// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

/*

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*
* MIT License
* ===========
*
* Copyright (c) 2020 WooTrade
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {Pausable} from "@openzeppelin/contracts/security/Pausable.sol";

import {TransferHelper} from "./util/TransferHelper.sol";

abstract contract BaseAdminOperation is Pausable, Ownable {
    event AdminUpdated(address indexed addr, bool flag);

    mapping(address => bool) public isAdmin;

    modifier onlyAdmin() {
        require(_msgSender() == owner() || isAdmin[_msgSender()], "BaseAdminOperation: !admin");
        _;
    }

    function pause() public onlyAdmin {
        _pause();
    }

    function unpause() public onlyAdmin {
        _unpause();
    }

    function setAdmin(address addr, bool flag) public onlyAdmin {
        isAdmin[addr] = flag;
        emit AdminUpdated(addr, flag);
    }

    function inCaseTokenGotStuck(address stuckToken) external virtual onlyOwner {
        if (stuckToken == 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) {
            TransferHelper.safeTransferETH(_msgSender(), address(this).balance);
        } else {
            uint256 amount = IERC20(stuckToken).balanceOf(address(this));
            TransferHelper.safeTransfer(stuckToken, _msgSender(), amount);
        }
    }
}

// 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/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.
 *
 * ```
 * 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: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (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

pragma solidity ^0.8.0;

import "./IWooStakingManager.sol";

interface IRewarder {
    event ClaimOnRewarder(address indexed from, address indexed to, uint256 amount);
    event SetStakingManagerOnRewarder(address indexed manager);

    function rewardToken() external view returns (address);

    function stakingManager() external view returns (IWooStakingManager);

    function pendingReward(address _user) external view returns (uint256 rewardAmount);

    function claim(address _user) external returns (uint256 rewardAmount);

    function claim(address _user, address _to) external returns (uint256 rewardAmount);

    function setStakingManager(address _manager) external;

    function updateReward() external;

    function updateRewardForUser(address _user) external;

    function clearRewardToDebt(address _user) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

/*

░██╗░░░░░░░██╗░█████╗░░█████╗░░░░░░░███████╗██╗
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░╚██╗████╗██╔╝██║░░██║██║░░██║█████╗█████╗░░██║
░░████╔═████║░██║░░██║██║░░██║╚════╝██╔══╝░░██║
░░╚██╔╝░╚██╔╝░╚█████╔╝╚█████╔╝░░░░░░██║░░░░░██║
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*
* MIT License
* ===========
*
* Copyright (c) 2020 WooTrade
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

/// @title Woo private pool for swap.
/// @notice Use this contract to directly interfact with woo's synthetic proactive
///         marketing making pool.
/// @author woo.network
interface IWooPPV2 {
    /* ----- Events ----- */

    event Deposit(address indexed token, address indexed sender, uint256 amount);
    event Withdraw(address indexed token, address indexed receiver, uint256 amount);
    event Migrate(address indexed token, address indexed receiver, uint256 amount);
    event AdminUpdated(address indexed addr, bool flag);
    event FeeAddrUpdated(address indexed newFeeAddr);
    event WooracleUpdated(address indexed newWooracle);
    event WooSwap(
        address indexed fromToken,
        address indexed toToken,
        uint256 fromAmount,
        uint256 toAmount,
        address from,
        address indexed to,
        address rebateTo,
        uint256 swapVol,
        uint256 swapFee
    );

    /* ----- External Functions ----- */

    /// @notice The quote token address (immutable).
    /// @return address of quote token
    function quoteToken() external view returns (address);

    /// @notice Gets the pool size of the specified token (swap liquidity).
    /// @param token the token address
    /// @return the pool size
