package org.springframework.security.oauth.examples.sparklr.mvc;
   
   import java.security.Principal;
   import java.util.LinkedHashMap;
   import java.util.Map;
   
   import org.springframework.security.oauth2.common.util.OAuth2Utils;
   import org.springframework.security.oauth2.provider.AuthorizationRequest;
   import org.springframework.security.oauth2.provider.ClientDetails;
  import org.springframework.security.oauth2.provider.ClientDetailsService;
  import org.springframework.security.oauth2.provider.approval.Approval;
  import org.springframework.security.oauth2.provider.approval.Approval.ApprovalStatus;
  import org.springframework.security.oauth2.provider.approval.ApprovalStore;
  import org.springframework.stereotype.Controller;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.SessionAttributes;
  import org.springframework.web.servlet.ModelAndView;
  
  /**
   * Controller for retrieving the model for and displaying the confirmation page for access to a protected resource.
   * 
   * @author Ryan Heaton
   */
  @Controller
  @SessionAttributes("authorizationRequest")
  public class AccessConfirmationController {
  
  	private ClientDetailsService clientDetailsService;
  
  	private ApprovalStore approvalStore;
  
  	@RequestMapping("/oauth/confirm_access")
  	public ModelAndView getAccessConfirmation(Map<String, Object> model, Principal principal) throws Exception {
  		AuthorizationRequest clientAuth = (AuthorizationRequest) model.remove("authorizationRequest");
  		ClientDetails client = clientDetailsService.loadClientByClientId(clientAuth.getClientId());
  		model.put("auth_request", clientAuth);
  		model.put("client", client);
  		Map<String, String> scopes = new LinkedHashMap<String, String>();
  		for (String scope : clientAuth.getScope()) {
  			scopes.put(OAuth2Utils.SCOPE_PREFIX + scope, "false");
  		}
  		for (Approval approval : approvalStore.getApprovals(principal.getName(), client.getClientId())) {
  			if (clientAuth.getScope().contains(approval.getScope())) {
  				scopes.put(OAuth2Utils.SCOPE_PREFIX + approval.getScope(),
  						approval.getStatus() == ApprovalStatus.APPROVED ? "true" : "false");
  			}
  		}
  		model.put("scopes", scopes);
  		return new ModelAndView("access_confirmation", model);
  	}
  
  	@RequestMapping("/oauth/error")
  	public String handleError(Map<String, Object> model) throws Exception {
  		// We can add more stuff to the model here for JSP rendering. If the client was a machine then
  		// the JSON will already have been rendered.
  		model.put("message", "There was a problem with the OAuth2 protocol");
  		return "oauth_error";
  	}
  
  	public void setClientDetailsService(ClientDetailsService clientDetailsService) {
  		this.clientDetailsService = clientDetailsService;
  	}
  
  	public void setApprovalStore(ApprovalStore approvalStore) {
  		this.approvalStore = approvalStore;
  	}
  
  }