Fix attempt for Google and "All day".

src/Generators/BaseOutlook.php

@@ -35,17 +35,15 @@ public function generate(Link $link): string
     {
         $url = $this->baseUrl();
 
-        $dateTimeFormat = $link->allDay ? $this->dateFormat : $this->dateTimeFormat;
-
-        $utcStartDateTime = (clone $link->from)->setTimezone(new DateTimeZone('UTC'));
-        $utcEndDateTime = (clone $link->to)->setTimezone(new DateTimeZone('UTC'));
-
-        $url .= '&startdt='.$utcStartDateTime->format($dateTimeFormat);
-        $url .= '&enddt='.$utcEndDateTime->format($dateTimeFormat);
-
         if ($link->allDay) {
+            $url .= '&startdt='.$link->from->format($this->dateFormat);
+            $url .= '&enddt='.$link->to->format($this->dateFormat);
             $url .= '&allday=true';
         }
+        else {
+            $url .= '&startdt='.(clone $link->from)->setTimezone(new DateTimeZone('UTC'))->format($this->dateTimeFormat);
+            $url .= '&enddt='.(clone $link->to)->setTimezone(new DateTimeZone('UTC'))->format($this->dateTimeFormat);
+        }
 
         $url .= '&subject='.$this->sanitizeString($link->title);
 

src/Generators/Google.php

@@ -15,7 +15,7 @@ class Google implements Generator
     /** @var string {@see https://www.php.net/manual/en/function.date.php} */
     protected $dateFormat = 'Ymd';
     /** @var string */
-    protected $dateTimeFormat = 'Ymd\THis\Z';
+    protected $dateTimeFormat = 'Ymd\THis';
 
     /** @psalm-var GoogleUrlParameters */
     protected array $urlParameters = [];
@@ -31,19 +31,9 @@ public function generate(Link $link): string
     {
         $url = 'https://calendar.google.com/calendar/render?action=TEMPLATE';
 
-        $utcStartDateTime = (clone $link->from)->setTimezone(new DateTimeZone('UTC'));
-        $utcEndDateTime = (clone $link->to)->setTimezone(new DateTimeZone('UTC'));
         $dateTimeFormat = $link->allDay ? $this->dateFormat : $this->dateTimeFormat;
-        $url .= '&dates='.$utcStartDateTime->format($dateTimeFormat).'/'.$utcEndDateTime->format($dateTimeFormat);
-
-        // Add timezone name if it is specified in both from and to dates and is the same for both
-        if (
-            $link->from->getTimezone() && $link->to->getTimezone()
-            && $link->from->getTimezone()->getName() === $link->to->getTimezone()->getName()
-        ) {
-            $url .= '&ctz=' . $link->from->getTimezone()->getName();
-        }
-
+        $url .= '&dates='.$link->from->format($dateTimeFormat).'/'.$link->to->format($dateTimeFormat);
+        $url .= '&ctz=' . $link->from->getTimezone()->getName();
         $url .= '&text='.urlencode($link->title);
 
         if ($link->description) {

src/Link.php

@@ -43,15 +43,20 @@ class Link
 
     public function __construct(string $title, \DateTimeInterface $from, \DateTimeInterface $to, bool $allDay = false)
     {
+        $this->from = clone $from;
+        $this->to = clone $to;
         $this->title = $title;
         $this->allDay = $allDay;
 
-        if ($from > $to) {
-            throw InvalidLink::negativeDateRange($from, $to);
+        // Ensures timezones match.
+        if ($this->from->getTimezone()->getName() !== $this->to->getTimezone()->getName()) {
+            $this->to->setTimezone($from->getTimezone());
         }
 
-        $this->from = clone $from;
-        $this->to = clone $to;
+        // Ensures from date is earlier than to date.
+        if ($this->from > $this->to) {
+            throw InvalidLink::negativeDateRange($from, $to);
+        }
     }
 
     /**
@@ -65,15 +70,15 @@ public function __construct(string $title, \DateTimeInterface $from, \DateTimeIn
      */
     public static function create(string $title, \DateTimeInterface $from, \DateTimeInterface $to, bool $allDay = false)
     {
-        // When creating all day events, we need to be in the UTC timezone as all day events are "floating" based on the user's timezone
-        if ($allDay) {
-            $startDate = new \DateTime($from->format('Y-m-d'), new \DateTimeZone('UTC'));
-            $numberOfDays = $from->diff($to)->days + 1;
+        $from_date = clone $from;
+        $to_date = clone $to;
 
-            return self::createAllDay($title, $startDate, $numberOfDays);
+        // If all day, we need to add 1 day to end date to get the correct duration.
+        if ($allDay) {
+            $to_date->modify('+1 day');
         }
 
-        return new static($title, $from, $to, $allDay);
+        return new static($title, $from_date, $to_date, $allDay);
     }
 
