Add timezones support, fix create from format methods

src/DatetimeFactory.php

@@ -4,6 +4,7 @@
 
 namespace Mistrfilda\Datetime;
 
+use Mistrfilda\Datetime\Timezone\Timezone;
 use Mistrfilda\Datetime\Types\DatetimeImmutable;
 use Throwable;
 
@@ -17,14 +18,14 @@ class DatetimeFactory
 
 	public static function createFromFormat(
 		string $datetime,
-		string $mysqlDatetimeFormat = self::DEFAULT_MYSQL_DATETIME_FORMAT
+		string $format = self::DEFAULT_MYSQL_DATETIME_FORMAT
 	): DateTimeImmutable {
-		$parsedDatetime = DateTimeImmutable::createFromFormat($mysqlDatetimeFormat, $datetime);
+		$parsedDatetime = DateTimeImmutable::createFromFormat($format, $datetime);
 		if ($parsedDatetime === false) {
 			throw new DatetimeException('Can\'t create datetime from specified value and format');
 		}
 
-		return new DatetimeImmutable('@' . $parsedDatetime->getTimestamp());
+		return (new DatetimeImmutable('@' . $parsedDatetime->getTimestamp()))->setTimezone($parsedDatetime->getTimezone());
 	}
 
 	public function createNow(): DatetimeImmutable
@@ -37,10 +38,10 @@ public function createToday(): DateTimeImmutable
 		return (new DateTimeImmutable())->setTime(0, 0, 0);
 	}
 
-	public function createFromTimestamp(int $timestamp): DateTimeImmutable
+	public function createFromTimestamp(int $timestamp, string $timezone = Timezone::UTC): DateTimeImmutable
 	{
 		try {
-			return new DateTimeImmutable('@' . $timestamp);
+			return (new DateTimeImmutable('@' . $timestamp))->setTimezone(Timezone::createTimezone($timezone));
 		} catch (Throwable $e) {
 			throw new DatetimeException($e->getMessage(), $e->getCode(), $e);
 		}
@@ -55,6 +56,6 @@ public function createDatetimeFromMysqlFormat(
 			throw new DatetimeException('Can\'t create datetime from specified value and format');
 		}
 
-		return new DatetimeImmutable('@' . $parsedDatetime->getTimestamp());
+		return (new DatetimeImmutable('@' . $parsedDatetime->getTimestamp()))->setTimezone($parsedDatetime->getTimezone());
 	}
 }

src/Timezone/Timezone.php

@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Mistrfilda\Datetime\Timezone;
+
+use DateTimeZone;
+
+class Timezone
+{
+	public const UTC = 'UTC';
+
+	public const PRAGUE = 'Europe/Prague';
+
+	public static function createTimezone(string $zone): DateTimeZone
+	{
+		return new DateTimeZone($zone);
+	}
+
+	public static function getUTCTimezone(): DateTimeZone
+	{
+		return new DateTimeZone(self::UTC);
+	}
+
+	public static function getPragueTimezone(): DateTimeZone
+	{
+		return new DateTimeZone(self::PRAGUE);
+	}
+}

tests/Unit/Timezone/TimezoneTest.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Mistrfilda\Datetime\Tests\Unit\Timezone;
+
+use Mistrfilda\Datetime\Tests\Unit\BaseUnitTest;
+use Mistrfilda\Datetime\Timezone\Timezone;
+
+class TimezoneTest extends BaseUnitTest
+{
+	public function testTimezones(): void
+	{
+		self::assertSame(
+			'Europe/Prague',
+			Timezone::getPragueTimezone()->getName()
+		);
+
+		self::assertSame(
+			'UTC',
+			Timezone::getUTCTimezone()->getName()
+		);
+	}
+}

tests/UpdatedTestCase.php

@@ -63,5 +63,6 @@ protected static function assertDatetimeImmutable(
 		DateTimeImmutable $actual
 	): void {
 		self::assertSame($expected->getTimestamp(), $actual->getTimestamp());
+		self::assertSame($expected->getTimezone()->getName(), $actual->getTimezone()->getName());
 	}
 }