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<?php |
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declare(strict_types=1); |
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namespace PhpCfdi\SatCatalogos\CFDI; |
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use DateTimeImmutable; |
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use PhpCfdi\SatCatalogos\Exceptions\SatCatalogosLogicException; |
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class HusoHorario |
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{ |
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/** @var string */ |
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private $text; |
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/** @var HusoHorarioEstacion */ |
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private $verano; |
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/** @var HusoHorarioEstacion */ |
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private $invierno; |
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public function __construct(string $text, HusoHorarioEstacion $verano, HusoHorarioEstacion $invierno) |
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{ |
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$this->text = $text; |
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$this->verano = $verano; |
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$this->invierno = $invierno; |
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if ($verano->tieneCambioHorario() !== $invierno->tieneCambioHorario()) { |
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throw new SatCatalogosLogicException( |
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'No se puede crear un huso horario con estaciones donde solo una tiene cambio de horario' |
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); |
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} |
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if (! $verano->tieneCambioHorario() and $verano->diferencia() !== $invierno->diferencia()) { |
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throw new SatCatalogosLogicException( |
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'El huso horario no tiene cambio de horario de verano pero tiene no tiene la misma diferencia horaria' |
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); |
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} |
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} |
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public function nombre(): string |
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{ |
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return $this->text; |
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} |
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public function verano(): HusoHorarioEstacion |
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{ |
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return $this->verano; |
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} |
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public function invierno(): HusoHorarioEstacion |
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{ |
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return $this->invierno; |
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} |
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public function convertToDateTime(string $partialDate): DateTimeImmutable |
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{ |
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$date = $this->dateTimeFromPartial($partialDate, $this->invierno->diferencia()); |
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// time zone does not have DST |
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if (! $this->verano->tieneCambioHorario()) { |
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return $date; |
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} |
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$year = (int) $date->format('Y'); |
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$dstSince = $this->dstLimit($year, $this->verano, $this->invierno->diferencia()); |
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$dstUntil = $this->dstLimit($year, $this->invierno, $this->invierno->diferencia()); |
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// is outside DST, nothing to change |
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if ($date < $dstSince || $date >= $dstUntil) { |
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return $date; |
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} |
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// is DST |
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$dstHoursDiff = $this->verano->diferencia() - $this->invierno->diferencia(); |
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$dstSince = $dstSince->modify(sprintf('%d hours', $dstHoursDiff)); |
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$altered = $this->dateTimeFromPartial($partialDate, $this->verano->diferencia()); |
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if ($date < $dstSince) { |
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$altered = $altered->modify(sprintf('%d hours', $dstHoursDiff)); |
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} |
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return $altered; |
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} |
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private function dateTimeFromPartial(string $partialDate, int $hoursDiff): DateTimeImmutable |
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{ |
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$sign = $hoursDiff < 0 ? '-' : '+'; |
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$iso8601 = sprintf('%s%s%02d00', $partialDate, $sign, abs($hoursDiff)); |
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/** @noinspection PhpUnhandledExceptionInspection */ |
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return new DateTimeImmutable($iso8601); |
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} |
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private function dstLimit(int $year, HusoHorarioEstacion $limit, int $hoursDiff): DateTimeImmutable |
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{ |
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/** @noinspection PhpUnhandledExceptionInspection */ |
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$date = new DateTimeImmutable(sprintf('%04d-%02d-01 00:00:00 UTC', $year, $limit->mesNumerico())); |
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$date = $date->modify($limit->diaExpresion()); |
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$date = $date->modify(sprintf('%d hours', $limit->horaNumero() - $hoursDiff)); |
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return $date; |
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} |
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} |
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phpcfdi /
sat-catalogos
