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// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";

import "./wstETHFarm.sol";
import "../../OwnableMaster.sol";

contract wstETHManager is ERC721Enumerable, OwnableMaster, wstETHFarm {

    string public baseURI;
    string public baseExtension;

    // Tracks increment of keys
    uint256 public totalMinted;

    // Tracks reserved counter
    uint256 public totalReserved;

    // Tracks amount of reusable NFTs
    uint256 public availableNFTCount;

    // Maps access to wiseLendingNFT through farmNFT
    mapping(uint256 => uint256) public farmingKeys;

    // Tracks reusable wiseLendingNFTs after burn
    mapping(uint256 => uint256) public availableNFTs;

    // Tracks reserved NFTs mapped to address
    mapping(address => uint256) public reserved;

    modifier onlyKeyOwner(
        uint256 _keyId
    ) {
        if (isOwner(_keyId, msg.sender) == false) {
            revert InvalidOwner();
        }
        _;
    }

    constructor(
        string memory _name,
        string memory _symbol,
        string memory _initBaseURI,
        address _wiseLendingAddress,
        uint256 _collateralFactor
    )
        ERC721(
            _name,
            _symbol
        )
        OwnableMaster(
            msg.sender
        )
        wstETHFarm(
            _wiseLendingAddress,
            _collateralFactor
        )
    {
        baseURI = _initBaseURI;
    }

    function _incrementReserved()
        internal
        returns (uint256)
    {
        return ++totalReserved;
    }

    function changeMinDeposit(
        uint256 _newMinDeposit
    )
        external
        onlyMaster
    {
        minDepositUsdAmount = _newMinDeposit;

        emit MinDepositChange(
            _newMinDeposit,
            block.timestamp
        );
    }

    function _getNextReserveKey()
        internal
        returns (uint256)
    {
        return totalMinted + _incrementReserved();
    }

    function _reserveKey(
        address _userAddress,
        uint256 _wiseLendingNFT
    )
        internal
        returns (uint256)
    {
        if (reserved[_userAddress] > 0) {
            revert AlreadyReserved();
        }

        uint256 keyId = _getNextReserveKey();

        reserved[_userAddress] = keyId;
        farmingKeys[keyId] = _wiseLendingNFT;

        return keyId;
    }

    function getMinAmountOut(
        uint256 _keyId,
        uint256 _slippage
    )
        external
        view
        returns (uint256)
    {
        uint256 collateral = _getPostionCollateralToken(
            farmingKeys[_keyId]
        );

        uint256 amountStETH = WST_ETH.getStETHByWstETH(
            collateral
        );

        uint256 amountOut = CURVE.get_dy(
            1,
            0,
            amountStETH
        );

        return amountOut
            * _slippage
            / PRECISION_FACTOR_E18;
    }

    /**
     * @dev External function deactivating the power farm by
     * disableing the openPosition function. Allowing user
     * to manualy payback and withdraw.
     */
    function shutdownFarm(
        bool _state
    )
        external
        onlyMaster
    {
        isShutdown = _state;

        emit FarmStatus(
            _state,
            block.timestamp
        );
    }

    /**
     * @dev Standard receive functions forwarding
     * directly send ETH to the master address.
     */
    receive()
        external
        payable
    {
        emit ETHReceived(
            msg.value,
            msg.sender
        );
    }

    /**
     * @dev External set function to change referral address
     * for lido staking. Can only be called by master.
     */
    function changeRefAddress(
        address _newAddress
    )
        external
        onlyMaster
    {
        referralAddress = _newAddress;

        emit ReferralUpdate(
            _newAddress,
            block.timestamp
        );
    }

    function enterFarm(
        uint256 _amount,
        uint256 _leverage
    )
        external
        isActive
        updatePools
        returns (uint256)
    {
        uint256 wiseLendingNFT = _getWiseLendingNFT();

        _safeTransferFrom(
            WETH_ADDRESS,
            msg.sender,
            address(this),
            _amount
        );

        _openPosition(
            wiseLendingNFT,
            _amount,
            _leverage
        );

        uint256 keyId = _reserveKey(
            msg.sender,
            wiseLendingNFT
        );

        emit FarmEntry(
            keyId,
            wiseLendingNFT,
            _leverage,
            _amount,
            block.timestamp
        );

        return keyId;
    }

    function enterFarmETH(
        uint256 _leverage
    )
        external
        payable
        isActive
        updatePools
        returns (uint256)
    {
        uint256 wiseLendingNFT = _getWiseLendingNFT();

        _wrapETH(
            msg.value
        );

        _openPosition(
            wiseLendingNFT,
            msg.value,
            _leverage
        );

        uint256 keyId = _reserveKey(
            msg.sender,
            wiseLendingNFT
        );

        emit FarmEntry(
            keyId,
            wiseLendingNFT,
            _leverage,
            msg.value,
            block.timestamp
        );

        return keyId;
    }

    function _getWiseLendingNFT()
        internal
        returns (uint256)
    {
        if (availableNFTCount == 0) {
            uint256 nftId = POSITION_NFT.mintPositionForUser(
                address(this)
            );

            _registrationFarm(
                nftId
            );

            POSITION_NFT.approve(
                AAVE_HUB_ADDRESS,
                nftId
            );

            return nftId;
        }

        return availableNFTs[
            availableNFTCount--
        ];
    }

    function exitFarm(
        uint256 _keyId,
        uint256 _minOutAmount,
        bool _ethBack
    )
        external
        updatePools
        onlyKeyOwner(_keyId)
    {
        uint256 wiseLendingNFT = farmingKeys[
            _keyId
        ];

        delete farmingKeys[
            _keyId
        ];

        if (reserved[msg.sender] == _keyId) {
            reserved[msg.sender] = 0;
        } else {
            _burn(
                _keyId
            );
        }

        emit FarmExit(
            _keyId,
            wiseLendingNFT,
            _minOutAmount,
            block.timestamp
        );

        availableNFTs[
            ++availableNFTCount
        ] = wiseLendingNFT;

        _closingPosition(
            wiseLendingNFT,
            _minOutAmount,
            _ethBack
        );
    }

    function manuallyPaybackShares(
        uint256 _keyId,
        uint256 _paybackShares
    )
        external
        updatePools
    {
        _manuallyPaybackShares(
            farmingKeys[_keyId],
            _paybackShares
        );

        emit ManualPaybackShares(
            _keyId,
            farmingKeys[_keyId],
            _paybackShares,
            block.timestamp
        );
    }

    function manuallyWithdrawShares(
        uint256 _keyId,
        uint256 _withdrawShares
    )
        external
        updatePools
        onlyKeyOwner(_keyId)
    {
        _manuallyWithdrawShares(
            farmingKeys[_keyId],
            _withdrawShares
        );

        emit ManualWithdrawShares(
            _keyId,
            farmingKeys[_keyId],
            _withdrawShares,
            block.timestamp
        );
    }

    function isOwner(
        uint256 _keyId,
        address _owner
    )
        public
        view
        returns (bool)
    {
        if (reserved[_owner] == _keyId) {
            return true;
        }

        if (ownerOf(_keyId) == _owner) {
            return true;
        }

        return false;
    }

    function _mintKeyForUser(
        uint256 _keyId,
        address _userAddress
    )
        internal
        returns (uint256)
    {
        if (_keyId == 0) {
            revert InvalidKey();
        }

        delete reserved[
            _userAddress
        ];

        _mint(
            _userAddress,
            _keyId
        );

        totalMinted++;
        totalReserved--;

        return _keyId;
    }

    function approveMint(
        address _spender,
        uint256 _keyId
    )
        external
    {
        if (reserved[msg.sender] == _keyId) {
            _mintKeyForUser(
                _keyId,
                msg.sender
            );
        }

        approve(
            _spender,
            _keyId
        );
    }

    function mintReserved()
        external
        returns (uint256)
    {
        return _mintKeyForUser(
            reserved[
                msg.sender
            ],
            msg.sender
        );
    }

    /**
     * @dev Returns positions of owner
     */
    function walletOfOwner(
        address _owner
    )
        external
        view
        returns (uint256[] memory)
    {
        uint256 reservedId = reserved[
            _owner
        ];

        uint256 ownerTokenCount = balanceOf(
            _owner
        );

        uint256 reservedCount;

        if (reservedId > 0) {
            reservedCount = 1;
        }

        uint256[] memory tokenIds = new uint256[](
            ownerTokenCount + reservedCount
        );

        uint256 i;

        for (i; i < ownerTokenCount; ++i) {
            tokenIds[i] = tokenOfOwnerByIndex(
                _owner,
                i
            );
        }

        if (reservedId > 0) {
            tokenIds[i] = reservedId;
        }

        return tokenIds;
    }

    /**
     * @dev Allows to update base target for MetaData.
     */
    function setBaseURI(
        string memory _newBaseURI
    )
        external
        onlyMaster
    {
        baseURI = _newBaseURI;

        emit BaseUrlChange(
            _newBaseURI,
            block.timestamp
        );
    }

    function setBaseExtension(
        string memory _newBaseExtension
    )
        external
        onlyMaster
    {
        baseExtension = _newBaseExtension;

        emit BaseExtensionChange(
            _newBaseExtension,
            block.timestamp
        );
    }