     /**
@@ -86,12 +91,7 @@ public static function create(string $title, \DateTimeInterface $from, \DateTime
      */
     public static function createAllDay(string $title, \DateTimeInterface $fromDate, int $numberOfDays = 1): self
     {
-        // In cases where the from date is not UTC, make sure it's UTC, size all day events are floating and non UTC dates cause bugs in the generators
-        if ($fromDate->getTimezone() !== new \DateTimeZone('UTC')) {
-            $fromDate = \DateTime::createFromFormat('Y-m-d', $fromDate->format('Y-m-d'));
-        }
-
-        $from = (clone $fromDate)->modify('midnight');
+        $from = (clone $fromDate);
         $to = (clone $from)->modify("+$numberOfDays days");
 
         return new self($title, $from, $to, true);

tests/Generators/GoogleGeneratorTest.php

@@ -36,6 +36,15 @@ public function it_correctly_generates_all_day_events_by_dates(): void
         );
     }
 
+    /** @test */
+
+    public function it_correctly_generates_all_day_events_by_dates_diff_tz(): void
+    {
+        $this->assertMatchesSnapshot(
+            $this->generator()->generate($this->createEventMultipleDaysViaStartEndWithDiffTimezoneLink())
+        );
+    }
+
     /** @test */
     public function it_can_generate_an_url_with_custom_parameters(): void
     {

tests/Generators/__snapshots__/GoogleGeneratorTest__it_can_generate_a_description_is_html_code_event_link_with_allday_flag__1.txt

@@ -1 +1 @@
-https://calendar.google.com/calendar/render?action=TEMPLATE&dates=20180201T090000Z/20180201T180000Z&ctz=UTC&text=Birthday+Party+%2B1&details=With+balloons%2C+clowns+and+stuff%0ABring+a+dog%2C+bring+a+frog.%0AThere+will+be+line+breaks+on+it.%0AProject+link+%3Ca+href%3D%22https%3A%2F%2Fgithub.com%2Fspatie%2Fcalendar-links%22%3Ecalendar-links%3C%2Fa%3E%0A%3Cimg+src%3D%22https%3A%2F%2Fgithub-ads.s3.eu-central-1.amazonaws.com%2Fcalendar-links.jpg%3Ft%3D1%22+width%3D%22419px%22+%2F%3E%0A%3Cbr%3E%0AThank+you.%0A&location=Party+Lane+1A%2C+1337+Funtown
+https://calendar.google.com/calendar/render?action=TEMPLATE&dates=20180201T090000/20180201T180000&ctz=UTC&text=Birthday+Party+%2B1&details=With+balloons%2C+clowns+and+stuff%0ABring+a+dog%2C+bring+a+frog.%0AThere+will+be+line+breaks+on+it.%0AProject+link+%3Ca+href%3D%22https%3A%2F%2Fgithub.com%2Fspatie%2Fcalendar-links%22%3Ecalendar-links%3C%2Fa%3E%0A%3Cimg+src%3D%22https%3A%2F%2Fgithub-ads.s3.eu-central-1.amazonaws.com%2Fcalendar-links.jpg%3Ft%3D1%22+width%3D%22419px%22+%2F%3E%0A%3Cbr%3E%0AThank+you.%0A&location=Party+Lane+1A%2C+1337+Funtown

tests/Generators/__snapshots__/GoogleGeneratorTest__it_can_generate_a_multiple_days_event_link__1.txt

@@ -1 +1 @@
-https://calendar.google.com/calendar/render?action=TEMPLATE&dates=20191231T230000Z/20200101T010000Z&ctz=UTC&text=New+Year&details=With+balloons%2C+clowns+and+stuff%0ABring+a+dog%2C+bring+a+frog&location=Party+Lane+1A%2C+1337+Funtown
+https://calendar.google.com/calendar/render?action=TEMPLATE&dates=20191231T230000/20200101T010000&ctz=UTC&text=New+Year&details=With+balloons%2C+clowns+and+stuff%0ABring+a+dog%2C+bring+a+frog&location=Party+Lane+1A%2C+1337+Funtown

tests/Generators/__snapshots__/GoogleGeneratorTest__it_can_generate_a_short_event_link__1.txt

@@ -1 +1 @@
-https://calendar.google.com/calendar/render?action=TEMPLATE&dates=20180201T090000Z/20180201T180000Z&ctz=UTC&text=Birthday&details=With+balloons%2C+clowns+and+stuff%0ABring+a+dog%2C+bring+a+frog&location=Party+Lane+1A%2C+1337+Funtown
+https://calendar.google.com/calendar/render?action=TEMPLATE&dates=20180201T090000/20180201T180000&ctz=UTC&text=Birthday&details=With+balloons%2C+clowns+and+stuff%0ABring+a+dog%2C+bring+a+frog&location=Party+Lane+1A%2C+1337+Funtown

tests/Generators/__snapshots__/GoogleGeneratorTest__it_can_generate_an_url_with_custom_parameters__1.txt

