import { Codec } from '@polkadot/types/types';
import { Fixed18 } from './fixed-18';
/**
 * @name calcCommunalBonded
 * @description bonded token balance belong to the liqiud token holders
 */
export declare const calcCommunalBonded: (totalBonded: Fixed18, nextEraClaimedUnbonded: Fixed18) => Fixed18;
/**
 * @name calcCommunalTotal
 * @description total bonded token balance (includ bonded, free(unbonded), unbonding)
 */
export declare const calcCommunalTotal: (communalBonded: Fixed18, communalFree: Fixed18, unbondingToFree: Fixed18) => Fixed18;
/**
 * @name calcCommunalBondedRatio
 * @param {Fixed18} communalBonded - bonded token balance belone to the liqiud token holders
 * @param {Fixed18} commuanlTotal - total Bonded token balance (includ Bonded, free(Unbonded), unbonding)
 */
export declare const calcCommunalBondedRatio: (communalBonded: Fixed18, commuanlTotal: Fixed18) => Fixed18;
/**
 * @name calcLiquidExchangeRate
 * @description calculate liquid exhchange rate
 * @param {Fixed18} liquidTokenIssuance - liquid token issuance
 * @param {Fixed18} commuanlTotal - total brnded token balance (includ bonded, free(unbonded), unbonding)
 * @param {Fixed18} defaultExchangeRate - default exchange rate
 */
export declare const calcLiquidExchangeRate: (liquidTokenIssuance: Fixed18, commuanlTotal: Fixed18, defaultExchangeRate: Fixed18) => Fixed18;
/**
 * @name calcClaimFeeRatio
 * @description calculate claim fee ratio
 * @param {Fixed18} maxClaimFee - max claim fee
 * @param {number} targetEra - target era
 * @param {number} bondingDuration - bonding duration era
 */
export declare const calcClaimFeeRatio: (targetEra: number, currentEra: number, maxClaimFee: Fixed18, bondingDuration: number) => Fixed18;
/**
 * @name calcClaimFee
 * @description calculate claim fee
 * @param {Fixed18} amount - claim amount
 * @param {Fixed18} maxClaimFee - max claim fee
 * @param {number} targetEra - target era
 * @param {number} bondingDuration - bonding duration era
 */
export declare const calcClaimFee: (amount: Fixed18, targetEra: number, currentEra: number, maxClaimFee: Fixed18, bondingDuration: number) => Fixed18;
interface StakingPoolParams {
    totalBonded: Fixed18 | Codec;
    communalFree: Fixed18 | Codec;
    unbondingToFree: Fixed18 | Codec;
    nextEraClaimedUnbonded: Fixed18 | Codec;
    liquidTokenIssuance: Fixed18 | Codec;
    defaultExchangeRate: Fixed18 | Codec;
    maxClaimFee: Fixed18 | Codec;
    bondingDuration: number | Codec;
    currentEra: number | Codec;
}
/**
 * @class StakingPoolHelper
 * @classdesc support more structured api, include staking pool properties and derived properties
 */
export declare class StakingPoolHelper {
    totalBonded: Fixed18;
    communalFree: Fixed18;
    unbondingToFree: Fixed18;
    nextEraClaimedUnbonded: Fixed18;
    liquidTokenIssuance: Fixed18;
    defaultExchangeRate: Fixed18;
    maxClaimFee: Fixed18;
    bondingDuration: number;
    currentEra: number;
    constructor(params: StakingPoolParams);
    get communalBonded(): Fixed18;
    get communalTotal(): Fixed18;
    get communalBondedRatio(): Fixed18;
    get liquidExchangeRate(): Fixed18;
    convertToLiquid(amount: Fixed18): Fixed18;
    claimFeeRatio(era: number): Fixed18;
    claimFee(amount: Fixed18, era: number): Fixed18;
}
export {};