/*
 * Copyright 2012-2023 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.autoconfigure.security.oauth2.client.servlet;

import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.security.ConditionalOnDefaultWebSecurity;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.oauth2.client.InMemoryOAuth2AuthorizedClientService;
import org.springframework.security.oauth2.client.OAuth2AuthorizedClientService;
import org.springframework.security.oauth2.client.registration.ClientRegistrationRepository;
import org.springframework.security.oauth2.client.web.AuthenticatedPrincipalOAuth2AuthorizedClientRepository;
import org.springframework.security.oauth2.client.web.OAuth2AuthorizedClientRepository;
import org.springframework.security.web.SecurityFilterChain;

import static org.springframework.security.config.Customizer.withDefaults;

/**
 * {@link SecurityFilterChain} to add OAuth client support.
 *
 * @author Madhura Bhave
 * @author Phillip Webb
 */
@Configuration(proxyBeanMethods = false)
@ConditionalOnBean(ClientRegistrationRepository.class)
class OAuth2WebSecurityConfiguration {

	@Bean
	@ConditionalOnMissingBean
	OAuth2AuthorizedClientService authorizedClientService(ClientRegistrationRepository clientRegistrationRepository) {
		return new InMemoryOAuth2AuthorizedClientService(clientRegistrationRepository);
	}

	@Bean
	@ConditionalOnMissingBean
	OAuth2AuthorizedClientRepository authorizedClientRepository(OAuth2AuthorizedClientService authorizedClientService) {
		return new AuthenticatedPrincipalOAuth2AuthorizedClientRepository(authorizedClientService);
	}

	@Configuration(proxyBeanMethods = false)
	@ConditionalOnDefaultWebSecurity
	static class OAuth2SecurityFilterChainConfiguration {

		@Bean
		SecurityFilterChain oauth2SecurityFilterChain(HttpSecurity http) throws Exception {
			http.authorizeHttpRequests((requests) -> requests.anyRequest().authenticated());
			http.oauth2Login(withDefaults());
			http.oauth2Client(withDefaults());
			return http.build();
		}

	}

}