    /**
     * @dev Returns path to MetaData URI
     */
    function tokenURI(
        uint256 _tokenId
    )
        public
        view
        override
        returns (string memory)
    {
        require(
            _exists(_tokenId) == true,
            "wstETHManager: WRONG_TOKEN"
        );

        string memory currentBaseURI = baseURI;

        if (bytes(currentBaseURI).length == 0) {
            return "";
        }

        return string(
            abi.encodePacked(
                currentBaseURI,
                _toString(_tokenId),
                baseExtension
            )
        );
    }

    /**
     * @dev Converts tokenId uint to string.
     */
    function _toString(
        uint256 _tokenId
    )
        internal
        pure
        returns (string memory str)
    {
        if (_tokenId == 0) {
            return "0";
        }

        uint256 j = _tokenId;
        uint256 length;

        while (j != 0) {
            length++;
            j /= 10;
        }

        bytes memory bstr = new bytes(
            length
        );

        uint256 k = length;
        j = _tokenId;

        while (j != 0) {
            bstr[--k] = bytes1(
                uint8(
                    48 + j % 10
                )
            );
            j /= 10;
        }

        str = string(
            bstr
        );
    }
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

error NotMaster();
error NotProposed();

contract OwnableMaster {

    address public master;
    address public proposedMaster;

    address constant ZERO_ADDRESS = address(0x0);

    modifier onlyProposed() {
        _onlyProposed();
        _;
    }

    function _onlyMaster()
        private
        view
    {
        if (msg.sender == master) {
            return;
        }

        revert NotMaster();
    }

    modifier onlyMaster() {
        _onlyMaster();
        _;
    }

    function _onlyProposed()
        private
        view
    {
        if (msg.sender == proposedMaster) {
            return;
        }

        revert NotProposed();
    }

    constructor(
        address _master
    ) {
        master = _master;
    }

    /**
     * @dev Allows to propose next master.
     * Must be claimed by proposer.
     */
    function proposeOwner(
        address _proposedOwner
    )
        external
        onlyMaster
    {
        proposedMaster = _proposedOwner;
    }

    /**
     * @dev Allows to claim master role.
     * Must be called by proposer.
     */
    function claimOwnership()
        external
        onlyProposed
    {
        master = proposedMaster;
    }

    /**
     * @dev Removes master role.
     * No ability to be in control.
     */
    function renounceOwnership()
        external
        onlyMaster
    {
        master = ZERO_ADDRESS;
        proposedMaster = ZERO_ADDRESS;
    }
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

/**
 * @author Christoph Krpoun
 * @author René Hochmuth
 * @author Vitally Marinchenko
 */

import "./wstETHFarmLeverageLogic.sol";

/**
 * @dev The wstETH power farm is an automated leverage contract working as a
 * second layer for Wise lending. It needs to be registed inside the latter one
 * to have access to the pools. It uses BALANCER FLASHLOANS as well as CURVE POOLS and
 * the LIDO contracts for staked ETH and wrapped staked ETH.
 * The corresponding contract addresses can be found in {wstETHFarmDeclarations.sol}.
 *
 * It allows to open leverage positions with wrapped ETH in form of aave wrapped ETH.
 * For opening a position the user needs to have {_initalAmount} of ETH or WETH in the wallet.
 * A maximum of 15x leverage is possible. Once the user registers with its position NFT that
 * NFT is locked for ALL other interactions with wise lending as long as the positon is open!
 *
 * For more infos see {https://wisesoft.gitbook.io/wise/}
 */

contract wstETHFarm is wstETHFarmLeverageLogic {

    constructor(
        address _wiseLendingAddress,
        uint256 _collateralFactor
    )
        wstETHFarmDeclarations(
            _wiseLendingAddress,
            _collateralFactor
        )
    {}

    /**
     * @dev External view function approximating the
     * new resulting net APY for a position setup.
     *
     * Note: Not 100% accurate because no syncPool is performed.
     */
    function getApproxNetAPY(
        uint256 _initialAmount,
        uint256 _leverage,
        uint256 _wstETHAPY
    )
        external
        view
        returns (
            uint256,
            bool
        )
    {
        return _getApproxNetAPY(
            _initialAmount,
            _leverage,
            _wstETHAPY
        );
    }

    /**
     * @dev External view function approximating the
     * new borrow amount for the pool when {_borrowAmount}
     * is borrowed.
     *
     * Note: Not 100% accurate because no syncPool is performed.
     */
    function getNewBorrowRate(
        uint256 _borrowAmount
    )
        external
        view
        returns (uint256)
    {
        return _getNewBorrowRate(
            _borrowAmount
        );
    }

    /**
     * @dev View functions returning the current
     * debt ratio of the postion with {_nftId}
     */
    function getLiveDebtRatio(
        uint256 _nftId
    )
        external
        view
        returns (uint256)
    {
        uint256 totalCollateral = getTotalWeightedCollateralUSD(
            _nftId
        );

        if (totalCollateral == 0) {
            return 0;
        }

        return getPositionBorrowUSD(_nftId)
            * PRECISION_FACTOR_E18
            / totalCollateral;
    }

    /**
     * @dev Liquidation function for open power farm
     * postions which have a debtratio greater 100 %.
     *
     * NOTE: The borrow token is defined by the power farm
     * and is always aave wrapped ETH.
     * The receiving token is always wrapped staked ETH.
     */
    function liquidatePartiallyFromToken(
        uint256 _nftId,
        uint256 _nftIdLiquidator,
        uint256 _shareAmountToPay
    )
        external
        updatePools
        returns (
            uint256 paybackAmount,
            uint256 receivingAmount
        )
    {
        return _coreLiquidation(
            _nftId,
            _nftIdLiquidator,
            _shareAmountToPay
        );
    }

    /**
     * @dev Manually payback function for users. Takes
     * {_paybackShares} which can be converted
     * into token with {paybackAmount()} or vice verse
     * with {calculateBorrowShares()} from wise lending
     * contract.
     */
    function _manuallyPaybackShares(
        uint256 _nftId,
        uint256 _paybackShares
    )
        internal
    {
        uint256 paybackAmount = WISE_LENDING.paybackAmount(
            AAVE_WETH_ADDRESS,
            _paybackShares
        );

        _safeTransferFrom(
            AAVE_WETH_ADDRESS,
            msg.sender,
            address(this),
            paybackAmount
        );

        WISE_LENDING.paybackExactShares(
            _nftId,
            AAVE_WETH_ADDRESS,
            _paybackShares
        );
    }

    /**
     * @dev Manually withdraw function for users. Takes
     * {_withdrawShares} which can be converted
     * into token with {cashoutAmount()} or vice verse
     * with {calculateLendingShares()} from wise lending
     * contract.
     */
    function _manuallyWithdrawShares(
        uint256 _nftId,
        uint256 _withdrawShares
    )
        internal
    {
        uint256 withdrawAmount = WISE_LENDING.cashoutAmount(
            WST_ETH_ADDRESS,
            _withdrawShares
        );

        if (_checkBorrowLimit(_nftId, withdrawAmount) == false) {
            revert ResultsInBadDebt();
        }

        withdrawAmount = WISE_LENDING.withdrawExactShares(
            _nftId,
            WST_ETH_ADDRESS,
            _withdrawShares
        );

        _safeTransfer(
            WST_ETH_ADDRESS,
            msg.sender,
            withdrawAmount
        );
    }

    /**
     * @dev Internal function combining the core
     * logic for {openPosition()}.
     */
    function _openPosition(
        uint256 _nftId,
        uint256 _initialAmount,
        uint256 _leverage
    )
        internal
    {
        if (_leverage > MAX_LEVERAGE) {
            revert LeverageTooHigh();
        }

        uint256 leveragedAmount = getLeverageAmount(
            _initialAmount,
            _leverage
        );

        uint256 flashloanAmount = leveragedAmount
            - _initialAmount;

        if (_aboveMinDepositAmount(leveragedAmount) == false) {
            revert AmountTooSmall();
        }

        _executeBalancerFlashLoan(
            {
                _nftId: _nftId,
                _amount: flashloanAmount,
                _initialAmount: _initialAmount,
                _lendingShares: 0,
                _borrowShares: 0,
                _minAmountOut: 0,
                _ethBack: false
            }
        );
    }

    /**
     * @dev Internal function combining the core
     * logic for {closingPosition()}.
     *
     * Note: {_minOutAmount} passed through UI by querring
     * {get_dy()} from curve pool contract.
     */
    function _closingPosition(
        uint256 _nftId,
        uint256 _minOutAmount,
        bool _ethBack
    )
        internal
    {
        uint256 borrowShares = _getPositionBorrowShares(
            _nftId
        );

        uint256 lendingShares = _getPositionLendingShares(
            _nftId
        );

        uint256 borrowAmount = _getPositionBorrowToken(
            _nftId
        );

        _executeBalancerFlashLoan(
            {
                _nftId: _nftId,
                _amount: borrowAmount,
                _initialAmount: 0,
                _lendingShares: lendingShares,
                _borrowShares: borrowShares,
                _minAmountOut: _minOutAmount,
                _ethBack: _ethBack
            }
        );
    }

    /**
     * @dev Makes a call to WISE_LENDING to
     * register {_nftId} for specific farm use.
     */
    function _registrationFarm(
        uint256 _nftId
    )
        internal
    {
        WISE_LENDING.setRegistrationIsolationPool(
            _nftId,
            true
        );

        emit RegistrationFarm(
            _nftId,
            block.timestamp
        );
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/extensions/ERC721Enumerable.sol)

pragma solidity ^0.8.0;

import "../ERC721.sol";
import "./IERC721Enumerable.sol";

