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// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.17;

import {ERC20} from "solmate/tokens/ERC20.sol";
import {IOracle} from "splits-oracle/interfaces/IOracle.sol";
import {ISwapRouter} from "v3-periphery/interfaces/ISwapRouter.sol";
import {IWETH9} from "splits-utils/interfaces/external/IWETH9.sol";
import {QuoteParams} from "splits-utils/LibQuotes.sol";
import {SafeTransferLib} from "solady/utils/SafeTransferLib.sol";
import {TokenUtils} from "splits-utils/TokenUtils.sol";

import {ISwapperFlashCallback} from "../interfaces/ISwapperFlashCallback.sol";
import {SwapperImpl} from "../SwapperImpl.sol";
import {SwapperFactory} from "../SwapperFactory.sol";

/// @title Uniswap V3 Swapper Integration
/// @author 0xSplits
/// @notice Used by EOAs & simple bots to execute `Swapper#flash` with uniswap v3
/// @dev This contract uses token = address(0) to refer to ETH.
contract UniV3Swap is ISwapperFlashCallback {
    using SafeTransferLib for address;
    using TokenUtils for address;

    error Unauthorized();
    error InsufficientFunds();

    struct InitFlashParams {
        QuoteParams[] quoteParams;
        FlashCallbackData flashCallbackData;
    }

    struct FlashCallbackData {
        ISwapRouter.ExactInputParams[] exactInputParams;
        address excessRecipient;
    }

    SwapperFactory public immutable swapperFactory;
    ISwapRouter public immutable swapRouter;
    IWETH9 public immutable weth9;

    constructor(SwapperFactory swapperFactory_, ISwapRouter swapRouter_, IWETH9 weth9_) {
        swapperFactory = swapperFactory_;
        swapRouter = swapRouter_;
        weth9 = weth9_;
    }

    /// receive from weth9
    receive() external payable {}

    /// begin `Swapper#flash`
    /// @dev trader may pay ETH & include the extra WETH in `params_.exactInputParams` to make up
    /// for `Swapper#oracle` shortfall. If swapper incentives are insufficient and they still want to push
    /// funds to `beneficiary`. Recipient in `params_.exactInputParams` should always be _this_ contract
    /// so it can handle the approval / payback for Swapper
    function initFlash(SwapperImpl swapper, InitFlashParams calldata params_) external payable {
        swapper.flash(params_.quoteParams, abi.encode(params_.flashCallbackData));
    }

    /// `Swapper#flash` callback
    /// @dev by end of function if `tokenToBeneficiary_` is ETH, must have sent `amountToBeneficiary_`
    /// to `Swapper#payback`. Otherwise, must approve Swapper to transfer `amountToBeneficiary_`
    /// DO NOT HOLD FUNDS IN THIS CONTRACT WITHOUT ADDING PROPER VERIFICATION OF MSG.SENDER
    function swapperFlashCallback(address tokenToBeneficiary_, uint256 amountToBeneficiary_, bytes calldata data_)
        external
    {
        FlashCallbackData memory flashCallbackData = abi.decode(data_, (FlashCallbackData));
        ISwapRouter.ExactInputParams[] memory exactInputParams = flashCallbackData.exactInputParams;

        uint256 ethBalance = address(this).balance;
        if (ethBalance != 0) {
            weth9.deposit{value: ethBalance}();
        }
        uint256 totalOut = (tokenToBeneficiary_._isETH())
            ? weth9.balanceOf(address(this))
            : tokenToBeneficiary_.balanceOf(address(this));

        uint256 length = exactInputParams.length;
        for (uint256 i; i < length;) {
            ISwapRouter.ExactInputParams memory eip = exactInputParams[i];
            address token = _getStartTokenFromPath(eip.path);

            token.safeApprove(address(swapRouter), eip.amountIn);
            totalOut += swapRouter.exactInput(eip);

            unchecked {
                ++i;
            }
        }

        if (totalOut < amountToBeneficiary_) revert InsufficientFunds();

        address excessRecipient = flashCallbackData.excessRecipient;
        if (tokenToBeneficiary_._isETH()) {
            // withdraw WETH from uni swaps to ETH
            uint256 weth9Balance = weth9.balanceOf(address(this));
            weth9.withdraw(weth9Balance);

            // send req'd amt to swapper#payback
            SwapperImpl(msg.sender).payback{value: amountToBeneficiary_}();

            // xfr excess out
            ethBalance = address(this).balance;
            if (ethBalance != 0) {
                excessRecipient.safeTransferETH(ethBalance);
            }
        } else {
            // approve swapper to xfr req'd amt out
            tokenToBeneficiary_.safeApprove(msg.sender, amountToBeneficiary_);

            // xfr excess out
            uint256 excessBalance = ERC20(tokenToBeneficiary_).balanceOf(address(this)) - amountToBeneficiary_;
            if (excessBalance > 0) {
                tokenToBeneficiary_.safeTransfer(excessRecipient, excessBalance);
            }
        }
    }

    function _getStartTokenFromPath(bytes memory path) internal pure returns (address token) {
        assembly {
            token := mload(add(path, 0x14))
        }
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

/// @notice Modern and gas efficient ERC20 + EIP-2612 implementation.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC20.sol)
/// @author Modified from Uniswap (https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2ERC20.sol)
/// @dev Do not manually set balances without updating totalSupply, as the sum of all user balances must not exceed it.
abstract contract ERC20 {
    /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/

    event Transfer(address indexed from, address indexed to, uint256 amount);

    event Approval(address indexed owner, address indexed spender, uint256 amount);

    /*//////////////////////////////////////////////////////////////
                            METADATA STORAGE
    //////////////////////////////////////////////////////////////*/

    string public name;

    string public symbol;

    uint8 public immutable decimals;

    /*//////////////////////////////////////////////////////////////
                              ERC20 STORAGE
    //////////////////////////////////////////////////////////////*/

    uint256 public totalSupply;

    mapping(address => uint256) public balanceOf;

    mapping(address => mapping(address => uint256)) public allowance;

    /*//////////////////////////////////////////////////////////////
                            EIP-2612 STORAGE
    //////////////////////////////////////////////////////////////*/

    uint256 internal immutable INITIAL_CHAIN_ID;

    bytes32 internal immutable INITIAL_DOMAIN_SEPARATOR;

    mapping(address => uint256) public nonces;

    /*//////////////////////////////////////////////////////////////
                               CONSTRUCTOR
    //////////////////////////////////////////////////////////////*/

    constructor(
        string memory _name,
        string memory _symbol,
        uint8 _decimals
    ) {
        name = _name;
        symbol = _symbol;
        decimals = _decimals;

        INITIAL_CHAIN_ID = block.chainid;
        INITIAL_DOMAIN_SEPARATOR = computeDomainSeparator();
    }

    /*//////////////////////////////////////////////////////////////
                               ERC20 LOGIC
    //////////////////////////////////////////////////////////////*/

    function approve(address spender, uint256 amount) public virtual returns (bool) {
        allowance[msg.sender][spender] = amount;

        emit Approval(msg.sender, spender, amount);

        return true;
    }

    function transfer(address to, uint256 amount) public virtual returns (bool) {
        balanceOf[msg.sender] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(msg.sender, to, amount);

        return true;
    }

    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual returns (bool) {
        uint256 allowed = allowance[from][msg.sender]; // Saves gas for limited approvals.

        if (allowed != type(uint256).max) allowance[from][msg.sender] = allowed - amount;

        balanceOf[from] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(from, to, amount);

        return true;
    }

    /*//////////////////////////////////////////////////////////////
                             EIP-2612 LOGIC
    //////////////////////////////////////////////////////////////*/

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual {
        require(deadline >= block.timestamp, "PERMIT_DEADLINE_EXPIRED");

        // Unchecked because the only math done is incrementing
        // the owner's nonce which cannot realistically overflow.
        unchecked {
            address recoveredAddress = ecrecover(
                keccak256(
                    abi.encodePacked(
                        "\x19\x01",
                        DOMAIN_SEPARATOR(),
                        keccak256(
                            abi.encode(
                                keccak256(
                                    "Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"
                                ),
                                owner,
                                spender,
                                value,
                                nonces[owner]++,
                                deadline
                            )
                        )
                    )
                ),
                v,
                r,
                s
            );

            require(recoveredAddress != address(0) && recoveredAddress == owner, "INVALID_SIGNER");

            allowance[recoveredAddress][spender] = value;
        }

        emit Approval(owner, spender, value);
    }

    function DOMAIN_SEPARATOR() public view virtual returns (bytes32) {
        return block.chainid == INITIAL_CHAIN_ID ? INITIAL_DOMAIN_SEPARATOR : computeDomainSeparator();
    }

    function computeDomainSeparator() internal view virtual returns (bytes32) {
        return
            keccak256(
                abi.encode(
                    keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
                    keccak256(bytes(name)),
                    keccak256("1"),
                    block.chainid,
                    address(this)
                )
            );
    }

    /*//////////////////////////////////////////////////////////////
                        INTERNAL MINT/BURN LOGIC
    //////////////////////////////////////////////////////////////*/

    function _mint(address to, uint256 amount) internal virtual {
        totalSupply += amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(address(0), to, amount);
    }

    function _burn(address from, uint256 amount) internal virtual {
        balanceOf[from] -= amount;

        // Cannot underflow because a user's balance
        // will never be larger than the total supply.
        unchecked {
            totalSupply -= amount;
        }

        emit Transfer(from, address(0), amount);
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.17;

import {QuoteParams} from "splits-utils/LibQuotes.sol";

/// @title Oracle Interface
/// @author 0xSplits
interface IOracle {
    function getQuoteAmounts(QuoteParams[] calldata quoteParams_) external view returns (uint256[] memory);
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.7.5;
pragma abicoder v2;

import '@uniswap/v3-core/contracts/interfaces/callback/IUniswapV3SwapCallback.sol';

/// @title Router token swapping functionality
/// @notice Functions for swapping tokens via Uniswap V3
interface ISwapRouter is IUniswapV3SwapCallback {
    struct ExactInputSingleParams {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address recipient;
        uint256 deadline;
        uint256 amountIn;
        uint256 amountOutMinimum;
        uint160 sqrtPriceLimitX96;
    }

