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



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
        }
        _balances[to] += amount;

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

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



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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

// File: node_modules/@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// File: node_modules/@openzeppelin/contracts/token/ERC721/IERC721.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);
}

// File: node_modules/@openzeppelin/contracts/utils/Context.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// File: node_modules/@openzeppelin/contracts/utils/introspection/IERC165.sol



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

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// File: src/LiquidSplit.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;

import "./lib/SplitHelpers.sol";

contract LiquidSplit is SplitHelpers {
    constructor(address _nftContractAddress, uint32[] memory _tokenIds)
        SplitHelpers(_nftContractAddress, _tokenIds)
    {}

    /// @notice This allows this contract to receive native currency funds from other contracts
    /// Uses event logging for UI reasons.
    receive() external payable {
        emit FundsReceived(msg.sender, msg.value);
    }

    /// @notice distributes ETH to Liquid Split NFT holders
    function withdraw() external {
        (
            address[] memory recipients,
            uint32[] memory percentAllocations
        ) = getRecipientsAndAllocations();
        // atomically deposit funds into split, update recipients to reflect current supercharged NFT holders,
        // and distribute
        payoutSplit.transfer(address(this).balance);
        splitMain.updateAndDistributeETH(
            payoutSplit,
            recipients,
            percentAllocations,
            0,
            address(0)
        );
    }
}

// File: src/interfaces/ISplitMain.sol



// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.10;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

/**
 * @title ISplitMain
 * @author 0xSplits <will@0xSplits.xyz>
 */
interface ISplitMain {
    /**
     * FUNCTIONS
     */

    function walletImplementation() external returns (address);

    function createSplit(
        address[] calldata accounts,
        uint32[] calldata percentAllocations,
        uint32 distributorFee,
        address controller
    )
        external
        returns (address);

    function predictImmutableSplitAddress(
        address[] calldata accounts,
        uint32[] calldata percentAllocations,
        uint32 distributorFee
    )
        external
        view
        returns (address);

    function updateSplit(
        address split,
        address[] calldata accounts,
        uint32[] calldata percentAllocations,
        uint32 distributorFee
    )
        external;

    function transferControl(address split, address newController) external;

    function cancelControlTransfer(address split) external;

    function acceptControl(address split) external;

    function makeSplitImmutable(address split) external;

    function distributeETH(
        address split,
        address[] calldata accounts,
        uint32[] calldata percentAllocations,
        uint32 distributorFee,
        address distributorAddress
    )
        external;

    function updateAndDistributeETH(
        address split,
        address[] calldata accounts,
        uint32[] calldata percentAllocations,
        uint32 distributorFee,
        address distributorAddress
    )
        external;

    function distributeERC20(
        address split,
        ERC20 token,
        address[] calldata accounts,
        uint32[] calldata percentAllocations,
        uint32 distributorFee,
        address distributorAddress
    )
        external;

    function updateAndDistributeERC20(
        address split,
        ERC20 token,
        address[] calldata accounts,
        uint32[] calldata percentAllocations,
        uint32 distributorFee,
        address distributorAddress
    )
        external;

    function withdraw(address account, uint256 withdrawETH, ERC20[] calldata tokens) external;

    /**
     * EVENTS
     */

    /**
     * @notice emitted after each successful split creation
     * @param split Address of the created split
     */
    event CreateSplit(address indexed split);

    /**
     * @notice emitted after each successful split update
     * @param split Address of the updated split
     */
    event UpdateSplit(address indexed split);

    /**
     * @notice emitted after each initiated split control transfer
     * @param split Address of the split control transfer was initiated for
     * @param newPotentialController Address of the split's new potential controller
     */
    event InitiateControlTransfer(address indexed split, address indexed newPotentialController);

    /**
     * @notice emitted after each canceled split control transfer
     * @param split Address of the split control transfer was canceled for
     */
    event CancelControlTransfer(address indexed split);

    /**
     * @notice emitted after each successful split control transfer
     * @param split Address of the split control was transferred for
     * @param previousController Address of the split's previous controller
     * @param newController Address of the split's new controller
     */
    event ControlTransfer(address indexed split, address indexed previousController, address indexed newController);

    /**
     * @notice emitted after each successful ETH balance split
     * @param split Address of the split that distributed its balance
     * @param amount Amount of ETH distributed
     * @param distributorAddress Address to credit distributor fee to
     */
    event DistributeETH(address indexed split, uint256 amount, address indexed distributorAddress);

    /**
     * @notice emitted after each successful ERC20 balance split
     * @param split Address of the split that distributed its balance
     * @param token Address of ERC20 distributed
     * @param amount Amount of ERC20 distributed
     * @param distributorAddress Address to credit distributor fee to
     */
    event DistributeERC20(
        address indexed split, ERC20 indexed token, uint256 amount, address indexed distributorAddress
    );

    /**
     * @notice emitted after each successful withdrawal
     * @param account Address that funds were withdrawn to
     * @param ethAmount Amount of ETH withdrawn
     * @param tokens Addresses of ERC20s withdrawn
     * @param tokenAmounts Amounts of corresponding ERC20s withdrawn
     */
    event Withdrawal(address indexed account, uint256 ethAmount, ERC20[] tokens, uint256[] tokenAmounts);
}

