// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

// ----------------------------------------------------------------------------
// BokkyPooBah's DateTime Library v1.00
//
// A gas-efficient Solidity date and time library
//
// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary
//
// Tested date range 1970/01/01 to 2345/12/31
//
// Conventions:
// Unit      | Range         | Notes
// :-------- |:-------------:|:-----
// timestamp | >= 0          | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC
// year      | 1970 ... 2345 |
// month     | 1 ... 12      |
// day       | 1 ... 31      |
// hour      | 0 ... 23      |
// minute    | 0 ... 59      |
// second    | 0 ... 59      |
// dayOfWeek | 1 ... 7       | 1 = Monday, ..., 7 = Sunday
//
//
// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018.
//
// GNU Lesser General Public License 3.0
// https://www.gnu.org/licenses/lgpl-3.0.en.html
// ----------------------------------------------------------------------------

library BokkyPooBahsDateTimeLibrary {
  uint constant SECONDS_PER_DAY = 24 * 60 * 60;
  int constant OFFSET19700101 = 2440588;

  // ------------------------------------------------------------------------
  // Calculate year/month/day from the number of days since 1970/01/01 using
  // the date conversion algorithm from
  //   http://aa.usno.navy.mil/faq/docs/JD_Formula.php
  // and adding the offset 2440588 so that 1970/01/01 is day 0
  //
  // int L = days + 68569 + offset
  // int N = 4 * L / 146097
  // L = L - (146097 * N + 3) / 4
  // year = 4000 * (L + 1) / 1461001
  // L = L - 1461 * year / 4 + 31
  // month = 80 * L / 2447
  // dd = L - 2447 * month / 80
  // L = month / 11
  // month = month + 2 - 12 * L
  // year = 100 * (N - 49) + year + L
  // ------------------------------------------------------------------------
  function _daysToDate(
    uint _days
  ) internal pure returns (uint year, uint month, uint day) {
    int __days = int(_days);

    int L = __days + 68569 + OFFSET19700101;
    int N = (4 * L) / 146097;
    L = L - (146097 * N + 3) / 4;
    int _year = (4000 * (L + 1)) / 1461001;
    L = L - (1461 * _year) / 4 + 31;
    int _month = (80 * L) / 2447;
    int _day = L - (2447 * _month) / 80;
    L = _month / 11;
    _month = _month + 2 - 12 * L;
    _year = 100 * (N - 49) + _year + L;

    year = uint(_year);
    month = uint(_month);
    day = uint(_day);
  }

  function timestampToDate(
    uint timestamp
  ) internal pure returns (uint year, uint month, uint day) {
    (year, month, day) = _daysToDate(timestamp / SECONDS_PER_DAY);
  }
}

// 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) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the default value returned by this function, unless
     * it's overridden.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.4.0;

/// @title FixedPoint96
/// @notice A library for handling binary fixed point numbers, see https://en.wikipedia.org/wiki/Q_(number_format)
/// @dev Used in SqrtPriceMath.sol
library FixedPoint96 {
    uint8 internal constant RESOLUTION = 96;
    uint256 internal constant Q96 = 0x1000000000000000000000000;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

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

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

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

interface IPEAS is IERC20 {
  event Burn(address indexed user, uint256 amount);

  function burn(uint256 amount) external;
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;

/// @title Immutable state
/// @notice Functions that return immutable state of the router
interface IPeripheryImmutableState {
    /// @return Returns the address of the Uniswap V3 factory
    function factory() external view returns (address);

    /// @return Returns the address of WETH9
    function WETH9() external view returns (address);
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.7.5;
pragma abicoder v2;

import '@uniswap/v3-core/contracts/interfaces/callback/IUniswapV3SwapCallback.sol';

/// @title Router token swapping functionality
/// @notice Functions for swapping tokens via Uniswap V3
interface ISwapRouter is IUniswapV3SwapCallback {
    struct ExactInputSingleParams {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address recipient;
        uint256 deadline;
        uint256 amountIn;
        uint256 amountOutMinimum;
        uint160 sqrtPriceLimitX96;
    }

    /// @notice Swaps `amountIn` of one token for as much as possible of another token
    /// @param params The parameters necessary for the swap, encoded as `ExactInputSingleParams` in calldata
    /// @return amountOut The amount of the received token
    function exactInputSingle(ExactInputSingleParams calldata params) external payable returns (uint256 amountOut);

    struct ExactInputParams {
        bytes path;
        address recipient;
        uint256 deadline;
        uint256 amountIn;
        uint256 amountOutMinimum;
    }

