Cryo Explorer Ethereum Mainnet

// SPDX-License-Identifier: MIT
pragma solidity 0.8.21;

import {TransferHelper} from "@uniswap/v3-periphery/contracts/libraries/TransferHelper.sol";

contract AssetsVault {
    address public stoneVault;
    address public strategyController;

    modifier onlyPermit() {
        require(
            stoneVault == msg.sender || strategyController == msg.sender,
            "not permit"
        );
        _;
    }

    constructor(address _stoneVault, address _strategyController) {
        require(
            _stoneVault != address(0) && _strategyController != address(0),
            "ZERO ADDRESS"
        );
        stoneVault = _stoneVault;
        strategyController = _strategyController;
    }

    function deposit() external payable {
        require(msg.value != 0, "too small");
    }

    function withdraw(address _to, uint256 _amount) external onlyPermit {
        TransferHelper.safeTransferETH(_to, _amount);
    }

    function setNewVault(address _vault) external onlyPermit {
        stoneVault = _vault;
    }

    function getBalance() external view returns (uint256 amount) {
        amount = address(this).balance;
    }

    receive() external payable {}
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.21;

interface IWBETH {
    function deposit(address referral) external payable;

    function exchangeRate() external view returns (uint256 _exchangeRate);

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

    function requestWithdrawEth(uint256 wbethAmount) external;
}

// 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 v4.9.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.21;

import {StrategyController} from "../strategies/StrategyController.sol";

abstract contract Strategy {
    address payable public immutable controller;

    address public governance;

    uint256 public latestUpdateTime;
    uint256 public bufferTime = 12;

    string public name;

    modifier onlyGovernance() {
        require(governance == msg.sender, "not governace");
        _;
    }

    modifier notAtSameBlock() {
        require(
            latestUpdateTime + bufferTime <= block.timestamp,
            "at the same block"
        );
        _;
    }

    event TransferGovernance(address oldOwner, address newOwner);

    constructor(address payable _controller, string memory _name) {
        require(_controller != address(0), "ZERO ADDRESS");

        governance = msg.sender;
        controller = _controller;
        name = _name;
    }

    modifier onlyController() {
        require(controller == msg.sender, "not controller");
        _;
    }

    function deposit() public payable virtual onlyController notAtSameBlock {}

    function withdraw(
        uint256 _amount
    )
        public
        virtual
        onlyController
        notAtSameBlock
        returns (uint256 actualAmount)
    {}

    function instantWithdraw(
        uint256 _amount
    )
        public
        virtual
        onlyController
        notAtSameBlock
        returns (uint256 actualAmount)
    {}

    function clear() public virtual onlyController returns (uint256 amount) {}

    function execPendingRequest(
        uint256 _amount
    ) public virtual returns (uint256 amount) {}

    function getAllValue() public virtual returns (uint256 value) {}

    function getPendingValue() public virtual returns (uint256 value) {}

    function getInvestedValue() public virtual returns (uint256 value) {}

    function checkPendingStatus()
        public
        virtual
        returns (uint256 pending, uint256 executable)
    {}

    function setGovernance(address governance_) external onlyGovernance {
        emit TransferGovernance(governance, governance_);
        governance = governance_;
    }

    function setBufferTime(uint256 _time) external onlyGovernance {
        bufferTime = _time;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.21;

import {StrategyController} from "../strategies/StrategyController.sol";
import {Ownable2Step} from "@openzeppelin/contracts/access/Ownable2Step.sol";

abstract contract StrategyV2 is Ownable2Step {
    address payable public immutable controller;

    uint256 public latestUpdateTime;
    uint256 public bufferTime;

    string public name;

    modifier notAtSameBlock() {
        require(
            latestUpdateTime + bufferTime <= block.timestamp,
            "at the same block"
        );
        _;
    }

    constructor(address payable _controller, string memory _name) {
        require(_controller != address(0), "ZERO ADDRESS");

        controller = _controller;
        name = _name;
    }

    modifier onlyController() {
        require(controller == msg.sender, "not controller");
        _;
    }

    function deposit() public payable virtual onlyController notAtSameBlock {}

    function withdraw(
        uint256 _amount
    )
        public
        virtual
        onlyController
        notAtSameBlock
        returns (uint256 actualAmount)
    {}

