TMSS-770: Update get_saps for project reporting

SAS/TMSS/backend/src/tmss/tmssapp/adapters/reports.py

@@ -405,5 +405,22 @@ def _get_saps(project_pk: int) -> []:
     """
     Help function to retrieve SAPs.
     """
-    # TODO: For each unique target (SAP name) get the sum of target observation durations from the tasks.
-    return [{'sap_name': 'placeholder', 'total_exposure': 0}, ]
+    result = []
+
+    # TODO: Check if this is the proper way.
+
+    project_subs = models.SchedulingUnitBlueprint.objects.filter(draft__scheduling_set__project__pk=project_pk)
+    for sub in project_subs:
+        target_name, total_exposure = None, 0
+        try:
+            target_name = get_target_observation_task_name_from_requirements_doc(sub)
+        except Exception as e:
+            pass
+        control_subtasks = models.Subtask.objects.filter(task_blueprints__scheduling_unit_blueprint=sub).filter(specifications_template__name='observation control')
+        for cs in control_subtasks:
+            if target_name in cs.SAPs.all():
+                total_exposure += cs.duration.total_seconds()
+        if target_name:
+            result.append({'sap_name': target_name, 'total_exposure': total_exposure})
+
+    return result