// File: contracts/jobs/v2/TendV2Keep3rJob.sol



// SPDX-License-Identifier: MIT

pragma solidity 0.8.4;

import "./V2Keep3rPublicJob.sol";

contract TendV2Keep3rJob is V2Keep3rPublicJob {
    constructor(
        address _mechanicsRegistry,
        address _yOracle,
        address _keep3r,
        address _bond,
        uint256 _minBond,
        uint256 _earned,
        uint256 _age,
        bool _onlyEOA,
        address _v2Keeper,
        uint256 _workCooldown
    )
        V2Keep3rPublicJob(_mechanicsRegistry, _yOracle, _keep3r, _bond, _minBond, _earned, _age, _onlyEOA, _v2Keeper, _workCooldown)
    // solhint-disable-next-line no-empty-blocks
    {

    }

    function workable(address _strategy) external view override returns (bool) {
        return _workable(_strategy);
    }

    function _workable(address _strategy) internal view override returns (bool) {
        if (!super._workable(_strategy)) return false;
        return IBaseStrategy(_strategy).tendTrigger(_getCallCosts(_strategy));
    }

    function _work(address _strategy) internal override {
        lastWorkAt[_strategy] = block.timestamp;
        V2Keeper.tend(_strategy);
    }

    // Keep3r actions
    function work(address _strategy) external override notPaused onlyKeeper(msg.sender) returns (uint256 _credits) {
        _credits = _workInternal(_strategy);
        _paysKeeperAmount(msg.sender, _credits);
    }
}

// File: contracts/jobs/v2/V2Keep3rPublicJob.sol



// SPDX-License-Identifier: MIT

pragma solidity 0.8.4;

import "./V2Keep3rJob.sol";

import "../../interfaces/jobs/v2/IV2Keep3rPublicJob.sol";

abstract contract V2Keep3rPublicJob is V2Keep3rJob, IV2Keep3rPublicJob {
    constructor(
        address _mechanicsRegistry,
        address _yOracle,
        address _keep3r,
        address _bond,
        uint256 _minBond,
        uint256 _earned,
        uint256 _age,
        bool _onlyEOA,
        address _v2Keeper,
        uint256 _workCooldown
    ) V2Keep3rJob(_mechanicsRegistry, _yOracle, _keep3r, _bond, _minBond, _earned, _age, _onlyEOA, _v2Keeper, _workCooldown) {}

    // Mechanics keeper bypass
    function forceWork(address _strategy) external override onlyGovernorOrMechanic {
        _forceWork(_strategy);
    }
}

// File: contracts/jobs/v2/V2Keep3rJob.sol



// SPDX-License-Identifier: MIT

pragma solidity 0.8.4;

import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol";
import "@lbertenasco/contract-utils/contracts/abstract/MachineryReady.sol";
import "@lbertenasco/contract-utils/interfaces/keep3r/IKeep3rV1Helper.sol";
import "@lbertenasco/contract-utils/contracts/keep3r/Keep3rAbstract.sol";

import "../../interfaces/jobs/v2/IV2Keeper.sol";
import "../../interfaces/jobs/v2/IV2Keep3rJob.sol";

import "../../interfaces/yearn/IBaseStrategy.sol";
import "../../interfaces/oracle/IYOracle.sol";
import "../../interfaces/keep3r/IChainLinkFeed.sol";

abstract contract V2Keep3rJob is MachineryReady, Keep3r, IV2Keep3rJob {
    using EnumerableSet for EnumerableSet.AddressSet;

    address public constant WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    address public override fastGasOracle = 0x169E633A2D1E6c10dD91238Ba11c4A708dfEF37C;

    uint256 public constant PRECISION = 1_000;
    uint256 public constant MAX_REWARD_MULTIPLIER = 1 * PRECISION; // 1x max reward multiplier
    uint256 public override rewardMultiplier = 950;

    IV2Keeper public V2Keeper;

    address public yOracle;

    EnumerableSet.AddressSet internal _availableStrategies;

    mapping(address => uint256) public requiredAmount;
    mapping(address => uint256) public lastWorkAt;

