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// SPDX-License-Identifier: MIT
pragma solidity ^0.7.6;

import '@openzeppelin/contracts/access/Ownable.sol';
import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import '@openzeppelin/contracts/token/ERC20/SafeERC20.sol';
import './RewardsTracker.sol';

contract LendingPoolTokenCustodian is Ownable, RewardsTracker {
  using SafeERC20 for IERC20;

  address public hype;

  constructor(address _hype) RewardsTracker(_hype) {
    hype = _hype;
  }

  function process(
    IERC20 _token,
    address _user,
    uint256 _balanceUpdate,
    bool _isWithdrawing
  ) external onlyOwner {
    if (_isWithdrawing) {
      _token.safeTransfer(msg.sender, _balanceUpdate);
    } else {
      _token.safeTransferFrom(msg.sender, address(this), _balanceUpdate);
    }
    if (address(_token) == hype) {
      _setShare(_user, _balanceUpdate, _isWithdrawing);
    }
  }

  receive() external payable {
    uint256 _hypeTokens = IERC20(hype).balanceOf(address(this));
    if (_hypeTokens > 0) {
      _depositRewards(msg.value);
    } else {
      (bool _success, ) = payable(owner()).call{ value: msg.value }('');
      require(_success, 'RECEIVE: did not send to owner');
    }
  }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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 () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        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 {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @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);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "./IERC20.sol";
import "../../math/SafeMath.sol";
import "../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using SafeMath for uint256;
    using Address for address;

    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        // solhint-disable-next-line max-line-length
        require((value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(value);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) { // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

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

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

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

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

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

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

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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 GSN 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 payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.7.6;

interface IRewardsTracker {
  function claimReward() external;

  function depositRewards() external payable;

  function getShares(address wallet) external view returns (uint256);

  function setShare(
    address shareholder,
    uint256 balanceUpdate,
    bool isRemoving
  ) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.7.6;

// ----------------------------------------------------------------------------
// 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;
  uint constant SECONDS_PER_HOUR = 60 * 60;
  uint constant SECONDS_PER_MINUTE = 60;
  int constant OFFSET19700101 = 2440588;

  uint constant DOW_MON = 1;
  uint constant DOW_TUE = 2;
  uint constant DOW_WED = 3;
  uint constant DOW_THU = 4;
  uint constant DOW_FRI = 5;
  uint constant DOW_SAT = 6;
  uint constant DOW_SUN = 7;

  // ------------------------------------------------------------------------
  // Calculate the number of days from 1970/01/01 to year/month/day using
  // the date conversion algorithm from
  //   http://aa.usno.navy.mil/faq/docs/JD_Formula.php
  // and subtracting the offset 2440588 so that 1970/01/01 is day 0
  //
  // days = day
  //      - 32075
  //      + 1461 * (year + 4800 + (month - 14) / 12) / 4
  //      + 367 * (month - 2 - (month - 14) / 12 * 12) / 12
  //      - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4
  //      - offset
  // ------------------------------------------------------------------------
  function _daysFromDate(
    uint year,
    uint month,
    uint day
  ) internal pure returns (uint _days) {
    require(year >= 1970);
    int _year = int(year);
    int _month = int(month);
    int _day = int(day);

    int __days = _day -
      32075 +
      (1461 * (_year + 4800 + (_month - 14) / 12)) /
      4 +
      (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /
      12 -
      (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /
      4 -
      OFFSET19700101;

    _days = uint(__days);
  }

  // ------------------------------------------------------------------------
  // 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 timestampFromDate(
    uint year,
    uint month,
    uint day
  ) internal pure returns (uint timestamp) {
    timestamp = _daysFromDate(year, month, day) * SECONDS_PER_DAY;
  }

  function timestampFromDateTime(
    uint year,
    uint month,
    uint day,
    uint hour,
    uint minute,
    uint second
  ) internal pure returns (uint timestamp) {
    timestamp =
      _daysFromDate(year, month, day) *
      SECONDS_PER_DAY +
      hour *
      SECONDS_PER_HOUR +
      minute *
      SECONDS_PER_MINUTE +
      second;
  }

