import pattpack.account.*;

/**
 *  This class is only a driver to show how to use
 *  a factory method.  The factory is about computer
 *  accounts of various classes referred to as <EM>Economy</EM>,
 *  <EM>Standard</EM> and <EM>Professional</EM>.
 *  For the purpose of this exercise, only <EM>Economy</EM>
 *  accounts are implemented.
 */
public class Main {
    /**
     *  Standard entry.  The program reads a single integer.
     *  The integer stands for a login id. Different ranges
     *  of ids give accounts of different classes.
     */
    public static void main (String [] loginIDarray) {
	if (loginIDarray.length != 1) {
	    System.err.println ("Command requires an argument");
	    System.exit (1);
	}
	int loginId = -1;
	try { loginId = Integer.parseInt (loginIDarray [0]); }
	catch (NumberFormatException ex) {
	    System.err.println ("Argument must be an integer");
	    System.exit (1);
	}
	FactoryMethodIF factory = null;
	if (1000 < loginId && loginId <= 5000)
	    factory = new FactoryMethodEconomy ();
//      Standard and professional factories haven't been code, yet
//	else if (5000 < loginId && loginId <= 8000)
//	    factory = new FactoryMethodStandard ();
//	else if (8000 < loginId && loginId <= 9999)
//	    factory = new FactoryMethodProfessonal ();
	else {
	    System.err.println ("Argument out of range");
	    System.exit (1);
	}
	// Note how the following code is independent of the
        // account type: economy, standard or professional. 
	User user = factory.createUser (loginId);
	System.out.println (user);
    }
}