Added option to start exam which serves as an alternative to start date for the exam

src/utils/assignments.ts

@@ -0,0 +1,18 @@
+import moment from "moment";
+import { Assignment } from "@/interfaces/results";
+
+export const futureAssignmentFilter = (a: Assignment) =>
+  moment(a.startDate).isAfter(moment()) && !a.archived && !a.start;
+
+export const pastAssignmentFilter = (a: Assignment) =>
+  (moment(a.endDate).isBefore(moment()) ||
+    a.assignees.length === a.results.length ||
+    (moment(a.startDate).isBefore(moment()) && !a.start)) &&
+  !a.archived;
+export const archivedAssignmentFilter = (a: Assignment) => a.archived;
+
+export const activeAssignmentFilter = (a: Assignment) =>
+  moment(a.endDate).isAfter(moment()) &&
+  // && moment(a.startDate).isBefore(moment())
+  a.start &&
+  a.assignees.length > a.results.length;