From 43d77e4803f66d49c10dbd6ac374f63a2dec9c3d Mon Sep 17 00:00:00 2001
From: Shadi Naif <shadinaif@gmail.com>
Date: Thu, 22 Feb 2024 11:08:02 +0300
Subject: [PATCH] feat: add i18n_js_namespace to support atlas - FC-0012

---
 recommender/recommender.py | 31 ++++++++++++++++++++++++++++---
 recommender/utils.py       | 23 +++++++++++++++++++++++
 translation_settings.py    |  4 ++--
 3 files changed, 53 insertions(+), 5 deletions(-)
 create mode 100644 recommender/utils.py

diff --git a/recommender/recommender.py b/recommender/recommender.py
index f4ce74c..b9eefce 100644
--- a/recommender/recommender.py
+++ b/recommender/recommender.py
@@ -27,6 +27,8 @@
 from xblock.reference.plugins import Filesystem
 from xblockutils.resources import ResourceLoader
 
+from recommender.utils import DummyTranslationService
+
 # TODO: Should be updated once XBlocks and tracking logs have finalized APIs
 # and documentation.
 try:
@@ -278,6 +280,8 @@ class RecommenderXBlock(HelperXBlock):
         'url', 'title', 'description', 'descriptionText'
     ]
 
+    i18n_js_namespace = 'RecommenderXBlockI18N'
+
     def _get_onetime_url(self, filename):
         """
         Return one time url for uploaded screenshot
@@ -949,9 +953,10 @@ def _construct_view_resource(self, resource):
         return result
 
     @staticmethod
-    def _get_statici18n_js_url():  # pragma: no cover
+    def _get_deprecated_i18n_js_url():  # pragma: no cover
         """
-        Returns the Javascript translation file for the currently selected language, if any found by `pkg_resources`
+        Returns the deprecated Javascript translation file for the currently selected language, if any found by
+        `pkg_resources`
         """
         lang_code = translation.get_language()
         if not lang_code:
@@ -963,6 +968,26 @@ def _get_statici18n_js_url():  # pragma: no cover
                 return text_js.format(lang_code=code)
         return None
 
+    def _get_statici18n_js_url(self):
+        """Return the JavaScript translation file provided by the XBlockI18NService."""
+        if url_getter_func := getattr(self.i18n_service, 'get_javascript_i18n_catalog_url', None):
+            if javascript_url := url_getter_func(self):
+                return javascript_url
+
+        if deprecated_url := self._get_deprecated_i18n_js_url():
+            return self.resource_string(deprecated_url)
+
+        return None
+
+    @property
+    def i18n_service(self):
+        """ Obtains translation service """
+        i18n_service = self.runtime.service(self, "i18n")
+        if i18n_service:
+            return i18n_service
+        else:
+            return DummyTranslationService()
+
     def student_view(self, _context=None):  # pylint: disable=unused-argument
         """
         The primary view of the RecommenderXBlock, shown to students
@@ -1011,7 +1036,7 @@ def student_view(self, _context=None):  # pylint: disable=unused-argument
         frag.add_javascript(self.resource_string("static/js/src/jquery.tooltipster.min.js"))
         statici18n_js_url = self._get_statici18n_js_url()
         if statici18n_js_url:
-            frag.add_javascript(self.resource_string(statici18n_js_url))
+            frag.add_javascript(statici18n_js_url)
         frag.add_javascript(self.resource_string("static/js/src/cats.js"))
         frag.add_javascript(self.resource_string("static/js/src/recommender.js"))
         frag.initialize_js('RecommenderXBlock', self.get_client_configuration())
diff --git a/recommender/utils.py b/recommender/utils.py
new file mode 100644
index 0000000..9c14bb2
--- /dev/null
+++ b/recommender/utils.py
@@ -0,0 +1,23 @@
+"""Utils for the Recommender XBlock"""
+
+def _(text):
+    """
+    Make '_' a no-op so we can scrape strings
+    """
+    return text
+
+
+def ngettext_fallback(text_singular, text_plural, number):
+    """ Dummy `ngettext` replacement to make string extraction tools scrape strings marked for translation """
+    if number == 1:
+        return text_singular
+    else:
+        return text_plural
+
+
+class DummyTranslationService:
+    """
+    Dummy drop-in replacement for i18n XBlock service
+    """
+    gettext = _
+    ngettext = ngettext_fallback
diff --git a/translation_settings.py b/translation_settings.py
index acc9d54..1a37f71 100644
--- a/translation_settings.py
+++ b/translation_settings.py
@@ -11,7 +11,7 @@
 # Build paths inside the project like this: os.path.join(BASE_DIR, ...)
 from __future__ import absolute_import
 import os
-BASE_DIR = os.path.dirname(os.path.dirname(__file__))
+BASE_DIR = os.path.dirname(__file__)
 
 
 # Quick-start development settings - unsuitable for production
@@ -81,7 +81,7 @@
     ('zh_CN', 'Chinese (China)'),
 ]
 
-LOCALE_PATHS = [os.path.join(BASE_DIR, "locale")]
+LOCALE_PATHS = [os.path.join(BASE_DIR, "recommender", "conf", "locale")]
 
 STATICI18N_DOMAIN = 'text'
 STATICI18N_NAMESPACE = 'RecommenderXBlockI18N'