From b84f82cceefcfa05e110ea5b817a7bf018282ec6 Mon Sep 17 00:00:00 2001
From: Cristhian Garcia <crisgarta8@gmail.com>
Date: Fri, 8 Sep 2023 10:11:12 -0500
Subject: [PATCH] feat: add xapi transformer for exam attempts events

---
 docs/event-mapping/Supported_events.rst       |  6 ++
 .../xapi/event_transformers/exam_events.py    | 69 +++++++++++++++++++
 2 files changed, 75 insertions(+)
 create mode 100644 event_routing_backends/processors/xapi/event_transformers/exam_events.py

diff --git a/docs/event-mapping/Supported_events.rst b/docs/event-mapping/Supported_events.rst
index 92b980c6..71ba7254 100644
--- a/docs/event-mapping/Supported_events.rst
+++ b/docs/event-mapping/Supported_events.rst
@@ -72,6 +72,12 @@ Forum events
 * `edx.forum.comment.reported`_ | edX `sample <../../event_routing_backends/processors/tests/fixtures/current/edx.forum.comment.reported.json>`__ | xAPI `map <./xAPI_mapping.rst#edx.forum.comment.reported>`__ , `sample <../../event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.reported.json>`__
 * `edx.forum.comment.unreported`_ | edX `sample <../../event_routing_backends/processors/tests/fixtures/current/edx.forum.comment.unreported.json>`__ | xAPI `map <./xAPI_mapping.rst#edx.forum.comment.unreported>`__ , `sample <../../event_routing_backends/processors/xapi/tests/fixtures/expected/edx.forum.comment.unreported.json>`__
 
+Exam events
+------------------
+
+* `edx.special_exam.practice.attempt.started`_ | edX `sample <../../event_routing_backends/processors/tests/fixtures/current/edx.special_exam.practice.attempt.started.json>` | xAPI `map <./xAPI_mapping.rst#edx-special-exam-practire-attempt-started>` , `sample <../../event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.practice.attempt.started.json>`__
+* `edx.special_exam.practice.attempt.submitted`_ | edX `sample <../../event_routing_backends/processors/tests/fixtures/current/edx.special_exam.practice.attempt.submitted.json>` | xAPI `map <./xAPI_mapping.rst#edx-special-exam-practire-attempt-submitted>` , `sample <../../event_routing_backends/processors/xapi/tests/fixtures/expected/edx.special_exam.practice.attempt.submitted.json>`__
+
 
 .. _edx.course.enrollment.activated: http://edx.readthedocs.io/projects/devdata/en/latest/internal_data_formats/tracking_logs/student_event_types.html#edx-course-enrollment-activated-and-edx-course-enrollment-deactivated
 .. _edx.course.enrollment.deactivated: http://edx.readthedocs.io/projects/devdata/en/latest/internal_data_formats/tracking_logs/student_event_types.html#edx-course-enrollment-activated-and-edx-course-enrollment-deactivated
diff --git a/event_routing_backends/processors/xapi/event_transformers/exam_events.py b/event_routing_backends/processors/xapi/event_transformers/exam_events.py
new file mode 100644
index 00000000..051868bb
--- /dev/null
+++ b/event_routing_backends/processors/xapi/event_transformers/exam_events.py
@@ -0,0 +1,69 @@
+"""
+Transformers for enrollment related events.
+"""
+
+from tincan import Activity, ActivityDefinition, Extensions, LanguageMap, Verb
+
+from event_routing_backends.helpers import get_course_from_id
+from event_routing_backends.processors.xapi import constants
+from event_routing_backends.processors.xapi.registry import XApiTransformersRegistry
+from event_routing_backends.processors.xapi.transformer import XApiTransformer
+
+
+class BaseExamAttemptTransformer(XApiTransformer):
+    """
+    Base transformer for exam attempt events.
+    """
+
+    def get_context_activities(self):
+        """
+        Get context activities for xAPI transformed event.
+
+        Returns:
+            `ContextActivities`
+        """
+
+        return None
+
+    def get_object(self):
+        """
+        Get object for xAPI transformed event.
+
+        Returns:
+            `Activity`
+        """
+        object_id = 'dummy' ## TODO Load the object id from the event
+
+        return Activity(
+            id=object_id,
+            definition=ActivityDefinition(
+                type=constants.XAPI_ACTIVITY_ATTEMPT,
+                extensions=Extensions({
+                    constants.XAPI_ACTIVITY_ID: self.get_data('data.attempt_id'),
+                    constants.XAPI_ACTIVITY_ATTEMPT_STATUS: self.get_data('data.attempt_status'),
+                    constants.XAPI_ACTIVITY_ATTEMPT_TIME: self.get_data('data.attempt_event_elapsed_time_secs'),
+                })
+            ),
+        )
+
+
+@XApiTransformersRegistry.register('edx.special_exam.practice.attempt.started')
+class EnrollmentActivatedTransformer(BaseExamAttemptTransformer):
+    """
+    Transformers for event generated when learner start an exam attempt.
+    """
+    verb = Verb(
+        id=constants.XAPI_VERB_STARTED,
+        display=LanguageMap({constants.EN: constants.STARTED}),
+    )
+
+
+@XApiTransformersRegistry.register('edx.special_exam.practice.attempt.submitted')
+class EnrollmentDeactivatedTransformer(BaseExamAttemptTransformer):
+    """
+    Transformers for event generated when learner submit an exam attempt.
+    """
+    verb = Verb(
+        id=constants.XAPI_VERB_SUBMITTED,
+        display=LanguageMap({constants.EN: constants.SUBMITTED}),
+    )