@@ -1 +1 @@
-https://calendar.google.com/calendar/render?action=TEMPLATE&dates=20180201T090000Z/20180201T180000Z&ctz=UTC&text=Birthday&details=With+balloons%2C+clowns+and+stuff%0ABring+a+dog%2C+bring+a+frog&location=Party+Lane+1A%2C+1337+Funtown&recur=RRULE%3AFREQ%3DDAILY
+https://calendar.google.com/calendar/render?action=TEMPLATE&dates=20180201T090000/20180201T180000&ctz=UTC&text=Birthday&details=With+balloons%2C+clowns+and+stuff%0ABring+a+dog%2C+bring+a+frog&location=Party+Lane+1A%2C+1337+Funtown&recur=RRULE%3AFREQ%3DDAILY

tests/Generators/__snapshots__/GoogleGeneratorTest__it_correctly_generates_all_day_events_by_dates__1.txt

@@ -1 +1 @@
-https://calendar.google.com/calendar/render?action=TEMPLATE&dates=20240125/20240131&ctz=UTC&text=All+day+bugs&details=Testing+all+day
+https://calendar.google.com/calendar/render?action=TEMPLATE&dates=20240125/20240131&ctz=Pacific/Wake&text=All+day+bugs&details=Testing+all+day

tests/Generators/__snapshots__/GoogleGeneratorTest__it_correctly_generates_all_day_events_by_dates_diff_tz__1.txt

@@ -0,0 +1 @@
+https://calendar.google.com/calendar/render?action=TEMPLATE&dates=20240125/20240201&ctz=Pacific/Wake&text=All+day+bugs&details=Testing+all+day

tests/Generators/__snapshots__/GoogleGeneratorTest__it_correctly_generates_all_day_events_by_days__1.txt

@@ -1 +1 @@
-https://calendar.google.com/calendar/render?action=TEMPLATE&dates=20240125/20240130&ctz=UTC&text=All+day+bugs&details=Testing+all+day
+https://calendar.google.com/calendar/render?action=TEMPLATE&dates=20240125/20240130&ctz=Pacific/Wake&text=All+day+bugs&details=Testing+all+day

tests/Generators/__snapshots__/IcsGeneratorTest__it_correctly_generates_all_day_events_by_dates__1.txt

@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 VERSION:2.0
 PRODID:Spatie calendar-links
 BEGIN:VEVENT
-UID:8fe3eececcd6b020db3b47ef55e7cf89
+UID:cb8469bae9cf10a9ee8f1179c6a932f5
 SUMMARY:All day bugs
 DTSTAMP:20240125
 DTSTART:20240125

tests/Generators/__snapshots__/IcsGeneratorTest__it_correctly_generates_all_day_events_by_days__1.txt

@@ -2,7 +2,7 @@ BEGIN:VCALENDAR
 VERSION:2.0
 PRODID:Spatie calendar-links
 BEGIN:VEVENT
-UID:a05fc4dac68ae6064aaae69dcdfd60a6
+UID:b4be522f87b9894dadd2b9cd5479136b
 SUMMARY:All day bugs
 DTSTAMP:20240125
 DTSTART:20240125

tests/TestCase.php

@@ -50,7 +50,7 @@ protected function createSingleDayAllDayEventLink(bool $immutable = false): Link
 
         return Link::createAllDay(
             'Birthday',
-            $dateTimeClass::createFromFormat('Y-m-d', '2018-02-01', new DateTimeZone('UTC'))
+            $dateTimeClass::createFromFormat('Y-m-d', '2018-02-01', new DateTimeZone('UTC'))->setTime(0, 0)
         )->description($description)->address('Party Lane 1A, 1337 Funtown');
     }
 
@@ -63,7 +63,7 @@ protected function createMultipleDaysAllDayEventLink(bool $immutable = false): L
 
         return Link::createAllDay(
             'Birthday',
-            $dateTimeClass::createFromFormat('Y-m-d', '2018-02-01', new DateTimeZone('UTC')),
+            $dateTimeClass::createFromFormat('Y-m-d', '2018-02-01', new DateTimeZone('UTC'))->setTime(0, 0),
             5
         )->description($description)->address('Party Lane 1A, 1337 Funtown');
     }
@@ -95,6 +95,21 @@ protected function createEventMultipleDaysViaStartEndWithTimezoneLink(bool $immu
         )->description($description);
     }
 
+    protected function createEventMultipleDaysViaStartEndWithDiffTimezoneLink(bool $immutable = false): Link
+    {
+        $description = 'Testing all day';
+
+        $dateTimeClass = $immutable ? DateTimeImmutable::class : DateTime::class;
+
+        // This should result in 7 days duration (2024-01-25 00:00 to 2024-01-31 00:00 Pacific/Wake).
+        return Link::create(
+            'All day bugs',
+            $dateTimeClass::createFromFormat('Y-m-d', '2024-01-25', new DateTimeZone('Pacific/Wake'))->setTime(0, 0),
+            $dateTimeClass::createFromFormat('Y-m-d', '2024-01-30', new DateTimeZone('Europe/Luxembourg'))->setTime(13, 00),
+            true,
+        )->description($description);
+    }
+
     protected function createDescriptionIsHTMLcodeEventLink(bool $immutable = false): Link
     {
         $description = 'With balloons, clowns and stuff