/**
    * Copyright 2005-2016 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.util;
  
  import com.google.common.collect.Maps;
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.krad.datadictionary.parse.BeanTag;
  import org.kuali.rice.krad.datadictionary.parse.BeanTagAttribute;
  import org.kuali.rice.krad.datadictionary.uif.UifDictionaryBeanBase;
  import org.kuali.rice.krad.uif.UifConstants;
  import org.kuali.rice.krad.util.KRADUtils;
  
  import java.io.Serializable;
  import java.util.HashMap;
  import java.util.Map;
  
  /**
   * This object represents a url in the Krad framework.  The url can be set explicitly to a specific href or a
   * controller
   * plus a viewId can be provided (at very minimum).  By default, the krad base bean config points the baseUrl property
   * to 'krad.url' configuration property and the methodToCall to 'start', but these can be reset to any value as needed.
   *
   * <p>
   * If href is not set, the generated value of href is constructed (in general) as follows:<br/>
   * baseUrl + /controllerMapping + ? + methodToCall param + viewId param + other parameters
   * <br/>
   * with any necessary tokens to construct a valid url.  If baseUrl is not provided, the url is not valid and a
   * blank string is returned.
   * </p>
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  @BeanTag(name = "url-bean", parent = "Uif-Url")
  public class UrlInfo extends UifDictionaryBeanBase implements Serializable {
  
      private static final long serialVersionUID = 3195177614468120958L;
  
      private String href;
      private String originalHref;
      private String baseUrl;
      private String controllerMapping;
      private String viewType;
      private String viewId;
      private String pageId;
      private String formKey;
      private String methodToCall;
      private Map<String, String> requestParameters;
  
      /**
       * Base constructor
       */
      public UrlInfo() {}
  
      /**
       * Constructor that initializes an href value
       *
       * @param href the href value
       */
      public UrlInfo(String href) {
          this.href = href;
          this.originalHref = href;
      }
  
      /**
       * Constructor that sets the base url construction properties
       *
       * @param baseUrl the baseUrl
       * @param controllerMapping the controllerMapping
       * @param viewId the id of the view
       * @param methodToCall the methodToCall
       */
      public UrlInfo(String baseUrl, String controllerMapping, String viewId, String methodToCall) {
          this.baseUrl = baseUrl;
          this.controllerMapping = controllerMapping;
          this.viewId = viewId;
          this.methodToCall = methodToCall;
      }
  
      /**
       * Generate the url based on properties of this object
       *
       * @return the generatedUrl, blank if not a valid url (no baseUrl value provided)
       */
      protected String generateUrl() {
          String generatedUrl = "";
  
         if (StringUtils.isBlank(baseUrl)) {
             return generatedUrl;
         }
 
         generatedUrl = baseUrl;
 
         if (StringUtils.isNotBlank(controllerMapping) && !controllerMapping.startsWith("/")) {
             generatedUrl = generatedUrl + "/" + controllerMapping;
         } else if (StringUtils.isNotBlank(controllerMapping)) {
             generatedUrl = generatedUrl + controllerMapping;
         }
 
         Map<String, String> allRequestParameters = new HashMap<String, String>();
 
         if (StringUtils.isNotBlank(methodToCall)) {
             allRequestParameters.put(UifConstants.CONTROLLER_METHOD_DISPATCH_PARAMETER_NAME, methodToCall);
         }
 
         if (StringUtils.isNotBlank(viewId)) {
             allRequestParameters.put(UifConstants.UrlParams.VIEW_ID, viewId);
         }
 
         if (StringUtils.isNotBlank(pageId)) {
             allRequestParameters.put(UifConstants.UrlParams.PAGE_ID, pageId);
         }
 
         if (StringUtils.isNotBlank(formKey)) {
             allRequestParameters.put(UifConstants.UrlParams.FORM_KEY, formKey);
         }
 
         if (requestParameters != null) {
             allRequestParameters.putAll(requestParameters);
         }
 
         //add the request parameters
         generatedUrl = generatedUrl + KRADUtils.getRequestStringFromMap(allRequestParameters);
 
         return generatedUrl;
     }
 
     /**
      * Get the href value for this url object.  This is the main call to this url object as it provides the full href
      * value represented by this object.
      *
      * <p>
      * If href has NOT been explicitly set to a value, the href is generated by
      * constructing pieces of the url set through the properties of this url object.
      * The generated value of href is constructed (in general) as follows:<br/>
      * baseUrl + /controllerMapping + ? + methodToCall param + viewId param + other parameters
      * <br/>
      * with any necessary tokens to construct a valid url.  If baseUrl is not provided, the url is not valid and a
      * blank string is returned.
      * </p>
      *
      * @return THE href represented by this url object, or blank if not valid
      */
     @BeanTagAttribute(name = "href")
     public String getHref() {
         if (StringUtils.isBlank(this.href)) {
             this.href = generateUrl();
         }
 
         return href;
     }
 
     /**
      * Explicitly set the href value - if this is called with a value, all other properties of the url object are
      * ignored.  This call is basically a full override.  This also sets the orginalHref value.
      *
      * @param href
      */
     public void setHref(String href) {
         this.href = href;
         this.originalHref = href;
     }
 
