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// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.19;

import {TypeAndVersionInterface} from "../../interfaces/TypeAndVersionInterface.sol";
import {ICommitStore} from "../interfaces/ICommitStore.sol";
import {IARM} from "../interfaces/IARM.sol";
import {IPool} from "../interfaces/pools/IPool.sol";
import {IRouter} from "../interfaces/IRouter.sol";
import {IPriceRegistry} from "../interfaces/IPriceRegistry.sol";
import {IAny2EVMMessageReceiver} from "../interfaces/IAny2EVMMessageReceiver.sol";
import {IAny2EVMOffRamp} from "../interfaces/IAny2EVMOffRamp.sol";

import {Client} from "../libraries/Client.sol";
import {Internal} from "../libraries/Internal.sol";
import {RateLimiter} from "../libraries/RateLimiter.sol";
import {OCR2BaseNoChecks} from "../ocr/OCR2BaseNoChecks.sol";
import {AggregateRateLimiter} from "../AggregateRateLimiter.sol";
import {EnumerableMapAddresses} from "../../shared/enumerable/EnumerableMapAddresses.sol";

import {IERC20} from "../../vendor/openzeppelin-solidity/v4.8.0/token/ERC20/IERC20.sol";
import {Address} from "../../vendor/openzeppelin-solidity/v4.8.0/utils/Address.sol";
import {ERC165Checker} from "../../vendor/openzeppelin-solidity/v4.8.0/utils/introspection/ERC165Checker.sol";

/// @notice EVM2EVMOffRamp enables OCR networks to execute multiple messages
/// in an OffRamp in a single transaction.
/// @dev We will always deploy an onRamp, commitStore, and offRamp at the same time
/// and we will never do partial updates where e.g. only an offRamp gets replaced.
/// If we would replace only the offRamp and connect it with an existing commitStore,
/// a replay attack would be possible.
contract EVM2EVMOffRamp is IAny2EVMOffRamp, AggregateRateLimiter, TypeAndVersionInterface, OCR2BaseNoChecks {
  using Address for address;
  using ERC165Checker for address;
  using EnumerableMapAddresses for EnumerableMapAddresses.AddressToAddressMap;

  error AlreadyAttempted(uint64 sequenceNumber);
  error AlreadyExecuted(uint64 sequenceNumber);
  error ZeroAddressNotAllowed();
  error CommitStoreAlreadyInUse();
  error ExecutionError(bytes error);
  error InvalidSourceChain(uint64 sourceChainSelector);
  error MessageTooLarge(uint256 maxSize, uint256 actualSize);
  error TokenDataMismatch(uint64 sequenceNumber);
  error UnexpectedTokenData();
  error UnsupportedNumberOfTokens(uint64 sequenceNumber);
  error ManualExecutionNotYetEnabled();
  error ManualExecutionGasLimitMismatch();
  error InvalidManualExecutionGasLimit(uint256 index, uint256 newLimit);
  error RootNotCommitted();
  error UnsupportedToken(IERC20 token);
  error CanOnlySelfCall();
  error ReceiverError(bytes error);
  error TokenHandlingError(bytes error);
  error TokenRateLimitError(bytes error);
  error EmptyReport();
  error BadARMSignal();
  error InvalidMessageId();
  error InvalidTokenPoolConfig();
  error PoolAlreadyAdded();
  error PoolDoesNotExist();
  error TokenPoolMismatch();
  error InvalidNewState(uint64 sequenceNumber, Internal.MessageExecutionState newState);

  event PoolAdded(address token, address pool);
  event PoolRemoved(address token, address pool);
  // this event is needed for Atlas; if their structs/signature changes, we must update the ABIs there
  event ConfigSet(StaticConfig staticConfig, DynamicConfig dynamicConfig);
  event SkippedIncorrectNonce(uint64 indexed nonce, address indexed sender);
  event SkippedSenderWithPreviousRampMessageInflight(uint64 indexed nonce, address indexed sender);
  event ExecutionStateChanged(
    uint64 indexed sequenceNumber,
    bytes32 indexed messageId,
    Internal.MessageExecutionState state,
    bytes returnData
  );

  /// @notice Static offRamp config
  struct StaticConfig {
    address commitStore; // --------┐  CommitStore address on the destination chain
    uint64 chainSelector; // -------┘  Destination chainSelector
    uint64 sourceChainSelector; // -┐  Source chainSelector
    address onRamp; // -------------┘  OnRamp address on the source chain
    address prevOffRamp; // --------   Address of previous-version OffRamp
    address armProxy; // ------------  ARM proxy address
  }

  /// @notice Dynamic offRamp config
  /// @dev since OffRampConfig is part of OffRampConfigChanged event, if changing it, we should update the ABI on Atlas
  struct DynamicConfig {
    uint32 permissionLessExecutionThresholdSeconds; // -┐ Waiting time before manual execution is enabled
    address router; // ---------------------------------┘ Router address
    address priceRegistry; // -----┐ Price registry address
    uint16 maxTokensLength; //     | Maximum number of distinct ERC20 tokens that can be sent per message
    uint32 maxDataSize; // --------┘ Maximum payload data size
  }

  // STATIC CONFIG
  // solhint-disable-next-line chainlink-solidity/all-caps-constant-storage-variables
  string public constant override typeAndVersion = "EVM2EVMOffRamp 1.0.0";
  // The minimum amount of gas to perform the call with exact gas
  uint16 private constant GAS_FOR_CALL_EXACT_CHECK = 5_000;
  // Commit store address on the destination chain
  address internal immutable i_commitStore;
  // ChainSelector of the source chain
  uint64 internal immutable i_sourceChainSelector;
  // ChainSelector of this chain
  uint64 internal immutable i_chainSelector;
  // OnRamp address on the source chain
  address internal immutable i_onRamp;
  // metadataHash is a prefix for a message hash preimage to ensure uniqueness.
  bytes32 internal immutable i_metadataHash;
  /// @dev The address of previous-version OffRamp for this lane
  address internal immutable i_prevOffRamp;
  /// @dev The address of the arm proxy
  address internal immutable i_armProxy;

  // DYNAMIC CONFIG
  DynamicConfig internal s_dynamicConfig;
  // source token => token pool
  EnumerableMapAddresses.AddressToAddressMap private s_poolsBySourceToken;
  // dest token => token pool
  EnumerableMapAddresses.AddressToAddressMap private s_poolsByDestToken;

  // STATE
  // The expected nonce for a given sender.
  mapping(address sender => uint64 nonce) internal s_senderNonce;
  // A mapping of sequence numbers to execution state using a bitmap with each execution
  // state only taking up 2 bits of the uint256, packing 128 states into a single slot.
  // This state makes sure we never execute a message twice.
  mapping(uint64 seqNum => uint256 executionStateBitmap) internal s_executionStates;

  constructor(
    StaticConfig memory staticConfig,
    IERC20[] memory sourceTokens,
    IPool[] memory pools,
    RateLimiter.Config memory rateLimiterConfig
  ) OCR2BaseNoChecks() AggregateRateLimiter(rateLimiterConfig) {
    if (sourceTokens.length != pools.length) revert InvalidTokenPoolConfig();
    if (staticConfig.onRamp == address(0) || staticConfig.commitStore == address(0)) revert ZeroAddressNotAllowed();
    // Ensures we can never deploy a new offRamp that points to a commitStore that
    // already has roots committed.
    if (ICommitStore(staticConfig.commitStore).getExpectedNextSequenceNumber() != 1) revert CommitStoreAlreadyInUse();

    i_commitStore = staticConfig.commitStore;
    i_sourceChainSelector = staticConfig.sourceChainSelector;
    i_chainSelector = staticConfig.chainSelector;
    i_onRamp = staticConfig.onRamp;
    i_prevOffRamp = staticConfig.prevOffRamp;
    i_armProxy = staticConfig.armProxy;

    i_metadataHash = _metadataHash(Internal.EVM_2_EVM_MESSAGE_HASH);

    // Set new tokens and pools
    for (uint256 i = 0; i < sourceTokens.length; ++i) {
      s_poolsBySourceToken.set(address(sourceTokens[i]), address(pools[i]));
      s_poolsByDestToken.set(address(pools[i].getToken()), address(pools[i]));
      emit PoolAdded(address(sourceTokens[i]), address(pools[i]));
    }
  }

  // ================================================================
  // |                          Messaging                           |
  // ================================================================

  // The size of the execution state in bits
  uint256 private constant MESSAGE_EXECUTION_STATE_BIT_WIDTH = 2;
  // The mask for the execution state bits
  uint256 private constant MESSAGE_EXECUTION_STATE_MASK = (1 << MESSAGE_EXECUTION_STATE_BIT_WIDTH) - 1;

  /// @notice Returns the current execution state of a message based on its sequenceNumber.
  /// @param sequenceNumber The sequence number of the message to get the execution state for.
  /// @return The current execution state of the message.
  /// @dev we use the literal number 128 because using a constant increased gas usage.
  function getExecutionState(uint64 sequenceNumber) public view returns (Internal.MessageExecutionState) {
    return
      Internal.MessageExecutionState(
        (s_executionStates[sequenceNumber / 128] >> ((sequenceNumber % 128) * MESSAGE_EXECUTION_STATE_BIT_WIDTH)) &
          MESSAGE_EXECUTION_STATE_MASK
      );
  }

  /// @notice Sets a new execution state for a given sequence number. It will overwrite any existing state.
  /// @param sequenceNumber The sequence number for which the state will be saved.
  /// @param newState The new value the state will be in after this function is called.
  /// @dev we use the literal number 128 because using a constant increased gas usage.
  function _setExecutionState(uint64 sequenceNumber, Internal.MessageExecutionState newState) internal {
    uint256 offset = (sequenceNumber % 128) * MESSAGE_EXECUTION_STATE_BIT_WIDTH;
    uint256 bitmap = s_executionStates[sequenceNumber / 128];
    // to unset any potential existing state we zero the bits of the section the state occupies,
    // then we do an AND operation to blank out any existing state for the section.
    bitmap &= ~(MESSAGE_EXECUTION_STATE_MASK << offset);
    // Set the new state
    bitmap |= uint256(newState) << offset;

    s_executionStates[sequenceNumber / 128] = bitmap;
  }

  /// @inheritdoc IAny2EVMOffRamp
  function getSenderNonce(address sender) public view returns (uint64 nonce) {
    uint256 senderNonce = s_senderNonce[sender];

    if (senderNonce == 0 && i_prevOffRamp != address(0)) {
      // If OffRamp was upgraded, check if sender has a nonce from the previous OffRamp.
      return IAny2EVMOffRamp(i_prevOffRamp).getSenderNonce(sender);
    }
    return uint64(senderNonce);
  }

  /// @notice Manually execute a message.
  /// @param report Internal.ExecutionReport.
  function manuallyExecute(Internal.ExecutionReport memory report, uint256[] memory gasLimitOverrides) external {
    // We do this here because the other _execute path is already covered OCR2BaseXXX.
    if (i_chainID != block.chainid) revert OCR2BaseNoChecks.ForkedChain(i_chainID, uint64(block.chainid));

    uint256 numMsgs = report.messages.length;
    if (numMsgs != gasLimitOverrides.length) revert ManualExecutionGasLimitMismatch();
    for (uint256 i = 0; i < numMsgs; ++i) {
      uint256 newLimit = gasLimitOverrides[i];
      // Checks to ensure message cannot be executed with less gas than specified.
      if (newLimit != 0 && newLimit < report.messages[i].gasLimit) revert InvalidManualExecutionGasLimit(i, newLimit);
    }

    _execute(report, gasLimitOverrides);
  }

  /// @notice Entrypoint for execution, called by the OCR network
  /// @dev Expects an encoded ExecutionReport
  function _report(bytes calldata report) internal override {
    _execute(abi.decode(report, (Internal.ExecutionReport)), new uint256[](0));
  }

