fix(LOY-119): hiding redeemed rewards

some smaller cleanup on coupon property to avoid optional checks

server/routers/contentstack/reward/utils.ts

@@ -11,6 +11,8 @@ import { notFound } from "@/server/errors/trpc"
 import { generateLoyaltyConfigTag } from "@/utils/generateTag"
 
 import {
+  type ApiReward,
+  type CategorizedApiReward,
   type CmsRewardsResponse,
   type CmsRewardsWithRedeemResponse,
   validateApiAllTiersSchema,
@@ -264,3 +266,20 @@ export async function getCmsRewards(locale: Lang, rewardIds: string[]) {
 
   return validatedCmsRewards.data
 }
+
+export function getNonRedeemedRewardIds(
+  rewards: Array<ApiReward | CategorizedApiReward>
+) {
+  return rewards
+    .filter((reward) => {
+      if ("coupon" in reward && reward.coupon.length > 0) {
+        if (reward.coupon.every((coupon) => coupon.state === "redeemed")) {
+          return false
+        }
+      }
+      return true
+    })
+    .map((reward) => reward?.rewardId)
+    .filter((rewardId): rewardId is string => !!rewardId)
+    .sort()
+}