import { FeeCodeDefinition, FeeThresholdUses } from "@gala-chain/api";
import BigNumber from "bignumber.js";
import { GalaChainContext } from "../types";
export interface GalaFeeGateParams {
    feeCode: string;
    activeUser?: string | undefined;
    additionalFee?: BigNumber | undefined;
}
/**
 * A standardized, pre-defined Fee Gate designed to work with `FeeUsageThreshold`,
 * `FeeCodeDefinition`, and `FeeCodeDefintion.FeeAccelerationRateType` schemes to
 * increase fees for heavy, abusive, or denial-of-service level usage by individual
 * identities. Fees will increase by the defined acceleration rate as users hit
 * increasingly high usage thresholds defined by authoritative channel operators.
 *
 * @param ctx
 * @param data
 * @returns
 */
export declare function galaFeeGate(ctx: GalaChainContext, data: GalaFeeGateParams): Promise<void>;
export interface FeeAmountAndUses {
    feeAmount: BigNumber;
    feeCodeDefinitions: FeeCodeDefinition[];
    cumulativeUses: BigNumber;
}
export declare function writeUsageAndCalculateFeeAmount(ctx: GalaChainContext, data: GalaFeeGateParams): Promise<FeeAmountAndUses>;
export interface cumulativeUsesAndFeeAmount {
    feeAmount: BigNumber;
    cumulativeUses: BigNumber;
}
export declare function incrementCumulativeUsesAndCalculateFee(feeCodeDefinitions: FeeCodeDefinition[], userFeeThresholdUses: FeeThresholdUses): cumulativeUsesAndFeeAmount;
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