import { DateTime } from "@arkecosystem/platform-sdk-intl";
import { NumberLike } from "@arkecosystem/platform-sdk-support";
import { IProfile } from "./contracts";
/**
 * Defines the implementation contract for the exchange rate service.
 *
 * @export
 * @interface IExchangeRateService
 */
export interface IExchangeRateService {
    /**
     * Synchronise the exchange rates for all wallets.
     *
     * @param {IProfile} profile
     * @param {string} currency
     * @return {Promise<void>}
     * @memberof IExchangeRateService
     */
    syncAll(profile: IProfile, currency: string): Promise<void>;
    /**
     * Exchange the source currency to the target currency for the given date.
     *
     * @param {string} currency
     * @param {string} exchangeCurrency
     * @param {DateTime} date
     * @param {NumberLike} value
     * @return {number}
     * @memberof IExchangeRateService
     */
    exchange(currency: string, exchangeCurrency: string, date: DateTime, value: NumberLike): number;
    /**
     * Take a snapshot of the current data.
     *
     * @return {Promise<void>}
     * @memberof IExchangeRateService
     */
    snapshot(): Promise<void>;
    /**
     * Restore data from a snapshot.
     *
     * @return {Promise<void>}
     * @memberof IExchangeRateService
     */
    restore(): Promise<void>;
}