feat(LOY-154): add expiration date to rewards

apps/scandic-web/utils/rewards.ts

@@ -3,49 +3,74 @@ import {
   REWARD_IDS,
   REWARD_TYPES,
 } from "@/constants/rewards"
+import { dt } from "@/lib/dt"
+
+import type { Dayjs } from "dayjs"
 
 import type {
   RestaurantRewardId,
   RewardId,
   RewardType,
 } from "@/types/components/myPages/rewards"
-import type { RewardWithRedeem } from "@/server/routers/contentstack/reward/output"
+import type {
+  Coupon,
+  RewardWithRedeem,
+} from "@/server/routers/contentstack/reward/output"
 
-export function isValidRewardId(id: string): id is RewardId {
+export {
+  getEarliestExpirationDate,
+  getRewardType,
+  isOnSiteTierReward,
+  isRestaurantOnSiteTierReward,
+  isRestaurantReward,
+  isTierType,
+  isValidRewardId,
+  redeemLocationIsOnSite,
+}
+
+function isValidRewardId(id: string): id is RewardId {
   return Object.values<string>(REWARD_IDS).includes(id)
 }
 
-export function isRestaurantReward(
-  rewardId: string
-): rewardId is RestaurantRewardId {
+function isRestaurantReward(rewardId: string): rewardId is RestaurantRewardId {
   return RESTAURANT_REWARD_IDS.some((id) => id === rewardId)
 }
 
-export function redeemLocationIsOnSite(
+function redeemLocationIsOnSite(
   location: RewardWithRedeem["redeemLocation"]
 ): location is "On-site" {
   return location === "On-site"
 }
 
-export function isTierType(
-  type: RewardWithRedeem["rewardType"]
-): type is "Tier" {
+function isTierType(type: RewardWithRedeem["rewardType"]): type is "Tier" {
   return type === "Tier"
 }
 
-export function isOnSiteTierReward(reward: RewardWithRedeem): boolean {
+function isOnSiteTierReward(reward: RewardWithRedeem): boolean {
   return (
     redeemLocationIsOnSite(reward.redeemLocation) &&
     isTierType(reward.rewardType)
   )
 }
 
-export function isRestaurantOnSiteTierReward(
-  reward: RewardWithRedeem
-): boolean {
+function isRestaurantOnSiteTierReward(reward: RewardWithRedeem): boolean {
   return isOnSiteTierReward(reward) && isRestaurantReward(reward.reward_id)
 }
 
-export function getRewardType(type?: string): RewardType | null {
+function getRewardType(type?: string): RewardType | null {
   return REWARD_TYPES.find((t) => t === type) ?? null
 }
+
+function getEarliestExpirationDate(coupons: Coupon[]) {
+  return coupons
+    .map(({ expiresAt }) => expiresAt)
+    .filter((expiresAt): expiresAt is string => !!expiresAt)
+    .reduce((earliestDate: Dayjs | null, expiresAt) => {
+      const expiresAtDate = dt(expiresAt)
+      if (!earliestDate) {
+        return expiresAtDate
+      }
+
+      return earliestDate.isBefore(expiresAtDate) ? earliestDate : expiresAtDate
+    }, null)
+}