    function poolSize(address token) external view returns (uint256);

    /// @notice Query the amount to swap `fromToken` to `toToken`, without checking the pool reserve balance.
    /// @param fromToken the from token
    /// @param toToken the to token
    /// @param fromAmount the amount of `fromToken` to swap
    /// @return toAmount the swapped amount of `toToken`
    function tryQuery(address fromToken, address toToken, uint256 fromAmount) external view returns (uint256 toAmount);

    /// @notice Query the amount to swap `fromToken` to `toToken`, with checking the pool reserve balance.
    /// @dev tx reverts when 'toToken' balance is insufficient.
    /// @param fromToken the from token
    /// @param toToken the to token
    /// @param fromAmount the amount of `fromToken` to swap
    /// @return toAmount the swapped amount of `toToken`
    function query(address fromToken, address toToken, uint256 fromAmount) external view returns (uint256 toAmount);

    /// @notice Swap `fromToken` to `toToken`.
    /// @param fromToken the from token
    /// @param toToken the to token
    /// @param fromAmount the amount of `fromToken` to swap
    /// @param minToAmount the minimum amount of `toToken` to receive
    /// @param to the destination address
    /// @param rebateTo the rebate address (optional, can be address ZERO)
    /// @return realToAmount the amount of toToken to receive
    function swap(
        address fromToken,
        address toToken,
        uint256 fromAmount,
        uint256 minToAmount,
        address to,
        address rebateTo
    ) external returns (uint256 realToAmount);

    /// @notice Deposit the specified token into the liquidity pool of WooPPV2.
    /// @param token the token to deposit
    /// @param amount the deposit amount
    function deposit(address token, uint256 amount) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface IWooStakingCompounder {
    function compoundAll() external;

    function compound(uint256 start, uint256 end) external;

    function contains(address _user) external view returns (bool);

    function addUser(address _user) external;

    function addUserIfThresholdMeet(address _user) external returns (bool added);

    function removeUser(address _user) external returns (bool removed);

    function removeUserIfThresholdFail(address _user) external returns (bool removed);
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.17;

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

interface IWooStakingLocal {
    /* ----- Events ----- */

    event StakeOnLocal(address indexed user, uint256 amount);
    event StakeForUsersOnLocal(address[] users, uint256[] amounts, uint256 total);
    event UnstakeOnLocal(address indexed user, uint256 amount);
    event SetAutoCompoundOnLocal(address indexed user, bool flag);
    event CompoundMPOnLocal(address indexed user);
    event CompoundAllOnLocal(address indexed user);
    event SetStakingManagerOnLocal(address indexed manager);

    /* ----- State Variables ----- */

    function want() external view returns (IERC20);

    function balances(address user) external view returns (uint256 balance);

    /* ----- Functions ----- */

    function stake(uint256 _amount) external;

    function stake(address _user, uint256 _amount) external;

    function stakeForUsers(address[] memory _users, uint256[] memory _amounts, uint256 _total) external;

    function unstake(uint256 _amount) external;

    function unstakeAll() external;

    function setAutoCompound(bool _flag) external;

    function compoundMP() external;

    function compoundAll() external;
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.17;

interface IWooStakingManager {
    /* ----- Events ----- */

    event StakeWooOnStakingManager(address indexed user, uint256 amount);
    event UnstakeWooOnStakingManager(address indexed user, uint256 amount);
    event AddMPOnStakingManager(address indexed user, uint256 amount);
    event CompoundMPOnStakingManager(address indexed user);
    event CompoundRewardsOnStakingManager(address indexed user, uint256 wooAmount);
    event CompoundAllOnStakingManager(address indexed user);
    event CompoundAllForUsersOnStakingManager(address[] users, uint256[] wooRewards);
