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// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.26;

import {IERC20} from "@openzeppelin-contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin-contracts/token/ERC20/utils/SafeERC20.sol";

import {InstructionLib} from "../libraries/Instruction.sol";

import {OtimFee} from "./fee-models/OtimFee.sol";

import {IAction} from "./interfaces/IAction.sol";
import {IRefuelERC20Action, INSTRUCTION_TYPEHASH, ARGUMENTS_TYPEHASH} from "./interfaces/IRefuelERC20Action.sol";

import {InvalidArguments, InsufficientBalance, BalanceOverThreshold} from "./errors/Errors.sol";

/// @title RefuelERC20
/// @author Otim Labs, Inc.
/// @notice an Action that refuels a target address with an ERC20 token when the target's balance is below a threshold
contract RefuelERC20Action is IAction, IRefuelERC20Action, OtimFee {
    using SafeERC20 for IERC20;

    constructor(address feeTokenRegistryAddress, address treasuryAddress, uint256 gasConstant_)
        OtimFee(feeTokenRegistryAddress, treasuryAddress, gasConstant_)
    {}

    /// @inheritdoc IAction
    function argumentsHash(bytes calldata arguments) public pure returns (bytes32, bytes32) {
        return (INSTRUCTION_TYPEHASH, hash(abi.decode(arguments, (RefuelERC20))));
    }

    /// @inheritdoc IRefuelERC20Action
    function hash(RefuelERC20 memory refuelERC20) public pure returns (bytes32) {
        return keccak256(
            abi.encode(
                ARGUMENTS_TYPEHASH,
                refuelERC20.token,
                refuelERC20.target,
                refuelERC20.threshold,
                refuelERC20.endBalance,
                hash(refuelERC20.fee)
            )
        );
    }

    /// @inheritdoc IAction
    function execute(
        InstructionLib.Instruction calldata instruction,
        InstructionLib.Signature calldata,
        InstructionLib.ExecutionState calldata executionState
    ) external override returns (bool) {
        // initial gas measurement for fee calculation
        uint256 startGas = gasleft();

        // decode the arguments from the instruction
        RefuelERC20 memory refuelERC20 = abi.decode(instruction.arguments, (RefuelERC20));

        // if first execution, validate the input
        if (executionState.executionCount == 0) {
            // validate the arguments
            if (
                refuelERC20.token == address(0) || refuelERC20.target == address(0)
                    || refuelERC20.threshold >= refuelERC20.endBalance
            ) {
                revert InvalidArguments();
            }
        }

        IERC20 refuelToken = IERC20(refuelERC20.token);

        // get the target's ERC20 balance
        uint256 balance = refuelToken.balanceOf(refuelERC20.target);

        // if the balance is above the threshold, revert
        if (balance > refuelERC20.threshold) {
            revert BalanceOverThreshold();
        }

        // calculate the amount to refuel
        uint256 refuelAmount = refuelERC20.endBalance - balance;

        // check if the account has enough balance to refuel
        if (refuelToken.balanceOf(address(this)) < refuelAmount) {
            revert InsufficientBalance();
        }

        // transfer the refuel amount to the target
        refuelToken.safeTransfer(refuelERC20.target, refuelAmount);

        // charge the fee
        chargeFee(startGas - gasleft(), refuelERC20.fee);

        // this action has no auto-deactivation cases
        return false;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/IERC20.sol)

pragma solidity >=0.4.16;

