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// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;

import {Common} from "@chainlink/contracts/src/v0.8/llo-feeds/libraries/Common.sol";
import {IVerifierFeeManager} from "@chainlink/contracts/src/v0.8/llo-feeds/v0.3.0/interfaces/IVerifierFeeManager.sol";
import {IERC20} from "@chainlink/contracts/src/v0.8/vendor/openzeppelin-solidity/v4.8.3/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@chainlink/contracts/src/v0.8/vendor/openzeppelin-solidity/v4.8.3/contracts/token/ERC20/utils/SafeERC20.sol";

interface IVerifierProxy {
	/**
	 * @notice Route a report to the correct verifier and (optionally) bill fees.
	 * @param payload           Full report payload (header + signed report).
	 * @param parameterPayload  ABI-encoded fee metadata.
	 */
	function verify(
		bytes calldata payload,
		bytes calldata parameterPayload
	) external payable returns (bytes memory verifierResponse);

	function verifyBulk(
		bytes[] calldata payloads,
		bytes calldata parameterPayload
	) external payable returns (bytes[] memory verifiedReports);

	function s_feeManager() external view returns (IVerifierFeeManager);
}

interface IFeeManager {
	/**
	 * @return fee, reward, totalDiscount
	 */
	function getFeeAndReward(
		address subscriber,
		bytes memory unverifiedReport,
		address quoteAddress
	) external returns (Common.Asset memory, Common.Asset memory, uint256);

	function i_linkAddress() external view returns (address);

	function i_nativeAddress() external view returns (address);

	function i_rewardManager() external view returns (address);
}

contract DataStreamConsumer {
	using SafeERC20 for IERC20;

	// ----------------- Errors -----------------
	error NothingToWithdraw();
	error NotOwner(address caller);
	error InvalidReportVersion(uint16 version);
	error NotImplemented();
    error OwnableUnauthorizedAccount(address account);
    error OwnableInvalidOwner(address owner);

	// ----------------- Report schemas -----------------
	// More info: https://docs.chain.link/data-streams/reference/report-schema

	struct ReportV2 {
		bytes32 feedId;
		uint32 validFromTimestamp;
		uint32 observationsTimestamp;
		uint192 nativeFee;
		uint192 linkFee;
		uint32 expiresAt;
		int192 benchmarkPrice;
	}

	/**
	 * @dev Data Streams report schema v3 (crypto streams).
	 *      Prices, bids and asks use 8 or 18 decimals depending on the stream.
	 */
	struct ReportV3 {
		bytes32 feedId;
		uint32 validFromTimestamp;
		uint32 observationsTimestamp;
		uint192 nativeFee;
		uint192 linkFee;
		uint32 expiresAt;
		int192 price;
		int192 bid;
		int192 ask;
	}

	/**
	 * @dev Data Streams report schema v4 (RWA streams).
	 */
	struct ReportV4 {
		bytes32 feedId;
		uint32 validFromTimestamp;
		uint32 observationsTimestamp;
		uint192 nativeFee;
		uint192 linkFee;
		uint32 expiresAt;
		int192 price;
		uint32 marketStatus;
	}

	struct OracleData {
		uint80 roundId;
		int256 answer;
		uint256 startedAt;
		uint256 updatedAt;
		uint80 answeredInRound;
	}

	// ----------------- Storage -----------------
	IVerifierProxy public immutable verifierProxy;
	uint256 public constant version = 100;
	address internal _owner;
	mapping(bytes32 => OracleData) private oracleData;
	mapping(address => bytes32) private feedIdByMiddleware;

	// ----------------- Events -----------------
	event DecodedPrice(bytes32 indexed feedId, int256 price);
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

	// ----------------- Constructor / modifier -----------------
	/**
	 * @param _verifierProxy Address of the VerifierProxy on the target network.
	 *        Addresses: https://docs.chain.link/data-streams/crypto-streams
	 */
	constructor(address _verifierProxy) {
		verifierProxy = IVerifierProxy(_verifierProxy);
		_owner = msg.sender;
	}

	/**
     * @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 {
        if (owner() != msg.sender) {
            revert OwnableUnauthorizedAccount(msg.sender);
        }
    }

    /**
     * @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 {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _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);
    }

