install german language

Dockerfile

@@ -3,6 +3,9 @@ ARG PLUGIN_VERSION=main
 
 FROM bitnami/moodle:${MOODLE_VERSION}
 
+# generate german language files
+RUN sed -i 's/^# de_DE.UTF-8 UTF-8$/de_DE.UTF-8 UTF-8/' /etc/locale.gen && locale-gen
+
 RUN apt update && apt install curl unzip nano -y
 COPY opt/adler /opt/adler
 COPY plugin-releases.json /opt/adler/moodle/adler_setup

README.md

@@ -111,6 +111,11 @@ When building the Docker image for this project, you can customize the following
 These arguments allow you to control the versions of Moodle and the plugin that are used during the image build process. You can adjust these values according to your specific
 requirements and preferences.
 
+## Install additional languages
+1) Install the required system locale by modifying the Dockerfile
+2) Install the moodle language pack either via web interface or by modifying the setup.php script (add an additional 
+   `install_language_pack` call for the desired language)
+
 ## Troubleshooting
 
 **Moodle setup fails with "The configuration file config.php alreaady exists. ...":** \

opt/adler/moodle/adler_setup/lib.php

@@ -6,6 +6,8 @@
 
 use local_adler\plugin_interface;
 use core\event\user_created;
+use tool_langimport\controller as lang_controller;
+
 
 
 /** Get Infos (incl download urls) of release to update to. Will return false if nothing to update
@@ -179,3 +181,36 @@ function create_default_course_category_for_user($username) {
     // use local_adler cli script
     plugin_interface::create_category_user_can_create_courses_in($username, 'adler_manager');
 }
+
+
+/**
+ * @param $language_code string language code. List of valid codes can be found at Site administration -> Language -> Language packs
+ * @return bool
+ */
+function is_language_pack_installed(string $language_code): bool {
+    $installed_langs = get_string_manager()->get_list_of_translations();
+    return str_contains($installed_langs, "($language_code)");
+}
+
+/**
+ * @param $language_code string language code. List of valid codes can be found at Site administration -> Language -> Language packs
+ * @return void
+ */
+function install_language_pack(string $language_code): void {
+    if (is_language_pack_installed($language_code)) {
+        cli_writeln("Language pack already installed");
+        return;
+    }
+
+    $lang_controller = new lang_controller();
+    try {
+        $result = $lang_controller->install_languagepacks($language_code);
+        if ($result == 1) {
+            cli_writeln("Language \"" . $language_code . "\" was installed");
+        } else {
+            cli_error("Language \"" . $language_code . "\" was not installed. The reason is unknown due to moodle limitations.");
+        }
+    } catch (Exception $e) {
+        cli_error("Failed to install language pack \"$language_code\". Reason: " . $e->getMessage());
+    }
+}

opt/adler/moodle/adler_setup/setup.php

@@ -139,4 +139,7 @@ function do_adler_roles_exist() {
         cli_writeln("creating user(s)");
         create_users($options);
     }
+
+    // activate german language pack
+    install_language_pack('de');
 }