From e459b750de4e81af8fe770aaef12c7a9860cbb1d Mon Sep 17 00:00:00 2001
From: David Grudl <david@grudl.com>
Date: Mon, 20 Nov 2023 02:37:13 +0100
Subject: [PATCH] added filters |localDate & |localTime WIP

---
 src/Latte/Essential/CoreExtension.php |  2 ++
 src/Latte/Essential/Filters.php       | 35 +++++++++++++++++++++------
 2 files changed, 30 insertions(+), 7 deletions(-)

diff --git a/src/Latte/Essential/CoreExtension.php b/src/Latte/Essential/CoreExtension.php
index 63346bbe2..58f0aa908 100644
--- a/src/Latte/Essential/CoreExtension.php
+++ b/src/Latte/Essential/CoreExtension.php
@@ -141,6 +141,8 @@ public function getFilters(): array
 			'join' => [Filters::class, 'implode'],
 			'last' => [Filters::class, 'last'],
 			'length' => [Filters::class, 'length'],
+			'localDate' => fn($date, string $format = 'medium') => Filters::localDateTime($date, $format, date: true),
+			'localTime' => fn($time, string $format = 'medium') => Filters::localDateTime($time, $format, date: false),
 			'lower' => extension_loaded('mbstring')
 				? [Filters::class, 'lower']
 				: function () { throw new RuntimeException('Filter |lower requires mbstring extension.'); },
diff --git a/src/Latte/Essential/Filters.php b/src/Latte/Essential/Filters.php
index 9c07ecca0..17b4654a9 100644
--- a/src/Latte/Essential/Filters.php
+++ b/src/Latte/Essential/Filters.php
@@ -172,17 +172,12 @@ public static function date(string|int|\DateTimeInterface|\DateInterval|null $ti
 			return null;
 		}
 
-		if (!isset($format)) {
-			$format = Latte\Runtime\Filters::$dateFormat;
-		}
-
+		$format ??= Latte\Runtime\Filters::$dateFormat;
 		if ($time instanceof \DateInterval) {
 			return $time->format($format);
 
 		} elseif (is_numeric($time)) {
-			$time = new \DateTime('@' . $time);
-			$time->setTimeZone(new \DateTimeZone(date_default_timezone_get()));
-
+			$time = (new \DateTime)->setTimestamp((int) $time);
 		} elseif (!$time instanceof \DateTimeInterface) {
 			$time = new \DateTime($time);
 		}
@@ -199,6 +194,32 @@ public static function date(string|int|\DateTimeInterface|\DateInterval|null $ti
 	}
 
 
+	/**
+	 * Local date/time formatting.
+	 */
+	public static function localDateTime(string|int|\DateTimeInterface|null $time, string $format, bool $date): ?string
+	{
+		if (!class_exists(\IntlDateFormatter::class)) {
+			throw new Latte\RuntimeException("Filters |localDate and |localTime requires 'intl' extension.");
+		} elseif ($time == null) { // intentionally ==
+			return null;
+		} elseif (is_numeric($time)) {
+			$time = (new \DateTime)->setTimestamp((int) $time);
+		} elseif (is_string($time)) {
+			$time = new \DateTime($time);
+		}
+
+		$format = match ($format) {
+			'short' => \IntlDateFormatter::SHORT,
+			'medium' => \IntlDateFormatter::MEDIUM,
+			'long' => \IntlDateFormatter::LONG,
+			'full' => \IntlDateFormatter::FULL,
+			default => throw new Latte\RuntimeException("Unknown format '$format' used in |localDate or |localTime."),
+		};
+		return \IntlDateFormatter::formatObject($time, $date ? [$format, \IntlDateFormatter::NONE] : [\IntlDateFormatter::NONE, $format]);
+	}
+
+
 	/**
 	 * Converts to human readable file size.
 	 */