Forkchoice Ethereum Mainnet

// SPDX-License-Identifier: MIT
pragma solidity 0.8.30;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {ReentrancyGuard} from "src/util/ReentrancyGuard.sol";
import {IGenesis} from "src/interfaces/IGenesis.sol";

/// @notice Interface for the diamond contract's depositToFxSave function
interface IFxUSDDiamondV2 {
    struct ConvertInParams {
        address tokenIn;
        uint256 amount;
        address target;
        bytes data;
        uint256 minOut;
        bytes signature;
    }
    function depositToFxSave(
        ConvertInParams memory params,
        address tokenOut,
        uint256 minShares,
        address receiver
    ) external payable;
}

/// @title GenesisUSDCZapV2 - Production Ready
/// @notice One-click zapper for depositing USDC or fxUSD into Genesis contracts via fxSAVE
/// @dev Enables users to deposit USDC or fxUSD in a single transaction
/// @dev Flow: USDC/fxUSD → fxSAVE → Genesis deposit
/// @author Harbor Yield Protocol
contract GenesisUSDCZapV2 is ReentrancyGuard {
    using SafeERC20 for IERC20;

    // ============ Constants ============
    /// @notice USDC address (mainnet)
    address public constant USDC = 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48;
    /// @notice fxUSD token address (mainnet)
    address public constant FXUSD = 0x085780639CC2cACd35E474e71f4d000e2405d8f6;
    /// @notice fxSAVE vault address (mainnet)
    address public constant FXSAVE = 0x7743e50F534a7f9F1791DdE7dCD89F7783Eefc39;
    /// @notice fxUSD Diamond contract address (handles deposits to fxSAVE)
    address public constant FXUSD_DIAMOND = 0x33636D49FbefBE798e15e7F356E8DBef543CC708;
    /// @notice fxUSD swap router/converter address (for USDC and fxUSD deposits)
    address public constant FXUSD_SWAP_ROUTER = 0x12AF4529129303D7FbD2563E242C4a2890525912;

    // Selector for IFxProtocolRouter.convert(address,uint256,uint256,bytes)
    bytes4 private constant CONVERT_SELECTOR = 0xed52d54c;

    // ============ Immutables ============
    /// @notice Genesis contract address
    address public immutable GENESIS;

    // ============ Configurable ============
    address public owner;

    // ============ Events ============
    /// @notice Emitted when USDC is zapped into Genesis
    /// @param user Address that initiated the zap
    /// @param genesis Address of the Genesis contract
    /// @param receiver Address that will receive the Genesis shares
    /// @param usdcAmount Amount of USDC deposited
    /// @param fxSaveAmount Amount of fxSAVE received
    /// @param collateralAmount Amount of collateral deposited to Genesis
    event USDCZappedToGenesis(
        address indexed user,
        address indexed genesis,
        address indexed receiver,
        uint256 usdcAmount,
        uint256 fxSaveAmount,
        uint256 collateralAmount
    );

    /// @notice Emitted when fxUSD is zapped into Genesis
    /// @param user Address that initiated the zap
    /// @param genesis Address of the Genesis contract
    /// @param receiver Address that will receive the Genesis shares
    /// @param fxUsdAmount Amount of fxUSD deposited
    /// @param fxSaveAmount Amount of fxSAVE received
    /// @param collateralAmount Amount of collateral deposited to Genesis
    event FXUSDZappedToGenesis(
        address indexed user,
        address indexed genesis,
        address indexed receiver,
        uint256 fxUsdAmount,
        uint256 fxSaveAmount,
        uint256 collateralAmount
    );

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    // ============ Errors ============
    /// @notice Thrown when zero amount is provided
    error ZeroAmount();
    /// @notice Thrown when contract addresses are invalid
    error InvalidAddress();
    /// @notice Thrown when fxSAVE address doesn't match Genesis collateral token
    error CollateralMismatch(address expected, address actual);
    error Unauthorized();
    error SlippageExceeded();
    error DepositFailed();
    error FunctionNotFound();

    // ============ Constructor ============
    /// @notice Constructor sets the Genesis address
    /// @param genesis_ Address of the Genesis contract (must accept fxSAVE as collateral)
    constructor(address genesis_) {
        if (genesis_ == address(0)) revert InvalidAddress();

        address expected = IGenesis(genesis_).WRAPPED_COLLATERAL_TOKEN();
        if (expected != FXSAVE) revert CollateralMismatch(expected, FXSAVE);