    // custom cost oracle calcs
    mapping(address => address) public costToken;
    mapping(address => address) public costPair;

    uint256 public workCooldown;

    constructor(
        address _mechanicsRegistry,
        address _yOracle,
        address _keep3r,
        address _bond,
        uint256 _minBond,
        uint256 _earned,
        uint256 _age,
        bool _onlyEOA,
        address _v2Keeper,
        uint256 _workCooldown
    ) MachineryReady(_mechanicsRegistry) Keep3r(_keep3r) {
        _setYOracle(_yOracle);
        _setKeep3rRequirements(_bond, _minBond, _earned, _age, _onlyEOA);
        V2Keeper = IV2Keeper(_v2Keeper);
        if (_workCooldown > 0) _setWorkCooldown(_workCooldown);
    }

    // Keep3r Setters
    function setKeep3r(address _keep3r) external override onlyGovernor {
        _setKeep3r(_keep3r);
    }

    function setV2Keep3r(address _v2Keeper) external override onlyGovernor {
        V2Keeper = IV2Keeper(_v2Keeper);
    }

    function setYOracle(address _yOracle) external override onlyGovernor {
        _setYOracle(_yOracle);
    }

    function _setYOracle(address _yOracle) internal {
        yOracle = _yOracle;
    }

    function setFastGasOracle(address _fastGasOracle) external override onlyGovernor {
        require(_fastGasOracle != address(0), "V2Keep3rJob::set-fas-gas-oracle:not-zero-address");
        fastGasOracle = _fastGasOracle;
    }

    function setKeep3rRequirements(
        address _bond,
        uint256 _minBond,
        uint256 _earned,
        uint256 _age,
        bool _onlyEOA
    ) external override onlyGovernor {
        _setKeep3rRequirements(_bond, _minBond, _earned, _age, _onlyEOA);
    }

    function setRewardMultiplier(uint256 _rewardMultiplier) external override onlyGovernorOrMechanic {
        _setRewardMultiplier(_rewardMultiplier);
        emit SetRewardMultiplier(_rewardMultiplier);
    }

    function _setRewardMultiplier(uint256 _rewardMultiplier) internal {
        require(_rewardMultiplier <= MAX_REWARD_MULTIPLIER, "V2Keep3rJob::set-reward-multiplier:multiplier-exceeds-max");
        rewardMultiplier = _rewardMultiplier;
    }

    // Setters
    function setWorkCooldown(uint256 _workCooldown) external override onlyGovernorOrMechanic {
        _setWorkCooldown(_workCooldown);
    }

    function _setWorkCooldown(uint256 _workCooldown) internal {
        require(_workCooldown > 0, "V2Keep3rJob::set-work-cooldown:should-not-be-zero");
        workCooldown = _workCooldown;
    }

    // Governor
    function addStrategies(
        address[] calldata _strategies,
        uint256[] calldata _requiredAmounts,
        address[] calldata _costTokens,
        address[] calldata _costPairs
    ) external override onlyGovernorOrMechanic {
        require(_strategies.length == _requiredAmounts.length, "V2Keep3rJob::add-strategies:strategies-required-amounts-different-length");
        for (uint256 i; i < _strategies.length; i++) {
            _addStrategy(_strategies[i], _requiredAmounts[i], _costTokens[i], _costPairs[i]);
        }
    }

    function addStrategy(
        address _strategy,
        uint256 _requiredAmount,
        address _costToken,
        address _costPair
    ) external override onlyGovernorOrMechanic {
        _addStrategy(_strategy, _requiredAmount, _costToken, _costPair);
    }

    function _addStrategy(
        address _strategy,
        uint256 _requiredAmount,
        address _costToken,
        address _costPair
    ) internal {
        require(!_availableStrategies.contains(_strategy), "V2Keep3rJob::add-strategy:strategy-already-added");
        _setRequiredAmount(_strategy, _requiredAmount);
        _setCostTokenAndPair(_strategy, _costToken, _costPair);
        emit StrategyAdded(_strategy, _requiredAmount);
        _availableStrategies.add(_strategy);
    }

    function updateRequiredAmounts(address[] calldata _strategies, uint256[] calldata _requiredAmounts)
        external
        override
        onlyGovernorOrMechanic
    {
        require(_strategies.length == _requiredAmounts.length, "V2Keep3rJob::update-strategies:strategies-required-amounts-different-length");
        for (uint256 i; i < _strategies.length; i++) {
            _updateRequiredAmount(_strategies[i], _requiredAmounts[i]);
        }
    }

