createReimbursement.js

async function createFreeTrialReimbursements(studentIds, courseId, userId) {
  return Promise.all(studentIds.map(async (studentId) => {
    const purchaseHistory = await courseApi.getPurchasesForAStudentInACourse(studentId, courseId);
    // no purchases
    if (purchaseHistory.length === 0)
      return
    // we already have a paid purchase
    if (purchaseHistory.filter(p => p.price > 0).length !== 0)
      return
    // we dont have a paid purchase
    if (purchaseHistory.filter(p => p.numHours === -1 && p.price === 0).length === 0 && purchaseHistory.filter(p => p.numHours === 1 && p.price === 0).length !== 0)
      return courseApi.createPurchase({
        pkgId: 'FREE_TRIAL_REIMBURSEMENT',
        userId,
        studentIds: [studentId],
        price: 0, 
        numHours: -1
      });
  }));
}