package com.michaelthomas.mystrutshelloworld;

public class Login extends WebappSupport {

    public String execute() throws Exception {

        if (isInvalid(getUsername())) return INPUT;

        if (isInvalid(getPassword())) return INPUT;
        
        if (isInvalidUserPassword(getUsername(), getPassword())) return INPUT;

        return SUCCESS;
    }

    private boolean blnReturn;
    private boolean isInvalidUserPassword(String usernameCheck, String passwordCheck) {
    	
    	if ( usernameCheck.equals("test") && passwordCheck.equals("password") ) {
    		//Good username & password!
    		blnReturn = false;
    	} else {
            //Invalid login for Username/Password

    		//This displays at the top where the ActionError tag is located.
    		this.addActionError(getText("error_action.login.invalid_user_password"));

    		if ( ! usernameCheck.equals("test") ) {
    			//username is invalid. Display by the field.
    			this.addFieldError("username", getText("error_field.username.invalid"));
    		}
    		
    		if ( usernameCheck.equals("test") && ! passwordCheck.equals("password") ) {
    			//username ok, password is invalid. Display by the field.
    			this.addFieldError("password", getText("error_field.password.invalid"));
    		}

    		String strUsername = getUsername();
    		
    		blnReturn = true;
    	}
        return (blnReturn);
    }

    private boolean isInvalid(String value) {
        return (value == null || value.length() == 0);
    }


}