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<?php |
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namespace Spatie\CalendarLinks\Generators; |
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use DateTimeZone; |
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use Spatie\CalendarLinks\Generator; |
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use Spatie\CalendarLinks\Link; |
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/** |
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* @see https://github.com/InteractionDesignFoundation/add-event-to-calendar-docs/blob/master/services/yahoo.md |
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*/ |
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class Yahoo implements Generator |
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{ |
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/** @var string {@see https://www.php.net/manual/en/function.date.php} */ |
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protected $dateFormat = 'Ymd'; |
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protected $dateTimeFormat = 'Ymd\THis\Z'; |
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/** {@inheritdoc} */ |
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public function generate(Link $link): string |
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{ |
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$url = 'https://calendar.yahoo.com/?v=60&view=d&type=20'; |
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$dateTimeFormat = $link->allDay ? $this->dateFormat : $this->dateTimeFormat; |
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if ($link->allDay) { |
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$url .= '&st='.$link->from->format($dateTimeFormat); |
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$url .= '&dur=allday'; |
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} else { |
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$utcStartDateTime = (clone $link->from)->setTimezone(new DateTimeZone('UTC')); |
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$utcEndDateTime = (clone $link->to)->setTimezone(new DateTimeZone('UTC')); |
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$url .= '&st='.$utcStartDateTime->format($dateTimeFormat); |
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/** |
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* Yahoo has a bug on parsing end date parameter: it ignores timezone, assuming |
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* that it's specified in user's tz. In order to bypass it, we can use duration ("dur") |
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* parameter instead of "et", but this parameter has a limitation cause by it's format HHmm: |
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* the max duration is 99hours and 59 minutes (dur=9959). |
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*/ |
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$maxDurationInSecs = (59 * 60 * 60) + (59 * 60); |
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$canUseDuration = $maxDurationInSecs > ($utcEndDateTime->getTimestamp() - $utcStartDateTime->getTimestamp()); |
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if ($canUseDuration) { |
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$dateDiff = $utcStartDateTime->diff($utcEndDateTime); |
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$url .= '&dur='.$dateDiff->format('%H%I'); |
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} else { |
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$url .= '&et='.$utcEndDateTime->format($dateTimeFormat); |
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} |
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} |
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$url .= '&title='.urlencode($link->title); |
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if ($link->description) { |
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$url .= '&desc='.urlencode($link->description); |
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} |
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if ($link->address) { |
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$url .= '&in_loc='.urlencode($link->address); |
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} |
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return $url; |
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} |
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} |
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spatie /
calendar-links
