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/**SPDX-License-Identifier: BUSL-1.1

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 */
pragma solidity 0.8.16;

import "contracts/rwaOracles/IRWAOracle.sol";
import "contracts/external/openzeppelin/contracts/access/AccessControlEnumerable.sol";
import "contracts/external/openzeppelin/contracts/security/Pausable.sol";

contract RWADynamicOracle is IRWAOracle, AccessControlEnumerable, Pausable {
  uint256 public constant DAY = 1 days;

  Range[] public ranges;

  bytes32 public constant SETTER_ROLE = keccak256("SETTER_ROLE");
  bytes32 public constant PAUSER_ROLE = keccak256("PAUSER_ROLE");

  constructor(
    address admin,
    address setter,
    address pauser,
    uint256 firstRangeStart,
    uint256 firstRangeEnd,
    uint256 dailyIR,
    uint256 startPrice
  ) {
    _grantRole(DEFAULT_ADMIN_ROLE, admin);
    _grantRole(PAUSER_ROLE, pauser);
    _grantRole(SETTER_ROLE, setter);

    if (firstRangeStart >= firstRangeEnd) revert InvalidRange();
    if (firstRangeStart > block.timestamp) revert InvalidRangeStart();

    uint256 trueStart = (startPrice * ONE) / dailyIR;
    ranges.push(Range(firstRangeStart, firstRangeEnd, dailyIR, trueStart));
  }

  /*//////////////////////////////////////////////////////////////
                         Public Functions
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Function which returns the daily price of USDY given the range previously set
   *
   * @return price      The current price of USDY, in 18 decimals
   * @return timestamp  The current timestamp of the call
   */
  function getPriceData()
    external
    view
    returns (uint256 price, uint256 timestamp)
  {
    price = getPrice();
    timestamp = block.timestamp;
  }

  /**
   * @notice Function which returns the daily price of USDY given the range previously set
   *
   * @return price The current price of USDY, in 18 decimals
   *
   * @dev The Ranges are not intended to be set more than 2 ranges in advance
   *      from the current range
   */
  function getPrice() public view whenNotPaused returns (uint256 price) {
    uint256 length = ranges.length;
    for (uint256 i = length; i > 0; --i) {
      Range storage range = ranges[i - 1];
      if (range.start <= block.timestamp) {
        if (range.end <= block.timestamp) {
          return derivePrice(range, range.end - 1);
        } else {
          return derivePrice(range, block.timestamp);
        }
      }
    }
  }

  /**
   * @notice External view function which will return the price of
   *         USDY at a given point in time.
   *
   * @param timestamp The unix timestamp at which you would like
   *                  the price for
   * @dev Notice that when no historical price exists this function
   *      will return `0`
   */
  function getPriceHistorical(
    uint256 timestamp
  ) external view returns (uint256 price) {
    uint256 length = ranges.length;
    for (uint256 i = length; i > 0; --i) {
      Range storage range = ranges[i - 1];
      if (range.start <= timestamp) {
        if (range.end <= timestamp) {
          return derivePrice(range, range.end - 1);
        } else {
          return derivePrice(range, timestamp);
        }
      }
    }
  }

  /**
   * @notice External helper function used to simulate the derivation of the prices returned
   *         from the oracle, given a range and a timestamp
   *
   * @dev If you are simulating the first range, you MUST set `startTime` and `rangeStartPrice`
   * @dev If you are simulating a range > 1st then `startTime` and `rangeStartPrice` values
   *      remain unused.
   *
   * @param blockTimeStamp  The unixTimestamp of the point in time you wish to simulate
   * @param dailyIR         The daily Interest Rate for the range to simulate
   * @param endTime         The end time for the range to simulate
   * @param startTime       The start time for the range to simulate
   * @param rangeStartPrice The start price for the range to simulate
   *
   */
  function simulateRange(
    uint256 blockTimeStamp,
    uint256 dailyIR,
    uint256 endTime,
    uint256 startTime,
    uint256 rangeStartPrice
  ) external view returns (uint256 price) {
    uint256 length = ranges.length;
    Range[] memory rangeList = new Range[](length + 1);
    for (uint256 i = 0; i < length; ++i) {
      rangeList[i] = ranges[i];
    }
    if (startTime == ranges[0].start) {
      uint256 trueStart = (rangeStartPrice * ONE) / dailyIR;
      rangeList[length] = Range(startTime, endTime, dailyIR, trueStart);
    } else {
      Range memory lastRange = ranges[ranges.length - 1];
      uint256 prevClosePrice = derivePrice(lastRange, lastRange.end - 1);
      rangeList[length] = Range(
        lastRange.end,
        endTime,
        dailyIR,
        prevClosePrice
      );
    }
    for (uint256 i = 0; i < length + 1; ++i) {
      Range memory range = rangeList[(length) - i];
      if (range.start <= blockTimeStamp) {
        if (range.end <= blockTimeStamp) {
          return derivePrice(range, range.end - 1);
        } else {
          return derivePrice(range, blockTimeStamp);
        }
      }
    }
  }

