/*
 * Copyright 2002-2017 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
 *
 *      http://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.security.web.server.context;

import org.junit.Test;
import org.springframework.mock.http.server.reactive.MockServerHttpRequest;
import org.springframework.mock.web.server.MockServerWebExchange;
import org.springframework.security.authentication.TestingAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.ReactiveSecurityContextHolder;
import org.springframework.web.server.ServerWebExchange;
import org.springframework.web.server.handler.DefaultWebFilterChain;
import reactor.core.publisher.Mono;
import reactor.test.StepVerifier;

import static org.assertj.core.api.Assertions.assertThat;

/**
 * @author Rob Winch
 * @since 5.0
 */
public class SecurityContextServerWebExchangeWebFilterTests {
	SecurityContextServerWebExchangeWebFilter filter = new SecurityContextServerWebExchangeWebFilter();

	Authentication principal = new TestingAuthenticationToken("user", "password", "ROLE_USER");

	ServerWebExchange exchange = MockServerWebExchange.from(MockServerHttpRequest.get("/").build());

	@Test
	public void filterWhenExistingContextAndPrincipalNotNullThenContextPopulated() {
		Mono<Void> result = this.filter.filter(this.exchange, new DefaultWebFilterChain( e ->
				e.getPrincipal()
					.doOnSuccess(contextPrincipal -> assertThat(contextPrincipal).isEqualTo(principal))
					.flatMap( contextPrincipal -> Mono.subscriberContext())
					.doOnSuccess( context -> assertThat(context.<String>get("foo")).isEqualTo("bar"))
					.then()
			)
		)
		.subscriberContext( context -> context.put("foo", "bar"))
		.subscriberContext(ReactiveSecurityContextHolder.withAuthentication(this.principal));

		StepVerifier.create(result)
			.verifyComplete();
	}

	@Test
	public void filterWhenPrincipalNotNullThenContextPopulated() {
		Mono<Void> result = this.filter.filter(this.exchange, new DefaultWebFilterChain( e ->
				e.getPrincipal()
					.doOnSuccess(contextPrincipal -> assertThat(contextPrincipal).isEqualTo(this.principal))
					.then()
			)
		)
		.subscriberContext(ReactiveSecurityContextHolder.withAuthentication(this.principal));

		StepVerifier.create(result)
			.verifyComplete();
	}

	@Test
	public void filterWhenPrincipalNullThenContextEmpty() {
		Authentication defaultAuthentication = new TestingAuthenticationToken("anonymouse", "anonymous", "TEST");
		Mono<Void> result = this.filter.filter(this.exchange, new DefaultWebFilterChain( e ->
				e.getPrincipal()
					.defaultIfEmpty(defaultAuthentication)
					.doOnSuccess( contextPrincipal -> assertThat(contextPrincipal).isEqualTo(defaultAuthentication)
					)
					.then()
			)
		);
		StepVerifier.create(result)
			.verifyComplete();
	}
}
