Add DTSTAMP to ICS generator, also use UTC timestamps instead of defi…

…ning timezone
spatie · Feb 28, 2023 · c2eb4d3 · c2eb4d3
1 parent 40b29c7
commit c2eb4d3
Showing 1 changed file with 6 additions and 6 deletions.
diff --git a/src/Generators/Ics.php b/src/Generators/Ics.php
@@ -13,7 +13,7 @@ class Ics implements Generator
     /** @var string {@see https://www.php.net/manual/en/function.date.php} */
     protected $dateFormat = 'Ymd';
     /** @var string */
-    protected $dateTimeFormat = 'e:Ymd\THis';
+    protected $dateTimeFormat = 'Ymd\THis';
 
     /** @var array<non-empty-string, non-empty-string> */
     protected $options = [];
@@ -41,13 +41,13 @@ public function generate(Link $link): string
         $dateTimeFormat = $link->allDay ? $this->dateFormat : $this->dateTimeFormat;
 
         if ($link->allDay) {
-            $url[] = 'DTSTAMP;TZID='.$link->from->format($dateTimeFormat);
-            $url[] = 'DTSTART:'.$link->from->format($dateTimeFormat);
+            $url[] = 'DTSTAMP:'.gmdate($dateTimeFormat, $link->from->getTimestamp()).'Z';
+            $url[] = 'DTSTART:'.gmdate($dateTimeFormat, $link->from->getTimestamp()).'Z';
             $url[] = 'DURATION:P'.(max(1, $link->from->diff($link->to)->days)).'D';
         } else {
-            $url[] = 'DTSTAMP;TZID='.$link->from->format($dateTimeFormat);
-            $url[] = 'DTSTART;TZID='.$link->from->format($dateTimeFormat);
-            $url[] = 'DTEND;TZID='.$link->to->format($dateTimeFormat);
+            $url[] = 'DTSTAMP:'.gmdate($dateTimeFormat, $link->from->getTimestamp()).'Z';
+            $url[] = 'DTSTART:'.gmdate($dateTimeFormat, $link->from->getTimestamp()).'Z';
+            $url[] = 'DTEND:'.gmdate($dateTimeFormat, $link->to->getTimestamp()).'Z';
         }
 
         if ($link->description) {