/*
 * 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.axis2.wsdl.util;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import javax.wsdl.Definition;
import javax.wsdl.Import;
import javax.wsdl.Types;
import javax.wsdl.extensions.ExtensibilityElement;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Vector;

/**
 * This class provides support for processing a WSDL4J defintion which includes imports.
 * It allows the imports to be processed into a single WSDL4J Definition object
 */
public class WSDL4JImportedWSDLHelper {

    protected static final Log log = LogFactory.getLog(WSDL4JImportedWSDLHelper.class);
    private static final boolean isTraceEnabled = log.isTraceEnabled();

    /**
     * The intention of this procedure is to process the imports. When
     * processing the imports the imported documents will be populating the
     * items in the main document recursivley
     *
     * @param wsdl4JDefinition
     */
    public static void processImports(Definition wsdl4JDefinition,
                                    List processedDocuments) {

            Map wsdlImports = wsdl4JDefinition.getImports();

            if (null != wsdlImports && !wsdlImports.isEmpty()) {
                Collection importsCollection = wsdlImports.values();
                for (Iterator iterator = importsCollection.iterator(); iterator
                        .hasNext();) {
                    Vector values = (Vector) iterator.next();
                    for (int i = 0; i < values.size(); i++) {
                        Import wsdlImport = (Import) values.elementAt(i);

                        if (wsdlImport.getDefinition() != null) {
                            Definition importedDef = wsdlImport.getDefinition();

                            if (importedDef != null) {
                                String key = importedDef.getDocumentBaseURI();
                                if (key == null) {
                                    key = importedDef.getTargetNamespace();
                                }
                                // stop recursive imports!
                                if (processedDocuments.contains(key)) {
                                    return;
                                }
                                processedDocuments.add(key);

                                processImports(importedDef,
                                        processedDocuments);

                                // copy ns
                                Map namespaces = importedDef.getNamespaces();
                                Iterator keys = namespaces.keySet().iterator();
                                while (keys.hasNext()) {
                                    Object key2 = keys.next();
                                    if (!wsdl4JDefinition.getNamespaces()
                                            .containsValue(namespaces.get(key2))) {
                                        wsdl4JDefinition.getNamespaces().put(key2,
                                                namespaces.get(key2));
                                    }
                                }

                                wsdl4JDefinition.getNamespaces().putAll(namespaces);
                                // copy types
                                Types t = importedDef.getTypes();
                                if (t != null) {
                                    List typesList = t.getExtensibilityElements();
                                    for (int j = 0; j < typesList.size(); j++) {
                                        Types types = wsdl4JDefinition.getTypes();
                                        if (types == null) {
                                            types = wsdl4JDefinition.createTypes();
                                            wsdl4JDefinition.setTypes(types);
                                        }
                                        types.addExtensibilityElement((ExtensibilityElement) typesList
                                                        .get(j));

                                    }
                                }

                                // add messages
                                Map messagesMap = importedDef.getMessages();
                                wsdl4JDefinition.getMessages().putAll(messagesMap);

                                // add portypes
                                Map porttypeMap = importedDef.getPortTypes();
                                wsdl4JDefinition.getPortTypes().putAll(porttypeMap);

                                // add bindings
                                Map bindingMap = importedDef.getBindings();
                                wsdl4JDefinition.getBindings().putAll(bindingMap);

                                // add services
                                Map serviceMap = importedDef.getServices();
                                wsdl4JDefinition.getServices().putAll(serviceMap);

                                List extElementList = importedDef
                                        .getExtensibilityElements();
                                wsdl4JDefinition.getExtensibilityElements().addAll(
                                        extElementList);

                            }

                        }
                    }
                }
            }
        }

}