Cryo Explorer Ethereum Mainnet

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface IUniswapV2Router {
    function swapExactETHForTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);

    function swapExactTokensForETH(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapExactTokensForTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);
}

interface IWETH {
    function deposit() external payable;
    function withdraw(uint256) external;
}

interface ISwapRouterV3 {
    struct ExactInputSingleParams {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address recipient;
        uint256 deadline;
        uint256 amountIn;
        uint256 amountOutMinimum;
        uint160 sqrtPriceLimitX96;
    }

    function exactInputSingle(ExactInputSingleParams calldata params) external payable returns (uint256 amountOut);
}

contract TokenLightRouter {
    using SafeERC20 for IERC20;

    address public immutable collector;
    address public immutable usdt;
    address public immutable weth;
    IUniswapV2Router public immutable v2;
    ISwapRouterV3 public immutable v3;

    uint256 public constant FEE_BPS = 100; // 1%
    uint256 public constant BPS_DENOM = 10_000;

    constructor(
        address collector_,
        address usdt_,
        address weth_,
        address v2Router_,
        address v3Router_
    ) {
        collector = collector_;
        usdt = usdt_;
        weth = weth_;
        v2 = IUniswapV2Router(v2Router_);
        v3 = ISwapRouterV3(v3Router_);
    }

    receive() external payable {}

    function _fee(uint256 amount) internal pure returns (uint256) {
        return (amount * FEE_BPS) / BPS_DENOM;
    }

    function swapEthToTokenWithFallback(
        address tokenOut,
        uint256 amountOutMinV3,
        uint256 amountOutMinV2,
        uint24 v3PoolFee,
        address recipient,
        uint256 deadline
    ) external payable {
        require(msg.value > 0, "no ETH");
        require(recipient != address(0), "bad recipient");

        uint256 feeEth = _fee(msg.value);
        uint256 swapEth = msg.value - feeEth;

        // Fee transfer is atomic with the tx; if swap reverts, this reverts too.
        (bool ok,) = collector.call{value: feeEth}("");
        require(ok, "fee send failed");

        // Try V3 first.
        bool v3Ok = false;
        uint256 amountOut = 0;
        if (address(v3) != address(0)) {
            try this._v3SwapExactETHForTokens(tokenOut, swapEth, amountOutMinV3, v3PoolFee, recipient, deadline) returns (uint256 out) {
                v3Ok = true;
                amountOut = out;
            } catch {
                v3Ok = false;
            }
        }

        if (v3Ok) {
            require(amountOut >= amountOutMinV3, "v3 slippage");
            return;
        }

        address[] memory path = new address[](2);
        path[0] = weth;
        path[1] = tokenOut;

        v2.swapExactETHForTokens{value: swapEth}(amountOutMinV2, path, recipient, deadline);
    }

    function _v3SwapExactETHForTokens(
        address tokenOut,
        uint256 amountInEth,
        uint256 amountOutMin,
        uint24 poolFee,
        address recipient,
        uint256 deadline
    ) external returns (uint256 amountOut) {
        require(msg.sender == address(this), "only self");

        IWETH(weth).deposit{value: amountInEth}();
        IERC20(weth).forceApprove(address(v3), amountInEth);

        ISwapRouterV3.ExactInputSingleParams memory params = ISwapRouterV3.ExactInputSingleParams({
            tokenIn: weth,
            tokenOut: tokenOut,
            fee: poolFee,
            recipient: recipient,
            deadline: deadline,
            amountIn: amountInEth,
            amountOutMinimum: amountOutMin,
            sqrtPriceLimitX96: 0
        });

        amountOut = v3.exactInputSingle(params);
    }

    function swapTokenToEthWithFallback(
        address tokenIn,
        uint256 amountIn,
        uint256 amountOutMinV3,
        uint256 amountOutMinV2,
        uint24 v3PoolFee,
        address recipient,
        uint256 deadline
    ) external {
        require(amountIn > 0, "no amount");
        require(recipient != address(0), "bad recipient");

        IERC20(tokenIn).safeTransferFrom(msg.sender, address(this), amountIn);