  /// @notice Executes a report, executing each message in order.
  /// @param report The execution report containing the messages and proofs.
  /// @param manualExecGasLimits An array of gas limits to use for manual execution.
  /// If called from the DON, this array is always empty.
  /// If called from manual execution, this array is always same length as messages.
  function _execute(Internal.ExecutionReport memory report, uint256[] memory manualExecGasLimits) internal whenHealthy {
    uint256 numMsgs = report.messages.length;
    if (numMsgs == 0) revert EmptyReport();
    if (numMsgs != report.offchainTokenData.length) revert UnexpectedTokenData();

    bytes32[] memory hashedLeaves = new bytes32[](numMsgs);

    for (uint256 i = 0; i < numMsgs; ++i) {
      Internal.EVM2EVMMessage memory message = report.messages[i];
      // We do this hash here instead of in _verifyMessages to avoid two separate loops
      // over the same data, which increases gas cost
      hashedLeaves[i] = Internal._hash(message, i_metadataHash);
      // For EVM2EVM offramps, the messageID is the leaf hash.
      // Asserting that this is true ensures we don't accidentally commit and then execute
      // a message with an unexpected hash.
      if (hashedLeaves[i] != message.messageId) revert InvalidMessageId();
    }

    // SECURITY CRITICAL CHECK
    uint256 timestampCommitted = ICommitStore(i_commitStore).verify(hashedLeaves, report.proofs, report.proofFlagBits);
    if (timestampCommitted == 0) revert RootNotCommitted();

    // Execute messages
    bool manualExecution = manualExecGasLimits.length != 0;
    for (uint256 i = 0; i < numMsgs; ++i) {
      Internal.EVM2EVMMessage memory message = report.messages[i];
      Internal.MessageExecutionState originalState = getExecutionState(message.sequenceNumber);
      // Two valid cases here, we either have never touched this message before, or we tried to execute
      // and failed. This check protects against reentry and re-execution because the other states are
      // IN_PROGRESS and SUCCESS, both should not be allowed to execute.
      if (
        !(originalState == Internal.MessageExecutionState.UNTOUCHED ||
          originalState == Internal.MessageExecutionState.FAILURE)
      ) revert AlreadyExecuted(message.sequenceNumber);

      if (manualExecution) {
        bool isOldCommitReport = (block.timestamp - timestampCommitted) >
          s_dynamicConfig.permissionLessExecutionThresholdSeconds;
        // Manually execution is fine if we previously failed or if the commit report is just too old
        // Acceptable state transitions: FAILURE->SUCCESS, UNTOUCHED->SUCCESS, FAILURE->FAILURE
        if (!(isOldCommitReport || originalState == Internal.MessageExecutionState.FAILURE))
          revert ManualExecutionNotYetEnabled();

        // Manual execution gas limit can override gas limit specified in the message. Value of 0 indicates no override.
        if (manualExecGasLimits[i] != 0) {
          message.gasLimit = manualExecGasLimits[i];
        }
      } else {
        // DON can only execute a message once
        // Acceptable state transitions: UNTOUCHED->SUCCESS, UNTOUCHED->FAILURE
        if (originalState != Internal.MessageExecutionState.UNTOUCHED) revert AlreadyAttempted(message.sequenceNumber);
      }

      // In the scenario where we upgrade offRamps, we still want to have sequential nonces.
      // Referencing the old offRamp to check the expected nonce if none is set for a
      // given sender allows us to skip the current message if it would not be the next according
      // to the old offRamp. This preserves sequencing between updates.
      uint64 prevNonce = s_senderNonce[message.sender];
      if (prevNonce == 0 && i_prevOffRamp != address(0)) {
        prevNonce = IAny2EVMOffRamp(i_prevOffRamp).getSenderNonce(message.sender);
        if (prevNonce + 1 != message.nonce) {
          // the starting v2 onramp nonce, i.e. the 1st message nonce v2 offramp is expected to receive,
          // is guaranteed to equal (largest v1 onramp nonce + 1).
          // if this message's nonce isn't (v1 offramp nonce + 1), then v1 offramp nonce != largest v1 onramp nonce,
          // it tells us there are still messages inflight for v1 offramp
          emit SkippedSenderWithPreviousRampMessageInflight(message.nonce, message.sender);
          continue;
        }
        // Otherwise this nonce is indeed the "transitional nonce", that is
        // all messages sent to v1 ramp have been executed by the DON and the sequence can resume in V2.
        // Note if first time user in V2, then prevNonce will be 0,
        // and message.nonce = 1, so this will be a no-op. If in strict mode and nonce isn't bumped due to failure,
        // then we'll call the old offramp again until it succeeds.
        s_senderNonce[message.sender] = prevNonce;
      }

      // UNTOUCHED messages MUST be executed in order always
      if (originalState == Internal.MessageExecutionState.UNTOUCHED) {
        if (prevNonce + 1 != message.nonce) {
          // We skip the message if the nonce is incorrect
          emit SkippedIncorrectNonce(message.nonce, message.sender);
          continue;
        }
      }

      bytes[] memory offchainTokenData = report.offchainTokenData[i];
      _isWellFormed(message, offchainTokenData.length);

      _setExecutionState(message.sequenceNumber, Internal.MessageExecutionState.IN_PROGRESS);
      (Internal.MessageExecutionState newState, bytes memory returnData) = _trialExecute(message, offchainTokenData);
      _setExecutionState(message.sequenceNumber, newState);

      // The only valid prior states are UNTOUCHED and FAILURE (checked above)
      // The only valid post states are FAILURE and SUCCESS (checked below)
      if (newState != Internal.MessageExecutionState.FAILURE && newState != Internal.MessageExecutionState.SUCCESS)
        revert InvalidNewState(message.sequenceNumber, newState);

      // Nonce changes per state transition strict
      // UNTOUCHED -> FAILURE  no nonce bump
      // UNTOUCHED -> SUCCESS: nonce bump
      // FAILURE   -> FAILURE: no nonce bump
      // FAILURE   -> SUCCESS: nonce bump
      if (message.strict) {
        if (newState == Internal.MessageExecutionState.SUCCESS) {
          s_senderNonce[message.sender]++;
        }
        // Nonce changes per state transition non-strict
        // UNTOUCHED -> FAILURE  nonce bump
        // UNTOUCHED -> SUCCESS  nonce bump
        // FAILURE   -> FAILURE  no nonce bump
        // FAILURE   -> SUCCESS  no nonce bump
      } else if (originalState == Internal.MessageExecutionState.UNTOUCHED) {
        s_senderNonce[message.sender]++;
      }

      emit ExecutionStateChanged(message.sequenceNumber, message.messageId, newState, returnData);
    }
  }

  /// @notice Does basic message validation. Should never fail.
  /// @param message The message to be validated.
  /// @dev reverts on validation failures.
  function _isWellFormed(Internal.EVM2EVMMessage memory message, uint256 offchainTokenDataLength) private view {
    if (message.sourceChainSelector != i_sourceChainSelector) revert InvalidSourceChain(message.sourceChainSelector);
    if (message.tokenAmounts.length > uint256(s_dynamicConfig.maxTokensLength))
      revert UnsupportedNumberOfTokens(message.sequenceNumber);
    if (message.tokenAmounts.length != offchainTokenDataLength) revert TokenDataMismatch(message.sequenceNumber);
    if (message.data.length > uint256(s_dynamicConfig.maxDataSize))
      revert MessageTooLarge(uint256(s_dynamicConfig.maxDataSize), message.data.length);
  }

  /// @notice Try executing a message.
  /// @param message Client.Any2EVMMessage memory message.
  /// @param offchainTokenData Data provided by the DON for token transfers.
  /// @return the new state of the message, being either SUCCESS or FAILURE.
  /// @return revert data in bytes if CCIP receiver reverted during execution.
  function _trialExecute(
    Internal.EVM2EVMMessage memory message,
    bytes[] memory offchainTokenData
  ) internal returns (Internal.MessageExecutionState, bytes memory) {
    try this.executeSingleMessage(message, offchainTokenData) {} catch (bytes memory err) {
      if (ReceiverError.selector == bytes4(err) || TokenHandlingError.selector == bytes4(err)) {
        // If CCIP receiver execution is not successful, bubble up receiver revert data,
        // prepended by the 4 bytes of ReceiverError.selector
        // Max length of revert data is Router.MAX_RET_BYTES, max length of err is 4 + Router.MAX_RET_BYTES
        return (Internal.MessageExecutionState.FAILURE, err);
      } else {
        // If revert is not caused by CCIP receiver, it is unexpected, bubble up the revert.
        revert ExecutionError(err);
      }
    }
    // If message execution succeeded, no CCIP receiver return data is expected, return with empty bytes.
    return (Internal.MessageExecutionState.SUCCESS, "");
  }

  /// @notice Execute a single message.
  /// @param message The message that will be executed.
  /// @param offchainTokenData Token transfer data to be passed to TokenPool.
  /// @dev this can only be called by the contract itself. It is part of
  /// the Execute call, as we can only try/catch on external calls.
  function executeSingleMessage(Internal.EVM2EVMMessage memory message, bytes[] memory offchainTokenData) external {
    if (msg.sender != address(this)) revert CanOnlySelfCall();
    Client.EVMTokenAmount[] memory destTokenAmounts = new Client.EVMTokenAmount[](0);
    if (message.tokenAmounts.length > 0) {
      destTokenAmounts = _releaseOrMintTokens(
        message.tokenAmounts,
        abi.encode(message.sender),
        message.receiver,
        offchainTokenData
      );
    }
    if (
      !message.receiver.isContract() || !message.receiver.supportsInterface(type(IAny2EVMMessageReceiver).interfaceId)
    ) return;

    (bool success, bytes memory returnData) = IRouter(s_dynamicConfig.router).routeMessage(
      Internal._toAny2EVMMessage(message, destTokenAmounts),
      GAS_FOR_CALL_EXACT_CHECK,
      message.gasLimit,
      message.receiver
    );
    // If CCIP receiver execution is not successful, revert the call including token transfers
    if (!success) revert ReceiverError(returnData);
  }

  /// @notice creates a unique hash to be used in message hashing.
  function _metadataHash(bytes32 prefix) internal view returns (bytes32) {
    return keccak256(abi.encode(prefix, i_sourceChainSelector, i_chainSelector, i_onRamp));
  }

  // ================================================================
  // |                           Config                             |
  // ================================================================

  /// @notice Returns the static config.
  /// @dev This function will always return the same struct as the contents is static and can never change.
  function getStaticConfig() external view returns (StaticConfig memory) {
    return
      StaticConfig({
        commitStore: i_commitStore,
        chainSelector: i_chainSelector,
        sourceChainSelector: i_sourceChainSelector,
        onRamp: i_onRamp,
        prevOffRamp: i_prevOffRamp,
        armProxy: i_armProxy
      });
  }

  /// @notice Returns the current dynamic config.
  /// @return The current config.
  function getDynamicConfig() external view returns (DynamicConfig memory) {
    return s_dynamicConfig;
  }

  /// @notice Sets the dynamic config. This function is called during `setOCR2Config` flow
  function _beforeSetConfig(bytes memory onchainConfig) internal override {
    DynamicConfig memory dynamicConfig = abi.decode(onchainConfig, (DynamicConfig));

    if (dynamicConfig.router == address(0)) revert ZeroAddressNotAllowed();

    s_dynamicConfig = dynamicConfig;

    emit ConfigSet(
      StaticConfig({
        commitStore: i_commitStore,
        chainSelector: i_chainSelector,
        sourceChainSelector: i_sourceChainSelector,
        onRamp: i_onRamp,
        prevOffRamp: i_prevOffRamp,
        armProxy: i_armProxy
      }),
      dynamicConfig
    );
  }

  // ================================================================
  // |                      Tokens and pools                        |
  // ================================================================

  /// @notice Get all supported source tokens
  /// @return sourceTokens of supported source tokens
  function getSupportedTokens() external view returns (IERC20[] memory sourceTokens) {
    sourceTokens = new IERC20[](s_poolsBySourceToken.length());
    for (uint256 i = 0; i < sourceTokens.length; ++i) {
      (address token, ) = s_poolsBySourceToken.at(i);
      sourceTokens[i] = IERC20(token);
    }
  }

  /// @notice Get a token pool by its source token
  /// @param sourceToken token
  /// @return Token Pool
  function getPoolBySourceToken(IERC20 sourceToken) public view returns (IPool) {
    (bool success, address pool) = s_poolsBySourceToken.tryGet(address(sourceToken));
    if (!success) revert UnsupportedToken(sourceToken);
    return IPool(pool);
  }

  /// @notice Get the destination token from the pool based on a given source token.
  /// @param sourceToken The source token
  /// @return the destination token
  function getDestinationToken(IERC20 sourceToken) external view returns (IERC20) {
    (bool success, address pool) = s_poolsBySourceToken.tryGet(address(sourceToken));
    if (!success) revert UnsupportedToken(sourceToken);
    return IPool(pool).getToken();
  }