  /*//////////////////////////////////////////////////////////////
                        Admin Functions
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Function that allows for an admin to set a given price range for USDY
   *
   * @param endTimestamp        The timestamp for the range to end
   * @param dailyInterestRate   The daily interest rate during said range
   */
  function setRange(
    uint256 endTimestamp,
    uint256 dailyInterestRate
  ) external onlyRole(SETTER_ROLE) {
    // Assert that dailyInterestRate is >= 1
    if (dailyInterestRate < ONE) revert InvalidInterestRate();

    Range memory lastRange = ranges[ranges.length - 1];

    // Check that the endTimestamp is greater than the last range's end time
    if (lastRange.end >= endTimestamp) revert InvalidRange();

    // Assert that the range is in whole units of days
    if ((endTimestamp - lastRange.end) % 1 days != 0) revert InvalidRange();

    uint256 prevClosePrice = derivePrice(lastRange, lastRange.end - 1);
    ranges.push(
      Range(lastRange.end, endTimestamp, dailyInterestRate, prevClosePrice)
    );
    emit RangeSet(
      ranges.length - 1,
      lastRange.end,
      endTimestamp,
      dailyInterestRate,
      prevClosePrice
    );
  }

  /**
   * @notice Function that allows for an admin to override a previously set range
   *
   * @param indexToModify           The index of the range that we want to change
   * @param newStart                The new start time for the updated range
   * @param newEnd                  The new end time for the updated range
   * @param newDailyIR              The new daily interest rate for the range to update
   * @param newPrevRangeClosePrice  The previous ranges close price
   *
   * @dev This function enforces that the range being overriden does not
   *      overlap with any other set ranges
   * @dev If closed ranges are updated, the result is a stale value for `prevRangeClosePrice`
   */
  function overrideRange(
    uint256 indexToModify,
    uint256 newStart,
    uint256 newEnd,
    uint256 newDailyIR,
    uint256 newPrevRangeClosePrice
  ) external onlyRole(DEFAULT_ADMIN_ROLE) {
    // Check that the ranges start and end time are less than each other
    if (newStart >= newEnd) revert InvalidRange();

    uint256 rangeLength = ranges.length;
    // Case 1: The range being modified is the first range
    if (indexToModify == 0) {
      // If the length of ranges is greater than 1,
      // Ensure that the newEnd time is not greater than the start time of the next range
      if (rangeLength > 1 && newEnd > ranges[indexToModify + 1].start)
        revert InvalidRange();
    }
    // Case 2: The range being modified is the last range
    else if (indexToModify == rangeLength - 1) {
      // Ensure that the newStart time is not less than the end time of the previous range
      if (newStart < ranges[indexToModify - 1].end) revert InvalidRange();
    }
    // Case 3: The range being modified is between first and last range
    else {
      // Ensure that the newStart time is not less than the end time of the previous range
      if (newStart < ranges[indexToModify - 1].end) revert InvalidRange();
      // Ensure that the newEnd time is not greater than the start time of the next range
      if (newEnd > ranges[indexToModify + 1].start) revert InvalidRange();
    }

    // Update range
    if (indexToModify == 0) {
      uint256 trueStart = (newPrevRangeClosePrice * ONE) / newDailyIR;
      ranges[indexToModify] = Range(newStart, newEnd, newDailyIR, trueStart);
    } else {
      ranges[indexToModify] = Range(
        newStart,
        newEnd,
        newDailyIR,
        newPrevRangeClosePrice
      );
    }
    emit RangeOverriden(
      indexToModify,
      newStart,
      newEnd,
      newDailyIR,
      newPrevRangeClosePrice
    );
  }

