refactor: currencies service.

refactor: exchange rates service.

server/src/interfaces/ExchangeRate.ts

@@ -0,0 +1,32 @@
+
+export interface IExchangeRate {
+  id: number,
+  currencyCode: string,
+  exchangeRate: number,
+  date: Date,
+  createdAt: Date,
+  updatedAt: Date,
+};
+
+export interface IExchangeRateDTO {
+  currencyCode: string,
+  exchangeRate: number,
+  date: Date,
+};
+
+export interface IExchangeRateEditDTO {
+  exchangeRate: number,
+};
+
+export interface IExchangeRateFilter {
+  page: number,
+  pageSize: number,
+};
+
+export interface IExchangeRatesService {
+  newExchangeRate(tenantId: number, exchangeRateDTO: IExchangeRateDTO): Promise<IExchangeRate>;
+  editExchangeRate(tenantId: number, exchangeRateId: number, editExRateDTO: IExchangeRateEditDTO): Promise<void>;
+
+  deleteExchangeRate(tenantId: number, exchangeRateId: number): Promise<void>;
+  listExchangeRates(tenantId: number, exchangeRateFilter: IExchangeRateFilter): Promise<void>;
+};