feat: [FC-0047] Implement user's enrolments status API (#2530)

lms/djangoapps/mobile_api/users/tests.py

@@ -9,6 +9,7 @@
 
 import ddt
 import pytz
+from completion.models import BlockCompletion
 from completion.test_utils import CompletionWaffleTestMixin, submit_completions_for_testing
 from django.conf import settings
 from django.db import transaction
@@ -1381,3 +1382,145 @@ def test_discussion_tab_url(self, discussion_tab_enabled):
             assert isinstance(discussion_url, str)
         else:
             assert discussion_url is None
+
+
+@ddt.ddt
+class TestUserEnrollmentsStatus(MobileAPITestCase, MobileAuthUserTestMixin):
+    """
+    Tests for /api/mobile/{api_version}/users/<user_name>/enrollments_status/
+    """
+
+    REVERSE_INFO = {'name': 'user-enrollments-status', 'params': ['username', 'api_version']}
+
+    def test_no_mobile_available_courses(self) -> None:
+        self.login()
+        courses = [CourseFactory.create(org="edx", mobile_available=False) for _ in range(3)]
+        for course in courses:
+            self.enroll(course.id)
+
+        response = self.api_response(api_version=API_V1)
+
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertListEqual(response.data, [])
+
+    def test_no_enrollments(self) -> None:
+        self.login()
+        for _ in range(3):
+            CourseFactory.create(org="edx", mobile_available=True)
+
+        response = self.api_response(api_version=API_V1)
+
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertListEqual(response.data, [])
+
+    def test_user_have_only_active_enrollments_and_no_completions(self) -> None:
+        self.login()
+        courses = [CourseFactory.create(org="edx", mobile_available=True) for _ in range(3)]
+        for course in courses:
+            self.enroll(course.id)
+
+        response = self.api_response(api_version=API_V1)
+
+        expected_response = [
+            {'course_id': str(courses[0].course_id), 'course_name': courses[0].display_name, 'recently_active': True},
+            {'course_id': str(courses[1].course_id), 'course_name': courses[1].display_name, 'recently_active': True},
+            {'course_id': str(courses[2].course_id), 'course_name': courses[2].display_name, 'recently_active': True},
+        ]
+
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertListEqual(response.data, expected_response)
+
+    def test_user_have_active_and_inactive_enrollments_and_no_completions(self) -> None:
+        self.login()
+        courses = [CourseFactory.create(org="edx", mobile_available=True) for _ in range(3)]
+        for course in courses:
+            self.enroll(course.id)
+        old_course = CourseFactory.create(org="edx", mobile_available=True)
+        self.enroll(old_course.id)
+        old_enrollment = CourseEnrollment.objects.filter(user=self.user, course=old_course.course_id).first()
+        old_enrollment.created = datetime.datetime.now(pytz.UTC) - datetime.timedelta(days=31)
+        old_enrollment.save()
+
+        response = self.api_response(api_version=API_V1)
+
+        expected_response = [
+            {'course_id': str(courses[0].course_id), 'course_name': courses[0].display_name, 'recently_active': True},
+            {'course_id': str(courses[1].course_id), 'course_name': courses[1].display_name, 'recently_active': True},
+            {'course_id': str(courses[2].course_id), 'course_name': courses[2].display_name, 'recently_active': True},
+            {'course_id': str(old_course.course_id), 'course_name': old_course.display_name, 'recently_active': False}
+        ]
+
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertListEqual(response.data, expected_response)
+
+    @ddt.data(
+        (27, True),
+        (28, True),
+        (29, True),
+        (31, False),
+        (32, False),
+    )
+    @ddt.unpack
+    def test_different_enrollment_dates(self, enrolled_days_ago: int, recently_active_status: bool) -> None:
+        self.login()
+        course = CourseFactory.create(org="edx", mobile_available=True, run='1001')
+        self.enroll(course.id)
+        enrollment = CourseEnrollment.objects.filter(user=self.user, course=course.course_id).first()
+        enrollment.created = datetime.datetime.now(pytz.UTC) - datetime.timedelta(days=enrolled_days_ago)
+        enrollment.save()
+
+        response = self.api_response(api_version=API_V1)
+
+        expected_response = [
+            {
+                'course_id': str(course.course_id),
+                'course_name': course.display_name,
+                'recently_active': recently_active_status
+            }
+        ]
+
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertListEqual(response.data, expected_response)
+
+    @ddt.data(
+        (27, True),
+        (28, True),
+        (29, True),
+        (31, False),
+        (32, False),
+    )
+    @ddt.unpack
+    def test_different_completion_dates(self, completed_days_ago: int, recently_active_status: bool) -> None:
+        self.login()
+        course = CourseFactory.create(org="edx", mobile_available=True, run='1010')
+        section = BlockFactory.create(
+            parent=course,
+            category='chapter',
+        )
+        self.enroll(course.id)
+        enrollment = CourseEnrollment.objects.filter(user=self.user, course=course.course_id).first()
+        # make enrollment older 30 days ago
+        enrollment.created = datetime.datetime.now(pytz.UTC) - datetime.timedelta(days=50)
+        enrollment.save()
+        completion = BlockCompletion.objects.create(
+            user=self.user,
+            context_key=course.context_key,
+            block_type='course',
+            block_key=section.location,
+            completion=0.5,
+        )
+        completion.created = datetime.datetime.now(pytz.UTC) - datetime.timedelta(days=completed_days_ago)
+        completion.save()
+
+        response = self.api_response(api_version=API_V1)
+
+        expected_response = [
+            {
+                'course_id': str(course.course_id),
+                'course_name': course.display_name,
+                'recently_active': recently_active_status
+            }
+        ]
+
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertListEqual(response.data, expected_response)

