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// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity 0.8.17;

import "Denominations.sol";
import "FeedRegistryInterface.sol";
import "Ownable.sol";

import "IOracle.sol";

interface IAggregatorV3Interface {
    function decimals() external view returns (uint8);

    function description() external view returns (string memory);

    function version() external view returns (uint256);

    /// @notice `getRoundData` and `latestRoundData` should both raise "No data present"
    /// if they do not have data to report, instead of returning unset values
    /// which could be misinterpreted as actual reported values.
    function getRoundData(
        uint80 _roundId
    )
        external
        view
        returns (
            uint80 roundId,
            int256 answer,
            uint256 startedAt,
            uint256 updatedAt,
            uint80 answeredInRound
        );

    function latestRoundData()
        external
        view
        returns (
            uint80 roundId,
            int256 answer,
            uint256 startedAt,
            uint256 updatedAt,
            uint80 answeredInRound
        );
}

contract ChainlinkOracle is IOracle, Ownable {
    event HeartbeatUpdated(uint256 heartbeat);

    uint256 public heartbeat = 24 hours;

    FeedRegistryInterface internal constant _feedRegistry =
        FeedRegistryInterface(0x47Fb2585D2C56Fe188D0E6ec628a38b74fCeeeDf);
    address internal constant _WETH = address(0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2);
    address internal constant _CURVE_ETH = address(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE);
    uint256 internal constant _MIN_HEARTBEAT = 6 hours;

    function setHeartbeat(uint256 heartbeat_) external onlyOwner {
        require(heartbeat_ >= _MIN_HEARTBEAT, "heartbeat too low");
        require(heartbeat_ != heartbeat, "same as current");
        heartbeat = heartbeat_;
        emit HeartbeatUpdated(heartbeat_);
    }

    function isTokenSupported(address token) external view override returns (bool) {
        if (_isEth(token)) return true;
        try this.getUSDPrice(token) returns (uint256) {
            return true;
        } catch Error(string memory) {
            return false;
        }
    }

    // Prices are always provided with 18 decimals pecision
    function getUSDPrice(address token) external view returns (uint256) {
        return _getPrice(token, Denominations.USD, true);
    }

    function _getPrice(
        address token,
        address denomination,
        bool tryOtherDenomination
    ) internal view returns (uint256) {
        if (_isEth(token)) token = Denominations.ETH;
        try _feedRegistry.latestRoundData(token, denomination) returns (
            uint80,
            int256 price_,
            uint256,
            uint256 updatedAt_,
            uint80
        ) {
            require(updatedAt_ != 0, "round not complete");
            require(price_ > 0, "negative price");
            require(updatedAt_ >= block.timestamp - heartbeat, "price too old");
            return _scaleFrom(uint256(price_), _feedRegistry.decimals(token, denomination));
        } catch Error(string memory reason) {
            if (!tryOtherDenomination) revert(reason);

            if (denomination == Denominations.USD) {
                return
                    (_getPrice(token, Denominations.ETH, false) *
                        _getPrice(Denominations.ETH, Denominations.USD, false)) / 1e18;
            }
            return
                (_getPrice(token, Denominations.USD, false) * 1e18) /
                _getPrice(Denominations.ETH, Denominations.USD, false);
        }
    }

    function _scaleFrom(uint256 value, uint8 decimals) internal pure returns (uint256) {
        if (decimals == 18) return value;
        if (decimals > 18) return value / 10 ** (decimals - 18);
        else return value * 10 ** (18 - decimals);
    }

    function _isEth(address token) internal pure returns (bool) {
        return token == address(0) || token == _WETH || token == _CURVE_ETH;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

library Denominations {
  address public constant ETH = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
  address public constant BTC = 0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB;

  // Fiat currencies follow https://en.wikipedia.org/wiki/ISO_4217
  address public constant USD = address(840);
  address public constant GBP = address(826);
  address public constant EUR = address(978);
  address public constant JPY = address(392);
  address public constant KRW = address(410);
  address public constant CNY = address(156);
  address public constant AUD = address(36);
  address public constant CAD = address(124);
  address public constant CHF = address(756);
  address public constant ARS = address(32);
  address public constant PHP = address(608);
  address public constant NZD = address(554);
  address public constant SGD = address(702);
  address public constant NGN = address(566);
  address public constant ZAR = address(710);
  address public constant RUB = address(643);
  address public constant INR = address(356);
  address public constant BRL = address(986);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
pragma abicoder v2;

import "AggregatorV2V3Interface.sol";

interface FeedRegistryInterface {
  struct Phase {
    uint16 phaseId;
    uint80 startingAggregatorRoundId;
    uint80 endingAggregatorRoundId;
  }

  event FeedProposed(
    address indexed asset,
    address indexed denomination,
    address indexed proposedAggregator,
    address currentAggregator,
    address sender
  );
  event FeedConfirmed(
    address indexed asset,
    address indexed denomination,
    address indexed latestAggregator,
    address previousAggregator,
    uint16 nextPhaseId,
    address sender
  );