/**
 * @dev This implements an optional extension of {ERC721} defined in the EIP that adds
 * enumerability of all the token ids in the contract as well as all token ids owned by each
 * account.
 */
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
    // Mapping from owner to list of owned token IDs
    mapping(address => mapping(uint256 => uint256)) private _ownedTokens;

    // Mapping from token ID to index of the owner tokens list
    mapping(uint256 => uint256) private _ownedTokensIndex;

    // Array with all token ids, used for enumeration
    uint256[] private _allTokens;

    // Mapping from token id to position in the allTokens array
    mapping(uint256 => uint256) private _allTokensIndex;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
        return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
        return _ownedTokens[owner][index];
    }

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _allTokens.length;
    }

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
        return _allTokens[index];
    }

    /**
     * @dev See {ERC721-_beforeTokenTransfer}.
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 firstTokenId,
        uint256 batchSize
    ) internal virtual override {
        super._beforeTokenTransfer(from, to, firstTokenId, batchSize);

        if (batchSize > 1) {
            // Will only trigger during construction. Batch transferring (minting) is not available afterwards.
            revert("ERC721Enumerable: consecutive transfers not supported");
        }

        uint256 tokenId = firstTokenId;

        if (from == address(0)) {
            _addTokenToAllTokensEnumeration(tokenId);
        } else if (from != to) {
            _removeTokenFromOwnerEnumeration(from, tokenId);
        }
        if (to == address(0)) {
            _removeTokenFromAllTokensEnumeration(tokenId);
        } else if (to != from) {
            _addTokenToOwnerEnumeration(to, tokenId);
        }
    }

    /**
     * @dev Private function to add a token to this extension's ownership-tracking data structures.
     * @param to address representing the new owner of the given token ID
     * @param tokenId uint256 ID of the token to be added to the tokens list of the given address
     */
    function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
        uint256 length = ERC721.balanceOf(to);
        _ownedTokens[to][length] = tokenId;
        _ownedTokensIndex[tokenId] = length;
    }

    /**
     * @dev Private function to add a token to this extension's token tracking data structures.
     * @param tokenId uint256 ID of the token to be added to the tokens list
     */
    function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
        _allTokensIndex[tokenId] = _allTokens.length;
        _allTokens.push(tokenId);
    }

    /**
     * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
     * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
     * gas optimizations e.g. when performing a transfer operation (avoiding double writes).
     * This has O(1) time complexity, but alters the order of the _ownedTokens array.
     * @param from address representing the previous owner of the given token ID
     * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
     */
    function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
        // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
        uint256 tokenIndex = _ownedTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary
        if (tokenIndex != lastTokenIndex) {
            uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];

            _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
            _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
        }

        // This also deletes the contents at the last position of the array
        delete _ownedTokensIndex[tokenId];
        delete _ownedTokens[from][lastTokenIndex];
    }

    /**
     * @dev Private function to remove a token from this extension's token tracking data structures.
     * This has O(1) time complexity, but alters the order of the _allTokens array.
     * @param tokenId uint256 ID of the token to be removed from the tokens list
     */
    function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
        // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = _allTokens.length - 1;
        uint256 tokenIndex = _allTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
        // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
        // an 'if' statement (like in _removeTokenFromOwnerEnumeration)
        uint256 lastTokenId = _allTokens[lastTokenIndex];

        _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
        _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index

        // This also deletes the contents at the last position of the array
        delete _allTokensIndex[tokenId];
        _allTokens.pop();
    }
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

import "./wstETHFarmMathLogic.sol";

abstract contract wstETHFarmLeverageLogic is
    wstETHFarmMathLogic,
    IFlashLoanRecipient
{
    /**
     * @dev Wrapper function preparing balancer flashloan and
     * loading data to pass into receiver.
     */
    function _executeBalancerFlashLoan(
        uint256 _nftId,
        uint256 _amount,
        uint256 _initialAmount,
        uint256 _lendingShares,
        uint256 _borrowShares,
        uint256 _minAmountOut,
        bool _ethBack
    )
        internal
    {
        bytes memory data = abi.encode(
            _nftId,
            _initialAmount,
            _lendingShares,
            _borrowShares,
            _minAmountOut,
            msg.sender,
            _ethBack
        );

        globalTokens.push(
            WETH
        );

        globalAmounts.push(
            _amount
        );

        allowEnter = true;

        BALANCER_VAULT.flashLoan(
            this,
            globalTokens,
            globalAmounts,
            data
        );

        globalTokens.pop();
        globalAmounts.pop();
    }

    /**
     * @dev Receive function from balancer flashloan. Body
     * is called from balancer at the end of their {flashLoan()}
     * logic. Overwritten with opening flows.
     */
    function receiveFlashLoan(
        IERC20[] memory _flashloanToken,
        uint256[] memory _amounts,
        uint256[] memory _feeAmounts,
        bytes memory _userData
    )
        external
    {
        if (allowEnter == false) {
            revert AccessDenied();
        }

        allowEnter = false;

        if (_flashloanToken.length == 0) {
            revert InvalidParam();
        }

        if (msg.sender != BALANCER_ADDRESS) {
            revert NotBalancerVault();
        }

        uint256 flashloanAmount = _amounts[0];

        uint256 totalDebtBalancer = flashloanAmount
            + _feeAmounts[0];

        (
            uint256 nftId,
            uint256 initialAmount,
            uint256 lendingShares,
            uint256 borrowShares,
            uint256 minOutAmount,
            address caller,
            bool ethBack

        ) = abi.decode(
            _userData,
            (
                uint256,
                uint256,
                uint256,
                uint256,
                uint256,
                address,
                bool
            )
        );

        if (initialAmount == 0) {
            _logicClosePosition(
                nftId,
                borrowShares,
                lendingShares,
                totalDebtBalancer,
                minOutAmount,
                caller,
                ethBack
            );

            return;
        }

        _logicOpenPosition(
            nftId,
            flashloanAmount + initialAmount,
            totalDebtBalancer
        );
    }

    /**
     * @dev Core logic for closing a position using balancer
     * flashloans.
     */
    function _logicClosePosition(
        uint256 _nftId,
        uint256 _borrowShares,
        uint256 _lendingShares,
        uint256 _totalDebtBalancer,
        uint256 _minOutAmount,
        address _caller,
        bool _ethBack
    )
        internal
    {
        AAVE_HUB.paybackExactShares(
            _nftId,
            WETH_ADDRESS,
            _borrowShares
        );

        uint256 withdrawAmount = WISE_LENDING.withdrawExactShares(
            _nftId,
            WST_ETH_ADDRESS,
            _lendingShares
        );

        uint256 stETHAmount = WST_ETH.unwrap(
            withdrawAmount
        );

        uint256 ethAmount = _swapStETHintoETH(
            stETHAmount,
            _minOutAmount
        );

        if (_ethBack == true) {

            _closingRouteETH(
                ethAmount,
                _totalDebtBalancer,
                _caller
            );

            return;
        }

        _closingRouteWETH(
            ethAmount,
            _totalDebtBalancer,
            _caller
        );
    }

    /**
     * @dev Internal wrapper function for a closing route
     * which returns WETH to the owner in the end.
     */
    function _closingRouteWETH(
        uint256 _ethAmount,
        uint256 _totalDebtBalancer,
        address _caller
    )
        internal
    {
        _wrapETH(
            _ethAmount
        );

        _safeTransfer(
            WETH_ADDRESS,
            msg.sender,
            _totalDebtBalancer
        );

        _safeTransfer(
            WETH_ADDRESS,
            _caller,
            _ethAmount - _totalDebtBalancer
        );
    }

    /**
     * @dev Internal wrapper function for a closing route
     * which returns ETH to the owner in the end.
     */
    function _closingRouteETH(
        uint256 _ethAmount,
        uint256 _totalDebtBalancer,
        address _caller
    )
        internal
    {
        _wrapETH(
            _totalDebtBalancer
        );

        _safeTransfer(
            WETH_ADDRESS,
            msg.sender,
            _totalDebtBalancer
        );

        payable(_caller).transfer(
            _ethAmount - _totalDebtBalancer
        );
    }

    /**
     * @dev Internal wrapper function for curve swap
     * of stETH into ETH.
     */
    function _swapStETHintoETH(
        uint256 _swapAmount,
        uint256 _minOutAmount
    )
        internal
        returns (uint256)
    {
        return CURVE.exchange(
            {
                fromIndex: 1,
                toIndex: 0,
                exactAmountFrom: _swapAmount,
                minReceiveAmount: _minOutAmount
            }
        );
    }

    /**
     * @dev Internal function executing the
     * collateral deposit by converting ETH
     * into wstETH, adding it as collateral and
     * borrowing the flashloan token (WETH) to pay
     * back {_totalDebtBalancer}.
     */
    function _logicOpenPosition(
        uint256 _nftId,
        uint256 _depositAmount,
        uint256 _totalDebtBalancer
    )
        internal
    {
        _unwrapETH(
            _depositAmount
        );

        uint256 stETHShares = ST_ETH.submit{
            value: _depositAmount
        }(
            referralAddress
        );

        uint256 stETHAmount = ST_ETH.getPooledEthByShares(
            stETHShares
        );

        uint256 wstETHAmount = WST_ETH.wrap(
            stETHAmount
        );

        WISE_LENDING.depositExactAmount(
            _nftId,
            WST_ETH_ADDRESS,
            wstETHAmount
        );

