<?php

namespace Helper;

use DateTime;

/**
 * DateTime helpers
 *
 * @package helper
 * @author  Frederic Guillot
 */
class Dt extends \Core\Base
{
    /**
     * Get duration in seconds into human format
     *
     * @access public
     * @param  integer  $seconds
     * @return string
     */
    public function duration($seconds)
    {
        if ($seconds == 0) {
            return 0;
        }

        $dtF = new DateTime("@0");
        $dtT = new DateTime("@$seconds");
        return $dtF->diff($dtT)->format('%a days, %h hours, %i minutes and %s seconds');
    }

    /**
     * Get the age of an item in quasi human readable format.
     * It's in this format: <1h , NNh, NNd
     *
     * @access public
     * @param  integer    $timestamp    Unix timestamp of the artifact for which age will be calculated
     * @param  integer    $now          Compare with this timestamp (Default value is the current unix timestamp)
     * @return string
     */
    public function age($timestamp, $now = null)
    {
        if ($now === null) {
            $now = time();
        }

        $diff = $now - $timestamp;

        if ($diff < 900) {
            return t('<15m');
        }
        if ($diff < 1200) {
            return t('<30m');
        }
        else if ($diff < 3600) {
            return t('<1h');
        }
        else if ($diff < 86400) {
            return '~'.t('%dh', $diff / 3600);
        }

        return t('%dd', ($now - $timestamp) / 86400);
    }

    /**
     * Get all hours for day
     *
     * @access public
     * @return array
     */
    public function getDayHours()
    {
        $values = array();

        foreach (range(0, 23) as $hour) {
            foreach (array(0, 30) as $minute) {
                $time = sprintf('%02d:%02d', $hour, $minute);
                $values[$time] = $time;
            }
        }

        return $values;
    }

    /**
     * Get all days of a week
     *
     * @access public
     * @return array
     */
    public function getWeekDays()
    {
        $values = array();

        foreach (range(1, 7) as $day) {
            $values[$day] = $this->getWeekDay($day);
        }

        return $values;
    }

    /**
     * Get the localized day name from the day number
     *
     * @access public
     * @param  integer   $day  Day number
     * @return string
     */
    public function getWeekDay($day)
    {
        return dt('%A', strtotime('next Monday +'.($day - 1).' days'));
    }
}