  /**
   * @notice Function to pause the oracle
   */
  function pauseOracle() external onlyRole(PAUSER_ROLE) {
    _pause();
  }

  /**
   * @notice Function to unpause the oracle
   */
  function unpauseOracle() external onlyRole(DEFAULT_ADMIN_ROLE) {
    _unpause();
  }

  /*//////////////////////////////////////////////////////////////
                        Internal Functions
  //////////////////////////////////////////////////////////////*/

  /**
   * @notice Internal helper function used to derive the price of USDY
   *
   * @param currentRange The current range to derive the price of USDY from
   * @param currentTime  The current unixTimestamp of the blockchain
   */
  function derivePrice(
    Range memory currentRange,
    uint256 currentTime
  ) internal pure returns (uint256 price) {
    uint256 elapsedDays = (currentTime - currentRange.start) / DAY;
    return
      roundUpTo8(
        _rmul(
          _rpow(currentRange.dailyInterestRate, elapsedDays + 1, ONE),
          currentRange.prevRangeClosePrice
        )
      );
  }

  /**
   * @notice internal function that will round derived price to the 8th decimal
   *         and will round 5 up
   *
   * @param value The value to round
   */
  function roundUpTo8(uint256 value) internal pure returns (uint256) {
    uint256 remainder = value % 1e10;
    if (remainder >= 0.5e10) {
      value += 1e10;
    }
    value -= remainder;
    return value;
  }

  /*//////////////////////////////////////////////////////////////
                    Structs, Events and Errors
  //////////////////////////////////////////////////////////////*/

  struct Range {
    uint256 start;
    uint256 end;
    uint256 dailyInterestRate;
    uint256 prevRangeClosePrice;
  }

  /**
   * @notice Event emitted when a range has been set
   *
   * @param start             The start time for the range
   * @param end               The end time for the range
   * @param dailyInterestRate The daily interest rate for the range
   */
  event RangeSet(
    uint256 indexed index,
    uint256 start,
    uint256 end,
    uint256 dailyInterestRate,
    uint256 prevRangeClosePrice
  );

  /**
   * @notice Event emitted when a previously set range is overriden
   *
   * @param index                  The index of the range being modified
   * @param newStart               The new start time for the modified range
   * @param newEnd                 The new end time for the modified range
   * @param newDailyInterestRate   The new dailyInterestRate for the modified range
   * @param newPrevRangeClosePrice The new prevRangeClosePrice for the modified range
   */
  event RangeOverriden(
    uint256 indexed index,
    uint256 newStart,
    uint256 newEnd,
    uint256 newDailyInterestRate,
    uint256 newPrevRangeClosePrice
  );

  error InvalidRangeStart();
  error InvalidRange();
  error InvalidInterestRate();

  /*//////////////////////////////////////////////////////////////
                Interest calculation helper functions
  //////////////////////////////////////////////////////////////*/

  // Copied from https://github.com/makerdao/dss/blob/master/src/jug.sol
  uint256 private constant ONE = 10 ** 27;

  function _rpow(
    uint256 x,
    uint256 n,
    uint256 base
  ) internal pure returns (uint256 z) {
    assembly {
      switch x
      case 0 {
        switch n
        case 0 {
          z := base
        }
        default {
          z := 0
        }
      }
      default {
        switch mod(n, 2)
        case 0 {
          z := base
        }
        default {
          z := x
        }
        let half := div(base, 2) // for rounding.
        for {
          n := div(n, 2)
        } n {
          n := div(n, 2)
        } {
          let xx := mul(x, x)
          if iszero(eq(div(xx, x), x)) {
            revert(0, 0)
          }
          let xxRound := add(xx, half)
          if lt(xxRound, xx) {
            revert(0, 0)
          }
          x := div(xxRound, base)
          if mod(n, 2) {
            let zx := mul(z, x)
            if and(iszero(iszero(x)), iszero(eq(div(zx, x), z))) {
              revert(0, 0)
            }
            let zxRound := add(zx, half)
            if lt(zxRound, zx) {
              revert(0, 0)
            }
            z := div(zxRound, base)
          }
        }
      }
    }
  }