        AAVE_HUB.borrowExactAmount(
            _nftId,
            WETH_ADDRESS,
            _totalDebtBalancer
        );

        if (_checkDebtRatio(_nftId) == false) {
            revert DebtRatioTooHigh();
        }

        _safeTransfer(
            WETH_ADDRESS,
            BALANCER_ADDRESS,
            _totalDebtBalancer
        );
    }

    /**
     * @dev Internal function summarizing liquidation
     * checks and interface call for core liquidation
     * from wise lending.
     */
    function _coreLiquidation(
        uint256 _nftId,
        uint256 _nftIdLiquidator,
        uint256 _shareAmountToPay
    )
        internal
        returns (
            uint256 paybackAmount,
            uint256 receivingAmount
        )
    {
        if (_checkDebtRatio(_nftId) == true) {
            revert DebtRatioTooLow();
        }

        paybackAmount = WISE_LENDING.paybackAmount(
            AAVE_WETH_ADDRESS,
            _shareAmountToPay
        );

        receivingAmount = WISE_LENDING.coreLiquidationIsolationPools(
            _nftId,
            _nftIdLiquidator,
            msg.sender,
            msg.sender,
            AAVE_WETH_ADDRESS,
            WST_ETH_ADDRESS,
            paybackAmount,
            _shareAmountToPay
        );
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)

pragma solidity ^0.8.0;

import "../IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.2) (token/ERC721/ERC721.sol)

pragma solidity ^0.8.0;

import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata extension, but not including the Enumerable extension, which is available separately as
 * {ERC721Enumerable}.
 */
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
    using Address for address;
    using Strings for uint256;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to owner address
    mapping(uint256 => address) private _owners;

    // Mapping owner address to token count
    mapping(address => uint256) private _balances;

    // Mapping from token ID to approved address
    mapping(uint256 => address) private _tokenApprovals;

    // Mapping from owner to operator approvals
    mapping(address => mapping(address => bool)) private _operatorApprovals;

    /**
     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC721Metadata).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: address zero is not a valid owner");
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _ownerOf(tokenId);
        require(owner != address(0), "ERC721: invalid token ID");
        return owner;
    }

    /**
     * @dev See {IERC721Metadata-name}.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev See {IERC721Metadata-symbol}.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        _requireMinted(tokenId);

        string memory baseURI = _baseURI();
        return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
    }

    /**
     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty
     * by default, can be overridden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public virtual override {
        address owner = ERC721.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not token owner or approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        _requireMinted(tokenId);

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        _setApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");

        _transfer(from, to, tokenId);
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        safeTransferFrom(from, to, tokenId, "");
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory data
    ) public virtual override {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");
        _safeTransfer(from, to, tokenId, data);
    }

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * `data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeTransfer(
        address from,
        address to,
        uint256 tokenId,
        bytes memory data
    ) internal virtual {
        _transfer(from, to, tokenId);
        require(_checkOnERC721Received(from, to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    /**
     * @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist
     */
    function _ownerOf(uint256 tokenId) internal view virtual returns (address) {
        return _owners[tokenId];
    }

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _ownerOf(tokenId) != address(0);
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);
    }

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeMint(
        address to,
        uint256 tokenId,
        bytes memory data
    ) internal virtual {
        _mint(to, tokenId);
        require(
            _checkOnERC721Received(address(0), to, tokenId, data),
            "ERC721: transfer to non ERC721Receiver implementer"
        );
    }

    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 tokenId) internal virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");

        _beforeTokenTransfer(address(0), to, tokenId, 1);

        // Check that tokenId was not minted by `_beforeTokenTransfer` hook
        require(!_exists(tokenId), "ERC721: token already minted");

        unchecked {
            // Will not overflow unless all 2**256 token ids are minted to the same owner.
            // Given that tokens are minted one by one, it is impossible in practice that
            // this ever happens. Might change if we allow batch minting.
            // The ERC fails to describe this case.
            _balances[to] += 1;
        }

        _owners[tokenId] = to;

        emit Transfer(address(0), to, tokenId);

        _afterTokenTransfer(address(0), to, tokenId, 1);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     * This is an internal function that does not check if the sender is authorized to operate on the token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721.ownerOf(tokenId);

        _beforeTokenTransfer(owner, address(0), tokenId, 1);

        // Update ownership in case tokenId was transferred by `_beforeTokenTransfer` hook
        owner = ERC721.ownerOf(tokenId);

        // Clear approvals
        delete _tokenApprovals[tokenId];

        unchecked {
            // Cannot overflow, as that would require more tokens to be burned/transferred
            // out than the owner initially received through minting and transferring in.
            _balances[owner] -= 1;
        }
        delete _owners[tokenId];

        emit Transfer(owner, address(0), tokenId);

        _afterTokenTransfer(owner, address(0), tokenId, 1);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId, 1);

        // Check that tokenId was not transferred by `_beforeTokenTransfer` hook
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");

        // Clear approvals from the previous owner
        delete _tokenApprovals[tokenId];

        unchecked {
            // `_balances[from]` cannot overflow for the same reason as described in `_burn`:
            // `from`'s balance is the number of token held, which is at least one before the current
            // transfer.
            // `_balances[to]` could overflow in the conditions described in `_mint`. That would require
            // all 2**256 token ids to be minted, which in practice is impossible.
            _balances[from] -= 1;
            _balances[to] += 1;
        }
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);

        _afterTokenTransfer(from, to, tokenId, 1);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits an {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
    }

    /**
     * @dev Approve `operator` to operate on all of `owner` tokens
     *
     * Emits an {ApprovalForAll} event.
     */
    function _setApprovalForAll(
        address owner,
        address operator,
        bool approved
    ) internal virtual {
        require(owner != operator, "ERC721: approve to caller");
        _operatorApprovals[owner][operator] = approved;
        emit ApprovalForAll(owner, operator, approved);
    }

    /**
     * @dev Reverts if the `tokenId` has not been minted yet.
     */
    function _requireMinted(uint256 tokenId) internal view virtual {
        require(_exists(tokenId), "ERC721: invalid token ID");
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory data
    ) private returns (bool) {
        if (to.isContract()) {
            try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {
                return retval == IERC721Receiver.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    /// @solidity memory-safe-assembly
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting and burning. If {ERC721Consecutive} is
     * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s tokens will be transferred to `to`.
     * - When `from` is zero, the tokens will be minted for `to`.
     * - When `to` is zero, ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     * - `batchSize` is non-zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 firstTokenId,
        uint256 batchSize
    ) internal virtual {}

    /**
     * @dev Hook that is called after any token transfer. This includes minting and burning. If {ERC721Consecutive} is
     * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s tokens were transferred to `to`.
     * - When `from` is zero, the tokens were minted for `to`.
     * - When `to` is zero, ``from``'s tokens were burned.
     * - `from` and `to` are never both zero.
     * - `batchSize` is non-zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 firstTokenId,
        uint256 batchSize
    ) internal virtual {}

    /**
     * @dev Unsafe write access to the balances, used by extensions that "mint" tokens using an {ownerOf} override.
     *
     * WARNING: Anyone calling this MUST ensure that the balances remain consistent with the ownership. The invariant
     * being that for any address `a` the value returned by `balanceOf(a)` must be equal to the number of tokens such
     * that `ownerOf(tokenId)` is `a`.
     */
    // solhint-disable-next-line func-name-mixedcase
    function __unsafe_increaseBalance(address account, uint256 amount) internal {
        _balances[account] += amount;
    }
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

import "./wstETHFarmDeclarations.sol";

abstract contract wstETHFarmMathLogic is wstETHFarmDeclarations {

    /**
     * @dev Wrapper for wrapping
     * ETH call.
     */
    function _wrapETH(
        uint256 _value
    )
        internal
    {
        WETH.deposit{
            value: _value
        }();
    }

    /**
     * @dev Wrapper for unwrapping
     * ETH call.
     */
    function _unwrapETH(
        uint256 _value
    )
        internal
    {
        WETH.withdraw(
            _value
        );
    }

    modifier updatePools() {
        _updatePools();
        _;
    }

    /**
     * @dev Update logic for pools via wise lending
     * interfaces
     */
    function _updatePools()
        private
    {
        WISE_LENDING.preparePool(
            WST_ETH_ADDRESS
        );

        WISE_LENDING.preparePool(
            AAVE_WETH_ADDRESS
        );
    }

    /**
     * @dev Internal function getting the
     * borrow shares from position {_nftId}
     * with token {_borrowToken}
     */
    function _getPositionBorrowShares(
        uint256 _nftId
    )
        internal
        view
        returns (uint256)
    {
        return WISE_LENDING.getPositionBorrowShares(
            _nftId,
            AAVE_WETH_ADDRESS
        );
    }

    /**
     * @dev Internal function converting
     * borrow shares into tokens.
     */
    function _getPositionBorrowToken(
        uint256 _nftId
    )
        internal
        view
        returns(uint256)
    {
        return WISE_LENDING.paybackAmount(
            AAVE_WETH_ADDRESS,
            _getPositionBorrowShares(
                _nftId
            )
        );
    }

    /**
     * @dev Internal function getting the
     * lending shares from position {_nftId}
     * with token {_borrowToken}
     */
    function _getPositionLendingShares(
        uint256 _nftId
    )
        internal
        view
        returns (uint256)
    {
        return WISE_LENDING.getPositionLendingShares(
            _nftId,
            WST_ETH_ADDRESS
        );
    }