    function instantWithdraw(
        uint256 _amount
    )
        public
        virtual
        onlyController
        notAtSameBlock
        returns (uint256 actualAmount)
    {}

    function clear() public virtual onlyController returns (uint256 amount) {}

    function getAllValue() public virtual returns (uint256 value) {}

    function getPendingValue() public virtual returns (uint256 value) {}

    function getInvestedValue() public virtual returns (uint256 value) {}

    function setBufferTime(uint256 _time) external onlyOwner {
        bufferTime = _time;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.21;

interface ICollateral {
    function deposit(
        address recipient,
        uint256 amount
    ) external returns (uint256);

    function withdraw(address recipient, uint256 amount) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable2Step.sol)

pragma solidity ^0.8.0;

import "./Ownable.sol";

/**
 * @dev Contract module which provides access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership} and {acceptOwnership}.
 *
 * This module is used through inheritance. It will make available all functions
 * from parent (Ownable).
 */
abstract contract Ownable2Step is Ownable {
    address private _pendingOwner;

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

    /**
     * @dev Returns the address of the pending owner.
     */
    function pendingOwner() public view virtual returns (address) {
        return _pendingOwner;
    }

    /**
     * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual override onlyOwner {
        _pendingOwner = newOwner;
        emit OwnershipTransferStarted(owner(), newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner.
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual override {
        delete _pendingOwner;
        super._transferOwnership(newOwner);
    }

    /**
     * @dev The new owner accepts the ownership transfer.
     */
    function acceptOwnership() public virtual {
        address sender = _msgSender();
        require(pendingOwner() == sender, "Ownable2Step: caller is not the new owner");
        _transferOwnership(sender);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.21;

interface IUnwrapTokenV1ETH {
    struct WithdrawRequest {
        address recipient; // user who withdraw
        uint256 wbethAmount; //WBETH
        uint256 ethAmount; //ETH
        uint256 triggerTime; //user trigger time
        uint256 claimTime; //user claim time
        bool allocated; //is it allocated
    }

    function lockTime() external view returns (uint256);

    function getUserWithdrawRequests(
        address _recipient
    ) external view returns (WithdrawRequest[] memory);

    function getWithdrawRequests(
        uint256 _startIndex
    ) external view returns (WithdrawRequest[] memory);

    function claimWithdraw(uint256 _index) external;

    // testing
    function getNeedRechargeEthAmount() external view returns (uint256);

    function allocate(uint256 _maxAllocateNum) external returns (uint256);

    function rechargeFromRechargeAddress() external payable;

    function startAllocatedEthIndex() external view returns (uint256);

    function nextIndex() external view returns (uint256);

    function rechargeAddress() external view returns (address);

    function operatorAddress() external view returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.21;

import {EnumerableSet} from "@openzeppelin/contracts/utils/structs/EnumerableSet.sol";
import {TransferHelper} from "@uniswap/v3-periphery/contracts/libraries/TransferHelper.sol";

import {Strategy} from "./Strategy.sol";
import {AssetsVault} from "../AssetsVault.sol";

contract StrategyController {
    using EnumerableSet for EnumerableSet.AddressSet;

    uint256 internal constant ONE_HUNDRED_PERCENT = 1e6;

    address public stoneVault;
    address payable public immutable assetsVault;

    EnumerableSet.AddressSet private strategies;

    mapping(address => uint256) public ratios;

    struct StrategyDiff {
        address strategy;
        bool isDeposit;
        uint256 amount;
    }

    modifier onlyVault() {
        require(stoneVault == msg.sender, "not vault");
        _;
    }

    constructor(
        address payable _assetsVault,
        address[] memory _strategies,
        uint256[] memory _ratios
    ) {
        require(_assetsVault != address(0), "ZERO ADDRESS");

        uint256 length = _strategies.length;
        for (uint256 i; i < length; i++) {
            require(_strategies[i] != address(0), "ZERO ADDRESS");
        }

        stoneVault = msg.sender;
        assetsVault = _assetsVault;

