/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.cxf.interceptor;

import javax.xml.namespace.QName;

import org.w3c.dom.Element;

import org.apache.cxf.common.i18n.Message;
import org.apache.cxf.common.i18n.UncheckedException;
import org.apache.cxf.helpers.DOMUtils;

/**
 * A Fault that occurs during invocation processing.
 */
public class Fault extends UncheckedException {
    public static final QName FAULT_CODE_CLIENT = new QName("http://cxf.apache.org/faultcode", "client");
    public static final QName FAULT_CODE_SERVER = new QName("http://cxf.apache.org/faultcode", "server");
    
    public static final String STACKTRACE = "stackTrace";
    private Element detail;
    private String message;
    private QName code;
    
    public Fault(Message message, Throwable throwable) {
        super(message, throwable);
        this.message = message.toString();
        code = FAULT_CODE_SERVER;
    }
    
    public Fault(Message message) {
        super(message);
        this.message = message.toString();
        code = FAULT_CODE_SERVER;
    }

    public Fault(Throwable t) {
        super(t);
        if (super.getMessage() != null) {
            message = super.getMessage();
        } else {
            message = t == null ? null : t.getMessage();
        }
        code = FAULT_CODE_SERVER;
    }
    
    public Fault(Message message, Throwable throwable, QName fc) {
        super(message, throwable);
        this.message = message.toString();
        code = fc;
    }
    
    public Fault(Message message, QName fc) {
        super(message);
        this.message = message.toString();
        code = fc;
    }

    public Fault(Throwable t, QName fc) {
        super(t);
        if (super.getMessage() != null) {
            message = super.getMessage();
        } else {
            message = t == null ? null : t.getMessage();
        }
        code = fc;
    }    

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }
    
    public QName getFaultCode() {
        return code;
    }
    
    public Fault setFaultCode(QName c) {
        code = c;
        return this;
    }

    /**
     * Returns the detail node.
     * @return the detail node.
     */
    public Element getDetail() {
        return detail;
    }

    /**
     * Sets a details <code>Node</code> on this fault.
     * 
     * @param details the detail node.
     */
    public void setDetail(Element details) {
        detail = details;
    }

    /**
     * Indicates whether this fault has a detail message.
     * 
     * @return <code>true</code> if this fault has a detail message;
     *         <code>false</code> otherwise.
     */
    public boolean hasDetails() {
        return this.detail != null;
    }

    /**
     * Returns the detail node. If no detail node has been set, an empty
     * <code>&lt;detail&gt;</code> is created.
     * 
     * @return the detail node.
     */
    public Element getOrCreateDetail() {
        if (detail == null) {
            detail = DOMUtils.createDocument().createElement("detail");
        }
        return detail;
    }
}