  function _rmul(uint256 x, uint256 y) internal pure returns (uint256 z) {
    z = _mul(x, y) / ONE;
  }

  function _mul(uint256 x, uint256 y) internal pure returns (uint256 z) {
    require(y == 0 || (z = x * y) / y == x);
  }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (access/AccessControl.sol)

pragma solidity ^0.8.0;

import "contracts/external/openzeppelin/contracts/access/IAccessControl.sol";
import "contracts/external/openzeppelin/contracts/utils/Context.sol";
import "contracts/external/openzeppelin/contracts/utils/Strings.sol";
import "contracts/external/openzeppelin/contracts/utils/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
  struct RoleData {
    mapping(address => bool) members;
    bytes32 adminRole;
  }

  mapping(bytes32 => RoleData) private _roles;

  bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

  /**
   * @dev Modifier that checks that an account has a specific role. Reverts
   * with a standardized message including the required role.
   *
   * The format of the revert reason is given by the following regular expression:
   *
   *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
   *
   * _Available since v4.1._
   */
  modifier onlyRole(bytes32 role) {
    _checkRole(role, _msgSender());
    _;
  }

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

  /**
   * @dev Returns `true` if `account` has been granted `role`.
   */
  function hasRole(bytes32 role, address account)
    public
    view
    virtual
    override
    returns (bool)
  {
    return _roles[role].members[account];
  }

  /**
   * @dev Revert with a standard message if `account` is missing `role`.
   *
   * The format of the revert reason is given by the following regular expression:
   *
   *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
   */
  function _checkRole(bytes32 role, address account) internal view virtual {
    if (!hasRole(role, account)) {
      revert(
        string(
          abi.encodePacked(
            "AccessControl: account ",
            Strings.toHexString(uint160(account), 20),
            " is missing role ",
            Strings.toHexString(uint256(role), 32)
          )
        )
      );
    }
  }

  /**
   * @dev Returns the admin role that controls `role`. See {grantRole} and
   * {revokeRole}.
   *
   * To change a role's admin, use {_setRoleAdmin}.
   */
  function getRoleAdmin(bytes32 role)
    public
    view
    virtual
    override
    returns (bytes32)
  {
    return _roles[role].adminRole;
  }

  /**
   * @dev Grants `role` to `account`.
   *
   * If `account` had not been already granted `role`, emits a {RoleGranted}
   * event.
   *
   * Requirements:
   *
   * - the caller must have ``role``'s admin role.
   */
  function grantRole(bytes32 role, address account)
    public
    virtual
    override
    onlyRole(getRoleAdmin(role))
  {
    _grantRole(role, account);
  }

  /**
   * @dev Revokes `role` from `account`.
   *
   * If `account` had been granted `role`, emits a {RoleRevoked} event.
   *
   * Requirements:
   *
   * - the caller must have ``role``'s admin role.
   */
  function revokeRole(bytes32 role, address account)
    public
    virtual
    override
    onlyRole(getRoleAdmin(role))
  {
    _revokeRole(role, account);
  }

  /**
   * @dev Revokes `role` from the calling account.
   *
   * Roles are often managed via {grantRole} and {revokeRole}: this function's
   * purpose is to provide a mechanism for accounts to lose their privileges
   * if they are compromised (such as when a trusted device is misplaced).
   *
   * If the calling account had been revoked `role`, emits a {RoleRevoked}
   * event.
   *
   * Requirements:
   *
   * - the caller must be `account`.
   */
  function renounceRole(bytes32 role, address account) public virtual override {
    require(
      account == _msgSender(),
      "AccessControl: can only renounce roles for self"
    );

    _revokeRole(role, account);
  }

  /**
   * @dev Grants `role` to `account`.
   *
   * If `account` had not been already granted `role`, emits a {RoleGranted}
   * event. Note that unlike {grantRole}, this function doesn't perform any
   * checks on the calling account.
   *
   * [WARNING]
   * ====
   * This function should only be called from the constructor when setting
   * up the initial roles for the system.
   *
   * Using this function in any other way is effectively circumventing the admin
   * system imposed by {AccessControl}.
   * ====
   *
   * NOTE: This function is deprecated in favor of {_grantRole}.
   */
  function _setupRole(bytes32 role, address account) internal virtual {
    _grantRole(role, account);
  }