        GENESIS = genesis_;
        owner = msg.sender;
        emit OwnershipTransferred(address(0), msg.sender);
    }

    modifier onlyOwner() {
        _onlyOwner();
        _;
    }

    function _onlyOwner() internal view {
        if (msg.sender != owner) revert Unauthorized();
    }

    // =============================================================
    // MAIN ZAP FUNCTIONS
    // =============================================================

    /// @notice Zap USDC → fxSAVE → Genesis in one tx
    /// @dev Flow: USDC → fxSAVE → Genesis deposit
    /// @param usdcAmount Amount of USDC to zap
    /// @param minFxSaveOut Minimum fxSAVE to receive (slippage protection)
    /// @param receiver Who gets the Genesis shares
    /// @return collateralAmount Amount of collateral deposited to Genesis
    function zapUsdcToGenesis(
        uint256 usdcAmount,
        uint256 minFxSaveOut,
        address receiver
    ) external nonReentrant returns (uint256 collateralAmount) {
        if (usdcAmount == 0) revert ZeroAmount();
        if (receiver == address(0)) revert InvalidAddress();

        // 1. Pull USDC
        IERC20(USDC).safeTransferFrom(msg.sender, address(this), usdcAmount);

        // 2. Convert USDC → fxSAVE via diamond
        uint256 fxSaveReceived = _convertToFxSave(USDC, usdcAmount, minFxSaveOut);

        // 3. Deposit into Genesis
        uint256 sharesBefore = IGenesis(GENESIS).balanceOf(receiver);
        IERC20(FXSAVE).forceApprove(GENESIS, fxSaveReceived);
        IGenesis(GENESIS).deposit(fxSaveReceived, receiver);
        
        // Validate that shares were actually minted
        uint256 sharesAfter = IGenesis(GENESIS).balanceOf(receiver);
        uint256 sharesReceived = sharesAfter - sharesBefore;
        if (sharesReceived != fxSaveReceived) {
            revert DepositFailed();
        }

        collateralAmount = fxSaveReceived;

        emit USDCZappedToGenesis(msg.sender, GENESIS, receiver, usdcAmount, fxSaveReceived, collateralAmount);

        // Clean approvals
        _safeApprove(IERC20(USDC), FXUSD_DIAMOND, 0);
        _safeApprove(IERC20(FXSAVE), GENESIS, 0);
    }

    /// @notice Zap fxUSD → fxSAVE → Genesis in one tx
    /// @dev Flow: fxUSD → fxSAVE → Genesis deposit
    /// @param fxUsdAmount Amount of fxUSD to zap
    /// @param minFxSaveOut Minimum fxSAVE to receive
    /// @param receiver Who gets the Genesis shares
    /// @return collateralAmount Amount of collateral deposited to Genesis
    function zapFxUsdToGenesis(
        uint256 fxUsdAmount,
        uint256 minFxSaveOut,
        address receiver
    ) external nonReentrant returns (uint256 collateralAmount) {
        if (fxUsdAmount == 0) revert ZeroAmount();
        if (receiver == address(0)) revert InvalidAddress();

        // 1. Pull fxUSD
        IERC20(FXUSD).safeTransferFrom(msg.sender, address(this), fxUsdAmount);

        // 2. Convert fxUSD → fxSAVE
        uint256 fxSaveReceived = _convertToFxSave(FXUSD, fxUsdAmount, minFxSaveOut);

        // 3. Deposit into Genesis
        uint256 sharesBefore = IGenesis(GENESIS).balanceOf(receiver);
        IERC20(FXSAVE).forceApprove(GENESIS, fxSaveReceived);
        IGenesis(GENESIS).deposit(fxSaveReceived, receiver);
        
        // Validate that shares were actually minted
        uint256 sharesAfter = IGenesis(GENESIS).balanceOf(receiver);
        uint256 sharesReceived = sharesAfter - sharesBefore;
        if (sharesReceived != fxSaveReceived) {
            revert DepositFailed();
        }

        collateralAmount = fxSaveReceived;

        emit FXUSDZappedToGenesis(msg.sender, GENESIS, receiver, fxUsdAmount, fxSaveReceived, collateralAmount);

        // Clean approvals
        _safeApprove(IERC20(FXUSD), FXUSD_DIAMOND, 0);
        _safeApprove(IERC20(FXSAVE), GENESIS, 0);
    }

    // =============================================================
    // INTERNAL HELPERS
    // =============================================================

    function _convertToFxSave(
        address tokenIn,
        uint256 amountIn,
        uint256 minOut
    ) internal returns (uint256 fxSaveReceived) {
        IERC20 token = IERC20(tokenIn);

        // Approve diamond if needed
        _safeApprove(token, FXUSD_DIAMOND, amountIn);