  /// @notice Get a token pool by its dest token
  /// @param destToken token
  /// @return Token Pool
  function getPoolByDestToken(IERC20 destToken) external view returns (IPool) {
    (bool success, address pool) = s_poolsByDestToken.tryGet(address(destToken));
    if (!success) revert UnsupportedToken(destToken);
    return IPool(pool);
  }

  /// @notice Get all configured destination tokens
  /// @return destTokens Array of configured destination tokens
  function getDestinationTokens() external view returns (IERC20[] memory destTokens) {
    destTokens = new IERC20[](s_poolsByDestToken.length());
    for (uint256 i = 0; i < destTokens.length; ++i) {
      (address token, ) = s_poolsByDestToken.at(i);
      destTokens[i] = IERC20(token);
    }
  }

  /// @notice Adds and removed token pools.
  /// @param removes The tokens and pools to be removed
  /// @param adds The tokens and pools to be added.
  function applyPoolUpdates(
    Internal.PoolUpdate[] calldata removes,
    Internal.PoolUpdate[] calldata adds
  ) external onlyOwner {
    for (uint256 i = 0; i < removes.length; ++i) {
      address token = removes[i].token;
      address pool = removes[i].pool;

      // Check if the pool exists
      if (!s_poolsBySourceToken.contains(token)) revert PoolDoesNotExist();
      // Sanity check
      if (s_poolsBySourceToken.get(token) != pool) revert TokenPoolMismatch();

      s_poolsBySourceToken.remove(token);
      s_poolsByDestToken.remove(address(IPool(pool).getToken()));

      emit PoolRemoved(token, pool);
    }

    for (uint256 i = 0; i < adds.length; ++i) {
      address token = adds[i].token;
      address pool = adds[i].pool;

      if (token == address(0) || pool == address(0)) revert InvalidTokenPoolConfig();
      // Check if the pool is already set
      if (s_poolsBySourceToken.contains(token)) revert PoolAlreadyAdded();

      // Set the s_pools with new config values
      s_poolsBySourceToken.set(token, pool);
      s_poolsByDestToken.set(address(IPool(pool).getToken()), pool);

      emit PoolAdded(token, pool);
    }
  }

  /// @notice Uses pools to release or mint a number of different tokens to a receiver address.
  /// @param sourceTokenAmounts List of tokens and amount values to be released/minted.
  /// @param receiver The address that will receive the tokens.
  /// @dev This function wrappes the token pool call in a try catch block to gracefully handle
  /// any non-rate limiting errors that may occur. If we encounter a rate limiting related error
  /// we bubble it up. If we encounter a non-rate limiting error we wrap it in a TokenHandlingError.
  function _releaseOrMintTokens(
    Client.EVMTokenAmount[] memory sourceTokenAmounts,
    bytes memory originalSender,
    address receiver,
    bytes[] memory offchainTokenData
  ) internal returns (Client.EVMTokenAmount[] memory) {
    Client.EVMTokenAmount[] memory destTokenAmounts = new Client.EVMTokenAmount[](sourceTokenAmounts.length);
    for (uint256 i = 0; i < sourceTokenAmounts.length; ++i) {
      IPool pool = getPoolBySourceToken(IERC20(sourceTokenAmounts[i].token));

      try
        pool.releaseOrMint(
          originalSender,
          receiver,
          sourceTokenAmounts[i].amount,
          i_sourceChainSelector,
          offchainTokenData[i]
        )
      {} catch (
        /// @dev we only want to revert on rate limiting errors, any other errors are
        /// wrapped in a TokenHandlingError, which is caught above and handled gracefully.
        bytes memory err
      ) {
        bytes4 errSig = bytes4(err);
        if (
          RateLimiter.BucketOverfilled.selector == errSig ||
          RateLimiter.AggregateValueMaxCapacityExceeded.selector == errSig ||
          RateLimiter.AggregateValueRateLimitReached.selector == errSig ||
          RateLimiter.TokenMaxCapacityExceeded.selector == errSig ||
          RateLimiter.TokenRateLimitReached.selector == errSig
        ) {
          revert TokenRateLimitError(err);
        } else {
          revert TokenHandlingError(err);
        }
      }

      destTokenAmounts[i].token = address(pool.getToken());
      destTokenAmounts[i].amount = sourceTokenAmounts[i].amount;
    }
    _rateLimitValue(destTokenAmounts, IPriceRegistry(s_dynamicConfig.priceRegistry));
    return destTokenAmounts;
  }

  // ================================================================
  // |                        Access and ARM                        |
  // ================================================================

  /// @notice Reverts as this contract should not access CCIP messages
  function ccipReceive(Client.Any2EVMMessage calldata) external pure {
    // solhint-disable-next-line reason-string
    revert();
  }

  /// @notice Ensure that the ARM has not emitted a bad signal, and that the latest heartbeat is not stale.
  modifier whenHealthy() {
    if (IARM(i_armProxy).isCursed()) revert BadARMSignal();
    _;
  }
}

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

abstract contract TypeAndVersionInterface {
  function typeAndVersion() external pure virtual returns (string memory);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

interface ICommitStore {
  /// @notice Returns timestamp of when root was accepted or 0 if verification fails.
  /// @dev This method uses a merkle tree within a merkle tree, with the hashedLeaves,
  /// proofs and proofFlagBits being used to get the root of the inner tree.
  /// This root is then used as the singular leaf of the outer tree.
  function verify(
    bytes32[] calldata hashedLeaves,
    bytes32[] calldata proofs,
    uint256 proofFlagBits
  ) external view returns (uint256 timestamp);

  /// @notice Returns the expected next sequence number
  function getExpectedNextSequenceNumber() external view returns (uint64 sequenceNumber);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

/// @notice This interface contains the only ARM-related functions that might be used on-chain by other CCIP contracts.
interface IARM {
  /// @notice A Merkle root tagged with the address of the commit store contract it is destined for.
  struct TaggedRoot {
    address commitStore;
    bytes32 root;
  }

  /// @notice Callers MUST NOT cache the return value as a blessed tagged root could become unblessed.
  function isBlessed(TaggedRoot calldata taggedRoot) external view returns (bool);

  /// @notice When the ARM is "cursed", CCIP pauses until the curse is lifted.
  function isCursed() external view returns (bool);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

import {IERC20} from "../../../vendor/openzeppelin-solidity/v4.8.0/token/ERC20/IERC20.sol";

// Shared public interface for multiple pool types.
// Each pool type handles a different child token model (lock/unlock, mint/burn.)
interface IPool {
  /// @notice Lock tokens into the pool or burn the tokens.
  /// @param originalSender Original sender of the tokens.
  /// @param receiver Receiver of the tokens on destination chain.
  /// @param amount Amount to lock or burn.
  /// @param destChainSelector Destination chain Id.
  /// @param extraArgs Additional data passed in by sender for lockOrBurn processing
  /// in custom pools on source chain.
  /// @return retData Optional field that contains bytes. Unused for now but already
  /// implemented to allow future upgrades while preserving the interface.
  function lockOrBurn(
    address originalSender,
    bytes calldata receiver,
    uint256 amount,
    uint64 destChainSelector,
    bytes calldata extraArgs
  ) external returns (bytes memory);

  /// @notice Releases or mints tokens to the receiver address.
  /// @param originalSender Original sender of the tokens.
  /// @param receiver Receiver of the tokens.
  /// @param amount Amount to release or mint.
  /// @param sourceChainSelector Source chain Id.
  /// @param extraData Additional data supplied offchain for releaseOrMint processing in
  /// custom pools on dest chain. This could be an attestation that was retrieved through a
  /// third party API.
  /// @dev offchainData can come from any untrusted source.
  function releaseOrMint(
    bytes memory originalSender,
    address receiver,
    uint256 amount,
    uint64 sourceChainSelector,
    bytes memory extraData
  ) external;

  /// @notice Gets the IERC20 token that this pool can lock or burn.
  /// @return token The IERC20 token representation.
  function getToken() external view returns (IERC20 token);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

import {Client} from "../libraries/Client.sol";

interface IRouter {
  error OnlyOffRamp();

  /// @notice Route the message to its intended receiver contract.
  /// @param message Client.Any2EVMMessage struct.
  /// @param gasForCallExactCheck of params for exec
  /// @param gasLimit set of params for exec
  /// @param receiver set of params for exec
  /// @dev if the receiver is a contracts that signals support for CCIP execution through EIP-165.
  /// the contract is called. If not, only tokens are transferred.
  /// @return success A boolean value indicating whether the ccip message was received without errors.
  /// @return retBytes A bytes array containing return data form CCIP receiver.
  function routeMessage(
    Client.Any2EVMMessage calldata message,
    uint16 gasForCallExactCheck,
    uint256 gasLimit,
    address receiver
  ) external returns (bool success, bytes memory retBytes);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

import {Internal} from "../libraries/Internal.sol";

interface IPriceRegistry {
  /// @notice Update the price for given tokens and destination chain.
  /// @param priceUpdates The price updates to apply.
  function updatePrices(Internal.PriceUpdates memory priceUpdates) external;

  /// @notice Get the `tokenPrice` for a given token.
  /// @param token The token to get the price for.
  /// @return tokenPrice The tokenPrice for the given token.
  function getTokenPrice(address token) external view returns (Internal.TimestampedUint192Value memory);

  /// @notice Get the `tokenPrice` for a given token, checks if the price is valid.
  /// @param token The token to get the price for.
  /// @return tokenPrice The tokenPrice for the given token if it exists and is valid.
  function getValidatedTokenPrice(address token) external view returns (uint192);

  /// @notice Get the `tokenPrice` for an array of tokens.
  /// @param tokens The tokens to get prices for.
  /// @return tokenPrices The tokenPrices for the given tokens.
  function getTokenPrices(address[] calldata tokens) external view returns (Internal.TimestampedUint192Value[] memory);

  /// @notice Get the `gasPrice` for a given destination chain ID.
  /// @param destChainSelector The destination chain to get the price for.
  /// @return gasPrice The gasPrice for the given destination chain ID.
  function getDestinationChainGasPrice(
    uint64 destChainSelector
  ) external view returns (Internal.TimestampedUint192Value memory);

  /// @notice Gets the fee token price and the gas price, both denominated in dollars.
  /// @param token The source token to get the price for.
  /// @param destChainSelector The destination chain to get the gas price for.
  /// @return tokenPrice The price of the feeToken in 1e18 dollars per base unit.
  /// @return gasPrice The price of gas in 1e18 dollars per base unit.
  function getTokenAndGasPrices(
    address token,
    uint64 destChainSelector
  ) external view returns (uint192 tokenPrice, uint192 gasPrice);

  /// @notice Convert a given token amount to target token amount.
  /// @param fromToken The given token address.
  /// @param fromTokenAmount The given token amount.
  /// @param toToken The target token address.
  /// @return toTokenAmount The target token amount.
  function convertTokenAmount(
    address fromToken,
    uint256 fromTokenAmount,
    address toToken
  ) external view returns (uint256 toTokenAmount);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

import {Client} from "../libraries/Client.sol";

/// @notice Application contracts that intend to receive messages from
/// the router should implement this interface.
interface IAny2EVMMessageReceiver {
  /// @notice Called by the Router to deliver a message.
  /// If this reverts, any token transfers also revert. The message
  /// will move to a FAILED state and become available for manual execution.
  /// @param message CCIP Message
  /// @dev Note ensure you check the msg.sender is the OffRampRouter
  function ccipReceive(Client.Any2EVMMessage calldata message) external;
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

interface IAny2EVMOffRamp {
  /// @notice Returns the the current nonce for a receiver.
  /// @param sender The sender address
  /// @return nonce The nonce value belonging to the sender address.
  function getSenderNonce(address sender) external view returns (uint64 nonce);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

// End consumer library.
library Client {
  struct EVMTokenAmount {
    address token; // token address on the local chain.
    uint256 amount; // Amount of tokens.
  }

  struct Any2EVMMessage {
    bytes32 messageId; // MessageId corresponding to ccipSend on source.
    uint64 sourceChainSelector; // Source chain selector.
    bytes sender; // abi.decode(sender) if coming from an EVM chain.
    bytes data; // payload sent in original message.
    EVMTokenAmount[] destTokenAmounts; // Tokens and their amounts in their destination chain representation.
  }

