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

import {BaseChainlinkOracle} from "./BaseChainlinkOracle.sol";
import {AggregatorV3Interface} from "../../external/AggregatorV3Interface.sol";
import {Common} from "../../libraries/Common.sol";
import {Constants} from "../../libraries/helpers/Constants.sol";

/// @title ChainlinkOracle
/// @notice PriceOracle adapter for Chainlink push-based price feeds.
contract ChainlinkOracle is BaseChainlinkOracle {
    /// @notice The max staleness mapped to feed address.
    mapping(address => uint256) public feedToMaxStaleness;
    /// @dev Used for correcting for the decimals of base and quote.
    uint8 public constant QUOTE_DECIMALS = 18;
    /// @notice Name of the oracle.
    string public constant name = "Chainlink sBold V1";
    /// @notice The address of the token to USD.
    Feed public feed;

    /// @notice Deploys a Chainlink price oracle.
    /// @param _base The address of the base asset.
    /// @param _feed The structure for the ETH to USD feed.
    constructor(address _base, Feed memory _feed) {
        Common.revertZeroAddress(_base);
        Common.revertZeroAddress(_feed.addr);

        if (_feed.maxStaleness < MAX_STALENESS_LOWER_BOUND || _feed.maxStaleness > MAX_STALENESS_UPPER_BOUND) {
            revert InvalidMaxStaleness();
        }

        base = _base;
        feed = _feed;
    }

    /// @inheritdoc BaseChainlinkOracle
    function getQuote(uint256 inAmount, address _base) external view override returns (uint256) {
        if (!isBaseSupported(_base)) revert InvalidFeed();

        uint256 baseToUsdPrice = _getLatestAnswer(feed);

        return (inAmount * baseToUsdPrice) / 10 ** Constants.ORACLE_PRICE_PRECISION;
    }

    /// @inheritdoc BaseChainlinkOracle
    function isBaseSupported(address _base) public view override returns (bool) {
        return base == _base;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.0;

/// @title AggregatorV3Interface
/// @author smartcontractkit (https://github.com/smartcontractkit/chainlink/blob/e87b83cd78595c09061c199916c4bb9145e719b7/contracts/src/v0.8/shared/interfaces/AggregatorV3Interface.sol)
/// @notice Partial interface for Chainlink Data Feeds.
interface AggregatorV3Interface {
    /// @notice Returns the feed's decimals.
    /// @return The decimals of the feed.
    function decimals() external view returns (uint8);

    /// @notice Get data about the latest round.
    /// @return roundId The round ID from the aggregator for which the data was retrieved.
    /// @return answer The answer for the given round.
    /// @return startedAt The timestamp when the round was started.
    /// (Only some AggregatorV3Interface implementations return meaningful values)
    /// @return updatedAt The timestamp when the round last was updated (i.e. answer was last computed).
    /// @return answeredInRound is the round ID of the round in which the answer was computed.
    function latestRoundData()
        external
        view
        returns (uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound);
}

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

/// @title IPriceOracle

/// @notice PriceOracle interface.
interface ICommon {
    /*//////////////////////////////////////////////////////////////
                                 ERRORS
    //////////////////////////////////////////////////////////////*/

    error InvalidAddress();
}

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

/// @title IPriceOracle
/// @notice PriceOracle interface.
interface IPriceOracle {
    /*//////////////////////////////////////////////////////////////
                                 ERRORS
    //////////////////////////////////////////////////////////////*/

    error InvalidMaxStalenessUpperBound();

    error InvalidMaxStaleness();

    error InvalidMaxConfWidthLowerBound();

    error InvalidFeed();

    error InvalidBaseDecimals();

    error TooStalePrice();

    error TooAheadPrice();

    error InvalidPrice();

    error InvalidPriceExponent();

    error DuplicateFeed();

    /*//////////////////////////////////////////////////////////////
                                 FUNCTIONS
    //////////////////////////////////////////////////////////////*/

    /// @notice Check if the `base` token is supported.
    /// @param base The token that is being priced.
    /// @return The boolean if the token is supported.
    function isBaseSupported(address base) external view returns (bool);