    event SetAutoCompoundOnStakingManager(address indexed user, bool flag);
    event SetMPRewarderOnStakingManager(address indexed rewarder);
    event SetWooPPOnStakingManager(address indexed wooPP);
    event SetStakingLocalOnStakingManager(address indexed stakingProxy);
    event SetCompounderOnStakingManager(address indexed compounder);
    event AddRewarderOnStakingManager(address indexed rewarder);
    event RemoveRewarderOnStakingManager(address indexed rewarder);
    event ClaimRewardsOnStakingManager(address indexed user);

    /* ----- State Variables ----- */

    /* ----- Functions ----- */

    function stakeWoo(address _user, uint256 _amount) external;

    function unstakeWoo(address _user, uint256 _amount) external;

    function mpBalance(address _user) external view returns (uint256);

    function wooBalance(address _user) external view returns (uint256);

    function wooTotalBalance() external view returns (uint256);

    function totalBalance(address _user) external view returns (uint256);

    function totalBalance() external view returns (uint256);

    function compoundMP(address _user) external;

    function addMP(address _user, uint256 _amount) external;

    function compoundRewards(address _user) external;

    function compoundAll(address _user) external;

    function compoundAllForUsers(address[] memory _users) external;

    function setAutoCompound(address _user, bool _flag) external;

    function pendingRewards(
        address _user
    ) external view returns (uint256 mpRewardAmount, address[] memory rewardTokens, uint256[] memory amounts);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (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 anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing 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
// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        _requireNotPaused();
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        require(!paused(), "Pausable: paused");
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        require(paused(), "Pausable: not paused");
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

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

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;

// helper methods for interacting with ERC20 tokens and sending ETH that do not consistently return true/false
library TransferHelper {
    function safeApprove(address token, address to, uint256 value) internal {
        // bytes4(keccak256(bytes('approve(address,uint256)')));
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x095ea7b3, to, value));
        require(
            success && (data.length == 0 || abi.decode(data, (bool))),
            "TransferHelper::safeApprove: approve failed"
        );
    }

    function safeTransfer(address token, address to, uint256 value) internal {
        // bytes4(keccak256(bytes('transfer(address,uint256)')));
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));
        require(
            success && (data.length == 0 || abi.decode(data, (bool))),
            "TransferHelper::safeTransfer: transfer failed"
        );
    }

    function safeTransferFrom(address token, address from, address to, uint256 value) internal {
        // bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value));
        require(
            success && (data.length == 0 || abi.decode(data, (bool))),
            "TransferHelper::transferFrom: transferFrom failed"
        );
    }

    function safeTransferETH(address to, uint256 value) internal {
        (bool success, ) = to.call{value: value}(new bytes(0));
        require(success, "TransferHelper::safeTransferETH: ETH transfer failed");
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

/*

░██╗░░░░░░░██╗░█████╗░░█████╗░░░░░░░███████╗██╗
░██║░░██╗░░██║██╔══██╗██╔══██╗░░░░░░██╔════╝██║
░╚██╗████╗██╔╝██║░░██║██║░░██║█████╗█████╗░░██║
░░████╔═████║░██║░░██║██║░░██║╚════╝██╔══╝░░██║
░░╚██╔╝░╚██╔╝░╚█████╔╝╚█████╔╝░░░░░░██║░░░░░██║
░░░╚═╝░░░╚═╝░░░╚════╝░░╚════╝░░░░░░░╚═╝░░░░░╚═╝

*
* MIT License
* ===========
*
* Copyright (c) 2020 WooTrade
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

import {EnumerableSet} from "@openzeppelin/contracts/utils/structs/EnumerableSet.sol";
