refactor(LOY-62): implement code review feedback

components/Blocks/DynamicContent/Rewards/ScriptedRewardText/index.tsx

@@ -1,23 +1,13 @@
 import { useIntl } from "react-intl"
 
-import {
-  isMembershipLevel,
-  MembershipLevelEnum,
-} from "@/constants/membershipLevels"
+import { TIER_TO_FRIEND_MAP } from "@/constants/membershipLevels"
 
 import BiroScript from "@/components/TempDesignSystem/Text/BiroScript"
+import { isMembershipLevel } from "@/utils/membershipLevels"
+import { isCouponRewardType } from "@/utils/rewards"
 
 import type { ScriptedRewardTextProps } from "@/types/components/myPages/myPage/accountPage"
-
-const TIER_TO_FRIEND_MAP: Record<MembershipLevelEnum, string> = {
-  [MembershipLevelEnum.L1]: "New Friend",
-  [MembershipLevelEnum.L2]: "Good Friend",
-  [MembershipLevelEnum.L3]: "Close Friend",
-  [MembershipLevelEnum.L4]: "Dear Friend",
-  [MembershipLevelEnum.L5]: "Loyal Friend",
-  [MembershipLevelEnum.L6]: "True Friend",
-  [MembershipLevelEnum.L7]: "Best Friend",
-}
+import type { CouponRewardType } from "@/types/components/myPages/rewards"
 
 export default function ScriptedRewardText({
   rewardType,
@@ -25,31 +15,21 @@ export default function ScriptedRewardText({
 }: ScriptedRewardTextProps) {
   const intl = useIntl()
 
-  let label: string | null = null
-
-  switch (rewardType) {
-    case "Tier":
-      if (rewardTierLevel && isMembershipLevel(rewardTierLevel)) {
-        label = TIER_TO_FRIEND_MAP[rewardTierLevel]
-      }
-      break
-
-    case "Campaign":
-      label = intl.formatMessage({ id: "Campaign" })
-      break
-
-    case "Surprise":
-      label = intl.formatMessage({ id: "Surprise!" })
-      break
-
-    case "Member-voucher":
-      label = intl.formatMessage({ id: "Voucher" })
-      break
-
-    default:
-      label = null
+  const couponLabelMap: Record<CouponRewardType, string> = {
+    Campaign: intl.formatMessage({ id: "Campaign" }),
+    Surprise: intl.formatMessage({ id: "Surprise!" }),
+    "Member-voucher": intl.formatMessage({ id: "Voucher" }),
   }
 
+  const label =
+    rewardTierLevel && isMembershipLevel(rewardTierLevel)
+      ? TIER_TO_FRIEND_MAP[rewardTierLevel]
+      : isCouponRewardType(rewardType)
+        ? couponLabelMap[rewardType]
+        : null
+
+  if (!label) return null
+
   return (
     <BiroScript type="two" color="red" tilted="small">
       {label}