualUri = r.getMetadata().getFirst("Location").toString();

         Assert.assertEquals(ERROR_MSG, "http://localhost/res#frag", actualUri);
      }

      // testContentLocationSimple
      {
         Response r = builder.contentLocation(URI.create("/res")).build();
         String actualUri = r.getMetadata().getFirst("Content-Location").toString();

         Assert.assertEquals(ERROR_MSG, "http://localhost/res", actualUri);
      }

      // testContentLocationPath
      {
         Response r = builder.contentLocation(URI.create("/a/res")).build();
         String actualUri = r.getMetadata().getFirst("Content-Location").toString();

         Assert.assertEquals(ERROR_MSG, "http://localhost/a/res", actualUri);
      }

      // testContentLocationQueryString
      {
         Response r = builder.location(URI.create("/res?query")).build();
         String actualUri = r.getMetadata().getFirst("Location").toString();

         Assert.assertEquals(ERROR_MSG, "http://localhost/res?query", actualUri);
      }

      // testContentLocationFragment
      {
         Response r = builder.contentLocation(URI.create("/res#frag")).build();
         String actualUri = r.getMetadata().getFirst("Content-Location").toString();

         Assert.assertEquals(ERROR_MSG, "http://localhost/res#frag", actualUri);
      }

      // testReplace
      {
         String[] headers = {"header1", "header2", "header3"};
         Response response = Response.ok().header(headers[0], headers[0])
               .header(headers[1], headers[1]).header(headers[2], headers[2])
               .replaceAll(null).build();
         for (String header : headers) {
            Assert.assertTrue(ERROR_MSG, response.getHeaderString(header) == null);
         }
      }

      // allowStringArrayTruncateDuplicatesTest
      {
         String[] methods = {ResponseBuilderRequest.OPTIONS.name(), ResponseBuilderRequest.OPTIONS.name()};
         Response.ResponseBuilder rb = RuntimeDelegate.getInstance()
               .createResponseBuilder();
         Response response = rb.allow(methods).build();
         Set<String> set = response.getAllowedMethods();
         Assert.assertEquals(ERROR_MSG, 1, set.size());
         Assert.assertEquals(ERROR_MSG, set.iterator().next(), ResponseBuilderRequest.OPTIONS.name());
      }

      // testLinkHeaders
      {
         Response r1 = Response.ok()
               .link("Link1", "rel1")
               .links(
                     Link.fromUri("Link2").rel("rel2").build(),
                     Link.fromUri("Link3").rel("rel3").build()
               )
               .link("Link4", "rel4").build();

         Assert.assertEquals(ERROR_MSG, 4, r1.getLinks().size());
         Assert.assertNotNull("Link-Header 'Link1' missing", r1.getLink("rel1"));
         Assert.assertNotNull("Link-Header 'Link2' missing", r1.getLink("rel2"));
         Assert.assertNotNull("Link-Header 'Link3' missing", r1.getLink("rel3"));
         Assert.assertNotNull("Link-Header 'Link4' missing", r1.getLink("rel4"));

         @SuppressWarnings(value = "unchecked")
         Response r2 = Response.ok()
               .link("Link1", "rel1")
               .links((Link[]) null)
               .link("Link2", "rel2").build();

         Assert.assertEquals(ERROR_MSG, 1, r2.getLinks().size());
         Assert.assertNull("Link-Header 'Link1' was not removed", r2.getLink("rel1"));
         Assert.assertNotNull("Link-Header 'Link2' missing", r2.getLink("rel2"));
      }
   }
}
