// File: @openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.2;

import "../../utils/AddressUpgradeable.sol";

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts.
     *
     * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a
     * constructor.
     *
     * Emits an {Initialized} event.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _initialized = 1;
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * A reinitializer may be used after the original initialization step. This is essential to configure modules that
     * are added through upgrades and that require initialization.
     *
     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
     * cannot be nested. If one is invoked in the context of another, execution will revert.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     *
     * WARNING: setting the version to 255 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _initialized = version;
        _initializing = true;
        _;
        _initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     *
     * Emits an {Initialized} event the first time it is successfully executed.
     */
    function _disableInitializers() internal virtual {
        require(!_initializing, "Initializable: contract is initializing");
        if (_initialized < type(uint8).max) {
            _initialized = type(uint8).max;
            emit Initialized(type(uint8).max);
        }
    }

    /**
     * @dev Internal function that returns the initialized version. Returns `_initialized`
     */
    function _getInitializedVersion() internal view returns (uint8) {
        return _initialized;
    }

    /**
     * @dev Internal function that returns the initialized version. Returns `_initializing`
     */
    function _isInitializing() internal view returns (bool) {
        return _initializing;
    }
}

// File: @openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// File: src/backend/contracts/oneArtist/evolving/fixedPrices/splitter/Buffer.sol



//SPDX-License-Identifier: MIT
pragma solidity 0.8.16;
//-- _____ ______    ________   ________    _________   ________   ________   _______      
//--|\   _ \  _   \ |\   __  \ |\   ___  \ |\___   ___\|\   __  \ |\   ____\ |\  ___ \     
//--\ \  \\\__\ \  \\ \  \|\  \\ \  \\ \  \\|___ \  \_|\ \  \|\  \\ \  \___| \ \   __/|    
//-- \ \  \\|__| \  \\ \  \\\  \\ \  \\ \  \    \ \  \  \ \   __  \\ \  \  ___\ \  \_|/__  
//--  \ \  \    \ \  \\ \  \\\  \\ \  \\ \  \    \ \  \  \ \  \ \  \\ \  \|\  \\ \  \_|\ \ 
//--   \ \__\    \ \__\\ \_______\\ \__\\ \__\    \ \__\  \ \__\ \__\\ \_______\\ \_______\
//--    \|__|     \|__| \|_______| \|__| \|__|     \|__|   \|__|\|__| \|_______| \|_______|
//--                                                                                       
//-- 
//-- Montage.io   
//Montage NFT payment splitter contract for evolving collections - single artist

import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";

interface NFTContract {
    function balanceOf(address owner) external view returns (uint256 balance);
    function getTotalSupply() external view returns (uint256);
}

contract Buffer is Initializable {

    NFTContract private _nftContract;

    event PaymentWithdrawn(address indexed member, uint256 indexed amount);
    event PaymentRecieved (address indexed sender, uint256 rtype, uint256 indexed amount);
    error TransferFailed();

    modifier onlyOwner() {
        require(owner == msg.sender, "Caller is not the owner.");
        _;
    }
    modifier whenNotPaused() {
        require(!paused, "Pausable: paused");
        _;
    }
    modifier onlyOwnerOrAdmin() {
         require(msg.sender == owner || msg.sender == admin, "Ownable: caller is not authorized");
        _;
    }

    struct Pie {
        uint256 coreTeamPerc;
        uint256 allHoldersPerc;
        uint256 montagePerc;
        uint256 ethBalance;
        uint256 totalClaimed;
        mapping(address => uint256) earningsClaimed;
        mapping(address => uint256) donationsClaimed;
    }

    mapping(address => uint256) coreTeamPercents;
    Pie public mint;
    Pie public sales;

    bool public paused;
    address public owner;
    address public admin;
    address immutable montage = 0xE4068ba8805e307f0bC129ddE8c0E25A46AE583f;
    

    function initialize(address _owner) public payable initializer {
        owner = _owner;
    }

    receive() external payable {
        bool isMint = msg.sender == address(_nftContract);
        uint256 rType;
        uint256 montageFee;
        if (isMint) {
            rType = 1; // mint
            montageFee = msg.value * mint.montagePerc / 10000;
            mint.ethBalance += msg.value;
            if (montageFee > 0) {
                mint.ethBalance -= montageFee;
                mint.totalClaimed += montageFee;
                mint.earningsClaimed[montage] += montageFee;
            }
        } else {
            rType = 2; // sales
            montageFee = msg.value * sales.montagePerc / 10000;
            sales.ethBalance += msg.value;
            if (montageFee > 0) {
                sales.ethBalance -= montageFee;
                sales.totalClaimed += montageFee;
                sales.earningsClaimed[montage] += montageFee;
            }
        }
        if (montageFee > 0) {
            _transfer(montage, montageFee);
        }
        emit PaymentRecieved(msg.sender, rType, msg.value);
    }

    function setPaused(bool _paused) public onlyOwnerOrAdmin {
        paused = _paused;
    }

    function setAdmin(address _admin) external onlyOwner {
        admin = _admin;
    }