        _initStrategies(_strategies, _ratios);
    }

    function forceWithdraw(
        uint256 _amount
    ) external onlyVault returns (uint256 actualAmount) {
        uint256 balanceBeforeRepay = address(this).balance;

        if (balanceBeforeRepay >= _amount) {
            _repayToVault();

            actualAmount = _amount;
        } else {
            actualAmount =
                _forceWithdraw(_amount - balanceBeforeRepay) +
                balanceBeforeRepay;
        }
    }

    function setStrategies(
        address[] memory _strategies,
        uint256[] memory _ratios
    ) external onlyVault {
        _setStrategies(_strategies, _ratios);
    }

    function addStrategy(address _strategy) external onlyVault {
        require(!strategies.contains(_strategy), "already exist");

        strategies.add(_strategy);
    }

    function rebaseStrategies(
        uint256 _in,
        uint256 _out
    ) external payable onlyVault {
        _rebase(_in, _out);
    }

    function destroyStrategy(address _strategy) external onlyVault {
        _destoryStrategy(_strategy);
    }

    function _rebase(uint256 _in, uint256 _out) internal {
        require(_in == 0 || _out == 0, "only deposit or withdraw");

        if (_in != 0) {
            AssetsVault(assetsVault).withdraw(address(this), _in);
        }
        uint256 total = getAllStrategyValidValue();
        if (total < _out) {
            total = 0;
        } else {
            total = total + _in - _out;
        }

        uint256 length = strategies.length();
        StrategyDiff[] memory diffs = new StrategyDiff[](length);
        uint256 head;
        uint256 tail = length - 1;
        for (uint i; i < length; i++) {
            address strategy = strategies.at(i);
            if (ratios[strategy] == 0) {
                _clearStrategy(strategy, true);
                continue;
            }
            uint256 newPosition = (total * ratios[strategy]) /
                ONE_HUNDRED_PERCENT;
            uint256 position = getStrategyValidValue(strategy);

            if (newPosition < position) {
                diffs[head] = StrategyDiff(
                    strategy,
                    false,
                    position - newPosition
                );
                head++;
            } else if (newPosition > position) {
                diffs[tail] = StrategyDiff(
                    strategy,
                    true,
                    newPosition - position
                );
                if (tail != 0) {
                    tail--;
                }
            }
        }

        length = diffs.length;
        for (uint256 i; i < length; i++) {
            StrategyDiff memory diff = diffs[i];

            if (diff.amount == 0) {
                continue;
            }

            if (diff.isDeposit) {
                if (address(this).balance < diff.amount) {
                    diff.amount = address(this).balance;
                }
                _depositToStrategy(diff.strategy, diff.amount);
            } else {
                _withdrawFromStrategy(diff.strategy, diff.amount);
            }
        }

        _repayToVault();
    }

    function _repayToVault() internal {
        if (address(this).balance != 0) {
            TransferHelper.safeTransferETH(assetsVault, address(this).balance);
        }
    }

    function _depositToStrategy(address _strategy, uint256 _amount) internal {
        Strategy(_strategy).deposit{value: _amount}();
    }

    function _withdrawFromStrategy(
        address _strategy,
        uint256 _amount
    ) internal {
        Strategy(_strategy).withdraw(_amount);
    }

    function _forceWithdraw(
        uint256 _amount
    ) internal returns (uint256 actualAmount) {
        uint256 length = strategies.length();

        uint256 allRatios;
        for (uint i; i < length; i++) {
            address strategy = strategies.at(i);
            allRatios += ratios[strategy];
        }

        for (uint i; i < length; i++) {
            address strategy = strategies.at(i);

            uint256 withAmount = (_amount * ratios[strategy]) / allRatios;

            if (withAmount != 0) {
                actualAmount =
                    Strategy(strategy).instantWithdraw(withAmount) +
                    actualAmount;
            }
        }