     /**
      * The base url value (the value that comes before other properties).  Default base bean value is set to use
      * 'krad.url' of the configuration properties.
      *
      * @return the baseUrl
      */
     @BeanTagAttribute(name = "baseUrl")
     public String getBaseUrl() {
         return baseUrl;
     }
 
     /**
      * Set the baseUrl
      *
      * @param baseUrl
      */
     public void setBaseUrl(String baseUrl) {
         this.baseUrl = baseUrl;
     }
 
     /**
      * The controllerMapping for the url (string that represents the controllerMapping path appended to baseUrl)
      *
      * @return the controllerMapping string
      */
     @BeanTagAttribute(name = "controllerMapping")
     public String getControllerMapping() {
         return controllerMapping;
     }
 
     /**
      * Set the controllerMapping
      *
      * @param controllerMapping
      */
     public void setControllerMapping(String controllerMapping) {
         this.controllerMapping = controllerMapping;
     }
 
     /**
      * The viewType representing the View's base type
      *
      * @return the viewType
      */
     @BeanTagAttribute(name = "viewType")
     public String getViewType() {
         return viewType;
     }
 
     /**
      * Set the viewType
      *
      * @param viewType
      */
     public void setViewType(String viewType) {
         this.viewType = viewType;
     }
 
     /**
      * ViewId representing the view by id to retrieve
      *
      * @return the viewId
      */
     @BeanTagAttribute(name = "viewId")
     public String getViewId() {
         return viewId;
     }
 
     /**
      * Set viewId
      *
      * @param viewId
      */
     public void setViewId(String viewId) {
         this.viewId = viewId;
     }
 
     /**
      * PageId representing the page of the view to retrieve by id
      *
      * @return the pageId
      */
     @BeanTagAttribute(name = "pageId")
     public String getPageId() {
         return pageId;
     }
 
     /**
      * Set pageId
      *
      * @param pageId
      */
     public void setPageId(String pageId) {
         this.pageId = pageId;
     }
 
     /**
      * FormKey representing the key of the form data to retrieve
      *
      * @return the formKey
      */
     @BeanTagAttribute(name = "formKey")
     public String getFormKey() {
         return formKey;
     }
 
     /**
      * Set the formKey
      *
      * @param formKey
      */
     public void setFormKey(String formKey) {
         this.formKey = formKey;
     }
 
     /**
      * MethodToCall representing the methodToCall on the controller (default base bean value is 'start')
      *
      * @return methodToCall on controller
      */
     @BeanTagAttribute(name = "methodToCall")
     public String getMethodToCall() {
         return methodToCall;
     }
 
     /**
      * Set the methodToCall
      *
      * @param methodToCall
      */
     public void setMethodToCall(String methodToCall) {
         this.methodToCall = methodToCall;
     }
 
     /**
      * Map of key value pairs that will be appended to the request parameters to pass in any custom data
      *
      * @return the requestParameters map
      */
     @BeanTagAttribute(name = "requestParameters", type = BeanTagAttribute.AttributeType.MAPVALUE)
     public Map<String, String> getRequestParameters() {
         return requestParameters;
     }
 
     /**
      * Set the requestParameters
      *
      * @param requestParameters
      */
     public void setRequestParameters(Map<String, String> requestParameters) {
         this.requestParameters = requestParameters;
     }
 
     /**
      * The original(set) href value.  This is generally used to determine if the href was explicitly set and not
      * generated by this url object.
      *
      * @return the original(set) href value
      */
     public String getOriginalHref() {
         return originalHref;
     }
 
     /**
      * toString override returns the href value of url
      *
      * @return href value
      */
     @Override
     public String toString() {
         return this.getHref();
     }
 
     /**
      * toString returns the original href value of url
      *
      * @return original href value
      */
     public void setOriginalHref(String originalHref) {
         this.originalHref = originalHref;
     }
 
     @Override
     protected <T> void copyProperties(T dictionaryBaseBean) {
         super.copyProperties(dictionaryBaseBean);
 
         UrlInfo urlInfoCopy = (UrlInfo) dictionaryBaseBean;
 
         urlInfoCopy.setHref(this.href);
         urlInfoCopy.setOriginalHref(this.originalHref);
         urlInfoCopy.setBaseUrl(this.baseUrl);
         urlInfoCopy.setControllerMapping(this.controllerMapping);
         urlInfoCopy.setViewType(this.viewType);
         urlInfoCopy.setViewId(this.viewId);
         urlInfoCopy.setPageId(this.pageId);
         urlInfoCopy.setFormKey(this.formKey);
         urlInfoCopy.setMethodToCall(this.methodToCall);
 
         if (this.requestParameters != null) {
             Map<String, String> requestParametersCopy = Maps.newHashMapWithExpectedSize(this.requestParameters.size());
             for (Map.Entry requestParameter : requestParameters.entrySet()) {
                 requestParametersCopy.put(requestParameter.getKey().toString(), requestParameter.getValue().toString());
             }
 
             urlInfoCopy.setRequestParameters(requestParametersCopy);
         }
     }
 }