import {ReentrancyGuard} from "@openzeppelin/contracts/security/ReentrancyGuard.sol";

import {IRewarder} from "./interfaces/IRewarder.sol";
import {IWooStakingCompounder} from "./interfaces/IWooStakingCompounder.sol";
import {IWooPPV2} from "./interfaces/IWooPPV2.sol";
import {IWooStakingManager} from "./interfaces/IWooStakingManager.sol";
import {IWooStakingLocal} from "./interfaces/IWooStakingLocal.sol";

import {BaseAdminOperation} from "./BaseAdminOperation.sol";
import {TransferHelper} from "./util/TransferHelper.sol";

contract WooStakingManager is IWooStakingManager, BaseAdminOperation, ReentrancyGuard {
    using EnumerableSet for EnumerableSet.AddressSet;

    mapping(address => uint256) public wooBalance;
    mapping(address => uint256) public mpBalance;
    uint256 public wooTotalBalance;
    uint256 public mpTotalBalance;
    EnumerableSet.AddressSet private stakers;

    IWooPPV2 public wooPP;
    IWooStakingLocal public stakingLocal;

    address public immutable woo;

    IRewarder public mpRewarder; // Record and distribute MP rewards
    EnumerableSet.AddressSet private rewarders; // Other general rewards (e.g. usdc, eth, op, etc)

    IWooStakingCompounder public compounder;

    constructor(address _woo) {
        woo = _woo;
    }

    modifier onlyMpRewarder() {
        require(address(mpRewarder) == msg.sender, "RESTRICTED_TO_MP_REWARDER");
        _;
    }

    // --------------------- Business Functions --------------------- //

    function stakeWoo(address _user, uint256 _amount) public onlyAdmin {
        if (_amount == 0) {
            return;
        }

        _updateRewardsForUser(_user);
        mpRewarder.claim(_user); // claim and compound into staking manager

        wooBalance[_user] += _amount;
        wooTotalBalance += _amount;

        _clearRewardsToDebt(_user);

        if (_amount > 0) {
            stakers.add(_user);
        }

        emit StakeWooOnStakingManager(_user, _amount);
    }

    function unstakeWoo(address _user, uint256 _amount) public onlyAdmin {
        if (_amount == 0) {
            return;
        }

        _updateRewardsForUser(_user);
        mpRewarder.claim(_user);

        uint256 wooPrevBalance = wooBalance[_user];
        wooBalance[_user] -= _amount;
        wooTotalBalance -= _amount;

        // When unstaking, remove the proportional amount of MP tokens,
        // based on amount / wooBalance
        uint256 burnAmount = (mpBalance[_user] * _amount) / wooPrevBalance;
        mpBalance[_user] -= burnAmount;
        mpTotalBalance -= burnAmount;

        _clearRewardsToDebt(_user);

        compounder.removeUserIfThresholdFail(_user);

        if (wooBalance[_user] == 0) {
            stakers.remove(_user);
        }

        emit UnstakeWooOnStakingManager(_user, _amount);
    }

    function _updateRewardsForUser(address _user) internal {
        mpRewarder.updateRewardForUser(_user);
        unchecked {
            for (uint256 i = 0; i < rewarders.length(); ++i) {
                IRewarder(rewarders.at(i)).updateRewardForUser(_user);
            }
        }
    }

    function _clearRewardsToDebt(address _user) internal {
        mpRewarder.clearRewardToDebt(_user);
        unchecked {
            for (uint256 i = 0; i < rewarders.length(); ++i) {
                IRewarder(rewarders.at(i)).clearRewardToDebt(_user);
            }
        }
    }

    function totalBalance(address _user) external view returns (uint256) {
        return wooBalance[_user] + mpBalance[_user];
    }

    function totalBalance() external view returns (uint256) {
        return wooTotalBalance + mpTotalBalance;
    }

    function pendingRewards(
        address _user
    ) external view returns (uint256 mpRewardAmount, address[] memory rewardTokens, uint256[] memory amounts) {
        mpRewardAmount = mpRewarder.pendingReward(_user);

        uint256 length = rewarders.length();
        rewardTokens = new address[](length);
        amounts = new uint256[](length);

        unchecked {
            for (uint256 i = 0; i < length; ++i) {
                IRewarder _rewarder = IRewarder(rewarders.at(i));
                rewardTokens[i] = _rewarder.rewardToken();
