56 lines
1.8 KiB
PHP
56 lines
1.8 KiB
PHP
<?php
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declare(strict_types=1);
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namespace App\Services\WorkingDays;
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use App\Services\Utils\DurationConvertor;
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/**
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* Solves the duration of a given period based on working days and return new end date.
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*/
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class DurationSolver
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{
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protected const int MAX_ITERATIONS = 100;
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public function __construct(
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protected readonly WorkingDayDeterminerInterface $workingDayDeterminer,
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protected readonly DurationConvertor $durationConvertor,
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) {
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}
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/**
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* Calculate the duration of a given period based on working days.
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* @param \DateTimeImmutable $startDate
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* @param \DateTimeImmutable $endDate
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* @return \DateTimeImmutable
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* @throws \Exception
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*/
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public function calculateDuration(
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\DateTimeImmutable $startDate,
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\DateTimeImmutable $endDate,
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): \DateTimeImmutable {
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$loopId = 0;
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$requiredWorkingDaysCount = (int) ($startDate->setTime(0, 0)->diff($endDate->setTime(0, 0))->format('%a')) + 1;
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do {
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$workingDaysCount = (int) ($startDate->setTime(0, 0)->diff($endDate->setTime(0, 0))->format('%a')) + 1;
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$workingDaysCountInInterval = $this->workingDayDeterminer->getWorkingDaysCount($startDate, $workingDaysCount);
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if ($workingDaysCountInInterval >= $requiredWorkingDaysCount) {
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// there is no weekends or holidays in the given interval
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break;
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} else {
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$endDate = $endDate->add(new \DateInterval(sprintf('P%dD', $requiredWorkingDaysCount - $workingDaysCountInInterval)));
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if ($loopId > static::MAX_ITERATIONS) {
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throw new \InvalidArgumentException('No working days found in the given interval');
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}
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}
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$loopId++;
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} while ($workingDaysCount != $workingDaysCountInInterval);
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return $endDate;
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}
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}
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