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

// ====================================================================
// |     ______                   _______                             |
// |    / _____________ __  __   / ____(_____  ____ _____  ________   |
// |   / /_  / ___/ __ `| |/_/  / /_  / / __ \/ __ `/ __ \/ ___/ _ \  |
// |  / __/ / /  / /_/ _>  <   / __/ / / / / / /_/ / / / / /__/  __/  |
// | /_/   /_/   \__,_/_/|_|  /_/   /_/_/ /_/\__,_/_/ /_/\___/\___/   |
// |                                                                  |
// ====================================================================
// ===================== FraxtalransportOracle =======================
// ====================================================================
// Frax Finance: https://github.com/FraxFinance

// ====================================================================
import { Timelock2Step } from "frax-std/access-control/v1/Timelock2Step.sol";
import { ITimelock2Step } from "frax-std/access-control/v1/interfaces/ITimelock2Step.sol";
import { ERC165Storage } from "src/contracts/utils/ERC165Storage.sol";
import { IStateRootOracle } from "src/contracts/frax-oracle/interfaces/IStateRootOracle.sol";

/// @dev High/low prices will be equivalent
contract FraxtalTransportOracle is Timelock2Step, ERC165Storage {
    /// @notice The address of the merkle proofing contract (Trusted Relayer) which will decode
    ///         and validate the L1 storage proofs against the `L1Block` contract
    /// @dev If `PriceSource` is an EOA this oracle updated via a trusted relayer
    address public priceSource;
    /// @notice The current Oracle Price/Rate on L1
    uint256 public price;
    /// @notice The number of the last L1 block for which the values were synced
    uint96 public lastL1Block;
    /// @notice The L1 timestamp corresponding to the last time the contract was synced
    uint256 public updatedAt;

    constructor(address _timelock, address _priceSource) {
        _setTimelock({ _newTimelock: _timelock });
        _registerInterface({ interfaceId: type(ITimelock2Step).interfaceId });
        priceSource = _priceSource;
    }

    // ====================================================================
    // Internal Configuration Setters
    // ====================================================================

    /// @notice The ```_setPriceSource``` function sets the price source
    /// @param _newPriceSource The new price source
    function _setPriceSource(address _newPriceSource) internal {
        address _priceSource = priceSource;
        if (_priceSource == _newPriceSource) revert SamePriceSource();
        emit SetPriceSource({ oldPriceSource: _priceSource, newPriceSource: _newPriceSource });
        priceSource = _newPriceSource;
    }

    // ====================================================================
    // Configuration Setters
    // ====================================================================

    /// @notice The ```setPriceSource``` function sets the price source
    /// @dev Requires msg.sender to be the timelock address
    /// @param _newPriceSource The new price source address
    function setPriceSource(address _newPriceSource) external {
        _requireTimelock();
        _setPriceSource({ _newPriceSource: _newPriceSource });
    }

    // ====================================================================
    // View Helpers
    // ====================================================================

    /// @notice The ```description``` function returns the description of the contract
    /// @return _description The description of the contract
    function description() external pure returns (string memory _description) {
        _description = "RsEth: Rate Transport";
    }

    function name() external pure returns (string memory _name) {
        _name = "RsEth: Rate Transport";
    }

    /// @notice The ```decimals``` function returns the decimals of the oracle response
    /// @return _decimals The decimals corresponding to the L1 Answer
    function decimals() external pure returns (uint8 _decimals) {
        _decimals = 18;
    }

    // ====================================================================
    // Pricing Functions
    // ====================================================================

    /// @notice The ```getPrices``` function is intended to return two prices from different oracles
    /// @return isBadData is true when data is stale or otherwise bad
    /// @return _priceLow is the lower of the two prices
    /// @return _priceHigh is the higher of the two prices
    function _getPrices() internal view returns (bool isBadData, uint256 _priceLow, uint256 _priceHigh) {
        isBadData = false;
        _priceLow = _priceHigh = price;
    }