                amounts[i] = _rewarder.pendingReward(_user);
            }
        }
    }

    function claimRewards() external nonReentrant {
        address _user = msg.sender;
        // NOTE: manual-claim only works when user disables the auto compounding
        require(!compounder.contains(_user), "WooStakingManager: !COMPOUND");
        _claim(_user);
    }

    function claimRewards(address _user) external onlyAdmin {
        // NOTE: admin forced claim reward can bypass the auto compounding, by design.
        // REMOVED: require(!compounder.contains(_user), "WooStakingManager: !COMPOUND");
        _claim(_user);
    }

    function _claim(address _user) internal {
        for (uint256 i = 0; i < rewarders.length(); ++i) {
            IRewarder _rewarder = IRewarder(rewarders.at(i));
            _rewarder.claim(_user);
        }
        emit ClaimRewardsOnStakingManager(_user);
    }

    function setAutoCompound(address _user, bool _flag) external onlyAdmin {
        if (_flag) {
            compounder.addUserIfThresholdMeet(_user);
        } else {
            compounder.removeUser(_user);
        }
        emit SetAutoCompoundOnStakingManager(_user, _flag);
    }

    function compoundAll(address _user) external onlyAdmin {
        compoundMP(_user);
        compoundRewards(_user);
        emit CompoundAllOnStakingManager(_user);
    }

    function compoundAllForUsers(address[] memory _users) external onlyAdmin {
        uint256 len = _users.length;
        unchecked {
            for (uint256 i = 0; i < len; ++i) {
                compoundMP(_users[i]);
            }
        }

        uint256[] memory rewards = new uint256[](len);
        address selfAddr = address(this);
        uint256[] memory wooRewards = new uint256[](len);
        uint256 wooTotalAmount = 0;
        uint256 rewarderLen = rewarders.length();
        for (uint256 i = 0; i < rewarderLen; ++i) {
            uint256 totalReward = 0;
            IRewarder _rewarder = IRewarder(rewarders.at(i));
            // claim token
            for (uint256 j = 0; j < len; ++j) {
                uint256 rewardAmount = _rewarder.claim(_users[j], address(wooPP));
                rewards[j] = rewardAmount;
                totalReward += rewardAmount;
            }
            // swap
            uint256 rewarderTotalWoo = 0;
            address rewardToken = _rewarder.rewardToken();
            if (rewardToken == woo) {
                rewarderTotalWoo = totalReward;
            } else {
                rewarderTotalWoo = wooPP.swap(rewardToken, woo, totalReward, 0, selfAddr, selfAddr);
            }
            for (uint256 j = 0; j < len; ++j) {
                wooRewards[j] += (rewarderTotalWoo * rewards[j]) / totalReward;
            }
            wooTotalAmount += rewarderTotalWoo;
        }
        if (wooTotalAmount > 0) {
            TransferHelper.safeApprove(woo, address(stakingLocal), wooTotalAmount);
            stakingLocal.stakeForUsers(_users, wooRewards, wooTotalAmount);
        }
        emit CompoundAllForUsersOnStakingManager(_users, wooRewards);
    }

    function compoundMP(address _user) public onlyAdmin {
        // Caution: since user weight is related to mp balance, force update rewards and debts.
        uint256 i;
        uint256 len = rewarders.length();
        unchecked {
            for (i = 0; i < len; ++i) {
                IRewarder(rewarders.at(i)).updateRewardForUser(_user);
            }
        }

        mpRewarder.claim(_user); // claim MP and restaking to this managaer

        unchecked {
            for (i = 0; i < len; ++i) {
                IRewarder(rewarders.at(i)).clearRewardToDebt(_user);
            }
        }

        emit CompoundMPOnStakingManager(_user);
    }

    function addMP(address _user, uint256 _amount) public onlyMpRewarder {
        mpBalance[_user] += _amount;
        mpTotalBalance += _amount;
        emit AddMPOnStakingManager(_user, _amount);
    }

    function compoundRewards(address _user) public onlyAdmin {
        uint256 wooAmount = 0;
        address selfAddr = address(this);
        uint256 len = rewarders.length();
        for (uint256 i = 0; i < len; ++i) {
            IRewarder _rewarder = IRewarder(rewarders.at(i));
