/*
 * Copyright 2020-2023 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 sample.config;

import sample.web.authentication.DeviceCodeOAuth2AuthorizedClientProvider;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.oauth2.client.OAuth2AuthorizedClientManager;
import org.springframework.security.oauth2.client.OAuth2AuthorizedClientProvider;
import org.springframework.security.oauth2.client.OAuth2AuthorizedClientProviderBuilder;
import org.springframework.security.oauth2.client.registration.ClientRegistrationRepository;
import org.springframework.security.oauth2.client.web.DefaultOAuth2AuthorizedClientManager;
import org.springframework.security.oauth2.client.web.OAuth2AuthorizedClientRepository;
import org.springframework.security.oauth2.client.web.reactive.function.client.ServletOAuth2AuthorizedClientExchangeFilterFunction;
import org.springframework.web.reactive.function.client.WebClient;

/**
 * @author Steve Riesenberg
 * @since 1.1
 */
@Configuration
public class WebClientConfig {

	@Bean
	public WebClient webClient(OAuth2AuthorizedClientManager authorizedClientManager) {
		ServletOAuth2AuthorizedClientExchangeFilterFunction oauth2Client =
				new ServletOAuth2AuthorizedClientExchangeFilterFunction(authorizedClientManager);
		// @formatter:off
		return WebClient.builder()
				.apply(oauth2Client.oauth2Configuration())
				.build();
		// @formatter:on
	}

	@Bean
	public OAuth2AuthorizedClientManager authorizedClientManager(
			ClientRegistrationRepository clientRegistrationRepository,
			OAuth2AuthorizedClientRepository authorizedClientRepository) {

		OAuth2AuthorizedClientProvider authorizedClientProvider =
				OAuth2AuthorizedClientProviderBuilder.builder()
						.provider(new DeviceCodeOAuth2AuthorizedClientProvider())
						.authorizationCode()
						.refreshToken()
						.build();
		DefaultOAuth2AuthorizedClientManager authorizedClientManager =
				new DefaultOAuth2AuthorizedClientManager(
						clientRegistrationRepository, authorizedClientRepository);
		authorizedClientManager.setAuthorizedClientProvider(authorizedClientProvider);
		// Set a contextAttributesMapper to obtain device_code from the request
		authorizedClientManager.setContextAttributesMapper(DeviceCodeOAuth2AuthorizedClientProvider
				.deviceCodeContextAttributesMapper());

		return authorizedClientManager;
	}

}