Add method to check if country is supported, add doccomments for bett…

…er IDE support

Signed-off-by: Tobias Oitzinger <tobiasoitzinger@gmail.com>

src/Facades/VatValidatorFacade.php

@@ -5,6 +5,13 @@
 use Danielebarbaro\LaravelVatEuValidator\VatValidator;
 use Illuminate\Support\Facades\Facade;
 
+/**
+ * @method bool validateFormat(string $vatNumber)
+ * @method bool validateExistence(string $vatNumber)
+ * @method bool validate(string $vatNumber)
+ * @method static int luhnCheck(string $vatNumber)
+ * @method static string countryIsSupported(string $country)
+ */
 class VatValidatorFacade extends Facade
 {
     /**

src/VatValidator.php

@@ -61,6 +61,15 @@ public function __construct(Client $client = null)
         }
     }
 
+    /**
+     * Return if a country is supported by this validator
+     * @param string $country
+     * @return bool
+     */
+    public static function countryIsSupported(string $country): bool {
+        return isset(self::$pattern_expression[$country]);
+    }
+
     /**
      * Validate a VAT number format.
      * @param string $vatNumber

tests/Rules/CountryIsSupportedTest.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace Danielebarbaro\LaravelVatEuValidator\Tests\Rules;
+
+use Danielebarbaro\LaravelVatEuValidator\VatValidator;
+use Orchestra\Testbench\TestCase;
+
+class CountryIsSupportedTest extends TestCase
+{
+    public function testCountryIsSupported()
+    {
+        self::assertTrue(VatValidator::countryIsSupported('AT'));
+    }
+
+    public function testCountryIsNotSupported()
+    {
+        self::assertFalse(VatValidator::countryIsSupported('US'));
+    }
+}