DateValidator

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

public class DateValidator extends BaseValidator implements GracieValidator{
    
    public DateValidator() {
        
    }
    
    public static final String GLOBAL_DATE_FORMAT = Util.GLOBAL_DATE_FORMAT;
    public static final String CUSTOMER_DATE_FORMAT = "DD/MM/YYYY";
    
    /**
     * Validation Rule: Validate the input text whether it is valid date string or not by using global date format
     * @param inputText          Input string text
     * @return boolean           Return true when the input text is valid date string or not by using global date format,
     *                           otherwise return false.
     */
    public static boolean validateDateByDefaultFormat(String inputText) {
        return DateValidator.validateDate(inputText, DateValidator.GLOBAL_DATE_FORMAT);
    }
    
    /**
     * Validation Rule: Validate the input text whether it is valid date string or not by using global date format
     * @param inputText          Input string text
     * @param fieldErrorParam    Field error tag parameter
     * @param fieldErrorMessage  Field error message
     * @return boolean           Return true when the input text is valid date string or not by using global date format,
     *                           otherwise return false.
     */
    public static boolean validateDateByDefaultFormat(String inputText, String fieldErrorParam, String fieldErrorMessage) {
        boolean isValid = DateValidator.validateDateByDefaultFormat(inputText);
        
        if (!isValid) {
            addFieldErrorMessage(fieldErrorParam, fieldErrorMessage);
        }
        
        return isValid;
    }
    
    /**
     * Validation Rule: Validate the input text whether it is valid date string or not by using global date format
     * @param inputText          Input string text
     * @param fieldErrorParam    Field error tag parameter
     * @param bundle             Language property file id
     * @param key                Message key
     * @param defaultMessage     Default message
     * @param arguments          The arguments of message
     * @return boolean           Return true when the input text is valid date string or not by using global date format,
     *                           otherwise return false.
     */
    public static boolean validateDateByDefaultFormat(String inputText, String fieldErrorParam, 
            String bundle, String key, String defaultMessage, String[] arguments) {
        boolean isValid = DateValidator.validateDateByDefaultFormat(inputText);
        
        if (!isValid) {
            String fieldErrorMessage = MessageUtil.getText(bundle, key, defaultMessage, arguments);
            addFieldErrorMessage(fieldErrorParam, fieldErrorMessage);
        }
        
        return isValid;
    }
    
    
    /**
     * Validation Rule: Validate the input text whether it is valid date string or not by using customer date format
     * @param inputText          Input string text
     * @return boolean           Return true when the input text is valid date string or not by using customer date format,
     *                           otherwise return false.
     */
    public static boolean validateDateByCustomerFormat(String inputText) {       
        return DateValidator.validateDate(inputText, DateValidator.CUSTOMER_DATE_FORMAT);
    }
    
    /**
     * Validation Rule: Validate the input text whether it is valid date string or not by using customer date format
     * @param inputText          Input string text
     * @param fieldErrorParam    Field error tag parameter
     * @param fieldErrorMessage  Field error message
     * @return boolean           Return true when the input text is valid date string or not by using customer date format,
     *                           otherwise return false.
     */
    public static boolean validateDateByCustomerFormat(String inputText, String fieldErrorParam, String fieldErrorMessage) {       
        boolean isValid = DateValidator.validateDateByCustomerFormat(inputText);
        
        if (!isValid) {
            addFieldErrorMessage(fieldErrorParam, fieldErrorMessage);
        }
        
        return isValid;
    }
    
    /**
     * Validation Rule: Validate the input text whether it is valid date string or not by using customer date format
     * @param inputText          Input string text
     * @param fieldErrorParam    Field error tag parameter
     * @param bundle             Language property file id
     * @param key                Message key
     * @param defaultMessage     Default message
     * @param arguments          The arguments of message
     * @return boolean           Return true when the input text is valid date string or not by using customer date format,
     *                           otherwise return false.
     */
    public static boolean validateDateByCustomerFormat(String inputText, String fieldErrorParam, 
            String bundle, String key, String defaultMessage, String[] arguments) {     
        boolean isValid = DateValidator.validateDateByCustomerFormat(inputText);
        
        if (!isValid) {
            String fieldErrorMessage = MessageUtil.getText(bundle, key, defaultMessage, arguments);
            addFieldErrorMessage(fieldErrorParam, fieldErrorMessage);
        }
        
        return isValid;
    }
    
    
    /**
     * Validation Rule: Validate the input text whether it is valid date string or not by using specified date format
     * @param inputText          Input string text
     * @return boolean           Return true when the input text is valid date string or not by using specified date format,
     *                           otherwise return false.
     */
    private static boolean validateDate(String inputText, String format) {
        boolean isValid = false;
        
        try {
            if (!Util.isEmpty(inputText)) {
                DateFormat formatter = new SimpleDateFormat(format);
                Date date = formatter.parse(inputText);
                 
                if (formatter.format(date).equalsIgnoreCase(inputText)) {
                    isValid = true;
                } else {
                    isValid = false;
                }
            } else {
                isValid = true;
            }
        } catch (Exception e) {
            isValid = false;
        }
        
        return isValid;
    }
    
	public boolean isValid(String inputText) {
		return validateDateByDefaultFormat(inputText);
	}

	public boolean isValid(String inputText, String fieldErrorParam, String bundle, String key, String defaultMessage, String[] arguments) {
		return DateValidator.validateDateByDefaultFormat(inputText, fieldErrorParam, bundle, key, defaultMessage, arguments);
	}

	public boolean isValid(String inputText, String fieldErrorParam, String fieldErrorMessage) {
		return DateValidator.validateDateByDefaultFormat(inputText, fieldErrorParam, fieldErrorMessage);
	}
	
	public boolean isValid(String inputText, Object[] objs) {
		String format = (String) objs[0];
		return validateDate(inputText,format);
	}

}