/**
    * Copyright 2005-2014 The Kuali Foundation
    *
    * Licensed under the Educational Community 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
    *
    * http://www.opensource.org/licenses/ecl2.php
    *
   * 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.kuali.rice.krad.uif.widget;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.core.api.CoreApiServiceLocator;
  import org.kuali.rice.core.web.format.Formatter;
  import org.kuali.rice.krad.bo.ExternalizableBusinessObject;
  import org.kuali.rice.krad.service.KRADServiceLocator;
  import org.kuali.rice.krad.service.KRADServiceLocatorWeb;
  import org.kuali.rice.krad.service.ModuleService;
  import org.kuali.rice.krad.uif.UifConstants;
  import org.kuali.rice.krad.uif.UifParameters;
  import org.kuali.rice.krad.uif.component.BindingInfo;
  import org.kuali.rice.krad.uif.component.Component;
  import org.kuali.rice.krad.uif.field.DataField;
  import org.kuali.rice.krad.uif.field.LinkField;
  import org.kuali.rice.krad.uif.util.LookupInquiryUtils;
  import org.kuali.rice.krad.uif.util.ObjectPropertyUtils;
  import org.kuali.rice.krad.uif.util.ViewModelUtils;
  import org.kuali.rice.krad.uif.view.View;
  import org.kuali.rice.krad.util.UrlFactory;
  
  import java.security.GeneralSecurityException;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.Map.Entry;
  import java.util.Properties;
  
  /**
   * Widget for rendering an Inquiry link on a field's value
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class Inquiry extends WidgetBase {
      private static final long serialVersionUID = -2154388007867302901L;
      private static final org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(Inquiry.class);
  
      public static final String INQUIRY_TITLE_PREFIX = "title.inquiry.url.value.prependtext";
  
      private String baseInquiryUrl;
  
      private String dataObjectClassName;
      private String viewName;
  
      private Map<String, String> inquiryParameters;
  
      private boolean forceInquiry;
  
      private LinkField inquiryLinkField;
  
      public Inquiry() {
          super();
  
          forceInquiry = false;
          inquiryParameters = new HashMap<String, String>();
      }
  
      /**
       * @see org.kuali.rice.krad.uif.widget.WidgetBase#performFinalize(org.kuali.rice.krad.uif.view.View,
       *      java.lang.Object, org.kuali.rice.krad.uif.component.Component)
       */
      @Override
      public void performFinalize(View view, Object model, Component parent) {
          super.performFinalize(view, model, parent);
  
          // only set inquiry if enabled
          if (!isRender() || !isReadOnly()) {
              return;
          }
  
          // set render to false until we find an inquiry class
          setRender(false);
  
          DataField field = (DataField) parent;
  
          // check if field value is null, if so no inquiry
          Object propertyValue = ObjectPropertyUtils.getPropertyValue(model, field.getBindingInfo().getBindingPath());
          if ((propertyValue == null) || StringUtils.isBlank(propertyValue.toString())) {
              return;
          }
  
          setupLink(view, model, field);
      }
  
     /**
      * Get parent object and field name and build the inquiry link
      * This was moved from the performFinalize because overlapping and to be used
      * by DirectInquiry
      *
      * @param view - Container View
      * @param model - model
      * @param field - The parent Attribute field
      */
     public void setupLink(View view, Object model, DataField field) {
         String propertyName = field.getBindingInfo().getBindingName();
 
         // if class and parameters configured, build link from those
         if (StringUtils.isNotBlank(getDataObjectClassName()) && (getInquiryParameters() != null) &&
                 !getInquiryParameters().isEmpty()) {
             Class<?> inquiryObjectClass = null;
             try {
                 inquiryObjectClass = Class.forName(getDataObjectClassName());
             } catch (ClassNotFoundException e) {
                 LOG.error("Unable to get class for: " + getDataObjectClassName());
                 throw new RuntimeException(e);
             }
 
             updateInquiryParameters(field.getBindingInfo());
 
             buildInquiryLink(model, propertyName, inquiryObjectClass, getInquiryParameters());
         }
         // get inquiry class and parameters from view helper
         else {
             // get parent object for inquiry metadata
             Object parentObject = ViewModelUtils.getParentObjectForMetadata(view, model, field);
             view.getViewHelperService().buildInquiryLink(parentObject, propertyName, this);
         }
     }
 
     /**
      * Adjusts the path on the inquiry parameter property to match the binding
      * path prefix of the given <code>BindingInfo</code>
      *
      * @param bindingInfo - binding info instance to copy binding path prefix from
      */
     public void updateInquiryParameters(BindingInfo bindingInfo) {
         Map<String, String> adjustedInquiryParameters = new HashMap<String, String>();
         for (String fromField : inquiryParameters.keySet()) {
             String toField = inquiryParameters.get(fromField);
             String adjustedFromFieldPath = bindingInfo.getPropertyAdjustedBindingPath(fromField);
 
             adjustedInquiryParameters.put(adjustedFromFieldPath, toField);
         }
 
         this.inquiryParameters = adjustedInquiryParameters;
     }
 
     /**
      * Builds the inquiry link based on the given inquiry class and parameters
      *
      * @param dataObject - parent object that contains the data (used to pull inquiry
      * parameters)
      * @param propertyName - name of the property the inquiry is set on
      * @param inquiryObjectClass - class of the object the inquiry should point to
      * @param inquiryParms - map of key field mappings for the inquiry
      */
     public void buildInquiryLink(Object dataObject, String propertyName, Class<?> inquiryObjectClass,
             Map<String, String> inquiryParms) {
         Properties urlParameters = new Properties();
 
         urlParameters.put(UifParameters.DATA_OBJECT_CLASS_NAME, inquiryObjectClass.getName());
         urlParameters.put(UifParameters.METHOD_TO_CALL, UifConstants.MethodToCallNames.START);
 
         for (Entry<String, String> inquiryParameter : inquiryParms.entrySet()) {
             String parameterName = inquiryParameter.getKey();
 
