/*
 * 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.usergrid.tools;


import java.lang.reflect.InvocationTargetException;
import java.util.Arrays;

import org.springframework.util.StringUtils;

import org.apache.commons.beanutils.MethodUtils;


public class Command {

    /**
     * @param args
     */
    public static void main( String[] args ) {

        if ( ( args == null ) || ( args.length < 1 ) ) {
            System.out.println( "No command specified" );
            return;
        }

        String command = args[0];

        Class<?> clazz = null;

        try {
            clazz = Class.forName( command );
        }
        catch ( ClassNotFoundException e ) {
        }

        if ( clazz == null ) {
            try {
                clazz = Class.forName( "org.apache.usergrid.tools." + command );
            }
            catch ( ClassNotFoundException e ) {
            }
        }

        if ( clazz == null ) {
            try {
                clazz = Class.forName( "org.apache.usergrid.tools." + StringUtils.capitalize( command ) );
            }
            catch ( ClassNotFoundException e ) {
                e.printStackTrace();
            }
        }

        if ( clazz == null ) {
            System.out.println( "Unable to find command" );
            return;
        }

        args = Arrays.copyOfRange( args, 1, args.length );

        try {
            if ( ToolBase.class.isAssignableFrom( clazz ) ) {
                ToolBase tool = ( ToolBase ) clazz.newInstance();
                tool.startTool( args );
            }
            else {
                MethodUtils.invokeStaticMethod( clazz, "main", ( Object ) args );
            }
        }
        catch ( NoSuchMethodException e ) {
            System.out.println( "Unable to invoke command" );
            e.printStackTrace();
        }
        catch ( IllegalAccessException e ) {
            System.out.println( "Unable to invoke command" );
            e.printStackTrace();
        }
        catch ( InvocationTargetException e ) {
            System.out.println( "Error while invoking command" );
            e.printStackTrace();
        }
        catch ( InstantiationException e ) {
            System.out.println( "Error while instantiating tool object" );
            e.printStackTrace();
        }
    }
}