  // V3 AggregatorV3Interface

  function decimals(address base, address quote) external view returns (uint8);

  function description(address base, address quote) external view returns (string memory);

  function version(address base, address quote) external view returns (uint256);

  function latestRoundData(address base, address quote)
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );

  function getRoundData(
    address base,
    address quote,
    uint80 _roundId
  )
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );

  // V2 AggregatorInterface

  function latestAnswer(address base, address quote) external view returns (int256 answer);

  function latestTimestamp(address base, address quote) external view returns (uint256 timestamp);

  function latestRound(address base, address quote) external view returns (uint256 roundId);

  function getAnswer(
    address base,
    address quote,
    uint256 roundId
  ) external view returns (int256 answer);

  function getTimestamp(
    address base,
    address quote,
    uint256 roundId
  ) external view returns (uint256 timestamp);

  // Registry getters

  function getFeed(address base, address quote) external view returns (AggregatorV2V3Interface aggregator);

  function getPhaseFeed(
    address base,
    address quote,
    uint16 phaseId
  ) external view returns (AggregatorV2V3Interface aggregator);

  function isFeedEnabled(address aggregator) external view returns (bool);

  function getPhase(
    address base,
    address quote,
    uint16 phaseId
  ) external view returns (Phase memory phase);

  // Round helpers

  function getRoundFeed(
    address base,
    address quote,
    uint80 roundId
  ) external view returns (AggregatorV2V3Interface aggregator);

  function getPhaseRange(
    address base,
    address quote,
    uint16 phaseId
  ) external view returns (uint80 startingRoundId, uint80 endingRoundId);

  function getPreviousRoundId(
    address base,
    address quote,
    uint80 roundId
  ) external view returns (uint80 previousRoundId);

  function getNextRoundId(
    address base,
    address quote,
    uint80 roundId
  ) external view returns (uint80 nextRoundId);

  // Feed management

  function proposeFeed(
    address base,
    address quote,
    address aggregator
  ) external;

  function confirmFeed(
    address base,
    address quote,
    address aggregator
  ) external;

  // Proposed aggregator

  function getProposedFeed(address base, address quote)
    external
    view
    returns (AggregatorV2V3Interface proposedAggregator);

  function proposedGetRoundData(
    address base,
    address quote,
    uint80 roundId
  )
    external
    view
    returns (
      uint80 id,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );

  function proposedLatestRoundData(address base, address quote)
    external
    view
    returns (
      uint80 id,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );

  // Phases
  function getCurrentPhaseId(address base, address quote) external view returns (uint16 currentPhaseId);
}

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

import "AggregatorInterface.sol";
import "AggregatorV3Interface.sol";

interface AggregatorV2V3Interface is AggregatorInterface, AggregatorV3Interface {}

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

interface AggregatorInterface {
  function latestAnswer() external view returns (int256);

  function latestTimestamp() external view returns (uint256);

  function latestRound() external view returns (uint256);

  function getAnswer(uint256 roundId) external view returns (int256);

  function getTimestamp(uint256 roundId) external view returns (uint256);

  event AnswerUpdated(int256 indexed current, uint256 indexed roundId, uint256 updatedAt);

  event NewRound(uint256 indexed roundId, address indexed startedBy, uint256 startedAt);
}

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

interface AggregatorV3Interface {
  function decimals() external view returns (uint8);

  function description() external view returns (string memory);

  function version() external view returns (uint256);

  function getRoundData(uint80 _roundId)
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );

  function latestRoundData()
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );
}

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

pragma solidity ^0.8.0;

import "Context.sol";

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// 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: GPL-3.0-or-later
pragma solidity 0.8.17;

interface IOracle {
    event TokenUpdated(address indexed token, address feed, uint256 maxDelay, bool isEthPrice);

    /// @notice returns the price in USD of symbol.
    function getUSDPrice(address token) external view returns (uint256);

    /// @notice returns if the given token is supported for pricing.
    function isTokenSupported(address token) external view returns (bool);
}

{
  "evmVersion": "london",
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "libraries": {
    "ChainlinkOracle.sol": {}
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"heartbeat","type":"uint256"}],"name":"HeartbeatUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"address","name":"feed","type":"address"},{"indexed":false,"internalType":"uint256","name":"maxDelay","type":"uint256"},{"indexed":false,"internalType":"bool","name":"isEthPrice","type":"bool"}],"name":"TokenUpdated","type":"event"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"getUSDPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"heartbeat","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"isTokenSupported","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"heartbeat_","type":"uint256"}],"name":"setHeartbeat","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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