    function updateRequiredAmount(address _strategy, uint256 _requiredAmount) external override onlyGovernorOrMechanic {
        _updateRequiredAmount(_strategy, _requiredAmount);
    }

    function _updateRequiredAmount(address _strategy, uint256 _requiredAmount) internal {
        require(_availableStrategies.contains(_strategy), "V2Keep3rJob::update-required-amount:strategy-not-added");
        _setRequiredAmount(_strategy, _requiredAmount);
        emit StrategyModified(_strategy, _requiredAmount);
    }

    function updateCostTokenAndPair(
        address _strategy,
        address _costToken,
        address _costPair
    ) external override onlyGovernorOrMechanic {
        _updateCostTokenAndPair(_strategy, _costToken, _costPair);
    }

    function _updateCostTokenAndPair(
        address _strategy,
        address _costToken,
        address _costPair
    ) internal {
        require(_availableStrategies.contains(_strategy), "V2Keep3rJob::update-required-amount:strategy-not-added");
        _setCostTokenAndPair(_strategy, _costToken, _costPair);
    }

    function removeStrategy(address _strategy) external override onlyGovernorOrMechanic {
        require(_availableStrategies.contains(_strategy), "V2Keep3rJob::remove-strategy:strategy-not-added");
        delete requiredAmount[_strategy];
        _availableStrategies.remove(_strategy);
        emit StrategyRemoved(_strategy);
    }

    function _setRequiredAmount(address _strategy, uint256 _requiredAmount) internal {
        requiredAmount[_strategy] = _requiredAmount;
    }

    function _setCostTokenAndPair(
        address _strategy,
        address _costToken,
        address _costPair
    ) internal {
        costToken[_strategy] = _costToken;
        costPair[_strategy] = _costPair;
    }

    // Getters
    function strategies() public view override returns (address[] memory _strategies) {
        _strategies = new address[](_availableStrategies.length());
        for (uint256 i; i < _availableStrategies.length(); i++) {
            _strategies[i] = _availableStrategies.at(i);
        }
    }

    // Keeper view actions (internal)
    function _workable(address _strategy) internal view virtual returns (bool) {
        require(_availableStrategies.contains(_strategy), "V2Keep3rJob::workable:strategy-not-added");
        if (workCooldown == 0 || block.timestamp > lastWorkAt[_strategy] + workCooldown) return true;
        return false;
    }

    // Get eth costs
    function _getCallCosts(address _strategy) internal view returns (uint256 _callCost) {
        if (requiredAmount[_strategy] == 0) return 0;
        uint256 _ethCost = requiredAmount[_strategy] * uint256(IChainLinkFeed(fastGasOracle).latestAnswer());
        if (costToken[_strategy] == address(0)) return _ethCost;
        return IYOracle(yOracle).getAmountOut(costPair[_strategy], WETH, _ethCost, costToken[_strategy]);
    }

    // Keep3r actions
    function _workInternal(address _strategy) internal returns (uint256 _credits) {
        uint256 _initialGas = gasleft();
        require(_workable(_strategy), "V2Keep3rJob::work:not-workable");

        _work(_strategy);

        _credits = _calculateCredits(_initialGas);

        emit Worked(_strategy, msg.sender, _credits);
    }

    function _calculateCredits(uint256 _initialGas) internal view returns (uint256 _credits) {
        // Gets default credits from KP3R_Helper and applies job reward multiplier
        return (_getQuoteLimitFor(msg.sender, _initialGas) * rewardMultiplier) / PRECISION;
    }

    function _forceWork(address _strategy) internal {
        _work(_strategy);
        emit ForceWorked(_strategy);
    }

    function _work(address _strategy) internal virtual {}
}

// File: contracts/interfaces/jobs/v2/IV2Keep3rPublicJob.sol



// SPDX-License-Identifier: MIT
pragma solidity >=0.6.8;

interface IV2Keep3rPublicJob {}

// File: @openzeppelin/contracts/utils/structs/EnumerableSet.sol



// SPDX-License-Identifier: MIT

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.
 */
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) {
        return _values(set._inner);
    }