/**
 * @dev Interface of the ERC-20 standard as defined in the ERC.
 */
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 value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` 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 value) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC1363} from "../../../interfaces/IERC1363.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC-20 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 {
    /**
     * @dev An operation with an ERC-20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Variant of {safeTransfer} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransfer(IERC20 token, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Variant of {safeTransferFrom} that returns a bool instead of reverting if the operation is not successful.
     */
    function trySafeTransferFrom(IERC20 token, address from, address to, uint256 value) internal returns (bool) {
        return _callOptionalReturnBool(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     *
     * IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
     * smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
     * this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
     * that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     *
     * NOTE: If the token implements ERC-7674, this function will not modify any temporary allowance. This function
     * only sets the "standard" allowance. Any temporary allowance will remain active, in addition to the value being
     * set here.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            safeTransfer(token, to, value);
        } else if (!token.transferAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target
     * has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * Reverts if the returned value is other than `true`.
     */
    function transferFromAndCallRelaxed(
        IERC1363 token,
        address from,
        address to,
        uint256 value,
        bytes memory data
    ) internal {
        if (to.code.length == 0) {
            safeTransferFrom(token, from, to, value);
        } else if (!token.transferFromAndCall(from, to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no
     * code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
     * targeting contracts.
     *
     * NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}.
     * Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall}
     * once without retrying, and relies on the returned value to be true.
     *
     * Reverts if the returned value is other than `true`.
     */
    function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
        if (to.code.length == 0) {
            forceApprove(token, to, value);
        } else if (!token.approveAndCall(to, value, data)) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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).
     *
     * This is a variant of {_callOptionalReturnBool} that reverts if call fails to meet the requirements.
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            let success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            // bubble errors
            if iszero(success) {
                let ptr := mload(0x40)
                returndatacopy(ptr, 0, returndatasize())
                revert(ptr, returndatasize())
            }
            returnSize := returndatasize()
            returnValue := mload(0)
        }

        if (returnSize == 0 ? address(token).code.length == 0 : returnValue != 1) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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).
     *
     * This is a variant of {_callOptionalReturn} that silently catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        bool success;
        uint256 returnSize;
        uint256 returnValue;
        assembly ("memory-safe") {
            success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
            returnSize := returndatasize()
            returnValue := mload(0)
        }
        return success && (returnSize == 0 ? address(token).code.length > 0 : returnValue == 1);
    }
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.26;

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

/// @title InstructionLib
/// @author Otim Labs, Inc.
/// @notice a library defining the Instruction datatype and util functions
library InstructionLib {
    /// @notice defines a signature
    struct Signature {
        uint8 v;
        bytes32 r;
        bytes32 s;
    }

    /// @notice defines the ExecutionState datatype
    /// @param deactivated - whether the Instruction has been deactivated
    /// @param executionCount - the number of times the Instruction has been executed
    /// @param lastExecuted - the unix timestamp of the last time the Instruction was executed
    struct ExecutionState {
        bool deactivated;
        uint120 executionCount;
        uint120 lastExecuted;
    }

    /// @notice defines the Instruction datatype
    /// @param salt - a number to ensure the uniqueness of the Instruction
    /// @param maxExecutions - the maximum number of times the Instruction can be executed
    /// @param action - the address of the Action contract to be executed
    /// @param arguments - the arguments to be passed to the Action contract
    struct Instruction {
        uint256 salt;
        uint256 maxExecutions;
        address action;
        bytes arguments;
    }

    /// @notice abi.encodes and hashes an Instruction struct to create a unique Instruction identifier
    /// @param instruction - an Instruction struct to hash
    /// @return instructionId - unique identifier for the Instruction
    function id(Instruction calldata instruction) internal pure returns (bytes32) {
        return keccak256(abi.encode(instruction));
    }

    /// @notice calculates the EIP-712 hash for activating an Instruction
    /// @param instruction - an Instruction struct to hash
    /// @param domainSeparator - the EIP-712 domain separator for the verifying contract
    /// @return hash - EIP-712 hash for activating `instruction`
    function signingHash(
        Instruction calldata instruction,
        bytes32 domainSeparator,
        bytes32 instructionTypeHash,
        bytes32 argumentsHash
    ) internal pure returns (bytes32) {
        return keccak256(
            abi.encodePacked(
                Constants.EIP712_PREFIX,
                domainSeparator,
                keccak256(
                    abi.encode(
                        instructionTypeHash,
                        instruction.salt,
                        instruction.maxExecutions,
                        instruction.action,
                        argumentsHash
                    )
                )
            )
        );
    }

    /// @notice defines a deactivation instruction
    /// @param instructionId - the unique identifier of the Instruction to deactivate
    struct InstructionDeactivation {
        bytes32 instructionId;
    }