    /// @notice Swaps `amountIn` of one token for as much as possible of another token
    /// @param params The parameters necessary for the swap, encoded as `ExactInputSingleParams` in calldata
    /// @return amountOut The amount of the received token
    function exactInputSingle(ExactInputSingleParams calldata params) external payable returns (uint256 amountOut);

    struct ExactInputParams {
        bytes path;
        address recipient;
        uint256 deadline;
        uint256 amountIn;
        uint256 amountOutMinimum;
    }

    /// @notice Swaps `amountIn` of one token for as much as possible of another along the specified path
    /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactInputParams` in calldata
    /// @return amountOut The amount of the received token
    function exactInput(ExactInputParams calldata params) external payable returns (uint256 amountOut);

    struct ExactOutputSingleParams {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address recipient;
        uint256 deadline;
        uint256 amountOut;
        uint256 amountInMaximum;
        uint160 sqrtPriceLimitX96;
    }

    /// @notice Swaps as little as possible of one token for `amountOut` of another token
    /// @param params The parameters necessary for the swap, encoded as `ExactOutputSingleParams` in calldata
    /// @return amountIn The amount of the input token
    function exactOutputSingle(ExactOutputSingleParams calldata params) external payable returns (uint256 amountIn);

    struct ExactOutputParams {
        bytes path;
        address recipient;
        uint256 deadline;
        uint256 amountOut;
        uint256 amountInMaximum;
    }

    /// @notice Swaps as little as possible of one token for `amountOut` of another along the specified path (reversed)
    /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactOutputParams` in calldata
    /// @return amountIn The amount of the input token
    function exactOutput(ExactOutputParams calldata params) external payable returns (uint256 amountIn);
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.17;

/// @title Interface for WETH9
interface IWETH9 {
    /// @notice Deposit ether to get wrapped ether
    function deposit() external payable;

    /// @notice Withdraw wrapped ether to get ether
    function withdraw(uint256) external;

    function balanceOf(address) external view returns (uint256);
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.17;

import {ConvertedQuotePair, SortedConvertedQuotePair} from "./ConvertedQuotePair.sol";

using {_sort, _convert, _convertAndSort} for QuotePair global;

struct QuoteParams {
    QuotePair quotePair;
    uint128 baseAmount;
    bytes data;
}

struct QuotePair {
    address base;
    address quote;
}

struct SortedQuotePair {
    address token0;
    address token1;
}

function _sort(QuotePair memory qp) pure returns (SortedQuotePair memory) {
    return (qp.base > qp.quote)
        ? SortedQuotePair({token0: qp.quote, token1: qp.base})
        : SortedQuotePair({token0: qp.base, token1: qp.quote});
}

function _convert(QuotePair calldata qp, function (address) internal view returns (address) convert)
    view
    returns (ConvertedQuotePair memory)
{
    return ConvertedQuotePair({cBase: convert(qp.base), cQuote: convert(qp.quote)});
}

function _convertAndSort(QuotePair calldata qp, function (address) internal view returns (address) convert)
    view
    returns (SortedConvertedQuotePair memory)
{
    return _convert(qp, convert)._sort();
}

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

/// @notice Safe ETH and ERC20 transfer library that gracefully handles missing return values.
/// @author Solady (https://github.com/vectorized/solady/blob/main/src/utils/SafeTransferLib.sol)
/// @author Modified from Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/SafeTransferLib.sol)
/// @dev Caution! This library won't check that a token has code, responsibility is delegated to the caller.
library SafeTransferLib {
    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                       CUSTOM ERRORS                        */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev The ETH transfer has failed.
    error ETHTransferFailed();

    /// @dev The ERC20 `transferFrom` has failed.
    error TransferFromFailed();

    /// @dev The ERC20 `transfer` has failed.
    error TransferFailed();

    /// @dev The ERC20 `approve` has failed.
    error ApproveFailed();

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                         CONSTANTS                          */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Suggested gas stipend for contract receiving ETH
    /// that disallows any storage writes.
    uint256 internal constant _GAS_STIPEND_NO_STORAGE_WRITES = 2300;

    /// @dev Suggested gas stipend for contract receiving ETH to perform a few
    /// storage reads and writes, but low enough to prevent griefing.
    /// Multiply by a small constant (e.g. 2), if needed.
    uint256 internal constant _GAS_STIPEND_NO_GRIEF = 100000;

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                       ETH OPERATIONS                       */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Sends `amount` (in wei) ETH to `to`.
    /// Reverts upon failure.
    function safeTransferETH(address to, uint256 amount) internal {
        /// @solidity memory-safe-assembly
        assembly {
            // Transfer the ETH and check if it succeeded or not.
            if iszero(call(gas(), to, amount, 0, 0, 0, 0)) {
                // Store the function selector of `ETHTransferFailed()`.
                mstore(0x00, 0xb12d13eb)
                // Revert with (offset, size).
                revert(0x1c, 0x04)
            }
        }
    }

    /// @dev Force sends `amount` (in wei) ETH to `to`, with a `gasStipend`.
    /// The `gasStipend` can be set to a low enough value to prevent
    /// storage writes or gas griefing.
    ///
    /// If sending via the normal procedure fails, force sends the ETH by
    /// creating a temporary contract which uses `SELFDESTRUCT` to force send the ETH.
    ///
    /// Reverts if the current contract has insufficient balance.
    function forceSafeTransferETH(address to, uint256 amount, uint256 gasStipend) internal {
        /// @solidity memory-safe-assembly
        assembly {
            // If insufficient balance, revert.
            if lt(selfbalance(), amount) {
                // Store the function selector of `ETHTransferFailed()`.
                mstore(0x00, 0xb12d13eb)
                // Revert with (offset, size).
                revert(0x1c, 0x04)
            }
            // Transfer the ETH and check if it succeeded or not.
            if iszero(call(gasStipend, to, amount, 0, 0, 0, 0)) {
                mstore(0x00, to) // Store the address in scratch space.
                mstore8(0x0b, 0x73) // Opcode `PUSH20`.
                mstore8(0x20, 0xff) // Opcode `SELFDESTRUCT`.
                // We can directly use `SELFDESTRUCT` in the contract creation.
                // Compatible with `SENDALL`: https://eips.ethereum.org/EIPS/eip-4758
                if iszero(create(amount, 0x0b, 0x16)) {
                    // For better gas estimation.
                    if iszero(gt(gas(), 1000000)) { revert(0, 0) }
                }
            }
        }
    }

    /// @dev Force sends `amount` (in wei) ETH to `to`, with a gas stipend
    /// equal to `_GAS_STIPEND_NO_GRIEF`. This gas stipend is a reasonable default
    /// for 99% of cases and can be overriden with the three-argument version of this
    /// function if necessary.
    ///
    /// If sending via the normal procedure fails, force sends the ETH by
    /// creating a temporary contract which uses `SELFDESTRUCT` to force send the ETH.
    ///
    /// Reverts if the current contract has insufficient balance.
    function forceSafeTransferETH(address to, uint256 amount) internal {
        // Manually inlined because the compiler doesn't inline functions with branches.
        /// @solidity memory-safe-assembly
        assembly {
            // If insufficient balance, revert.
            if lt(selfbalance(), amount) {
                // Store the function selector of `ETHTransferFailed()`.
                mstore(0x00, 0xb12d13eb)
                // Revert with (offset, size).
                revert(0x1c, 0x04)
            }
            // Transfer the ETH and check if it succeeded or not.
            if iszero(call(_GAS_STIPEND_NO_GRIEF, to, amount, 0, 0, 0, 0)) {
                mstore(0x00, to) // Store the address in scratch space.
                mstore8(0x0b, 0x73) // Opcode `PUSH20`.
                mstore8(0x20, 0xff) // Opcode `SELFDESTRUCT`.
                // We can directly use `SELFDESTRUCT` in the contract creation.
                // Compatible with `SENDALL`: https://eips.ethereum.org/EIPS/eip-4758
                if iszero(create(amount, 0x0b, 0x16)) {
                    // For better gas estimation.
                    if iszero(gt(gas(), 1000000)) { revert(0, 0) }
                }
            }
        }
    }

    /// @dev Sends `amount` (in wei) ETH to `to`, with a `gasStipend`.
    /// The `gasStipend` can be set to a low enough value to prevent
    /// storage writes or gas griefing.
    ///
    /// Simply use `gasleft()` for `gasStipend` if you don't need a gas stipend.
    ///
    /// Note: Does NOT revert upon failure.
    /// Returns whether the transfer of ETH is successful instead.
    function trySafeTransferETH(address to, uint256 amount, uint256 gasStipend)
        internal
        returns (bool success)
    {
        /// @solidity memory-safe-assembly
        assembly {
            // Transfer the ETH and check if it succeeded or not.
            success := call(gasStipend, to, amount, 0, 0, 0, 0)
        }
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                      ERC20 OPERATIONS                      */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /// @dev Sends `amount` of ERC20 `token` from `from` to `to`.
    /// Reverts upon failure.
    ///
    /// The `from` account must have at least `amount` approved for
    /// the current contract to manage.
    function safeTransferFrom(address token, address from, address to, uint256 amount) internal {
        /// @solidity memory-safe-assembly
        assembly {
            let m := mload(0x40) // Cache the free memory pointer.

            mstore(0x60, amount) // Store the `amount` argument.
            mstore(0x40, to) // Store the `to` argument.
            mstore(0x2c, shl(96, from)) // Store the `from` argument.
            // Store the function selector of `transferFrom(address,address,uint256)`.
            mstore(0x0c, 0x23b872dd000000000000000000000000)

            if iszero(
                and( // The arguments of `and` are evaluated from right to left.
                    // Set success to whether the call reverted, if not we check it either
                    // returned exactly 1 (can't just be non-zero data), or had no return data.
                    or(eq(mload(0x00), 1), iszero(returndatasize())),
                    call(gas(), token, 0, 0x1c, 0x64, 0x00, 0x20)
                )
            ) {
                // Store the function selector of `TransferFromFailed()`.
                mstore(0x00, 0x7939f424)
                // Revert with (offset, size).
                revert(0x1c, 0x04)
            }

            mstore(0x60, 0) // Restore the zero slot to zero.
            mstore(0x40, m) // Restore the free memory pointer.
        }
    }

    /// @dev Sends all of ERC20 `token` from `from` to `to`.
    /// Reverts upon failure.
    ///
    /// The `from` account must have at least `amount` approved for
    /// the current contract to manage.
    function safeTransferAllFrom(address token, address from, address to)
        internal
        returns (uint256 amount)
    {
        /// @solidity memory-safe-assembly
        assembly {
            let m := mload(0x40) // Cache the free memory pointer.

