From d6b97e363894c86fc9001478fb30b4852f713101 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

---
 composer.json                         |  1 +
 src/Latte/Essential/CoreExtension.php |  1 +
 src/Latte/Essential/Filters.php       | 38 ++++++++++++++++++++++-----
 tests/filters/localDate.phpt          | 38 +++++++++++++++++++++++++++
 4 files changed, 71 insertions(+), 7 deletions(-)
 create mode 100644 tests/filters/localDate.phpt

diff --git a/composer.json b/composer.json
index 44d1bb1cf..f42eab550 100644
--- a/composer.json
+++ b/composer.json
@@ -30,6 +30,7 @@
 		"ext-iconv": "to use filters |reverse, |substring",
 		"ext-mbstring": "to use filters like lower, upper, capitalize, ...",
 		"ext-fileinfo": "to use filter |datastream",
+		"ext-intl": "to use filters |localDate, |localTime",
 		"nette/utils": "to use filter |webalize",
 		"nette/php-generator": "to use tag {templatePrint}"
 	},
diff --git a/src/Latte/Essential/CoreExtension.php b/src/Latte/Essential/CoreExtension.php
index 63346bbe2..7982a1f21 100644
--- a/src/Latte/Essential/CoreExtension.php
+++ b/src/Latte/Essential/CoreExtension.php
@@ -141,6 +141,7 @@ public function getFilters(): array
 			'join' => [Filters::class, 'implode'],
 			'last' => [Filters::class, 'last'],
 			'length' => [Filters::class, 'length'],
+			'localDate' => [Filters::class, 'localDate'],
 			'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..603681e0c 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 +194,35 @@ public static function date(string|int|\DateTimeInterface|\DateInterval|null $ti
 	}
 
 
+	/**
+	 * Local date/time formatting.
+	 * https://unicode-org.github.io/icu/userguide/format_parse/datetime/#datetime-format-syntax
+	 */
+	public static function localDate(string|int|\DateTimeInterface|null $time, string $format = 'medium'): ?string
+	{
+		if (!class_exists(\IntlDateFormatter::class)) {
+			throw new Latte\RuntimeException("Filters |localDate and |localTime requires 'intl' extension.");
+		} elseif ($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) {
+			'time' => [\IntlDateFormatter::NONE, \IntlDateFormatter::SHORT],
+			'timeSec' => [\IntlDateFormatter::NONE, \IntlDateFormatter::MEDIUM],
+			'short' => [\IntlDateFormatter::SHORT, \IntlDateFormatter::NONE],
+			'medium' => [\IntlDateFormatter::MEDIUM, \IntlDateFormatter::NONE],
+			'long' => [\IntlDateFormatter::LONG, \IntlDateFormatter::NONE],
+			'full' => [\IntlDateFormatter::FULL, \IntlDateFormatter::NONE],
+			default => $format,
+		};
+		return preg_replace('~(\d\.) ~', "\$1\u{a0}", \IntlDateFormatter::formatObject($time, $format));
+	}
+
+
 	/**
 	 * Converts to human readable file size.
 	 */
diff --git a/tests/filters/localDate.phpt b/tests/filters/localDate.phpt
new file mode 100644
index 000000000..b75959153
--- /dev/null
+++ b/tests/filters/localDate.phpt
@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * Test: Latte\Essential\Filters::localDate()
+ */
+
+declare(strict_types=1);
+
+use Latte\Essential\Filters;
+use Tester\Assert;
+
+require __DIR__ . '/../bootstrap.php';
+
+
+ini_set('intl.default_locale', 'cs_CZ');
+
+// types of value
+Assert::null(Filters::localDate(null));
+Assert::same("23.\u{a0}1.\u{a0}1978", Filters::localDate(254_400_000));
+Assert::same("5.\u{a0}5.\u{a0}1978", Filters::localDate('1978-05-05'));
+Assert::same("5.\u{a0}5.\u{a0}1978", Filters::localDate(new DateTime('1978-05-05')));
+
+// predefined date format
+Assert::same('05.05.78', Filters::localDate(new DateTime('1978-05-05'), 'short'));
+Assert::same("5.\u{a0}5.\u{a0}1978", Filters::localDate(new DateTime('1978-05-05'), 'medium'));
+Assert::same("5.\u{a0}května 1978", Filters::localDate(new DateTime('1978-05-05'), 'long'));
+Assert::same("pátek 5.\u{a0}května 1978", Filters::localDate(new DateTime('1978-05-05'), 'full'));
+
+// predefined time format
+Assert::same('12:13', Filters::localDate(new DateTime('12:13:14'), 'time'));
+Assert::same('12:13:14', Filters::localDate(new DateTime('12:13:14'), 'timeSec'));
+
+// custom format
+Assert::same("po, led 23, '78", Filters::localDate(254_400_000, "EEE, MMM d, ''yy"));
+
+// timestamp & timezone
+date_default_timezone_set('America/Los_Angeles');
+Assert::same('7:09:31', Filters::localDate(1_408_284_571, 'timeSec'));