  /**
   * @dev Sets `adminRole` as ``role``'s admin role.
   *
   * Emits a {RoleAdminChanged} event.
   */
  function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
    bytes32 previousAdminRole = getRoleAdmin(role);
    _roles[role].adminRole = adminRole;
    emit RoleAdminChanged(role, previousAdminRole, adminRole);
  }

  /**
   * @dev Grants `role` to `account`.
   *
   * Internal function without access restriction.
   */
  function _grantRole(bytes32 role, address account) internal virtual {
    if (!hasRole(role, account)) {
      _roles[role].members[account] = true;
      emit RoleGranted(role, account, _msgSender());
    }
  }

  /**
   * @dev Revokes `role` from `account`.
   *
   * Internal function without access restriction.
   */
  function _revokeRole(bytes32 role, address account) internal virtual {
    if (hasRole(role, account)) {
      _roles[role].members[account] = false;
      emit RoleRevoked(role, account, _msgSender());
    }
  }
}

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

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
  /**
   * @dev Returns true if this contract implements the interface defined by
   * `interfaceId`. See the corresponding
   * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
   * to learn more about how these ids are created.
   *
   * This function call must use less than 30 000 gas.
   */
  function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (access/AccessControlEnumerable.sol)

pragma solidity ^0.8.0;

import "contracts/external/openzeppelin/contracts/access/IAccessControlEnumerable.sol";
import "contracts/external/openzeppelin/contracts/access/AccessControl.sol";
import "contracts/external/openzeppelin/contracts/utils/EnumerableSet.sol";

/**
 * @dev Extension of {AccessControl} that allows enumerating the members of each role.
 */
abstract contract AccessControlEnumerable is
  IAccessControlEnumerable,
  AccessControl
{
  using EnumerableSet for EnumerableSet.AddressSet;

  mapping(bytes32 => EnumerableSet.AddressSet) private _roleMembers;

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

  /**
   * @dev Returns one of the accounts that have `role`. `index` must be a
   * value between 0 and {getRoleMemberCount}, non-inclusive.
   *
   * Role bearers are not sorted in any particular way, and their ordering may
   * change at any point.
   *
   * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
   * you perform all queries on the same block. See the following
   * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
   * for more information.
   */
  function getRoleMember(bytes32 role, uint256 index)
    public
    view
    virtual
    override
    returns (address)
  {
    return _roleMembers[role].at(index);
  }

  /**
   * @dev Returns the number of accounts that have `role`. Can be used
   * together with {getRoleMember} to enumerate all bearers of a role.
   */
  function getRoleMemberCount(bytes32 role)
    public
    view
    virtual
    override
    returns (uint256)
  {
    return _roleMembers[role].length();
  }

  /**
   * @dev Overload {_grantRole} to track enumerable memberships
   */
  function _grantRole(bytes32 role, address account) internal virtual override {
    super._grantRole(role, account);
    _roleMembers[role].add(account);
  }

  /**
   * @dev Overload {_revokeRole} to track enumerable memberships
   */
  function _revokeRole(bytes32 role, address account)
    internal
    virtual
    override
  {
    super._revokeRole(role, account);
    _roleMembers[role].remove(account);
  }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
  /**
   * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
   *
   * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
   * {RoleAdminChanged} not being emitted signaling this.
   *
   * _Available since v3.1._
   */
  event RoleAdminChanged(
    bytes32 indexed role,
    bytes32 indexed previousAdminRole,
    bytes32 indexed newAdminRole
  );

  /**
   * @dev Emitted when `account` is granted `role`.
   *
   * `sender` is the account that originated the contract call, an admin role
   * bearer except when using {AccessControl-_setupRole}.
   */
  event RoleGranted(
    bytes32 indexed role,
    address indexed account,
    address indexed sender
  );

  /**
   * @dev Emitted when `account` is revoked `role`.
   *
   * `sender` is the account that originated the contract call:
   *   - if using `revokeRole`, it is the admin role bearer
   *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
   */
  event RoleRevoked(
    bytes32 indexed role,
    address indexed account,
    address indexed sender
  );

  /**
   * @dev Returns `true` if `account` has been granted `role`.
   */
  function hasRole(bytes32 role, address account) external view returns (bool);

