add: util method in edx-val for listing transcript_languages for a course

edxval/__init__.py

@@ -2,4 +2,4 @@
 init
 """
 
-__version__ = '2.9.0'
+__version__ = '2.9.1'

edxval/api.py

@@ -1,12 +1,11 @@
 """
 The internal API for VAL.
 """
-
-
 import logging
 from enum import Enum
 from uuid import uuid4
 
+from django.conf import settings
 from django.core.exceptions import ObjectDoesNotExist, ValidationError
 from django.core.files.base import ContentFile
 from django.core.paginator import Paginator
@@ -18,6 +17,7 @@
 from lxml.etree import Element, SubElement
 from pysrt.srtexc import Error
 
+import cachetools.func
 from edxval.config.waffle import OVERRIDE_EXISTING_IMPORTED_TRANSCRIPTS
 from edxval.exceptions import (
     InvalidTranscriptFormat,
@@ -733,6 +733,26 @@ def get_videos_for_course(course_id, sort_field=None, sort_dir=SortDirection.asc
     )
 
 
+@cachetools.func.ttl_cache(maxsize=None, ttl=settings.TRANSCRIPT_LANG_CACHE_TIMEOUT)
+def get_transcript_languages(course_id, provider_type):
+    """
+    Returns a list of languages for which transcripts are available for a course
+
+    Args:
+        course_id (str): course id
+        provider_type (str): transcript provider type
+
+    Returns:
+        (list): A list of language codes
+    """
+    course_video_ids = CourseVideo.objects.filter(course_id=course_id, is_hidden=False).values_list('video__id')
+    transcript_languages = (
+        VideoTranscript.objects.filter(video__id__in=course_video_ids, provider=provider_type)
+        .values_list("language_code", flat=True).distinct()
+    )
+    return list(transcript_languages)
+
+
 def get_course_videos_qset(course_id):
     """
     Get a QuerySet of CourseVideos for a given course.

edxval/settings/base.py

@@ -193,3 +193,5 @@
         }
     },
 ]
+
+TRANSCRIPT_LANG_CACHE_TIMEOUT = 60 * 60 * 24  # 24 hours

edxval/tests/test_api.py

@@ -3189,6 +3189,18 @@ def test_get_transcript_details_for_course_no_course_videos(self):
 
         self.assertEqual(len(course_transcript), 0)
 
+    @data(
+        (TranscriptProviderType.THREE_PLAY_MEDIA, ['en']),
+        (TranscriptProviderType.CIELO24, ['fr'])
+    )
+    @unpack
+    def test_get_transcript_languages_for_course(self, provider_type, expected_languages):
+        """
+        Verify that `get_transcript_languages` api function works as expected.
+        """
+        transcript_languages = api.get_transcript_languages(self.course_id1, provider_type)
+        self.assertEqual(transcript_languages, expected_languages)
+
 
 @ddt
 class TranscriptPreferencesTest(TestCase):

requirements/base.in

@@ -11,3 +11,4 @@ pillow                              # for reserved keywords linter
 edx-toggles>=2.0.0
 lxml
 pysrt
+cachetools

requirements/ci.txt

@@ -14,7 +14,7 @@ charset-normalizer==3.4.1
     # via requests
 colorama==0.4.6
     # via tox
-coverage[toml]==7.6.10
+coverage[toml]==7.6.12
     # via coveralls
 coveralls==4.0.1
     # via -r requirements/ci.in
@@ -48,5 +48,5 @@ urllib3==2.2.3
     # via
     #   -c requirements/common_constraints.txt
     #   requests
-virtualenv==20.29.1
+virtualenv==20.29.2
     # via tox

requirements/dev.txt

@@ -50,14 +50,14 @@ code-annotations==2.2.0
     #   edx-toggles
 colorama==0.4.6
     # via tox
-coverage[toml]==7.6.10
+coverage[toml]==7.6.12
     # via
     #   -r requirements/test.in
     #   coveralls
     #   pytest-cov
 coveralls==4.0.1
     # via -r requirements/ci.in
-cryptography==44.0.0
+cryptography==44.0.1
     # via
     #   pyjwt
     #   secretstorage
@@ -69,7 +69,7 @@ dill==0.3.9
     # via pylint
 distlib==0.3.9
     # via virtualenv
-django==4.2.18
+django==4.2.19
     # via
     #   -c requirements/common_constraints.txt
     #   -r requirements/base.in
@@ -165,7 +165,7 @@ jinja2==3.1.5
     #   diff-cover
 keyring==25.6.0
     # via twine
-lxml==5.3.0
+lxml==5.3.1
     # via -r requirements/base.in
 markdown-it-py==3.0.0
     # via rich
@@ -183,7 +183,7 @@ more-itertools==10.6.0
     #   jaraco-functools
 multidict==6.1.0
     # via yarl
-newrelic==10.5.0
+newrelic==10.6.0
     # via edx-django-utils
 nh3==0.2.20
     # via readme-renderer
@@ -195,7 +195,7 @@ packaging==24.2
     #   twine
 pact-python==2.3.1
     # via -r requirements/test.in
-pbr==6.1.0
+pbr==6.1.1
     # via stevedore
 pillow==11.1.0
     # via -r requirements/base.in
@@ -248,7 +248,7 @@ pylint-plugin-utils==0.8.2
     # via
     #   pylint-celery
     #   pylint-django
-pymongo==4.11
+pymongo==4.11.1
     # via edx-opaque-keys
 pynacl==1.5.0
     # via edx-django-utils
@@ -262,7 +262,7 @@ pytest==8.3.4
     #   pytest-django
 pytest-cov==6.0.0
     # via -r requirements/test.in
-pytest-django==4.9.0
+pytest-django==4.10.0
     # via -r requirements/test.in
 python-slugify==8.0.4
     # via code-annotations
@@ -336,7 +336,7 @@ urllib3==2.2.3
     #   twine
 uvicorn==0.34.0
     # via pact-python
-virtualenv==20.29.1
+virtualenv==20.29.2
     # via tox
 yarl==1.18.3
     # via pact-python

