feat(core): add i18n support into the core

composer.json

@@ -24,8 +24,6 @@
         "ext-mbstring": "*",
         "ext-fileinfo": "*",
 
-        "flextype-components/i18n" : "1.3.0",
-
         "glowy/session": "^3.0.0",
         "glowy/filesystem": "^3.0.0",
         "glowy/arrays": "^4.0.0",

src/flextype/core/I18n.php

@@ -0,0 +1,79 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * Flextype (https://awilum.github.io/flextype)
+ * Founded by Sergey Romanenko and maintained by Flextype Community.
+ */
+
+namespace Flextype;
+
+class I18n
+{
+    /**
+     * Dictionary
+     *
+     * @var array
+     */
+    public static $dictionary = [];
+
+    /**
+     * Default locale
+     *
+     * @var string
+     */
+    public static $locale = 'en_US';
+
+    /**
+     * Add translation keys
+     *
+     * New translation keus for default locale
+     * I18n::add(['auth_login' => 'Login', 'auth_password' => 'Password']);
+     *
+     * New translation keys for `en_US` locale
+     * I18n::add(['auth_login' => 'Login', 'auth_password' => 'Password'], 'en_US');
+     *
+     * @param  string $translates Translation keys and values to add
+     * @param  string $locale     Locale
+     * @return void
+     */
+    public static function add(array $translates, string $locale = null) : void
+    {
+        $locale = ($locale === null) ? I18n::$locale : $locale;
+
+        if (isset(I18n::$dictionary[$locale])) {
+            I18n::$dictionary[$locale] += $translates;
+        } else {
+            I18n::$dictionary[$locale] = $translates;
+        }
+    }
+
+    /**
+     * Returns translation of a string. If no translation exists, the original
+     * string will be returned. No parameters are replaced.
+     *
+     * Get translated string for `auth_login` for default locale
+     * $translated_string = I18n::find('auth_login');
+     *
+     * @param  string $translate Translate to find
+     * @param  array  $values    Values to replace in the translated text
+     * @param  string $locale    Locale
+     * @return string
+     */
+    public static function find(string $translate, array $values = [], string $locale = null) : string
+    {
+        $locale = ($locale === null) ? I18n::$locale : $locale;
+
+        // Search current string to translate in the Dictionary
+        if (isset(I18n::$dictionary[$locale][$translate])) {
+            $translate = I18n::$dictionary[$locale][$translate];
+            $translate = empty($values) ? $translate : strtr($translate, $values);
+        } else {
+            $translate = $translate;
+        }
+
+        // Return translation of a string
+        return $translate;
+    }
+}

src/flextype/helpers/helpers.php

@@ -2,6 +2,7 @@
 
 declare(strict_types=1);
 
+require_once __DIR__ . '/i18n.php';
 require_once __DIR__ . '/services.php';
 require_once __DIR__ . '/arrays.php';
 require_once __DIR__ . '/finder.php';

src/flextype/helpers/i18n.php

@@ -0,0 +1,32 @@
+<?php 
+
+declare(strict_types=1);
+
+use Flextype\I18n;
+
+if ( ! function_exists('__')) {
+    /**
+     * Global Translation/Internationalization function.
+     * Accepts an translation key and returns its translation for selected language.
+     * If the given translation key is not available in the current dictionary the
+     * translation key will be returned.
+     *
+     * Dislay a translated message for default locale
+     * echo __('auth_login');
+     *
+     * // Display a translated message
+     * echo __('auth_login', [], 'en_US');
+     *
+     * // With parameter replacement
+     * echo __('auth_welcome_message', [':username' => $username], 'en_US');
+     *
+     * @param  string $translate Translate to find
+     * @param  array  $values    Values to replace in the translated text
+     * @param  string $locale    Locale
+     * @return string
+     */
+    function __(string $translate, array $values = [], string $locale = null) : string
+    {
+        return I18n::find($translate, $values, $locale);
+    }
+}