/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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
    *
   *     http://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.apache.hadoop.chukwa.rest.bean;
  
  import java.text.ParseException;
  import java.util.Collection;
  
  import javax.xml.bind.annotation.XmlElement;
  import javax.xml.bind.annotation.XmlRootElement;
  import javax.xml.bind.annotation.XmlType;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.json.simple.JSONArray;
  import org.json.simple.JSONObject;
  
  import org.apache.hadoop.chukwa.datastore.WidgetStore;
  import org.apache.hadoop.chukwa.util.ExceptionUtil;
  
  @XmlRootElement
  @XmlType(propOrder={"id", "title", "version", "categories", "url", "description","refresh","parameters"})
  public class WidgetBean {
    private String id;
    private String title;
    private String version;
    private String categories;
    private String url;
    private String description;
    private int refresh;
    private ParametersBean[] parameters;
    private static Log log = LogFactory.getLog(WidgetBean.class);
  
    public WidgetBean() {
      
    }
    
    public WidgetBean(JSONObject json) throws ParseException {
      try {
        this.id=(String) json.get("id");
        this.title=(String) json.get("title");
        this.version=(String) json.get("version");
        this.categories=(String) json.get("categories");
        this.url=(String) json.get("url");
        this.description=(String) json.get("description");
        if(json.get("refresh").getClass().equals("String")) {
          int refresh = Integer.parseInt((String) json.get("refresh"));
          this.refresh = refresh;
        } else if(json.get("refresh").getClass().equals("Long")) {
          this.refresh = ((Long) json.get("refresh")).intValue();
        }
        try {
          int size = ((JSONArray) json.get("parameters")).size();
          ParametersBean[] list = new ParametersBean[size];
          for(int i=0;i<size;i++) {
            JSONArray jsonArray = (JSONArray) json.get("parameters");
            list[i] = new ParametersBean((JSONObject) jsonArray.get(i));
          }
          this.parameters=list;
        } catch (Exception e) {
          this.parameters=null;
        }
      } catch (Exception e) {
        log.error(ExceptionUtil.getStackTrace(e));
        throw new ParseException(ExceptionUtil.getStackTrace(e), 0);
      }
    }
    
    @XmlElement
    public String getId() {
      return id;
    }
  
    @XmlElement
    public String getTitle() {
      return title;
    }
    
    @XmlElement
    public String getVersion() {
      return version;
    }
    
    @XmlElement
   public String getCategories() {
     return categories;
   }
   
   @XmlElement
   public String getUrl() {
     return url;
   }
   
   @XmlElement
   public String getDescription() {
     return description;
   }
   
   @XmlElement
   public int getRefresh() {
     return refresh;
   }
   
   @XmlElement
   public ParametersBean[] getParameters() {
     return parameters.clone();
   }
   
   public void setId(String id) {
     this.id=id;
   }
   
   public void setUrl(String url) {
     this.url=url;
   }
   
   public void setTitle(String title) {
     this.title=title;
   }
   
   public void setDescription(String description) {
     this.description=description;
   }
   
   public void setVersion(String version) {
     this.version=version;
   }
   
   public void setCategories(String categories) {
     this.categories=categories;
   }
   
   public void setRefresh(int refresh) {
     this.refresh=refresh;
   }
   
   public void setParameters(ParametersBean[] p) {
     this.parameters=p.clone();
   }
   
   public void update() {
     try {
       WidgetBean widget = WidgetStore.list().get(this.id);
       if(widget!=null) {
         if(widget.getVersion().intern()!=this.version.intern()) {
           this.categories=widget.getCategories();
           this.title=widget.getTitle();
           this.version=widget.getVersion();
           this.url=widget.getUrl();
           this.description=widget.getDescription();
           ParametersBean[] plist = widget.getParameters();
           for(int i=0;i<this.parameters.length;i++) {
             Collection<String> value = this.parameters[i].getValue();
             for(int j=0;j<plist.length;j++) {
               if(plist[i].getName().intern()==this.parameters[j].getName().intern()) {
                 plist[j].setValue(value);
               }
             }
           }
           this.parameters=plist;
         }
       } else {
         log.info("Widget "+this.id+" is deprecated.");
       }
     } catch (IllegalAccessException e) {
       log.error("Unable to update widget: "+this.id+" "+ExceptionUtil.getStackTrace(e));
     }
     
   }
   
   public JSONObject deserialize() {
     JSONObject json = new JSONObject();
     try {
       json.put("id", this.id);
       json.put("title", this.title);
       json.put("description", this.description);
       json.put("version", this.version);
       json.put("categories", this.categories);
       json.put("refresh", this.refresh);
       json.put("url", this.url);
       JSONArray ja = new JSONArray();
       if(this.parameters!=null) {
         for(int i=0;i<this.parameters.length;i++) {
           ja.add(this.parameters[i].deserialize());
         }
       }
       json.put("parameters", (JSONArray) ja);
     } catch (Exception e) {
       log.error(ExceptionUtil.getStackTrace(e));
     }
     return json;    
   }
 }