  // If extraArgs is empty bytes, the default is 200k gas limit and strict = false.
  struct EVM2AnyMessage {
    bytes receiver; // abi.encode(receiver address) for dest EVM chains
    bytes data; // Data payload
    EVMTokenAmount[] tokenAmounts; // Token transfers
    address feeToken; // Address of feeToken. address(0) means you will send msg.value.
    bytes extraArgs; // Populate this with _argsToBytes(EVMExtraArgsV1)
  }

  // extraArgs will evolve to support new features
  // bytes4(keccak256("CCIP EVMExtraArgsV1"));
  bytes4 public constant EVM_EXTRA_ARGS_V1_TAG = 0x97a657c9;
  struct EVMExtraArgsV1 {
    uint256 gasLimit; // ATTENTION!!! MAX GAS LIMIT 4M FOR BETA TESTING
    bool strict; // See strict sequencing details below.
  }

  function _argsToBytes(EVMExtraArgsV1 memory extraArgs) internal pure returns (bytes memory bts) {
    return abi.encodeWithSelector(EVM_EXTRA_ARGS_V1_TAG, extraArgs);
  }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

import {Client} from "./Client.sol";
import {MerkleMultiProof} from "../libraries/MerkleMultiProof.sol";

// Library for CCIP internal definitions common to multiple contracts.
library Internal {
  struct PriceUpdates {
    TokenPriceUpdate[] tokenPriceUpdates;
    uint64 destChainSelector; // --┐ Destination chain selector
    uint192 usdPerUnitGas; // -----┘ 1e18 USD per smallest unit (e.g. wei) of destination chain gas
  }

  struct TokenPriceUpdate {
    address sourceToken; // Source token
    uint192 usdPerToken; // 1e18 USD per smallest unit of token
  }

  struct TimestampedUint192Value {
    uint192 value; // -------┐ The price, in 1e18 USD.
    uint64 timestamp; // ----┘ Timestamp of the most recent price update.
  }

  struct PoolUpdate {
    address token; // The IERC20 token address
    address pool; // The token pool address
  }

  struct ExecutionReport {
    EVM2EVMMessage[] messages;
    // Contains a bytes array for each message
    // each inner bytes array contains bytes per transferred token
    bytes[][] offchainTokenData;
    bytes32[] proofs;
    uint256 proofFlagBits;
  }

  // @notice The cross chain message that gets committed to EVM chains
  struct EVM2EVMMessage {
    uint64 sourceChainSelector;
    uint64 sequenceNumber;
    uint256 feeTokenAmount;
    address sender;
    uint64 nonce;
    uint256 gasLimit;
    bool strict;
    // User fields
    address receiver;
    bytes data;
    Client.EVMTokenAmount[] tokenAmounts;
    address feeToken;
    bytes32 messageId;
  }

  function _toAny2EVMMessage(
    EVM2EVMMessage memory original,
    Client.EVMTokenAmount[] memory destTokenAmounts
  ) internal pure returns (Client.Any2EVMMessage memory message) {
    message = Client.Any2EVMMessage({
      messageId: original.messageId,
      sourceChainSelector: original.sourceChainSelector,
      sender: abi.encode(original.sender),
      data: original.data,
      destTokenAmounts: destTokenAmounts
    });
  }

  bytes32 internal constant EVM_2_EVM_MESSAGE_HASH = keccak256("EVM2EVMMessageEvent");

  function _hash(EVM2EVMMessage memory original, bytes32 metadataHash) internal pure returns (bytes32) {
    return
      keccak256(
        abi.encode(
          MerkleMultiProof.LEAF_DOMAIN_SEPARATOR,
          metadataHash,
          original.sequenceNumber,
          original.nonce,
          original.sender,
          original.receiver,
          keccak256(original.data),
          keccak256(abi.encode(original.tokenAmounts)),
          original.gasLimit,
          original.strict,
          original.feeToken,
          original.feeTokenAmount
        )
      );
  }

  /// @notice Enum listing the possible message execution states within
  /// the offRamp contract.
  /// UNTOUCHED never executed
  /// IN_PROGRESS currently being executed, used a replay protection
  /// SUCCESS successfully executed. End state
  /// FAILURE unsuccessfully executed, manual execution is now enabled.
  enum MessageExecutionState {
    UNTOUCHED,
    IN_PROGRESS,
    SUCCESS,
    FAILURE
  }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

/// @notice Implements Token Bucket rate limiting.
/// @dev uint128 is safe for rate limiter state.
/// For USD value rate limiting, it can adequately store USD value in 18 decimals.
/// For ERC20 token amount rate limiting, all tokens that will be listed will have at most
/// a supply of uint128.max tokens, and it will therefore not overflow the bucket.
/// In exceptional scenarios where tokens consumed may be larger than uint128,
/// e.g. compromised issuer, an enabled RateLimiter will check and revert.
library RateLimiter {
  error BucketOverfilled();
  error OnlyCallableByAdminOrOwner();
  error TokenMaxCapacityExceeded(uint256 capacity, uint256 requested, address tokenAddress);
  error TokenRateLimitReached(uint256 minWaitInSeconds, uint256 available, address tokenAddress);
  error AggregateValueMaxCapacityExceeded(uint256 capacity, uint256 requested);
  error AggregateValueRateLimitReached(uint256 minWaitInSeconds, uint256 available);

  event TokensConsumed(uint256 tokens);
  event ConfigChanged(Config config);

  struct TokenBucket {
    uint128 tokens; // ------┐ Current number of tokens that are in the bucket.
    uint32 lastUpdated; //   | Timestamp in seconds of the last token refill, good for 100+ years.
    bool isEnabled; // ------┘ Indication whether the rate limiting is enabled or not
    uint128 capacity; // ----┐ Maximum number of tokens that can be in the bucket.
    uint128 rate; // --------┘ Number of tokens per second that the bucket is refilled.
  }

  struct Config {
    bool isEnabled; // Indication whether the rate limiting should be enabled
    uint128 capacity; // ----┐ Specifies the capacity of the rate limiter
    uint128 rate; //  -------┘ Specifies the rate of the rate limiter
  }

  /// @notice _consume removes the given tokens from the pool, lowering the
  /// rate tokens allowed to be consumed for subsequent calls.
  /// @param requestTokens The total tokens to be consumed from the bucket.
  /// @param tokenAddress The token to consume capacity for, use 0x0 to indicate aggregate value capacity.
  /// @dev Reverts when requestTokens exceeds bucket capacity or available tokens in the bucket
  /// @dev emits removal of requestTokens if requestTokens is > 0
  function _consume(TokenBucket storage s_bucket, uint256 requestTokens, address tokenAddress) internal {
    // If there is no value to remove or rate limiting is turned off, skip this step to reduce gas usage
    if (!s_bucket.isEnabled || requestTokens == 0) {
      return;
    }

    uint256 tokens = s_bucket.tokens;
    uint256 capacity = s_bucket.capacity;
    uint256 timeDiff = block.timestamp - s_bucket.lastUpdated;

    if (timeDiff != 0) {
      if (tokens > capacity) revert BucketOverfilled();

      // Refill tokens when arriving at a new block time
      tokens = _calculateRefill(capacity, tokens, timeDiff, s_bucket.rate);

      s_bucket.lastUpdated = uint32(block.timestamp);
    }

    if (capacity < requestTokens) {
      // Token address 0 indicates consuming aggregate value rate limit capacity.
      if (tokenAddress == address(0)) revert AggregateValueMaxCapacityExceeded(capacity, requestTokens);
      revert TokenMaxCapacityExceeded(capacity, requestTokens, tokenAddress);
    }
    if (tokens < requestTokens) {
      uint256 rate = s_bucket.rate;
      // Wait required until the bucket is refilled enough to accept this value, round up to next higher second
      // Consume is not guaranteed to succeed after wait time passes if there is competing traffic.
      // This acts as a lower bound of wait time.
      uint256 minWaitInSeconds = ((requestTokens - tokens) + (rate - 1)) / rate;

      if (tokenAddress == address(0)) revert AggregateValueRateLimitReached(minWaitInSeconds, tokens);
      revert TokenRateLimitReached(minWaitInSeconds, tokens, tokenAddress);
    }
    tokens -= requestTokens;

    // Downcast is safe here, as tokens is not larger than capacity
    s_bucket.tokens = uint128(tokens);
    emit TokensConsumed(requestTokens);
  }

  /// @notice Gets the token bucket with its values for the block it was requested at.
  /// @return The token bucket.
  function _currentTokenBucketState(TokenBucket memory bucket) internal view returns (TokenBucket memory) {
    // We update the bucket to reflect the status at the exact time of the
    // call. This means we might need to refill a part of the bucket based
    // on the time that has passed since the last update.
    bucket.tokens = uint128(
      _calculateRefill(bucket.capacity, bucket.tokens, block.timestamp - bucket.lastUpdated, bucket.rate)
    );
    bucket.lastUpdated = uint32(block.timestamp);
    return bucket;
  }

  /// @notice Sets the rate limited config.
  /// @param s_bucket The token bucket
  /// @param config The new config
  function _setTokenBucketConfig(TokenBucket storage s_bucket, Config memory config) internal {
    // First update the bucket to make sure the proper rate is used for all the time
    // up until the config change.
    uint256 timeDiff = block.timestamp - s_bucket.lastUpdated;
    if (timeDiff != 0) {
      s_bucket.tokens = uint128(_calculateRefill(s_bucket.capacity, s_bucket.tokens, timeDiff, s_bucket.rate));

      s_bucket.lastUpdated = uint32(block.timestamp);
    }

    s_bucket.tokens = uint128(_min(config.capacity, s_bucket.tokens));
    s_bucket.isEnabled = config.isEnabled;
    s_bucket.capacity = config.capacity;
    s_bucket.rate = config.rate;

    emit ConfigChanged(config);
  }

  /// @notice Calculate refilled tokens
  /// @param capacity bucket capacity
  /// @param tokens current bucket tokens
  /// @param timeDiff block time difference since last refill
  /// @param rate bucket refill rate
  /// @return the value of tokens after refill
  function _calculateRefill(
    uint256 capacity,
    uint256 tokens,
    uint256 timeDiff,
    uint256 rate
  ) private pure returns (uint256) {
    return _min(capacity, tokens + timeDiff * rate);
  }

  /// @notice Return the smallest of two integers
  /// @param a first int
  /// @param b second int
  /// @return smallest
  function _min(uint256 a, uint256 b) internal pure returns (uint256) {
    return a < b ? a : b;
  }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

import {OwnerIsCreator} from "../../shared/access/OwnerIsCreator.sol";
import {OCR2Abstract} from "./OCR2Abstract.sol";

/// @notice Onchain verification of reports from the offchain reporting protocol
/// @dev For details on its operation, see the offchain reporting protocol design
/// doc, which refers to this contract as simply the "contract".
/// @dev This contract does ***NOT*** check the supplied signatures on `transmit`
/// This is intentional.
abstract contract OCR2BaseNoChecks is OwnerIsCreator, OCR2Abstract {
  error InvalidConfig(string message);
  error WrongMessageLength(uint256 expected, uint256 actual);
  error ConfigDigestMismatch(bytes32 expected, bytes32 actual);
  error ForkedChain(uint256 expected, uint256 actual);
  error UnauthorizedTransmitter();
  error OracleCannotBeZeroAddress();

  // Packing these fields used on the hot path in a ConfigInfo variable reduces the
  // retrieval of all of them to a minimum number of SLOADs.
  struct ConfigInfo {
    bytes32 latestConfigDigest;
    uint8 f;
    uint8 n;
  }

  // Used for s_oracles[a].role, where a is an address, to track the purpose
  // of the address, or to indicate that the address is unset.
  enum Role {
    // No oracle role has been set for address a
    Unset,
    // Unused
    Signer,
    // Transmission address for the s_oracles[a].index'th oracle. I.e., if a
    // report is received by OCR2Aggregator.transmit in which msg.sender is
    // a, it is attributed to the s_oracles[a].index'th oracle.
    Transmitter
  }

  struct Oracle {
    uint8 index; // Index of oracle in s_transmitters
    Role role; // Role of the address which mapped to this struct
  }

  // The current config
  ConfigInfo internal s_configInfo;

  // incremented each time a new config is posted. This count is incorporated
  // into the config digest, to prevent replay attacks.
  uint32 internal s_configCount;
  // makes it easier for offchain systems to extract config from logs.
  uint32 internal s_latestConfigBlockNumber;

  // Transmitter address
  mapping(address transmitter => Oracle oracle) internal s_oracles;