lms/djangoapps/mobile_api/users/urls.py

@@ -6,7 +6,7 @@
 from django.conf import settings
 from django.urls import re_path
 
-from .views import UserCourseEnrollmentsList, UserCourseStatus, UserDetail
+from .views import UserCourseEnrollmentsList, UserCourseStatus, UserDetail, UserEnrollmentsStatus
 
 urlpatterns = [
     re_path('^' + settings.USERNAME_PATTERN + '$', UserDetail.as_view(), name='user-detail'),
@@ -17,5 +17,8 @@
     ),
     re_path(f'^{settings.USERNAME_PATTERN}/course_status_info/{settings.COURSE_ID_PATTERN}',
             UserCourseStatus.as_view(),
-            name='user-course-status')
+            name='user-course-status'),
+    re_path(f'^{settings.USERNAME_PATTERN}/enrollments_status/',
+            UserEnrollmentsStatus.as_view(),
+            name='user-enrollments-status')
 ]

lms/djangoapps/mobile_api/users/views.py

@@ -3,11 +3,14 @@
 """
 
 
+import datetime
 import logging
 from functools import cached_property
-from typing import Optional
+from typing import Dict, List, Optional, Set
 
+import pytz
 from completion.exceptions import UnavailableCompletionData
+from completion.models import BlockCompletion
 from completion.utilities import get_key_to_last_completed_block
 from django.contrib.auth.models import User  # lint-amnesty, pylint: disable=imported-auth-user
 from django.contrib.auth.signals import user_logged_in
@@ -17,6 +20,7 @@
 from django.utils.decorators import method_decorator
 from opaque_keys import InvalidKeyError
 from opaque_keys.edx.keys import UsageKey
+from opaque_keys.edx.locator import CourseLocator
 from rest_framework import generics, views
 from rest_framework.decorators import api_view
 from rest_framework.permissions import SAFE_METHODS
@@ -530,6 +534,133 @@ def my_user_info(request, api_version):
     return redirect("user-detail", api_version=api_version, username=request.user.username)
 