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

  function timestampToDateTime(
    uint timestamp
  )
    internal
    pure
    returns (
      uint year,
      uint month,
      uint day,
      uint hour,
      uint minute,
      uint second
    )
  {
    (year, month, day) = _daysToDate(timestamp / SECONDS_PER_DAY);
    uint secs = timestamp % SECONDS_PER_DAY;
    hour = secs / SECONDS_PER_HOUR;
    secs = secs % SECONDS_PER_HOUR;
    minute = secs / SECONDS_PER_MINUTE;
    second = secs % SECONDS_PER_MINUTE;
  }

  function isValidDate(
    uint year,
    uint month,
    uint day
  ) internal pure returns (bool valid) {
    if (year >= 1970 && month > 0 && month <= 12) {
      uint daysInMonth = _getDaysInMonth(year, month);
      if (day > 0 && day <= daysInMonth) {
        valid = true;
      }
    }
  }

  function isValidDateTime(
    uint year,
    uint month,
    uint day,
    uint hour,
    uint minute,
    uint second
  ) internal pure returns (bool valid) {
    if (isValidDate(year, month, day)) {
      if (hour < 24 && minute < 60 && second < 60) {
        valid = true;
      }
    }
  }

  function isLeapYear(uint timestamp) internal pure returns (bool leapYear) {
    uint year;
    uint month;
    uint day;
    (year, month, day) = _daysToDate(timestamp / SECONDS_PER_DAY);
    leapYear = _isLeapYear(year);
  }

  function _isLeapYear(uint year) internal pure returns (bool leapYear) {
    leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);
  }

  function isWeekDay(uint timestamp) internal pure returns (bool weekDay) {
    weekDay = getDayOfWeek(timestamp) <= DOW_FRI;
  }

  function isWeekEnd(uint timestamp) internal pure returns (bool weekEnd) {
    weekEnd = getDayOfWeek(timestamp) >= DOW_SAT;
  }

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

  function _getDaysInMonth(
    uint year,
    uint month
  ) internal pure returns (uint daysInMonth) {
    if (
      month == 1 ||
      month == 3 ||
      month == 5 ||
      month == 7 ||
      month == 8 ||
      month == 10 ||
      month == 12
    ) {
      daysInMonth = 31;
    } else if (month != 2) {
      daysInMonth = 30;
    } else {
      daysInMonth = _isLeapYear(year) ? 29 : 28;
    }
  }

  // 1 = Monday, 7 = Sunday
  function getDayOfWeek(uint timestamp) internal pure returns (uint dayOfWeek) {
    uint _days = timestamp / SECONDS_PER_DAY;
    dayOfWeek = ((_days + 3) % 7) + 1;
  }

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

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

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

  function getHour(uint timestamp) internal pure returns (uint hour) {
    uint secs = timestamp % SECONDS_PER_DAY;
    hour = secs / SECONDS_PER_HOUR;
  }

  function getMinute(uint timestamp) internal pure returns (uint minute) {
    uint secs = timestamp % SECONDS_PER_HOUR;
    minute = secs / SECONDS_PER_MINUTE;
  }

  function getSecond(uint timestamp) internal pure returns (uint second) {
    second = timestamp % SECONDS_PER_MINUTE;
  }

  function addYears(
    uint timestamp,
    uint _years
  ) internal pure returns (uint newTimestamp) {
    uint year;
    uint month;
    uint day;
    (year, month, day) = _daysToDate(timestamp / SECONDS_PER_DAY);
    year += _years;
    uint daysInMonth = _getDaysInMonth(year, month);
    if (day > daysInMonth) {
      day = daysInMonth;
    }
    newTimestamp =
      _daysFromDate(year, month, day) *
      SECONDS_PER_DAY +
      (timestamp % SECONDS_PER_DAY);
    require(newTimestamp >= timestamp);
  }

  function addMonths(
    uint timestamp,
    uint _months
  ) internal pure returns (uint newTimestamp) {
    uint year;
    uint month;
    uint day;
    (year, month, day) = _daysToDate(timestamp / SECONDS_PER_DAY);
    month += _months;
    year += (month - 1) / 12;
    month = ((month - 1) % 12) + 1;
    uint daysInMonth = _getDaysInMonth(year, month);
    if (day > daysInMonth) {
      day = daysInMonth;
    }
    newTimestamp =
      _daysFromDate(year, month, day) *
      SECONDS_PER_DAY +
      (timestamp % SECONDS_PER_DAY);
    require(newTimestamp >= timestamp);
  }

  function addDays(
    uint timestamp,
    uint _days
  ) internal pure returns (uint newTimestamp) {
    newTimestamp = timestamp + _days * SECONDS_PER_DAY;
    require(newTimestamp >= timestamp);
  }

  function addHours(
    uint timestamp,
    uint _hours
  ) internal pure returns (uint newTimestamp) {
    newTimestamp = timestamp + _hours * SECONDS_PER_HOUR;
    require(newTimestamp >= timestamp);
  }

  function addMinutes(
    uint timestamp,
    uint _minutes
  ) internal pure returns (uint newTimestamp) {
    newTimestamp = timestamp + _minutes * SECONDS_PER_MINUTE;
    require(newTimestamp >= timestamp);
  }

  function addSeconds(
    uint timestamp,
    uint _seconds
  ) internal pure returns (uint newTimestamp) {
    newTimestamp = timestamp + _seconds;
    require(newTimestamp >= timestamp);
  }

