feat(payment): sync plans and add coins rules

src/data/storage/payment/payment_plans_storage.ts

@@ -0,0 +1,32 @@
+"use client";
+
+import {
+  PaymentPlansResponseSchema,
+  type PaymentPlansResponseData,
+} from "@/data/schemas/payment";
+import { type Result as ResultT, SpAsyncUtil } from "@/utils";
+
+import { StorageKeys } from "../storage_keys";
+
+export class PaymentPlansStorage {
+  private constructor() {}
+
+  static getPlans(): Promise<ResultT<PaymentPlansResponseData | null>> {
+    return SpAsyncUtil.getJson(
+      StorageKeys.paymentPlans,
+      PaymentPlansResponseSchema,
+    );
+  }
+
+  static setPlans(plans: PaymentPlansResponseData): Promise<ResultT<void>> {
+    return SpAsyncUtil.setJson(
+      StorageKeys.paymentPlans,
+      plans,
+      PaymentPlansResponseSchema,
+    );
+  }
+
+  static clearPlans(): Promise<ResultT<void>> {
+    return SpAsyncUtil.remove(StorageKeys.paymentPlans);
+  }
+}