package pt.ist.renderers.extensions.validators;

import org.joda.time.LocalDate;

import pt.ist.renderers.components.HtmlSimpleValueComponent;
import pt.ist.renderers.extensions.DateTimeInputRenderer.DateTimeConverter;
import pt.ist.renderers.validators.HtmlChainValidator;
import pt.ist.renderers.validators.HtmlValidator;

public class LocalDateValidator extends HtmlValidator {

    private boolean required;
    private LocalDate calculatedDate;

    public LocalDateValidator() {
	super();
	setKey(true);
    }

    public LocalDateValidator(HtmlChainValidator htmlChainValidator) {
	super(htmlChainValidator);
	setKey(true);
    }

    public boolean isRequired() {
	return this.required;
    }

    public void setRequired(boolean required) {
	this.required = required;
    }

    @Override
    public void performValidation() {
	HtmlSimpleValueComponent component = (HtmlSimpleValueComponent) getComponent();

	String value = component.getValue();

	if (value == null || value.length() == 0) {
	    setMessage("renderers.validator.dateTime.required");
	    setValid(!isRequired());
	} else {
	    if (value.equals(DateTimeConverter.INVALID)) {
		setMessage("renderers.validator.dateTime.invalid");
		setValid(false);
	    } else if (value.equals(DateTimeConverter.INCOMPLETE)) {
		setMessage("renderers.validator.dateTime.incomplete");
		setValid(false);
	    } else {
		String[] dateParts = value.split("/");

		if (dateParts.length == 3) {
		    try {

			int day = Integer.valueOf(dateParts[0]);
			int month = Integer.valueOf(dateParts[1]);
			int year = Integer.valueOf(dateParts[2]);
			calculatedDate = new LocalDate(year, month, day);

		    } catch (NumberFormatException e) {
			setMessage("renderers.validator.dateTime.notNumbers");
			setValid(false);
		    } catch (IllegalArgumentException e) {
			setMessage("renderers.validator.dateTime.invalid");
			setValid(false);
		    }
		} else {
		    setMessage("renderers.validator.dateTime.invalid");
		    setValid(false);
		}
	    }
	}
    }

    protected LocalDate getCalculatedDate() {
	if(isValid()) {
	    return calculatedDate;
	} else {
	    return null;
	}
    }

    private boolean inRange(int value, int min, int max) {
	return value >= min && value <= max;
    }

}