Added converter methods

Author: toonvandenbos

src/Timezone.php

@@ -3,6 +3,7 @@
 namespace Whitecube\LaravelTimezones;
 
 use Carbon\CarbonTimeZone;
+use Carbon\CarbonInterface;
 
 class Timezone
 {
@@ -65,6 +66,16 @@ public function getStorage(): CarbonTimeZone
         return $this->storage;
     }
 
+    public function convertToCurrent(CarbonInterface $date): CarbonInterface
+    {
+        return $date->copy()->setTimezone($this->getCurrent());
+    }
+
+    public function convertToStorage(CarbonInterface $date): CarbonInterface
+    {
+        return $date->copy()->setTimezone($this->getStorage());
+    }
+
     protected function makeTimezone($value): CarbonTimeZone
     {
         if(! is_a($value, CarbonTimeZone::class)) {

tests/TimezoneSingletonTest.php

@@ -1,5 +1,6 @@
 <?php
 
+use Carbon\Carbon;
 use Carbon\CarbonTimeZone;
 use Whitecube\LaravelTimezones\Timezone;
 
@@ -9,3 +10,25 @@
     expect($instance->getCurrent())->toBeInstanceOf(CarbonTimeZone::class);
     expect($instance->getStorage())->toBeInstanceOf(CarbonTimeZone::class);
 });
+
+it('can convert date with defined timezone to current & storage timezones', function() {
+    $instance = new Timezone('UTC');
+    $instance->setCurrent('Europe/Brussels');
+
+    $date = new Carbon(null, 'Asia/Phnom_Penh');
+
+    expect($instance->convertToStorage($date)->getTimezone()->getName() ?? null)->toBe('UTC');
+    expect($instance->convertToCurrent($date)->getTimezone()->getName() ?? null)->toBe('Europe/Brussels');
+    expect($date->getTimezone()->getName() ?? null)->toBe('Asia/Phnom_Penh');
+});
+
+it('can convert date with unset timezone to current & storage timezones', function() {
+    $instance = new Timezone('UTC');
+    $instance->setCurrent('Europe/Brussels');
+
+    $date = new Carbon();
+
+    expect($instance->convertToStorage($date)->getTimezone()->getName() ?? null)->toBe('UTC');
+    expect($instance->convertToCurrent($date)->getTimezone()->getName() ?? null)->toBe('Europe/Brussels');
+    expect($date->getTimezone()->getName() ?? null)->toBe(date_default_timezone_get());
+});