    // 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;

        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 on 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;

        assembly {
            result := store
        }

        return result;
    }
}

// File: @lbertenasco/contract-utils/contracts/abstract/MachineryReady.sol



// SPDX-License-Identifier: MIT

pragma solidity 0.8.4;

import './UtilsReady.sol';
import '../utils/Machinery.sol';

abstract
contract MachineryReady is UtilsReady, Machinery {

  constructor(address _mechanicsRegistry) Machinery(_mechanicsRegistry) UtilsReady() {
  }

  // Machinery: restricted-access
  function setMechanicsRegistry(address _mechanicsRegistry) external override onlyGovernor {
    _setMechanicsRegistry(_mechanicsRegistry);
  }

  // Machinery: modifiers
  modifier onlyGovernorOrMechanic() {
    require(isGovernor(msg.sender) || isMechanic(msg.sender), "Machinery::onlyGovernorOrMechanic:invalid-msg-sender");
    _;
  }

}

// File: @lbertenasco/contract-utils/interfaces/keep3r/IKeep3rV1Helper.sol



// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;

interface IKeep3rV1Helper {
    function quote(uint256 eth) external view returns (uint256);

    function getFastGas() external view returns (uint256);

    function bonds(address keeper) external view returns (uint256);

    function getQuoteLimit(uint256 gasUsed) external view returns (uint256);

    function getQuoteLimitFor(address origin, uint256 gasUsed) external view returns (uint256);
}

// File: @lbertenasco/contract-utils/contracts/keep3r/Keep3rAbstract.sol



// SPDX-License-Identifier: MIT

pragma solidity 0.8.4;

import '../../interfaces/keep3r/IKeep3rV1.sol';
import '../../interfaces/keep3r/IKeep3r.sol';

abstract
contract Keep3r is IKeep3r {

  IKeep3rV1 internal _Keep3r;
  address public override bond;
  uint256 public override minBond;
  uint256 public override earned;
  uint256 public override age;
  bool public override onlyEOA;

  constructor(address _keep3r) {
    _setKeep3r(_keep3r);
  }

  // Setters
  function _setKeep3r(address _keep3r) internal {
    _Keep3r = IKeep3rV1(_keep3r);
    emit Keep3rSet(_keep3r);
  }

  function _setKeep3rRequirements(address _bond, uint256 _minBond, uint256 _earned, uint256 _age, bool _onlyEOA) internal {
    bond = _bond;
    minBond = _minBond;
    earned = _earned;
    age = _age;
    onlyEOA = _onlyEOA;
    emit Keep3rRequirementsSet(_bond, _minBond, _earned, _age, _onlyEOA);
  }

  // Modifiers
  // Only checks if caller is a valid keeper, payment should be handled manually
  modifier onlyKeeper(address _keeper) {
    _isKeeper(_keeper);
    _;
  }

  // view
  function keep3r() external view override returns (address _keep3r) {
    return address(_Keep3r);
  }

  // handles default payment after execution
  modifier paysKeeper(address _keeper) {
    _;
    _paysKeeper(_keeper);
  }

  // Internal helpers
  function _isKeeper(address _keeper) internal {
    if (onlyEOA) require(_keeper == tx.origin, "keep3r::isKeeper:keeper-is-not-eoa");
    if (minBond == 0 && earned == 0 && age == 0) {
      // If no custom keeper requirements are set, just evaluate if sender is a registered keeper
      require(_Keep3r.isKeeper(_keeper), "keep3r::isKeeper:keeper-is-not-registered");
    } else {
      if (bond == address(0)) {
        // Checks for min KP3R, earned and age.
        require(_Keep3r.isMinKeeper(_keeper, minBond, earned, age), "keep3r::isKeeper:keeper-not-min-requirements");
      } else {
        // Checks for min custom-bond, earned and age.
        require(_Keep3r.isBondedKeeper(_keeper, bond, minBond, earned, age), "keep3r::isKeeper:keeper-not-custom-min-requirements");
      }
    }
  }

  function _getQuoteLimitFor(address _for, uint256 _initialGas) internal view returns (uint256 _credits) {
    return _Keep3r.KPRH().getQuoteLimitFor(_for, _initialGas - gasleft());
  }