    /// @notice Fetch the latest price and transform it to a quote.
    /// @param inAmount The amount of `base` to convert.
    /// @return outAmount The amount of `quote` that is equivalent to `inAmount` of `base`.
    function getQuote(uint256 inAmount, address base) external view returns (uint256 outAmount);
}

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

import {ICommon} from "../interfaces/ICommon.sol";

library Common {
    function revertZeroAddress(address _address) internal pure {
        if (_address == address(0)) revert ICommon.InvalidAddress();
    }
}

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

/// @title Constants
/// @notice Presents common constants.
library Constants {
    /// @notice The maximum value in BPS.
    uint256 internal constant BPS_DENOMINATOR = 10_000;
    /// @notice The maximum fee on deposit in BPS.
    uint256 internal constant BPS_MAX_DEPOSIT_FEE = 500;
    /// @notice The maximum fee in BPS.
    uint256 internal constant BPS_MAX_FEE = 250;
    /// @notice The minimum reward in BPS.
    uint256 internal constant BPS_MAX_REWARD = 250;
    /// @notice The upper boundary for maximum slippage tolerance in BPS.
    uint256 internal constant BPS_MAX_SLIPPAGE = 500;
    /// @notice The upper boundary for maximum collateral denominated in $BOLD.
    uint256 internal constant MAX_COLL_IN_BOLD_UPPER_BOUND = 1_000_000e18;
    /// @notice The price precision returned from oracle.
    uint256 internal constant ORACLE_PRICE_PRECISION = 18;
}

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

import {IPriceOracle} from "../../interfaces/IPriceOracle.sol";
import {AggregatorV3Interface} from "../../external/AggregatorV3Interface.sol";
import {Common} from "../../libraries/Common.sol";
import {Constants} from "../../libraries/helpers/Constants.sol";

/// @title BaseChainlinkOracle
/// @notice Base adaptation for Chainlink price oracle.
contract BaseChainlinkOracle is IPriceOracle {
    /// @notice The feed structure for price oracle adapters.
    struct Feed {
        address addr;
        uint96 maxStaleness;
    }

    /// @notice The minimum permitted value for `maxStaleness`.
    uint256 internal constant MAX_STALENESS_LOWER_BOUND = 1 minutes;
    /// @notice The maximum permitted value for `maxStaleness`.
    uint256 internal constant MAX_STALENESS_UPPER_BOUND = 72 hours;
    /// @notice The address of the asset.
    address public immutable base;

    /// @inheritdoc IPriceOracle
    function getQuote(uint256 inAmount, address _base) external view virtual returns (uint256) {}

    /// @inheritdoc IPriceOracle
    function isBaseSupported(address _base) external view virtual returns (bool) {}

    /// @notice Returns scaled aggregator price for feed.
    function _getLatestAnswer(Feed memory _feed) internal view returns (uint256) {
        AggregatorV3Interface feedInstance = AggregatorV3Interface(_feed.addr);

        // Price validity check
        (, int256 answer, , uint256 updatedAt, ) = feedInstance.latestRoundData();
        if (answer <= 0) revert InvalidPrice();

        // Staleness check
        uint256 staleness = block.timestamp - updatedAt;
        if (staleness > _feed.maxStaleness) revert TooStalePrice();

        // Return scaled price
        return _scale(answer, feedInstance.decimals());
    }

    /// @notice Returns scaled price with precision of 18.
    function _scale(int256 _price, uint256 _decimals) private pure returns (uint256) {
        return uint256(_price) * 10 ** (Constants.ORACLE_PRICE_PRECISION - _decimals);
    }
}

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

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000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc20000000000000000000000005f4ec3df9cbd43714fe2740f5e3616155c5b84190000000000000000000000000000000000000000000000000000000000000e10

-----Decoded View---------------
Arg [0] : _base (address): 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2
Arg [1] : _feed (tuple): 
     Arg [1] : addr (address): 0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419
     Arg [2] : maxStaleness (uint96): 3600


-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2
Arg [1] : 0000000000000000000000005f4ec3df9cbd43714fe2740f5e3616155c5b8419
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000e10