Merge pull request #16619 from edx/WIP-lms-bundling-button

Program Details Page one-click purchase button with entitlements

common/djangoapps/course_modes/models.py

@@ -136,10 +136,10 @@ class CourseMode(models.Model):
 
     HONOR = 'honor'
     PROFESSIONAL = 'professional'
-    VERIFIED = "verified"
-    AUDIT = "audit"
-    NO_ID_PROFESSIONAL_MODE = "no-id-professional"
-    CREDIT_MODE = "credit"
+    VERIFIED = 'verified'
+    AUDIT = 'audit'
+    NO_ID_PROFESSIONAL_MODE = 'no-id-professional'
+    CREDIT_MODE = 'credit'
 
     DEFAULT_MODE = Mode(
         settings.COURSE_MODE_DEFAULTS['slug'],

common/djangoapps/entitlements/models.py

@@ -24,3 +24,10 @@ class CourseEntitlement(TimeStampedModel):
         help_text='The current Course enrollment for this entitlement. If NULL the Learner has not enrolled.'
     )
     order_number = models.CharField(max_length=128, null=True)
+
+    @property
+    def expired_at_datetime(self):
+        """
+        Getter to be used instead of expired_at because of the conditional check and update
+        """
+        return self.expired_at

openedx/core/djangoapps/catalog/tests/factories.py

@@ -8,6 +8,7 @@ from faker import Faker
 
 
 fake = Faker()
+VERIFIED_MODE = 'verified'
 
 
 def generate_instances(factory_class, count=3):
@@ -103,10 +104,18 @@ class SeatFactory(DictFactoryBase):
     currency = 'USD'
     price = factory.Faker('random_int')
     sku = factory.LazyFunction(generate_seat_sku)
-    type = 'verified'
+    type = VERIFIED_MODE
     upgrade_deadline = factory.LazyFunction(generate_zulu_datetime)
 
 
+class EntitlementFactory(DictFactoryBase):
+    currency = 'USD'
+    price = factory.Faker('random_int')
+    sku = factory.LazyFunction(generate_seat_sku)
+    mode = VERIFIED_MODE
+    expires = None
+
+
 class CourseRunFactory(DictFactoryBase):
     eligible_for_financial_aid = True
     end = factory.LazyFunction(generate_zulu_datetime)
@@ -121,7 +130,7 @@ class CourseRunFactory(DictFactoryBase):
     start = factory.LazyFunction(generate_zulu_datetime)
     status = 'published'
     title = factory.Faker('catch_phrase')
-    type = 'verified'
+    type = VERIFIED_MODE
     uuid = factory.Faker('uuid4')
     content_language = 'en'
     max_effort = 4
@@ -130,6 +139,7 @@ class CourseRunFactory(DictFactoryBase):
 
 class CourseFactory(DictFactoryBase):
     course_runs = factory.LazyFunction(partial(generate_instances, CourseRunFactory))
+    entitlements = factory.LazyFunction(partial(generate_instances, EntitlementFactory))
     image = ImageFactory()
     key = factory.LazyFunction(generate_course_key)
     owners = factory.LazyFunction(partial(generate_instances, OrganizationFactory, count=1))

openedx/core/djangoapps/programs/utils.py

@@ -460,55 +460,97 @@ class ProgramDataExtender(object):
     def _attach_course_run_may_certify(self, run_mode):
         run_mode['may_certify'] = self.course_overview.may_certify()
 
-    def _check_enrollment_for_user(self, course_run):
-        applicable_seat_types = self.data['applicable_seat_types']
+    def _filter_out_courses_with_entitlements(self, courses):
+        """
+        Removes courses for which the current user already holds an applicable entitlement.
+
+        TODO:
+            Add a NULL value of enrollment_course_run to filter, as courses with entitlements spent on applicable
+            enrollments will already have been filtered out by _filter_out_courses_with_enrollments.
+
+        Arguments:
+            courses (list): Containing dicts representing courses in a program
 
-        (enrollment_mode, active) = CourseEnrollment.enrollment_mode_for_user(
-            self.user,
-            CourseKey.from_string(course_run['key'])
+        Returns:
+            A subset of the given list of course dicts
+        """
+        course_uuids = set(course['uuid'] for course in courses)
+        # Filter the entitlements' modes with a case-insensitive match against applicable seat_types
+        entitlements = self.user.courseentitlement_set.filter(
+            mode__in=self.data['applicable_seat_types'],
+            course_uuid__in=course_uuids,
         )
+        # Here we check the entitlements' expired_at_datetime property rather than filter by the expired_at attribute
+        # to ensure that the expiration status is as up to date as possible
+        entitlements = [e for e in entitlements if not e.expired_at_datetime]
+        courses_with_entitlements = set(unicode(entitlement.course_uuid) for entitlement in entitlements)
+        return [course for course in courses if course['uuid'] not in courses_with_entitlements]
+
+    def _filter_out_courses_with_enrollments(self, courses):
+        """
+        Removes courses for which the current user already holds an active and applicable enrollment
+        for one of that course's runs.
 
