/*
 * Copyright 2019-2020 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.cloud.stream.app.security.common;

import reactor.core.publisher.Flux;

import org.springframework.boot.actuate.autoconfigure.security.reactive.ReactiveManagementWebSecurityAutoConfiguration;
import org.springframework.boot.autoconfigure.AutoConfigureBefore;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
import org.springframework.boot.autoconfigure.security.reactive.ReactiveSecurityAutoConfiguration;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Conditional;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.reactive.EnableWebFluxSecurity;
import org.springframework.security.config.web.server.ServerHttpSecurity;
import org.springframework.security.web.server.SecurityWebFilterChain;
import org.springframework.security.web.server.WebFilterChainProxy;
import org.springframework.web.reactive.config.WebFluxConfigurer;

/**
 * @author Artem Bilan
 * @since 3.0
 */
@Conditional(OnHttpCsrfOrSecurityDisabled.class)
@Configuration
@ConditionalOnClass({Flux.class, EnableWebFluxSecurity.class, WebFilterChainProxy.class, WebFluxConfigurer.class})
@ConditionalOnMissingBean(WebFilterChainProxy.class)
@ConditionalOnWebApplication(type = ConditionalOnWebApplication.Type.REACTIVE)
@AutoConfigureBefore({ReactiveManagementWebSecurityAutoConfiguration.class,
		ReactiveSecurityAutoConfiguration.class})
@EnableConfigurationProperties(AppStarterWebSecurityAutoConfigurationProperties.class)
public class AppStarterWebFluxSecurityAutoConfiguration {

	@Bean
	public SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity http,
															AppStarterWebSecurityAutoConfigurationProperties securityProperties) {
		if (!securityProperties.isCsrfEnabled()) {
			http.csrf().disable();
		}
		if (!securityProperties.isEnabled()) {
			http.authorizeExchange()
					.anyExchange()
					.permitAll();
		}
		return http.build();
	}

}