            mstore(0x40, to) // Store the `to` argument.
            mstore(0x2c, shl(96, from)) // Store the `from` argument.
            // Store the function selector of `balanceOf(address)`.
            mstore(0x0c, 0x70a08231000000000000000000000000)
            if iszero(
                and( // The arguments of `and` are evaluated from right to left.
                    gt(returndatasize(), 0x1f), // At least 32 bytes returned.
                    staticcall(gas(), token, 0x1c, 0x24, 0x60, 0x20)
                )
            ) {
                // Store the function selector of `TransferFromFailed()`.
                mstore(0x00, 0x7939f424)
                // Revert with (offset, size).
                revert(0x1c, 0x04)
            }

            // Store the function selector of `transferFrom(address,address,uint256)`.
            mstore(0x00, 0x23b872dd)
            // The `amount` argument is already written to the memory word at 0x6c.
            amount := mload(0x60)

            if iszero(
                and( // The arguments of `and` are evaluated from right to left.
                    // Set success to whether the call reverted, if not we check it either
                    // returned exactly 1 (can't just be non-zero data), or had no return data.
                    or(eq(mload(0x00), 1), iszero(returndatasize())),
                    call(gas(), token, 0, 0x1c, 0x64, 0x00, 0x20)
                )
            ) {
                // Store the function selector of `TransferFromFailed()`.
                mstore(0x00, 0x7939f424)
                // Revert with (offset, size).
                revert(0x1c, 0x04)
            }

            mstore(0x60, 0) // Restore the zero slot to zero.
            mstore(0x40, m) // Restore the free memory pointer.
        }
    }

    /// @dev Sends `amount` of ERC20 `token` from the current contract to `to`.
    /// Reverts upon failure.
    function safeTransfer(address token, address to, uint256 amount) internal {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x14, to) // Store the `to` argument.
            mstore(0x34, amount) // Store the `amount` argument.
            // Store the function selector of `transfer(address,uint256)`.
            mstore(0x00, 0xa9059cbb000000000000000000000000)

            if iszero(
                and( // The arguments of `and` are evaluated from right to left.
                    // Set success to whether the call reverted, if not we check it either
                    // returned exactly 1 (can't just be non-zero data), or had no return data.
                    or(eq(mload(0x00), 1), iszero(returndatasize())),
                    call(gas(), token, 0, 0x10, 0x44, 0x00, 0x20)
                )
            ) {
                // Store the function selector of `TransferFailed()`.
                mstore(0x00, 0x90b8ec18)
                // Revert with (offset, size).
                revert(0x1c, 0x04)
            }
            // Restore the part of the free memory pointer that was overwritten.
            mstore(0x34, 0)
        }
    }

    /// @dev Sends all of ERC20 `token` from the current contract to `to`.
    /// Reverts upon failure.
    function safeTransferAll(address token, address to) internal returns (uint256 amount) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, 0x70a08231) // Store the function selector of `balanceOf(address)`.
            mstore(0x20, address()) // Store the address of the current contract.
            if iszero(
                and( // The arguments of `and` are evaluated from right to left.
                    gt(returndatasize(), 0x1f), // At least 32 bytes returned.
                    staticcall(gas(), token, 0x1c, 0x24, 0x34, 0x20)
                )
            ) {
                // Store the function selector of `TransferFailed()`.
                mstore(0x00, 0x90b8ec18)
                // Revert with (offset, size).
                revert(0x1c, 0x04)
            }

            mstore(0x14, to) // Store the `to` argument.
            // The `amount` argument is already written to the memory word at 0x34.
            amount := mload(0x34)
            // Store the function selector of `transfer(address,uint256)`.
            mstore(0x00, 0xa9059cbb000000000000000000000000)

            if iszero(
                and( // The arguments of `and` are evaluated from right to left.
                    // Set success to whether the call reverted, if not we check it either
                    // returned exactly 1 (can't just be non-zero data), or had no return data.
                    or(eq(mload(0x00), 1), iszero(returndatasize())),
                    call(gas(), token, 0, 0x10, 0x44, 0x00, 0x20)
                )
            ) {
                // Store the function selector of `TransferFailed()`.
                mstore(0x00, 0x90b8ec18)
                // Revert with (offset, size).
                revert(0x1c, 0x04)
            }
            // Restore the part of the free memory pointer that was overwritten.
            mstore(0x34, 0)
        }
    }

    /// @dev Sets `amount` of ERC20 `token` for `to` to manage on behalf of the current contract.
    /// Reverts upon failure.
    function safeApprove(address token, address to, uint256 amount) internal {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x14, to) // Store the `to` argument.
            mstore(0x34, amount) // Store the `amount` argument.
            // Store the function selector of `approve(address,uint256)`.
            mstore(0x00, 0x095ea7b3000000000000000000000000)

            if iszero(
                and( // The arguments of `and` are evaluated from right to left.
                    // Set success to whether the call reverted, if not we check it either
                    // returned exactly 1 (can't just be non-zero data), or had no return data.
                    or(eq(mload(0x00), 1), iszero(returndatasize())),
                    call(gas(), token, 0, 0x10, 0x44, 0x00, 0x20)
                )
            ) {
                // Store the function selector of `ApproveFailed()`.
                mstore(0x00, 0x3e3f8f73)
                // Revert with (offset, size).
                revert(0x1c, 0x04)
            }
            // Restore the part of the free memory pointer that was overwritten.
            mstore(0x34, 0)
        }
    }

    /// @dev Returns the amount of ERC20 `token` owned by `account`.
    /// Returns zero if the `token` does not exist.
    function balanceOf(address token, address account) internal view returns (uint256 amount) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x14, account) // Store the `account` argument.
            // Store the function selector of `balanceOf(address)`.
            mstore(0x00, 0x70a08231000000000000000000000000)
            amount :=
                mul(
                    mload(0x20),
                    and( // The arguments of `and` are evaluated from right to left.
                        gt(returndatasize(), 0x1f), // At least 32 bytes returned.
                        staticcall(gas(), token, 0x10, 0x24, 0x20, 0x20)
                    )
                )
        }
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.17;

import {SafeTransferLib} from "solady/utils/SafeTransferLib.sol";

/// Library to handle basic token functions for ERC20s & ETH (represented by 0x0)
library TokenUtils {
    using SafeTransferLib for address;

    address internal constant ETH_ADDRESS = address(0);

    function _isETH(address token) internal pure returns (bool) {
        return (token == ETH_ADDRESS);
    }

    function _decimals(address token) internal view returns (uint8) {
        return _isETH(token) ? 18 : ERC20(token).decimals();
    }

    function _balanceOf(address token, address addr) internal view returns (uint256) {
        return _isETH(token) ? addr.balance : ERC20(token).balanceOf(addr);
    }

    function _safeTransfer(address token, address addr, uint256 amount) internal {
        if (_isETH(token)) addr.safeTransferETH(amount);
        else token.safeTransfer(addr, amount);
    }
}

interface ERC20 {
    function decimals() external view returns (uint8);
    function balanceOf(address addr) external view returns (uint256);
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.17;

/// @title Swapper Flash Callback
/// @author 0xSplits
/// @notice Callback for `Swapper#flash`
/// @dev any contract that calls `Swapper#flash` must implement this interface.
/// Inspired by IUniswapV3FlashCallback
interface ISwapperFlashCallback {
    /// Called to `msg.sender` in `Swapper#flash` after transferring `quoteParams`.
    /// @dev In the implementation you must complete the flash swap.
    /// If `tokenToBeneficiary` is ETH, you must deposit `amountToBeneficiary` via `Swapper#payback`.
    /// If `tokenToBeneficiary` is an ERC20, you must use approve Swapper to transfer `amountToBeneficiary`.
    /// The caller of this method will use token = address(0) to refer to ETH.
    /// @param tokenToBeneficiary The token due to the `beneficiary` by the end of `#flash`
    /// @param amountToBeneficiary The amount of `tokenToBeneficiary` due to the `beneficiary` by the end of `#flash`
    /// @param data Any `data` passed through by `msg.sender` of `Swapper#flash`
    function swapperFlashCallback(address tokenToBeneficiary, uint256 amountToBeneficiary, bytes calldata data)
        external;
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.17;

import {ERC20} from "solmate/tokens/ERC20.sol";
import {IOracle} from "splits-oracle/interfaces/IOracle.sol";
import {PausableImpl} from "splits-utils/PausableImpl.sol";
import {QuotePair, QuoteParams, SortedQuotePair} from "splits-utils/LibQuotes.sol";
import {SafeCastLib} from "solady/utils/SafeCastLib.sol";
import {SafeTransferLib} from "solady/utils/SafeTransferLib.sol";
import {TokenUtils} from "splits-utils/TokenUtils.sol";
import {WalletImpl} from "splits-utils/WalletImpl.sol";

import {ISwapperFlashCallback} from "./interfaces/ISwapperFlashCallback.sol";
import {PairScaledOfferFactors} from "./libraries/PairScaledOfferFactors.sol";

/// @title Swapper Implementation
/// @author 0xSplits
/// @notice A contract to trustlessly & automatically convert multi-token
/// onchain revenue into a particular output token.
/// Please be aware, owner has _FULL CONTROL_ of the deployment.
/// @dev This contract uses a modular oracle. Be very careful to use a secure
/// oracle with sensible settings for the desired behavior. Insecure oracles
/// will  result in catastrophic loss of funds.
/// This contract uses token = address(0) to refer to ETH.
contract SwapperImpl is WalletImpl, PausableImpl {
    /// -----------------------------------------------------------------------
    /// libraries
    /// -----------------------------------------------------------------------

    using SafeTransferLib for address;
    using SafeCastLib for uint256;
    using TokenUtils for address;
    using PairScaledOfferFactors for mapping(address => mapping(address => uint32));

    /// -----------------------------------------------------------------------
    /// errors
    /// -----------------------------------------------------------------------

    error Invalid_AmountsToBeneficiary();
    error Invalid_QuoteToken();
    error InsufficientFunds_InContract();
    error InsufficientFunds_FromTrader();

    /// -----------------------------------------------------------------------
    /// structs
    /// -----------------------------------------------------------------------

    struct InitParams {
        address owner;
        bool paused;
        address beneficiary;
        address tokenToBeneficiary;
        IOracle oracle;
        uint32 defaultScaledOfferFactor;
        SetPairScaledOfferFactorParams[] pairScaledOfferFactors;
    }

    struct SetPairScaledOfferFactorParams {
        QuotePair quotePair;
        uint32 scaledOfferFactor;
    }