        _repayToVault();
    }

    function getStrategyValue(
        address _strategy
    ) public returns (uint256 _value) {
        return Strategy(_strategy).getAllValue();
    }

    function getStrategyValidValue(
        address _strategy
    ) public returns (uint256 _value) {
        return Strategy(_strategy).getInvestedValue();
    }

    function getStrategyPendingValue(
        address _strategy
    ) public returns (uint256 _value) {
        return Strategy(_strategy).getPendingValue();
    }

    function getAllStrategiesValue() public returns (uint256 _value) {
        uint256 length = strategies.length();
        for (uint i; i < length; i++) {
            _value = _value + getStrategyValue(strategies.at(i));
        }
    }

    function getAllStrategyValidValue() public returns (uint256 _value) {
        uint256 length = strategies.length();
        for (uint i; i < length; i++) {
            _value = _value + getStrategyValidValue(strategies.at(i));
        }
    }

    function getAllStrategyPendingValue() public returns (uint256 _value) {
        uint256 length = strategies.length();
        for (uint i; i < length; i++) {
            _value = _value + getStrategyPendingValue(strategies.at(i));
        }
    }

    function getStrategies()
        public
        view
        returns (address[] memory addrs, uint256[] memory portions)
    {
        uint256 length = strategies.length();

        addrs = new address[](length);
        portions = new uint256[](length);

        for (uint256 i; i < length; i++) {
            address addr = strategies.at(i);
            addrs[i] = addr;
            portions[i] = ratios[addr];
        }
    }

    function _initStrategies(
        address[] memory _strategies,
        uint256[] memory _ratios
    ) internal {
        require(_strategies.length == _ratios.length, "invalid length");

        uint256 totalRatio;
        uint256 length = _strategies.length;
        for (uint i; i < length; i++) {
            strategies.add(_strategies[i]);
            ratios[_strategies[i]] = _ratios[i];
            totalRatio = totalRatio + _ratios[i];
        }
        require(totalRatio <= ONE_HUNDRED_PERCENT, "exceed 100%");
    }

    function _setStrategies(
        address[] memory _strategies,
        uint256[] memory _ratios
    ) internal {
        uint256 length = _strategies.length;
        require(length == _ratios.length, "invalid length");

        uint256 oldLength = strategies.length();
        for (uint i; i < oldLength; i++) {
            ratios[strategies.at(i)] = 0;
        }
        uint256 totalRatio;
        for (uint i; i < length; i++) {
            require(
                Strategy(_strategies[i]).controller() == address(this),
                "controller mismatch"
            );
            strategies.add(_strategies[i]);
            ratios[_strategies[i]] = _ratios[i];
            totalRatio = totalRatio + _ratios[i];
        }
        require(totalRatio <= ONE_HUNDRED_PERCENT, "exceed 100%");
    }

    function clearStrategy(address _strategy) public onlyVault {
        _clearStrategy(_strategy, false);
    }

    function _clearStrategy(address _strategy, bool _isRebase) internal {
        Strategy(_strategy).clear();

        if (!_isRebase) {
            _repayToVault();
        }
    }

    function _destoryStrategy(address _strategy) internal {
        require(_couldDestroyStrategy(_strategy), "still active");

        strategies.remove(_strategy);

        _repayToVault();
    }

    function _couldDestroyStrategy(
        address _strategy
    ) internal returns (bool status) {
        return
            ratios[_strategy] == 0 && Strategy(_strategy).getAllValue() < 1e4;
    }

    function setNewVault(address _vault) external onlyVault {
        stoneVault = _vault;
    }

    receive() external payable {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/structs/EnumerableSet.sol)
// This file was procedurally generated from scripts/generate/templates/EnumerableSet.js.

pragma solidity ^0.8.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```solidity
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 *
 * [WARNING]
 * ====
 * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure
 * unusable.
 * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.
 *
 * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an
 * array of EnumerableSet.
 * ====
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;
        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping(bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) {
            // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            if (lastIndex != toDeleteIndex) {
                bytes32 lastValue = set._values[lastIndex];

                // Move the last value to the index where the value to delete is
                set._values[toDeleteIndex] = lastValue;
                // Update the index for the moved value
                set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex
            }

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        return set._values[index];
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function _values(Set storage set) private view returns (bytes32[] memory) {
        return set._values;
    }

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
        return _at(set._inner, index);
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
        bytes32[] memory store = _values(set._inner);
        bytes32[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(AddressSet storage set) internal view returns (address[] memory) {
        bytes32[] memory store = _values(set._inner);
        address[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }

    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(UintSet storage set) internal view returns (uint256[] memory) {
        bytes32[] memory store = _values(set._inner);
        uint256[] memory result;

