package org.apache.ws.java2wsdl;

/*
 * Copyright 2004,2005 The Apache Software Foundation.
 *
 * Licensed 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.
 *
 */

public class Java2WSDLUtils {

    public static final String HTTP = "http://";

    public static final char PACKAGE_CLASS_DELIMITER = '.';

    public static final String SCHEMA_NAMESPACE_EXTN = "/xsd";

    private static NamespaceGenerator defaultNsGenerator = new DefaultNamespaceGenerator();

    /**
     * check the entry for a URL. This is a simple check and need to be improved
     *
     * @param entry
     */

    public static boolean isURL(String entry) {
        return entry.startsWith("http://");
    }

    /**
     * A method to strip the fully qualified className to a simple classname
     *
     * @param qualifiedName
     */
    public static String getSimpleClassName(String qualifiedName) {
        int index = qualifiedName.lastIndexOf(".");
        if (index > 0) {
            return qualifiedName.substring(index + 1,
                    qualifiedName.length());
        }
        return qualifiedName;
    }

    public static StringBuffer namespaceFromClassName(String className,
                                                      ClassLoader classLoader) throws Exception {
        return namespaceFromClassName(className, classLoader, defaultNsGenerator);
    }


    public static StringBuffer namespaceFromClassName(String className,
                                                      ClassLoader classLoader,
                                                      NamespaceGenerator nsGen) throws Exception {
        Class clazz = Class.forName(className,
                true,
                classLoader);
        Package pkg = clazz.getPackage();
        String name;

        if (pkg != null)
            name = pkg.getName();
        else
            name = packageNameFromClass(className);

        return nsGen.namespaceFromPackageName(name);
    }

    public static StringBuffer schemaNamespaceFromClassName(String packageName, ClassLoader loader) throws Exception {
        return schemaNamespaceFromClassName(packageName, loader, defaultNsGenerator);
    }

    public static StringBuffer schemaNamespaceFromClassName(String packageName, ClassLoader loader, NamespaceGenerator nsGen) throws Exception {
        StringBuffer stringBuffer = namespaceFromClassName(packageName,
                loader,
                nsGen);
        if (stringBuffer.length() == 0) {
            stringBuffer.append(Java2WSDLConstants.DEFAULT_TARGET_NAMESPACE);
        }
        stringBuffer.append(SCHEMA_NAMESPACE_EXTN);
        return stringBuffer;
    }

    public static StringBuffer targetNamespaceFromClassName(String packageName, ClassLoader loader,
                                                            NamespaceGenerator nsGen) throws Exception {
        StringBuffer stringBuffer = namespaceFromClassName(packageName,
                loader,
                nsGen);
        if (stringBuffer.length() == 0) {
            stringBuffer.append(Java2WSDLConstants.DEFAULT_TARGET_NAMESPACE);
        }
        return stringBuffer;
    }


    public static String getPackageName(String className, ClassLoader classLoader) throws Exception {
        Class clazz = Class.forName(className,
                true,
                classLoader);
        Package pkg = clazz.getPackage();
        String name;

        if (pkg != null)
            name = pkg.getName();
        else
            name = packageNameFromClass(className);
        return name;
    }

    protected static String packageNameFromClass(String name) {
        String ret = "";
        int lastDot = name.lastIndexOf('.');

        if (lastDot != -1)
            ret = name.substring(0, lastDot);
        return ret;
    }
}