    /**
     * @dev Internal function converting
     * lending shares into tokens.
     */
    function _getPostionCollateralToken(
        uint256 _nftId
    )
        internal
        view
        returns(uint256)
    {
        return WISE_LENDING.cashoutAmount(
            WST_ETH_ADDRESS,
            _getPositionLendingShares(
                _nftId
            )
        );
    }

    /**
     * @dev Read function returning the total
     * borrow amount in USD from postion {_nftId}
     */
    function getPositionBorrowUSD(
        uint256 _nftId
    )
        public
        view
        returns (uint256)
    {
        return ORACLE_HUB.getTokensInUSD(
            AAVE_WETH_ADDRESS,
            _getPositionBorrowToken(
                _nftId
            )
        );
    }

    /**
     * @dev Read function returning the total
     * lending amount in USD from postion {_nftId}
     */
    function getTotalWeightedCollateralUSD(
        uint256 _nftId
    )
        public
        view
        returns (uint256)
    {
        return  ORACLE_HUB.getTokensInUSD(
            WST_ETH_ADDRESS,
            _getPostionCollateralToken(_nftId)
        )
            * collateralFactor
            / PRECISION_FACTOR_E18;
    }

    /**
     * @dev Internal function checking if a position
     * with {_nftId} is still used to lock it for
     * unregister function.
     */
    function getLeverageAmount(
        uint256 _initialAmount,
        uint256 _leverage
    )
        public
        pure
        returns (uint256)
    {
        return _initialAmount
            * _leverage
            / PRECISION_FACTOR_E18;
    }

    /**
     * @dev Internal function with math logic for approximating
     * the net APY for the postion aftrer creation.
     */
    function _getApproxNetAPY(
        uint256 _initialAmount,
        uint256 _leverage,
        uint256 _wstETHAPY
    )
        internal
        view
        returns (
            uint256,
            bool
        )
    {
        if (_leverage < PRECISION_FACTOR_E18) {
            return (0, false);
        }

        uint256 leveragedAmount = getLeverageAmount(
            _initialAmount,
            _leverage
        );

        uint256 flashloanAmount = leveragedAmount
            - _initialAmount;

        uint256 newBorrowRate = _getNewBorrowRate(
            flashloanAmount
        );

        uint256 leveragedPositivAPY = _wstETHAPY
            * _leverage
            / PRECISION_FACTOR_E18;

        uint256 leveragedNegativeAPY = newBorrowRate
            * (_leverage - PRECISION_FACTOR_E18)
            / PRECISION_FACTOR_E18;

        bool isPositive = leveragedPositivAPY >= leveragedNegativeAPY;

        uint256 netAPY = isPositive == true
            ? leveragedPositivAPY - leveragedNegativeAPY
            : leveragedNegativeAPY - leveragedPositivAPY;

        return (
            netAPY,
            isPositive
        );
    }

    /**
     * @dev Internal function with math logic for approximating
     * the new borrow APY.
     */
    function _getNewBorrowRate(
        uint256 _borrowAmount
    )
        internal
        view
        returns (uint256)
    {
        uint256 totalPool = WISE_LENDING.getTotalPool(
            AAVE_WETH_ADDRESS
        );

        uint256 pseudoPool = WISE_LENDING.getPseudoTotalPool(
            AAVE_WETH_ADDRESS
        );

        if (totalPool > pseudoPool) {
            return 0;
        }

        uint256 newUtilization = PRECISION_FACTOR_E18 - (PRECISION_FACTOR_E18
            * (totalPool - _borrowAmount)
            / pseudoPool
        );

        uint256 pole = WISE_LENDING.borrowRatesData(
            AAVE_WETH_ADDRESS
        ).pole;

        uint256 mulFactor = WISE_LENDING.borrowRatesData(
            AAVE_WETH_ADDRESS
        ).multiplicativeFactor;

        uint256 baseDivider = pole
            * (pole - newUtilization);

        return mulFactor
            * PRECISION_FACTOR_E18
            * newUtilization
            / baseDivider;
    }

    /**
     * @dev Internal function checking if a position
     * with {_nftId} has a debt ratio under 100%.
     */
    function _checkDebtRatio(
        uint256 _nftId
    )
        internal
        view
        returns (bool res)
    {
        res = getTotalWeightedCollateralUSD(_nftId)
            > getPositionBorrowUSD(_nftId);
    }

    /**
     * @dev Internal function checking if the debt
     * ratio threshold fof 100 % is reached when a
     * manually withdraw is performed.
     */
    function _checkBorrowLimit(
        uint256 _nftId,
        uint256 _amount
    )
        internal
        view
        returns (bool)
    {
        uint256 borrowAmount = getPositionBorrowUSD(
            _nftId
        );

        if (borrowAmount == 0) {
            return true;
        }

        uint256 withdrawValue = ORACLE_HUB.getTokensInUSD(
            WST_ETH_ADDRESS,
            _amount
        )
            * collateralFactor
            / PRECISION_FACTOR_E18;

        return getTotalWeightedCollateralUSD(_nftId) - withdrawValue
            > borrowAmount;
    }

    /**
     * @dev Internal function checking if the leveraged
     * amount is above 5000 USD in value.
     */
    function _aboveMinDepositAmount(
        uint256 _amount
    )
        internal
        view
        returns (bool)
    {
        uint256 equivUSD = ORACLE_HUB.getTokensInUSD(
            WETH_ADDRESS,
            _amount
        );

        return equivUSD >= minDepositUsdAmount;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
     * understand this adds an external call which potentially creates a reentrancy vulnerability.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/Math.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 {
    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) external view returns (string memory);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)

pragma solidity ^0.8.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

import "../../InterfaceHub/IWETH.sol";
import "../../InterfaceHub/IAave.sol";
import "../../InterfaceHub/IStETH.sol";
import "../../InterfaceHub/ICurve.sol";
import "../../InterfaceHub/IWstETH.sol";
import "../../InterfaceHub/IAaveHub.sol";
import "../../InterfaceHub/IWiseLending.sol";
import "../../InterfaceHub/IWiseSecurity.sol";
import "../../InterfaceHub/IPositionNFTs.sol";
import "../../InterfaceHub/IWiseOracleHub.sol";
import "../../InterfaceHub/IBalancerFlashloan.sol";

import "../../TransferHub/TransferHelper.sol";
import "../../TransferHub/ApprovalHelper.sol";

error InvalidKey();
error Deactivated();
error InvalidParam();
error InvalidOwner();
error AccessDenied();
error AmountTooSmall();
error AlreadyReserved();
error LeverageTooHigh();
error DebtRatioTooLow();
error NotBalancerVault();
error DebtRatioTooHigh();
error ResultsInBadDebt();

contract wstETHFarmDeclarations is
    TransferHelper,
    ApprovalHelper
{
    // Bool indicating that a power farm is deactivated
    bool public isShutdown;

    // Bool indicating transaction in progress
    bool internal allowEnter;

    // Array of ERC20 interfaces for balancer flashloan
    IERC20[] public globalTokens;

    // Array of token amounts for balancer flashloan
    uint256[] public globalAmounts;

    // Corresponding Aave borrow token used by farm
    address public immutable aaveTokenAddresses;

    // Borrow token used by farm
    address public immutable borrowTokenAddresses;

    // Referral address used for lido
    address public referralAddress;

    // Collateral factor used for sDAI collateral
    uint256 public collateralFactor;

    IWETH public immutable WETH;
    IAave public immutable AAVE;
    ICurve public immutable CURVE;
    IStETH public immutable ST_ETH;
    IWstETH public immutable WST_ETH;
    IAaveHub public immutable AAVE_HUB;
    IWiseLending public immutable WISE_LENDING;
    IWiseOracleHub public immutable ORACLE_HUB;
    IWiseSecurity public immutable WISE_SECURITY;
    IBalancerVault public immutable BALANCER_VAULT;
    IPositionNFTs public immutable POSITION_NFT;

    // @TODO: need to fetch from AAVE_HUB
    address constant AAVE_ADDRESS = 0x87870Bca3F3fD6335C3F4ce8392D69350B4fA4E2;

    // @TODO: need to fetch from WISE_LENDING
    address constant WETH_ADDRESS = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    // @TODO: can we fetch this from somewhere dynamically? if not pass in constructor
    address constant ST_ETH_ADDRESS = 0xae7ab96520DE3A18E5e111B5EaAb095312D7fE84;

    // @TODO: can we fetch this from somewhere dynamically? if not pass in constructor
    address constant WST_ETH_ADDRESS = 0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0;

    // @TODO: can we fetch this from somewhere dynamically? if not pass in constructor
    address constant BALANCER_ADDRESS = 0xBA12222222228d8Ba445958a75a0704d566BF2C8;

    // @TODO: need to fetch from WISE_LENDING
    address constant AAVE_HUB_ADDRESS = 0x4307d8207f2C429f0dCbd9051b5B1d638c3b7fbB;

    // @TODO: need to fetch from AAVE_HUB
    address constant AAVE_WETH_ADDRESS = 0x4d5F47FA6A74757f35C14fD3a6Ef8E3C9BC514E8;

    // @TODO: can we fetch this from somewhere dynamically? if not pass in constructor
    address constant CURVE_POOL_ADDRESS = 0xDC24316b9AE028F1497c275EB9192a3Ea0f67022;