        /// @solidity memory-safe-assembly
        assembly {
            result := store
        }

        return result;
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.6.0;

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

library TransferHelper {
    /// @notice Transfers tokens from the targeted address to the given destination
    /// @notice Errors with 'STF' if transfer fails
    /// @param token The contract address of the token to be transferred
    /// @param from The originating address from which the tokens will be transferred
    /// @param to The destination address of the transfer
    /// @param value The amount to be transferred
    function safeTransferFrom(
        address token,
        address from,
        address to,
        uint256 value
    ) internal {
        (bool success, bytes memory data) =
            token.call(abi.encodeWithSelector(IERC20.transferFrom.selector, from, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), 'STF');
    }

    /// @notice Transfers tokens from msg.sender to a recipient
    /// @dev Errors with ST if transfer fails
    /// @param token The contract address of the token which will be transferred
    /// @param to The recipient of the transfer
    /// @param value The value of the transfer
    function safeTransfer(
        address token,
        address to,
        uint256 value
    ) internal {
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(IERC20.transfer.selector, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), 'ST');
    }

    /// @notice Approves the stipulated contract to spend the given allowance in the given token
    /// @dev Errors with 'SA' if transfer fails
    /// @param token The contract address of the token to be approved
    /// @param to The target of the approval
    /// @param value The amount of the given token the target will be allowed to spend
    function safeApprove(
        address token,
        address to,
        uint256 value
    ) internal {
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(IERC20.approve.selector, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), 'SA');
    }

    /// @notice Transfers ETH to the recipient address
    /// @dev Fails with `STE`
    /// @param to The destination of the transfer
    /// @param value The value to be transferred
    function safeTransferETH(address to, uint256 value) internal {
        (bool success, ) = to.call{value: value}(new bytes(0));
        require(success, 'STE');
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.21;

import {TransferHelper} from "@uniswap/v3-periphery/contracts/libraries/TransferHelper.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

import {StrategyV2} from "../strategies/StrategyV2.sol";
import {StrategyController} from "../strategies/StrategyController.sol";
import {IWBETH} from "../interfaces/IWBETH.sol";
import {IUnwrapTokenV1ETH} from "../interfaces/IUnwrapTokenV1ETH.sol";
import {ICollateral} from "../interfaces/ICollateral.sol";

contract SymbioticDepositWBETHStrategy is StrategyV2 {
    address public immutable wbETHAddr;
    address public immutable unwrapTokenV1ETHAddr;
    address public immutable collateralAddr;

    uint256 internal immutable MULTIPLIER = 1e18;

    event WrapToWBETH(uint256 etherAmount, uint256 wbETHAmount);
    event DepositIntoSymbiotic(
        address indexed collateral,
        address indexed recipient,
        uint256 amount,
        uint256 share
    );
    event WithdrawFromSymbiotic(
        address indexed collateral,
        address indexed recipient,
        uint256 share,
        uint256 amount
    );

    constructor(
        address payable _controller,
        address _wbETHAddr,
        address _unwrapTokenV1ETHAddr,
        address _collateralAddr,
        string memory _name
    ) StrategyV2(_controller, _name) {
        wbETHAddr = _wbETHAddr;
        unwrapTokenV1ETHAddr = _unwrapTokenV1ETHAddr;
        collateralAddr = _collateralAddr;
    }

    function deposit() public payable override onlyController notAtSameBlock {
        require(msg.value != 0, "zero value");

        latestUpdateTime = block.timestamp;
    }

    function withdraw(
        uint256 _amount
    ) public override onlyController returns (uint256 actualAmount) {
        actualAmount = _withdraw(_amount);
    }

    function instantWithdraw(
        uint256 _amount
    ) public override onlyController returns (uint256 actualAmount) {
        actualAmount = _withdraw(_amount);
    }

    function clear() public override onlyController returns (uint256 amount) {
        uint256 balance = address(this).balance;

        if (balance != 0) {
            TransferHelper.safeTransferETH(controller, balance);
            amount = balance;
        }
    }

    function _withdraw(
        uint256 _amount
    ) internal returns (uint256 actualAmount) {
        require(_amount != 0, "zero value");

        actualAmount = _amount;

