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package com.sun.xml.ws.encoding.policy;

import com.sun.istack.NotNull;
import com.sun.xml.ws.api.client.SelectOptimalEncodingFeature;
import com.sun.xml.ws.api.model.wsdl.WSDLModel;
import com.sun.xml.ws.api.model.wsdl.WSDLPort;
import com.sun.xml.ws.api.model.wsdl.WSDLService;
import com.sun.xml.ws.policy.AssertionSet;
import com.sun.xml.ws.policy.Policy;
import com.sun.xml.ws.policy.PolicyAssertion;
import com.sun.xml.ws.policy.PolicyException;
import com.sun.xml.ws.policy.PolicyMap;
import com.sun.xml.ws.policy.PolicyMapKey;
import com.sun.xml.ws.policy.jaxws.spi.ModelConfiguratorProvider;
import java.util.Iterator;
import javax.xml.namespace.QName;

import static com.sun.xml.ws.encoding.policy.EncodingConstants.SELECT_OPTIMAL_ENCODING_ASSERTION;
        
/**
 * A configurator provider for FastInfoset policy assertions.
 *
 * @author Paul.Sandoz@Sun.Com
 */
public class SelectOptimalEncodingModelConfiguratorProvider implements ModelConfiguratorProvider{        
    public static final QName enabled = new QName("enabled");
    
    /**
     * Process SelectOptimalEncoding policy assertions.
     *
     * @param model the WSDL model.
     * @param policyMap the policy map.
     */
    public void configure(@NotNull WSDLModel model, @NotNull PolicyMap policyMap) throws PolicyException {
        assert model != null;
        assert policyMap != null;
        
        for (WSDLService service:model.getServices().values()) {
            for (WSDLPort port : service.getPorts()) {
                configure(port, policyMap);
            } // end foreach port
        } // end foreach service
    }
    
    public void configure(@NotNull WSDLPort port, @NotNull PolicyMap policyMap) throws PolicyException {
        assert port != null;
        assert policyMap != null;
        
        PolicyMapKey key = PolicyMap.createWsdlEndpointScopeKey(port.getOwner().getName(),port.getName());
        Policy policy = policyMap.getEndpointEffectivePolicy(key);
        if (null!=policy && policy.contains(SELECT_OPTIMAL_ENCODING_ASSERTION)) {
            Iterator <AssertionSet> assertions = policy.iterator();
            while(assertions.hasNext()){
                AssertionSet assertionSet = assertions.next();
                Iterator<PolicyAssertion> policyAssertion = assertionSet.iterator();
                while(policyAssertion.hasNext()){
                    PolicyAssertion assertion = policyAssertion.next();
                    if(SELECT_OPTIMAL_ENCODING_ASSERTION.equals(assertion.getName())){
                        String value = assertion.getAttributeValue(enabled);
                        boolean isSelectOptimalEncodingEnabled = value == null || Boolean.valueOf(value.trim());
                        port.addFeature(
                                new SelectOptimalEncodingFeature(isSelectOptimalEncodingEnabled));
                    } 
                } 
            } 
        }
    }
}