181 lines
7.4 KiB
Python
181 lines
7.4 KiB
Python
""" API v0 views. """
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import logging
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from urllib.parse import urljoin
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from django.urls import reverse
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from edx_rest_framework_extensions.auth.jwt.authentication import JwtAuthentication
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from opaque_keys import InvalidKeyError
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from opaque_keys.edx.keys import CourseKey
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from requests.exceptions import HTTPError
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from rest_framework.permissions import IsAuthenticated
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from rest_framework.status import HTTP_406_NOT_ACCEPTABLE, HTTP_409_CONFLICT
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from rest_framework.views import APIView
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from common.djangoapps.course_modes.models import CourseMode
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from common.djangoapps.entitlements.models import CourseEntitlement
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from common.djangoapps.student.models import CourseEnrollment
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from common.djangoapps.util.json_request import JsonResponse
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from lms.djangoapps.courseware import courses
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from openedx.core.djangoapps.commerce.utils import get_ecommerce_api_base_url, get_ecommerce_api_client
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from openedx.core.djangoapps.embargo import api as embargo_api
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from openedx.core.djangoapps.enrollments.api import add_enrollment
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from openedx.core.djangoapps.enrollments.views import EnrollmentCrossDomainSessionAuth
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from openedx.core.djangoapps.user_api.preferences.api import update_email_opt_in
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from openedx.core.lib.api.authentication import BearerAuthenticationAllowInactiveUser
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from ...constants import Messages
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from ...http import DetailResponse
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log = logging.getLogger(__name__)
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class BasketsView(APIView):
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""" Creates a basket with a course seat and enrolls users. """
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# LMS utilizes User.user_is_active to indicate email verification, not whether an account is active. Sigh!
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authentication_classes = (JwtAuthentication,
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BearerAuthenticationAllowInactiveUser,
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EnrollmentCrossDomainSessionAuth)
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permission_classes = (IsAuthenticated,)
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def _is_data_valid(self, request):
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"""
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Validates the data posted to the view.
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Arguments
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request -- HTTP request
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Returns
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Tuple (data_is_valid, course_key, error_msg)
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"""
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course_id = request.data.get('course_id')
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if not course_id:
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return False, None, 'Field course_id is missing.'
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try:
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course_key = CourseKey.from_string(course_id)
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courses.get_course(course_key)
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except (InvalidKeyError, ValueError) as ex:
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log.exception('Unable to locate course matching %s.', course_id)
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return False, None, str(ex)
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return True, course_key, None
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def _enroll(self, course_key, user, mode=CourseMode.DEFAULT_MODE_SLUG):
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""" Enroll the user in the course. """
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add_enrollment(user.username, str(course_key), mode)
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def _handle_marketing_opt_in(self, request, course_key, user):
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"""
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Handle the marketing email opt-in flag, if it was set.
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Errors here aren't expected, but should not break the outer enrollment transaction.
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"""
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email_opt_in = request.data.get('email_opt_in', None)
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if email_opt_in is not None:
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try:
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update_email_opt_in(user, course_key.org, email_opt_in)
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except Exception: # pylint: disable=broad-except
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# log the error, return silently
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log.exception(
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'Failed to handle marketing opt-in flag: user="%s", course="%s"', user.username, course_key
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)
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def post(self, request, *args, **kwargs): # lint-amnesty, pylint: disable=unused-argument
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"""
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Attempt to enroll the user.
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"""
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user = request.user
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valid, course_key, error = self._is_data_valid(request)
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if not valid:
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return DetailResponse(error, status=HTTP_406_NOT_ACCEPTABLE)
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embargo_response = embargo_api.get_embargo_response(request, course_key, user)
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if embargo_response:
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return embargo_response
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# Don't do anything if an enrollment already exists
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course_id = str(course_key)
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enrollment = CourseEnrollment.get_enrollment(user, course_key)
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if enrollment and enrollment.is_active:
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msg = Messages.ENROLLMENT_EXISTS.format(course_id=course_id, username=user.username)
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return DetailResponse(msg, status=HTTP_409_CONFLICT)
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# Check to see if enrollment for this course is closed.
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course = courses.get_course(course_key)
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if CourseEnrollment.is_enrollment_closed(user, course):
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msg = Messages.ENROLLMENT_CLOSED.format(course_id=course_id)
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log.info('Unable to enroll user %s in closed course %s.', user.id, course_id)
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return DetailResponse(msg, status=HTTP_406_NOT_ACCEPTABLE)
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# If there is no audit or honor course mode, this most likely
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# a Prof-Ed course. Return an error so that the JS redirects
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# to track selection.
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honor_mode = CourseMode.mode_for_course(course_key, CourseMode.HONOR)
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audit_mode = CourseMode.mode_for_course(course_key, CourseMode.AUDIT)
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# Check to see if the User has an entitlement and enroll them if they have one for this course
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if CourseEntitlement.check_for_existing_entitlement_and_enroll(user=user, course_run_key=course_key):
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return JsonResponse(
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{
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'redirect_destination': reverse('courseware', args=[str(course_id)]),
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},
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)
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# Accept either honor or audit as an enrollment mode to
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# maintain backwards compatibility with existing courses
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default_enrollment_mode = audit_mode or honor_mode
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course_name = None
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course_announcement = None
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if course is not None:
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course_name = course.display_name
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course_announcement = course.announcement
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if default_enrollment_mode:
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msg = Messages.ENROLL_DIRECTLY.format(
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username=user.username,
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course_id=course_id
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)
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if not default_enrollment_mode.sku:
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# If there are no course modes with SKUs, return a different message.
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msg = Messages.NO_SKU_ENROLLED.format(
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enrollment_mode=default_enrollment_mode.slug,
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course_id=course_id,
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course_name=course_name,
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username=user.username,
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announcement=course_announcement
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)
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log.info(msg)
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self._enroll(course_key, user, default_enrollment_mode.slug)
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mode = CourseMode.AUDIT if audit_mode else CourseMode.HONOR # lint-amnesty, pylint: disable=unused-variable
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self._handle_marketing_opt_in(request, course_key, user)
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return DetailResponse(msg)
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else:
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msg = Messages.NO_DEFAULT_ENROLLMENT_MODE.format(course_id=course_id)
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return DetailResponse(msg, status=HTTP_406_NOT_ACCEPTABLE)
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class BasketOrderView(APIView):
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"""
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Retrieve the order associated with a basket.
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"""
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permission_classes = (IsAuthenticated,)
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def get(self, request, *_args, **kwargs):
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"""
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HTTP handler.
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"""
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try:
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api_url = urljoin(f"{get_ecommerce_api_base_url()}/", f"baskets/{kwargs['basket_id']}/order/")
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response = get_ecommerce_api_client(request.user).get(api_url)
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response.raise_for_status()
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return JsonResponse(response.json())
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except HTTPError as err:
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if err.response.status_code == 404:
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return JsonResponse(status=404)
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raise
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