requirements/quality.txt

@@ -43,19 +43,19 @@ code-annotations==2.2.0
     # via
     #   edx-lint
     #   edx-toggles
-coverage[toml]==7.6.10
+coverage[toml]==7.6.12
     # via
     #   -r requirements/test.in
     #   pytest-cov
-cryptography==44.0.0
+cryptography==44.0.1
     # via
     #   pyjwt
     #   secretstorage
 ddt==1.7.2
     # via -r requirements/test.in
 dill==0.3.9
     # via pylint
-django==4.2.18
+django==4.2.19
     # via
     #   -c requirements/common_constraints.txt
     #   -r requirements/base.in
@@ -143,7 +143,7 @@ jinja2==3.1.5
     # via code-annotations
 keyring==25.6.0
     # via twine
-lxml==5.3.0
+lxml==5.3.1
     # via -r requirements/base.in
 markdown-it-py==3.0.0
     # via rich
@@ -161,7 +161,7 @@ more-itertools==10.6.0
     #   jaraco-functools
 multidict==6.1.0
     # via yarl
-newrelic==10.5.0
+newrelic==10.6.0
     # via edx-django-utils
 nh3==0.2.20
     # via readme-renderer
@@ -171,7 +171,7 @@ packaging==24.2
     #   twine
 pact-python==2.3.1
     # via -r requirements/test.in
-pbr==6.1.0
+pbr==6.1.1
     # via stevedore
 pillow==11.1.0
     # via -r requirements/base.in
@@ -217,7 +217,7 @@ pylint-plugin-utils==0.8.2
     # via
     #   pylint-celery
     #   pylint-django
-pymongo==4.11
+pymongo==4.11.1
     # via edx-opaque-keys
 pynacl==1.5.0
     # via edx-django-utils
@@ -229,7 +229,7 @@ pytest==8.3.4
     #   pytest-django
 pytest-cov==6.0.0
     # via -r requirements/test.in
-pytest-django==4.9.0
+pytest-django==4.10.0
     # via -r requirements/test.in
 python-slugify==8.0.4
     # via code-annotations

requirements/test.txt

@@ -31,11 +31,11 @@ click==8.1.8
     #   uvicorn
 code-annotations==2.2.0
     # via edx-toggles
-coverage[toml]==7.6.10
+coverage[toml]==7.6.12
     # via
     #   -r requirements/test.in
     #   pytest-cov
-cryptography==44.0.0
+cryptography==44.0.1
     # via pyjwt
 ddt==1.7.2
     # via -r requirements/test.in
@@ -100,21 +100,21 @@ iniconfig==2.0.0
     # via pytest
 jinja2==3.1.5
     # via code-annotations
-lxml==5.3.0
+lxml==5.3.1
     # via -r requirements/base.in
 markupsafe==3.0.2
     # via jinja2
 mock==5.1.0
     # via -r requirements/test.in
 multidict==6.1.0
     # via yarl
-newrelic==10.5.0
+newrelic==10.6.0
     # via edx-django-utils
 packaging==24.2
     # via pytest
 pact-python==2.3.1
     # via -r requirements/test.in
-pbr==6.1.0
+pbr==6.1.1
     # via stevedore
 pillow==11.1.0
     # via -r requirements/base.in
@@ -136,7 +136,7 @@ pyjwt[crypto]==2.10.1
     # via
     #   drf-jwt
     #   edx-drf-extensions
-pymongo==4.11
+pymongo==4.11.1
     # via edx-opaque-keys
 pynacl==1.5.0
     # via edx-django-utils
@@ -148,7 +148,7 @@ pytest==8.3.4
     #   pytest-django
 pytest-cov==6.0.0
     # via -r requirements/test.in
-pytest-django==4.9.0
+pytest-django==4.10.0
     # via -r requirements/test.in
 python-slugify==8.0.4
     # via code-annotations