        // Encode converter call: convert(tokenIn, amountIn, 0, "")
        bytes memory data = abi.encodeWithSelector(
            CONVERT_SELECTOR,
            tokenIn,
            amountIn,
            uint256(0),
            bytes("")
        );

        IFxUSDDiamondV2.ConvertInParams memory params = IFxUSDDiamondV2.ConvertInParams({
            tokenIn: tokenIn,
            amount: amountIn,
            target: FXUSD_SWAP_ROUTER,
            data: data,
            minOut: minOut,
            signature: ""
        });

        uint256 balanceBefore = IERC20(FXSAVE).balanceOf(address(this));
        IFxUSDDiamondV2(FXUSD_DIAMOND).depositToFxSave(params, tokenIn, 0, address(this));
        fxSaveReceived = IERC20(FXSAVE).balanceOf(address(this)) - balanceBefore;

        if (fxSaveReceived < minOut) revert SlippageExceeded();
    }

    function _safeApprove(IERC20 token, address spender, uint256 amount) internal {
        uint256 current = token.allowance(address(this), spender);
        if (current > 0) {
            token.forceApprove(spender, 0);
        }
        token.forceApprove(spender, amount);
    }

    // =============================================================
    // OWNER FUNCTIONS
    // =============================================================

    function transferOwnership(address newOwner) external onlyOwner {
        if (newOwner == address(0)) revert InvalidAddress();
        emit OwnershipTransferred(owner, newOwner);
        owner = newOwner;
    }

    // forge-lint: disable-next-line(mixed-case-function)
    function rescueETH() external onlyOwner {
        payable(owner).transfer(address(this).balance);
    }

    function rescueToken(address token) external onlyOwner {
        IERC20(token).safeTransfer(owner, IERC20(token).balanceOf(address(this)));
    }

    // =============================================================
    // FALLBACKS
    // =============================================================

    receive() external payable {}
    fallback() external payable { revert FunctionNotFound(); }
}

// 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 v5.5.0) (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 {
        if (!_safeTransfer(token, to, value, true)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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 {
        if (!_safeTransferFrom(token, from, to, value, true)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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 _safeTransfer(token, to, value, false);
    }

    /**
     * @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 _safeTransferFrom(token, from, to, value, false);
    }

    /**
     * @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 {
        if (!_safeApprove(token, spender, value, false)) {
            if (!_safeApprove(token, spender, 0, true)) revert SafeERC20FailedOperation(address(token));
            if (!_safeApprove(token, spender, value, true)) revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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 relies 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 relies 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}.
     * Oppositely, 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 `token.transfer(to, value)` call, 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 to The recipient of the tokens
     * @param value The amount of token to transfer
     * @param bubble Behavior switch if the transfer call reverts: bubble the revert reason or return a false boolean.
     */
    function _safeTransfer(IERC20 token, address to, uint256 value, bool bubble) private returns (bool success) {
        bytes4 selector = IERC20.transfer.selector;

        assembly ("memory-safe") {
            let fmp := mload(0x40)
            mstore(0x00, selector)
            mstore(0x04, and(to, shr(96, not(0))))
            mstore(0x24, value)
            success := call(gas(), token, 0, 0x00, 0x44, 0x00, 0x20)
            // if call success and return is true, all is good.
            // otherwise (not success or return is not true), we need to perform further checks
            if iszero(and(success, eq(mload(0x00), 1))) {
                // if the call was a failure and bubble is enabled, bubble the error
                if and(iszero(success), bubble) {
                    returndatacopy(fmp, 0x00, returndatasize())
                    revert(fmp, returndatasize())
                }
                // if the return value is not true, then the call is only successful if:
                // - the token address has code
                // - the returndata is empty
                success := and(success, and(iszero(returndatasize()), gt(extcodesize(token), 0)))
            }
            mstore(0x40, fmp)
        }
    }

    /**
     * @dev Imitates a Solidity `token.transferFrom(from, to, value)` call, 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 from The sender of the tokens
     * @param to The recipient of the tokens
     * @param value The amount of token to transfer
     * @param bubble Behavior switch if the transfer call reverts: bubble the revert reason or return a false boolean.
     */
    function _safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value,
        bool bubble
    ) private returns (bool success) {
        bytes4 selector = IERC20.transferFrom.selector;