    // Math constant for computations
    uint256 constant PRECISION_FACTOR_E18 = 1E18;

    // Maximal allowed leverage factor
    uint256 constant MAX_LEVERAGE = 15 * PRECISION_FACTOR_E18;

    // Minimal required deposit amount for leveraged postion in USD
    uint256 public minDepositUsdAmount = 5000 * PRECISION_FACTOR_E18;

    // Max possible amount for uint256
    uint256 constant MAX_AMOUNT = type(uint256).max;

    event FarmEntry(
        uint256 indexed keyId,
        uint256 indexed wiseLendingNFT,
        uint256 indexed leverage,
        uint256 amount,
        uint256 timestamp
    );

    event FarmExit(
        uint256 indexed keyId,
        uint256 indexed wiseLendingNFT,
        uint256 amount,
        uint256 timestamp
    );

    event FarmStatus(
        bool indexed state,
        uint256 timestamp
    );

    event ReferralUpdate(
        address indexed referralAddress,
        uint256 timestamp
    );

    event ManualPaybackShares(
        uint256 indexed keyId,
        uint256 indexed wiseLendingNFT,
        uint256 amount,
        uint256 timestamp
    );

    event ManualWithdrawShares(
        uint256 indexed keyId,
        uint256 indexed wiseLendingNFT,
        uint256 amount,
        uint256 timestamp
    );

    event BaseUrlChange(
        string baseUrl,
        uint256 timestamp
    );

    event BaseExtensionChange(
        string baseExtension,
        uint256 timestamp
    );

    event MinDepositChange(
        uint256 minDepositUsdAmount,
        uint256 timestamp
    );

    event ERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes _data
    );

    event ETHReceived(
        uint256 amount,
        address from
    );

    event RegistrationFarm(
        uint256 nftId,
        uint256 timestamp
    );

    constructor(
        address _wiseLendingAddress,
        uint256 _collateralFactor
    ) {
        WISE_LENDING = IWiseLending(
            _wiseLendingAddress
        );

        ORACLE_HUB = IWiseOracleHub(
            WISE_LENDING.WISE_ORACLE()
        );

        BALANCER_VAULT = IBalancerVault(
            BALANCER_ADDRESS
        );

        WISE_SECURITY = IWiseSecurity(
            WISE_LENDING.WISE_SECURITY()
        );

        AAVE = IAave(
            AAVE_ADDRESS
        );

        WETH = IWETH(
            WETH_ADDRESS
        );

        ST_ETH = IStETH(
            ST_ETH_ADDRESS
        );

        WST_ETH = IWstETH(
            WST_ETH_ADDRESS
        );

        AAVE_HUB = IAaveHub(
            AAVE_HUB_ADDRESS
        );

        CURVE = ICurve(
            CURVE_POOL_ADDRESS
        );

        POSITION_NFT = IPositionNFTs(
            WISE_LENDING.POSITION_NFT()
        );

        collateralFactor = _collateralFactor;

        borrowTokenAddresses = WETH_ADDRESS;
        aaveTokenAddresses = AAVE_WETH_ADDRESS;

        _doApprovals(
            _wiseLendingAddress
        );
    }

    function doApprovals()
        external
    {
        _doApprovals(
            address(WISE_LENDING)
        );
    }

    function _doApprovals(
        address _wiseLendingAddress
    )
        internal
    {
        _safeApprove(
            AAVE_WETH_ADDRESS,
            _wiseLendingAddress,
            MAX_AMOUNT
        );

        _safeApprove(
            WETH_ADDRESS,
            AAVE_HUB_ADDRESS,
            MAX_AMOUNT
        );

        _safeApprove(
            ST_ETH_ADDRESS,
            WST_ETH_ADDRESS,
            MAX_AMOUNT
        );

        _safeApprove(
            WST_ETH_ADDRESS,
            address(WISE_LENDING),
            MAX_AMOUNT
        );

        _safeApprove(
            ST_ETH_ADDRESS,
            CURVE_POOL_ADDRESS,
            MAX_AMOUNT
        );
    }

    modifier isActive() {
        if (isShutdown == true) {
            revert Deactivated();
        }
        _;
    }

    function onERC721Received(
        address _operator,
        address _from,
        uint256 _tokenId,
        bytes calldata _data
    )
        external
        returns (bytes4)
    {
        emit ERC721Received(
            _operator,
            _from,
            _tokenId,
            _data
        );

        return this.onERC721Received.selector;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * 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[EIP 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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(
        uint256 x,
        uint256 y,
        uint256 denominator
    ) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1);

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(
        uint256 x,
        uint256 y,
        uint256 denominator,
        Rounding rounding
    ) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10**64) {
                value /= 10**64;
                result += 64;
            }
            if (value >= 10**32) {
                value /= 10**32;
                result += 32;
            }
            if (value >= 10**16) {
                value /= 10**16;
                result += 16;
            }
            if (value >= 10**8) {
                value /= 10**8;
                result += 8;
            }
            if (value >= 10**4) {
                value /= 10**4;
                result += 4;
            }
            if (value >= 10**2) {
                value /= 10**2;
                result += 2;
            }
            if (value >= 10**1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0);
        }
    }
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

import "./CallOptionalReturn.sol";

contract ApprovalHelper is CallOptionalReturn {

    bytes4 constant approveSelector = IERC20
        .approve
        .selector;

    /**
     * @dev
     * Allows to execute safe approve for a token
     */
    function _safeApprove(
        address _token,
        address _spender,
        uint256 _value
    )
        internal
    {
        _callOptionalReturn(
            _token,
            abi.encodeWithSelector(
                approveSelector,
                _spender,
                _value
            )
        );
    }
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

import "./CallOptionalReturn.sol";

contract TransferHelper is CallOptionalReturn {

    bytes4 constant transferSelector = IERC20
        .transfer
        .selector;

    bytes4 constant transferFromSelector = IERC20
        .transferFrom
        .selector;

    /**
     * @dev
     * Allows to execute safe transfer for a token
     */
    function _safeTransfer(
        address _token,
        address _to,
        uint256 _value
    )
        internal
    {
        _callOptionalReturn(
            _token,
            abi.encodeWithSelector(
                transferSelector,
                _to,
                _value
            )
        );
    }

    /**
     * @dev
     * Allows to execute safe transferFrom for a token
     */
    function _safeTransferFrom(
        address _token,
        address _from,
        address _to,
        uint256 _value
    )
        internal
    {
        _callOptionalReturn(
            _token,
            abi.encodeWithSelector(
                transferFromSelector,
                _from,
                _to,
                _value
            )
        );
    }
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

import "../InterfaceHub/IERC20.sol";

interface IBalancerVault {

    /**
     * @dev Performs a 'flash loan', sending tokens to `recipient`, executing the `receiveFlashLoan` hook on it,
     * and then reverting unless the tokens plus a proportional protocol fee have been returned.
     *
     * The `tokens` and `amounts` arrays must have the same length, and each entry in these indicates the loan amount
     * for each token contract. `tokens` must be sorted in ascending order.
     *
     * The 'userData' field is ignored by the Vault, and forwarded as-is to `recipient` as part of the
     * `receiveFlashLoan` call.
     *
     * Emits `FlashLoan` events.
     */
    function flashLoan(
        IFlashLoanRecipient _recipient,
        IERC20[] memory _tokens,
        uint256[] memory _amounts,
        bytes memory _userData
    )
        external;
}

interface IFlashLoanRecipient {

    /**
     * @dev When `flashLoan` is called on the Vault, it invokes the `receiveFlashLoan` hook on the recipient.
     *
     * At the time of the call, the Vault will have transferred `amounts` for `tokens` to the recipient. Before this
     * call returns, the recipient must have transferred `amounts` plus `feeAmounts` for each token back to the
     * Vault, or else the entire flash loan will revert.
     *
     * `userData` is the same value passed in the `IVault.flashLoan` call.
     */
    function receiveFlashLoan(
        IERC20[] memory _tokens,
        uint256[] memory _amounts,
        uint256[] memory _feeAmounts,
        bytes memory _userData
    )
        external;
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

interface IWiseOracleHub {

    function latestResolver(
        address _tokenAddress
    )
        external
        view
        returns (uint256);

    function getTokensFromUSD(
        address _tokenAddress,
        uint256 _usdValue
    )
        external
        view
        returns (uint256);

    function getTokensInUSD(
        address _tokenAddress,
        uint256 _amount
    )
        external
        view
        returns (uint256);

    function chainLinkIsDead(
        address _tokenAddress
    )
        external
        view
        returns (bool);

    function decimalsUSD()
        external
        pure
        returns (uint8);

    function previousValue(
        address _tokenAddress
    )
        external
        view
        returns (uint256);

    function setPreviousValue(
        address _tokenAddress
    )
        external;

    function addOracle(
        address _tokenAddress,
        address _priceFeedAddress,
        address[] memory _underlyingFeedTokens
    )
        external;

    function recalibrate(
        address _tokenAddress
    )
        external;

    function recalibratePreview(
        address _tokenAddress
    )
        external
        view
        returns (uint256);
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

interface IPositionNFTs {

    function ownerOf(
        uint256 _nftId
    )
        external
        view
        returns (address);

    function getOwner(
        uint256 _nftId
    )
        external
        view
        returns (address);


    function totalSupply()
        external
        view
        returns (uint256);

    function reserved(
        address _owner
    )
        external
        view
        returns (uint256);

    function reservePosition()
        external;