  // s_transmitters contains the transmission address of each oracle,
  // i.e. the address the oracle actually sends transactions to the contract from
  address[] internal s_transmitters;

  // The constant-length components of the msg.data sent to transmit.
  // See the "If we wanted to call sam" example on for example reasoning
  // https://solidity.readthedocs.io/en/v0.7.2/abi-spec.html
  uint16 private constant TRANSMIT_MSGDATA_CONSTANT_LENGTH_COMPONENT =
    4 + // function selector
      32 *
      3 + // 3 words containing reportContext
      32 + // word containing start location of abiencoded report value
      32 + // word containing location start of abiencoded rs value
      32 + // word containing start location of abiencoded ss value
      32 + // rawVs value
      32 + // word containing length of report
      32 + // word containing length rs
      32; // word containing length of ss

  uint256 internal immutable i_chainID;

  // Reverts transaction if config args are invalid
  modifier checkConfigValid(uint256 numTransmitters, uint256 f) {
    if (numTransmitters > MAX_NUM_ORACLES) revert InvalidConfig("too many transmitters");
    if (f == 0) revert InvalidConfig("f must be positive");
    _;
  }

  constructor() {
    i_chainID = block.chainid;
  }

  /// @notice sets offchain reporting protocol configuration incl. participating oracles
  /// @param signers addresses with which oracles sign the reports
  /// @param transmitters addresses oracles use to transmit the reports
  /// @param f number of faulty oracles the system can tolerate
  /// @param onchainConfig encoded on-chain contract configuration
  /// @param offchainConfigVersion version number for offchainEncoding schema
  /// @param offchainConfig encoded off-chain oracle configuration
  function setOCR2Config(
    address[] memory signers,
    address[] memory transmitters,
    uint8 f,
    bytes memory onchainConfig,
    uint64 offchainConfigVersion,
    bytes memory offchainConfig
  ) external override checkConfigValid(transmitters.length, f) onlyOwner {
    _beforeSetConfig(onchainConfig);
    uint256 oldTransmitterLength = s_transmitters.length;
    for (uint256 i = 0; i < oldTransmitterLength; ++i) {
      delete s_oracles[s_transmitters[i]];
    }

    uint256 newTransmitterLength = transmitters.length;
    for (uint256 i = 0; i < newTransmitterLength; ++i) {
      address transmitter = transmitters[i];
      if (s_oracles[transmitter].role != Role.Unset) revert InvalidConfig("repeated transmitter address");
      if (transmitter == address(0)) revert OracleCannotBeZeroAddress();
      s_oracles[transmitter] = Oracle(uint8(i), Role.Transmitter);
    }

    s_transmitters = transmitters;

    s_configInfo.f = f;
    s_configInfo.n = uint8(newTransmitterLength);
    s_configInfo.latestConfigDigest = _configDigestFromConfigData(
      block.chainid,
      address(this),
      ++s_configCount,
      signers,
      transmitters,
      f,
      onchainConfig,
      offchainConfigVersion,
      offchainConfig
    );

    uint32 previousConfigBlockNumber = s_latestConfigBlockNumber;
    s_latestConfigBlockNumber = uint32(block.number);

    emit ConfigSet(
      previousConfigBlockNumber,
      s_configInfo.latestConfigDigest,
      s_configCount,
      signers,
      transmitters,
      f,
      onchainConfig,
      offchainConfigVersion,
      offchainConfig
    );
  }

  /// @dev Hook that is run from setOCR2Config() right after validating configuration.
  /// Empty by default, please provide an implementation in a child contract if you need additional configuration processing
  function _beforeSetConfig(bytes memory _onchainConfig) internal virtual {}

  /// @return list of addresses permitted to transmit reports to this contract
  /// @dev The list will match the order used to specify the transmitter during setConfig
  function getTransmitters() external view returns (address[] memory) {
    return s_transmitters;
  }

  /// @notice transmit is called to post a new report to the contract
  /// @param report serialized report, which the signatures are signing.
  /// @param rs ith element is the R components of the ith signature on report. Must have at most MAX_NUM_ORACLES entries
  /// @param ss ith element is the S components of the ith signature on report. Must have at most MAX_NUM_ORACLES entries
  function transmit(
    // NOTE: If these parameters are changed, expectedMsgDataLength and/or
    // TRANSMIT_MSGDATA_CONSTANT_LENGTH_COMPONENT need to be changed accordingly
    bytes32[3] calldata reportContext,
    bytes calldata report,
    bytes32[] calldata rs,
    bytes32[] calldata ss,
    bytes32 // signatures
  ) external override {
    _report(report);

    // reportContext consists of:
    // reportContext[0]: ConfigDigest
    // reportContext[1]: 27 byte padding, 4-byte epoch and 1-byte round
    // reportContext[2]: ExtraHash
    bytes32 configDigest = reportContext[0];
    bytes32 latestConfigDigest = s_configInfo.latestConfigDigest;
    if (latestConfigDigest != configDigest) revert ConfigDigestMismatch(latestConfigDigest, configDigest);
    // If the cached chainID at time of deployment doesn't match the current chainID, we reject all signed reports.
    // This avoids a (rare) scenario where chain A forks into chain A and A', A' still has configDigest
    // calculated from chain A and so OCR reports will be valid on both forks.
    if (i_chainID != block.chainid) revert ForkedChain(i_chainID, block.chainid);

    emit Transmitted(configDigest, uint32(uint256(reportContext[1]) >> 8));

    // Scoping this reduces stack pressure and gas usage
    {
      Oracle memory transmitter = s_oracles[msg.sender];
      // Check that sender is authorized to report
      if (!(transmitter.role == Role.Transmitter && msg.sender == s_transmitters[transmitter.index]))
        revert UnauthorizedTransmitter();
    }

    uint256 expectedDataLength = uint256(TRANSMIT_MSGDATA_CONSTANT_LENGTH_COMPONENT) +
      report.length + // one byte pure entry in _report
      rs.length *
      32 + // 32 bytes per entry in _rs
      ss.length *
      32; // 32 bytes per entry in _ss)
    if (msg.data.length != expectedDataLength) revert WrongMessageLength(expectedDataLength, msg.data.length);
  }

  /// @notice information about current offchain reporting protocol configuration
  /// @return configCount ordinal number of current config, out of all configs applied to this contract so far
  /// @return blockNumber block at which this config was set
  /// @return configDigest domain-separation tag for current config (see _configDigestFromConfigData)
  function latestConfigDetails()
    external
    view
    override
    returns (uint32 configCount, uint32 blockNumber, bytes32 configDigest)
  {
    return (s_configCount, s_latestConfigBlockNumber, s_configInfo.latestConfigDigest);
  }

  /// @inheritdoc OCR2Abstract
  function latestConfigDigestAndEpoch()
    external
    view
    virtual
    override
    returns (bool scanLogs, bytes32 configDigest, uint32 epoch)
  {
    return (true, bytes32(0), uint32(0));
  }

  function _report(bytes calldata report) internal virtual;
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.19;

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

import {OwnerIsCreator} from "./../shared/access/OwnerIsCreator.sol";
import {Client} from "./libraries/Client.sol";
import {RateLimiter} from "./libraries/RateLimiter.sol";
import {USDPriceWith18Decimals} from "./libraries/USDPriceWith18Decimals.sol";

contract AggregateRateLimiter is OwnerIsCreator {
  using RateLimiter for RateLimiter.TokenBucket;
  using USDPriceWith18Decimals for uint192;

  error PriceNotFoundForToken(address token);
  event AdminSet(address newAdmin);

  // The address of the token limit admin that has the same permissions as the owner.
  address internal s_admin;

  // The token bucket object that contains the bucket state.
  RateLimiter.TokenBucket private s_rateLimiter;

  /// @param config The RateLimiter.Config containing the capacity and refill rate
  /// of the bucket, plus the admin address.
  constructor(RateLimiter.Config memory config) {
    s_rateLimiter = RateLimiter.TokenBucket({
      rate: config.rate,
      capacity: config.capacity,
      tokens: config.capacity,
      lastUpdated: uint32(block.timestamp),
      isEnabled: config.isEnabled
    });
  }

  /// @notice Consumes value from the rate limiter bucket based on the
  /// token value given. First, calculate the prices
  function _rateLimitValue(Client.EVMTokenAmount[] memory tokenAmounts, IPriceRegistry priceRegistry) internal {
    uint256 numberOfTokens = tokenAmounts.length;

    uint256 value = 0;
    for (uint256 i = 0; i < numberOfTokens; ++i) {
      // not fetching validated price, as price staleness is not important for value-based rate limiting
      // we only need to verify price is not 0
      uint192 pricePerToken = priceRegistry.getTokenPrice(tokenAmounts[i].token).value;
      if (pricePerToken == 0) revert PriceNotFoundForToken(tokenAmounts[i].token);
      value += pricePerToken._calcUSDValueFromTokenAmount(tokenAmounts[i].amount);
    }

    s_rateLimiter._consume(value, address(0));
  }

  /// @notice Gets the token bucket with its values for the block it was requested at.
  /// @return The token bucket.
  function currentRateLimiterState() external view returns (RateLimiter.TokenBucket memory) {
    return s_rateLimiter._currentTokenBucketState();
  }

  /// @notice Sets the rate limited config.
  /// @param config The new rate limiter config.
  /// @dev should only be callable by the owner or token limit admin.
  function setRateLimiterConfig(RateLimiter.Config memory config) external onlyAdminOrOwner {
    s_rateLimiter._setTokenBucketConfig(config);
  }

  // ================================================================
  // |                           Access                             |
  // ================================================================

  /// @notice Gets the token limit admin address.
  /// @return the token limit admin address.
  function getTokenLimitAdmin() external view returns (address) {
    return s_admin;
  }

  /// @notice Sets the token limit admin address.
  /// @param newAdmin the address of the new admin.
  /// @dev setting this to address(0) indicates there is no active admin.
  function setAdmin(address newAdmin) external onlyAdminOrOwner {
    s_admin = newAdmin;
    emit AdminSet(newAdmin);
  }

  /// @notice a modifier that allows the owner or the s_tokenLimitAdmin call the functions
  /// it is applied to.
  modifier onlyAdminOrOwner() {
    if (msg.sender != owner() && msg.sender != s_admin) revert RateLimiter.OnlyCallableByAdminOrOwner();
    _;
  }
}

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

import {EnumerableMap} from "../../vendor/openzeppelin-solidity/v4.8.0/utils/structs/EnumerableMap.sol";

library EnumerableMapAddresses {
  using EnumerableMap for EnumerableMap.UintToAddressMap;

  struct AddressToAddressMap {
    EnumerableMap.UintToAddressMap _inner;
  }

  // solhint-disable-next-line chainlink-solidity/prefix-internal-functions-with-underscore
  function set(AddressToAddressMap storage map, address key, address value) internal returns (bool) {
    return map._inner.set(uint256(uint160(key)), value);
  }

  // solhint-disable-next-line chainlink-solidity/prefix-internal-functions-with-underscore
  function remove(AddressToAddressMap storage map, address key) internal returns (bool) {
    return map._inner.remove(uint256(uint160(key)));
  }

  // solhint-disable-next-line chainlink-solidity/prefix-internal-functions-with-underscore
  function contains(AddressToAddressMap storage map, address key) internal view returns (bool) {
    return map._inner.contains(uint256(uint160(key)));
  }

  // solhint-disable-next-line chainlink-solidity/prefix-internal-functions-with-underscore
  function length(AddressToAddressMap storage map) internal view returns (uint256) {
    return map._inner.length();
  }

  // solhint-disable-next-line chainlink-solidity/prefix-internal-functions-with-underscore
  function at(AddressToAddressMap storage map, uint256 index) internal view returns (address, address) {
    (uint256 key, address value) = map._inner.at(index);
    return (address(uint160(key)), value);
  }

  // solhint-disable-next-line chainlink-solidity/prefix-internal-functions-with-underscore
  function tryGet(AddressToAddressMap storage map, address key) internal view returns (bool, address) {
    return map._inner.tryGet(uint256(uint160(key)));
  }

  // solhint-disable-next-line chainlink-solidity/prefix-internal-functions-with-underscore
  function get(AddressToAddressMap storage map, address key) internal view returns (address) {
    return map._inner.get(uint256(uint160(key)));
  }

  // solhint-disable-next-line chainlink-solidity/prefix-internal-functions-with-underscore
  function get(
    AddressToAddressMap storage map,
    address key,
    string memory errorMessage
  ) internal view returns (address) {
    return map._inner.get(uint256(uint160(key)), errorMessage);
  }
}

