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| <?php | |
| class Interval | |
| { | |
| const SECONDS_IN_MINUTE = 60; | |
| const SECONDS_IN_HOUR = self::SECONDS_IN_MINUTE * 60; | |
| const SECONDS_IN_DAY = self::SECONDS_IN_HOUR * 24; | |
| const SECONDS_IN_WEEK = self::SECONDS_IN_DAY * 7; | |
| private $startWeekTimestamp; | |
| private $endWeekTimestamp; | |
| /** | |
| * Interval constructor. | |
| * | |
| * @param int $startDay of the week 0 - Sunday, 6 - Saturday | |
| * @param int $startHour 0-23 | |
| * @param int $startMinute 0-59 | |
| * @param int $endDay of the week 0 - Sunday, 6 - Saturday | |
| * @param int $endHour 0-23 | |
| * @param int $endMinute 0-59 | |
| */ | |
| public function __construct( | |
| int $startDay, | |
| int $startHour, | |
| int $startMinute, | |
| int $endDay, | |
| int $endHour, | |
| int $endMinute | |
| ) { | |
| if ($startDay < 0 || $startDay > 6) { | |
| throw new \RuntimeException('Start day should be in interval between 0 and 6'); | |
| } | |
| if ($endDay < 0 || $endDay > 6) { | |
| throw new \RuntimeException('End day should be in interval between 0 and 6'); | |
| } | |
| $startWeekTimestamp = | |
| $startDay * self::SECONDS_IN_DAY + | |
| $startHour * self::SECONDS_IN_HOUR + | |
| $startMinute * self::SECONDS_IN_MINUTE; | |
| $endWeekTimestamp = | |
| $endDay * self::SECONDS_IN_DAY + | |
| $endHour * self::SECONDS_IN_HOUR + | |
| $endMinute * self::SECONDS_IN_MINUTE; | |
| if ($startWeekTimestamp >= $endWeekTimestamp) { | |
| throw new \RuntimeException('Start of interval should be before end of it'); | |
| } | |
| $this->startWeekTimestamp = $startWeekTimestamp; | |
| $this->endWeekTimestamp = $endWeekTimestamp; | |
| } | |
| /** | |
| * @return int | |
| */ | |
| public function getStartWeekTimestamp(): int | |
| { | |
| return $this->startWeekTimestamp; | |
| } | |
| /** | |
| * @return int | |
| */ | |
| public function getEndWeekTimestamp(): int | |
| { | |
| return $this->endWeekTimestamp; | |
| } | |
| } | |
| class Scheduler | |
| { | |
| /** | |
| * @var Interval[] | |
| */ | |
| private $intervals = []; | |
| /** | |
| * @var \DateTimeZone | |
| */ | |
| private $timezone; | |
| /** | |
| * Scheduler constructor. | |
| * | |
| * @param Interval[] $intervals | |
| * @param DateTimeZone $timezone | |
| */ | |
| public function __construct(array $intervals = [], \DateTimeZone $timezone) | |
| { | |
| $this->timezone = $timezone; | |
| if (!count($intervals)) { | |
| throw new \RuntimeException('You should have intervals'); | |
| } | |
| foreach ($intervals as $interval) { | |
| $this->intervals[$interval->getStartWeekTimestamp()] = $interval; | |
| } | |
| ksort( | |
| $this->intervals | |
| ); // we want to make sure intervals are ordered to be able iterate it from the firs to last | |
| // @todo: Need to check that we don't have overlaps | |
| } | |
| /** | |
| * @param DateTime $date | |
| * | |
| * @return int <=0 amount of seconds to the end of current interval, | |
| * >0 - number of seconds to the next interval | |
| */ | |
| public function getDelay(\DateTime $date): int | |
| { | |
| $date->setTimezone($this->timezone); | |
| $weekTimestamp = | |
| intval($date->format('w')) * Interval::SECONDS_IN_DAY + | |
| intval($date->format('H')) * Interval::SECONDS_IN_HOUR + | |
| intval($date->format('i')) * Interval::SECONDS_IN_MINUTE + | |
| intval($date->format('s')); | |
| $i = 1; | |
| foreach ($this->intervals as $interval) { | |
| if ( // We are in an interval | |
| $weekTimestamp >= $interval->getStartWeekTimestamp() && | |
| $weekTimestamp <= $interval->getEndWeekTimestamp() | |
| ) { | |
| return ($interval->getEndWeekTimestamp() - $weekTimestamp) * (-1); | |
| } elseif ( // we by passed needed interval | |
| $weekTimestamp < $interval->getStartWeekTimestamp() | |
| ) { | |
| return $interval->getStartWeekTimestamp() - $weekTimestamp; | |
| } elseif ( // Last Interval in the collection, need to get time to the first interval | |
| count($this->intervals) == $i | |
| ) { | |
| $timeToFirstInterval = array_values($this->intervals)[0]->getStartWeekTimestamp(); | |
| return Interval::SECONDS_IN_WEEK - $weekTimestamp + $timeToFirstInterval; | |
| } | |
| $i++; | |
| } | |
| return 0; | |
| } | |
| } | |
| $scheduler = new Scheduler( | |
| [ | |
| new Interval(0, 10, 0, 0, 18, 0), // Sunday 10:00 - Sunday 18:00 - normal interval | |
| new Interval(1, 10, 0, 5, 18, 0), // Monday 10:00 - Friday 18:00 - over midnight | |
| ], | |
| new DateTimeZone('Asia/Ho_Chi_minh') | |
| ); | |
| echo $scheduler->getDelay(new \DateTime('Sunday 09:00', new DateTimeZone('Asia/Ho_Chi_minh'))) . "\n"; // 1 hour to time 1*60*60 = 3600 | |
| echo $scheduler->getDelay(new \DateTime('Monday 09:00', new DateTimeZone('Asia/Ho_Chi_minh'))) . "\n"; // 1 hour to time 1*60*60 = 3600 | |
| echo $scheduler->getDelay(new \DateTime('Friday 17:59', new DateTimeZone('Asia/Ho_Chi_minh'))) . "\n"; // 1 min to the end -60 | |
| echo $scheduler->getDelay(new \DateTime('Friday 17:59:59', new DateTimeZone('Asia/Ho_Chi_minh'))) . "\n"; // 1 sec to the end -1 | |
| echo $scheduler->getDelay(new \DateTime('Friday 17:58', new DateTimeZone('Asia/Ho_Chi_minh'))) . "\n"; // 2 mins to the end -120 | |
| echo $scheduler->getDelay(new \DateTime('Saturday 10:00', new DateTimeZone('Asia/Ho_Chi_minh'))) . "\n"; // 1 day to next week interval 24*60*60 = 86400 | |
| echo $scheduler->getDelay(new \DateTime('now') . "\n"; // ? |
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