import { ethers, TransactionLike } from "ethers";
/**
 * Calculate the amount to repay based on whether approval is required and gas price
 * @param approveRequired Whether approval transaction is required
 * @param gasPrice Gas price in gkei (default: 25gkei)
 * @returns The amount to repay
 */
export declare function getAmountRepay(approveRequired: boolean, gasPrice?: number): string;
/**
 * Get the gasless swap router for the specified chain
 * @param provider The ethers provider
 * @param chainId The chain ID
 * @param address Override the address of the gasless swap router (optional)
 * @returns The gasless swap router contract
 */
export declare function getGaslessSwapRouter(provider: ethers.Provider, chainId: number, address?: string): Promise<any>;
/**
 * Get the commission rate for the specified gasless swap router
 * @param gsr The gasless swap router contract
 * @returns The commission rate
 */
export declare function getCommissionRate(gsr: ethers.Contract): Promise<number>;
/**
 * Calculate the minimum amount out based on amount to repay, app transaction fee, and commission rate
 * @param amountRepay The amount to repay
 * @param appTxFee The application transaction fee
 * @param commissionRateBasisPoints The commission rate in basis points (e.g., 1000 = 10%)
 * @returns The minimum amount out
 */
export declare function getMinAmountOut(amountRepay: string, appTxFee: string, commissionRateBasisPoints: number): string;
/**
 * Calculate the amount in based on minimum amount out and slippage
 * @param gsr The gasless swap router contract
 * @param token The token address
 * @param minAmountOut The minimum amount out
 * @param slippageBasisPoints The slippage basis point (e.g., 50 basis points = 0.5%)
 * @returns The amount in
 */
export declare function getAmountIn(gsr: ethers.Contract, token: string, minAmountOut: string, slippageBasisPoints: number): Promise<string>;
/**
 * Generate a approve transaction
 * @param provider The ethers provider
 * @param fromAddress The sender address
 * @param tokenAddr The token address
 * @param routerAddress The router address
 * @param amount The amount to approve
 * @returns The approve transaction
 */
export declare function getApproveTx(provider: ethers.Provider, fromAddress: string, tokenAddr: string, routerAddress: string): Promise<ethers.TransactionRequest>;
/**
 * Generate an swap transaction
 * @param provider The ethers provider
 * @param fromAddress The sender address
 * @param tokenAddr The token address to swap
 * @param amountIn The amount to swap
 * @param minAmountOut The minimum amount out
 * @param amountRepay The amount to repay
 * @param isSingle Whether this is a single transaction (default: true)
 * @param deadline The deadline in seconds (default: 1800)
 * @returns The swap transaction
 */
export declare function getSwapTx(provider: ethers.Provider, fromAddress: string, tokenAddr: string, amountIn: string, minAmountOut: string, amountRepay: string, isSingle?: boolean, deadline?: number): Promise<ethers.TransactionRequest>;
/**
 * Send gasless transactions
 * @param approveTxOrNull The approve transaction or null if not needed
 * @param swapTx The swap transaction
 * @param provider Optional provider to use for sending transactions
 * @returns Array of transaction hashes
 */
export declare function sendGaslessTx(approveTxOrNull: string | null, swapTx: string, provider: ethers.Provider): Promise<string[]>;
/**
 * Check if a token is supported for gasless transactions
 * @param signer The ethers signer
 * @param token The token address
 * @param chainId The chain ID
 * @returns True if the token is supported, false otherwise
 */
export declare function isGaslessSupportedToken(provider: ethers.Provider, token: string, chainId: number): Promise<boolean>;
/**
 * Check if a transaction is a gasless approve transaction
 * @param provider The ethers provider
 * @param tx The transaction
 * @param chainId The chain ID
 * @returns True if the transaction is a gasless approve transaction, false otherwise
 */
export declare function isGaslessApprove(provider: ethers.Provider, tx: string | any, chainId: number): Promise<boolean>;
export declare function isValidSwapTxFormat(txRequest: TransactionLike<string>): boolean;
export declare function isValidRouterAddress(provider: ethers.Provider, txRequest: TransactionLike<string>, chainId: number): Promise<boolean>;
export declare function validateAndDecodeSwapFunction(data: string): {
    isValid: boolean;
    decodedParams?: {
        tokenData: string;
        amountInData: string;
        amountRepayData: string;
    };
};
export declare function validateApproveToken(approveTxRequest: TransactionLike<string>, tokenData: string): boolean;
export declare function validateApproveAmount(approveTxRequest: TransactionLike<string>, amountInData: string): boolean;
export declare function validateNonceWithApprove(provider: ethers.Provider, approveTxRequest: TransactionLike<string>, swapTxRequest: TransactionLike<string>): Promise<boolean>;
export declare function validateAmountRepayWithApprove(swapTxRequest: TransactionLike<string>, amountRepayData: string): boolean;
export declare function validateNonceWithoutApprove(provider: ethers.Provider, swapTxRequest: TransactionLike<string>): Promise<boolean>;
export declare function validateAmountRepayWithoutApprove(swapTxRequest: TransactionLike<string>, amountRepayData: string): boolean;
export declare function validateWithApprove(provider: ethers.Provider, approveTx: string | any, swapTxRequest: TransactionLike<string>, tokenData: string, amountInData: string, amountRepayData: string, chainId: number): Promise<boolean>;
export declare function validateWithoutApprove(provider: ethers.Provider, swapTxRequest: TransactionLike<string>, amountRepayData: string): Promise<boolean>;
/**
 * Check if transactions form a valid gasless swap
 * @param approveTxOrNull The approve transaction or null if not needed
 * @param swapTx The swap transaction
 * @param chainId The chain ID
 * @param provider The ethers provider
 * @returns True if the transactions form a valid gasless swap, false otherwise
 */
export declare function isGaslessSwap(provider: ethers.Provider, approveTxOrNull: string | any | null, swapTx: string | any, chainId: number): Promise<boolean>;