// 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 (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 (last updated v4.8.0) (utils/introspection/ERC165Checker.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Library used to query support of an interface declared via {IERC165}.
 *
 * Note that these functions return the actual result of the query: they do not
 * `revert` if an interface is not supported. It is up to the caller to decide
 * what to do in these cases.
 */
library ERC165Checker {
  // As per the EIP-165 spec, no interface should ever match 0xffffffff
  bytes4 private constant _INTERFACE_ID_INVALID = 0xffffffff;

  /**
    * @dev Returns true if `account` supports the {IERC165} interface.
    */
  function supportsERC165(address account) internal view returns (bool) {
    // Any contract that implements ERC165 must explicitly indicate support of
    // InterfaceId_ERC165 and explicitly indicate non-support of InterfaceId_Invalid
    return
      supportsERC165InterfaceUnchecked(account, type(IERC165).interfaceId) &&
      !supportsERC165InterfaceUnchecked(account, _INTERFACE_ID_INVALID);
  }

  /**
    * @dev Returns true if `account` supports the interface defined by
    * `interfaceId`. Support for {IERC165} itself is queried automatically.
    *
    * See {IERC165-supportsInterface}.
    */
  function supportsInterface(address account, bytes4 interfaceId) internal view returns (bool) {
    // query support of both ERC165 as per the spec and support of _interfaceId
    return supportsERC165(account) && supportsERC165InterfaceUnchecked(account, interfaceId);
  }

  /**
    * @dev Returns a boolean array where each value corresponds to the
    * interfaces passed in and whether they're supported or not. This allows
    * you to batch check interfaces for a contract where your expectation
    * is that some interfaces may not be supported.
    *
    * See {IERC165-supportsInterface}.
    *
    * _Available since v3.4._
    */
  function getSupportedInterfaces(
      address account,
      bytes4[] memory interfaceIds
  ) internal view returns (bool[] memory) {
    // an array of booleans corresponding to interfaceIds and whether they're supported or not
    bool[] memory interfaceIdsSupported = new bool[](interfaceIds.length);

    // query support of ERC165 itself
    if (supportsERC165(account)) {
      // query support of each interface in interfaceIds
      for (uint256 i = 0; i < interfaceIds.length; i++) {
        interfaceIdsSupported[i] = supportsERC165InterfaceUnchecked(account, interfaceIds[i]);
      }
    }

    return interfaceIdsSupported;
  }

  /**
    * @dev Returns true if `account` supports all the interfaces defined in
    * `interfaceIds`. Support for {IERC165} itself is queried automatically.
    *
    * Batch-querying can lead to gas savings by skipping repeated checks for
    * {IERC165} support.
    *
    * See {IERC165-supportsInterface}.
    */
  function supportsAllInterfaces(address account, bytes4[] memory interfaceIds) internal view returns (bool) {
    // query support of ERC165 itself
    if (!supportsERC165(account)) {
      return false;
    }

    // query support of each interface in interfaceIds
    for (uint256 i = 0; i < interfaceIds.length; i++) {
      if (!supportsERC165InterfaceUnchecked(account, interfaceIds[i])) {
        return false;
      }
    }

    // all interfaces supported
    return true;
  }

  /**
    * @notice Query if a contract implements an interface, does not check ERC165 support
    * @param account The address of the contract to query for support of an interface
    * @param interfaceId The interface identifier, as specified in ERC-165
    * @return true if the contract at account indicates support of the interface with
    * identifier interfaceId, false otherwise
    * @dev Assumes that account contains a contract that supports ERC165, otherwise
    * the behavior of this method is undefined. This precondition can be checked
    * with {supportsERC165}.
    * Interface identification is specified in ERC-165.
    */
  function supportsERC165InterfaceUnchecked(address account, bytes4 interfaceId) internal view returns (bool) {
    // prepare call
    bytes memory encodedParams = abi.encodeWithSelector(IERC165.supportsInterface.selector, interfaceId);

    // perform static call
    bool success;
    uint256 returnSize;
    uint256 returnValue;
    assembly {
      success := staticcall(30000, account, add(encodedParams, 0x20), mload(encodedParams), 0x00, 0x20)
      returnSize := returndatasize()
      returnValue := mload(0x00)
    }

    return success && returnSize >= 0x20 && returnValue > 0;
  }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

library MerkleMultiProof {
  /// @notice Leaf domain separator, should be used as the first 32 bytes of a leaf's preimage.
  bytes32 internal constant LEAF_DOMAIN_SEPARATOR = 0x0000000000000000000000000000000000000000000000000000000000000000;
  /// @notice Internal domain separator, should be used as the first 32 bytes of an internal node's preiimage.
  bytes32 internal constant INTERNAL_DOMAIN_SEPARATOR =
    0x0000000000000000000000000000000000000000000000000000000000000001;

  uint256 internal constant MAX_NUM_HASHES = 256;

  error InvalidProof();
  error LeavesCannotBeEmpty();

  /// @notice Computes the root based on provided pre-hashed leaf nodes in
  /// leaves, internal nodes in proofs, and using proofFlagBits' i-th bit to
  /// determine if an element of proofs or one of the previously computed leafs
  /// or internal nodes will be used for the i-th hash.
  /// @param leaves Should be pre-hashed and the first 32 bytes of a leaf's
  /// preimage should match LEAF_DOMAIN_SEPARATOR.
  /// @param proofs The hashes to be used instead of a leaf hash when the proofFlagBits
  ///  indicates a proof should be used.
  /// @param proofFlagBits A single uint256 of which each bit indicates whether a leaf or
  ///  a proof needs to be used in a hash operation.
  /// @dev the maximum number of hash operations it set to 256. Any input that would require
  ///  more than 256 hashes to get to a root will revert.
  /// @dev For given input `leaves` = [a,b,c] `proofs` = [D] and `proofFlagBits` = 5
  ///     totalHashes = 3 + 1 - 1 = 3
  ///  ** round 1 **
  ///    proofFlagBits = (5 >> 0) & 1 = true
  ///    hashes[0] = hashPair(a, b)
  ///    (leafPos, hashPos, proofPos) = (2, 0, 0);
  ///
  ///  ** round 2 **
  ///    proofFlagBits = (5 >> 1) & 1 = false
  ///    hashes[1] = hashPair(D, c)
  ///    (leafPos, hashPos, proofPos) = (3, 0, 1);
  ///
  ///  ** round 3 **
  ///    proofFlagBits = (5 >> 2) & 1 = true
  ///    hashes[2] = hashPair(hashes[0], hashes[1])
  ///    (leafPos, hashPos, proofPos) = (3, 2, 1);
  ///
  ///    i = 3 and no longer < totalHashes. The algorithm is done
  ///    return hashes[totalHashes - 1] = hashes[2]; the last hash we computed.
  // We mark this function as internal to force it to be inlined in contracts
  // that use it, but semantically it is public.
  // solhint-disable-next-line chainlink-solidity/prefix-internal-functions-with-underscore
  function merkleRoot(
    bytes32[] memory leaves,
    bytes32[] memory proofs,
    uint256 proofFlagBits
  ) internal pure returns (bytes32) {
    unchecked {
      uint256 leavesLen = leaves.length;
      uint256 proofsLen = proofs.length;
      if (leavesLen == 0) revert LeavesCannotBeEmpty();
      if (!(leavesLen <= MAX_NUM_HASHES + 1 && proofsLen <= MAX_NUM_HASHES + 1)) revert InvalidProof();
      uint256 totalHashes = leavesLen + proofsLen - 1;
      if (!(totalHashes <= MAX_NUM_HASHES)) revert InvalidProof();
      if (totalHashes == 0) {
        return leaves[0];
      }
      bytes32[] memory hashes = new bytes32[](totalHashes);
      (uint256 leafPos, uint256 hashPos, uint256 proofPos) = (0, 0, 0);

      for (uint256 i = 0; i < totalHashes; ++i) {
        // Checks if the bit flag signals the use of a supplied proof or a leaf/previous hash.
        bytes32 a;
        if (proofFlagBits & (1 << i) == (1 << i)) {
          // Use a leaf or a previously computed hash.
          if (leafPos < leavesLen) {
            a = leaves[leafPos++];
          } else {
            a = hashes[hashPos++];
          }
        } else {
          // Use a supplied proof.
          a = proofs[proofPos++];
        }

        // The second part of the hashed pair is never a proof as hashing two proofs would result in a
        // hash that can already be computed offchain.
        bytes32 b;
        if (leafPos < leavesLen) {
          b = leaves[leafPos++];
        } else {
          b = hashes[hashPos++];
        }

        if (!(hashPos <= i)) revert InvalidProof();

        hashes[i] = _hashPair(a, b);
      }
      if (!(hashPos == totalHashes - 1 && leafPos == leavesLen && proofPos == proofsLen)) revert InvalidProof();
      // Return the last hash.
      return hashes[totalHashes - 1];
    }
  }

  /// @notice Hashes two bytes32 objects in their given order, prepended by the
  /// INTERNAL_DOMAIN_SEPARATOR.
  function _hashInternalNode(bytes32 left, bytes32 right) private pure returns (bytes32 hash) {
    return keccak256(abi.encode(INTERNAL_DOMAIN_SEPARATOR, left, right));
  }

  /// @notice Hashes two bytes32 objects. The order is taken into account,
  /// using the lower value first.
  function _hashPair(bytes32 a, bytes32 b) private pure returns (bytes32) {
    return a < b ? _hashInternalNode(a, b) : _hashInternalNode(b, a);
  }
}

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

import {ConfirmedOwner} from "../../ConfirmedOwner.sol";

/// @title The OwnerIsCreator contract
/// @notice A contract with helpers for basic contract ownership.
contract OwnerIsCreator is ConfirmedOwner {
  constructor() ConfirmedOwner(msg.sender) {}
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

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

abstract contract OCR2Abstract is TypeAndVersionInterface {
  // Maximum number of oracles the offchain reporting protocol is designed for
  uint256 internal constant MAX_NUM_ORACLES = 31;

  /// @notice triggers a new run of the offchain reporting protocol
  /// @param previousConfigBlockNumber block in which the previous config was set, to simplify historic analysis
  /// @param configDigest configDigest of this configuration
  /// @param configCount ordinal number of this config setting among all config settings over the life of this contract
  /// @param signers ith element is address ith oracle uses to sign a report
  /// @param transmitters ith element is address ith oracle uses to transmit a report via the transmit method
  /// @param f maximum number of faulty/dishonest oracles the protocol can tolerate while still working correctly
  /// @param onchainConfig serialized configuration used by the contract (and possibly oracles)
  /// @param offchainConfigVersion version of the serialization format used for "offchainConfig" parameter
  /// @param offchainConfig serialized configuration used by the oracles exclusively and only passed through the contract
  event ConfigSet(
    uint32 previousConfigBlockNumber,
    bytes32 configDigest,
    uint64 configCount,
    address[] signers,
    address[] transmitters,
    uint8 f,
    bytes onchainConfig,
    uint64 offchainConfigVersion,
    bytes offchainConfig
  );

  /// @notice sets offchain reporting protocol configuration incl. participating oracles
  /// @param signers addresses with which oracles sign the reports
  /// @param transmitters addresses oracles use to transmit the reports
  /// @param f number of faulty oracles the system can tolerate
  /// @param onchainConfig serialized configuration used by the contract (and possibly oracles)
  /// @param offchainConfigVersion version number for offchainEncoding schema
  /// @param offchainConfig serialized configuration used by the oracles exclusively and only passed through the contract
  function setOCR2Config(
    address[] memory signers,
    address[] memory transmitters,
    uint8 f,
    bytes memory onchainConfig,
    uint64 offchainConfigVersion,
    bytes memory offchainConfig
  ) external virtual;

