package org.springframework.cloud.netflix.zuul;

import static org.junit.Assert.assertEquals;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.context.embedded.LocalServerPort;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.cloud.netflix.ribbon.RibbonClient;
import org.springframework.cloud.netflix.ribbon.StaticServerList;
import org.springframework.cloud.netflix.zuul.filters.discovery.DiscoveryClientRouteLocator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
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.SpringJUnit4ClassRunner;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import com.netflix.loadbalancer.Server;
import com.netflix.loadbalancer.ServerList;
import com.netflix.zuul.ZuulFilter;
import com.netflix.zuul.context.RequestContext;

@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(
		classes = RetryableZuulProxyApplication.class,
		webEnvironment = WebEnvironment.RANDOM_PORT,
		value = {
				"zuul.routes.simple.path: /simple/**",
				"zuul.routes.simple.retryable: true",
				"ribbon.OkToRetryOnAllOperations: true"})
@DirtiesContext
public class RetryableZuulProxyApplicationTests {

	private RestTemplate testRestTemplate;

	@Autowired
	@SuppressWarnings("unused")
	private DiscoveryClientRouteLocator routes;

	@Autowired
	@SuppressWarnings("unused")
	private RoutesEndpoint endpoint;

	@LocalServerPort
	private int port;

	@Before
	public void setTestRequestContext() {
		RequestContext context = new RequestContext();
		RequestContext.testSetCurrentContext(context);
		testRestTemplate = new RestTemplateBuilder().build();
	}

	@Test
	public void postWithForm() {
		MultiValueMap<String, String> form = new LinkedMultiValueMap<String, String>();
		form.set("foo", "bar");
		HttpHeaders headers = new HttpHeaders();
		headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
		ResponseEntity<String> result = testRestTemplate.exchange(
				"http://localhost:" + port + "/simple", HttpMethod.POST,
				new HttpEntity<>(form, headers), String.class);
		assertEquals(HttpStatus.OK, result.getStatusCode());
		assertEquals("Posted! {foo=[bar]}", result.getBody());
	}

}

// Don't use @SpringBootApplication because we don't want to component scan
@Configuration
@EnableAutoConfiguration
@RestController
@EnableZuulProxy
@RibbonClient(name = "simple", configuration = RetryableRibbonClientConfiguration.class)
class RetryableZuulProxyApplication {

	@RequestMapping(value = "/", method = RequestMethod.POST)
	public String delete(@RequestBody MultiValueMap<String, String> form) {
		return "Posted! " + form;
	}

	@Bean
	public ZuulFilter sampleFilter() {
		return new ZuulFilter() {
			@Override
			public String filterType() {
				return "pre";
			}

			@Override
			public boolean shouldFilter() {
				return true;
			}

			@Override
			public Object run() {
				return null;
			}

			@Override
			public int filterOrder() {
				return 0;
			}
		};
	}

}

// Load balancer with fixed server list for "simple" pointing to localhost
@Configuration
class RetryableRibbonClientConfiguration {

	@LocalServerPort
	private int port;

	@Bean
	public ServerList<Server> ribbonServerList() {
		return new StaticServerList<>(new Server("localhost", this.port),
				new Server("failed-localhost", this.port));
	}
}

@@ -538,16 +538,21 @@
 rk.boot.
+test.
 web.clie
@@ -546,32 +546,36 @@
 test.web.client.
+Test
 RestTemplateBuil
@@ -570,23 +570,16 @@
 Template
-Builder
 ;%0Aimport
@@ -1656,60 +1656,8 @@
 ler;
-%0Aimport org.springframework.web.client.RestTemplate;
 %0A%0Aim
@@ -2186,16 +2186,28 @@
 ests %7B%0A%0A
+%09@Autowired%0A
 %09private
@@ -2207,16 +2207,20 @@
 private 
+Test
 RestTemp
@@ -2410,46 +2410,8 @@
 t;%0A%0A
-%09@LocalServerPort%0A%09private int port;%0A%0A
 %09@Be
@@ -2556,64 +2556,8 @@
 t);%0A
-%09%09testRestTemplate = new RestTemplateBuilder().build();%0A
 %09%7D%0A%0A
@@ -2874,41 +2874,12 @@
 ge(%0A
+
 %09%09%09%09
-%22http://localhost:%22 + port + 
 %22/si

Revert "Trying a plain RestTemplate in an attempt to fix intermittent test failures."