All files / libs/assignments/common/shared/src/lib is-assignment-effective.ts

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import { type Period } from '@amalia/payout-definition/periods/types';
 
import { type AssignmentDates } from './types';
 
export const isAssignmentEffective = (assignment: AssignmentDates, period: Period) => {
  // If we have no range, planAssignment is always effective.
  if (!assignment.effectiveAsOf && !assignment.effectiveUntil) return true;
 
  // If we have only a startDate for the planAssignment, planAssignment is effective if
  // the startDate is before the period end.
  if (assignment.effectiveAsOf && !assignment.effectiveUntil) return assignment.effectiveAsOf <= period.endDate;
 
  // If we have both a startDate and an endDate for the planAssignment, planAssignment is effective if
  // the startDate is before the period end and the endDate is after the period start.
  // The check on the effectiveUntil is a dummy check to make sure that the effectiveUntil is after the effectiveAsOf.
  if (assignment.effectiveAsOf && assignment.effectiveUntil)
    return assignment.effectiveAsOf <= period.endDate && assignment.effectiveUntil >= period.startDate;
 
  // If we only have an endDate for the planAssignment, planAssignment is effective if
  // the endDate is after the period start.
  return !!assignment.effectiveUntil && assignment.effectiveUntil >= period.startDate;
};