Initial commit

kirby/src/Cms/LanguageRules.php

@@ -0,0 +1,98 @@
+<?php
+
+namespace Kirby\Cms;
+
+use Kirby\Exception\DuplicateException;
+use Kirby\Exception\InvalidArgumentException;
+use Kirby\Toolkit\Str;
+
+/**
+ * Validators for all language actions
+ *
+ * @package   Kirby Cms
+ * @author    Bastian Allgeier <bastian@getkirby.com>
+ * @link      https://getkirby.com
+ * @copyright Bastian Allgeier
+ * @license   https://getkirby.com/license
+ */
+class LanguageRules
+{
+    /**
+     * Validates if the language can be created
+     *
+     * @param \Kirby\Cms\Language $language
+     * @return bool
+     * @throws \Kirby\Exception\DuplicateException If the language already exists
+     */
+    public static function create(Language $language): bool
+    {
+        static::validLanguageCode($language);
+        static::validLanguageName($language);
+
+        if ($language->exists() === true) {
+            throw new DuplicateException([
+                'key'  => 'language.duplicate',
+                'data' => [
+                    'code' => $language->code()
+                ]
+            ]);
+        }
+
+        return true;
+    }
+
+    /**
+     * Validates if the language can be updated
+     *
+     * @param \Kirby\Cms\Language $language
+     */
+    public static function update(Language $language)
+    {
+        static::validLanguageCode($language);
+        static::validLanguageName($language);
+    }
+
+    /**
+     * Validates if the language code is formatted correctly
+     *
+     * @param \Kirby\Cms\Language $language
+     * @return bool
+     * @throws \Kirby\Exception\InvalidArgumentException If the language code is not valid
+     */
+    public static function validLanguageCode(Language $language): bool
+    {
+        if (Str::length($language->code()) < 2) {
+            throw new InvalidArgumentException([
+                'key'  => 'language.code',
+                'data' => [
+                    'code' => $language->code(),
+                    'name' => $language->name()
+                ]
+            ]);
+        }
+
+        return true;
+    }
+
+    /**
+     * Validates if the language name is formatted correctly
+     *
+     * @param \Kirby\Cms\Language $language
+     * @return bool
+     * @throws \Kirby\Exception\InvalidArgumentException If the language name is invalid
+     */
+    public static function validLanguageName(Language $language): bool
+    {
+        if (Str::length($language->name()) < 1) {
+            throw new InvalidArgumentException([
+                'key'  => 'language.name',
+                'data' => [
+                    'code' => $language->code(),
+                    'name' => $language->name()
+                ]
+            ]);
+        }
+
+        return true;
+    }
+}