        TransferHelper.safeTransferETH(controller, actualAmount);
    }

    function getAllValue() public override returns (uint256 value) {
        value = getInvestedValue();
    }

    function getInvestedValue() public override returns (uint256 value) {
        uint256 etherValue = address(this).balance;
        (uint256 claimableValue, uint256 pendingValue) = checkPendingAssets();

        value = etherValue + claimableValue + pendingValue + getWBETHValue();
    }

    function getWBETHValue() public view returns (uint256 value) {
        uint256 wbBalance = IERC20(wbETHAddr).balanceOf(address(this));
        uint256 depositValue = IERC20(collateralAddr).balanceOf(address(this));

        value =
            ((wbBalance + depositValue) * IWBETH(wbETHAddr).exchangeRate()) /
            MULTIPLIER;
    }

    function wrapToWBETH(
        uint256 _ethAmount,
        address _referral
    ) external onlyOwner returns (uint256 amount) {
        require(_ethAmount != 0, "zero");
        require(_ethAmount <= address(this).balance, "exceed balance");

        IWBETH wbETH = IWBETH(wbETHAddr);

        uint256 balanceBefore = wbETH.balanceOf(address(this));

        wbETH.deposit{value: _ethAmount}(_referral);

        amount = wbETH.balanceOf(address(this)) - balanceBefore;

        emit WrapToWBETH(_ethAmount, amount);
    }

    function depositIntoSymbiotic(
        uint256 _wbETHAmount
    ) external onlyOwner returns (uint256 shares) {
        require(_wbETHAmount != 0, "zero");

        TransferHelper.safeApprove(wbETHAddr, collateralAddr, _wbETHAmount);

        shares = ICollateral(collateralAddr).deposit(
            address(this),
            _wbETHAmount
        );

        require(shares != 0, "mint zero share");

        emit DepositIntoSymbiotic(
            collateralAddr,
            address(this),
            _wbETHAmount,
            shares
        );
    }

    function withdrawFromSymbiotic(
        uint256 _share
    ) external onlyOwner returns (uint256 wbETHAmount) {
        require(_share != 0, "zero");

        wbETHAmount = IWBETH(wbETHAddr).balanceOf(address(this));

        ICollateral(collateralAddr).withdraw(address(this), _share);

        wbETHAmount = IWBETH(wbETHAddr).balanceOf(address(this)) - wbETHAmount;

        emit WithdrawFromSymbiotic(
            collateralAddr,
            address(this),
            _share,
            wbETHAmount
        );
    }

    function requestToEther(
        uint256 _amount
    ) external onlyOwner returns (uint256 etherAmount) {
        IWBETH wbETH = IWBETH(wbETHAddr);

        require(_amount != 0, "zero");
        require(_amount <= wbETH.balanceOf(address(this)), "exceed balance");

        wbETH.requestWithdrawEth(_amount);

        etherAmount = (_amount * IWBETH(wbETHAddr).exchangeRate()) / MULTIPLIER;
    }

    function claimPendingAssets(uint256 _index) external onlyOwner {
        IUnwrapTokenV1ETH(unwrapTokenV1ETHAddr).claimWithdraw(_index);
    }

    function checkPendingAssets()
        public
        view
        returns (uint256 totalClaimable, uint256 totalPending)
    {
        IUnwrapTokenV1ETH unwrapTokenV1ETH = IUnwrapTokenV1ETH(
            unwrapTokenV1ETHAddr
        );

        IUnwrapTokenV1ETH.WithdrawRequest[]
            memory allRequests = unwrapTokenV1ETH.getUserWithdrawRequests(
                address(this)
            );

        uint256 length = allRequests.length;
        if (length == 0) {
            return (0, 0);
        }

        uint256 lockTime = unwrapTokenV1ETH.lockTime();
        for (uint256 i; i < length; i++) {
            IUnwrapTokenV1ETH.WithdrawRequest memory request = allRequests[i];
            if (request.claimTime != 0) {
                continue;
            }
            if (
                block.timestamp >= request.triggerTime + lockTime &&
                request.allocated
            ) {
                totalClaimable = totalClaimable + request.ethAmount;
            } else {
                totalPending = totalPending + request.ethAmount;
            }
        }
    }

    receive() external payable {}
}