// File: src/lib/PureHelpers.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;

import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "../interfaces/ISplitMain.sol";

contract PureHelpers {
    /// @notice Returns sorted array of accounts for 0xSplits.
    function _sortAddresses(address[] memory addresses) internal pure returns (address[] memory) {
        for (uint256 i = addresses.length - 1; i > 0;) {
            for (uint256 j = 0; j < i;) {
                if (addresses[i] < addresses[j]) {
                    (addresses[i], addresses[j]) = (addresses[j], addresses[i]);
                }
                unchecked {
                    ++j;
                }
            }
            unchecked {
                --i;
            }
        }

        return addresses;
    }

    /// @notice Returns sorted array of accounts for 0xSplits.
    /// @dev sortedAccounts _must_ be sorted for this to work properly
    function _uniqueAddresses(address[] memory sortedAccounts) internal pure returns (address[] memory) {
        uint32 numUniqRecipients = _countUniqueRecipients(sortedAccounts);
        address[] memory _uniqueRecipients = new address[](numUniqRecipients);
        _uniqueRecipients[0] = sortedAccounts[0];
        uint32 j = 1;
        for (uint32 i = 1; i < numUniqRecipients;) {
            while (_uniqueRecipients[i - 1] == sortedAccounts[j]) {
                unchecked {
                    ++j;
                }
            }
            _uniqueRecipients[i] = sortedAccounts[j];
            unchecked {
                ++i;
                ++j;
            }
        }
        return _uniqueRecipients;
    }

    /// @notice Returns number of unique recipients.
    /// @dev sortedAccounts _must_ be sorted for this to work properly
    function _countUniqueRecipients(address[] memory sortedAccounts) internal pure returns (uint32) {
        uint32 numRecipients = uint32(sortedAccounts.length);
        uint32 numUniqRecipients = 1;
        address lastRecipient = sortedAccounts[0];
        for (uint256 i = 1; i < numRecipients;) {
            if (sortedAccounts[i] != lastRecipient) {
                unchecked {
                    ++numUniqRecipients;
                    lastRecipient = sortedAccounts[i];
                }
            }
            unchecked {
                ++i;
            }
        }

        return numUniqRecipients;
    }
}

// File: src/lib/SplitHelpers.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;

import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "../interfaces/ISplitMain.sol";
import "./PureHelpers.sol";

contract SplitHelpers is PureHelpers {
    /// @notice 0xSplits address for split.
    address payable public immutable payoutSplit;
    /// @notice 0xSplits address for updating & distributing split.
    ISplitMain public splitMain;
    /// @notice address of ERC721 contract with controlling tokens.
    IERC721 public nftContract;
    /// @notice array of token holders as split recipients.
    uint32[] public tokenIds;
    /// @notice constant to scale uints into percentages (1e6 == 100%)
    uint32 public constant PERCENTAGE_SCALE = 1e6;

    /// @notice Funds have been received. activate liquidity.
    event FundsReceived(address indexed source, uint256 amount);

    constructor(address _nftContractAddress, uint32[] memory _tokenIds) {
        /// Establish NFT holder contract
        nftContract = IERC721(_nftContractAddress);
        /// Establish tokenIds from NFT contract for split recipients.
        tokenIds = _tokenIds;
        /// Establish interface to splits contract
        splitMain = ISplitMain(0x2ed6c4B5dA6378c7897AC67Ba9e43102Feb694EE);
        // create dummy mutable split with this contract as controller;
        // recipients & distributorFee will be updated on first payout
        address[] memory recipients = new address[](2);
        recipients[0] = address(0);
        recipients[1] = address(1);
        uint32[] memory percentAllocations = new uint32[](2);
        percentAllocations[0] = uint32(500000);
        percentAllocations[1] = uint32(500000);
        payoutSplit = payable(splitMain.createSplit(recipients, percentAllocations, 0, address(this)));
    }

    /// @notice Returns array of all current token holders.
    function getAllHolders() public view returns (address[] memory holders) {
        holders = new address[](tokenIds.length);
        uint256 loopLength = holders.length;
        for (uint256 i = 0; i < loopLength;) {
            holders[i] = nftContract.ownerOf(tokenIds[i]);
            unchecked {
                ++i;
            }
        }
    }

    /// @notice Returns array of sorted token holders.
    function getSortedHolders() public view returns (address[] memory holders) {
        holders = _sortAddresses(getAllHolders());
    }

    /// @notice Returns array of recipients and array of percent allocations for current liquid split.
    function getRecipientsAndAllocations()
        public
        view
        returns (address[] memory recipients, uint32[] memory percentAllocations)
    {
        address[] memory sortedHolders = getSortedHolders();
        uint256 numUniqRecipients = _countUniqueRecipients(sortedHolders);

        recipients = new address[](numUniqRecipients);
        percentAllocations = new uint32[](numUniqRecipients);
        uint32 percentPerToken = uint32(PERCENTAGE_SCALE / sortedHolders.length);
        uint256 lastRecipient = numUniqRecipients - 1;
        uint256 j = 0;
        for (uint256 i = 0; i < lastRecipient;) {
            recipients[i] = sortedHolders[j];
            while (recipients[i] == sortedHolders[j]) {
                unchecked {
                    percentAllocations[i] += percentPerToken;
                    ++j;
                }
            }
            unchecked {
                ++i;
            }
        }
        recipients[lastRecipient] = sortedHolders[j];
        unchecked {
            percentAllocations[lastRecipient] = PERCENTAGE_SCALE - uint32(percentPerToken * j);
        }
    }
}