 
+@mobile_view(is_user=True)
+class UserEnrollmentsStatus(views.APIView):
+    """
+    **Use Case**
+
+        Get information about user's enrolments status.
+
+        Returns active enrolment status if user was enrolled for the course
+        less than 30 days ago or has progressed in the course in the last 30 days.
+        Otherwise, the registration is considered inactive.
+
+        USER_ENROLLMENTS_LIMIT - adds users enrollments query limit to
+        safe API from possible DDOS attacks.
+
+    **Example Request**
+
+        GET /api/mobile/{api_version}/users/<user_name>/enrollments_status/
+
+    **Response Values**
+
+        If the request for information about the user's enrolments is successful, the
+        request returns an HTTP 200 "OK" response.
+
+        The HTTP 200 response has the following values.
+
+        * course_id (str): The course id associated with the user's enrollment.
+        * course_name (str): The course name associated with the user's enrollment.
+        * recently_active (bool): User's course enrolment status.
+
+
+        The HTTP 200 response contains a list of dictionaries that contain info
+        about each user's enrolment status.
+
+    **Example Response**
+
+        ```json
+        [
+            {
+                "course_id": "course-v1:a+a+a",
+                "course_name": "a",
+                "recently_active": true
+            },
+            {
+                "course_id": "course-v1:b+b+b",
+                "course_name": "b",
+                "recently_active": true
+            },
+            {
+                "course_id": "course-v1:c+c+c",
+                "course_name": "c",
+                "recently_active": false
+            },
+            ...
+        ]
+        ```
+    """
+
+    USER_ENROLLMENTS_LIMIT = 500
+
+    def get(self, request, *args, **kwargs) -> Response:
+        """
+        Gets user's enrollments status.
+        """
+        active_status_date = datetime.datetime.now(pytz.UTC) - datetime.timedelta(days=30)
+        username = kwargs.get('username')
+        course_ids_where_user_has_completions = self._get_course_ids_where_user_has_completions(
+            username,
+            active_status_date,
+        )
+        enrollments_status = self._build_enrollments_status_dict(
+            username,
+            active_status_date,
+            course_ids_where_user_has_completions
+        )
+        return Response(enrollments_status)
+
+    def _build_enrollments_status_dict(
+        self,
+        username: str,
+        active_status_date: datetime,
+        course_ids: Set[CourseLocator],
+    ) -> List[Dict[str, bool]]:
+        """
+        Builds list with dictionaries with user's enrolments statuses.
+        """
+        user = get_object_or_404(User, username=username)
+        user_enrollments = (
+            CourseEnrollment
+            .enrollments_for_user(user)
+            .select_related('course')
+            [:self.USER_ENROLLMENTS_LIMIT]
+        )
+        mobile_available = [
+            enrollment for enrollment in user_enrollments
+            if is_mobile_available_for_user(user, enrollment.course_overview)
+        ]
+        enrollments_status = []
+        for user_enrollment in mobile_available:
+            course_id = user_enrollment.course_overview.id
+            enrollments_status.append(
+                {
+                    'course_id': str(course_id),
+                    'course_name': user_enrollment.course_overview.display_name,
+                    'recently_active': bool(
+                        course_id in course_ids
+                        or user_enrollment.created > active_status_date
+                    )
+                }
+            )
+        return enrollments_status
+
+    @staticmethod
+    def _get_course_ids_where_user_has_completions(
+        username: str,
+        active_status_date: datetime,
+    ) -> Set[CourseLocator]:
+        """
+        Gets course keys where user has completions.
+        """
+        context_keys = BlockCompletion.objects.filter(
+            user__username=username,
+            created__gte=active_status_date
+        ).values_list('context_key', flat=True).distinct()
+
+        return set(context_keys)
+
+
 class UserCourseEnrollmentsV4Pagination(DefaultPagination):
     """
     Pagination for `UserCourseEnrollments` API v4.