  // pays in bonded KP3R after execution
  function _paysKeeper(address _keeper) internal {
    _Keep3r.worked(_keeper);
  }
  // pays _amount in KP3R after execution
  function _paysKeeperInTokens(address _keeper, uint256 _amount) internal {
    _Keep3r.receipt(address(_Keep3r), _keeper, _amount);
  }
  // pays _amount in bonded KP3R after execution
  function _paysKeeperAmount(address _keeper, uint256 _amount) internal {
    _Keep3r.workReceipt(_keeper, _amount);
  }
  // pays _amount in _credit after execution
  function _paysKeeperCredit(address _credit, address _keeper, uint256 _amount) internal {
    _Keep3r.receipt(_credit, _keeper, _amount);
  }
  // pays _amount in ETH after execution
  function _paysKeeperEth(address _keeper, uint256 _amount) internal {
    _Keep3r.receiptETH(_keeper, _amount);
  }
}

// File: contracts/interfaces/jobs/v2/IV2Keeper.sol



// SPDX-License-Identifier: MIT
pragma solidity >=0.6.8;

interface IV2Keeper {
    // Getters
    function jobs() external view returns (address[] memory);

    event JobAdded(address _job);
    event JobRemoved(address _job);

    // Setters
    function addJobs(address[] calldata _jobs) external;

    function addJob(address _job) external;

    function removeJob(address _job) external;

    // Jobs actions
    function tend(address _strategy) external;

    function harvest(address _strategy) external;
}

// File: contracts/interfaces/jobs/v2/IV2Keep3rJob.sol



// SPDX-License-Identifier: MIT
pragma solidity >=0.6.8;
import "../IKeep3rJob.sol";

interface IV2Keep3rJob is IKeep3rJob {
    // event Keep3rSet(address keep3r);
    event Keep3rHelperSet(address keep3rHelper);
    event SlidingOracleSet(address slidingOracle);

    // Setters
    event StrategyAdded(address _strategy, uint256 _requiredAmount);
    event StrategyModified(address _strategy, uint256 _requiredAmount);
    event StrategyRemoved(address _strategy);

    // Actions by Keeper
    event Worked(address _strategy, address _keeper, uint256 _credits);

    // Actions forced by governor
    event ForceWorked(address _strategy);

    // Getters
    function fastGasOracle() external view returns (address _fastGasOracle);

    function strategies() external view returns (address[] memory);

    function workable(address _strategy) external view returns (bool);

    // Setters
    function setV2Keep3r(address _v2Keeper) external;

    function setYOracle(address _v2Keeper) external;

    function setFastGasOracle(address _fastGasOracle) external;

    function setWorkCooldown(uint256 _workCooldown) external;

    function addStrategies(
        address[] calldata _strategy,
        uint256[] calldata _requiredAmount,
        address[] calldata _costTokens,
        address[] calldata _costPairs
    ) external;

    function addStrategy(
        address _strategy,
        uint256 _requiredAmount,
        address _costToken,
        address _costPair
    ) external;

    function updateRequiredAmounts(address[] calldata _strategies, uint256[] calldata _requiredAmounts) external;

    function updateRequiredAmount(address _strategy, uint256 _requiredAmount) external;

    function updateCostTokenAndPair(
        address _strategy,
        address _costToken,
        address _costPair
    ) external;

    function removeStrategy(address _strategy) external;

    // Keeper actions
    function work(address _strategy) external returns (uint256 _credits);

    // Mechanics keeper bypass
    function forceWork(address _strategy) external;
}

// File: contracts/interfaces/yearn/IBaseStrategy.sol



// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;

interface IBaseStrategy {
    function vault() external view returns (address _vault);

    function strategist() external view returns (address _strategist);

    function rewards() external view returns (address _rewards);

    function keeper() external view returns (address _keeper);

    function want() external view returns (address _want);

    function name() external view returns (string memory _name);

    function profitFactor() external view returns (uint256 _profitFactor);

    function maxReportDelay() external view returns (uint256 _maxReportDelay);

    // custom view
    function crv() external view returns (address _crv);

