/**
 * Copyright (C) 2022, Tim Holloway
 *
 * Date written: Jan 9, 2022
 * Author: Tim Holloway <timh@mousetech.com>
 */
package com.mousetech.gourmetj.utils;

import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import javax.faces.convert.ConverterException;
import javax.faces.convert.FacesConverter;
import javax.faces.validator.ValidatorException;

import org.apache.commons.lang3.StringUtils;

/**
 * Converts complex time durations, using TimeFormatter
 * 
 * @author timh
 * @since Jan 9, 2022
 */
@FacesConverter("com.mousetech.gourmetj.utils.TimeConverter")
public class TimeConverter implements Converter<Integer> {

	/**
	 * Parse incoming time string before passing to backing bean.
	 */
	@Override
	public Integer getAsObject(FacesContext context,
			UIComponent component, String value) {
		if (StringUtils.isBlank(value)) {
			return null;
		}
		Long tv = TimeFormatter.parseTime(value);
		if (tv == null) {
			throw new ConverterException(
					new FacesMessage("Invalid time"));
		}
		return tv.intValue();
	}

	/**
	 * Format display/edit text from backing bean to View
	 */
	@Override
	public String getAsString(FacesContext context,
			UIComponent component, Integer value) {
		return TimeFormatter.formatTime(Long.valueOf(value));
	}
}