package org.kuali.ole.select.document.web;
   
   import org.apache.commons.lang.StringUtils;
   import org.apache.struts.action.ActionForm;
   import org.apache.struts.action.ActionForward;
   import org.apache.struts.action.ActionMapping;
   import org.kuali.ole.sys.OLEConstants;
   import org.kuali.rice.core.api.util.RiceConstants;
   import org.kuali.rice.kns.web.struts.action.KualiAction;
  import org.kuali.rice.krad.exception.AuthorizationException;
  import org.kuali.rice.krad.util.GlobalVariables;
  import org.kuali.rice.krad.util.KRADConstants;
  import org.kuali.rice.krad.util.UrlFactory;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import java.util.Properties;
  
  /**
   * Created with IntelliJ IDEA.
   * User: adityas
   * Date: 12/10/13
   * Time: 6:41 PM
   * To change this template use File | Settings | File Templates.
   */
  public class OLEReqPOAskQuestionAction extends KualiAction {
  
  
      @Override
      protected void checkAuthorization(ActionForm form, String methodToCall)
              throws AuthorizationException {
          // no authorization required
      }
  
      public ActionForward start(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
          // deal with the fact that some requests might be reposts from errors on the reason field
          processErrorMessages(request);
  
          return mapping.findForward(RiceConstants.MAPPING_BASIC);
      }
  
  
      public ActionForward processAnswer(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
          OLEReqPOAskQuestionForm oleReqPOAskQuestionForm = (OLEReqPOAskQuestionForm) form;
  
          Properties parameters = new Properties();
  
          parameters.put(KRADConstants.DOC_FORM_KEY, oleReqPOAskQuestionForm.getFormKey());
          parameters.put(KRADConstants.QUESTION_CLICKED_BUTTON, getSelectedButton(request));
          parameters.put(KRADConstants.METHOD_TO_CALL_ATTRIBUTE, oleReqPOAskQuestionForm.getCaller());
          parameters.put(KRADConstants.REFRESH_CALLER, KRADConstants.QUESTION_REFRESH);
          parameters.put(KRADConstants.QUESTION_INST_ATTRIBUTE_NAME, oleReqPOAskQuestionForm.getQuestionIndex());
          if(oleReqPOAskQuestionForm.getDocNum() != null){
              parameters.put(KRADConstants.DOC_NUM, oleReqPOAskQuestionForm.getDocNum());
          }
  
          if (StringUtils.isNotBlank(oleReqPOAskQuestionForm.getQuestionAnchor())) {
              parameters.put(KRADConstants.ANCHOR, oleReqPOAskQuestionForm.getQuestionAnchor());
          }
  
          String context = oleReqPOAskQuestionForm.getContext();
          if (StringUtils.isNotBlank(context)) {
              parameters.put(KRADConstants.QUESTION_CONTEXT, context);
          }
  
          if (StringUtils.isNotBlank(oleReqPOAskQuestionForm.getCancellationReason()) || StringUtils.isNotBlank(oleReqPOAskQuestionForm.getReason())) {
              String reason = oleReqPOAskQuestionForm.getCancellationReason()+ OLEConstants.BLANK_SPACE + "/" + OLEConstants.BLANK_SPACE + oleReqPOAskQuestionForm.getReason();
              parameters.put(KRADConstants.QUESTION_REASON_ATTRIBUTE_NAME, reason);
          }
  
          if (StringUtils.isNotBlank(oleReqPOAskQuestionForm.getMethodToCallPath())) {
              // For header tab navigation. Leaving it blank will just kick user back to page.
              parameters.put(oleReqPOAskQuestionForm.getMethodToCallPath(), "present");
          }
  
          String returnUrl = UrlFactory.parameterizeUrl( oleReqPOAskQuestionForm.getBackLocation(), parameters);
  
          return new ActionForward(returnUrl, true);
      }
  
  
  /**
       * Parses the method to call attribute to pick off the button number that was pressed.
       *
       * @param request
       * @return int
       */
  
      private String getSelectedButton(HttpServletRequest request) {
          String selectedButton = "-1";
          String parameterName = (String) request.getAttribute(KRADConstants.METHOD_TO_CALL_ATTRIBUTE);
          if (StringUtils.isNotBlank(parameterName)) {
              selectedButton = StringUtils.substringBetween(parameterName, ".button", ".");
          }
  
          return selectedButton;
      }
  
  
     private void processErrorMessages(HttpServletRequest request) {
         String errorKey = request.getParameter(KRADConstants.QUESTION_ERROR_KEY);
         String errorPropertyName = request.getParameter(KRADConstants.QUESTION_ERROR_PROPERTY_NAME);
         String errorParameter = request.getParameter(KRADConstants.QUESTION_ERROR_PARAMETER);
 
         if (StringUtils.isNotBlank(errorKey)) {
             if (StringUtils.isBlank(errorPropertyName)) {
                 throw new IllegalStateException("Both the errorKey and the errorPropertyName must be filled in, " + "in order for errors to be displayed by the question component.  Currently, " + "only the errorKey has a value specified.");
             }
             else {
                 if (StringUtils.isBlank(errorParameter)) {
                     GlobalVariables.getMessageMap().putErrorWithoutFullErrorPath(errorPropertyName, errorKey);
                 }
                 else {
                     GlobalVariables.getMessageMap().putErrorWithoutFullErrorPath(errorPropertyName, errorKey, errorParameter);
                 }
             }
         }
     }
 }