/**
 * 
 */
package onetomany.bargainingchipsgame.interactions;

/**
 * Message is an ENUM which its value is either `bid', `accept', or `end'. Any other value means a null.
 * 
 *  
 * @author Faria Nassiri-Mofakham
 *
 */
public enum Message {
	BID("B"), ACCEPT("A"), END("E"), OTHER;
	// message codes: `bid' [body contains a bundle], `accept' [agree with the deal (based on the rules); null body], 
	// `end' [quitting the negotiation; null body]
     private String key;

     Message(String k) 
     { 
    	 this.key = k; 
     }

     //default constructor, used only for the OTHER case, 
     //because OTHER doesn't need a key to be associated with. 
     Message() 
     { 
    	 
     }

     Message getKey(String x) {
         if ("B".equals(x)) { return BID; }
         else if ("A".equals(x)) { return ACCEPT; }
         else if (x == null) { return OTHER; }
         else throw new IllegalArgumentException();
     }
}