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 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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// Portions Copyright [2019] [Payara Foundation and/or its affiliates]
package com.sun.enterprise.deployment.runtime.common;

import static java.util.logging.Level.WARNING;

import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Logger;

import com.sun.enterprise.deployment.BundleDescriptor;
import com.sun.enterprise.deployment.MethodDescriptor;
import com.sun.enterprise.deployment.ServiceRefPortInfo;
import com.sun.enterprise.deployment.WebServiceEndpoint;
import com.sun.enterprise.deployment.runtime.RuntimeDescriptor;

public class MessageDescriptor extends RuntimeDescriptor {
    
    private static final long serialVersionUID = 6097863237384161130L;
    
    public static final String JAVA_METHOD = "JavaMethod";
    public static final String OPERATION_NAME = "OperationName";
    private static final String ALL_METHODS = "*";

    private String operationName;
    private MethodDescriptor methodDescriptor;
    private List convertedmethodDescriptors = new ArrayList<>();

    // When this message is defined from client side
    private ServiceRefPortInfo portInfo;

    // When this message is defined from server side
    private WebServiceEndpoint webServiceEndpoint;
    private BundleDescriptor bundleDescriptor;
    private boolean isConverted;

    public void setOperationName(String operationName) {
        this.operationName = operationName;
    }

    public String getOperationName() {
        return operationName;
    }

    public void setMethodDescriptor(MethodDescriptor methodDescriptor) {
        this.methodDescriptor = methodDescriptor;
    }

    public MethodDescriptor getMethodDescriptor() {
        return methodDescriptor;
    }

    public void setServiceRefPortInfo(ServiceRefPortInfo portInfo) {
        this.portInfo = portInfo;
    }

    public ServiceRefPortInfo getServiceRefPortInfo() {
        return portInfo;
    }

    public void setWebServiceEndpoint(WebServiceEndpoint endPoint) {
        this.webServiceEndpoint = endPoint;
    }

    public WebServiceEndpoint getWebServiceEndpoint() {
        return webServiceEndpoint;
    }

    public void setBundleDescriptor(BundleDescriptor bundleDesc) {
        this.bundleDescriptor = bundleDesc;
    }

    public BundleDescriptor getBundleDescriptor() {
        return bundleDescriptor;
    }

    /**
     * Return all methods defined in this message.
     *
     * In the case of an empty message, it will return all methods defined in the SEI.
     *
     * In the case of methods overloading, it will return all methods defined in the SEI that match with the specified
     * method name.
     *
     * In the case of DII, i.e the client doesn't have the SEI info, it will return an empty list for client side defined
     * message.
     *
     **/
    public List getAllDefinedMethodsInMessage() {
        // Only do the conversion if it hasn't been done yet
        if (!isConverted) {
            doStyleConversion();
        }
        
        return convertedmethodDescriptors;
    }

    private void doStyleConversion() {
        if (operationName == null && methodDescriptor == null) {
            // This is the empty message case and we need to expand to all methods
            
            convertedmethodDescriptors = getAllSEIMethodsOf(ALL_METHODS);
        } else if (methodDescriptor != null) {
            if (methodDescriptor.getName() != null && methodDescriptor.getParameterClassNames() != null) {
                // This is the exact case, so no conversion needed
                
                convertedmethodDescriptors.add(methodDescriptor);
            } else if (methodDescriptor.getName() != null && methodDescriptor.getParameterClassNames() == null) {
                // We need to check for overloading methods
                
                convertedmethodDescriptors = getAllSEIMethodsOf(methodDescriptor.getName());
            }
        }
        
        isConverted = true;
    }

    private List getAllSEIMethodsOf(String methodName) {
        String serviceInterfaceName = null;
        List allMethodsInSEI = new ArrayList<>();
        
        if (webServiceEndpoint != null) {
            
            // This is a server side message
            
            serviceInterfaceName = webServiceEndpoint.getServiceEndpointInterface();
            
        } else if (portInfo != null) {
            
            // This is a client side message
            
            serviceInterfaceName = portInfo.getServiceEndpointInterface();
        }

        // In the case of DII, client doesn't know the SEI name
        // return an empty list
        if (serviceInterfaceName == null) {
            return allMethodsInSEI;
        }

        ClassLoader classLoader = null;
        if (bundleDescriptor != null) {
            classLoader = bundleDescriptor.getClassLoader();
        }

        // Return an empty list if class loader is not set
        if (classLoader == null) {
            return allMethodsInSEI;
        }

        try {
            for (Method method : classLoader.loadClass(serviceInterfaceName).getMethods()) {
                if (methodName.equals(ALL_METHODS)) {
                    
                    // Empty message or message name is *
                    
                    allMethodsInSEI.add(new MethodDescriptor(method));
                } else if (methodName.equals(method.getName())) {
                    
                    // Overloading methods with same method name
                    
                    allMethodsInSEI.add(new MethodDescriptor(method));
                }
            }
        } catch (Exception e) {
            // If there is exception in the class loading then we just log and return the empty list
            Logger.getAnonymousLogger().log(WARNING, "Error occurred", e);
        }
        
        return allMethodsInSEI;
    }
}