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<?php
Prado::using('Application.dto.CalendarGridDayDTO');
Prado::using('Application.dto.GridEventDTO');
class CalendarGridDTO {
public $DateFrom;
public $DateTo;
public $Weeks = [];
public function __construct(array $events, DateTime $dateFrom, DateTime $dateTo) {
$this->DateFrom = DateTimeImmutable::createFromMutable($dateFrom);
$this->DateTo = DateTimeImmutable::createFromMutable($dateTo);
$date = $this->DateFrom;
$days = [];
$previousDay = NULL;
while ($date <= $this->DateTo) {
$day = $this->_getGridDay($date, $events, $previousDay);
$days[] = $day;
$previousDay = $day;
$date = $date->modify('+1 day');
}
$this->Weeks = array_chunk($days, 7);
}
private function _getContinuedEventGridPositions(
CalendarGridDayDTO $day,
CalendarGridDayDTO $previousDay = NULL) {
$eventPositions = [];
if ($previousDay) {
foreach ($day->Events as $event) {
if (in_array($event, $previousDay->Events)) {
$eventPositions[] = $event->GridPosition;
}
}
}
return $eventPositions;
}
private function _alignEvents(array $eventPositions, array $events) {
$previousCount = count($eventPositions);
foreach ($events as $event) {
if ($event->GridPosition === NULL) {
$event->GridPosition = min(
array_diff(
range(0, count($events) + $previousCount),
$eventPositions
)
);
$eventPositions[] = $event->GridPosition;
}
}
usort($events, ['GridEventDTO', '__compare']);
return $events;
}
private function _fillEventGrid(array $events) {
$previousEvent = -1;
foreach ($events as $event) {
$eventStep = $event->GridPosition - $previousEvent;
if ($eventStep > 1) {
array_splice(
$events, $previousEvent + 1, 0, array_fill(0, $eventStep - 1, NULL)
);
}
$previousEvent = $event->GridPosition;
}
return $events;
}
protected function _getGridDay(DateTimeImmutable $date,
array $events,
CalendarGridDayDTO $previousDay = NULL) {
$day = new CalendarGridDayDTO($date, $events);
$eventPositions = $this->_getContinuedEventGridPositions($day, $previousDay);
$day->Events = $this->_alignEvents($eventPositions, $day->Events);
$day->Events = $this->_fillEventGrid($day->Events);
return $day;
}
}
?>
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