    /// -----------------------------------------------------------------------
    /// events
    /// -----------------------------------------------------------------------

    event SetBeneficiary(address beneficiary);
    event SetTokenToBeneficiary(address tokenToBeneficiary);
    event SetOracle(IOracle oracle);
    event SetDefaultScaledOfferFactor(uint32 defaultScaledOfferFactor);
    event SetPairScaledOfferFactors(SetPairScaledOfferFactorParams[] params);

    event ReceiveETH(uint256 amount);
    event Payback(address indexed payer, uint256 amount);
    event Flash(
        address indexed beneficiary,
        address indexed trader,
        QuoteParams[] quoteParams,
        address tokenToBeneficiary,
        uint256[] amountsToBeneficiary,
        uint256 excessToBeneficiary
    );

    /// -----------------------------------------------------------------------
    /// storage
    /// -----------------------------------------------------------------------

    /// -----------------------------------------------------------------------
    /// storage - constants & immutables
    /// -----------------------------------------------------------------------

    address public immutable swapperFactory;

    /// @dev percentages measured in hundredths of basis points
    uint32 internal constant PERCENTAGE_SCALE = 100_00_00; // = 100%

    /// -----------------------------------------------------------------------
    /// storage - mutables
    /// -----------------------------------------------------------------------

    /// slot 0 - 11 bytes free

    /// OwnableImpl storage
    /// address internal $owner;
    /// 20 bytes

    /// PausableImpl storage
    /// bool internal $paused;
    /// 1 byte

    /// slot 1 - 0 bytes free

    /// address to receive post-swap tokens
    address internal $beneficiary;
    /// 20 bytes

    /// used to track ETH payback in flash
    uint96 internal $_payback;
    /// 12 bytes

    /// slot 2 - 8 bytes free

    /// token type to send beneficiary
    /// @dev 0x0 used for ETH
    address internal $tokenToBeneficiary;
    /// 20 bytes

    /// default oracle price scaling factor
    /// @dev PERCENTAGE_SCALE = 1e6 = 100_00_00 = 100% = no discount or premium
    /// 99_00_00 = 99% = 1% discount to oracle; 101_00_00 = 101% = 1% premium to oracle
    /// 4 bytes
    uint32 internal $defaultScaledOfferFactor;

    /// slot 3 - 12 bytes free

    /// price oracle for `#flash`
    IOracle internal $oracle;
    /// 20 bytes

    /// slot 4 - 0 bytes free

    /// scaledOfferFactors for specific quote pairs
    /// 32 bytes
    mapping(address => mapping(address => uint32)) internal $_pairScaledOfferFactors;

    /// -----------------------------------------------------------------------
    /// constructor & initializer
    /// -----------------------------------------------------------------------

    constructor() {
        swapperFactory = msg.sender;
    }

    function initializer(InitParams calldata params_) external {
        // only swapperFactory may call `initializer`
        if (msg.sender != swapperFactory) revert Unauthorized();

        // don't need to init wallet separately
        __initPausable({owner_: params_.owner, paused_: params_.paused});

        $beneficiary = params_.beneficiary;
        $tokenToBeneficiary = params_.tokenToBeneficiary;
        $oracle = params_.oracle;
        $defaultScaledOfferFactor = params_.defaultScaledOfferFactor;

        $_pairScaledOfferFactors._set(params_.pairScaledOfferFactors);
    }

    /// -----------------------------------------------------------------------
    /// functions
    /// -----------------------------------------------------------------------

    /// -----------------------------------------------------------------------
    /// functions - public & external
    /// -----------------------------------------------------------------------

    /// -----------------------------------------------------------------------
    /// functions - public & external - onlyOwner
    /// -----------------------------------------------------------------------

    /// set beneficiary
    function setBeneficiary(address beneficiary_) external onlyOwner {
        $beneficiary = beneficiary_;
        emit SetBeneficiary(beneficiary_);
    }

    /// set tokenToBeneficiary
    function setTokenToBeneficiary(address tokenToBeneficiary_) external onlyOwner {
        $tokenToBeneficiary = tokenToBeneficiary_;
        emit SetTokenToBeneficiary(tokenToBeneficiary_);
    }

    /// set oracle
    function setOracle(IOracle oracle_) external onlyOwner {
        $oracle = oracle_;
        emit SetOracle(oracle_);
    }

    /// set defaultScaledOfferFactor
    function setDefaultScaledOfferFactor(uint32 defaultScaledOfferFactor_) external onlyOwner {
        $defaultScaledOfferFactor = defaultScaledOfferFactor_;
        emit SetDefaultScaledOfferFactor(defaultScaledOfferFactor_);
    }

    /// set pair scaled offer factors
    function setPairScaledOfferFactors(SetPairScaledOfferFactorParams[] calldata params_) external onlyOwner {
        $_pairScaledOfferFactors._set(params_);
        emit SetPairScaledOfferFactors(params_);
    }

    /// -----------------------------------------------------------------------
    /// functions - public & external - view
    /// -----------------------------------------------------------------------

    function beneficiary() external view returns (address) {
        return $beneficiary;
    }

    function tokenToBeneficiary() external view returns (address) {
        return $tokenToBeneficiary;
    }

    function oracle() external view returns (IOracle) {
        return $oracle;
    }

    function defaultScaledOfferFactor() external view returns (uint32) {
        return $defaultScaledOfferFactor;
    }

    /// get pair scaled offer factors for an array of quote pairs
    function getPairScaledOfferFactors(QuotePair[] calldata quotePairs_)
        external
        view
        returns (uint32[] memory pairScaledOfferFactors)
    {
        uint256 length = quotePairs_.length;
        pairScaledOfferFactors = new uint32[](length);
        for (uint256 i; i < length;) {
            pairScaledOfferFactors[i] = $_pairScaledOfferFactors._get(quotePairs_[i]);
            unchecked {
                ++i;
            }
        }
    }

    /// -----------------------------------------------------------------------
    /// functions - public & external - permissionless
    /// -----------------------------------------------------------------------

    /// emit event when receiving ETH
    /// @dev implemented w/i clone bytecode
    /* receive() external payable { */
    /*     emit ReceiveETH(msg.value); */
    /* } */

    /// allows `#flash` to track ETH payback to `beneficiary`
    /// @dev if used outside `#swapperFlashCallback`, msg.sender may lose funds.
    /// Accumulates until next flash call
    function payback() external payable {
        $_payback += msg.value.toUint96();
        emit Payback(msg.sender, msg.value);
    }

    /// allow third parties to withdraw tokens in return for sending `tokenToBeneficiary` to `beneficiary`
    function flash(QuoteParams[] calldata quoteParams_, bytes calldata callbackData_)
        external
        pausable
        returns (uint256)
    {
        address _tokenToBeneficiary = $tokenToBeneficiary;
        (uint256 amountToBeneficiary, uint256[] memory amountsToBeneficiary) =
            _transferToTrader(_tokenToBeneficiary, quoteParams_);

        ISwapperFlashCallback(msg.sender).swapperFlashCallback({
            tokenToBeneficiary: _tokenToBeneficiary,
            amountToBeneficiary: amountToBeneficiary,
            data: callbackData_
        });

        address _beneficiary = $beneficiary;
        uint256 excessToBeneficiary = _transferToBeneficiary(_beneficiary, _tokenToBeneficiary, amountToBeneficiary);

        emit Flash(
            _beneficiary, msg.sender, quoteParams_, _tokenToBeneficiary, amountsToBeneficiary, excessToBeneficiary
        );

        return amountToBeneficiary + excessToBeneficiary;
    }

    /// -----------------------------------------------------------------------
    /// functions - private & internal
    /// -----------------------------------------------------------------------

    function _transferToTrader(address tokenToBeneficiary_, QuoteParams[] calldata quoteParams_)
        internal
        returns (uint256 amountToBeneficiary, uint256[] memory amountsToBeneficiary)
    {
        uint256[] memory unscaledAmountsToBeneficiary = $oracle.getQuoteAmounts(quoteParams_);
        uint256 length = quoteParams_.length;
        if (unscaledAmountsToBeneficiary.length != length) revert Invalid_AmountsToBeneficiary();

        amountsToBeneficiary = new uint256[](length);
        uint256 scaledAmountToBeneficiary;
        uint128 amountToTrader;
        address tokenToTrader;
        for (uint256 i; i < length;) {
            QuoteParams calldata qp = quoteParams_[i];

            if (tokenToBeneficiary_ != qp.quotePair.quote) revert Invalid_QuoteToken();
            tokenToTrader = qp.quotePair.base;
            amountToTrader = qp.baseAmount;

            if (amountToTrader > tokenToTrader._balanceOf(address(this))) {
                revert InsufficientFunds_InContract();
            }

            uint32 scaledOfferFactor = $_pairScaledOfferFactors._get(qp.quotePair._sort());
            if (scaledOfferFactor == 0) {
                scaledOfferFactor = $defaultScaledOfferFactor;
            }

            scaledAmountToBeneficiary = unscaledAmountsToBeneficiary[i] * scaledOfferFactor / PERCENTAGE_SCALE;
            amountsToBeneficiary[i] = scaledAmountToBeneficiary;
            amountToBeneficiary += scaledAmountToBeneficiary;
            tokenToTrader._safeTransfer(msg.sender, amountToTrader);

            unchecked {
                ++i;
            }
        }
    }

    function _transferToBeneficiary(address beneficiary_, address tokenToBeneficiary_, uint256 amountToBeneficiary_)
        internal
        returns (uint256 excessToBeneficiary)
    {
        if (tokenToBeneficiary_._isETH()) {
            if ($_payback < amountToBeneficiary_) {
                revert InsufficientFunds_FromTrader();
            }
            $_payback = 0;

            // send ETH to `beneficiary`
            uint256 ethBalance = address(this).balance;
            excessToBeneficiary = ethBalance - amountToBeneficiary_;
            beneficiary_.safeTransferETH(ethBalance);
        } else {
            tokenToBeneficiary_.safeTransferFrom(msg.sender, beneficiary_, amountToBeneficiary_);

            // flush excess `tokenToBeneficiary` to `beneficiary`
            excessToBeneficiary = ERC20(tokenToBeneficiary_).balanceOf(address(this));
            if (excessToBeneficiary > 0) {
                tokenToBeneficiary_.safeTransfer(beneficiary_, excessToBeneficiary);
            }
        }
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.17;

import {IOracle} from "splits-oracle/interfaces/IOracle.sol";
import {OracleParams} from "splits-oracle/peripherals/OracleParams.sol";
import {LibClone} from "splits-utils/LibClone.sol";

