package fmc.prototypes.javamail;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.commons.cli.PosixParser;

/**
 * Various tools for this little app
 *
 * @author kreuz
 */
public class Tools {
    /**
     * Arguments help option.
     */
    private static final Option HELP_OPTION = new Option("h", "help", false, "prints this help message");
    
    
    /** Creates a new instance of Tools */
    public Tools() {
    }
    
    /**
     * Parses the command line from given arguments.
     *
     * @param opts options for the parser.
     * @param args arguments to parse command line from.
     *
     * @return parsed command line.
     */
    public static CommandLine parseArgs(Option[] opts, String[] args) {
	Options options = new Options();
	
	options.addOption(HELP_OPTION);
	
	for (Option opt : opts) {
	    options.addOption(opt);
	    
	}
	
	CommandLine cmd = null;
	CommandLineParser parser = new PosixParser();
	
	try {
	    cmd = parser.parse(options, args);
	    
	    if (cmd.hasOption(HELP_OPTION.getOpt())) {
		new HelpFormatter().printHelp("usage help :", "\n", options, "\n", true);
		System.exit(0);
		
	    }
	} catch (ParseException ex) {
	    System.err.println("Parsing failed.  Reason: " + ex.getMessage());
	    new HelpFormatter().printHelp("runTests.sh", options);
	    System.exit(1);
	}
	return cmd;
    }
}