    /// @notice Swaps `amountIn` of one token for as much as possible of another along the specified path
    /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactInputParams` in calldata
    /// @return amountOut The amount of the received token
    function exactInput(ExactInputParams calldata params) external payable returns (uint256 amountOut);

    struct ExactOutputSingleParams {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address recipient;
        uint256 deadline;
        uint256 amountOut;
        uint256 amountInMaximum;
        uint160 sqrtPriceLimitX96;
    }

    /// @notice Swaps as little as possible of one token for `amountOut` of another token
    /// @param params The parameters necessary for the swap, encoded as `ExactOutputSingleParams` in calldata
    /// @return amountIn The amount of the input token
    function exactOutputSingle(ExactOutputSingleParams calldata params) external payable returns (uint256 amountIn);

    struct ExactOutputParams {
        bytes path;
        address recipient;
        uint256 deadline;
        uint256 amountOut;
        uint256 amountInMaximum;
    }

    /// @notice Swaps as little as possible of one token for `amountOut` of another along the specified path (reversed)
    /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactOutputParams` in calldata
    /// @return amountIn The amount of the input token
    function exactOutput(ExactOutputParams calldata params) external payable returns (uint256 amountIn);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

interface ITokenRewards {
  event AddShares(address indexed wallet, uint256 amount);

  event RemoveShares(address indexed wallet, uint256 amount);

  event ClaimReward(address indexed wallet);

  event DistributeReward(address indexed wallet, uint256 amount);

  event DepositRewards(address indexed wallet, uint256 amount);

  function totalShares() external view returns (uint256);

  function totalStakers() external view returns (uint256);

  function rewardsToken() external view returns (address);

  function trackingToken() external view returns (address);

  function depositFromPairedLpToken(
    uint256 amount,
    uint256 slippageOverride
  ) external;

  function depositRewards(uint256 amount) external;

  function claimReward(address wallet) external;

  function setShares(
    address wallet,
    uint256 amount,
    bool sharesRemoving
  ) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

interface IV3TwapUtilities {
  function getV3Pool(
    address v3Factory,
    address token0,
    address token1,
    uint24 poolFee
  ) external view returns (address);

  function getPoolPriceUSDX96(
    address pricePool,
    address nativeStablePool,
    address WETH9
  ) external view returns (uint256);

  function sqrtPriceX96FromPoolAndInterval(
    address pool
  ) external view returns (uint160);

  function priceX96FromSqrtPriceX96(
    uint160 sqrtPriceX96
  ) external pure returns (uint256);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import '@openzeppelin/contracts/access/Ownable.sol';
import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';
import '@openzeppelin/contracts/utils/Context.sol';
import '@uniswap/v3-core/contracts/libraries/FixedPoint96.sol';
import '@uniswap/v3-periphery/contracts/interfaces/ISwapRouter.sol';
import '@uniswap/v3-periphery/contracts/interfaces/IPeripheryImmutableState.sol';
import './interfaces/IDecentralizedIndex.sol';
import './interfaces/IPEAS.sol';
import './interfaces/IProtocolFees.sol';
import './interfaces/IProtocolFeeRouter.sol';
import './interfaces/ITokenRewards.sol';
import './interfaces/IV3TwapUtilities.sol';
import './interfaces/IUniswapV2Router02.sol';
import './libraries/BokkyPooBahsDateTimeLibrary.sol';
import './libraries/PoolAddress.sol';

contract TokenRewards is ITokenRewards, Context {
  using SafeERC20 for IERC20;

  address constant V3_ROUTER = 0xE592427A0AEce92De3Edee1F18E0157C05861564;
  uint256 constant PRECISION = 10 ** 36;
  uint24 constant REWARDS_POOL_FEE = 10000; // 1%
  address immutable INDEX_FUND;
  address immutable PAIRED_LP_TOKEN;
  IProtocolFeeRouter immutable PROTOCOL_FEE_ROUTER;
  IV3TwapUtilities immutable V3_TWAP_UTILS;

  struct Reward {
    uint256 excluded;
    uint256 realized;
  }

  address public immutable override trackingToken;
  address public immutable override rewardsToken;
  uint256 public override totalShares;
  uint256 public override totalStakers;
  mapping(address => uint256) public shares;
  mapping(address => Reward) public rewards;

  uint256 _rewardsSwapSlippage = 10; // 1%
  uint256 _rewardsPerShare;
  uint256 public rewardsDistributed;
  uint256 public rewardsDeposited;
  mapping(uint256 => uint256) public rewardsDepMonthly;

  modifier onlyTrackingToken() {
    require(_msgSender() == trackingToken, 'UNAUTHORIZED');
    _;
  }