    /// @notice the EIP-712 type-hash for an InstructionDeactivation
    bytes32 public constant DEACTIVATION_TYPEHASH = keccak256("InstructionDeactivation(bytes32 instructionId)");

    /// @notice calculates the EIP-712 hash for a InstructionDeactivation
    /// @param deactivation - an InstructionDeactivation struct to hash
    /// @param domainSeparator - the EIP-712 domain separator for the verifying contract
    /// @return hash - EIP-712 hash for the `deactivation`
    function signingHash(InstructionDeactivation calldata deactivation, bytes32 domainSeparator)
        internal
        pure
        returns (bytes32)
    {
        return keccak256(
            abi.encodePacked(
                Constants.EIP712_PREFIX,
                domainSeparator,
                keccak256(abi.encode(DEACTIVATION_TYPEHASH, deactivation.instructionId))
            )
        );
    }
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.26;

import {IERC20} from "@openzeppelin-contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin-contracts/token/ERC20/utils/SafeERC20.sol";

import {IFeeTokenRegistry} from "../../infrastructure/interfaces/IFeeTokenRegistry.sol";
import {ITreasury} from "../../infrastructure/interfaces/ITreasury.sol";

import {IOtimFee, FEE_TYPEHASH} from "./interfaces/IOtimFee.sol";

/// @title OtimFee
/// @author Otim Labs, Inc.
/// @notice abstract contract for the Otim centralized fee model
abstract contract OtimFee is IOtimFee {
    using SafeERC20 for IERC20;

    /// @notice the Otim fee token registry contract for converting wei to ERC20 tokens
    IFeeTokenRegistry public immutable feeTokenRegistry;
    /// @notice the Otim treasury contract that receives fees
    ITreasury public immutable treasury;
    /// @notice the gas constant used to calculate the fee
    uint256 public immutable gasConstant;

    constructor(address feeTokenRegistryAddress, address treasuryAddress, uint256 gasConstant_) {
        feeTokenRegistry = IFeeTokenRegistry(feeTokenRegistryAddress);
        treasury = ITreasury(treasuryAddress);
        gasConstant = gasConstant_;
    }

    /// @inheritdoc IOtimFee
    function hash(Fee memory fee) public pure returns (bytes32) {
        return keccak256(
            abi.encode(FEE_TYPEHASH, fee.token, fee.maxBaseFeePerGas, fee.maxPriorityFeePerGas, fee.executionFee)
        );
    }

    /// @inheritdoc IOtimFee
    function chargeFee(uint256 gasUsed, Fee memory fee) public override {
        // fee.executionFee == 0 is a magic value signifying a sponsored Instruction
        if (fee.executionFee == 0) return;

        // check if the base fee is too high
        if (block.basefee > fee.maxBaseFeePerGas && fee.maxBaseFeePerGas != 0) {
            revert BaseFeePerGasTooHigh();
        }

        // check if the priority fee is too high
        if (tx.gasprice - block.basefee > fee.maxPriorityFeePerGas) {
            revert PriorityFeePerGasTooHigh();
        }

        // calculate the total cost of the gas used in the transaction
        uint256 weiGasCost = (gasUsed + gasConstant) * tx.gasprice;

        // if fee.token is address(0), the fee is paid in native currency
        if (fee.token == address(0)) {
            // calculate the fee cost based on the gas used and the additional fee
            uint256 weiTotalCost = weiGasCost + fee.executionFee;

            // check if the user has enough balance to pay the fee
            if (address(this).balance < weiTotalCost) {
                revert InsufficientFeeBalance();
            }

            // transfer to the treasury contract
            // slither-disable-next-line arbitrary-send-eth
            treasury.deposit{value: weiTotalCost}();
        } else {
            // calculate the fee cost based on the cost of the gas used (denominated in the fee token) and the execution fee
            uint256 tokenTotalCost = feeTokenRegistry.weiToToken(fee.token, weiGasCost) + fee.executionFee;