    // Setters
    function setStrategist(address _strategist) external;

    function setKeeper(address _keeper) external;

    function setRewards(address _rewards) external;

    function tendTrigger(uint256 callCost) external view returns (bool);

    function tend() external;

    function harvestTrigger(uint256 callCost) external view returns (bool);

    function harvest() external;

    function setBorrowCollateralizationRatio(uint256 _c) external;
}

// File: contracts/interfaces/oracle/IYOracle.sol



// SPDX-License-Identifier: MIT

pragma solidity 0.8.4;

interface IYOracle {
    function defaultOracle() external view returns (address _defaultOracle);

    function pairOracle(address _pair) external view returns (address _oracle);

    function setPairOracle(address _pair, address _oracle) external;

    function setDefaultOracle(address _oracle) external;

    function getAmountOut(
        address _pair,
        address _tokenIn,
        uint256 _amountIn,
        address _tokenOut
    ) external view returns (uint256 _amountOut);
}

// File: contracts/interfaces/keep3r/IChainLinkFeed.sol



// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;

interface IChainLinkFeed {
    function latestAnswer() external view returns (int256);
}

// File: @lbertenasco/contract-utils/contracts/abstract/UtilsReady.sol



// SPDX-License-Identifier: MIT

pragma solidity 0.8.4;

import '../utils/Governable.sol';
import '../utils/CollectableDust.sol';
import '../utils/Pausable.sol';

abstract
contract UtilsReady is Governable, CollectableDust, Pausable {

  constructor() Governable(msg.sender) { }

  // Governable: restricted-access
  function setPendingGovernor(address _pendingGovernor) external override onlyGovernor {
    _setPendingGovernor(_pendingGovernor);
  }

  function acceptGovernor() external override onlyPendingGovernor {
    _acceptGovernor();
  }

  // Collectable Dust: restricted-access
  function sendDust(
    address _to,
    address _token,
    uint256 _amount
  ) external override virtual onlyGovernor {
    _sendDust(_to, _token, _amount);
  }

  // Pausable: restricted-access
  function pause(bool _paused) external override onlyGovernor {
    _pause(_paused);
  }

}

// File: @lbertenasco/contract-utils/contracts/utils/Machinery.sol



// SPDX-License-Identifier: MIT

pragma solidity 0.8.4;

import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol";
import '../../interfaces/utils/IMachinery.sol';
import '../../interfaces/mechanics/IMechanicsRegistry.sol';

contract Machinery is IMachinery {
  using EnumerableSet for EnumerableSet.AddressSet;

  IMechanicsRegistry internal _mechanicsRegistry;

  constructor(address __mechanicsRegistry) {
    _setMechanicsRegistry(__mechanicsRegistry);
  }

  modifier onlyMechanic {
    require(_mechanicsRegistry.isMechanic(msg.sender), 'Machinery: not mechanic');
    _;
  }

  function setMechanicsRegistry(address __mechanicsRegistry) external virtual override {
    _setMechanicsRegistry(__mechanicsRegistry);
  }

  function _setMechanicsRegistry(address __mechanicsRegistry) internal {
    _mechanicsRegistry = IMechanicsRegistry(__mechanicsRegistry);
  }

  // View helpers
  function mechanicsRegistry() external view override returns (address _mechanicRegistry) {
    return address(_mechanicsRegistry);
  }

  function isMechanic(address _mechanic) public view override returns (bool _isMechanic) {
    return _mechanicsRegistry.isMechanic(_mechanic);
  }

}

// File: @lbertenasco/contract-utils/contracts/utils/Governable.sol



// SPDX-License-Identifier: MIT

pragma solidity 0.8.4;

import '../../interfaces/utils/IGovernable.sol';

contract Governable is IGovernable {
  address public override governor;
  address public override pendingGovernor;

  constructor(address _governor) {
    require(_governor != address(0), 'governable/governor-should-not-be-zero-address');
    governor = _governor;
  }

  function setPendingGovernor(address _pendingGovernor) external virtual override onlyGovernor {
    _setPendingGovernor(_pendingGovernor);
  }

  function acceptGovernor() external virtual override onlyPendingGovernor {
    _acceptGovernor();
  }

