package com.atlassian.johnson.event;
   
   import org.apache.commons.lang.ObjectUtils;
   
   import java.io.PrintWriter;
   import java.io.StringWriter;
   import java.text.SimpleDateFormat;
   import java.util.Date;
   import java.util.Map;
  import java.util.HashMap;
  import java.util.Collections;
  
  /**
   * This class represents an ApplicationEvent
   */
  public class Event {
  
      private final Map<Object, Object> attributes;
  
      private String date;
      private String desc;
      private String exception;
      private EventType key;
      private EventLevel level;
      private int progress;
  
      public Event(EventType key, String desc) {
          this(key, desc, null, null);
      }
  
      public Event(EventType key, String desc, String exception) {
          this(key, desc, exception, null);
      }
  
      public Event(EventType key, String desc, EventLevel level) {
          this(key, desc, null, level);
      }
  
      public Event(EventType key, String desc, String exception, EventLevel level) {
          this.desc = desc;
          this.exception = exception;
          this.key = key;
          this.level = level;
  
          attributes = new HashMap<Object, Object>();
          date = getFormattedDate();
          progress = -1;
      }
  
      public static String toString(Throwable t) {
          StringWriter string = new StringWriter();
          PrintWriter writer = new PrintWriter(string);
  
          writer.println(t);
          t.printStackTrace(writer);
          while ((t = t.getCause()) != null) {
              writer.println("Caused by: " + t);
              t.printStackTrace(writer);
          }
          writer.flush();
  
          return string.toString();
      }
  
      public void addAttribute(Object key, Object value) {
          attributes.put(key, value);
      }
  
      public Object getAttribute(Object key) {
          return attributes.get(key);
      }
  
      public Map getAttributes() {
          return Collections.unmodifiableMap(attributes);
      }
  
      public String getDate() {
          return date;
      }
  
      public String getDesc() {
          return desc;
      }
  
      public String getException() {
          return exception;
      }
  
      public EventType getKey() {
          return key;
      }
  
      public EventLevel getLevel() {
          return level;
      }
  
      public int getProgress() {
          return progress;
      }
 
     public boolean hasProgress() {
         return (progress != -1);
     }
 
     public void setDate(String date) {
         this.date = date;
     }
 
     public void setDesc(String desc) {
         this.desc = desc;
     }
 
     public void setException(String exception) {
         this.exception = exception;
     }
 
     public void setKey(EventType name) {
         this.key = name;
     }
 
     public void setLevel(EventLevel level) {
         this.level = level;
     }
 
     public void setProgress(int progress) {
         this.progress = progress;
     }
 
     public boolean equals(Object o) {
         if (this == o) {
             return true;
         }
         if (!(o instanceof Event)) {
             return false;
         }
 
         Event e = (Event) o;
         return ObjectUtils.equals(getDate(), e.getDate()) &&
                 ObjectUtils.equals(getDesc(), e.getDesc()) &&
                 ObjectUtils.equals(getException(), e.getException()) &&
                 ObjectUtils.equals(getKey(), e.getKey()) &&
                 ObjectUtils.equals(getLevel(), e.getLevel());
     }
 
     public int hashCode() {
         int result = 7;
         result = 31 * result + ObjectUtils.hashCode(getKey());
         result = 31 * result + ObjectUtils.hashCode(getDesc());
         result = 31 * result + ObjectUtils.hashCode(getException());
         result = 31 * result + ObjectUtils.hashCode(getLevel());
         result = 31 * result + ObjectUtils.hashCode(getDate());
         return result;
     }
 
     public String toString() {
         return "(Event: Level = " + (getLevel() == null ? "" : getLevel() + " ") +
                 ", Key = " + (getKey() == null ? "" : getKey() + " ") +
                 ", Desc = " + (getDesc() == null ? "" : getDesc() + " ") +
                 ", Exception = " + (getException() == null ? "" : getException() +
                 ")");
     }
 
     private static String getFormattedDate() {
         return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date());
     }
 }