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

/// @title Swapper Factory
/// @author 0xSplits
/// @notice Factory for creating Swappers
/// @dev This contract uses token = address(0) to refer to ETH.
contract SwapperFactory {
    using LibClone for address;

    event CreateSwapper(SwapperImpl indexed swapper, SwapperImpl.InitParams params);

    struct CreateSwapperParams {
        address owner;
        bool paused;
        address beneficiary;
        address tokenToBeneficiary;
        OracleParams oracleParams;
        uint32 defaultScaledOfferFactor;
        SwapperImpl.SetPairScaledOfferFactorParams[] pairScaledOfferFactors;
    }

    SwapperImpl public immutable swapperImpl;

    constructor() {
        swapperImpl = new SwapperImpl();
    }

    /// -----------------------------------------------------------------------
    /// functions - public & external
    /// -----------------------------------------------------------------------

    function createSwapper(CreateSwapperParams calldata params_) external returns (SwapperImpl swapper) {
        IOracle oracle = params_.oracleParams._parseIntoOracle();

        swapper = SwapperImpl(payable(address(swapperImpl).clone()));
        SwapperImpl.InitParams memory swapperInitParams = SwapperImpl.InitParams({
            owner: params_.owner,
            paused: params_.paused,
            beneficiary: params_.beneficiary,
            tokenToBeneficiary: params_.tokenToBeneficiary,
            oracle: oracle,
            defaultScaledOfferFactor: params_.defaultScaledOfferFactor,
            pairScaledOfferFactors: params_.pairScaledOfferFactors
        });
        swapper.initializer(swapperInitParams);

        emit CreateSwapper({swapper: swapper, params: swapperInitParams});
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.5.0;

/// @title Callback for IUniswapV3PoolActions#swap
/// @notice Any contract that calls IUniswapV3PoolActions#swap must implement this interface
interface IUniswapV3SwapCallback {
    /// @notice Called to `msg.sender` after executing a swap via IUniswapV3Pool#swap.
    /// @dev In the implementation you must pay the pool tokens owed for the swap.
    /// The caller of this method must be checked to be a UniswapV3Pool deployed by the canonical UniswapV3Factory.
    /// amount0Delta and amount1Delta can both be 0 if no tokens were swapped.
    /// @param amount0Delta The amount of token0 that was sent (negative) or must be received (positive) by the pool by
    /// the end of the swap. If positive, the callback must send that amount of token0 to the pool.
    /// @param amount1Delta The amount of token1 that was sent (negative) or must be received (positive) by the pool by
    /// the end of the swap. If positive, the callback must send that amount of token1 to the pool.
    /// @param data Any data passed through by the caller via the IUniswapV3PoolActions#swap call
    function uniswapV3SwapCallback(
        int256 amount0Delta,
        int256 amount1Delta,
        bytes calldata data
    ) external;
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.17;

using {_sort} for ConvertedQuotePair global;

struct ConvertedQuotePair {
    address cBase;
    address cQuote;
}

struct SortedConvertedQuotePair {
    address cToken0;
    address cToken1;
}

function _sort(ConvertedQuotePair memory cqp) pure returns (SortedConvertedQuotePair memory) {
    return (cqp.cBase > cqp.cQuote)
        ? SortedConvertedQuotePair({cToken0: cqp.cQuote, cToken1: cqp.cBase})
        : SortedConvertedQuotePair({cToken0: cqp.cBase, cToken1: cqp.cQuote});
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.17;

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

/// @title Pausable Implementation
/// @author 0xSplits
/// @notice Pausable clone-implementation
abstract contract PausableImpl is OwnableImpl {
    error Paused();

    event SetPaused(bool paused);

    /// -----------------------------------------------------------------------
    /// storage - mutables
    /// -----------------------------------------------------------------------

    /// slot 0 - 11 bytes free

    /// OwnableImpl storage
    /// address internal $owner;
    /// 20 bytes

    bool internal $paused;
    /// 1 byte

    /// -----------------------------------------------------------------------
    /// constructor & initializer
    /// -----------------------------------------------------------------------

    constructor() {}

    function __initPausable(address owner_, bool paused_) internal virtual {
        OwnableImpl.__initOwnable(owner_);
        $paused = paused_;
    }

    /// -----------------------------------------------------------------------
    /// modifiers
    /// -----------------------------------------------------------------------

    modifier pausable() virtual {
        if (paused()) revert Paused();
        _;
    }

    /// -----------------------------------------------------------------------
    /// functions - public & external - onlyOwner
    /// -----------------------------------------------------------------------

    function setPaused(bool paused_) public virtual onlyOwner {
        $paused = paused_;
        emit SetPaused(paused_);
    }

    /// -----------------------------------------------------------------------
    /// functions - public & external - view
    /// -----------------------------------------------------------------------

    function paused() public view virtual returns (bool) {
        return $paused;
    }
}

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

/// @notice Safe integer casting library that reverts on overflow.
/// @author Solady (https://github.com/vectorized/solady/blob/main/src/utils/SafeCastLib.sol)
/// @author Modified from OpenZeppelin (https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/math/SafeCast.sol)
library SafeCastLib {
    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                       CUSTOM ERRORS                        */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    error Overflow();

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*          UNSIGNED INTEGER SAFE CASTING OPERATIONS          */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    function toUint8(uint256 x) internal pure returns (uint8) {
        if (x >= 1 << 8) _revertOverflow();
        return uint8(x);
    }

    function toUint16(uint256 x) internal pure returns (uint16) {
        if (x >= 1 << 16) _revertOverflow();
        return uint16(x);
    }

    function toUint24(uint256 x) internal pure returns (uint24) {
        if (x >= 1 << 24) _revertOverflow();
        return uint24(x);
    }

    function toUint32(uint256 x) internal pure returns (uint32) {
        if (x >= 1 << 32) _revertOverflow();
        return uint32(x);
    }

    function toUint40(uint256 x) internal pure returns (uint40) {
        if (x >= 1 << 40) _revertOverflow();
        return uint40(x);
    }

    function toUint48(uint256 x) internal pure returns (uint48) {
        if (x >= 1 << 48) _revertOverflow();
        return uint48(x);
    }

    function toUint56(uint256 x) internal pure returns (uint56) {
        if (x >= 1 << 56) _revertOverflow();
        return uint56(x);
    }

    function toUint64(uint256 x) internal pure returns (uint64) {
        if (x >= 1 << 64) _revertOverflow();
        return uint64(x);
    }

    function toUint72(uint256 x) internal pure returns (uint72) {
        if (x >= 1 << 72) _revertOverflow();
        return uint72(x);
    }

    function toUint80(uint256 x) internal pure returns (uint80) {
        if (x >= 1 << 80) _revertOverflow();
        return uint80(x);
    }

    function toUint88(uint256 x) internal pure returns (uint88) {
        if (x >= 1 << 88) _revertOverflow();
        return uint88(x);
    }

    function toUint96(uint256 x) internal pure returns (uint96) {
        if (x >= 1 << 96) _revertOverflow();
        return uint96(x);
    }

    function toUint104(uint256 x) internal pure returns (uint104) {
        if (x >= 1 << 104) _revertOverflow();
        return uint104(x);
    }

    function toUint112(uint256 x) internal pure returns (uint112) {
        if (x >= 1 << 112) _revertOverflow();
        return uint112(x);
    }

    function toUint120(uint256 x) internal pure returns (uint120) {
        if (x >= 1 << 120) _revertOverflow();
        return uint120(x);
    }

    function toUint128(uint256 x) internal pure returns (uint128) {
        if (x >= 1 << 128) _revertOverflow();
        return uint128(x);
    }

    function toUint136(uint256 x) internal pure returns (uint136) {
        if (x >= 1 << 136) _revertOverflow();
        return uint136(x);
    }

    function toUint144(uint256 x) internal pure returns (uint144) {
        if (x >= 1 << 144) _revertOverflow();
        return uint144(x);
    }

    function toUint152(uint256 x) internal pure returns (uint152) {
        if (x >= 1 << 152) _revertOverflow();
        return uint152(x);
    }

    function toUint160(uint256 x) internal pure returns (uint160) {
        if (x >= 1 << 160) _revertOverflow();
        return uint160(x);
    }

    function toUint168(uint256 x) internal pure returns (uint168) {
        if (x >= 1 << 168) _revertOverflow();
        return uint168(x);
    }

    function toUint176(uint256 x) internal pure returns (uint176) {
        if (x >= 1 << 176) _revertOverflow();
        return uint176(x);
    }

    function toUint184(uint256 x) internal pure returns (uint184) {
        if (x >= 1 << 184) _revertOverflow();
        return uint184(x);
    }

    function toUint192(uint256 x) internal pure returns (uint192) {
        if (x >= 1 << 192) _revertOverflow();
        return uint192(x);
    }

    function toUint200(uint256 x) internal pure returns (uint200) {
        if (x >= 1 << 200) _revertOverflow();
        return uint200(x);
    }

    function toUint208(uint256 x) internal pure returns (uint208) {
        if (x >= 1 << 208) _revertOverflow();
        return uint208(x);
    }

    function toUint216(uint256 x) internal pure returns (uint216) {
        if (x >= 1 << 216) _revertOverflow();
        return uint216(x);
    }

    function toUint224(uint256 x) internal pure returns (uint224) {
        if (x >= 1 << 224) _revertOverflow();
        return uint224(x);
    }

    function toUint232(uint256 x) internal pure returns (uint232) {
        if (x >= 1 << 232) _revertOverflow();
        return uint232(x);
    }

    function toUint240(uint256 x) internal pure returns (uint240) {
        if (x >= 1 << 240) _revertOverflow();
        return uint240(x);
    }