  function _setPendingGovernor(address _pendingGovernor) internal {
    require(_pendingGovernor != address(0), 'governable/pending-governor-should-not-be-zero-addres');
    pendingGovernor = _pendingGovernor;
    emit PendingGovernorSet(_pendingGovernor);
  }

  function _acceptGovernor() internal {
    governor = pendingGovernor;
    pendingGovernor = address(0);
    emit GovernorAccepted();
  }

  function isGovernor(address _account) public view override returns (bool _isGovernor) {
    return _account == governor;
  }

  modifier onlyGovernor {
    require(isGovernor(msg.sender), 'governable/only-governor');
    _;
  }

  modifier onlyPendingGovernor {
    require(msg.sender == pendingGovernor, 'governable/only-pending-governor');
    _;
  }
}

// File: @lbertenasco/contract-utils/contracts/utils/CollectableDust.sol




// SPDX-License-Identifier: MIT

pragma solidity 0.8.4;

import '@openzeppelin/contracts/utils/structs/EnumerableSet.sol';
import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

import '../../interfaces/utils/ICollectableDust.sol';

abstract
contract CollectableDust is ICollectableDust {
  using SafeERC20 for IERC20;
  using EnumerableSet for EnumerableSet.AddressSet;

  address public constant ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
  EnumerableSet.AddressSet internal protocolTokens;

  constructor() {}

  function _addProtocolToken(address _token) internal {
    require(!protocolTokens.contains(_token), 'collectable-dust/token-is-part-of-the-protocol');
    protocolTokens.add(_token);
  }

  function _removeProtocolToken(address _token) internal {
    require(protocolTokens.contains(_token), 'collectable-dust/token-not-part-of-the-protocol');
    protocolTokens.remove(_token);
  }

  function _sendDust(
    address _to,
    address _token,
    uint256 _amount
  ) internal {
    require(_to != address(0), 'collectable-dust/cant-send-dust-to-zero-address');
    require(!protocolTokens.contains(_token), 'collectable-dust/token-is-part-of-the-protocol');
    if (_token == ETH_ADDRESS) {
      payable(_to).transfer(_amount);
    } else {
      IERC20(_token).safeTransfer(_to, _amount);
    }
    emit DustSent(_to, _token, _amount);
  }
}

// File: @lbertenasco/contract-utils/contracts/utils/Pausable.sol




// SPDX-License-Identifier: MIT

pragma solidity 0.8.4;

import '../../interfaces/utils/IPausable.sol';

abstract
contract Pausable is IPausable {
  bool public paused;

  constructor() {}
  
  modifier notPaused() {
    require(!paused, 'paused');
    _;
  }

  function _pause(bool _paused) internal {
    require(paused != _paused, 'no-change');
    paused = _paused;
    emit Paused(_paused);
  }

}

// File: @lbertenasco/contract-utils/interfaces/utils/IGovernable.sol



// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;

interface IGovernable {
  event PendingGovernorSet(address pendingGovernor);
  event GovernorAccepted();

  function setPendingGovernor(address _pendingGovernor) external;
  function acceptGovernor() external;

  function governor() external view returns (address _governor);
  function pendingGovernor() external view returns (address _pendingGovernor);

  function isGovernor(address _account) external view returns (bool _isGovernor);
}

// File: @openzeppelin/contracts/token/ERC20/IERC20.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @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);
}

// File: @openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../../../utils/Address.sol";

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

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

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

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

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

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

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

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

// File: @lbertenasco/contract-utils/interfaces/utils/ICollectableDust.sol



// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;

interface ICollectableDust {
  event DustSent(address _to, address token, uint256 amount);

  function sendDust(address _to, address _token, uint256 _amount) external;
}

// File: @openzeppelin/contracts/utils/Address.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @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
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 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 functionCall(target, data, "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");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason 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 {
            // 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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// File: @lbertenasco/contract-utils/interfaces/utils/IPausable.sol



// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;

interface IPausable {
  event Paused(bool _paused);

  function pause(bool _paused) external;
}

// File: @lbertenasco/contract-utils/interfaces/utils/IMachinery.sol



// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;

interface IMachinery {
    // View helpers
    function mechanicsRegistry() external view returns (address _mechanicsRegistry);
    function isMechanic(address mechanic) external view returns (bool _isMechanic);