    /// @notice The ```getPrices``` function is intended to return two prices from different oracles
    /// @return isBadData is true when data is stale or otherwise bad
    /// @return _priceLow is the lower of the two prices
    /// @return _priceHigh is the higher of the two prices
    function getPrices() external view returns (bool isBadData, uint256 _priceLow, uint256 _priceHigh) {
        (isBadData, _priceLow, _priceHigh) = _getPrices();
    }

    /// @dev Adheres to chainlink's AggregatorV3Interface
    /// @return _roundId The l1Block corresponding to the last time the oracle was proofed
    /// @return _answer The price on L1
    /// @return _startedAt The current timestamp
    /// @return _updatedAt The current timestamp
    /// @return _answeredInRound The l1Block corresponding to the last time the oracle was proofed
    function latestRoundData()
        external
        view
        returns (uint80 _roundId, int256 _answer, uint256 _startedAt, uint256 _updatedAt, uint80 _answeredInRound)
    {
        _answeredInRound = _roundId = uint80(lastL1Block);
        _startedAt = _updatedAt = updatedAt;
        _answer = int256(price);
        if (_answer < 0) revert CastError();
        if (_roundId < 0) revert CastError();
    }

    /// @notice ```getRate``` returns the price pushed to the oracle
    /// @return rate The rate of RsEtH per Eth underlying
    function getRate() external view returns (uint256 rate) {
        rate = price;
    }

    /// @notice ```pricePershare``` returns the price pushed to the oracle
    /// @return sharePrice The rate of RsEtH per Eth underlying
    function pricePerShare() external view returns (uint256 sharePrice) {
        sharePrice = price;
    }

    // ====================================================================
    // Relay functions from merkle prover (Trusted Relayer)
    // ====================================================================

    /// @notice ```updateRsEthOracle``` function will update the price reported by this oracle
    /// @param _l1BlockNumber The l1 Block Number corresponding to the price pushed to the oracle
    /// @param _l1Timestamp   The l1 Timestamp corresponding to the price pushed to the oracle
    /// @param _price         The price being pushed to the oracle which is on the L1
    function updateRsEthOracle(uint96 _l1BlockNumber, uint256 _l1Timestamp, uint256 _price) external {
        if (msg.sender != priceSource) revert OnlyPriceSource();
        if (_l1BlockNumber < lastL1Block) revert StalePush();
        if (_l1Timestamp < updatedAt) revert StalePush();
        price = _price;
        lastL1Block = _l1BlockNumber;
        updatedAt = _l1Timestamp;
        emit PriceDataUpdated(_l1BlockNumber, _l1Timestamp, _price);
    }

    // ====================================================================
    // Events
    // ====================================================================

    /// @notice The ```SetPriceSource``` event is emitted when the price source is set
    /// @param oldPriceSource The old price source address
    /// @param newPriceSource The new price source address
    event SetPriceSource(address oldPriceSource, address newPriceSource);

    /// @notice The ```PriceDataUpdated``` event is emitted when the price from L1 is pushed to L2
    /// @param l1Block     The L1 Block at which the rate is updated
    /// @param l1Timestamp The L1 Timestamp at which the rate is updated
    /// @param rate        The Price which is being pushed to the L2
    event PriceDataUpdated(uint96 l1Block, uint256 l1Timestamp, uint256 rate);

    // ====================================================================
    // Errors
    // ====================================================================

    error OnlyPriceSource();
    error SamePriceSource();
    error StalePush();
    error CastError();
}

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

// ====================================================================
// |     ______                   _______                             |
// |    / _____________ __  __   / ____(_____  ____ _____  ________   |
// |   / /_  / ___/ __ `| |/_/  / /_  / / __ \/ __ `/ __ \/ ___/ _ \  |
// |  / __/ / /  / /_/ _>  <   / __/ / / / / / /_/ / / / / /__/  __/  |
// | /_/   /_/   \__,_/_/|_|  /_/   /_/_/ /_/\__,_/_/ /_/\___/\___/   |
// |                                                                  |
// ====================================================================
// ========================== Timelock2Step ===========================
// ====================================================================
// Frax Finance: https://github.com/FraxFinance

