package org.webslinger.rules;

 import java.io.IOException;

 import java.util.List;

 import javax.servlet.ServletException;

 import javax.servlet.ServletRequest;

 import org.webslinger.Webslinger;

 import org.webslinger.collections.CollectionUtil;

 public class CSSReqParamSelector extends AbstractSelector {

     private String name;

     private String value;

     private Operator operator = Operator.HAS;

     public CSSReqParamSelector(int id) {

         super(id);

     }

     public CSSReqParamSelector(Rules p, int id) {

         super(p, id);

     }

     /** Accept the visitor. **/

     public Object jjtAccept(RulesVisitor visitor, Object data) {

         return visitor.visit(this, data);

     }

     void setName(String name) {

         this.name = name;

     }

     public String getName() {

         return name;

     }

     void setOperator(Operator operator) {

         this.operator = operator;

     }

     public Operator getOperator() {

         return operator;

     }

     void setValue(String value) {

         this.value = value;

     }

     public String getValue() {

         return value;

     }

     public boolean matches(ServletRequest request, Webslinger top) throws IOException, ServletException {

         switch (operator) {

             case HAS:

                 return request.getParameter(getName()) != null;

             case EQUALS:

                 return getValue().equals(request.getParameter(getName()));

             case CONTAINS:

                 String value = (String) request.getParameter(getName());

                 if (value == null) return false;

                 List parts = CollectionUtil.split(value, "[, ]");

                 for (int i = 0; i < parts.size(); i++) {

                     if (parts.get(i).equals(getValue())) return true;

                 }

                 return false;

         }

         return false;

     }

     public void updateSpecificity(int[] specificity, boolean[] isConstantHolder) {

         isConstantHolder[0] = false;

         specificity[Selector.ACTION.ordinal()]++;

         super.updateSpecificity(specificity, isConstantHolder);

     }

     public String toString() {

         return "ReqParamSelector(" + getName() + ":" + getOperator() + ":" + getValue() + ")";

     }

 }