    function mintPosition()
        external;

    function tokenOfOwnerByIndex(
        address _owner,
        uint256 _index
    )
        external
        view
        returns (uint256);

    function mintPositionForUser(
        address _user
    )
        external
        returns (uint256);

    function reservePositionForUser(
        address _user
    )
        external
        returns (uint256);

    function getApproved(
        uint256 _nftId
    )
        external
        returns (address);

    function approve(
        address _to,
        uint256 _nftId
    )
        external;
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

struct CurveSwapStructToken {
    uint256 curvePoolTokenIndexFrom;
    uint256 curvePoolTokenIndexTo;
    uint256 curveMetaPoolTokenIndexFrom;
    uint256 curveMetaPoolTokenIndexTo;
}

struct CurveSwapStructData {
    address curvePool;
    address curveMetaPool;
    bytes swapBytesPool;
    bytes swapBytesMeta;
}

interface IWiseSecurity {

    function overallUSDBorrowHeartbeat(
        uint256 _nftId
    )
        external
        view
        returns (uint256 buffer);

    function checkBadDebt(
        uint256 _nftId
    )
        external;

    function getFullCollateralUSD(
        uint256 _nftId,
        address _poolToken
    )
        external
        view
        returns (uint256);

    function checksLiquidation(
        uint256 _nftIdLiquidate,
        address _tokenToPayback,
        uint256 _shareAmountToPay
    )
        external
        view;

    function getPositionBorrowAmount(
        uint256 _nftId,
        address _poolToken
    )
        external
        view
        returns (uint256);

    function getPositionLendingAmount(
        uint256 _nftId,
        address _poolToken
    )
        external
        view
        returns (uint256);

    function getLiveDebtRatioNormalPool(
        uint256 _nftId
    )
        external
        view
        returns (uint256);

    function overallUSDCollateralsBare(
        uint256 _nftId
    )
        external
        view
        returns (uint256 amount);

    function FEE_MANAGER()
        external
        returns (address);

    function AAVE_HUB()
        external
        returns (address);

    function curveSecurityCheck(
        address _poolAddress
    )
        external;

    function prepareCurvePools(
        address _poolToken,
        CurveSwapStructData memory _curveSwapStructData,
        CurveSwapStructToken memory _curveSwapStructToken
    )
        external;

    function checksWithdraw(
        uint256 _nftId,
        address _caller,
        address _poolToken,
        uint256 _amount
    )
        external
        view;

    function checksBorrow(
        uint256 _nftId,
        address _caller,
        address _poolToken,
        uint256 _amount
    )
        external
        view;

    function checksSolelyWithdraw(
        uint256 _nftId,
        address _caller,
        address _poolToken,
        uint256 _amount
    )
        external
        view;

    function checkOwnerPosition(
        uint256 _nftId,
        address _caller
    )
        external
        view;

    function checksCollateralizeDeposit(
        uint256 _nftIdCaller,
        address _caller,
        address _poolAddress
    )
        external
        view;

    function calculateWishPercentage(
        uint256 _nftId,
        address _receiveToken,
        uint256 _paybackUSD,
        uint256 _maxFeeUSD,
        uint256 _baseRewardLiquidation
    )
        external
        view
        returns (uint256);

    function checksDecollateralizeDeposit(
        uint256 _nftIdCaller,
        address _poolToken
    )
        external
        view;

    function checkBorrowLimit(
        uint256 _nftId,
        address _poolToken,
        uint256 _amount
    )
        external
        view;

    function checkPositionLocked(
        uint256 _nftId,
        address _caller
    )
        external
        view;

    function checkPaybackLendingShares(
        uint256 _nftIdReceiver,
        uint256 _nftIdCaller,
        address _caller,
        address _poolToken,
        uint256 _amount
    )
        external
        view;

    function maxFeeUSD()
        external
        view
        returns (uint256);

    function maxFeeFarmUSD()
        external
        view
        returns (uint256);

    function baseRewardLiquidation()
        external
        view
        returns (uint256);

    function baseRewardLiquidationFarm()
        external
        view
        returns (uint256);

    function checksRegister(
        uint256 _nftId,
        address _caller
    )
        external
        view;

    function getLendingRate(
        address _poolToken
    )
        external
        view
        returns (uint256);
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

struct GlobalPoolEntry {
    uint256 totalPool;
    uint256 utilization;
    uint256 totalBareToken;
    uint256 poolFee;
}

struct BorrowPoolEntry {
    bool allowBorrow;
    uint256 pseudoTotalBorrowAmount;
    uint256 totalBorrowShares;
    uint256 borrowRate;
}

struct LendingPoolEntry {
    uint256 pseudoTotalPool;
    uint256 totalDepositShares;
    uint256 collateralFactor;
}

struct PoolEntry {
    uint256 totalPool;
    uint256 utilization;
    uint256 totalBareToken;
    uint256 poolFee;
}

struct BorrowRatesEntry {
    uint256 pole;
    uint256 deltaPole;
    uint256 minPole;
    uint256 maxPole;
    uint256 multiplicativeFactor;
}

interface IWiseLending {

    function borrowRatesData(
        address _pooToken
    )
        external
        view
        returns (BorrowRatesEntry memory);

    function newBorrowRate(
        address _poolToken
    )
        external;

    function calculateBorrowShares(
        address _poolToken,
        uint256 _amount
    )
        external
        view
        returns (uint256);

    function borrowPoolData(
        address _poolToken
    )
        external
        view
        returns (BorrowPoolEntry memory);

    function lendingPoolData(
        address _poolToken
    )
        external
        view
        returns (LendingPoolEntry memory);

    function getPositionBorrowShares(
        uint256 _nftId,
        address _poolToken
    )
        external
        view
        returns (uint256);

    function getTimeStamp(
        address _poolToken
    )
        external
        view
        returns (uint256);

    function getPureCollateralAmount(
        uint256 _nftId,
        address _poolToken
    )
        external
        view
        returns (uint256);

    function isDecollteralized(
        uint256 _nftId,
        address _poolToken
    )
        external
        view
        returns (bool);

    function veryfiedIsolationPool(
        address _poolAddress
    )
        external
        view
        returns (bool);

    function positionLocked(
        uint256 _nftId
    )
        external
        view
        returns (bool);

    function getTotalBareToken(
        address _poolToken
    )
        external
        view
        returns (uint256);

    function maxDepositValueToken(
        address _poolToken
    )
        external
        view
        returns (uint256);

    function master()
        external
        view
        returns (address);

    function WETH_ADDRESS()
        external
        view
        returns (address);

    function WISE_ORACLE()
        external
        view
        returns (address);

    function POSITION_NFT()
        external
        view
        returns (address);

    function FEE_MANAGER()
        external
        view
        returns (address);

    function WISE_SECURITY()
        external
        view
        returns (address);

    function lastUpdated(
        address _poolAddress
    )
        external
        view
        returns (uint256);

    function isolationPoolRegistered(
        uint256 _nftId,
        address _isolationPool
    )
        external
        view
        returns (bool);

    function calculateLendingShares(
        address _poolToken,
        uint256 _amount
    )
        external
        view
        returns (uint256);

    function positionPureCollateralAmount(
        uint256 _nftId,
        address _poolToken
    )
        external
        returns (uint256);

    function getTotalPool(
        address _poolToken
    )
        external
        view
        returns (uint256);

    function depositExactAmount(
        uint256 _nftId,
        address _poolToken,
        uint256 _amount
    )
        external
        returns (uint256);

    function withdrawOnBehalfExactAmount(
        uint256 _nftId,
        address _poolToken,
        uint256 _amount
    )
        external
        returns (uint256);

    function syncManually(
        address _poolToken
    )
        external;

    function withdrawOnBehalfExactShares(
        uint256 _nftId,
        address _poolToken,
        uint256 _shares
    )
        external
        returns (uint256);

    function borrowOnBehalfExactAmount(
        uint256 _nftId,
        address _poolToken,
        uint256 _amount
    )
        external
        returns (uint256);

    function borrowExactAmount(
        uint256 _nftId,
        address _poolToken,
        uint256 _amount
    )
        external
        returns (uint256);

    function solelyDeposit(
        uint256 _nftId,
        address _poolToken,
        uint256 _amount
    )
        external;

    function solelyWithdrawOnBehalf(
        uint256 _nftId,
        address _poolToken,
        uint256 _amount
    )
        external;

    function paybackExactAmount(
        uint256 _nftId,
        address _poolToken,
        uint256 _amount
    )
        external
        returns (uint256);

    function paybackExactShares(
        uint256 _nftId,
        address _poolToken,
        uint256 _shares
    )
        external
        returns (uint256);

    function setPoolFee(
        address _poolToken,
        uint256 _newFee
    )
        external;

    function getPositionLendingShares(
        uint256 _nftId,
        address _poolToken
    )
        external
        view
        returns (uint256);

    function withdrawExactShares(
        uint256 _nftId,
        address _poolToken,
        uint256 _shares
    )
        external
        returns (uint256);

    function poolTokenAddresses()
        external
        returns (address[] memory);

    function corePaybackFeeManager(
        address _poolToken,
        uint256 _nftId,
        uint256 _amount,
        uint256 _shares
    )
        external;

    function coreLiquidationIsolationPools(
        uint256 _nftId,
        uint256 _nftIdLiquidator,
        address _caller,
        address _receiver,
        address _tokenToPayback,
        address _tokenToRecieve,
        uint256 _paybackAmount,
        uint256 _shareAmountToPay
    )
        external
        returns (uint256 reveiveAmount);