	// ----------------- Public API -----------------

	/**
	 * @notice Verify a Data Streams report (schema v3 or v4).
	 *
	 * @dev Steps:
	 *  1. Decode the unverified report to get `reportData`.
	 *  2. Read the first two bytes → schema version (`0x0003` or `0x0004`).
	 *     - Revert if the version is unsupported.
	 *  3. Fee handling:
	 *     - Query `s_feeManager()` on the proxy.
	 *       – Non-zero → quote the fee, approve the RewardManager,
	 *         ABI-encode the fee token address for `verify()`.
	 *       – Zero     → no FeeManager; skip quoting/approval and pass `""`.
	 *  4. Call `VerifierProxy.verify()`.
	 *  5. Decode the verified report into the correct struct and emit the price.
	 *
	 *  @param unverifiedReport Full payload returned by Streams Direct.
	 *  @custom:reverts InvalidReportVersion when schema ≠ v3/v4.
	 */
	function verifyReport(bytes memory unverifiedReport) external {
		// ─── 1. & 2. Extract reportData and schema version ──
		(, bytes memory reportData) = abi.decode(unverifiedReport, (bytes32[3], bytes));

		uint16 reportVersion = (uint16(uint8(reportData[0])) << 8) | uint16(uint8(reportData[1]));
		if (reportVersion != 2 &&reportVersion != 3 && reportVersion != 4) revert InvalidReportVersion(reportVersion);

		// ─── 3. Fee handling ──
		IFeeManager feeManager = IFeeManager(address(verifierProxy.s_feeManager()));

		bytes memory parameterPayload;
		if (address(feeManager) != address(0)) {
			// FeeManager exists — always quote & approve
			address feeToken = feeManager.i_linkAddress();

			(Common.Asset memory fee, , ) = feeManager.getFeeAndReward(address(this), reportData, feeToken);

			IERC20(feeToken).approve(feeManager.i_rewardManager(), fee.amount);
			parameterPayload = abi.encode(feeToken);
		} else {
			// No FeeManager deployed on this chain
			parameterPayload = bytes("");
		}

		// ─── 4. Verify through the proxy ──
		bytes memory verified = verifierProxy.verify(unverifiedReport, parameterPayload);

		// ─── 5. Decode & store price ──
		if (reportVersion == 2) {
			// Schema v2 is not supported by this contract
			ReportV2 memory report = abi.decode(verified, (ReportV2));
			bytes32 feedId = report.feedId;
			OracleData storage data = oracleData[feedId];
			data.roundId = uint80(block.timestamp);
			data.answer = int256(report.benchmarkPrice);
			data.startedAt = report.validFromTimestamp;
			data.updatedAt = report.observationsTimestamp;
			data.answeredInRound = uint80(block.timestamp);

			emit DecodedPrice(feedId, int256(report.benchmarkPrice));
		} else if (reportVersion == 3) {
			ReportV3 memory report = abi.decode(verified, (ReportV3));
			bytes32 feedId = report.feedId;
			OracleData storage data = oracleData[feedId];
			data.roundId = uint80(block.timestamp);
			data.answer = report.price;
			data.startedAt = report.validFromTimestamp;
			data.updatedAt = report.observationsTimestamp;
			data.answeredInRound = uint80(block.timestamp);

			emit DecodedPrice(feedId, report.price);
		} else {
			ReportV4 memory report = abi.decode(verified, (ReportV4));
			bytes32 feedId = report.feedId;
			OracleData storage data = oracleData[feedId];
			data.roundId = uint80(block.timestamp);
			data.answer = report.price;
			data.startedAt = report.validFromTimestamp;
			data.updatedAt = report.observationsTimestamp;
			data.answeredInRound = uint80(block.timestamp);

			emit DecodedPrice(feedId, report.price);
		}
	}

	function description() external pure returns (string memory) {
		return "Chainlink Middleware for Data Streams";
	}

	function setFeedIdByMiddleware(address middleware, bytes32 feedId) external onlyOwner {
		feedIdByMiddleware[middleware] = feedId;
	}

	/**
	 * @notice Get data about a round
	 * @param _roundId the requested round ID
	 * @return roundId is the round ID from the aggregator for which the data was retrieved.
	 * @return answer is the answer for the given round
	 * @return startedAt is the timestamp when the round was started.
	 * @return updatedAt is the timestamp when the round last was updated.
	 * @return answeredInRound is the round ID of the round in which the answer was computed.
	 */
	function getRoundData(
		uint80 _roundId
	)
		external
		view
		returns (uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound)
	{
		// This function is not implemented in this contract.
		revert NotImplemented();
	}

	function latestRoundData() external view returns (uint80, int256, uint256, uint256, uint80) {
		address middleware = msg.sender;
		bytes32 feedId = feedIdByMiddleware[middleware];

