import java.net.*;
import java.text.*;
import java.util.*;

public class Cookie{

     //clean information
	 private String key=null;
	 private String value=null;
     
     private URI uri=null;          //URI
     private String domain=null;    //domain
     private Date expire_date=null; //expire
     private String path=null;      //path
	 
     //date formats
     private static DateFormat DateFormat_I=
                new SimpleDateFormat("E, dd MMM yyyy k:m:s 'GMT'");
     private static DateFormat DateFormat_II=
                new SimpleDateFormat("E, dd-MMM-yyyy k:m:s 'GMT'");
				
     public Cookie(URI uri, String cookie_content) {
	 
     //initialization    
     this.uri = uri; 
     this.path = "/";
     this.domain = uri.getHost(); 
	 
     System.out.println("cookie_content="+cookie_content);
	 
     //extract the domain, path and expiration date          
     StringTokenizer ST=new StringTokenizer(cookie_content,";");
     String sir=ST.nextToken();
     this.key=sir.substring(0,sir.indexOf('='));
     this.value=sir.substring(sir.indexOf('='),sir.length());
            
     String[] S=new String[ST.countTokens()];
     int k=0;
     
     while(ST.hasMoreTokens())
              {
              S[k]=ST.nextToken().trim();
              k++;
              }
     
     for(int i=0;i<k;i++)
          {
          String key_side=S[i].substring(0,S[i].indexOf('='));
          String value_side=S[i].substring(S[i].indexOf('=')+1,S[i].length());
                              
          if(key_side.equalsIgnoreCase("domain"))
                 {
                 //verify if uri.getHost coresponds to domain
                 this.domain=value_side;
                 }  
                 
          if(key_side.equalsIgnoreCase("path"))
                 {
                 this.path=value_side;
                 }
                 
          if(key_side.equalsIgnoreCase("expires"))
                 {
                 try{
                    this.expire_date=DateFormat_I.parse(value_side);
                    }catch(ParseException e)
                       {
                       try{
                          this.expire_date=DateFormat_II.parse(value_side);                          
                          }catch(ParseException e2)
                             {throw new IllegalArgumentException(
                                    "Bad date format in cookie_content: " + value);}}                         
                 }
              }   
        
        System.out.println("-----------------------------------------------");
        System.out.println("domain / path / expire_date = "+this.domain+" / "
              +this.path+" / "+expire_date);
        System.out.println("-----------------------------------------------");               
        }           
     
     //verify if the current cookie has expired             
     public boolean ExpireState()
           {
           if(this.expire_date==null)
                 {
                 return false;
                 }
                 
       Date today=new Date();
       boolean aft=today.after(expire_date);
       return aft;
     }
        
     //verify if the current cookie coresponds to the URI
     public boolean MatchState(URI uri)
      {
       if (ExpireState())
                 {
                 return false;
                 }

      String path=uri.getPath();
       if (path==null)
          {
          path = "/";
          }

       if(path.startsWith(this.path))return true;
       return false;
      }

  //returns the cookie inofrmation
  public String toString()
     {
     StringBuilder SB=new StringBuilder(key);
     SB.append(value);
     return SB.toString();
     } 

//returns key
public String getCookieKey()
 {
 return this.key;
 }

//return URI
public URI getURI()
 {
 return this.uri;
 }
}

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