    function viewTotalWithdrawn(address member) external view returns(uint256) {
        return mint.earningsClaimed[member] + sales.earningsClaimed[member];
    }

    function viewTotalDonated(address member) external view returns(uint256) {
        return mint.donationsClaimed[member] + sales.donationsClaimed[member];
    }

    function setPercentsAndAddCoreTeam(
        uint256[] calldata values,
        address[] calldata coreTeamAddresses,
        uint256[] calldata c_teamPercs
    ) external payable onlyOwnerOrAdmin {
        require(values.length == 10, "There must be 10 uint256 values for the percentages");
        require(sum(values) == 20000, "Sum of values arg must be 20000 BPS");
        sales.coreTeamPerc = values[0];
        // sales.allArtistsPerc = values[1];
        // sales.singleArtistPerc = values[2];
        sales.allHoldersPerc = values[3];
        sales.montagePerc = values[4];
        mint.coreTeamPerc = values[5];
        // mint.allArtistsPerc = values[6];
        // mint.singleArtistPerc = values[7];
        mint.allHoldersPerc = values[8];
        mint.montagePerc = values[9];

        if (coreTeamAddresses.length > 0) {
            require(coreTeamAddresses.length == c_teamPercs.length, "Each team member needs a share % in BPS format");
            require(sum(c_teamPercs) == 10000, "Sum of core team percents must be 10000 BPS");
            for (uint i; i < coreTeamAddresses.length; i++) {
                coreTeamPercents[coreTeamAddresses[i]] = c_teamPercs[i];
            }
        }
    }

    function setNftAddress(address nft) external onlyOwnerOrAdmin {
        _nftContract = NFTContract(nft);
    }

    function viewDonationAmt(address member) external view returns(uint256) {
        return getDonationPayoutFrom(member, mint) + getDonationPayoutFrom(member, sales);
    }
    function viewEarnings(address member) external view returns(uint256) {
        return getEarningsPayoutFrom(member, mint) + getEarningsPayoutFrom(member, sales);
    }    

	function withdraw() external whenNotPaused {
        address member = msg.sender;
        uint256 mintPayout = getEarningsPayoutFrom(member, mint);
        uint256 salesPayout = getEarningsPayoutFrom(member, sales);
        uint256 payout = mintPayout + salesPayout;
        require(payout > 0, "Insufficient balance.");
        mint.ethBalance -= mintPayout;
        mint.earningsClaimed[member] += mintPayout;
        mint.totalClaimed += mintPayout;
        sales.ethBalance -= salesPayout;
        sales.earningsClaimed[member] += salesPayout;
        sales.totalClaimed += salesPayout;
        _transfer(member, payout);
        emit PaymentWithdrawn(member, payout);
    }
    function holderDonate(address payable donateTo) external whenNotPaused {
        address member = msg.sender;
        uint256 mintPayout = getDonationPayoutFrom(member, mint);
        uint256 salesPayout = getDonationPayoutFrom(member, sales);
        uint256 payout = mintPayout + salesPayout;
        require(payout > 0, "Insufficient balance.");
        mint.ethBalance -= mintPayout;
        mint.donationsClaimed[member] += mintPayout;
        mint.totalClaimed += mintPayout;
        sales.ethBalance -= salesPayout;
        sales.donationsClaimed[member] += salesPayout;
        sales.totalClaimed += salesPayout;
        _transfer(donateTo, payout);
        emit PaymentWithdrawn(member, payout);
    }		

    function getEarningsPayoutFrom(address member, Pie storage pie) internal view returns(uint256) {
        uint256 claimed = pie.earningsClaimed[member];
        uint256 claimable = ((pie.ethBalance + pie.totalClaimed) * pie.coreTeamPerc) / 10000;
        uint256 memberShare = (claimable * coreTeamPercents[member]) / 10000;
        uint256 payout = memberShare > claimed ? memberShare - claimed : 0;
        return payout;
    }

    function getDonationPayoutFrom(address member, Pie storage pie) internal view returns(uint256) {
        uint256 claimable = ((pie.ethBalance + pie.totalClaimed) * pie.allHoldersPerc) / 10000;
        uint256 totalMinted = _nftContract.getTotalSupply() - 1;
        uint256 memberShare = totalMinted > 0 ? (claimable * _nftContract.balanceOf(member)) / totalMinted : 0;
        uint256 claimed = pie.donationsClaimed[member];
        uint256 payout = memberShare > claimed ? memberShare - claimed : 0;
        return payout;
    }

    function sum(uint256[] memory values) internal pure returns (uint256 result) {
        for (uint i = 0; i < values.length; i++) {
            result += values[i];
        }
    }

    // adopted from https://github.com/lexDAO/Kali/blob/main/contracts/libraries/SafeTransferLib.sol
    function _transfer(address to, uint256 amount) internal {
        bool callStatus;
        assembly {
            callStatus := call(gas(), to, amount, 0, 0, 0, 0)
        }
        if (!callStatus) revert TransferFailed();
    }
}