        // Try V3 first (token -> WETH), receive WETH in this contract.
        bool v3Ok = false;
        uint256 wethOut = 0;
        if (address(v3) != address(0)) {
            try this._v3SwapExactTokensForWeth(tokenIn, amountIn, amountOutMinV3, v3PoolFee, deadline) returns (uint256 out) {
                v3Ok = true;
                wethOut = out;
            } catch {
                v3Ok = false;
            }
        }

        if (!v3Ok) {
            // V2 fallback (token -> ETH)
            IERC20(tokenIn).forceApprove(address(v2), amountIn);
            address[] memory path = new address[](2);
            path[0] = tokenIn;
            path[1] = weth;

            uint256 balBefore = address(this).balance;
            v2.swapExactTokensForETH(amountIn, amountOutMinV2, path, address(this), deadline);
            uint256 balAfter = address(this).balance;
            wethOut = balAfter > balBefore ? (balAfter - balBefore) : 0;
        } else {
            // unwrap WETH we received
            IWETH(weth).withdraw(wethOut);
        }

        require(wethOut > 0, "no ETH out");

        uint256 feeEth = _fee(wethOut);
        uint256 userEth = wethOut - feeEth;

        (bool okFee,) = collector.call{value: feeEth}("");
        require(okFee, "fee send failed");

        (bool okUser,) = payable(recipient).call{value: userEth}("");
        require(okUser, "user send failed");
    }

    function _v3SwapExactTokensForWeth(
        address tokenIn,
        uint256 amountIn,
        uint256 amountOutMin,
        uint24 poolFee,
        uint256 deadline
    ) external returns (uint256 amountOut) {
        require(msg.sender == address(this), "only self");

        IERC20(tokenIn).forceApprove(address(v3), amountIn);

        ISwapRouterV3.ExactInputSingleParams memory params = ISwapRouterV3.ExactInputSingleParams({
            tokenIn: tokenIn,
            tokenOut: weth,
            fee: poolFee,
            recipient: address(this),
            deadline: deadline,
            amountIn: amountIn,
            amountOutMinimum: amountOutMin,
            sqrtPriceLimitX96: 0
        });

        amountOut = v3.exactInputSingle(params);
    }

    function swapUsdtToTokenWithFallback(
        address tokenOut,
        uint256 amountIn,
        uint256 amountOutMinV3,
        uint256 amountOutMinV2,
        uint24 v3PoolFee,
        address recipient,
        uint256 deadline
    ) external {
        require(amountIn > 0, "no amount");
        require(recipient != address(0), "bad recipient");

        IERC20(usdt).safeTransferFrom(msg.sender, address(this), amountIn);

        uint256 feeUsdt = _fee(amountIn);
        uint256 swapUsdt = amountIn - feeUsdt;

        IERC20(usdt).safeTransfer(collector, feeUsdt);

        bool v3Ok = false;
        if (address(v3) != address(0)) {
            try this._v3SwapExactTokensToToken(usdt, tokenOut, swapUsdt, amountOutMinV3, v3PoolFee, recipient, deadline) {
                v3Ok = true;
            } catch {
                v3Ok = false;
            }
        }

        if (v3Ok) return;

        // V2 fallback via WETH
        IERC20(usdt).forceApprove(address(v2), swapUsdt);
        address[] memory path = new address[](3);
        path[0] = usdt;
        path[1] = weth;
        path[2] = tokenOut;

        v2.swapExactTokensForTokens(swapUsdt, amountOutMinV2, path, recipient, deadline);
    }

    function swapTokenToUsdtWithFallback(
        address tokenIn,
        uint256 amountIn,
        uint256 amountOutMinV3,
        uint256 amountOutMinV2,
        uint24 v3PoolFee,
        address recipient,
        uint256 deadline
    ) external {
        require(amountIn > 0, "no amount");
        require(recipient != address(0), "bad recipient");