    // Setters
    function setMechanicsRegistry(address _mechanicsRegistry) external;

}

// File: @lbertenasco/contract-utils/interfaces/mechanics/IMechanicsRegistry.sol



// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;

interface IMechanicsRegistry {
    event MechanicAdded(address _mechanic);
    event MechanicRemoved(address _mechanic);

    function addMechanic(address _mechanic) external;

    function removeMechanic(address _mechanic) external;

    function mechanics() external view returns (address[] memory _mechanicsList);

    function isMechanic(address mechanic) external view returns (bool _isMechanic);

}

// File: @lbertenasco/contract-utils/interfaces/keep3r/IKeep3rV1.sol



// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "./IKeep3rV1Helper.sol";

interface IKeep3rV1 is IERC20 {
    function name() external returns (string memory);
    function KPRH() external view returns (IKeep3rV1Helper);

    function isKeeper(address _keeper) external returns (bool);
    function isMinKeeper(address _keeper, uint256 _minBond, uint256 _earned, uint256 _age) external returns (bool);
    function isBondedKeeper(address _keeper, address _bond, uint256 _minBond, uint256 _earned, uint256 _age) external returns (bool);
    function addKPRCredit(address _job, uint256 _amount) external;
    function addJob(address _job) external;
    function removeJob(address _job) external;
    function addVotes(address voter, uint256 amount) external;
    function removeVotes(address voter, uint256 amount) external;
    function revoke(address keeper) external;

    function worked(address _keeper) external;
    function workReceipt(address _keeper, uint256 _amount) external;
    function receipt(address credit, address _keeper, uint256 _amount) external;
    function receiptETH(address _keeper, uint256 _amount) external;

    function addLiquidityToJob(address liquidity, address job, uint amount) external;
    function applyCreditToJob(address provider, address liquidity, address job) external;
    function unbondLiquidityFromJob(address liquidity, address job, uint amount) external;
    function removeLiquidityFromJob(address liquidity, address job) external;

    function jobs(address _job) external view returns (bool);
    function jobList(uint256 _index) external view returns (address _job);
    function credits(address _job, address _credit) external view returns (uint256 _amount);

    function liquidityAccepted(address _liquidity) external view returns (bool);

    function liquidityProvided(address _provider, address _liquidity, address _job) external view returns (uint256 _amount);
    function liquidityApplied(address _provider, address _liquidity, address _job) external view returns (uint256 _amount);
    function liquidityAmount(address _provider, address _liquidity, address _job) external view returns (uint256 _amount);
    
    function liquidityUnbonding(address _provider, address _liquidity, address _job) external view returns (uint256 _amount);
    function liquidityAmountsUnbonding(address _provider, address _liquidity, address _job) external view returns (uint256 _amount);

    function bond(address bonding, uint256 amount) external;
    function activate(address bonding) external;
    function unbond(address bonding, uint256 amount) external;
    function withdraw(address bonding) external;
}

// File: @lbertenasco/contract-utils/interfaces/keep3r/IKeep3r.sol



// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;
interface IKeep3r {
    event Keep3rSet(address _keep3r);
    event Keep3rRequirementsSet(address _bond, uint256 _minBond, uint256 _earned, uint256 _age, bool _onlyEOA);
    
    function keep3r() external view returns (address _keep3r);
    function bond() external view returns (address _bond);
    function minBond() external view returns (uint256 _minBond);
    function earned() external view returns (uint256 _earned);
    function age() external view returns (uint256 _age);
    function onlyEOA() external view returns (bool _onlyEOA);

    function setKeep3r(address _keep3r) external;
    function setKeep3rRequirements(address _bond, uint256 _minBond, uint256 _earned, uint256 _age, bool _onlyEOA) external;
}

// File: contracts/interfaces/jobs/IKeep3rJob.sol



// SPDX-License-Identifier: MIT
pragma solidity 0.8.4;

interface IKeep3rJob {
    event SetRewardMultiplier(uint256 _rewardMultiplier);

    function rewardMultiplier() external view returns (uint256 _rewardMultiplier);

    function setRewardMultiplier(uint256 _rewardMultiplier) external;
}