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<?php |
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declare(strict_types=1); |
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namespace Shapin\Calendar; |
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use Shapin\Calendar\Model\Event; |
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use Shapin\Calendar\Model\RecurrenceRule; |
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class EventsFlattener |
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{ |
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public function flatten(Event $event): array |
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{ |
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if (!$event->isRecurring()) { |
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return [ |
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$event->getStartAt()->getTimestamp() => $event, |
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]; |
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} |
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$parts = $event->getRecurrenceRule()->getParts(); |
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if (!isset($parts['FREQ'])) { |
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throw new \BadMethodCallException("RecurrenceRule doesn't contains a FREQ. Not implemented yet."); |
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} |
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if (isset($parts['BYDAY']) && is_array($parts['BYDAY'])) { |
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$events = []; |
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foreach ($parts['BYDAY'] as $day) { |
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$startAt = $this->changeDateToGivenDay($event->getStartAt(), $day); |
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$endAt = $this->changeDateToGivenDay($event->getEndAt(), $day); |
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$dailyEventRecurrenceRuleParts = array_merge($parts, [ |
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'BYDAY' => $day, |
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]); |
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$dailyEvent = $this->createEventFromRecurring($event, $startAt, $endAt); |
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$dailyEvent->setRecurrenceRule(RecurrenceRule::createFromArray($dailyEventRecurrenceRuleParts)); |
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$events += $this->getAllRecurringEvents($dailyEvent); |
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} |
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return $events; |
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} |
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if (!isset($parts['BYDAY']) || !is_array($parts['BYDAY'])) { |
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return $this->getAllRecurringEvents($event); |
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} |
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throw new \BadMethodCallException('Looks like this case is not implemented yet...'); |
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} |
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private function getAllRecurringEvents(Event $event): array |
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{ |
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$freq = $event->getRecurrenceRule()->getParts()['FREQ']; |
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$startAt = $event->getStartAt(); |
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$duration = $event->getEndAt()->diff($startAt); |
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$modifier = $this->getModifier($freq); |
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$events = [$event->getStartAt()->getTimestamp() => $event]; |
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$until = $this->getLastEvent($event); |
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$nextEventStartAt = $startAt->modify($modifier); |
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while ($nextEventStartAt < $until) { |
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$newEvent = $this->createEventFromRecurring($event, $nextEventStartAt, $nextEventStartAt->add($duration)); |
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$events[$newEvent->getStartAt()->getTimestamp()] = $newEvent; |
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$nextEventStartAt = $nextEventStartAt->modify($modifier); |
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} |
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return $events; |
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} |
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private function getModifier(string $freq, int $times = 1): string |
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{ |
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if ('WEEKLY' === $freq) { |
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return "+$times week"; |
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} |
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if ('MONTHLY' === $freq) { |
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return "+$times month"; |
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} |
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throw new \BadMethodCallException("Unknown freq $freq"); |
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} |
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private function getLastEvent(Event $event): \DateTimeImmutable |
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{ |
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$parts = $event->getRecurrenceRule()->getParts(); |
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$firstEventStartAt = $event->getStartAt(); |
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if (isset($parts['UNTIL'])) { |
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return $parts['UNTIL']; |
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} |
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6 |
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if (isset($parts['COUNT'])) { |
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return $firstEventStartAt->modify($this->getModifier($parts['FREQ'], (int) $parts['COUNT'])); |
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} |
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throw new \BadMethodCallException('Not implemented recurring rule.'); |
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} |
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private function changeDateToGivenDay(\DateTimeInterface $date, string $day) |
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{ |
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$days = ['MO' => 1, 'TU' => 2, 'WE' => 3, 'TH' => 4, 'FR' => 5, 'SA' => 6, 'SU' => 0]; |
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$expectedDayNumber = $days[$day]; |
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$dateDayNumber = (int) $date->format('w'); |
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$diff = $expectedDayNumber - $dateDayNumber; |
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if (0 === $diff) { |
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return $date; |
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} |
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2 |
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if ($diff < 0) { |
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$diff += 7; |
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} |
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return $date->modify("+$diff days"); |
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} |
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private function createEventFromRecurring(Event $event, \DateTimeInterface $from, \DateTimeInterface $to): Event |
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{ |
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$newEvent = new Event($from, $to); |
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7 |
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if (null !== $summary = $event->getSummary()) { |
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$newEvent->setSummary($summary); |
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} |
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7 |
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if (null !== $description = $event->getDescription()) { |
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$newEvent->setDescription($description); |
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} |
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return $newEvent; |
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} |
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} |
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shapintv /
calendar
Loading history...
This check looks for parameters that are defined as one type in their type hint or doc comment but seem to be used as a narrower type, i.e an implementation of an interface or a subclass.
Consider changing the type of the parameter or doing an instanceof check before assuming your parameter is of the expected type.