""" The public API for certificates. """ from datetime import datetime from pytz import UTC from course_modes.models import CourseMode from openedx.core.djangoapps.certificates.config import waffle from student.models import CourseEnrollment SWITCHES = waffle.waffle() def auto_certificate_generation_enabled(): return SWITCHES.is_enabled(waffle.AUTO_CERTIFICATE_GENERATION) def _enabled_and_instructor_paced(course): if auto_certificate_generation_enabled(): return not course.self_paced return False def certificates_viewable_for_course(course): """ Returns True if certificates are viewable for any student enrolled in the course, False otherwise. """ if course.self_paced: return True if ( course.certificates_display_behavior in ('early_with_info', 'early_no_info') or course.certificates_show_before_end ): return True if ( course.certificate_available_date and course.certificate_available_date <= datetime.now(UTC) ): return True if ( course.certificate_available_date is None and course.has_ended() ): return True return False def is_certificate_valid(certificate): """ Returns True if the student has a valid, verified certificate for this course, False otherwise. """ return CourseEnrollment.is_enrolled_as_verified(certificate.user, certificate.course_id) and certificate.is_valid() def can_show_certificate_message(course, student, course_grade, certificates_enabled_for_course): if not ( (auto_certificate_generation_enabled() or certificates_enabled_for_course) and CourseEnrollment.is_enrolled(student, course.id) and certificates_viewable_for_course(course) and course_grade.passed ): return False return True def can_show_certificate_available_date_field(course): return _enabled_and_instructor_paced(course) def display_date_for_certificate(course, certificate): if ( auto_certificate_generation_enabled() and not course.self_paced and course.certificate_available_date and course.certificate_available_date < datetime.now(UTC) ): return course.certificate_available_date return certificate.modified_date