import { Contract, Provider } from 'ethers';
import { Fee, TradeInput } from '../types';
import { PairsCache } from './pairs_cache';
/**
 * RPC module for fee calculations
 */
export declare class FeeParametersRPC {
    private provider;
    private pairInfosContract;
    private referralContract?;
    private pairsCache;
    constructor(provider: Provider, pairInfosContract: Contract, pairsCache: PairsCache, referralContract?: Contract);
    /**
     * Get margin fee for all pairs (in basis points)
     * @returns Map of pair index to fee
     */
    getMarginFee(): Promise<Map<number, Fee>>;
    /**
     * Get constant spread parameter for each pair
     * @returns Map of pair index to constant spread
     */
    constantSpreadParameter(): Promise<Map<number, number>>;
    /**
     * Get opening fee for a position
     * @param positionSize - Position size in USDC
     * @param isLong - True for long, false for short
     * @param pairIndex - Pair index
     * @returns Opening fee in USDC
     */
    getOpeningFee(positionSize: number, isLong: boolean, pairIndex: number): Promise<number>;
    /**
     * Get opening fee for a new trade with referral
     * @param tradeInput - Trade input parameters
     * @param referrer - Referrer address (optional)
     * @returns Opening fee in USDC
     */
    getNewTradeOpeningFee(tradeInput: TradeInput, referrer?: string): Promise<number>;
    /**
     * Get trade referral rebate
     * @param trader - Trader address
     * @param referrer - Referrer address
     * @param openingFee - Opening fee amount
     * @returns Rebate amount
     */
    getTradeReferralRebate(trader: string, referrer: string, openingFee: number): Promise<number>;
}