  function subYears(
    uint timestamp,
    uint _years
  ) internal pure returns (uint newTimestamp) {
    uint year;
    uint month;
    uint day;
    (year, month, day) = _daysToDate(timestamp / SECONDS_PER_DAY);
    year -= _years;
    uint daysInMonth = _getDaysInMonth(year, month);
    if (day > daysInMonth) {
      day = daysInMonth;
    }
    newTimestamp =
      _daysFromDate(year, month, day) *
      SECONDS_PER_DAY +
      (timestamp % SECONDS_PER_DAY);
    require(newTimestamp <= timestamp);
  }

  function subMonths(
    uint timestamp,
    uint _months
  ) internal pure returns (uint newTimestamp) {
    uint year;
    uint month;
    uint day;
    (year, month, day) = _daysToDate(timestamp / SECONDS_PER_DAY);
    uint yearMonth = year * 12 + (month - 1) - _months;
    year = yearMonth / 12;
    month = (yearMonth % 12) + 1;
    uint daysInMonth = _getDaysInMonth(year, month);
    if (day > daysInMonth) {
      day = daysInMonth;
    }
    newTimestamp =
      _daysFromDate(year, month, day) *
      SECONDS_PER_DAY +
      (timestamp % SECONDS_PER_DAY);
    require(newTimestamp <= timestamp);
  }

  function subDays(
    uint timestamp,
    uint _days
  ) internal pure returns (uint newTimestamp) {
    newTimestamp = timestamp - _days * SECONDS_PER_DAY;
    require(newTimestamp <= timestamp);
  }

  function subHours(
    uint timestamp,
    uint _hours
  ) internal pure returns (uint newTimestamp) {
    newTimestamp = timestamp - _hours * SECONDS_PER_HOUR;
    require(newTimestamp <= timestamp);
  }

  function subMinutes(
    uint timestamp,
    uint _minutes
  ) internal pure returns (uint newTimestamp) {
    newTimestamp = timestamp - _minutes * SECONDS_PER_MINUTE;
    require(newTimestamp <= timestamp);
  }

  function subSeconds(
    uint timestamp,
    uint _seconds
  ) internal pure returns (uint newTimestamp) {
    newTimestamp = timestamp - _seconds;
    require(newTimestamp <= timestamp);
  }

  function diffYears(
    uint fromTimestamp,
    uint toTimestamp
  ) internal pure returns (uint _years) {
    require(fromTimestamp <= toTimestamp);
    uint fromYear;
    uint fromMonth;
    uint fromDay;
    uint toYear;
    uint toMonth;
    uint toDay;
    (fromYear, fromMonth, fromDay) = _daysToDate(
      fromTimestamp / SECONDS_PER_DAY
    );
    (toYear, toMonth, toDay) = _daysToDate(toTimestamp / SECONDS_PER_DAY);
    _years = toYear - fromYear;
  }

  function diffMonths(
    uint fromTimestamp,
    uint toTimestamp
  ) internal pure returns (uint _months) {
    require(fromTimestamp <= toTimestamp);
    uint fromYear;
    uint fromMonth;
    uint fromDay;
    uint toYear;
    uint toMonth;
    uint toDay;
    (fromYear, fromMonth, fromDay) = _daysToDate(
      fromTimestamp / SECONDS_PER_DAY
    );
    (toYear, toMonth, toDay) = _daysToDate(toTimestamp / SECONDS_PER_DAY);
    _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;
  }

  function diffDays(
    uint fromTimestamp,
    uint toTimestamp
  ) internal pure returns (uint _days) {
    require(fromTimestamp <= toTimestamp);
    _days = (toTimestamp - fromTimestamp) / SECONDS_PER_DAY;
  }

  function diffHours(
    uint fromTimestamp,
    uint toTimestamp
  ) internal pure returns (uint _hours) {
    require(fromTimestamp <= toTimestamp);
    _hours = (toTimestamp - fromTimestamp) / SECONDS_PER_HOUR;
  }

  function diffMinutes(
    uint fromTimestamp,
    uint toTimestamp
  ) internal pure returns (uint _minutes) {
    require(fromTimestamp <= toTimestamp);
    _minutes = (toTimestamp - fromTimestamp) / SECONDS_PER_MINUTE;
  }

  function diffSeconds(
    uint fromTimestamp,
    uint toTimestamp
  ) internal pure returns (uint _seconds) {
    require(fromTimestamp <= toTimestamp);
    _seconds = toTimestamp - fromTimestamp;
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.7.6;

import './interfaces/IRewardsTracker.sol';
import './libraries/BokkyPooBahsDateTimeLibrary.sol';

contract RewardsTracker is IRewardsTracker {
  uint256 constant MULTIPLIER = 10 ** 36;
  address public token;
  uint256 public totalStakedUsers;
  uint256 public totalSharesDeposited;