            // check if the user has enough balance to pay the fee
            if (IERC20(fee.token).balanceOf(address(this)) < tokenTotalCost) {
                revert InsufficientFeeBalance();
            }

            // transfer to the treasury contract
            IERC20(fee.token).safeTransfer(address(treasury), tokenTotalCost);
        }
    }
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.26;

import {InstructionLib} from "../../libraries/Instruction.sol";

/// @title IAction
/// @author Otim Labs, Inc.
/// @notice interface for Action contracts
interface IAction {
    /// @notice returns the EIP-712 type hash for the Action-specific Instruction and the EIP-712 hash of the Action-specific Instruction arguments
    /// @param arguments - encoded Instruction arguments
    /// @return instructionTypeHash - EIP-712 type hash for the Action-specific Instruction
    /// @return argumentsTypeHash - EIP-712 hash of the Action-specific Instruction arguments
    function argumentsHash(bytes calldata arguments) external returns (bytes32, bytes32);

    /// @notice execute Action logic with Instruction arguments
    /// @param instruction - Instruction
    /// @param signature - Signature over the Instruction signing hash
    /// @param executionState - ExecutionState
    /// @return deactivate - whether the Instruction should be automatically deactivated
    function execute(
        InstructionLib.Instruction calldata instruction,
        InstructionLib.Signature calldata signature,
        InstructionLib.ExecutionState calldata executionState
    ) external returns (bool);
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.26;

import {IOtimFee} from "../fee-models/interfaces/IOtimFee.sol";

bytes32 constant INSTRUCTION_TYPEHASH = keccak256(
    "Instruction(uint256 salt,uint256 maxExecutions,address action,RefuelERC20 refuelERC20)Fee(address token,uint256 maxBaseFeePerGas,uint256 maxPriorityFeePerGas,uint256 executionFee)RefuelERC20(address token,address target,uint256 threshold,uint256 endBalance,Fee fee)"
);

bytes32 constant ARGUMENTS_TYPEHASH = keccak256(
    "RefuelERC20(address token,address target,uint256 threshold,uint256 endBalance,Fee fee)Fee(address token,uint256 maxBaseFeePerGas,uint256 maxPriorityFeePerGas,uint256 executionFee)"
);

/// @title IRefuelERC20Action
/// @author Otim Labs, Inc.
/// @notice interface for RefuelERC20Action contract
interface IRefuelERC20Action is IOtimFee {
    /// @notice arguments for the RefuelERC20Action contract
    /// @param token - the address of the ERC20 token to refuel with
    /// @param target - the address to refuel
    /// @param threshold - the minimum balance required to refuel
    /// @param endBalance - the target balance after refueling
    /// @param fee - the fee Otim will charge for the refuel
    struct RefuelERC20 {
        address token;
        address target;
        uint256 threshold;
        uint256 endBalance;
        Fee fee;
    }

    /// @notice calculates the EIP-712 hash of the RefuelERC20 struct
    function hash(RefuelERC20 memory refuelERC20) external pure returns (bytes32);
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.26;

error InvalidArguments();

error InsufficientBalance();

error BalanceOverThreshold();
error BalanceUnderThreshold();

error UniswapV3PoolDoesNotExist();

error InstructionAlreadyDeactivated();

error CallOnceFailed(address target, bytes4 selector, bytes result);

error CCTPTokenNotSupported();

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC1363.sol)

pragma solidity >=0.6.2;

import {IERC20} from "./IERC20.sol";
import {IERC165} from "./IERC165.sol";

/**
 * @title IERC1363
 * @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363].
 *
 * Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract
 * after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction.
 */
interface IERC1363 is IERC20, IERC165 {
    /*
     * Note: the ERC-165 identifier for this interface is 0xb0202a11.
     * 0xb0202a11 ===
     *   bytes4(keccak256('transferAndCall(address,uint256)')) ^
     *   bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^
     *   bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256)')) ^
     *   bytes4(keccak256('approveAndCall(address,uint256,bytes)'))
     */