    function toUint248(uint256 x) internal pure returns (uint248) {
        if (x >= 1 << 248) _revertOverflow();
        return uint248(x);
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*           SIGNED INTEGER SAFE CASTING OPERATIONS           */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    function toInt8(int256 x) internal pure returns (int8) {
        int8 y = int8(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt16(int256 x) internal pure returns (int16) {
        int16 y = int16(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt24(int256 x) internal pure returns (int24) {
        int24 y = int24(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt32(int256 x) internal pure returns (int32) {
        int32 y = int32(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt40(int256 x) internal pure returns (int40) {
        int40 y = int40(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt48(int256 x) internal pure returns (int48) {
        int48 y = int48(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt56(int256 x) internal pure returns (int56) {
        int56 y = int56(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt64(int256 x) internal pure returns (int64) {
        int64 y = int64(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt72(int256 x) internal pure returns (int72) {
        int72 y = int72(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt80(int256 x) internal pure returns (int80) {
        int80 y = int80(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt88(int256 x) internal pure returns (int88) {
        int88 y = int88(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt96(int256 x) internal pure returns (int96) {
        int96 y = int96(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt104(int256 x) internal pure returns (int104) {
        int104 y = int104(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt112(int256 x) internal pure returns (int112) {
        int112 y = int112(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt120(int256 x) internal pure returns (int120) {
        int120 y = int120(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt128(int256 x) internal pure returns (int128) {
        int128 y = int128(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt136(int256 x) internal pure returns (int136) {
        int136 y = int136(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt144(int256 x) internal pure returns (int144) {
        int144 y = int144(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt152(int256 x) internal pure returns (int152) {
        int152 y = int152(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt160(int256 x) internal pure returns (int160) {
        int160 y = int160(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt168(int256 x) internal pure returns (int168) {
        int168 y = int168(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt176(int256 x) internal pure returns (int176) {
        int176 y = int176(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt184(int256 x) internal pure returns (int184) {
        int184 y = int184(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt192(int256 x) internal pure returns (int192) {
        int192 y = int192(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt200(int256 x) internal pure returns (int200) {
        int200 y = int200(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt208(int256 x) internal pure returns (int208) {
        int208 y = int208(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt216(int256 x) internal pure returns (int216) {
        int216 y = int216(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt224(int256 x) internal pure returns (int224) {
        int224 y = int224(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt232(int256 x) internal pure returns (int232) {
        int232 y = int232(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt240(int256 x) internal pure returns (int240) {
        int240 y = int240(x);
        if (x != y) _revertOverflow();
        return y;
    }

    function toInt248(int256 x) internal pure returns (int248) {
        int248 y = int248(x);
        if (x != y) _revertOverflow();
        return y;
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*         UNSIGNED TO SIGNED SAFE CASTING OPERATIONS         */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    function toInt256(uint256 x) internal pure returns (int256) {
        if (x >= 1 << 255) _revertOverflow();
        return int256(x);
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                      PRIVATE HELPERS                       */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    function _revertOverflow() private pure {
        /// @solidity memory-safe-assembly
        assembly {
            // Store the function selector of `Overflow()`.
            mstore(0x00, 0x35278d12)
            // Revert with (offset, size).
            revert(0x1c, 0x04)
        }
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.17;

import {ERC1155TokenReceiver} from "solmate/tokens/ERC1155.sol";
import {ERC721TokenReceiver} from "solmate/tokens/ERC721.sol";

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

/// @title Wallet Implementation
/// @author 0xSplits
/// @notice Minimal smart wallet clone-implementation
abstract contract WalletImpl is OwnableImpl, ERC721TokenReceiver, ERC1155TokenReceiver {
    struct Call {
        address to;
        uint256 value;
        bytes data;
    }

    event ExecCalls(Call[] calls);

    /// -----------------------------------------------------------------------
    /// storage - mutables
    /// -----------------------------------------------------------------------

    /// slot 0 - 12 bytes free

    /// OwnableImpl storage
    /// address internal $owner;
    /// 20 bytes

    /// -----------------------------------------------------------------------
    /// constructor & initializer
    /// -----------------------------------------------------------------------

    constructor() {}

    function __initWallet(address owner_) internal {
        OwnableImpl.__initOwnable(owner_);
    }

    /// -----------------------------------------------------------------------
    /// functions - external & public - onlyOwner
    /// -----------------------------------------------------------------------

    /// allow owner to execute arbitrary calls
    function execCalls(Call[] calldata calls_)
        external
        payable
        onlyOwner
        returns (uint256 blockNumber, bytes[] memory returnData)
    {
        blockNumber = block.number;
        uint256 length = calls_.length;
        returnData = new bytes[](length);

        bool success;
        for (uint256 i; i < length;) {
            Call calldata calli = calls_[i];
            (success, returnData[i]) = calli.to.call{value: calli.value}(calli.data);
            require(success, string(returnData[i]));

            unchecked {
                ++i;
            }
        }

        emit ExecCalls(calls_);
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.17;

import {QuotePair, SortedQuotePair} from "splits-utils/LibQuotes.sol";

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

/// @title PairScaledOfferFactors Library
/// @author 0xSplits
/// @notice Setters & getters for quote pairs' scaledOfferFactors
library PairScaledOfferFactors {
    /// set pairs' scaled offer factors
    function _set(
        mapping(address => mapping(address => uint32)) storage self,
        SwapperImpl.SetPairScaledOfferFactorParams[] calldata params_
    ) internal {
        uint256 length = params_.length;
        for (uint256 i; i < length;) {
            _set(self, params_[i]);
            unchecked {
                ++i;
            }
        }
    }

    /// set pair's scaled offer factor
    function _set(
        mapping(address => mapping(address => uint32)) storage self,
        SwapperImpl.SetPairScaledOfferFactorParams calldata params_
    ) internal {
        SortedQuotePair memory sqp = params_.quotePair._sort();
        self[sqp.token0][sqp.token1] = params_.scaledOfferFactor;
    }

    /// get pair's scaled offer factor
    function _get(mapping(address => mapping(address => uint32)) storage self, QuotePair calldata quotePair_)
        internal
        view
        returns (uint32)
    {
        return _get(self, quotePair_._sort());
    }

    /// get pair's scaled offer factor
    function _get(mapping(address => mapping(address => uint32)) storage self, SortedQuotePair memory sqp_)
        internal
        view
        returns (uint32)
    {
        return self[sqp_.token0][sqp_.token1];
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.17;

import {AddressUtils} from "splits-utils/AddressUtils.sol";

import {IOracle} from "../interfaces/IOracle.sol";
import {IOracleFactory} from "../interfaces/IOracleFactory.sol";

using {_parseIntoOracle} for OracleParams global;

using AddressUtils for address;

struct OracleParams {
    IOracle oracle;
    CreateOracleParams createOracleParams;
}

struct CreateOracleParams {
    IOracleFactory factory;
    bytes data;
}

function _parseIntoOracle(OracleParams calldata oracleParams_) returns (IOracle) {
    if (address(oracleParams_.oracle)._isNotEmpty()) {
        return oracleParams_.oracle;
    } else {
        // if oracle not provided, create one with provided params
        CreateOracleParams calldata createOracleParams = oracleParams_.createOracleParams;
        return createOracleParams.factory.createOracle(createOracleParams.data);
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.17;

/// @title Modified minimal proxy
/// @author 0xSplits
/// @author Solady (https://github.com/vectorized/solady/blob/main/src/utils/LibClone.sol)
/// @dev Modified minimal proxy includes a `receive()` method that emits the
/// `ReceiveETH(uint256)` event to skip `DELEGATECALL` when there is no calldata.
/// Enables us to accept hard gas-capped `sends` & `transfers` for maximum backwards
/// composability.
library LibClone {
    error DeploymentFailed();

    uint256 private constant FREE_PTR = 0x40;
    uint256 private constant ZERO_PTR = 0x60;

    /// @dev Deploys a modified minimal proxy of `implementation`
    function clone(address implementation) internal returns (address instance) {
        assembly ("memory-safe") {
            /**
             * --------------------------------------------------------------------------+
             * CREATION (9 bytes - 0x09)                                                 |
             * --------------------------------------------------------------------------|
             * Opcode     | Mnemonic          | Stack     | Memory                       |
             * --------------------------------------------------------------------------|
             * 60 runSize | PUSH1 runSize     | r         |                              |
             * 3d         | RETURNDATASIZE    | 0 r       |                              |
             * 81         | DUP2              | r 0 r     |                              |
             * 60 offset  | PUSH1 offset      | o r 0 r   |                              |
             * 3d         | RETURNDATASIZE    | 0 o r 0 r |                              |
             * 39         | CODECOPY          | 0 r       | [0..runSize): runtime code   |
             * f3         | RETURN            |           | [0..runSize): runtime code   |
             * --------------------------------------------------------------------------|
             * RUNTIME (89 bytes - 0x59)                                                 |
             * --------------------------------------------------------------------------|
             * Opcode  | Mnemonic       | Stack                  | Memory                |
             * --------------------------------------------------------------------------|
             *                                                                           |
             * 36      | CALLDATASIZE   | cds                    |                       |
             * 60 0x2c | PUSH1 0x2c     | 0x2c cds               |                       |
             * 57      | JUMPI          |                        |                       |
             * 34      | CALLVALUE      | cv                     |                       |
             * 3d      | RETURNDATASIZE | 0 cv                   |                       |
             * 52      | MSTORE         |                        | [0..0x20): callvalue  |
             * 7f sig  | PUSH32 0x9e..  | sig                    | [0..0x20): callvalue  |
             * 59      | MSIZE          | 0x20 sig               | [0..0x20): callvalue  |
             * 3d      | RETURNDATASIZE | 0 0x20 sig             | [0..0x20): callvalue  |
             * a1      | LOG1           |                        | [0..0x20): callvalue  |
             * 00      | STOP           |                        | [0..0x20): callvalue  |
             * 5b      | JUMPDEST       |                        |                       |
             *                                                                           |
             * ::: keep some values in stack ::::::::::::::::::::::::::::::::::::::::::: |
             * 3d      | RETURNDATASIZE | 0                      |                       |
             * 3d      | RETURNDATASIZE | 0 0                    |                       |
             * 3d      | RETURNDATASIZE | 0 0 0                  |                       |
             * 3d      | RETURNDATASIZE | 0 0 0 0                |                       |
             *                                                                           |
             * ::: copy calldata to memory ::::::::::::::::::::::::::::::::::::::::::::: |
             * 36      | CALLDATASIZE   | cds 0 0 0 0            |                       |
             * 3d      | RETURNDATASIZE | 0 cds 0 0 0 0          |                       |
             * 3d      | RETURNDATASIZE | 0 0 cds 0 0 0 0        |                       |
             * 37      | CALLDATACOPY   | 0 0 0 0                | [0..cds): calldata    |
             *                                                                           |
             * ::: delegate call to the implementation contract :::::::::::::::::::::::: |
             * 36      | CALLDATASIZE   | cds 0 0 0 0            | [0..cds): calldata    |
             * 3d      | RETURNDATASIZE | 0 cds 0 0 0 0          | [0..cds): calldata    |
             * 73 addr | PUSH20 addr    | addr 0 cds 0 0 0 0     | [0..cds): calldata    |
             * 5a      | GAS            | gas addr 0 cds 0 0 0 0 | [0..cds): calldata    |
             * f4      | DELEGATECALL   | success 0 0            | [0..cds): calldata    |
             *                                                                           |
             * ::: copy return data to memory :::::::::::::::::::::::::::::::::::::::::: |
             * 3d      | RETURNDATASIZE | rds success 0 0        | [0..cds): calldata    |
             * 3d      | RETURNDATASIZE | rds rds success 0 0    | [0..cds): calldata    |
             * 93      | SWAP4          | 0 rds success 0 rds    | [0..cds): calldata    |
             * 80      | DUP1           | 0 0 rds success 0 rds  | [0..cds): calldata    |
             * 3e      | RETURNDATACOPY | success 0 rds          | [0..rds): returndata  |
             *                                                                           |
             * 60 0x57 | PUSH1 0x57     | 0x57 success 0 rds     | [0..rds): returndata  |
             * 57      | JUMPI          | 0 rds                  | [0..rds): returndata  |
             *                                                                           |
             * ::: revert :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: |
             * fd      | REVERT         |                        | [0..rds): returndata  |
             *                                                                           |
             * ::: return :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: |
             * 5b      | JUMPDEST       | 0 rds                  | [0..rds): returndata  |
             * f3      | RETURN         |                        | [0..rds): returndata  |
             * --------------------------------------------------------------------------+
             * TOTAL INIT (98 bytes - 0x62)                                                 |
             * --------------------------------------------------------------------------|
             */

