Laravel: Skip time slots from Carbon\CarbonPeriod some time ranges - php

Question

I'm developing a booking system for a various packages having different durations for each. The customer should get available time slots from a selected date. The date may contain different package bookings with different time intervals. So, What I'm trying to do is to extract available time slots on the date by skipping all booked time slots.
Expected output is:
08:00 AM
10:30 AM // 09:00 AM has a booking. and its duration is 1.5 hours
11:30 AM // The current package has 1 hour duration
... until the shop closes for eg 08:00 PM
I'm using CarbonPeriod to get list of time slots. But, I can't apply the filters to skip all booked time slots.
$hours = new CarbonPeriod(
$opening,
$this->duration() . ' minutes',
$closing->subMinutes($this->duration())
);
$hours->filter(function ($date) use ($booked) {
$toSkip = [];
foreach ($booked as $bookedItem) {
$bookingTime = Carbon::parse($bookedItem->time);
$completingTime = Carbon::parse($bookedItem->time)->addMinutes($bookedItem->package->duration());
if ($date->isBetween($bookingTime, $completingTime)) {
array_push($toSkip, $date);
}
}
return !in_array($date, $toSkip);
});
Any help would be highly appreciated!

Answer 1

If you don't want to reinvent the wheel, this sounds like a job for spatie/opening-hours or the version dedicated to Carbon: cmixin/business-time
Definition looks like:
BusinessTime::enable(Carbon::class, [
'monday' => ['09:00-12:00', '13:00-18:00'],
'tuesday' => ['09:00-12:00', '13:00-18:00'],
'wednesday' => ['09:00-12:00'],
'thursday' => ['09:00-12:00', '13:00-18:00'],
'friday' => ['09:00-12:00', '13:00-20:00'],
'saturday' => ['09:00-12:00', '13:00-16:00'],
]);
Then with CarbonPeriod, use the custom step:
$period = CarbonPeriod::create(
$opening,
static fn ($date) => $date->nextOpen(),
$closing,
);
foreach ($period as $slot) {
echo "$slot\n";
}
You also can easily convert AM/PM string to h0-23 format with:
Carbon::parse('11:20 PM')->format('H:i')