		OracleData storage data = oracleData[feedId];
		return (data.roundId, data.answer, data.startedAt, data.updatedAt, data.answeredInRound);
	}

	/**
	 * @notice Withdraw all balance of an ERC-20 token held by this contract.
	 * @param _beneficiary Address that receives the tokens.
	 * @param _token       ERC-20 token address.
	 */
	function withdrawToken(address _beneficiary, address _token) external onlyOwner {
		uint256 amount = IERC20(_token).balanceOf(address(this));
		if (amount == 0) revert NothingToWithdraw();
		IERC20(_token).safeTransfer(_beneficiary, amount);
	}
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;

/*
 * @title Common
 * @author Michael Fletcher
 * @notice Common functions and structs
 */
library Common {
  // @notice The asset struct to hold the address of an asset and amount
  struct Asset {
    address assetAddress;
    uint256 amount;
  }

  // @notice Struct to hold the address and its associated weight
  struct AddressAndWeight {
    address addr;
    uint64 weight;
  }

  /**
   * @notice Checks if an array of AddressAndWeight has duplicate addresses
   * @param recipients The array of AddressAndWeight to check
   * @return bool True if there are duplicates, false otherwise
   */
  function _hasDuplicateAddresses(address[] memory recipients) internal pure returns (bool) {
    for (uint256 i = 0; i < recipients.length; ) {
      for (uint256 j = i + 1; j < recipients.length; ) {
        if (recipients[i] == recipients[j]) {
          return true;
        }
        unchecked {
          ++j;
        }
      }
      unchecked {
        ++i;
      }
    }
    return false;
  }

  /**
   * @notice Checks if an array of AddressAndWeight has duplicate addresses
   * @param recipients The array of AddressAndWeight to check
   * @return bool True if there are duplicates, false otherwise
   */
  function _hasDuplicateAddresses(Common.AddressAndWeight[] memory recipients) internal pure returns (bool) {
    for (uint256 i = 0; i < recipients.length; ) {
      for (uint256 j = i + 1; j < recipients.length; ) {
        if (recipients[i].addr == recipients[j].addr) {
          return true;
        }
        unchecked {
          ++j;
        }
      }
      unchecked {
        ++i;
      }
    }
    return false;
  }

  /**
   * @notice sorts a list of addresses numerically
   * @param arr The array of addresses to sort
   * @param left the start index
   * @param right the end index
   */
  function _quickSort(address[] memory arr, int256 left, int256 right) internal pure {
    int256 i = left;
    int256 j = right;
    if (i == j) return;
    address pivot = arr[uint256(left + (right - left) / 2)];
    while (i <= j) {
      while (uint160(arr[uint256(i)]) < uint160(pivot)) i++;
      while (uint160(pivot) < uint160(arr[uint256(j)])) j--;
      if (i <= j) {
        (arr[uint256(i)], arr[uint256(j)]) = (arr[uint256(j)], arr[uint256(i)]);
        i++;
        j--;
      }
    }
    if (left < j) _quickSort(arr, left, j);
    if (i < right) _quickSort(arr, i, right);
  }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;

import {IERC165} from "../../../vendor/openzeppelin-solidity/v4.8.3/contracts/interfaces/IERC165.sol";
import {Common} from "../../libraries/Common.sol";

interface IVerifierFeeManager is IERC165 {
  /**
   * @notice Handles fees for a report from the subscriber and manages rewards
   * @param payload report to process the fee for
   * @param parameterPayload fee payload
   * @param subscriber address of the fee will be applied
   */
  function processFee(bytes calldata payload, bytes calldata parameterPayload, address subscriber) external payable;

  /**
   * @notice Processes the fees for each report in the payload, billing the subscriber and paying the reward manager
   * @param payloads reports to process
   * @param parameterPayload fee payload
   * @param subscriber address of the user to process fee for
   */
  function processFeeBulk(
    bytes[] calldata payloads,
    bytes calldata parameterPayload,
    address subscriber
  ) external payable;

  /**
   * @notice Sets the fee recipients according to the fee manager
   * @param configDigest digest of the configuration
   * @param rewardRecipientAndWeights the address and weights of all the recipients to receive rewards
   */
  function setFeeRecipients(
    bytes32 configDigest,
    Common.AddressAndWeight[] calldata rewardRecipientAndWeights
  ) external;
}

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

pragma solidity ^0.8.0;

import "../utils/introspection/IERC165.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
  /**
   * @dev Emitted when `value` tokens are moved from one account (`from`) to
   * another (`to`).
   *
   * Note that `value` may be zero.
   */
  event Transfer(address indexed from, address indexed to, uint256 value);