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
     * and then calls {IERC1363Receiver-onTransferReceived} on `to`.
     * @param from The address which you want to send tokens from.
     * @param to The address which you want to transfer to.
     * @param value The amount of tokens to be transferred.
     * @param data Additional data with no specified format, sent in call to `to`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value) external returns (bool);

    /**
     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
     * caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
     * @param spender The address which will spend the funds.
     * @param value The amount of tokens to be spent.
     * @param data Additional data with no specified format, sent in call to `spender`.
     * @return A boolean value indicating whether the operation succeeded unless throwing.
     */
    function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.26;

/// @title Constants
/// @author Otim Labs, Inc.
/// @notice a library defining constants used throughout the protocol
library Constants {
    /// @notice the EIP-712 signature prefix
    bytes2 public constant EIP712_PREFIX = 0x1901;

    /// @notice the EIP-7702 delegation designator prefix
    bytes3 public constant EIP7702_PREFIX = 0xef0100;
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.26;

/// @title FeeTokenRegistry
/// @author Otim Labs, Inc.
/// @notice interface for the FeeTokenRegistry contract
interface IFeeTokenRegistry {
    /// @notice fee token data struct
    /// @param priceFeed - a price feed of the form <token>/ETH
    /// @param heartbeat - the time in seconds between price feed updates
    /// @param priceFeedDecimals - the number of decimals for the price feed
    /// @param tokenDecimals - the number of decimals for the token
    /// @param registered - whether the token is registered
    struct FeeTokenData {
        address priceFeed;
        uint40 heartbeat;
        uint8 priceFeedDecimals;
        uint8 tokenDecimals;
        bool registered;
    }

    /// @notice emitted when a fee token is added
    event FeeTokenAdded(
        address indexed token, address indexed priceFeed, uint40 heartbeat, uint8 priceFeedDecimals, uint8 tokenDecimals
    );
    /// @notice emitted when a fee token is removed
    event FeeTokenRemoved(
        address indexed token, address indexed priceFeed, uint40 heartbeat, uint8 priceFeedDecimals, uint8 tokenDecimals
    );

    error InvalidFeeTokenData();
    error PriceFeedNotInitialized();
    error FeeTokenAlreadyRegistered();
    error FeeTokenNotRegistered();
    error InvalidPrice();
    error StalePrice();

    /// @notice adds a fee token to the registry
    /// @param token - the ERC20 token address
    /// @param priceFeed - the price feed address
    /// @param heartbeat - the time in seconds between price feed updates
    function addFeeToken(address token, address priceFeed, uint40 heartbeat) external;

    /// @notice removes a fee token from the registry
    /// @param token - the ERC20 token address
    function removeFeeToken(address token) external;

    /// @notice converts a wei amount to a token amount
    /// @param token - the ERC20 token address to convert to
    /// @param weiAmount - the amount of wei to convert
    /// @return tokenAmount - converted token amount
    function weiToToken(address token, uint256 weiAmount) external view returns (uint256);
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.26;

/// @title ITreasury
/// @author Otim Labs, Inc.
/// @notice interface for Treasury contract
interface ITreasury {
    /// @notice thrown when the owner tries to withdraw to the zero address
    error InvalidTarget();
    /// @notice thrown when the withdrawl fails
    error WithdrawalFailed(bytes result);
    /// @notice thrown when the owner tries to withdraw more than the contract balance
    error InsufficientBalance();

    /// @notice deposit ether into the treasury
    function deposit() external payable;

    /// @notice withdraw ether from the treasury
    /// @param to - the address to withdraw to
    /// @param value - the amount to withdraw
    function withdraw(address to, uint256 value) external;

    /// @notice withdraw ERC20 tokens from the treasury
    /// @param token - the ERC20 token to withdraw
    /// @param to - the address to withdraw to
    /// @param value - the amount to withdraw
    function withdrawERC20(address token, address to, uint256 value) external;
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity ^0.8.26;

bytes32 constant FEE_TYPEHASH =
    keccak256("Fee(address token,uint256 maxBaseFeePerGas,uint256 maxPriorityFeePerGas,uint256 executionFee)");