  /// @notice information about current offchain reporting protocol configuration
  /// @return configCount ordinal number of current config, out of all configs applied to this contract so far
  /// @return blockNumber block at which this config was set
  /// @return configDigest domain-separation tag for current config (see _configDigestFromConfigData)
  function latestConfigDetails()
    external
    view
    virtual
    returns (uint32 configCount, uint32 blockNumber, bytes32 configDigest);

  function _configDigestFromConfigData(
    uint256 chainId,
    address contractAddress,
    uint64 configCount,
    address[] memory signers,
    address[] memory transmitters,
    uint8 f,
    bytes memory onchainConfig,
    uint64 offchainConfigVersion,
    bytes memory offchainConfig
  ) internal pure returns (bytes32) {
    uint256 h = uint256(
      keccak256(
        abi.encode(
          chainId,
          contractAddress,
          configCount,
          signers,
          transmitters,
          f,
          onchainConfig,
          offchainConfigVersion,
          offchainConfig
        )
      )
    );
    uint256 prefixMask = type(uint256).max << (256 - 16); // 0xFFFF00..00
    uint256 prefix = 0x0001 << (256 - 16); // 0x000100..00
    return bytes32((prefix & prefixMask) | (h & ~prefixMask));
  }

  /// @notice optionally emitted to indicate the latest configDigest and epoch for
  /// which a report was successfully transmitted. Alternatively, the contract may
  /// use latestConfigDigestAndEpoch with scanLogs set to false.
  event Transmitted(bytes32 configDigest, uint32 epoch);

  /// @notice optionally returns the latest configDigest and epoch for which a
  /// report was successfully transmitted. Alternatively, the contract may return
  /// scanLogs set to true and use Transmitted events to provide this information
  /// to offchain watchers.
  /// @return scanLogs indicates whether to rely on the configDigest and epoch
  /// returned or whether to scan logs for the Transmitted event instead.
  /// @return configDigest
  /// @return epoch
  function latestConfigDigestAndEpoch()
    external
    view
    virtual
    returns (bool scanLogs, bytes32 configDigest, uint32 epoch);

  /// @notice transmit is called to post a new report to the contract
  /// @param report serialized report, which the signatures are signing.
  /// @param rs ith element is the R components of the ith signature on report. Must have at most MAX_NUM_ORACLES entries
  /// @param ss ith element is the S components of the ith signature on report. Must have at most MAX_NUM_ORACLES entries
  /// @param rawVs ith element is the the V component of the ith signature
  function transmit(
    // NOTE: If these parameters are changed, expectedMsgDataLength and/or
    // TRANSMIT_MSGDATA_CONSTANT_LENGTH_COMPONENT need to be changed accordingly
    bytes32[3] calldata reportContext,
    bytes calldata report,
    bytes32[] calldata rs,
    bytes32[] calldata ss,
    bytes32 rawVs // signatures
  ) external virtual;
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;

library USDPriceWith18Decimals {
  /// @notice Takes a price in USD, with 18 decimals per 1e18 token amount,
  /// and amount of the smallest token denomination,
  /// calculates the value in USD with 18 decimals.
  /// @param tokenPrice The USD price of the token.
  /// @param tokenAmount Amount of the smallest token denomination.
  /// @return USD value with 18 decimals.
  /// @dev this function assumes that no more than 1e59 US dollar worth of token is passed in.
  /// If more is sent, this function will overflow and revert.
  /// Since there isn't even close to 1e59 dollars, this is ok for all legit tokens.
  function _calcUSDValueFromTokenAmount(uint192 tokenPrice, uint256 tokenAmount) internal pure returns (uint256) {
    /// LINK Example:
    /// tokenPrice:         8e18 -> $8/LINK, as 1e18 token amount is 1 LINK, worth 8 USD, or 8e18 with 18 decimals
    /// tokenAmount:        2e18 -> 2 LINK
    /// result:             8e18 * 2e18 / 1e18 -> 16e18 with 18 decimals = $16

    /// USDC Example:
    /// tokenPrice:         1e30 -> $1/USDC, as 1e18 token amount is 1e12 USDC, worth 1e12 USD, or 1e30 with 18 decimals
    /// tokenAmount:        5e6  -> 5 USDC
    /// result:             1e30 * 5e6 / 1e18 -> 5e18 with 18 decimals = $5
    return (tokenPrice * tokenAmount) / 1e18;
  }

  /// @notice Takes a price in USD, with 18 decimals per 1e18 token amount,
  /// and USD value with 18 decimals,
  /// calculates amount of the smallest token denomination.
  /// @param tokenPrice The USD price of the token.
  /// @param usdValue USD value with 18 decimals.
  /// @return Amount of the smallest token denomination.
  function _calcTokenAmountFromUSDValue(uint192 tokenPrice, uint256 usdValue) internal pure returns (uint256) {
    /// LINK Example:
    /// tokenPrice:          8e18 -> $8/LINK, as 1e18 token amount is 1 LINK, worth 8 USD, or 8e18 with 18 decimals
    /// usdValue:           16e18 -> $16
    /// result:             16e18 * 1e18 / 8e18 -> 2e18 = 2 LINK

    /// USDC Example:
    /// tokenPrice:         1e30 -> $1/USDC, as 1e18 token amount is 1e12 USDC, worth 1e12 USD, or 1e30 with 18 decimals
    /// usdValue:           5e18 -> $5
    /// result:             5e18 * 1e18 / 1e30 -> 5e6 = 5 USDC
    return (usdValue * 1e18) / tokenPrice;
  }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/structs/EnumerableMap.sol)
// This file was procedurally generated from scripts/generate/templates/EnumerableMap.js.

pragma solidity ^0.8.0;

import "./EnumerableSet.sol";

