3 files changed, 200 insertions, 0 deletions
diff --git a/htdocs/includes/config.php b/htdocs/includes/config.php
new file mode 100644
index 0000000..cf7dba6
--- /dev/null
+++ b/htdocs/includes/config.php
@@ -0,0 +1,19 @@
+<?php
+/**
+ * Config of demo.armandphilippot.com
+ *
+ * @package   DemoArmandphilippotCom
+ * @author    Armand Philippot <contact@armandphilippot.com>
+ * @copyright 2021 Armand Philippot
+ * @license   http://www.opensource.org/licenses/mit-license.php MIT
+ * @link      https://demo.armandphilippot.com/
+ * @since     1.0.0
+ */
+
+/**
+ * The website will check if the HTTP accepted locales have a matching
+ * translation. If not, the default locale is "en_US". If you want to
+ * overwrite the default locale, use this variable. Make sure the translation
+ * exists.
+ */
+$dap_default_locale = 'en_US';
diff --git a/htdocs/includes/i18n.php b/htdocs/includes/i18n.php
new file mode 100644
index 0000000..37dee90
--- /dev/null
+++ b/htdocs/includes/i18n.php
@@ -0,0 +1,150 @@
+<?php
+/**
+ * Functions to translate demo.armandphilippot.com
+ *
+ * @package   DemoArmandphilippotCom
+ * @author    Armand Philippot <contact@armandphilippot.com>
+ * @copyright 2021 Armand Philippot
+ * @license   http://www.opensource.org/licenses/mit-license.php MIT
+ * @link      https://demo.armandphilippot.com/
+ * @since     1.0.0
+ */
+
+/**
+ * Get a list of available translations.
+ *
+ * @return array The available languages.
+ */
+function dap_get_available_languages()
+{
+    $languages_dir = glob('languages' . DIRECTORY_SEPARATOR . '*', GLOB_ONLYDIR);
+    $languages     = str_replace('languages' . DIRECTORY_SEPARATOR, '', $languages_dir);
+
+    return $languages;
+}
+
+/**
+ * Get accepted languages based on HTTP header.
+ *
+ * @return array The accepted languages.
+ */
+function dap_get_languages_from_http()
+{
+    $languages = '';
+
+    if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
+        $languages = preg_split('/(,|;)/', $_SERVER['HTTP_ACCEPT_LANGUAGE'], -1, PREG_SPLIT_NO_EMPTY);
+        $languages = array_filter(
+            $languages,
+            function ($value) {
+                return substr($value, 0, 2) !== 'q=';
+            }
+        );
+    }
+
+    return $languages;
+}
+
+/**
+ * Check if a locale is a valid locale.
+ *
+ * @param string $locale The locale to test.
+ * @param array  $valid_locales The valid locales.
+ * @return boolean True if the locale exists.
+ */
+function dap_is_valid_locale(string $locale, array $valid_locales) : bool
+{
+    if (empty($locale)) {
+        return false;
+    }
+
+    return in_array($locale, $valid_locales, true);
+}
+
+/**
+ * Filter the accepted locales to determine the locale to use.
+ *
+ * @param array  $locales The locales to test.
+ * @param string $default_locale The default locale.
+ * @return string The first valid locale.
+ */
+function dap_get_valid_locale(array $locales, string $default_locale) : string
+{
+    $valid_locales = dap_get_available_languages();
+
+    if (isset($default_locale) && dap_is_valid_locale($default_locale, $valid_locales)) {
+        $default_locale = $default_locale;
+    } else {
+        $default_locale = 'en_US';
+    }
+
+    $possible_locales = array_intersect($locales, $valid_locales);
+    $possible_locales = array_values($possible_locales);
+    $locale           = '';
+
+    if (count($possible_locales) > 0) {
+        $locale = $possible_locales[0];
+    } else {
+        $locale = $default_locale;
+    }
+
+    return $locale;
+}
+
+/**
+ * Define the locale to use.
+ *
+ * @param string $default_locale The default locale.
+ * @return string The locale to use.
+ */
+function dap_define_locale(string $default_locale)
+{
+    $http_language = dap_get_languages_from_http();
+    $http_locale   = str_replace('-', '_', $http_language);
+    $http_locale = is_array($http_locale) ? $http_locale : array($http_locale);
+    $locale        = dap_get_valid_locale($http_locale, $default_locale);
+
+    return $locale;
+}
+
+/**
+ * Get a list of possible format based on the locale to use.
+ *
+ * @param string $locale The locale to use.
+ * @return array The locale in different formats to use.
+ */
+function dap_get_formatted_locale(string $locale)
+{
+    $formatted_locale   = array( $locale );
+    $formatted_locale[] = $locale . '.utf8';
+    $formatted_locale[] = $locale . '.UTF-8';
+    $formatted_locale[] = strtok($locale, '_');
+
+    return $formatted_locale;
+}
+
+/**
+ * Transform a locale format (ex: `en_US`) to a language format (ex: `en-US`).
+ *
+ * @param string $locale The used locale.
+ * @return string The language to use.
+ */
+function dap_get_language(string $locale)
+{
+    $language = str_replace('_', '-', $locale);
+
+    return $language;
+}
+
+/**
+ * Set the locale.
+ *
+ * @param array $formatted_locale The locale with its different formats.
+ */
+function dap_set_locale(array $formatted_locale)
+{
+    setlocale(LC_ALL, $formatted_locale);
+    bindtextdomain('DAP', dirname(__DIR__) . DIRECTORY_SEPARATOR . 'languages');
+    bind_textdomain_codeset('DAP', 'UTF-8');
+    textdomain('DAP');
+}
diff --git a/htdocs/includes/utils.php b/htdocs/includes/utils.php
new file mode 100644
index 0000000..8b661d7
--- /dev/null
+++ b/htdocs/includes/utils.php
@@ -0,0 +1,31 @@
+<?php
+/**
+ * Utilities for demo.armandphilippot.com
+ *
+ * @package   DemoArmandphilippotCom
+ * @author    Armand Philippot <contact@armandphilippot.com>
+ * @copyright 2021 Armand Philippot
+ * @license   http://www.opensource.org/licenses/mit-license.php MIT
+ * @link      https://demo.armandphilippot.com/
+ * @since     1.0.0
+ */
+
+/**
+ * Get current environment defined in .env file.
+ *
+ * @since 1.0.0
+ *
+ * @return string Current env or empty string.
+ */
+function dap_get_current_env()
+{
+    if (file_exists(__DIR__ . '/vendor/autoload.php')) {
+        require_once __DIR__ . '/vendor/autoload.php';
+        $dap_dotenv = Dotenv\Dotenv::createImmutable(__DIR__);
+        $dap_dotenv->safeLoad();
+        $dap_current_env = $_ENV['WP_THEME_ENV'];
+        return $dap_current_env;
+    } else {
+        return '';
+    }
+}