            if (_rewarder.rewardToken() == woo) {
                wooAmount += _rewarder.claim(_user, selfAddr);
            } else {
                // claim and swap to WOO token
                uint256 rewardAmount = _rewarder.claim(_user, address(wooPP));
                if (rewardAmount > 0) {
                    wooAmount += wooPP.swap(_rewarder.rewardToken(), woo, rewardAmount, 0, selfAddr, selfAddr);
                }
            }
        }

        if (wooAmount > 0) {
            TransferHelper.safeApprove(woo, address(stakingLocal), wooAmount);
            stakingLocal.stake(_user, wooAmount);
        }

        emit CompoundRewardsOnStakingManager(_user, wooAmount);
    }

    // --------------------- Admin Maintain Functions --------------------- //

    function syncBalances(address[] memory _users, uint256[] memory _balances) external onlyAdmin {
        require(_users.length == _balances.length, "WooStakingManager: INVALID_INPUTS");
        uint256 len = _users.length;
        address user;
        uint256 balance;
        uint256 prevBalance;
        unchecked {
            for (uint256 i = 0; i < len; ++i) {
                user = _users[i];
                balance = _balances[i];
                prevBalance = wooBalance[user];
                if (balance > prevBalance) {
                    stakeWoo(user, balance - prevBalance);
                } else if (balance < prevBalance) {
                    unstakeWoo(user, prevBalance - balance);
                }
            }
        }
    }

    function allStakersLength() external view returns (uint256) {
        return stakers.length();
    }

    function allStakers() external view returns (address[] memory) {
        uint256 len = stakers.length();
        address[] memory _stakers = new address[](len);
        unchecked {
            for (uint256 i = 0; i < len; ++i) {
                _stakers[i] = stakers.at(i);
            }
        }
        return _stakers;
    }

    // range: [start, end)
    function allStakers(uint256 start, uint256 end) external view returns (address[] memory) {
        address[] memory _stakers = new address[](end - start);
        unchecked {
            for (uint256 i = start; i < end; ++i) {
                _stakers[i - start] = stakers.at(i);
            }
        }
        return _stakers;
    }

    // --------------------- Admin Functions --------------------- //

    function setMPRewarder(address _rewarder) external onlyAdmin {
        mpRewarder = IRewarder(_rewarder);
        require(address(IRewarder(_rewarder).stakingManager()) == address(this), "!stakingManager");

        emit SetMPRewarderOnStakingManager(_rewarder);
    }

    function addRewarder(address _rewarder) external onlyAdmin {
        require(address(IRewarder(_rewarder).stakingManager()) == address(this), "!stakingManager");
        rewarders.add(_rewarder);
        emit AddRewarderOnStakingManager(_rewarder);
    }

    function removeRewarder(address _rewarder) external onlyAdmin {
        rewarders.remove(_rewarder);
        emit RemoveRewarderOnStakingManager(_rewarder);
    }

    function setCompounder(address _compounder) external onlyAdmin {
        // remove the former compounder from `admin` if needed
        if (address(compounder) != address(0)) {
            setAdmin(address(compounder), false);
        }
        compounder = IWooStakingCompounder(_compounder);
        setAdmin(_compounder, true);
        emit SetCompounderOnStakingManager(_compounder);
    }

    function setWooPP(address _wooPP) external onlyOwner {
        wooPP = IWooPPV2(_wooPP);
        emit SetWooPPOnStakingManager(_wooPP);
    }

    function setStakingLocal(address _stakingLocal) external onlyOwner {
        // remove the former local from `admin` if needed
        if (address(stakingLocal) != address(0)) {
            setAdmin(address(stakingLocal), false);
        }
        stakingLocal = IWooStakingLocal(_stakingLocal);
        setAdmin(_stakingLocal, true);
        emit SetStakingLocalOnStakingManager(_stakingLocal);
    }
}

{
  "compilationTarget": {
    "contracts/WooStakingManager.sol": "WooStakingManager"
  },
  "evmVersion": "london",
  "libraries": {},
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}