  /**
   * @dev Returns the admin role that controls `role`. See {grantRole} and
   * {revokeRole}.
   *
   * To change a role's admin, use {AccessControl-_setRoleAdmin}.
   */
  function getRoleAdmin(bytes32 role) external view returns (bytes32);

  /**
   * @dev Grants `role` to `account`.
   *
   * If `account` had not been already granted `role`, emits a {RoleGranted}
   * event.
   *
   * Requirements:
   *
   * - the caller must have ``role``'s admin role.
   */
  function grantRole(bytes32 role, address account) external;

  /**
   * @dev Revokes `role` from `account`.
   *
   * If `account` had been granted `role`, emits a {RoleRevoked} event.
   *
   * Requirements:
   *
   * - the caller must have ``role``'s admin role.
   */
  function revokeRole(bytes32 role, address account) external;

  /**
   * @dev Revokes `role` from the calling account.
   *
   * Roles are often managed via {grantRole} and {revokeRole}: this function's
   * purpose is to provide a mechanism for accounts to lose their privileges
   * if they are compromised (such as when a trusted device is misplaced).
   *
   * If the calling account had been granted `role`, emits a {RoleRevoked}
   * event.
   *
   * Requirements:
   *
   * - the caller must be `account`.
   */
  function renounceRole(bytes32 role, address account) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControlEnumerable.sol)

pragma solidity ^0.8.0;

import "contracts/external/openzeppelin/contracts/access/IAccessControl.sol";

/**
 * @dev External interface of AccessControlEnumerable declared to support ERC165 detection.
 */
interface IAccessControlEnumerable is IAccessControl {
  /**
   * @dev Returns one of the accounts that have `role`. `index` must be a
   * value between 0 and {getRoleMemberCount}, non-inclusive.
   *
   * Role bearers are not sorted in any particular way, and their ordering may
   * change at any point.
   *
   * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
   * you perform all queries on the same block. See the following
   * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
   * for more information.
   */
  function getRoleMember(bytes32 role, uint256 index)
    external
    view
    returns (address);

  /**
   * @dev Returns the number of accounts that have `role`. Can be used
   * together with {getRoleMember} to enumerate all bearers of a role.
   */
  function getRoleMemberCount(bytes32 role) external view returns (uint256);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/Pausable.sol)

pragma solidity ^0.8.0;

import "contracts/external/openzeppelin/contracts/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 Returns true if the contract is paused, and false otherwise.
   */
  function paused() public view virtual returns (bool) {
    return _paused;
  }

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

  /**
   * @dev Modifier to make a function callable only when the contract is paused.
   *
   * Requirements:
   *
   * - The contract must be paused.
   */
  modifier whenPaused() {
    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 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 v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "contracts/external/openzeppelin/contracts/utils/IERC165.sol";

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

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

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.
 */
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)
  {
    return _values(set._inner);
  }

  // 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;

    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 on 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;

    assembly {
      result := store
    }

    return result;
  }
}

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

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
  bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

  /**
   * @dev Converts a `uint256` to its ASCII `string` decimal representation.
   */
  function toString(uint256 value) internal pure returns (string memory) {
    // Inspired by OraclizeAPI's implementation - MIT licence
    // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

    if (value == 0) {
      return "0";
    }
    uint256 temp = value;
    uint256 digits;
    while (temp != 0) {
      digits++;
      temp /= 10;
    }
    bytes memory buffer = new bytes(digits);
    while (value != 0) {
      digits -= 1;
      buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
      value /= 10;
    }
    return string(buffer);
  }

  /**
   * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
   */
  function toHexString(uint256 value) internal pure returns (string memory) {
    if (value == 0) {
      return "0x00";
    }
    uint256 temp = value;
    uint256 length = 0;
    while (temp != 0) {
      length++;
      temp >>= 8;
    }
    return toHexString(value, length);
  }