  /**
   * @dev Emitted when the allowance of a `spender` for an `owner` is set by
   * a call to {approve}. `value` is the new allowance.
   */
  event Approval(address indexed owner, address indexed spender, uint256 value);

  /**
   * @dev Returns the amount of tokens in existence.
   */
  function totalSupply() external view returns (uint256);

  /**
   * @dev Returns the amount of tokens owned by `account`.
   */
  function balanceOf(address account) external view returns (uint256);

  /**
   * @dev Moves `amount` tokens from the caller's account to `to`.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * Emits a {Transfer} event.
   */
  function transfer(address to, uint256 amount) external returns (bool);

  /**
   * @dev Returns the remaining number of tokens that `spender` will be
   * allowed to spend on behalf of `owner` through {transferFrom}. This is
   * zero by default.
   *
   * This value changes when {approve} or {transferFrom} are called.
   */
  function allowance(address owner, address spender) external view returns (uint256);

  /**
   * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * IMPORTANT: Beware that changing an allowance with this method brings the risk
   * that someone may use both the old and the new allowance by unfortunate
   * transaction ordering. One possible solution to mitigate this race
   * condition is to first reduce the spender's allowance to 0 and set the
   * desired value afterwards:
   * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
   *
   * Emits an {Approval} event.
   */
  function approve(address spender, uint256 amount) external returns (bool);

  /**
   * @dev Moves `amount` tokens from `from` to `to` using the
   * allowance mechanism. `amount` is then deducted from the caller's
   * allowance.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * Emits a {Transfer} event.
   */
  function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
  /**
   * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
   * given ``owner``'s signed approval.
   *
   * IMPORTANT: The same issues {IERC20-approve} has related to transaction
   * ordering also apply here.
   *
   * Emits an {Approval} event.
   *
   * Requirements:
   *
   * - `spender` cannot be the zero address.
   * - `deadline` must be a timestamp in the future.
   * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
   * over the EIP712-formatted function arguments.
   * - the signature must use ``owner``'s current nonce (see {nonces}).
   *
   * For more information on the signature format, see the
   * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
   * section].
   */
  function permit(
    address owner,
    address spender,
    uint256 value,
    uint256 deadline,
    uint8 v,
    bytes32 r,
    bytes32 s
  ) external;

  /**
   * @dev Returns the current nonce for `owner`. This value must be
   * included whenever a signature is generated for {permit}.
   *
   * Every successful call to {permit} increases ``owner``'s nonce by one. This
   * prevents a signature from being used multiple times.
   */
  function nonces(address owner) external view returns (uint256);

  /**
   * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
   */
  // solhint-disable-next-line func-name-mixedcase
  function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/draft-IERC20Permit.sol";
import "../../../utils/Address.sol";

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

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

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

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

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

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

  function safePermit(
    IERC20Permit token,
    address owner,
    address spender,
    uint256 value,
    uint256 deadline,
    uint8 v,
    bytes32 r,
    bytes32 s
  ) internal {
    uint256 nonceBefore = token.nonces(owner);
    token.permit(owner, spender, value, deadline, v, r, s);
    uint256 nonceAfter = token.nonces(owner);
    require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
  }

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
  /**
   * @dev Returns true if `account` is a contract.
   *
   * [IMPORTANT]
   * ====
   * It is unsafe to assume that an address for which this function returns
   * false is an externally-owned account (EOA) and not a contract.
   *
   * Among others, `isContract` will return false for the following
   * types of addresses:
   *
   *  - an externally-owned account
   *  - a contract in construction
   *  - an address where a contract will be created
   *  - an address where a contract lived, but was destroyed
   * ====
   *
   * [IMPORTANT]
   * ====
   * You shouldn't rely on `isContract` to protect against flash loan attacks!
   *
   * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
   * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
   * constructor.
   * ====
   */
  function isContract(address account) internal view returns (bool) {
    // This method relies on extcodesize/address.code.length, which returns 0
    // for contracts in construction, since the code is only stored at the end
    // of the constructor execution.

    return account.code.length > 0;
  }

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

    (bool success, ) = recipient.call{value: amount}("");
    require(success, "Address: unable to send value, recipient may have reverted");
  }

