/*
 * Copyright 2012-2016 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.boot.actuate.endpoint.mvc;

import java.net.URI;
import java.util.Arrays;

import org.junit.Test;
import org.junit.runner.RunWith;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.actuate.autoconfigure.MinimalActuatorHypermediaApplication;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
import org.springframework.boot.test.web.client.TestRestTemplate;
import org.springframework.hateoas.ResourceSupport;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.test.annotation.DirtiesContext;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import static org.assertj.core.api.Assertions.assertThat;
import static org.springframework.hateoas.mvc.ControllerLinkBuilder.linkTo;

/**
 * Integration tests for {@link HalBrowserMvcEndpoint} when a custom server port has been
 * configured.
 *
 * @author Dave Syer
 * @author Andy Wilkinson
 */
@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT, properties = {
		"management.port=0" })
@DirtiesContext
public class HalBrowserMvcEndpointServerPortIntegrationTests {

	@Value("${local.management.port}")
	private int port;

	@Test
	public void links() throws Exception {
		HttpHeaders headers = new HttpHeaders();
		headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
		ResponseEntity<String> entity = new TestRestTemplate().exchange(
				"http://localhost:" + this.port + "/actuator", HttpMethod.GET,
				new HttpEntity<Void>(null, headers), String.class);
		assertThat(entity.getStatusCode()).isEqualTo(HttpStatus.OK);
		assertThat(entity.getBody()).contains("\"_links\":");
		assertThat(entity.getBody()).contains(":" + this.port);
	}

	@Test
	public void linksWithTrailingSlash() throws Exception {
		HttpHeaders headers = new HttpHeaders();
		headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
		ResponseEntity<String> entity = new TestRestTemplate().exchange(
				"http://localhost:" + this.port + "/actuator/", HttpMethod.GET,
				new HttpEntity<Void>(null, headers), String.class);
		assertThat(entity.getStatusCode()).isEqualTo(HttpStatus.OK);
		assertThat(entity.getBody()).contains("\"_links\":");
		assertThat(entity.getBody()).contains(":" + this.port);
	}

	@Test
	public void browserRedirect() throws Exception {
		HttpHeaders headers = new HttpHeaders();
		headers.setAccept(Arrays.asList(MediaType.TEXT_HTML));
		ResponseEntity<String> entity = new TestRestTemplate().exchange(
				"http://localhost:" + this.port + "/actuator/", HttpMethod.GET,
				new HttpEntity<Void>(null, headers), String.class);
		assertThat(entity.getStatusCode()).isEqualTo(HttpStatus.FOUND);
		assertThat(entity.getHeaders().getLocation()).isEqualTo(
				URI.create("http://localhost:" + this.port + "/actuator/browser.html"));
	}

	@MinimalActuatorHypermediaApplication
	@RestController
	public static class SpringBootHypermediaApplication {

		@RequestMapping("")
		public ResourceSupport home() {
			ResourceSupport resource = new ResourceSupport();
			resource.add(linkTo(SpringBootHypermediaApplication.class).slash("/")
					.withSelfRel());
			return resource;
		}

	}

}
