/*
    * Copyright 2002-2011 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.provider.endpoint;
  
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.springframework.beans.factory.InitializingBean;
  import org.springframework.security.oauth2.common.exceptions.OAuth2Exception;
  import org.springframework.security.oauth2.provider.OAuth2RequestFactory;
  import org.springframework.security.oauth2.provider.ClientDetailsService;
  import org.springframework.security.oauth2.provider.TokenGranter;
  import org.springframework.security.oauth2.provider.error.DefaultWebResponseExceptionTranslator;
  import org.springframework.security.oauth2.provider.error.WebResponseExceptionTranslator;
  import org.springframework.security.oauth2.provider.request.DefaultOAuth2RequestFactory;
  import org.springframework.util.Assert;
  
  /**
   * @author Dave Syer
   * 
   */
  public class AbstractEndpoint implements InitializingBean {
  
  	protected final Log logger = LogFactory.getLog(getClass());
  
  	private WebResponseExceptionTranslator<OAuth2Exception> providerExceptionHandler = new DefaultWebResponseExceptionTranslator();
  
  	private TokenGranter tokenGranter;
  
  	private ClientDetailsService clientDetailsService;
  
  	private OAuth2RequestFactory oAuth2RequestFactory;
  
  	private OAuth2RequestFactory defaultOAuth2RequestFactory;
  
  	public void afterPropertiesSet() throws Exception {
  		Assert.state(tokenGranter != null, "TokenGranter must be provided");
  		Assert.state(clientDetailsService != null, "ClientDetailsService must be provided");
  		defaultOAuth2RequestFactory = new DefaultOAuth2RequestFactory(getClientDetailsService());
  		if (oAuth2RequestFactory == null) {
  			oAuth2RequestFactory = defaultOAuth2RequestFactory;
  		}
  	}
  
  	public void setProviderExceptionHandler(WebResponseExceptionTranslator<OAuth2Exception> providerExceptionHandler) {
  		this.providerExceptionHandler = providerExceptionHandler;
  	}
  
  	public void setTokenGranter(TokenGranter tokenGranter) {
  		this.tokenGranter = tokenGranter;
  	}
  
  	protected TokenGranter getTokenGranter() {
  		return tokenGranter;
  	}
  
  	protected WebResponseExceptionTranslator<OAuth2Exception> getExceptionTranslator() {
  		return providerExceptionHandler;
  	}
  
  	protected OAuth2RequestFactory getOAuth2RequestFactory() {
  		return oAuth2RequestFactory;
  	}
  
  	protected OAuth2RequestFactory getDefaultOAuth2RequestFactory() {
  		return defaultOAuth2RequestFactory;
  	}
  
  	public void setOAuth2RequestFactory(OAuth2RequestFactory oAuth2RequestFactory) {
  		this.oAuth2RequestFactory = oAuth2RequestFactory;
  	}
  
  	protected ClientDetailsService getClientDetailsService() {
  		return clientDetailsService;
  	}
  
  	public void setClientDetailsService(ClientDetailsService clientDetailsService) {
  		this.clientDetailsService = clientDetailsService;
  	}
  
  }