        assembly ("memory-safe") {
            let fmp := mload(0x40)
            mstore(0x00, selector)
            mstore(0x04, and(from, shr(96, not(0))))
            mstore(0x24, and(to, shr(96, not(0))))
            mstore(0x44, value)
            success := call(gas(), token, 0, 0x00, 0x64, 0x00, 0x20)
            // if call success and return is true, all is good.
            // otherwise (not success or return is not true), we need to perform further checks
            if iszero(and(success, eq(mload(0x00), 1))) {
                // if the call was a failure and bubble is enabled, bubble the error
                if and(iszero(success), bubble) {
                    returndatacopy(fmp, 0x00, returndatasize())
                    revert(fmp, returndatasize())
                }
                // if the return value is not true, then the call is only successful if:
                // - the token address has code
                // - the returndata is empty
                success := and(success, and(iszero(returndatasize()), gt(extcodesize(token), 0)))
            }
            mstore(0x40, fmp)
            mstore(0x60, 0)
        }
    }

    /**
     * @dev Imitates a Solidity `token.approve(spender, value)` call, 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 spender The spender of the tokens
     * @param value The amount of token to transfer
     * @param bubble Behavior switch if the transfer call reverts: bubble the revert reason or return a false boolean.
     */
    function _safeApprove(IERC20 token, address spender, uint256 value, bool bubble) private returns (bool success) {
        bytes4 selector = IERC20.approve.selector;

        assembly ("memory-safe") {
            let fmp := mload(0x40)
            mstore(0x00, selector)
            mstore(0x04, and(spender, shr(96, not(0))))
            mstore(0x24, value)
            success := call(gas(), token, 0, 0x00, 0x44, 0x00, 0x20)
            // if call success and return is true, all is good.
            // otherwise (not success or return is not true), we need to perform further checks
            if iszero(and(success, eq(mload(0x00), 1))) {
                // if the call was a failure and bubble is enabled, bubble the error
                if and(iszero(success), bubble) {
                    returndatacopy(fmp, 0x00, returndatasize())
                    revert(fmp, returndatasize())
                }
                // if the return value is not true, then the call is only successful if:
                // - the token address has code
                // - the returndata is empty
                success := and(success, and(iszero(returndatasize()), gt(extcodesize(token), 0)))
            }
            mstore(0x40, fmp)
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.5.0) (utils/ReentrancyGuard.sol)

pragma solidity 0.8.30;

import {StorageSlot} from "src/util/StorageSlot.sol";

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * IMPORTANT: This storage-based reentrancy guard is marked as deprecated in OpenZeppelin v5.x,
 * but is kept here locally to support non-upgradeable contracts until the transient variant
 * becomes universally available.
 */
abstract contract ReentrancyGuard {
    using StorageSlot for bytes32;

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.ReentrancyGuard")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant _REENTRANCY_GUARD_STORAGE =
        0x9b779b17422d0df92223018b32b4d1fa46e071723d6817e2486d003becc55f00;

    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    constructor() {
        _reentrancyGuardStorageSlot().getUint256Slot().value = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        if (_reentrancyGuardEntered()) {
            revert ReentrancyGuardReentrantCall();
        }

        _reentrancyGuardStorageSlot().getUint256Slot().value = _ENTERED;
    }

    function _nonReentrantAfter() private {
        _reentrancyGuardStorageSlot().getUint256Slot().value = _NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered".
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _reentrancyGuardStorageSlot().getUint256Slot().value == _ENTERED;
    }

    function _reentrancyGuardStorageSlot() internal pure returns (bytes32) {
        return _REENTRANCY_GUARD_STORAGE;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.8.28 <0.9.0;

import {ITokenHolder} from "@bao/interfaces/ITokenHolder.sol";

/// @title IGenesis
interface IGenesis is ITokenHolder {
    /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/
    event GenesisBegins();
    event GenesisEnds();
    event Deposit(address indexed caller, address indexed receiver, uint256 collateralIn);
    event Withdraw(address indexed caller, address indexed receiver, uint256 amount);
    event Claim(address indexed caller, address indexed receiver, uint256 peggedAmount, uint256 leveragedAmount);

    /*//////////////////////////////////////////////////////////////
                                ERRORS
    //////////////////////////////////////////////////////////////*/

    /// @dev Thrown when an attempt to withdraw both pegged and leveraged token.
    error GenesisIsNotEnded();

    /// @dev Thrown when the amount of collateral token is not enough.
    error InsufficientCollateral(address token);

    /// @dev Thrown when deposit after the genesis process has ended.
    error GenesisIsEnded();

    /*//////////////////////////////////////////////////////////////
                        PUBLIC READ FUNCTIONS
    //////////////////////////////////////////////////////////////*/

    /// @notice returns the minter contract
    // solhint-disable-next-line func-name-mixedcase
    function MINTER() external view returns (address);