        IERC20(tokenIn).safeTransferFrom(msg.sender, address(this), amountIn);

        uint256 usdtBalBefore = IERC20(usdt).balanceOf(address(this));
        uint256 usdtOut = 0;
        bool v3Ok = false;
        if (address(v3) != address(0)) {
            try this._v3SwapExactTokensToToken(tokenIn, usdt, amountIn, amountOutMinV3, v3PoolFee, address(this), deadline) {
                v3Ok = true;
            } catch {
                v3Ok = false;
            }
        }

        if (!v3Ok) {
            IERC20(tokenIn).forceApprove(address(v2), amountIn);
            address[] memory path = new address[](3);
            path[0] = tokenIn;
            path[1] = weth;
            path[2] = usdt;

            v2.swapExactTokensForTokens(amountIn, amountOutMinV2, path, address(this), deadline);
        }

        uint256 usdtBalAfter = IERC20(usdt).balanceOf(address(this));
        usdtOut = usdtBalAfter > usdtBalBefore ? (usdtBalAfter - usdtBalBefore) : 0;


        require(usdtOut > 0, "no USDT out");

        uint256 feeUsdt = _fee(usdtOut);
        uint256 userUsdt = usdtOut - feeUsdt;

        IERC20(usdt).safeTransfer(collector, feeUsdt);
        IERC20(usdt).safeTransfer(recipient, userUsdt);
    }

    function _v3SwapExactTokensToToken(
        address tokenIn,
        address tokenOut,
        uint256 amountIn,
        uint256 amountOutMin,
        uint24 poolFee,
        address recipient,
        uint256 deadline
    ) external {
        require(msg.sender == address(this), "only self");

        IERC20(tokenIn).forceApprove(address(v3), amountIn);

        ISwapRouterV3.ExactInputSingleParams memory params = ISwapRouterV3.ExactInputSingleParams({
            tokenIn: tokenIn,
            tokenOut: tokenOut,
            fee: poolFee,
            recipient: recipient,
            deadline: deadline,
            amountIn: amountIn,
            amountOutMinimum: amountOutMin,
            sqrtPriceLimitX96: 0
        });

        v3.exactInputSingle(params);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/IERC20.sol)

pragma solidity >=0.4.16;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the value of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 value) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 value) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC1363} from "../../../interfaces/IERC1363.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC-20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    /**
     * @dev An operation with an ERC-20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Variant of {safeTransfer} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransfer(IERC20 token, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Variant of {safeTransferFrom} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransferFrom(IERC20 token, address from, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     *
     * NOTE: If the token implements ERC-7674, this function will not modify any temporary allowance. This function
     * only sets the "standard" allowance. Any temporary allowance will remain active, in addition to the value being
     * set here.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            safeTransfer(token, to, value);
        } else if (!token.transferAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target
     * has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferFromAndCallRelaxed(
        IERC1363 token,
        address from,
        address to,
        uint256 value,
        bytes memory data
    ) internal {
        if (to.code.length == 0) {
            safeTransferFrom(token, from, to, value);
        } else if (!token.transferFromAndCall(from, to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}.
     * Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall}
     * once without retrying, and relies on the returned value to be true.
     *
     * Reverts if the returned value is other than `true`.
     */
    function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            forceApprove(token, to, value);
        } else if (!token.approveAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturnBool} that reverts if call fails to meet the requirements.
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            let success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            // bubble errors
            if iszero(success) {
                let ptr := mload(0x40)
                returndatacopy(ptr, 0, returndatasize())
                revert(ptr, returndatasize())
            }
            returnSize := returndatasize()
            returnValue := mload(0)
        }

        if (returnSize == 0 ? address(token).code.length == 0 : returnValue != 1) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silently catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        bool success;
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            returnSize := returndatasize()
            returnValue := mload(0)
        }
        return success && (returnSize == 0 ? address(token).code.length > 0 : returnValue == 1);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC1363.sol)

pragma solidity >=0.6.2;

import {IERC20} from "./IERC20.sol";
import {IERC165} from "./IERC165.sol";

/**
 * @title IERC1363
 * @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363].
 *
 * Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract
 * after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction.
 */
interface IERC1363 is IERC20, IERC165 {
    /*
     * Note: the ERC-165 identifier for this interface is 0xb0202a11.
     * 0xb0202a11 ===
     *   bytes4(keccak256('transferAndCall(address,uint256)')) ^
     *   bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256,bytes)'))
     */

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @param data Additional data with no specified format, sent in call to `spender`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC165.sol)

pragma solidity >=0.4.16;

import {IERC165} from "../utils/introspection/IERC165.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC20.sol)

pragma solidity >=0.4.16;

import {IERC20} from "../token/ERC20/IERC20.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (utils/introspection/IERC165.sol)

pragma solidity >=0.4.16;

/**
 * @dev Interface of the ERC-165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[ERC].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}