Your IP : 192.168.165.1
<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Time splitting method that generates predictions regularly.
*
* @package core_analytics
* @copyright 2019 David Monllao {@link http://www.davidmonllao.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace core_analytics\local\time_splitting;
defined('MOODLE_INTERNAL') || die();
/**
* Time splitting method that generates predictions periodically.
*
* @package core_analytics
* @copyright 2019 David Monllao {@link http://www.davidmonllao.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
abstract class past_periodic extends periodic implements before_now {
/**
* Gets the next range with start on the provided time.
*
* The next range is based on the past period so we substract this
* range's periodicity from $time.
*
* @param \DateTimeImmutable $time
* @return array
*/
protected function get_next_range(\DateTimeImmutable $time) {
$end = $time->getTimestamp();
$start = $time->sub($this->periodicity())->getTimestamp();
if ($start < $this->analysable->get_start()) {
// We skip the first range generated as its start is prior to the analysable start.
return false;
}
return [
'start' => $start,
'end' => $end,
'time' => $end
];
}
/**
* Get the start of the first time range.
*
* @return int A timestamp.
*/
protected function get_first_start() {
return $this->analysable->get_start();
}
/**
* Guarantees that the last range dates end right now.
*
* @param array $ranges
* @return array
*/
protected function update_last_range(array $ranges) {
$lastrange = end($ranges);
if ($lastrange['time'] > time()) {
// We just need to wait in this case.
return $lastrange;
}
$timetoenddiff = time() - $lastrange['time'];
$ranges[count($ranges) - 1] = [
'start' => $lastrange['start'] + $timetoenddiff,
'end' => $lastrange['end'] + $timetoenddiff,
'time' => $lastrange['time'] + $timetoenddiff,
];
return $ranges;
}
}