/// @title IOtimFee
/// @author Otim Labs, Inc.
/// @notice interface for the OtimFee contract
interface IOtimFee {
    /// @notice fee struct
    /// @param token - the token to be used for the fee (address(0) for native currency)
    /// @param maxBaseFeePerGas - the maximum basefee per gas the user is willing to pay
    /// @param maxPriorityFeePerGas - the maximum priority fee per gas the user is willing to pay
    /// @param executionFee - fixed fee to be paid for each execution
    struct Fee {
        address token;
        uint256 maxBaseFeePerGas;
        uint256 maxPriorityFeePerGas;
        uint256 executionFee;
    }

    /// @notice calculates the EIP-712 hash of the Fee struct
    function hash(Fee memory fee) external pure returns (bytes32);

    /// @notice charges a fee for the Instruction execution
    /// @param gasUsed - amount of gas used during the Instruction execution
    /// @param fee - additional fee to be paid
    function chargeFee(uint256 gasUsed, Fee memory fee) external;

    error InsufficientFeeBalance();
    error BaseFeePerGasTooHigh();
    error PriorityFeePerGasTooHigh();
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC20.sol)

pragma solidity >=0.4.16;

import {IERC20} from "../token/ERC20/IERC20.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (interfaces/IERC165.sol)

pragma solidity >=0.4.16;

import {IERC165} from "../utils/introspection/IERC165.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (utils/introspection/IERC165.sol)

pragma solidity >=0.4.16;

/**
 * @dev Interface of the ERC-165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[ERC].
 *
 * 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[ERC section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