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

/**SPDX-License-Identifier: BUSL-1.1

      ▄▄█████████▄
   ╓██▀└ ,╓▄▄▄, '▀██▄
  ██▀ ▄██▀▀╙╙▀▀██▄ └██µ           ,,       ,,      ,     ,,,            ,,,
 ██ ,██¬ ▄████▄  ▀█▄ ╙█▄      ▄███▀▀███▄   ███▄    ██  ███▀▀▀███▄    ▄███▀▀███,
██  ██ ╒█▀'   ╙█▌ ╙█▌ ██     ▐██      ███  █████,  ██  ██▌    └██▌  ██▌     └██▌
██ ▐█▌ ██      ╟█  █▌ ╟█     ██▌      ▐██  ██ └███ ██  ██▌     ╟██ j██       ╟██
╟█  ██ ╙██    ▄█▀ ▐█▌ ██     ╙██      ██▌  ██   ╙████  ██▌    ▄██▀  ██▌     ,██▀
 ██ "██, ╙▀▀███████████⌐      ╙████████▀   ██     ╙██  ███████▀▀     ╙███████▀`
  ██▄ ╙▀██▄▄▄▄▄,,,                ¬─                                    '─¬
   ╙▀██▄ '╙╙╙▀▀▀▀▀▀▀▀
      ╙▀▀██████R⌐

 */
pragma solidity 0.8.16;

interface IRWAOracle {
  /// @notice Retrieve RWA price data
  function getPriceData()
    external
    view
    returns (uint256 price, uint256 timestamp);
}

{
  "libraries": {},
  "metadata": {
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 100
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

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bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"indexToModify","type":"uint256"},{"internalType":"uint256","name":"newStart","type":"uint256"},{"internalType":"uint256","name":"newEnd","type":"uint256"},{"internalType":"uint256","name":"newDailyIR","type":"uint256"},{"internalType":"uint256","name":"newPrevRangeClosePrice","type":"uint256"}],"name":"overrideRange","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"pauseOracle","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"ranges","outputs":[{"internalType":"uint256","name":"start","type":"uint256"},{"internalType":"uint256","name":"end","type":"uint256"},{"internalType":"uint256","name":"dailyInterestRate","type":"uint256"},{"internalType":"uint256","name":"prevRangeClosePrice","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"endTimestamp","type":"uint256"},{"internalType":"uint256","name":"dailyInterestRate","type":"uint256"}],"name":"setRange","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"blockTimeStamp","type":"uint256"},{"internalType":"uint256","name":"dailyIR","type":"uint256"},{"internalType":"uint256","name":"endTime","type":"uint256"},{"internalType":"uint256","name":"startTime","type":"uint256"},{"internalType":"uint256","name":"rangeStartPrice","type":"uint256"}],"name":"simulateRange","outputs":[{"internalType":"uint256","name":"price","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unpauseOracle","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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000000000000000000000000c8a7870ffe41054612f7f3433e173d8b5bfca8e3000000000000000000000000c8a7870ffe41054612f7f3433e173d8b5bfca8e3000000000000000000000000c04e1818932f24ec03457763def23475d575a44c0000000000000000000000000000000000000000000000000000000064c84b000000000000000000000000000000000000000000000000000000000064f129800000000000000000000000000000000000000000033b4a8b6e7d153e32c000000000000000000000000000000000000000000000000000000de0b6b3a7640000

-----Decoded View---------------
Arg [0] : admin (address): 0xC8A7870fFe41054612F7f3433E173D8b5bFcA8E3
Arg [1] : setter (address): 0xC8A7870fFe41054612F7f3433E173D8b5bFcA8E3
Arg [2] : pauser (address): 0xC04E1818932f24Ec03457763deF23475D575A44C
Arg [3] : firstRangeStart (uint256): 1690848000
Arg [4] : firstRangeEnd (uint256): 1693526400
Arg [5] : dailyIR (uint256): 1000133680000000000000000000
Arg [6] : startPrice (uint256): 1000000000000000000

-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 000000000000000000000000c8a7870ffe41054612f7f3433e173d8b5bfca8e3
Arg [1] : 000000000000000000000000c8a7870ffe41054612f7f3433e173d8b5bfca8e3
Arg [2] : 000000000000000000000000c04e1818932f24ec03457763def23475d575a44c
Arg [3] : 0000000000000000000000000000000000000000000000000000000064c84b00
Arg [4] : 0000000000000000000000000000000000000000000000000000000064f12980
Arg [5] : 0000000000000000000000000000000000000000033b4a8b6e7d153e32c00000
Arg [6] : 0000000000000000000000000000000000000000000000000de0b6b3a7640000