    /// @notice returns the collateral token used by the minter
    // solhint-disable-next-line func-name-mixedcase
    function WRAPPED_COLLATERAL_TOKEN() external view returns (address token);

    /// @notice returns the pegged token used by the minter
    // solhint-disable-next-line func-name-mixedcase
    function PEGGED_TOKEN() external view returns (address token);

    /// @notice returns the leveraged token used by the minter
    // solhint-disable-next-line func-name-mixedcase
    function LEVERAGED_TOKEN() external view returns (address token);

    /// @notice returns the amount of collateral deposited by `depositor`
    function balanceOf(address depositor) external view returns (uint256 share);

    /// @notice returns the amount of tokens that could be minted for the `depositor`
    /// given the current price
    function claimable(address depositor) external view returns (uint256 peggedAmount, uint256 leveragedAmount);

    /// @notice returns whether the genesis phase has ended or not
    function genesisIsEnded() external view returns (bool ended);

    /*//////////////////////////////////////////////////////////////
                        PUBLIC UPDATE FUNCTIONS
    //////////////////////////////////////////////////////////////*/

    /// @notice Deposit collateral token to this contract.
    /// @param collateralIn The amount of token to deposit.
    /// @param receiver The address of pool share receiver.
    function deposit(uint256 collateralIn, address receiver) external;

    /// @notice Withdraw some collateral already deposited in this contract before genesis has ended.
    /// @param amount The amount of collateral token being withdrawn to receiver. If the share is less then all of the share is transferred
    /// @param receiver The address of collateral token receiver.
    /// @return collateralOut The amount of collateral token received.
    function withdraw(uint256 amount, address receiver) external returns (uint256 collateralOut);

    /// @notice Withdraw pegged and leveraged tokens from this contract.
    /// @param receiver The address of token receiver.
    function claim(address receiver) external;

    /*//////////////////////////////////////////////////////////////
                      PROTECTED UPDATE FUNCTIONS
    //////////////////////////////////////////////////////////////*/

    /// @notice Initialize minter with the collateral in this contract.
    function endGenesis() external;
}

// 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 v5.1.0) (utils/StorageSlot.sol)
// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.

pragma solidity 0.8.30;

// solhint-disable no-inline-assembly
/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * TIP: Consider using this library along with {SlotDerivation}.
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    struct Int256Slot {
        int256 value;
    }

    struct StringSlot {
        string value;
    }

    struct BytesSlot {
        bytes value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        assembly ("memory-safe") {
            r.slot := slot
        }
    }

    /**
     * @dev Returns a `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        assembly ("memory-safe") {
            r.slot := slot
        }
    }

    /**
     * @dev Returns a `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        assembly ("memory-safe") {
            r.slot := slot
        }
    }

    /**
     * @dev Returns a `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        assembly ("memory-safe") {
            r.slot := slot
        }
    }

    /**
     * @dev Returns a `Int256Slot` with member `value` located at `slot`.
     */
    function getInt256Slot(bytes32 slot) internal pure returns (Int256Slot storage r) {
        assembly ("memory-safe") {
            r.slot := slot
        }
    }

    /**
     * @dev Returns a `StringSlot` with member `value` located at `slot`.
     */
    function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) {
        assembly ("memory-safe") {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` representation of the string storage pointer `store`.
     */
    function getStringSlot(string storage store) internal pure returns (StringSlot storage r) {
        assembly ("memory-safe") {
            r.slot := store.slot
        }
    }

    /**
     * @dev Returns a `BytesSlot` with member `value` located at `slot`.
     */
    function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) {
        assembly ("memory-safe") {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.
     */
    function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) {
        assembly ("memory-safe") {
            r.slot := store.slot
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.8.28 <0.9.0;

interface ITokenHolder {
    /*//////////////////////////////////////////////////////////////////////////
                                       EVENTS
    //////////////////////////////////////////////////////////////////////////*/

    /// @notice emits when a token has been swept, via the sweep function
    /// @param token the token being swept
    /// @param amount amount of given token swept
    /// @param to address the tokens have been transferred to
    event Swept(address token, uint256 amount, address to);

    /*//////////////////////////////////////////////////////////////////////////
                              PUBLIC UPDATE FUNCTIONS
    //////////////////////////////////////////////////////////////////////////*/

    /// @notice transfers tokens owned by this contract to `receiver`
    /// @param token the token being swept
    /// @param amount amount of given token swept
    /// @param receiver address the tokens have been transferred to
    function sweep(address token, uint256 amount, address receiver) external;
}

// 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) (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) (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);
}