-        is_paid_seat = False
-        if enrollment_mode is not None and active is not None and active is True:
-            # Check all the applicable seat types
-            # this will also check for no-id-professional as professional
-            is_paid_seat = any(seat_type in enrollment_mode for seat_type in applicable_seat_types)
+        Arguments:
+            courses (list): Containing dicts representing courses in a program
 
-        return is_paid_seat
+        Returns:
+            A subset of the given list of course dicts
+        """
+        enrollments = self.user.courseenrollment_set.filter(
+            is_active=True,
+            mode__in=self.data['applicable_seat_types']
+        )
+        course_runs_with_enrollments = set(unicode(enrollment.course_id) for enrollment in enrollments)
+        courses_without_enrollments = []
+        for course in courses:
+            if all(unicode(run['key']) not in course_runs_with_enrollments for run in course['course_runs']):
+                courses_without_enrollments.append(course)
+
+        return courses_without_enrollments
 
     def _collect_one_click_purchase_eligibility_data(self):
         """
         Extend the program data with data about learner's eligibility for one click purchase,
         discount data of the program and SKUs of seats that should be added to basket.
         """
-        applicable_seat_types = self.data['applicable_seat_types']
+        if 'professional' in self.data['applicable_seat_types']:
+            self.data['applicable_seat_types'].append('no-id-professional')
+        applicable_seat_types = set(seat for seat in self.data['applicable_seat_types'] if seat != 'credit')
+
         is_learner_eligible_for_one_click_purchase = self.data['is_program_eligible_for_one_click_purchase']
         skus = []
         bundle_variant = 'full'
+
         if is_learner_eligible_for_one_click_purchase:
-            for course in self.data['courses']:
-                add_course_sku = True
-                course_runs = course.get('course_runs', [])
-                published_course_runs = filter(lambda run: run['status'] == 'published', course_runs)
+            courses = self.data['courses']
+            if not self.user.is_anonymous():
+                courses = self._filter_out_courses_with_enrollments(courses)
+                courses = self._filter_out_courses_with_entitlements(courses)
 
-                if len(published_course_runs) == 1:
-                    for course_run in course_runs:
-                        is_paid_seat = self._check_enrollment_for_user(course_run)
+            if len(courses) < len(self.data['courses']):
+                bundle_variant = 'partial'
 
-                        if is_paid_seat:
-                            add_course_sku = False
+            for course in courses:
+                entitlement_product = False
+                for entitlement in course.get('entitlements', []):
+                    # We add the first entitlement product found with an applicable seat type because, at this time,
+                    # we are assuming that, for any given course, there is at most one paid entitlement available.
+                    if entitlement['mode'] in applicable_seat_types:
+                        skus.append(entitlement['sku'])
+                        entitlement_product = True
                         break
-
-                    if add_course_sku:
+                if not entitlement_product:
+                    course_runs = course.get('course_runs', [])
+                    published_course_runs = [run for run in course_runs if run['status'] == 'published']
+                    if len(published_course_runs) == 1:
                         for seat in published_course_runs[0]['seats']:
                             if seat['type'] in applicable_seat_types and seat['sku']:
                                 skus.append(seat['sku'])
-                    else:
-                        bundle_variant = 'partial'
+                                break
                     else:
                         # If a course in the program has more than 1 published course run
                         # learner won't be eligible for a one click purchase.
-                    is_learner_eligible_for_one_click_purchase = False
                         skus = []
                         break
 
@@ -604,7 +646,7 @@ class ProgramMarketingDataExtender(ProgramDataExtender):
     def __init__(self, program_data, user):
         super(ProgramMarketingDataExtender, self).__init__(program_data, user)
 
-        # Aggregate list of instructors for the program
+        # Aggregate list of instructors for the program keyed by name
         self.instructors = []
 
         # Values for programs' price calculation.