/**
 * @dev Library for managing an enumerable variant of Solidity's
 * https://solidity.readthedocs.io/en/latest/types.html#mapping-types[`mapping`]
 * type.
 *
 * Maps have the following properties:
 *
 * - Entries are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Entries are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableMap for EnumerableMap.UintToAddressMap;
 *
 *     // Declare a set state variable
 *     EnumerableMap.UintToAddressMap private myMap;
 * }
 * ```
 *
 * The following map types are supported:
 *
 * - `uint256 -> address` (`UintToAddressMap`) since v3.0.0
 * - `address -> uint256` (`AddressToUintMap`) since v4.6.0
 * - `bytes32 -> bytes32` (`Bytes32ToBytes32Map`) since v4.6.0
 * - `uint256 -> uint256` (`UintToUintMap`) since v4.7.0
 * - `bytes32 -> uint256` (`Bytes32ToUintMap`) since v4.7.0
 *
 * [WARNING]
 * ====
 * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure
 * unusable.
 * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.
 *
 * In order to clean an EnumerableMap, you can either remove all elements one by one or create a fresh instance using an
 * array of EnumerableMap.
 * ====
 */
library EnumerableMap {
  using EnumerableSet for EnumerableSet.Bytes32Set;

  // To implement this library for multiple types with as little code
  // repetition as possible, we write it in terms of a generic Map type with
  // bytes32 keys and values.
  // The Map implementation uses private functions, and user-facing
  // implementations (such as Uint256ToAddressMap) are just wrappers around
  // the underlying Map.
  // This means that we can only create new EnumerableMaps for types that fit
  // in bytes32.

  struct Bytes32ToBytes32Map {
    // Storage of keys
    EnumerableSet.Bytes32Set _keys;
    mapping(bytes32 => bytes32) _values;
  }

  /**
   * @dev Adds a key-value pair to a map, or updates the value for an existing
   * key. O(1).
   *
   * Returns true if the key was added to the map, that is if it was not
   * already present.
   */
  function set(
    Bytes32ToBytes32Map storage map,
    bytes32 key,
    bytes32 value
  ) internal returns (bool) {
    map._values[key] = value;
    return map._keys.add(key);
  }

  /**
   * @dev Removes a key-value pair from a map. O(1).
   *
   * Returns true if the key was removed from the map, that is if it was present.
   */
  function remove(Bytes32ToBytes32Map storage map, bytes32 key) internal returns (bool) {
    delete map._values[key];
    return map._keys.remove(key);
  }

  /**
   * @dev Returns true if the key is in the map. O(1).
   */
  function contains(Bytes32ToBytes32Map storage map, bytes32 key) internal view returns (bool) {
    return map._keys.contains(key);
  }

  /**
   * @dev Returns the number of key-value pairs in the map. O(1).
   */
  function length(Bytes32ToBytes32Map storage map) internal view returns (uint256) {
    return map._keys.length();
  }

  /**
   * @dev Returns the key-value pair stored at position `index` in the map. O(1).
   *
   * Note that there are no guarantees on the ordering of entries inside the
   * array, and it may change when more entries are added or removed.
   *
   * Requirements:
   *
   * - `index` must be strictly less than {length}.
   */
  function at(Bytes32ToBytes32Map storage map, uint256 index) internal view returns (bytes32, bytes32) {
    bytes32 key = map._keys.at(index);
    return (key, map._values[key]);
  }

  /**
   * @dev Tries to returns the value associated with `key`. O(1).
   * Does not revert if `key` is not in the map.
   */
  function tryGet(Bytes32ToBytes32Map storage map, bytes32 key) internal view returns (bool, bytes32) {
    bytes32 value = map._values[key];
    if (value == bytes32(0)) {
      return (contains(map, key), bytes32(0));
    } else {
      return (true, value);
    }
  }

  /**
   * @dev Returns the value associated with `key`. O(1).
   *
   * Requirements:
   *
   * - `key` must be in the map.
   */
  function get(Bytes32ToBytes32Map storage map, bytes32 key) internal view returns (bytes32) {
    bytes32 value = map._values[key];
    require(value != 0 || contains(map, key), "EnumerableMap: nonexistent key");
    return value;
  }

  /**
   * @dev Same as {get}, with a custom error message when `key` is not in the map.
   *
   * CAUTION: This function is deprecated because it requires allocating memory for the error
   * message unnecessarily. For custom revert reasons use {tryGet}.
   */
  function get(
    Bytes32ToBytes32Map storage map,
    bytes32 key,
    string memory errorMessage
  ) internal view returns (bytes32) {
    bytes32 value = map._values[key];
    require(value != 0 || contains(map, key), errorMessage);
    return value;
  }

  // UintToUintMap

  struct UintToUintMap {
    Bytes32ToBytes32Map _inner;
  }

  /**
   * @dev Adds a key-value pair to a map, or updates the value for an existing
   * key. O(1).
   *
   * Returns true if the key was added to the map, that is if it was not
   * already present.
   */
  function set(
    UintToUintMap storage map,
    uint256 key,
    uint256 value
  ) internal returns (bool) {
    return set(map._inner, bytes32(key), bytes32(value));
  }

  /**
   * @dev Removes a value from a set. O(1).
   *
   * Returns true if the key was removed from the map, that is if it was present.
   */
  function remove(UintToUintMap storage map, uint256 key) internal returns (bool) {
    return remove(map._inner, bytes32(key));
  }

  /**
   * @dev Returns true if the key is in the map. O(1).
   */
  function contains(UintToUintMap storage map, uint256 key) internal view returns (bool) {
    return contains(map._inner, bytes32(key));
  }

  /**
   * @dev Returns the number of elements in the map. O(1).
   */
  function length(UintToUintMap storage map) internal view returns (uint256) {
    return length(map._inner);
  }

  /**
   * @dev Returns the element 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(UintToUintMap storage map, uint256 index) internal view returns (uint256, uint256) {
    (bytes32 key, bytes32 value) = at(map._inner, index);
    return (uint256(key), uint256(value));
  }

  /**
   * @dev Tries to returns the value associated with `key`. O(1).
   * Does not revert if `key` is not in the map.
   */
  function tryGet(UintToUintMap storage map, uint256 key) internal view returns (bool, uint256) {
    (bool success, bytes32 value) = tryGet(map._inner, bytes32(key));
    return (success, uint256(value));
  }

  /**
   * @dev Returns the value associated with `key`. O(1).
   *
   * Requirements:
   *
   * - `key` must be in the map.
   */
  function get(UintToUintMap storage map, uint256 key) internal view returns (uint256) {
    return uint256(get(map._inner, bytes32(key)));
  }

  /**
   * @dev Same as {get}, with a custom error message when `key` is not in the map.
   *
   * CAUTION: This function is deprecated because it requires allocating memory for the error
   * message unnecessarily. For custom revert reasons use {tryGet}.
   */
  function get(
    UintToUintMap storage map,
    uint256 key,
    string memory errorMessage
  ) internal view returns (uint256) {
    return uint256(get(map._inner, bytes32(key), errorMessage));
  }

  // UintToAddressMap

  struct UintToAddressMap {
    Bytes32ToBytes32Map _inner;
  }

  /**
   * @dev Adds a key-value pair to a map, or updates the value for an existing
   * key. O(1).
   *
   * Returns true if the key was added to the map, that is if it was not
   * already present.
   */
  function set(
    UintToAddressMap storage map,
    uint256 key,
    address value
  ) internal returns (bool) {
    return set(map._inner, bytes32(key), bytes32(uint256(uint160(value))));
  }

  /**
   * @dev Removes a value from a set. O(1).
   *
   * Returns true if the key was removed from the map, that is if it was present.
   */
  function remove(UintToAddressMap storage map, uint256 key) internal returns (bool) {
    return remove(map._inner, bytes32(key));
  }

  /**
   * @dev Returns true if the key is in the map. O(1).
   */
  function contains(UintToAddressMap storage map, uint256 key) internal view returns (bool) {
    return contains(map._inner, bytes32(key));
  }

  /**
   * @dev Returns the number of elements in the map. O(1).
   */
  function length(UintToAddressMap storage map) internal view returns (uint256) {
    return length(map._inner);
  }

  /**
   * @dev Returns the element 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(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) {
    (bytes32 key, bytes32 value) = at(map._inner, index);
    return (uint256(key), address(uint160(uint256(value))));
  }

  /**
   * @dev Tries to returns the value associated with `key`. O(1).
   * Does not revert if `key` is not in the map.
   */
  function tryGet(UintToAddressMap storage map, uint256 key) internal view returns (bool, address) {
    (bool success, bytes32 value) = tryGet(map._inner, bytes32(key));
    return (success, address(uint160(uint256(value))));
  }

  /**
   * @dev Returns the value associated with `key`. O(1).
   *
   * Requirements:
   *
   * - `key` must be in the map.
   */
  function get(UintToAddressMap storage map, uint256 key) internal view returns (address) {
    return address(uint160(uint256(get(map._inner, bytes32(key)))));
  }

  /**
   * @dev Same as {get}, with a custom error message when `key` is not in the map.
   *
   * CAUTION: This function is deprecated because it requires allocating memory for the error
   * message unnecessarily. For custom revert reasons use {tryGet}.
   */
  function get(
    UintToAddressMap storage map,
    uint256 key,
    string memory errorMessage
  ) internal view returns (address) {
    return address(uint160(uint256(get(map._inner, bytes32(key), errorMessage))));
  }

  // AddressToUintMap

  struct AddressToUintMap {
    Bytes32ToBytes32Map _inner;
  }

  /**
   * @dev Adds a key-value pair to a map, or updates the value for an existing
   * key. O(1).
   *
   * Returns true if the key was added to the map, that is if it was not
   * already present.
   */
  function set(
    AddressToUintMap storage map,
    address key,
    uint256 value
  ) internal returns (bool) {
    return set(map._inner, bytes32(uint256(uint160(key))), bytes32(value));
  }

  /**
   * @dev Removes a value from a set. O(1).
   *
   * Returns true if the key was removed from the map, that is if it was present.
   */
  function remove(AddressToUintMap storage map, address key) internal returns (bool) {
    return remove(map._inner, bytes32(uint256(uint160(key))));
  }

  /**
   * @dev Returns true if the key is in the map. O(1).
   */
  function contains(AddressToUintMap storage map, address key) internal view returns (bool) {
    return contains(map._inner, bytes32(uint256(uint160(key))));
  }

  /**
   * @dev Returns the number of elements in the map. O(1).
   */
  function length(AddressToUintMap storage map) internal view returns (uint256) {
    return length(map._inner);
  }

  /**
   * @dev Returns the element 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(AddressToUintMap storage map, uint256 index) internal view returns (address, uint256) {
    (bytes32 key, bytes32 value) = at(map._inner, index);
    return (address(uint160(uint256(key))), uint256(value));
  }

  /**
   * @dev Tries to returns the value associated with `key`. O(1).
   * Does not revert if `key` is not in the map.
   */
  function tryGet(AddressToUintMap storage map, address key) internal view returns (bool, uint256) {
    (bool success, bytes32 value) = tryGet(map._inner, bytes32(uint256(uint160(key))));
    return (success, uint256(value));
  }

  /**
   * @dev Returns the value associated with `key`. O(1).
   *
   * Requirements:
   *
   * - `key` must be in the map.
   */
  function get(AddressToUintMap storage map, address key) internal view returns (uint256) {
    return uint256(get(map._inner, bytes32(uint256(uint160(key)))));
  }

  /**
   * @dev Same as {get}, with a custom error message when `key` is not in the map.
   *
   * CAUTION: This function is deprecated because it requires allocating memory for the error
   * message unnecessarily. For custom revert reasons use {tryGet}.
   */
  function get(
    AddressToUintMap storage map,
    address key,
    string memory errorMessage
  ) internal view returns (uint256) {
    return uint256(get(map._inner, bytes32(uint256(uint160(key))), errorMessage));
  }

  // Bytes32ToUintMap

  struct Bytes32ToUintMap {
    Bytes32ToBytes32Map _inner;
  }

  /**
   * @dev Adds a key-value pair to a map, or updates the value for an existing
   * key. O(1).
   *
   * Returns true if the key was added to the map, that is if it was not
   * already present.
   */
  function set(
    Bytes32ToUintMap storage map,
    bytes32 key,
    uint256 value
  ) internal returns (bool) {
    return set(map._inner, key, bytes32(value));
  }

  /**
   * @dev Removes a value from a set. O(1).
   *
   * Returns true if the key was removed from the map, that is if it was present.
   */
  function remove(Bytes32ToUintMap storage map, bytes32 key) internal returns (bool) {
    return remove(map._inner, key);
  }

  /**
   * @dev Returns true if the key is in the map. O(1).
   */
  function contains(Bytes32ToUintMap storage map, bytes32 key) internal view returns (bool) {
    return contains(map._inner, key);
  }

  /**
   * @dev Returns the number of elements in the map. O(1).
   */
  function length(Bytes32ToUintMap storage map) internal view returns (uint256) {
    return length(map._inner);
  }

  /**
   * @dev Returns the element 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(Bytes32ToUintMap storage map, uint256 index) internal view returns (bytes32, uint256) {
    (bytes32 key, bytes32 value) = at(map._inner, index);
    return (key, uint256(value));
  }

  /**
   * @dev Tries to returns the value associated with `key`. O(1).
   * Does not revert if `key` is not in the map.
   */
  function tryGet(Bytes32ToUintMap storage map, bytes32 key) internal view returns (bool, uint256) {
    (bool success, bytes32 value) = tryGet(map._inner, key);
    return (success, uint256(value));
  }

  /**
   * @dev Returns the value associated with `key`. O(1).
   *
   * Requirements:
   *
   * - `key` must be in the map.
   */
  function get(Bytes32ToUintMap storage map, bytes32 key) internal view returns (uint256) {
    return uint256(get(map._inner, key));
  }

  /**
   * @dev Same as {get}, with a custom error message when `key` is not in the map.
   *
   * CAUTION: This function is deprecated because it requires allocating memory for the error
   * message unnecessarily. For custom revert reasons use {tryGet}.
   */
  function get(
    Bytes32ToUintMap storage map,
    bytes32 key,
    string memory errorMessage
  ) internal view returns (uint256) {
    return uint256(get(map._inner, key, 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);
}

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

import "./ConfirmedOwnerWithProposal.sol";

/**
 * @title The ConfirmedOwner contract
 * @notice A contract with helpers for basic contract ownership.
 */
contract ConfirmedOwner is ConfirmedOwnerWithProposal {
  constructor(address newOwner) ConfirmedOwnerWithProposal(newOwner, address(0)) {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/structs/EnumerableSet.sol)
// This file was procedurally generated from scripts/generate/templates/EnumerableSet.js.

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.
 *
 * [WARNING]
 * ====
 * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure
 * unusable.
 * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.
 *
 * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an
 * array of EnumerableSet.
 * ====
 */
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) {
    bytes32[] memory store = _values(set._inner);
    bytes32[] memory result;

    /// @solidity memory-safe-assembly
    assembly {
      result := store
    }

    return result;
  }

  // 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;

    /// @solidity memory-safe-assembly
    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 in 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;

    /// @solidity memory-safe-assembly
    assembly {
      result := store
    }

    return result;
  }
}

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

import "./interfaces/OwnableInterface.sol";

/**
 * @title The ConfirmedOwner contract
 * @notice A contract with helpers for basic contract ownership.
 */
contract ConfirmedOwnerWithProposal is OwnableInterface {
  address private s_owner;
  address private s_pendingOwner;

  event OwnershipTransferRequested(address indexed from, address indexed to);
  event OwnershipTransferred(address indexed from, address indexed to);

  constructor(address newOwner, address pendingOwner) {
    require(newOwner != address(0), "Cannot set owner to zero");

    s_owner = newOwner;
    if (pendingOwner != address(0)) {
      _transferOwnership(pendingOwner);
    }
  }

  /**
   * @notice Allows an owner to begin transferring ownership to a new address,
   * pending.
   */
  function transferOwnership(address to) public override onlyOwner {
    _transferOwnership(to);
  }

  /**
   * @notice Allows an ownership transfer to be completed by the recipient.
   */
  function acceptOwnership() external override {
    require(msg.sender == s_pendingOwner, "Must be proposed owner");

    address oldOwner = s_owner;
    s_owner = msg.sender;
    s_pendingOwner = address(0);

    emit OwnershipTransferred(oldOwner, msg.sender);
  }

  /**
   * @notice Get the current owner
   */
  function owner() public view override returns (address) {
    return s_owner;
  }

  /**
   * @notice validate, transfer ownership, and emit relevant events
   */
  function _transferOwnership(address to) private {
    require(to != msg.sender, "Cannot transfer to self");

    s_pendingOwner = to;

    emit OwnershipTransferRequested(s_owner, to);
  }

  /**
   * @notice validate access
   */
  function _validateOwnership() internal view {
    require(msg.sender == s_owner, "Only callable by owner");
  }

  /**
   * @notice Reverts if called by anyone other than the contract owner.
   */
  modifier onlyOwner() {
    _validateOwnership();
    _;
  }
}

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

interface OwnableInterface {
  function owner() external returns (address);

  function transferOwnership(address recipient) external;

  function acceptOwnership() external;
}

{
  "remappings": [
    "@eth-optimism/=node_modules/@eth-optimism/",
    "@openzeppelin/=node_modules/@openzeppelin/",
    "ds-test/=foundry-lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=foundry-lib/openzeppelin-contracts/lib/erc4626-tests/",
    "forge-std/=foundry-lib/forge-std/src/",
    "hardhat/=node_modules/hardhat/",
    "openzeppelin-contracts/=foundry-lib/openzeppelin-contracts/contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 26000
  },
  "metadata": {
    "bytecodeHash": "none",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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-----Decoded View---------------
Arg [0] : staticConfig (tuple): System.Collections.Generic.List`1[Nethereum.ABI.FunctionEncoding.ParameterOutput]
Arg [1] : sourceTokens (address[]): 0x350a791Bfc2C21F9Ed5d10980Dad2e2638ffa7f6,0xb2F30A7C980f052f02563fb518dcc39e6bf38175
Arg [2] : pools (address[]): 0xC2291992A08eBFDfedfE248F2CCD34Da63570DF4,0x057152DB365B47851B0A0bd431644b8eE21fE1b4
Arg [3] : rateLimiterConfig (tuple): System.Collections.Generic.List`1[Nethereum.ABI.FunctionEncoding.ParameterOutput]

-----Encoded View---------------
17 Constructor Arguments found :
Arg [0] : 0000000000000000000000008befca744c6f2b567b1863dcf055c593afdc11a0
Arg [1] : 00000000000000000000000000000000000000000000000045849994fc9c7b15
Arg [2] : 00000000000000000000000000000000000000000000000033d343f77863cab8
Arg [3] : 000000000000000000000000ad1b1f2a6dd55627e3893b771a00cd43f69dce35
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [5] : 000000000000000000000000411de17f12d1a34ecc7f45f49844626267c75e81
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000160
Arg [7] : 00000000000000000000000000000000000000000000000000000000000001c0
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [9] : 00000000000000000000000000000000000000000000152d02c7e14af6800000
Arg [10] : 0000000000000000000000000000000000000000000000090d972f32323c0000
Arg [11] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [12] : 000000000000000000000000350a791bfc2c21f9ed5d10980dad2e2638ffa7f6
Arg [13] : 000000000000000000000000b2f30a7c980f052f02563fb518dcc39e6bf38175
Arg [14] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [15] : 000000000000000000000000c2291992a08ebfdfedfe248f2ccd34da63570df4
Arg [16] : 000000000000000000000000057152db365b47851b0a0bd431644b8ee21fe1b4