Reddit WebClient Configuration

RedditConfig.java

@Configuration
public class RedditConfig {
    private static final String REDDIT_OAUTH2_REGISTRATION_ID = "reddit";
    private static final String REDDIT_BASE_URL = "https://oauth.reddit.com";

    @Bean(name = "redditWebClient")
    public WebClient redditWebClient(ReactiveOAuth2AuthorizedClientManager reactiveOAuth2AuthorizedClientManager) {
        ServerOAuth2AuthorizedClientExchangeFilterFunction oauth2 =
                new ServerOAuth2AuthorizedClientExchangeFilterFunction(reactiveOAuth2AuthorizedClientManager);
        oauth2.setDefaultClientRegistrationId(REDDIT_OAUTH2_REGISTRATION_ID);
        
        return WebClient.builder()
                .baseUrl(REDDIT_BASE_URL)
                .filter(oauth2)
                .build();
    }

    @Bean
    public ReactiveOAuth2AuthorizedClientManager authorizedClientManager(
            ReactiveClientRegistrationRepository clientRegistrationRepository,
            ReactiveOAuth2AuthorizedClientService authorizedClientService) {

        ReactiveOAuth2AuthorizedClientProvider authorizedClientProvider =
                ReactiveOAuth2AuthorizedClientProviderBuilder.builder()
                        .clientCredentials()
                        .build();

        AuthorizedClientServiceReactiveOAuth2AuthorizedClientManager authorizedClientManager =
                new AuthorizedClientServiceReactiveOAuth2AuthorizedClientManager(
                        clientRegistrationRepository,
                        authorizedClientService);
        authorizedClientManager.setAuthorizedClientProvider(authorizedClientProvider);
        return authorizedClientManager;
    }
}