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 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
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 * file and include the License file at packager/legal/LICENSE.txt.
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package com.sun.enterprise.tools.upgrade.common;


import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;

import com.sun.enterprise.tools.upgrade.common.arguments.ArgumentHandler;
import com.sun.enterprise.util.i18n.StringManager;
import com.sun.enterprise.tools.upgrade.common.arguments.ARG_target;
import com.sun.enterprise.tools.upgrade.common.arguments.ARG_source;
import com.sun.enterprise.tools.upgrade.logging.LogService;

/**
 * Parse the arguments for the upgrade tool
 * and invoke the appropriate handler
 *
 * @author Hans Hrasna
 */
public class ArgsParser {

    private static final Logger _logger = LogService.getLogger();
    private static final StringManager sm =
        StringManager.getManager(ArgsParser.class);

    private CommonInfoModel commonInfo;
    
    /** Creates a new instance of ArgsParser */
	public ArgsParser() {
        commonInfo = CommonInfoModel.getInstance();
    }
		
	public ArrayList parse(String [] args){
		ArrayList aList = new ArrayList();
		String tmpArg;
        int srcIndx = 0;
        int trgIndx = 0;
		for(int i =0; i < args.length; i++){
			//- System.out.println("lenght: " + args.length + "\ti: " + i);
			tmpArg = args[i];
			if (tmpArg.startsWith("-")){
				//- strip option designator '-' or '--'
				tmpArg = tmpArg.substring(tmpArg.lastIndexOf("-") + 1);
				ArgumentHandler aHandler = getArgHandler(tmpArg);
				if(aHandler.isRequiresParameter() && i+1 < args.length){
					aHandler.setRawParameters(args[++i]);
				}
				aList.add(aHandler);
				// --passwordfile/-f creates credential ArgumentHandlers
				aList.addAll(aHandler.getChildren());
                if (aHandler instanceof ARG_target){
                    trgIndx = aList.indexOf(aHandler);
                }
                if (aHandler instanceof ARG_source){
                    srcIndx = aList.indexOf(aHandler);
                }
			} 
			//-System.out.println("   tmpArg: " + tmpArg);
		}

        //- force the src location to preceed target location
        //- so future processing will proceed properly.
        if (srcIndx > trgIndx){
            ArgumentHandler tmpA = aList.remove(srcIndx);
            aList.add(trgIndx, tmpA);
        }
		return aList;
	}

    
	private ArgumentHandler getArgHandler(String cmd) {
		ArgumentHandler aHandler = null;
		Class clazz = null;
		try {
			clazz = Class.forName("com.sun.enterprise.tools.upgrade.common.arguments.ARG_" + cmd);
		} catch (ClassNotFoundException cnf) {
			try {
				clazz = Class.forName("com.sun.enterprise.tools.upgrade.common.arguments.ARG_UnknownCmd");
			} catch (ClassNotFoundException cnf1) {
				_logger.log(Level.INFO, sm.getString(
					"enterprise.tools.upgrade.cli.arg_unknow_class_not_found"));
			}
		} catch (Exception e1) {
			_logger.log(Level.INFO, sm.getString("enterprise.tools.upgrade.cli.invalid_option",e1), e1);
		}
		
		try {
			aHandler = (ArgumentHandler)clazz.getConstructor().newInstance();
			aHandler.setCmd(cmd);
		} catch (Exception ex) {
			_logger.log(Level.INFO,
				sm.getString("enterprise.tools.upgrade.cli.invalid_option",cmd), ex);
			System.exit(1);
		}
		return aHandler;
	}
}