             Object parameterValue = ObjectPropertyUtils.getPropertyValue(dataObject, parameterName);
 
             // TODO: need general format util that uses spring
             if (parameterValue == null) {
                 parameterValue = "";
             } else if (parameterValue instanceof java.sql.Date) {
                 if (Formatter.findFormatter(parameterValue.getClass()) != null) {
                     Formatter formatter = Formatter.getFormatter(parameterValue.getClass());
                     parameterValue = formatter.format(parameterValue);
                 }
             } else {
                 parameterValue = parameterValue.toString();
             }
 
             // Encrypt value if it is a field that has restriction that prevents a value from being shown to
             // user, because we don't want the browser history to store the restricted attributes value in the URL
             if (KRADServiceLocatorWeb.getDataObjectAuthorizationService()
                     .attributeValueNeedsToBeEncryptedOnFormsAndLinks(inquiryObjectClass, inquiryParameter.getValue())) {
                 try {
                     if(CoreApiServiceLocator.getEncryptionService().isEnabled()) {
                         parameterValue = CoreApiServiceLocator.getEncryptionService().encrypt(parameterValue);
                     }
                 } catch (GeneralSecurityException e) {
                     LOG.error("Exception while trying to encrypted value for inquiry framework.", e);
                     throw new RuntimeException(e);
                 }
             }
 
             // add inquiry parameter to URL
             urlParameters.put(inquiryParameter.getValue(), parameterValue);
         }
 
         // build inquiry URL
         String inquiryUrl = "";
 
         // check for EBOs for an alternate inquiry URL
         ModuleService responsibleModuleService =
                 KRADServiceLocatorWeb.getKualiModuleService().getResponsibleModuleService(inquiryObjectClass);
         if (responsibleModuleService != null && responsibleModuleService.isExternalizable(inquiryObjectClass)) {
             inquiryUrl = responsibleModuleService.getExternalizableDataObjectLookupUrl(inquiryObjectClass,
                     urlParameters);
         } else {
             inquiryUrl = UrlFactory.parameterizeUrl(getBaseInquiryUrl(), urlParameters);
         }
 
         getInquiryLinkField().setHrefText(inquiryUrl);
 
         // set inquiry title
         String linkTitle = createTitleText(inquiryObjectClass);
         linkTitle = LookupInquiryUtils.getLinkTitleText(linkTitle, inquiryObjectClass, getInquiryParameters());
         getInquiryLinkField().setTitle(linkTitle);
 
         setRender(true);
     }
 
     /**
      * Gets text to prepend to the inquiry link title
      *
      * @param dataObjectClass - data object class being inquired into
      * @return String title prepend text
      */
     public String createTitleText(Class<?> dataObjectClass) {
         String titleText = "";
 
         String titlePrefixProp =
                 KRADServiceLocator.getKualiConfigurationService().getPropertyValueAsString(INQUIRY_TITLE_PREFIX);
         if (StringUtils.isNotBlank(titlePrefixProp)) {
             titleText += titlePrefixProp + " ";
         }
 
         String objectLabel = KRADServiceLocatorWeb.getDataDictionaryService().getDataDictionary()
                 .getDataObjectEntry(dataObjectClass.getName()).getObjectLabel();
         if (StringUtils.isNotBlank(objectLabel)) {
             titleText += objectLabel + " ";
         }
 
         return titleText;
     }
 
     /**
      * @see org.kuali.rice.krad.uif.component.ComponentBase#getComponentsForLifecycle()
      */
     @Override
     public List<Component> getComponentsForLifecycle() {
         List<Component> components = super.getComponentsForLifecycle();
 
         components.add(getInquiryLinkField());
 
         return components;
     }
 
     public String getBaseInquiryUrl() {
         return this.baseInquiryUrl;
     }
 
     public void setBaseInquiryUrl(String baseInquiryUrl) {
         this.baseInquiryUrl = baseInquiryUrl;
     }
 
     public String getDataObjectClassName() {
         return this.dataObjectClassName;
     }
 
     public void setDataObjectClassName(String dataObjectClassName) {
         this.dataObjectClassName = dataObjectClassName;
     }
 
     public String getViewName() {
         return this.viewName;
     }
 
     public void setViewName(String viewName) {
         this.viewName = viewName;
     }
 
     public boolean isForceInquiry() {
         return this.forceInquiry;
     }
 
     public void setForceInquiry(boolean forceInquiry) {
         this.forceInquiry = forceInquiry;
     }
 
     public Map<String, String> getInquiryParameters() {
         return this.inquiryParameters;
     }
 
     public void setInquiryParameters(Map<String, String> inquiryParameters) {
         this.inquiryParameters = inquiryParameters;
     }
 
     public LinkField getInquiryLinkField() {
         return this.inquiryLinkField;
     }
 
     public void setInquiryLinkField(LinkField inquiryLinkField) {
         this.inquiryLinkField = inquiryLinkField;
     }
 }