{
  "remappings": [
    "@chainlink-contracts/=dependencies/smartcontractkit-chainlink-2.25.0/contracts/",
    "@openzeppelin-contracts/=dependencies/@openzeppelin-contracts-5.4.0/",
    "@openzeppelin/contracts/=dependencies/@openzeppelin-contracts-5.4.0/",
    "@uniswap-universal-router/=dependencies/@uniswap-universal-router-2.0.0/",
    "@uniswap-v3-core/=dependencies/@uniswap-v3-core-1.0.2-solc-0.8-simulate/",
    "@uniswap-v3-periphery/=dependencies/@uniswap-v3-periphery-1.4.4/",
    "forge-std/=dependencies/forge-std-1.10.0/",
    "@openzeppelin-contracts-5.4.0/=dependencies/@openzeppelin-contracts-5.4.0/",
    "@uniswap-universal-router-2.0.0/=dependencies/@uniswap-universal-router-2.0.0/",
    "@uniswap-v3-core-1.0.2-solc-0.8-simulate/=dependencies/@uniswap-v3-core-1.0.2-solc-0.8-simulate/contracts/",
    "@uniswap-v3-periphery-1.4.4/=dependencies/@uniswap-v3-periphery-1.4.4/contracts/",
    "@uniswap/=dependencies/@uniswap-v3-periphery-1.4.4/node_modules/@uniswap/",
    "ds-test/=dependencies/@uniswap-universal-router-2.0.0/lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=dependencies/@uniswap-universal-router-2.0.0/lib/v4-periphery/lib/v4-core/lib/openzeppelin-contracts/lib/erc4626-tests/",
    "forge-gas-snapshot/=dependencies/@uniswap-universal-router-2.0.0/lib/permit2/lib/forge-gas-snapshot/src/",
    "forge-std-1.10.0/=dependencies/forge-std-1.10.0/src/",
    "openzeppelin-contracts/=dependencies/@uniswap-universal-router-2.0.0/lib/permit2/lib/openzeppelin-contracts/",
    "permit2/=dependencies/@uniswap-universal-router-2.0.0/lib/permit2/",
    "smartcontractkit-chainlink-2.25.0/=dependencies/smartcontractkit-chainlink-2.25.0/",
    "solmate/=dependencies/@uniswap-universal-router-2.0.0/lib/solmate/src/",
    "v3-periphery/=dependencies/@uniswap-universal-router-2.0.0/lib/v3-periphery/contracts/",
    "v4-core/=dependencies/@uniswap-universal-router-2.0.0/lib/v4-periphery/lib/v4-core/src/",
    "v4-periphery/=dependencies/@uniswap-universal-router-2.0.0/lib/v4-periphery/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "none",
    "appendCBOR": false
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "cancun",
  "viaIR": false
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"feeTokenRegistryAddress","type":"address"},{"internalType":"address","name":"treasuryAddress","type":"address"},{"internalType":"uint256","name":"gasConstant_","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"BalanceOverThreshold","type":"error"},{"inputs":[],"name":"BaseFeePerGasTooHigh","type":"error"},{"inputs":[],"name":"InsufficientBalance","type":"error"},{"inputs":[],"name":"InsufficientFeeBalance","type":"error"},{"inputs":[],"name":"InvalidArguments","type":"error"},{"inputs":[],"name":"PriorityFeePerGasTooHigh","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"inputs":[{"internalType":"bytes","name":"arguments","type":"bytes"}],"name":"argumentsHash","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"},{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"gasUsed","type":"uint256"},{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"maxBaseFeePerGas","type":"uint256"},{"internalType":"uint256","name":"maxPriorityFeePerGas","type":"uint256"},{"internalType":"uint256","name":"executionFee","type":"uint256"}],"internalType":"struct IOtimFee.Fee","name":"fee","type":"tuple"}],"name":"chargeFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"uint256","name":"salt","type":"uint256"},{"internalType":"uint256","name":"maxExecutions","type":"uint256"},{"internalType":"address","name":"action","type":"address"},{"internalType":"bytes","name":"arguments","type":"bytes"}],"internalType":"struct InstructionLib.Instruction","name":"instruction","type":"tuple"},{"components":[{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"internalType":"struct InstructionLib.Signature","name":"","type":"tuple"},{"components":[{"internalType":"bool","name":"deactivated","type":"bool"},{"internalType":"uint120","name":"executionCount","type":"uint120"},{"internalType":"uint120","name":"lastExecuted","type":"uint120"}],"internalType":"struct InstructionLib.ExecutionState","name":"executionState","type":"tuple"}],"name":"execute","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"feeTokenRegistry","outputs":[{"internalType":"contract IFeeTokenRegistry","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"gasConstant","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"address","name":"target","type":"address"},{"internalType":"uint256","name":"threshold","type":"uint256"},{"internalType":"uint256","name":"endBalance","type":"uint256"},{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"maxBaseFeePerGas","type":"uint256"},{"internalType":"uint256","name":"maxPriorityFeePerGas","type":"uint256"},{"internalType":"uint256","name":"executionFee","type":"uint256"}],"internalType":"struct IOtimFee.Fee","name":"fee","type":"tuple"}],"internalType":"struct IRefuelERC20Action.RefuelERC20","name":"refuelERC20","type":"tuple"}],"name":"hash","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"pure","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"maxBaseFeePerGas","type":"uint256"},{"internalType":"uint256","name":"maxPriorityFeePerGas","type":"uint256"},{"internalType":"uint256","name":"executionFee","type":"uint256"}],"internalType":"struct IOtimFee.Fee","name":"fee","type":"tuple"}],"name":"hash","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"treasury","outputs":[{"internalType":"contract ITreasury","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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000000000000000000000000a972a2c093456c7298c3527fc87de41f89a2ebae0000000000000000000000001fddc4eeec10e3317b27563ad0126285a329350d0000000000000000000000000000000000000000000000000000000000019834

-----Decoded View---------------
Arg [0] : feeTokenRegistryAddress (address): 0xa972A2C093456c7298C3527fc87DE41F89A2eBaE
Arg [1] : treasuryAddress (address): 0x1FDdC4EEEc10E3317B27563Ad0126285A329350d
Arg [2] : gasConstant_ (uint256): 104500

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000a972a2c093456c7298c3527fc87de41f89a2ebae
Arg [1] : 0000000000000000000000001fddc4eeec10e3317b27563ad0126285a329350d
Arg [2] : 0000000000000000000000000000000000000000000000000000000000019834