  struct Share {
    uint256 amount;
    uint256 stakedTime;
  }
  struct Reward {
    uint256 totalExcluded;
    uint256 totalRealized;
  }
  mapping(address => Share) private shares;
  mapping(address => Reward) public rewards;

  uint256 public rewardsPerShare;
  uint256 public totalDistributed;
  uint256 public totalRewards;
  mapping(uint256 => uint256) public monthlyRewards;

  event AddShares(address indexed user, uint256 amount);
  event RemoveShares(address indexed user, uint256 amount);
  event ClaimReward(address user);
  event DistributeReward(address indexed user, uint256 amount);
  event DepositRewards(address indexed user, uint256 amountTokens);

  modifier onlyToken() {
    require(msg.sender == token, 'ONLYTOKEN');
    _;
  }

  constructor(address _token) {
    token = _token;
  }

  function setShare(
    address shareholder,
    uint256 balanceUpdate,
    bool isRemoving
  ) public override onlyToken {
    _setShare(shareholder, balanceUpdate, isRemoving);
  }

  function _setShare(
    address shareholder,
    uint256 balanceUpdate,
    bool isRemoving
  ) internal {
    if (isRemoving) {
      _removeShares(shareholder, balanceUpdate);
      emit RemoveShares(shareholder, balanceUpdate);
    } else {
      _addShares(shareholder, balanceUpdate);
      emit AddShares(shareholder, balanceUpdate);
    }
  }

  function _addShares(address shareholder, uint256 amount) private {
    if (shares[shareholder].amount > 0) {
      _distributeReward(shareholder);
    }

    uint256 sharesBefore = shares[shareholder].amount;

    totalSharesDeposited += amount;
    shares[shareholder].amount += amount;
    shares[shareholder].stakedTime = block.timestamp;
    if (sharesBefore == 0 && shares[shareholder].amount > 0) {
      totalStakedUsers++;
    }
    rewards[shareholder].totalExcluded = _cumulativeRewards(
      shares[shareholder].amount
    );
  }

  function _removeShares(address shareholder, uint256 amount) private {
    require(
      shares[shareholder].amount > 0 && amount <= shares[shareholder].amount,
      'REMOVE: no shares'
    );
    _distributeReward(shareholder);

    totalSharesDeposited -= amount;
    shares[shareholder].amount -= amount;
    if (shares[shareholder].amount == 0) {
      totalStakedUsers--;
    }
    rewards[shareholder].totalExcluded = _cumulativeRewards(
      shares[shareholder].amount
    );
  }

  function depositRewards() external payable override {
    _depositRewards(msg.value);
  }

  function _depositRewards(uint256 _amount) internal {
    require(_amount > 0, 'DEPOSIT: no ETH');
    require(totalSharesDeposited > 0, 'DEPOSIT: no shares');

    totalRewards += _amount;
    uint256 _month = beginningOfMonth(block.timestamp);
    monthlyRewards[_month] += _amount;
    rewardsPerShare += (MULTIPLIER * _amount) / totalSharesDeposited;
    emit DepositRewards(msg.sender, _amount);
  }

  function _distributeReward(address shareholder) internal {
    if (shares[shareholder].amount == 0) {
      return;
    }

    uint256 amount = getUnpaid(shareholder);
    rewards[shareholder].totalRealized += amount;
    rewards[shareholder].totalExcluded = _cumulativeRewards(
      shares[shareholder].amount
    );

    if (amount > 0) {
      totalDistributed += amount;
      uint256 _balBefore = address(this).balance;
      (bool success, ) = payable(shareholder).call{ value: amount }('');
      require(success, 'DIST: could not distribute');
      require(address(this).balance >= _balBefore - amount, 'DIST: too much');
      emit DistributeReward(shareholder, amount);
    }
  }

  function claimReward() external override {
    _distributeReward(msg.sender);
    emit ClaimReward(msg.sender);
  }

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

  function beginningOfMonth(uint256 _timestamp) public view returns (uint256) {
    (, , uint256 _dayOfMonth) = BokkyPooBahsDateTimeLibrary.timestampToDate(
      _timestamp
    );
    return
      _timestamp - ((_dayOfMonth - 1) * 24 * 60 * 60) - (_timestamp % 1 days);
  }

  function _cumulativeRewards(uint256 share) internal view returns (uint256) {
    return (share * rewardsPerShare) / MULTIPLIER;
  }

  function getShares(address user) external view override returns (uint256) {
    return shares[user].amount;
  }
}

{
  "metadata": {
    "bytecodeHash": "none"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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00000000000000000000000085225ed797fd4128ac45a992c46ea4681a7a15da

-----Decoded View---------------
Arg [0] : _hype (address): 0x85225Ed797fd4128Ac45A992C46eA4681a7A15dA

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000085225ed797fd4128ac45a992c46ea4681a7a15da