    function preparePool(
        address _poolToken
    )
        external;

    function getPositionBorrowTokenLength(
        uint256 _nftId
    )
        external
        view
        returns (uint256);

    function getPositionBorrowTokenByIndex(
        uint256 _nftId,
        uint256 _index
    )
        external
        view
        returns (address);

    function getPositionLendingTokenByIndex(
        uint256 _nftId,
        uint256 _index
    )
        external
        view
        returns (address);

    function getPositionLendingTokenLength(
        uint256 _nftId
    )
        external
        view
        returns (uint256);

    function globalPoolData(
        address _poolToken
    )
        external
        view
        returns (GlobalPoolEntry memory);


    function getGlobalBorrowAmount(
        address _token
    )
        external
        view
        returns (uint256);

    function getPseudoTotalBorrowAmount(
        address _token
    )
        external
        view
        returns (uint256);

    function getInitialBorrowAmountUser(
        address _user,
        address _token
    )
        external
        view
        returns (uint256);

    function getPseudoTotalPool(
        address _token
    )
        external
        view
        returns (uint256);

    function getInitialDepositAmountUser(
        address _user,
        address _token
    )
        external
        view
        returns (uint256);

    function getGlobalDepositAmount(
        address _token
    )
        external
        view
        returns (uint256);

    function paybackAmount(
        address _token,
        uint256 _shares
    )
        external
        view
        returns (uint256);

    function getPositionLendingShares(
        address _user,
        address _token
    )
        external
        view
        returns (uint256);

    function cashoutAmount(
        address _token,
        uint256 _shares
    )
        external
        view
        returns (uint256);

    function getTotalDepositShares(
        address _token
    )
        external
        view
        returns (uint256);

    function getTotalBorrowShares(
        address _token
    )
        external
        view
        returns (uint256);

    function checkPositionLocked(
        uint256 _nftId,
        address _caller
    )
        external
        view;

    function checkDeposit(
        uint256 _nftId,
        address _caller,
        address _poolToken,
        uint256 _amount
    )
        external
        view;

    function setRegistrationIsolationPool(
        uint256 _nftId,
        bool _state
    )
        external;
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

interface IAaveHub {

    function AAVE_ADDRESS()
        external
        view
        returns (address);

    function aaveTokenAddress(
        address _underlyingToken
    )
        external
        view
        returns (address);

    function borrowExactAmount(
        uint256 _nftId,
        address _underlyingAsset,
        uint256 _borrowAmount
    )
        external
        returns (uint256);

    function paybackExactShares(
        uint256 _nftId,
        address _underlyingAsset,
        uint256 _shares
    )
        external
        returns (uint256);

    function paybackExactAmount(
        uint256 _nftId,
        address _underlyingAsset,
        uint256 _shares
    )
        external
        returns (uint256);
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

interface IWstETH {

    function wrap(
        uint256 _stETHAmount
    )
        external
        returns (uint256);

    function unwrap(
        uint256 _wstETHAmount
    )
        external
        returns (uint256);

    function getStETHByWstETH(
        uint256 _wstETHAmount
    )
        external
        view
        returns (uint256);

    function decimals()
        external
        view
        returns (uint8);

    function balanceOf(
        address _account
    )
        external
        view
        returns (uint256);
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

interface ICurve {

    function add_liquidity(
        address _pool,
        uint256[4] memory _depositAmounts,
        uint256 _minOutAmount
    )
        external
        returns (uint256);

    function balanceOf(
        address _userAddress
    )
        external
        view
        returns (uint256);

    function get_dy(
        int128 i,
        int128 j,
        uint256 dx
    )
        external
        view
        returns (uint256);

    function get_dy_underlying(
        int128 i,
        int128 j,
        uint256 dx
    )
        external
        view
        returns (uint256);

    function exchange(
        int128 fromIndex,
        int128 toIndex,
        uint256 exactAmountFrom,
        uint256 minReceiveAmount
    )
        external
        returns (uint256);

    function exchange_underlying(
        int128 i,
        int128 j,
        uint256 dx,
        uint256 min_dy
    )
        external;

    function remove_liquidity(
        address _pool,
        uint256 _burnAmount,
        uint256[4] memory coins
    )
        external;

    function remove_liquidity_one_coin(
        address _addy,
        uint256 _burnAmount,
        int128 _i,
        uint256 _minReceived
    )
        external;

    function coins(
        uint256 arg0
    )
        external
        view
        returns (address);

    function decimals()
        external
        view
        returns (uint8);

    function totalSupply()
        external
        view
        returns (uint256);

    function balances(
        uint256 arg0
    )
        external
        view
        returns (uint256);

    function approve(
        address _spender,
        uint256 _amount
    )
        external
        returns (bool);
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

interface IStETH {

    function submit(
        address _referral
    )
        external
        payable
        returns (uint256);

    function balanceOf(
        address _account
    )
        external
        view
        returns (uint256);

    function getPooledEthByShares(
        uint256 _sharesAmount
    )
        external
        view
        returns (uint256);
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

interface IAave {

    struct ReserveData {

        // Stores the reserve configuration
        ReserveConfigurationMap configuration;

        // Liquidity index. Expressed in ray
        uint128 liquidityIndex;

        // Current supply rate. Expressed in ray
        uint128 currentLiquidityRate;

        // Variable borrow index. Expressed in ray
        uint128 variableBorrowIndex;

        // Current variable borrow rate. Expressed in ray
        uint128 currentVariableBorrowRate;

        // Current stable borrow rate. Expressed in ray
        uint128 currentStableBorrowRate;

        // Timestamp of last update
        uint40 lastUpdateTimestamp;

        // Id of the reserve.
        uint16 id;

        // aToken address
        address aTokenAddress;

        // stableDebtToken address
        address stableDebtTokenAddress;

        // VariableDebtToken address
        address variableDebtTokenAddress;

        // Address of the interest rate strategy
        address interestRateStrategyAddress;

        // Current treasury balance, scaled
        uint128 accruedToTreasury;

        // Outstanding unbacked aTokens minted through the bridging feature
        uint128 unbacked;

        // Outstanding debt borrowed against this asset in isolation mode
        uint128 isolationModeTotalDebt;
    }

    struct ReserveConfigurationMap {
        uint256 data;
    }

    function deposit(
        address _token,
        uint256 _amount,
        address _owner,
        uint16 _referralCode
    )
        external;

    function withdraw(
        address _token,
        uint256 _amount,
        address _recipient
    )
        external
        returns (uint256);

    function getReserveData(
        address asset
    )
        external
        view
        returns (ReserveData memory);

}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

import "./IERC20.sol";

interface IWETH is IERC20 {

    function deposit()
        external
        payable;

    function withdraw(
        uint256
    )
        external;
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

import "../InterfaceHub/IERC20.sol";

error CallFailed();

contract CallOptionalReturn {

    /**
     * @dev
     * Helper function to do low-level call
     */
    function _callOptionalReturn(
        address token,
        bytes memory data
    )
        internal
        returns (bool call)
    {
        (
            bool success,
            bytes memory returndata
        ) = token.call(
            data
        );

        bool results = returndata.length == 0 || abi.decode(
            returndata,
            (bool)
        );

        call = success
            && results
            && token.code.length > 0;

        if (call == false) {
            revert CallFailed();
        }
    }
}

// SPDX-License-Identifier: -- WISE --

pragma solidity =0.8.21;

interface IERC20 {

    function totalSupply()
        external
        view
        returns (uint256);

    function balanceOf(
        address _account
    )
        external
        view
        returns (uint256);

    function transferFrom(
        address _sender,
        address _recipient,
        uint256 _amount
    )
        external
        returns (bool);

    function transfer(
        address _recipient,
        uint256 _amount
    )
        external
        returns (bool);

    function allowance(
        address owner,
        address spender
    )
        external
        view
        returns (uint256);

    function approve(
        address _spender,
        uint256 _amount
    )
        external
        returns (bool);

    function decimals()
        external
        view
        returns (uint8);

    event Transfer(
        address indexed from,
        address indexed to,
        uint256 value
    );

    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );

    event  Deposit(
        address indexed dst,
        uint wad
    );

    event  Withdrawal(
        address indexed src,
        uint wad
    );
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

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-----Decoded View---------------
Arg [0] : _name (string): WisePowerFarm-wstETH
Arg [1] : _symbol (string): WPF-wstETH
Arg [2] : _initBaseURI (string): https://backend.liquidnfts.com
Arg [3] : _wiseLendingAddress (address): 0x84524bAa1951247b3A2617A843e6eCe915Bb9674
Arg [4] : _collateralFactor (uint256): 950000000000000000

-----Encoded View---------------
11 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000e0
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000120
Arg [3] : 00000000000000000000000084524baa1951247b3a2617a843e6ece915bb9674
Arg [4] : 0000000000000000000000000000000000000000000000000d2f13f7789f0000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000014
Arg [6] : 57697365506f7765724661726d2d777374455448000000000000000000000000
Arg [7] : 000000000000000000000000000000000000000000000000000000000000000a
Arg [8] : 5750462d77737445544800000000000000000000000000000000000000000000
Arg [9] : 000000000000000000000000000000000000000000000000000000000000001e
Arg [10] : 68747470733a2f2f6261636b656e642e6c69717569646e6674732e636f6d0000