  constructor(
    IProtocolFeeRouter _feeRouter,
    IV3TwapUtilities _v3TwapUtilities,
    address _indexFund,
    address _pairedLpToken,
    address _trackingToken,
    address _rewardsToken
  ) {
    PROTOCOL_FEE_ROUTER = _feeRouter;
    V3_TWAP_UTILS = _v3TwapUtilities;
    INDEX_FUND = _indexFund;
    PAIRED_LP_TOKEN = _pairedLpToken;
    trackingToken = _trackingToken;
    rewardsToken = _rewardsToken;
  }

  function setShares(
    address _wallet,
    uint256 _amount,
    bool _sharesRemoving
  ) external override onlyTrackingToken {
    _setShares(_wallet, _amount, _sharesRemoving);
  }

  function _setShares(
    address _wallet,
    uint256 _amount,
    bool _sharesRemoving
  ) internal {
    _processFeesIfApplicable();
    if (_sharesRemoving) {
      _removeShares(_wallet, _amount);
      emit RemoveShares(_wallet, _amount);
    } else {
      _addShares(_wallet, _amount);
      emit AddShares(_wallet, _amount);
    }
  }

  function _addShares(address _wallet, uint256 _amount) internal {
    if (shares[_wallet] > 0) {
      _distributeReward(_wallet);
    }
    uint256 sharesBefore = shares[_wallet];
    totalShares += _amount;
    shares[_wallet] += _amount;
    if (sharesBefore == 0 && shares[_wallet] > 0) {
      totalStakers++;
    }
    rewards[_wallet].excluded = _cumulativeRewards(shares[_wallet]);
  }

  function _removeShares(address _wallet, uint256 _amount) internal {
    require(shares[_wallet] > 0 && _amount <= shares[_wallet], 'REMOVE');
    _distributeReward(_wallet);
    totalShares -= _amount;
    shares[_wallet] -= _amount;
    if (shares[_wallet] == 0) {
      totalStakers--;
    }
    rewards[_wallet].excluded = _cumulativeRewards(shares[_wallet]);
  }

  function _processFeesIfApplicable() internal {
    IDecentralizedIndex(INDEX_FUND).processPreSwapFeesAndSwap();
    if (
      rewardsToken != PAIRED_LP_TOKEN &&
      IERC20(PAIRED_LP_TOKEN).balanceOf(address(this)) > 0
    ) {
      depositFromPairedLpToken(0, 0);
    }
  }

  function depositFromPairedLpToken(
    uint256 _amountTknDepositing,
    uint256 _slippageOverride
  ) public override {
    require(PAIRED_LP_TOKEN != rewardsToken, 'LPREWSAME');
    if (_amountTknDepositing > 0) {
      IERC20(PAIRED_LP_TOKEN).safeTransferFrom(
        _msgSender(),
        address(this),
        _amountTknDepositing
      );
    }
    uint256 _amountTkn = IERC20(PAIRED_LP_TOKEN).balanceOf(address(this));
    require(_amountTkn > 0, 'NEEDTKN');
    uint256 _adminAmt;
    (uint256 _yieldAdminFee, ) = _getYieldFees();
    if (_yieldAdminFee > 0) {
      _adminAmt =
        (_amountTkn * _yieldAdminFee) /
        PROTOCOL_FEE_ROUTER.protocolFees().DEN();
      _amountTkn -= _adminAmt;
    }
    (address _token0, address _token1) = PAIRED_LP_TOKEN < rewardsToken
      ? (PAIRED_LP_TOKEN, rewardsToken)
      : (rewardsToken, PAIRED_LP_TOKEN);
    PoolAddress.PoolKey memory _poolKey = PoolAddress.PoolKey({
      token0: _token0,
      token1: _token1,
      fee: REWARDS_POOL_FEE
    });
    address _pool = PoolAddress.computeAddress(
      IPeripheryImmutableState(V3_ROUTER).factory(),
      _poolKey
    );
    uint160 _rewardsSqrtPriceX96 = V3_TWAP_UTILS
      .sqrtPriceX96FromPoolAndInterval(_pool);
    uint256 _rewardsPriceX96 = V3_TWAP_UTILS.priceX96FromSqrtPriceX96(
      _rewardsSqrtPriceX96
    );
    uint256 _amountOut = _token0 == PAIRED_LP_TOKEN
      ? (_rewardsPriceX96 * _amountTkn) / FixedPoint96.Q96
      : (_amountTkn * FixedPoint96.Q96) / _rewardsPriceX96;

