feat: added locale rule

Author: andrepimpao

composer.json

@@ -2,7 +2,7 @@
     "name": "programmatordev/yet-another-php-validator",
     "description": "PHP validator with expressive error messages",
     "type": "library",
-    "keywords": ["PHP", "PHP8", "Validator", "Validation"],
+    "keywords": ["php", "php8", "validator", "validation"],
     "license": "MIT",
     "authors": [
         {
@@ -14,13 +14,14 @@
     "require": {
         "php": ">=8.1",
         "egulias/email-validator": "^4.0",
-        "symfony/intl": "^6.3",
+        "symfony/intl": "^6.4",
         "symfony/polyfill-ctype": "^1.27",
-        "symfony/polyfill-intl-grapheme": "^1.29"
+        "symfony/polyfill-intl-grapheme": "^1.29",
+        "symfony/polyfill-intl-icu": "^1.29"
     },
     "require-dev": {
         "phpunit/phpunit": "^10.0",
-        "symfony/var-dumper": "^6.3"
+        "symfony/var-dumper": "^6.4"
     },
     "autoload": {
         "psr-4": {

src/ChainedValidatorInterface.php

@@ -97,6 +97,11 @@ public function lessThanOrEqual(
         ?string $message = null
     ): ChainedValidatorInterface&Validator;
 
+    public function locale(
+        bool $canonicalize = false,
+        ?string $message = null
+    ): ChainedValidatorInterface&Validator;
+
     public function notBlank(
         ?callable $normalizer = null,
         ?string $message = null

src/Exception/LocaleException.php

@@ -0,0 +1,5 @@
+<?php
+
+namespace ProgrammatorDev\Validator\Exception;
+
+class LocaleException extends ValidationException {}

src/Rule/Locale.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace ProgrammatorDev\Validator\Rule;
+
+use ProgrammatorDev\Validator\Exception\LocaleException;
+use ProgrammatorDev\Validator\Exception\UnexpectedTypeException;
+use Symfony\Component\Intl\Locales;
+
+class Locale extends AbstractRule implements RuleInterface
+{
+    private string $message = 'The {{ name }} value is not a valid locale, {{ value }} given.';
+
+    public function __construct(
+        private readonly bool $canonicalize = false,
+        ?string $message = null
+    )
+    {
+        $this->message = $message ?? $this->message;
+    }
+
+    public function assert(mixed $value, ?string $name = null): void
+    {
+        if (!\is_string($value)) {
+            throw new UnexpectedTypeException('string', get_debug_type($value));
+        }
+
+        // keep original value for parameters
+        $input = $value;
+
+        if ($this->canonicalize) {
+            $input = \Locale::canonicalize($input);
+        }
+
+        if (!Locales::exists($input)) {
+            throw new LocaleException(
+                message: $this->message,
+                parameters: [
+                    'name' => $name,
+                    'value' => $value
+                ]
+            );
+        }
+    }
+}

src/StaticValidatorInterface.php

@@ -96,6 +96,11 @@ public static function lessThanOrEqual(
         ?string $message = null
     ): ChainedValidatorInterface&Validator;
 
+    public static function locale(
+        bool $canonicalize = false,
+        ?string $message = null
+    ): ChainedValidatorInterface&Validator;
+
     public static function notBlank(
         ?callable $normalizer = null,
         ?string $message = null

tests/LocaleTest.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace ProgrammatorDev\Validator\Test;
+
+use ProgrammatorDev\Validator\Exception\LocaleException;
+use ProgrammatorDev\Validator\Rule\Locale;
+use ProgrammatorDev\Validator\Test\Util\TestRuleFailureConditionTrait;
+use ProgrammatorDev\Validator\Test\Util\TestRuleMessageOptionTrait;
+use ProgrammatorDev\Validator\Test\Util\TestRuleSuccessConditionTrait;
+use ProgrammatorDev\Validator\Test\Util\TestRuleUnexpectedValueTrait;
+
+class LocaleTest extends AbstractTest
+{
+    use TestRuleUnexpectedValueTrait;
+    use TestRuleFailureConditionTrait;
+    use TestRuleSuccessConditionTrait;
+    use TestRuleMessageOptionTrait;
+
+    public static function provideRuleUnexpectedValueData(): \Generator
+    {
+        $unexpectedTypeMessage = '/Expected value of type "string", (.*) given\./';
+
+        yield 'invalid type' => [new Locale(), 123, $unexpectedTypeMessage];
+    }
+
+    public static function provideRuleFailureConditionData(): \Generator
+    {
+        $exception = LocaleException::class;
+        $message = '/The (.*) value is not a valid locale, (.*) given\./';
+
+        yield 'invalid' => [new Locale(), 'invalid', $exception, $message];
+        yield 'uncanonicalized 1' => [new Locale(), 'pt_pt', $exception, $message];
+        yield 'uncanonicalized 2' => [new Locale(), 'pt-PT', $exception, $message];
+        yield 'uncanonicalized 3' => [new Locale(), 'PT-pt.utf8', $exception, $message];
+    }
+
+    public static function provideRuleSuccessConditionData(): \Generator
+    {
+        yield 'language code' => [new Locale(), 'pt'];
+        yield 'language and country code' => [new Locale(), 'pt_PT'];
+        yield 'canonicalized 1' => [new Locale(canonicalize: true), 'pt_pt'];
+        yield 'canonicalized 2' => [new Locale(canonicalize: true), 'pt-PT'];
+        yield 'canonicalized 3' => [new Locale(canonicalize: true), 'PT-pt.utf8'];
+    }
+
+    public static function provideRuleMessageOptionData(): \Generator
+    {
+        yield 'message' => [
+            new Locale(
+                message: '{{ name }} {{ value }}'
+            ),
+            'invalid',
+            'test "invalid"'
+        ];
+    }
+}