            // save free pointer
            let fp := mload(FREE_PTR)

            mstore(0x51, 0x5af43d3d93803e605757fd5bf3) // 13 bytes
            mstore(0x44, implementation) // 20 bytes
            mstore(0x30, 0x593da1005b3d3d3d3d363d3d37363d73) // 16 bytes
            // `keccak256("ReceiveETH(uint256)")`
            mstore(0x20, 0x9e4ac34f21c619cefc926c8bd93b54bf5a39c7ab2127a895af1cc0691d7e3dff) // 32 bytes
            mstore(0x00, 0x60593d8160093d39f336602c57343d527f) // 17 bytes

            // total: 113 bytes = 0x71
            // offset: 15 bytes = 0x0f
            // data: 98 bytes = 0x62
            instance := create(0, 0x0f, 0x71)

            // restore free pointer, zero slot
            mstore(FREE_PTR, fp)
            mstore(ZERO_PTR, 0)

            // If `instance` is zero, revert.
            if iszero(instance) {
                // Store the function selector of `DeploymentFailed()`.
                mstore(0x00, 0x30116425)
                // Revert with (offset, size).
                revert(0x1c, 0x04)
            }
        }
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.17;

/// @title Ownable Implementation
/// @author 0xSplits
/// @notice Ownable clone-implementation
abstract contract OwnableImpl {
    error Unauthorized();

    event OwnershipTransferred(address indexed oldOwner, address indexed newOwner);

    /// -----------------------------------------------------------------------
    /// storage - mutables
    /// -----------------------------------------------------------------------

    /// slot 0 - 12 bytes free

    address internal $owner;
    /// 20 bytes

    /// -----------------------------------------------------------------------
    /// constructor & initializer
    /// -----------------------------------------------------------------------

    constructor() {}

    function __initOwnable(address owner_) internal virtual {
        emit OwnershipTransferred(address(0), owner_);
        $owner = owner_;
    }

    /// -----------------------------------------------------------------------
    /// modifiers
    /// -----------------------------------------------------------------------

    modifier onlyOwner() virtual {
        if (msg.sender != owner()) revert Unauthorized();
        _;
    }

    /// -----------------------------------------------------------------------
    /// functions - public & external - onlyOwner
    /// -----------------------------------------------------------------------

    function transferOwnership(address owner_) public virtual onlyOwner {
        $owner = owner_;
        emit OwnershipTransferred(msg.sender, owner_);
    }

    /// -----------------------------------------------------------------------
    /// functions - public & external - view
    /// -----------------------------------------------------------------------

    function owner() public view virtual returns (address) {
        return $owner;
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

/// @notice Minimalist and gas efficient standard ERC1155 implementation.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC1155.sol)
abstract contract ERC1155 {
    /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/

    event TransferSingle(
        address indexed operator,
        address indexed from,
        address indexed to,
        uint256 id,
        uint256 amount
    );

    event TransferBatch(
        address indexed operator,
        address indexed from,
        address indexed to,
        uint256[] ids,
        uint256[] amounts
    );

    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    event URI(string value, uint256 indexed id);

    /*//////////////////////////////////////////////////////////////
                             ERC1155 STORAGE
    //////////////////////////////////////////////////////////////*/

    mapping(address => mapping(uint256 => uint256)) public balanceOf;

    mapping(address => mapping(address => bool)) public isApprovedForAll;

    /*//////////////////////////////////////////////////////////////
                             METADATA LOGIC
    //////////////////////////////////////////////////////////////*/

    function uri(uint256 id) public view virtual returns (string memory);

    /*//////////////////////////////////////////////////////////////
                              ERC1155 LOGIC
    //////////////////////////////////////////////////////////////*/

    function setApprovalForAll(address operator, bool approved) public virtual {
        isApprovedForAll[msg.sender][operator] = approved;

        emit ApprovalForAll(msg.sender, operator, approved);
    }

    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        uint256 amount,
        bytes calldata data
    ) public virtual {
        require(msg.sender == from || isApprovedForAll[from][msg.sender], "NOT_AUTHORIZED");

        balanceOf[from][id] -= amount;
        balanceOf[to][id] += amount;

        emit TransferSingle(msg.sender, from, to, id, amount);

        require(
            to.code.length == 0
                ? to != address(0)
                : ERC1155TokenReceiver(to).onERC1155Received(msg.sender, from, id, amount, data) ==
                    ERC1155TokenReceiver.onERC1155Received.selector,
            "UNSAFE_RECIPIENT"
        );
    }

    function safeBatchTransferFrom(
        address from,
        address to,
        uint256[] calldata ids,
        uint256[] calldata amounts,
        bytes calldata data
    ) public virtual {
        require(ids.length == amounts.length, "LENGTH_MISMATCH");

        require(msg.sender == from || isApprovedForAll[from][msg.sender], "NOT_AUTHORIZED");

        // Storing these outside the loop saves ~15 gas per iteration.
        uint256 id;
        uint256 amount;

        for (uint256 i = 0; i < ids.length; ) {
            id = ids[i];
            amount = amounts[i];

            balanceOf[from][id] -= amount;
            balanceOf[to][id] += amount;

            // An array can't have a total length
            // larger than the max uint256 value.
            unchecked {
                ++i;
            }
        }

        emit TransferBatch(msg.sender, from, to, ids, amounts);

        require(
            to.code.length == 0
                ? to != address(0)
                : ERC1155TokenReceiver(to).onERC1155BatchReceived(msg.sender, from, ids, amounts, data) ==
                    ERC1155TokenReceiver.onERC1155BatchReceived.selector,
            "UNSAFE_RECIPIENT"
        );
    }

    function balanceOfBatch(address[] calldata owners, uint256[] calldata ids)
        public
        view
        virtual
        returns (uint256[] memory balances)
    {
        require(owners.length == ids.length, "LENGTH_MISMATCH");

        balances = new uint256[](owners.length);

        // Unchecked because the only math done is incrementing
        // the array index counter which cannot possibly overflow.
        unchecked {
            for (uint256 i = 0; i < owners.length; ++i) {
                balances[i] = balanceOf[owners[i]][ids[i]];
            }
        }
    }

    /*//////////////////////////////////////////////////////////////
                              ERC165 LOGIC
    //////////////////////////////////////////////////////////////*/

    function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
        return
            interfaceId == 0x01ffc9a7 || // ERC165 Interface ID for ERC165
            interfaceId == 0xd9b67a26 || // ERC165 Interface ID for ERC1155
            interfaceId == 0x0e89341c; // ERC165 Interface ID for ERC1155MetadataURI
    }

    /*//////////////////////////////////////////////////////////////
                        INTERNAL MINT/BURN LOGIC
    //////////////////////////////////////////////////////////////*/

    function _mint(
        address to,
        uint256 id,
        uint256 amount,
        bytes memory data
    ) internal virtual {
        balanceOf[to][id] += amount;

        emit TransferSingle(msg.sender, address(0), to, id, amount);

        require(
            to.code.length == 0
                ? to != address(0)
                : ERC1155TokenReceiver(to).onERC1155Received(msg.sender, address(0), id, amount, data) ==
                    ERC1155TokenReceiver.onERC1155Received.selector,
            "UNSAFE_RECIPIENT"
        );
    }

    function _batchMint(
        address to,
        uint256[] memory ids,
        uint256[] memory amounts,
        bytes memory data
    ) internal virtual {
        uint256 idsLength = ids.length; // Saves MLOADs.

        require(idsLength == amounts.length, "LENGTH_MISMATCH");

        for (uint256 i = 0; i < idsLength; ) {
            balanceOf[to][ids[i]] += amounts[i];

            // An array can't have a total length
            // larger than the max uint256 value.
            unchecked {
                ++i;
            }
        }

        emit TransferBatch(msg.sender, address(0), to, ids, amounts);

        require(
            to.code.length == 0
                ? to != address(0)
                : ERC1155TokenReceiver(to).onERC1155BatchReceived(msg.sender, address(0), ids, amounts, data) ==
                    ERC1155TokenReceiver.onERC1155BatchReceived.selector,
            "UNSAFE_RECIPIENT"
        );
    }

    function _batchBurn(
        address from,
        uint256[] memory ids,
        uint256[] memory amounts
    ) internal virtual {
        uint256 idsLength = ids.length; // Saves MLOADs.

        require(idsLength == amounts.length, "LENGTH_MISMATCH");

        for (uint256 i = 0; i < idsLength; ) {
            balanceOf[from][ids[i]] -= amounts[i];