  /**
   * @dev Performs a Solidity function call using a low level `call`. A
   * plain `call` is an unsafe replacement for a function call: use this
   * function instead.
   *
   * If `target` reverts with a revert reason, it is bubbled up by this
   * function (like regular Solidity function calls).
   *
   * Returns the raw returned data. To convert to the expected return value,
   * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
   *
   * Requirements:
   *
   * - `target` must be a contract.
   * - calling `target` with `data` must not revert.
   *
   * _Available since v3.1._
   */
  function functionCall(address target, bytes memory data) internal returns (bytes memory) {
    return functionCallWithValue(target, data, 0, "Address: low-level call failed");
  }

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

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

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

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

  /**
   * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
   * but performing a static call.
   *
   * _Available since v3.3._
   */
  function functionStaticCall(
    address target,
    bytes memory data,
    string memory errorMessage
  ) internal view returns (bytes memory) {
    (bool success, bytes memory returndata) = target.staticcall(data);
    return verifyCallResultFromTarget(target, success, returndata, errorMessage);
  }

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

  /**
   * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
   * but performing a delegate call.
   *
   * _Available since v3.4._
   */
  function functionDelegateCall(
    address target,
    bytes memory data,
    string memory errorMessage
  ) internal returns (bytes memory) {
    (bool success, bytes memory returndata) = target.delegatecall(data);
    return verifyCallResultFromTarget(target, success, returndata, errorMessage);
  }

  /**
   * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
   * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
   *
   * _Available since v4.8._
   */
  function verifyCallResultFromTarget(
    address target,
    bool success,
    bytes memory returndata,
    string memory errorMessage
  ) internal view returns (bytes memory) {
    if (success) {
      if (returndata.length == 0) {
        // only check isContract if the call was successful and the return data is empty
        // otherwise we already know that it was a contract
        require(isContract(target), "Address: call to non-contract");
      }
      return returndata;
    } else {
      _revert(returndata, errorMessage);
    }
  }

  /**
   * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
   * revert reason or using the provided one.
   *
   * _Available since v4.3._
   */
  function verifyCallResult(
    bool success,
    bytes memory returndata,
    string memory errorMessage
  ) internal pure returns (bytes memory) {
    if (success) {
      return returndata;
    } else {
      _revert(returndata, errorMessage);
    }
  }

  function _revert(bytes memory returndata, string memory errorMessage) private pure {
    // Look for revert reason and bubble it up if present
    if (returndata.length > 0) {
      // The easiest way to bubble the revert reason is using memory via assembly
      /// @solidity memory-safe-assembly
      assembly {
        let returndata_size := mload(returndata)
        revert(add(32, returndata), returndata_size)
      }
    } else {
      revert(errorMessage);
    }
  }
}

// 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);
}

{
  "evmVersion": "paris",
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "remappings": [],
  "viaIR": true,
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_verifierProxy","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"uint16","name":"version","type":"uint16"}],"name":"InvalidReportVersion","type":"error"},{"inputs":[],"name":"NotImplemented","type":"error"},{"inputs":[{"internalType":"address","name":"caller","type":"address"}],"name":"NotOwner","type":"error"},{"inputs":[],"name":"NothingToWithdraw","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"OwnableInvalidOwner","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"OwnableUnauthorizedAccount","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"feedId","type":"bytes32"},{"indexed":false,"internalType":"int256","name":"price","type":"int256"}],"name":"DecodedPrice","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"},{"inputs":[],"name":"description","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint80","name":"_roundId","type":"uint80"}],"name":"getRoundData","outputs":[{"internalType":"uint80","name":"roundId","type":"uint80"},{"internalType":"int256","name":"answer","type":"int256"},{"internalType":"uint256","name":"startedAt","type":"uint256"},{"internalType":"uint256","name":"updatedAt","type":"uint256"},{"internalType":"uint80","name":"answeredInRound","type":"uint80"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestRoundData","outputs":[{"internalType":"uint80","name":"","type":"uint80"},{"internalType":"int256","name":"","type":"int256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint80","name":"","type":"uint80"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"middleware","type":"address"},{"internalType":"bytes32","name":"feedId","type":"bytes32"}],"name":"setFeedIdByMiddleware","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"verifierProxy","outputs":[{"internalType":"contract IVerifierProxy","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"unverifiedReport","type":"bytes"}],"name":"verifyReport","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_beneficiary","type":"address"},{"internalType":"address","name":"_token","type":"address"}],"name":"withdrawToken","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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00000000000000000000000060faa7fac949af392dfc858f5d97e3eefa07e9eb

-----Decoded View---------------
Arg [0] : _verifierProxy (address): 0x60fAa7faC949aF392DFc858F5d97E3EEfa07E9EB

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000060faa7fac949af392dfc858f5d97e3eefa07e9eb