/*
    * Copyright 2013-2014 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.security.oauth2.config.annotation.web.configuration;
  
  import java.util.Map;
  
  import javax.annotation.Resource;
  
  import org.springframework.beans.factory.annotation.Qualifier;
  import org.springframework.beans.factory.annotation.Value;
  import org.springframework.context.annotation.Bean;
  import org.springframework.context.annotation.Configuration;
  import org.springframework.context.annotation.Scope;
  import org.springframework.context.annotation.ScopedProxyMode;
  import org.springframework.security.oauth2.client.DefaultOAuth2ClientContext;
  import org.springframework.security.oauth2.client.OAuth2ClientContext;
  import org.springframework.security.oauth2.client.filter.OAuth2ClientContextFilter;
  import org.springframework.security.oauth2.client.token.AccessTokenRequest;
  import org.springframework.security.oauth2.client.token.DefaultAccessTokenRequest;
  
  /**
   * @author Dave Syer
   * 
   */
  @Configuration
  public class OAuth2ClientConfiguration {
  
  	@Bean
  	public OAuth2ClientContextFilter oauth2ClientContextFilter() {
  		OAuth2ClientContextFilter filter = new OAuth2ClientContextFilter();
  		return filter;
  	}
  
  	@Bean
  	@Scope(value = "request", proxyMode = ScopedProxyMode.INTERFACES)
  	protected AccessTokenRequest accessTokenRequest(@Value("#{request.parameterMap}")
  	Map<String, String[]> parameters, @Value("#{request.getAttribute('currentUri')}")
  	String currentUri) {
  		DefaultAccessTokenRequest request = new DefaultAccessTokenRequest(parameters);
  		request.setCurrentUri(currentUri);
  		return request;
  	}
  	
  	@Configuration
  	protected static class OAuth2ClientContextConfiguration {
  		
  		@Resource
  		@Qualifier("accessTokenRequest")
  		private AccessTokenRequest accessTokenRequest;
  		
  		@Bean
  		@Scope(value = "session", proxyMode = ScopedProxyMode.INTERFACES)
  		public OAuth2ClientContext oauth2ClientContext() {
  			return new DefaultOAuth2ClientContext(accessTokenRequest);
  		}
  		
  	}
  
  }