// Primary Author
// Drake Evans: https://github.com/DrakeEvans

// Reviewers
// Dennis: https://github.com/denett

// ====================================================================

/// @title Timelock2Step
/// @author Drake Evans (Frax Finance) https://github.com/drakeevans
/// @dev Inspired by the OpenZeppelin's Ownable2Step contract
/// @notice  An abstract contract which contains 2-step transfer and renounce logic for a timelock address
abstract contract Timelock2Step {
    /// @notice The pending timelock address
    address public pendingTimelockAddress;

    /// @notice The current timelock address
    address public timelockAddress;

    constructor() {
        timelockAddress = msg.sender;
    }

    /// @notice Emitted when timelock is transferred
    error OnlyTimelock();

    /// @notice Emitted when pending timelock is transferred
    error OnlyPendingTimelock();

    /// @notice The ```TimelockTransferStarted``` event is emitted when the timelock transfer is initiated
    /// @param previousTimelock The address of the previous timelock
    /// @param newTimelock The address of the new timelock
    event TimelockTransferStarted(address indexed previousTimelock, address indexed newTimelock);

    /// @notice The ```TimelockTransferred``` event is emitted when the timelock transfer is completed
    /// @param previousTimelock The address of the previous timelock
    /// @param newTimelock The address of the new timelock
    event TimelockTransferred(address indexed previousTimelock, address indexed newTimelock);

    /// @notice The ```_isSenderTimelock``` function checks if msg.sender is current timelock address
    /// @return Whether or not msg.sender is current timelock address
    function _isSenderTimelock() internal view returns (bool) {
        return msg.sender == timelockAddress;
    }

    /// @notice The ```_requireTimelock``` function reverts if msg.sender is not current timelock address
    function _requireTimelock() internal view {
        if (msg.sender != timelockAddress) revert OnlyTimelock();
    }

    /// @notice The ```_isSenderPendingTimelock``` function checks if msg.sender is pending timelock address
    /// @return Whether or not msg.sender is pending timelock address
    function _isSenderPendingTimelock() internal view returns (bool) {
        return msg.sender == pendingTimelockAddress;
    }

    /// @notice The ```_requirePendingTimelock``` function reverts if msg.sender is not pending timelock address
    function _requirePendingTimelock() internal view {
        if (msg.sender != pendingTimelockAddress) revert OnlyPendingTimelock();
    }

    /// @notice The ```_transferTimelock``` function initiates the timelock transfer
    /// @dev This function is to be implemented by a public function
    /// @param _newTimelock The address of the nominated (pending) timelock
    function _transferTimelock(address _newTimelock) internal {
        pendingTimelockAddress = _newTimelock;
        emit TimelockTransferStarted(timelockAddress, _newTimelock);
    }

    /// @notice The ```_acceptTransferTimelock``` function completes the timelock transfer
    /// @dev This function is to be implemented by a public function
    function _acceptTransferTimelock() internal {
        pendingTimelockAddress = address(0);
        _setTimelock(msg.sender);
    }

    /// @notice The ```_setTimelock``` function sets the timelock address
    /// @dev This function is to be implemented by a public function
    /// @param _newTimelock The address of the new timelock
    function _setTimelock(address _newTimelock) internal {
        emit TimelockTransferred(timelockAddress, _newTimelock);
        timelockAddress = _newTimelock;
    }

    /// @notice The ```transferTimelock``` function initiates the timelock transfer
    /// @dev Must be called by the current timelock
    /// @param _newTimelock The address of the nominated (pending) timelock
    function transferTimelock(address _newTimelock) external virtual {
        _requireTimelock();
        _transferTimelock(_newTimelock);
    }

    /// @notice The ```acceptTransferTimelock``` function completes the timelock transfer
    /// @dev Must be called by the pending timelock
    function acceptTransferTimelock() external virtual {
        _requirePendingTimelock();
        _acceptTransferTimelock();
    }

    /// @notice The ```renounceTimelock``` function renounces the timelock after setting pending timelock to current timelock
    /// @dev Pending timelock must be set to current timelock before renouncing, creating a 2-step renounce process
    function renounceTimelock() external virtual {
        _requireTimelock();
        _requirePendingTimelock();
        _transferTimelock(address(0));
        _setTimelock(address(0));
    }
}

