// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.28;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

pragma abicoder v2;

interface ISwapExecutor {
    /**
     * @notice Performs a swap on a liquidity pool.
     * @dev This method can either take the amount of the input token or the amount
     * of the output token that we would like to swap. If called with the amount of
     * the  input token, the amount of the output token will be returned, and vice
     * versa. Whether it is the input or output that is given, is encoded in the data
     * parameter.
     *
     * Note Part of the informal interface is that the executor supports sending the received
     *  tokens to a receiver address. If the underlying smart contract does not provide this
     *  functionality consider adding an additional transfer in the implementation.
     *
     *  This function is marked as `payable` to accommodate delegatecalls, which can forward
     *  a potential `msg.value` to it.
     *
     * @param givenAmount The amount of either the input token or output token to swap.
     * @param data Data that holds information necessary to perform the swap.
     * @return calculatedAmount The amount of either the input token or output token
     * swapped, depending on the givenAmount inputted.
     */
    function swap(uint256 givenAmount, bytes calldata data)
        external
        payable
        returns (uint256 calculatedAmount);
}

interface ISwapExecutorErrors {
    error InvalidParameterLength(uint256);
    error UnknownCurveType(uint8);
}