    uint256 _rewardsBalBefore = IERC20(rewardsToken).balanceOf(address(this));
    IERC20(PAIRED_LP_TOKEN).safeIncreaseAllowance(V3_ROUTER, _amountTkn);
    uint256 _slippage = _slippageOverride > 0
      ? _slippageOverride
      : _rewardsSwapSlippage;
    try
      ISwapRouter(V3_ROUTER).exactInputSingle(
        ISwapRouter.ExactInputSingleParams({
          tokenIn: PAIRED_LP_TOKEN,
          tokenOut: rewardsToken,
          fee: REWARDS_POOL_FEE,
          recipient: address(this),
          deadline: block.timestamp,
          amountIn: _amountTkn,
          amountOutMinimum: (_amountOut * (1000 - _slippage)) / 1000,
          sqrtPriceLimitX96: 0
        })
      )
    {
      if (_adminAmt > 0) {
        IERC20(PAIRED_LP_TOKEN).safeTransfer(
          Ownable(address(V3_TWAP_UTILS)).owner(),
          _adminAmt
        );
      }
      _rewardsSwapSlippage = 10;
      _depositRewards(
        IERC20(rewardsToken).balanceOf(address(this)) - _rewardsBalBefore
      );
    } catch {
      if (_rewardsSwapSlippage < 500) {
        _rewardsSwapSlippage += 10;
      }
      IERC20(PAIRED_LP_TOKEN).safeDecreaseAllowance(V3_ROUTER, _amountTkn);
    }
  }

  function depositRewards(uint256 _amount) external override {
    require(_amount > 0, 'DEPAM');
    uint256 _rewardsBalBefore = IERC20(rewardsToken).balanceOf(address(this));
    IERC20(rewardsToken).safeTransferFrom(_msgSender(), address(this), _amount);
    _depositRewards(
      IERC20(rewardsToken).balanceOf(address(this)) - _rewardsBalBefore
    );
  }

  function _depositRewards(uint256 _amountTotal) internal {
    if (_amountTotal == 0) {
      return;
    }
    if (totalShares == 0) {
      _burnRewards(_amountTotal);
      return;
    }

    uint256 _depositAmount = _amountTotal;
    (, uint256 _yieldBurnFee) = _getYieldFees();
    if (_yieldBurnFee > 0) {
      uint256 _burnAmount = (_amountTotal * _yieldBurnFee) /
        PROTOCOL_FEE_ROUTER.protocolFees().DEN();
      if (_burnAmount > 0) {
        _burnRewards(_burnAmount);
        _depositAmount -= _burnAmount;
      }
    }
    rewardsDeposited += _depositAmount;
    rewardsDepMonthly[beginningOfMonth(block.timestamp)] += _depositAmount;
    _rewardsPerShare += (PRECISION * _depositAmount) / totalShares;
    emit DepositRewards(_msgSender(), _depositAmount);
  }

  function _distributeReward(address _wallet) internal {
    if (shares[_wallet] == 0) {
      return;
    }
    uint256 _amount = getUnpaid(_wallet);
    rewards[_wallet].realized += _amount;
    rewards[_wallet].excluded = _cumulativeRewards(shares[_wallet]);
    if (_amount > 0) {
      rewardsDistributed += _amount;
      IERC20(rewardsToken).safeTransfer(_wallet, _amount);
      emit DistributeReward(_wallet, _amount);
    }
  }

  function _burnRewards(uint256 _burnAmount) internal {
    try IPEAS(rewardsToken).burn(_burnAmount) {} catch {
      IERC20(rewardsToken).safeTransfer(address(0xdead), _burnAmount);
    }
  }

  function _getYieldFees()
    internal
    view
    returns (uint256 _admin, uint256 _burn)
  {
    IProtocolFees _fees = PROTOCOL_FEE_ROUTER.protocolFees();
    if (address(_fees) != address(0)) {
      _admin = _fees.yieldAdmin();
      _burn = _fees.yieldBurn();
    }
  }

  function beginningOfMonth(uint256 _timestamp) public pure returns (uint256) {
    (, , uint256 _dayOfMonth) = BokkyPooBahsDateTimeLibrary.timestampToDate(
      _timestamp
    );
    return _timestamp - ((_dayOfMonth - 1) * 1 days) - (_timestamp % 1 days);
  }

  function claimReward(address _wallet) external override {
    _distributeReward(_wallet);
    emit ClaimReward(_wallet);
  }

  function getUnpaid(address _wallet) public view returns (uint256) {
    if (shares[_wallet] == 0) {
      return 0;
    }
    uint256 earnedRewards = _cumulativeRewards(shares[_wallet]);
    uint256 rewardsExcluded = rewards[_wallet].excluded;
    if (earnedRewards <= rewardsExcluded) {
      return 0;
    }
    return earnedRewards - rewardsExcluded;
  }

  function _cumulativeRewards(uint256 _share) internal view returns (uint256) {
    return (_share * _rewardsPerShare) / PRECISION;
  }
}

{
  "compilationTarget": {
    "contracts/StakingPoolToken.sol": "StakingPoolToken"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "none"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}