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

interface ITimelock2Step {
    event TimelockTransferStarted(address indexed previousTimelock, address indexed newTimelock);
    event TimelockTransferred(address indexed previousTimelock, address indexed newTimelock);

    function acceptTransferTimelock() external;

    function pendingTimelockAddress() external view returns (address);

    function renounceTimelock() external;

    function timelockAddress() external view returns (address);

    function transferTimelock(address _newTimelock) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165Storage.sol)
pragma solidity ^0.8.0;

import { ERC165 } from "@openzeppelin/contracts/utils/introspection/ERC165.sol";

/**
 * @dev Storage based implementation of the {IERC165} interface.
 *
 * Contracts may inherit from this and call {_registerInterface} to declare
 * their support of an interface.
 */
abstract contract ERC165Storage is ERC165 {
    /**
     * @dev Mapping of interface ids to whether or not it's supported.
     */
    mapping(bytes4 => bool) private _supportedInterfaces;

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

    /**
     * @dev Registers the contract as an implementer of the interface defined by
     * `interfaceId`. Support of the actual ERC165 interface is automatic and
     * registering its interface id is not required.
     *
     * See {IERC165-supportsInterface}.
     *
     * Requirements:
     *
     * - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`).
     */
    function _registerInterface(bytes4 interfaceId) internal virtual {
        require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
        _supportedInterfaces[interfaceId] = true;
    }
}

// SPDX-License-Identifier: ISC
pragma solidity ^0.8.20;

interface IStateRootOracle {
    struct BlockInfo {
        bytes32 stateRootHash;
        uint40 timestamp;
    }

    function getBlockInfo(uint256 blockNumber) external view returns (BlockInfo memory _blockInfo);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/ERC165.sol)

pragma solidity ^0.8.20;

import {IERC165} from "./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);
 * }
 * ```
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/IERC165.sol)

pragma solidity ^0.8.20;

/**
 * @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);
}

{
  "remappings": [
    "ds-test/=node_modules/ds-test/src/",
    "forge-std/=node_modules/forge-std/src/",
    "frax-std/=node_modules/frax-standard-solidity/src/",
    "script/=src/script/",
    "src/=src/",
    "test/=src/test/",
    "interfaces/=src/contracts/interfaces/",
    "arbitrum/=node_modules/@arbitrum/",
    "rlp/=node_modules/solidity-rlp/contracts/",
    "@solmate/=node_modules/@rari-capital/solmate/src/",
    "@arbitrum/=node_modules/@arbitrum/",
    "@chainlink/=node_modules/@chainlink/",
    "@mean-finance/=node_modules/@mean-finance/",
    "@openzeppelin/=node_modules/@openzeppelin/",
    "@rari-capital/=node_modules/@rari-capital/",
    "@uniswap/=node_modules/@uniswap/",
    "dev-fraxswap/=node_modules/dev-fraxswap/",
    "frax-standard-solidity/=node_modules/frax-standard-solidity/",
    "prb-math/=node_modules/prb-math/",
    "solidity-bytes-utils/=node_modules/solidity-bytes-utils/",
    "solidity-rlp/=node_modules/solidity-rlp/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 1000000
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "none",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "shanghai",
  "viaIR": false,
  "libraries": {}
}

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000000000000000000000000c16068d1ca7e24e20e56bb70af4d00d92aa4f0b20000000000000000000000005bac02527bbaa82453c0f93b8e3deab8ad0c8dac

-----Decoded View---------------
Arg [0] : _timelock (address): 0xc16068d1ca7E24E20e56bB70af4D00D92AA4f0b2
Arg [1] : _priceSource (address): 0x5bac02527BbAA82453c0F93b8e3DEab8AD0c8DAc

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000c16068d1ca7e24e20e56bb70af4d00d92aa4f0b2
Arg [1] : 0000000000000000000000005bac02527bbaa82453c0f93b8e3deab8ad0c8dac