            // An array can't have a total length
            // larger than the max uint256 value.
            unchecked {
                ++i;
            }
        }

        emit TransferBatch(msg.sender, from, address(0), ids, amounts);
    }

    function _burn(
        address from,
        uint256 id,
        uint256 amount
    ) internal virtual {
        balanceOf[from][id] -= amount;

        emit TransferSingle(msg.sender, from, address(0), id, amount);
    }
}

/// @notice A generic interface for a contract which properly accepts ERC1155 tokens.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC1155.sol)
abstract contract ERC1155TokenReceiver {
    function onERC1155Received(
        address,
        address,
        uint256,
        uint256,
        bytes calldata
    ) external virtual returns (bytes4) {
        return ERC1155TokenReceiver.onERC1155Received.selector;
    }

    function onERC1155BatchReceived(
        address,
        address,
        uint256[] calldata,
        uint256[] calldata,
        bytes calldata
    ) external virtual returns (bytes4) {
        return ERC1155TokenReceiver.onERC1155BatchReceived.selector;
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

/// @notice Modern, minimalist, and gas efficient ERC-721 implementation.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC721.sol)
abstract contract ERC721 {
    /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/

    event Transfer(address indexed from, address indexed to, uint256 indexed id);

    event Approval(address indexed owner, address indexed spender, uint256 indexed id);

    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /*//////////////////////////////////////////////////////////////
                         METADATA STORAGE/LOGIC
    //////////////////////////////////////////////////////////////*/

    string public name;

    string public symbol;

    function tokenURI(uint256 id) public view virtual returns (string memory);

    /*//////////////////////////////////////////////////////////////
                      ERC721 BALANCE/OWNER STORAGE
    //////////////////////////////////////////////////////////////*/

    mapping(uint256 => address) internal _ownerOf;

    mapping(address => uint256) internal _balanceOf;

    function ownerOf(uint256 id) public view virtual returns (address owner) {
        require((owner = _ownerOf[id]) != address(0), "NOT_MINTED");
    }

    function balanceOf(address owner) public view virtual returns (uint256) {
        require(owner != address(0), "ZERO_ADDRESS");

        return _balanceOf[owner];
    }

    /*//////////////////////////////////////////////////////////////
                         ERC721 APPROVAL STORAGE
    //////////////////////////////////////////////////////////////*/

    mapping(uint256 => address) public getApproved;

    mapping(address => mapping(address => bool)) public isApprovedForAll;

    /*//////////////////////////////////////////////////////////////
                               CONSTRUCTOR
    //////////////////////////////////////////////////////////////*/

    constructor(string memory _name, string memory _symbol) {
        name = _name;
        symbol = _symbol;
    }

    /*//////////////////////////////////////////////////////////////
                              ERC721 LOGIC
    //////////////////////////////////////////////////////////////*/

    function approve(address spender, uint256 id) public virtual {
        address owner = _ownerOf[id];

        require(msg.sender == owner || isApprovedForAll[owner][msg.sender], "NOT_AUTHORIZED");

        getApproved[id] = spender;

        emit Approval(owner, spender, id);
    }

    function setApprovalForAll(address operator, bool approved) public virtual {
        isApprovedForAll[msg.sender][operator] = approved;

        emit ApprovalForAll(msg.sender, operator, approved);
    }

    function transferFrom(
        address from,
        address to,
        uint256 id
    ) public virtual {
        require(from == _ownerOf[id], "WRONG_FROM");

        require(to != address(0), "INVALID_RECIPIENT");

        require(
            msg.sender == from || isApprovedForAll[from][msg.sender] || msg.sender == getApproved[id],
            "NOT_AUTHORIZED"
        );

        // Underflow of the sender's balance is impossible because we check for
        // ownership above and the recipient's balance can't realistically overflow.
        unchecked {
            _balanceOf[from]--;

            _balanceOf[to]++;
        }

        _ownerOf[id] = to;

        delete getApproved[id];

        emit Transfer(from, to, id);
    }

    function safeTransferFrom(
        address from,
        address to,
        uint256 id
    ) public virtual {
        transferFrom(from, to, id);

        require(
            to.code.length == 0 ||
                ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
                ERC721TokenReceiver.onERC721Received.selector,
            "UNSAFE_RECIPIENT"
        );
    }

    function safeTransferFrom(
        address from,
        address to,
        uint256 id,
        bytes calldata data
    ) public virtual {
        transferFrom(from, to, id);

        require(
            to.code.length == 0 ||
                ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, data) ==
                ERC721TokenReceiver.onERC721Received.selector,
            "UNSAFE_RECIPIENT"
        );
    }

    /*//////////////////////////////////////////////////////////////
                              ERC165 LOGIC
    //////////////////////////////////////////////////////////////*/

    function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
        return
            interfaceId == 0x01ffc9a7 || // ERC165 Interface ID for ERC165
            interfaceId == 0x80ac58cd || // ERC165 Interface ID for ERC721
            interfaceId == 0x5b5e139f; // ERC165 Interface ID for ERC721Metadata
    }

    /*//////////////////////////////////////////////////////////////
                        INTERNAL MINT/BURN LOGIC
    //////////////////////////////////////////////////////////////*/

    function _mint(address to, uint256 id) internal virtual {
        require(to != address(0), "INVALID_RECIPIENT");

        require(_ownerOf[id] == address(0), "ALREADY_MINTED");

        // Counter overflow is incredibly unrealistic.
        unchecked {
            _balanceOf[to]++;
        }

        _ownerOf[id] = to;

        emit Transfer(address(0), to, id);
    }

    function _burn(uint256 id) internal virtual {
        address owner = _ownerOf[id];

        require(owner != address(0), "NOT_MINTED");

        // Ownership check above ensures no underflow.
        unchecked {
            _balanceOf[owner]--;
        }

        delete _ownerOf[id];

        delete getApproved[id];

        emit Transfer(owner, address(0), id);
    }

    /*//////////////////////////////////////////////////////////////
                        INTERNAL SAFE MINT LOGIC
    //////////////////////////////////////////////////////////////*/

    function _safeMint(address to, uint256 id) internal virtual {
        _mint(to, id);

        require(
            to.code.length == 0 ||
                ERC721TokenReceiver(to).onERC721Received(msg.sender, address(0), id, "") ==
                ERC721TokenReceiver.onERC721Received.selector,
            "UNSAFE_RECIPIENT"
        );
    }

    function _safeMint(
        address to,
        uint256 id,
        bytes memory data
    ) internal virtual {
        _mint(to, id);

        require(
            to.code.length == 0 ||
                ERC721TokenReceiver(to).onERC721Received(msg.sender, address(0), id, data) ==
                ERC721TokenReceiver.onERC721Received.selector,
            "UNSAFE_RECIPIENT"
        );
    }
}

/// @notice A generic interface for a contract which properly accepts ERC721 tokens.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC721.sol)
abstract contract ERC721TokenReceiver {
    function onERC721Received(
        address,
        address,
        uint256,
        bytes calldata
    ) external virtual returns (bytes4) {
        return ERC721TokenReceiver.onERC721Received.selector;
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.17;

address constant ADDRESS_ZERO = address(0);

library AddressUtils {
    function _isEmpty(address addr) internal pure returns (bool) {
        return (addr == ADDRESS_ZERO);
    }

    function _isNotEmpty(address addr) internal pure returns (bool) {
        return (addr != ADDRESS_ZERO);
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.17;

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

/// @title Oracle factory interface
interface IOracleFactory {
    function createOracle(bytes calldata data_) external returns (IOracle);
}

{
  "remappings": [
    "@uniswap/v3-core/=lib/splits-oracle/lib/v3-core/",
    "@uniswap/v3-periphery/=lib/v3-periphery/",
    "chainlink/=lib/splits-oracle/lib/chainlink/contracts/src/v0.8/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "forge-std/=lib/forge-std/src/",
    "solady/=lib/solady/src/",
    "solmate/=lib/solmate/src/",
    "splits-oracle/=lib/splits-oracle/src/",
    "splits-tests/=lib/splits-utils/test/",
    "splits-utils/=lib/splits-utils/src/",
    "v3-core/=lib/splits-oracle/lib/v3-core/contracts/",
    "v3-periphery/=lib/v3-periphery/contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 1000000
  },
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract SwapperFactory","name":"swapperFactory_","type":"address"},{"internalType":"contract ISwapRouter","name":"swapRouter_","type":"address"},{"internalType":"contract IWETH9","name":"weth9_","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"InsufficientFunds","type":"error"},{"inputs":[],"name":"Unauthorized","type":"error"},{"inputs":[{"internalType":"contract SwapperImpl","name":"swapper","type":"address"},{"components":[{"components":[{"components":[{"internalType":"address","name":"base","type":"address"},{"internalType":"address","name":"quote","type":"address"}],"internalType":"struct QuotePair","name":"quotePair","type":"tuple"},{"internalType":"uint128","name":"baseAmount","type":"uint128"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct QuoteParams[]","name":"quoteParams","type":"tuple[]"},{"components":[{"components":[{"internalType":"bytes","name":"path","type":"bytes"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMinimum","type":"uint256"}],"internalType":"struct ISwapRouter.ExactInputParams[]","name":"exactInputParams","type":"tuple[]"},{"internalType":"address","name":"excessRecipient","type":"address"}],"internalType":"struct UniV3Swap.FlashCallbackData","name":"flashCallbackData","type":"tuple"}],"internalType":"struct UniV3Swap.InitFlashParams","name":"params_","type":"tuple"}],"name":"initFlash","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"swapRouter","outputs":[{"internalType":"contract ISwapRouter","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"swapperFactory","outputs":[{"internalType":"contract SwapperFactory","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"tokenToBeneficiary_","type":"address"},{"internalType":"uint256","name":"amountToBeneficiary_","type":"uint256"},{"internalType":"bytes","name":"data_","type":"bytes"}],"name":"swapperFlashCallback","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"weth9","outputs":[{"internalType":"contract IWETH9","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]

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000000000000000000000000a244bbe019cf1ba177ee5a532250be2663fb55ca000000000000000000000000e592427a0aece92de3edee1f18e0157c05861564000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2

-----Decoded View---------------
Arg [0] : swapperFactory_ (address): 0xa244bbe019cf1BA177EE5A532250be2663Fb55cA
Arg [1] : swapRouter_ (address): 0xE592427A0AEce92De3Edee1F18E0157C05861564
Arg [2] : weth9_ (address): 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000a244bbe019cf1ba177ee5a532250be2663fb55ca
Arg [1] : 000000000000000000000000e592427a0aece92de3edee1f18e0157c05861564
Arg [2] : 000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2