// File: @openzeppelin/contracts/token/ERC20/extensions/draft-IERC20Permit.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

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



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/draft-IERC20Permit.sol";
import "../../../utils/Address.sol";

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

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

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

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

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

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

    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

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

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

// File: @openzeppelin/contracts/utils/Address.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 Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [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 Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(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: @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: contracts/Global/IConfigStructures.sol



// SPDX-License-Identifier: MIT
// Metadrop Contracts (v0.0.1)

/**
 *
 * @title IConfigStructures.sol. Interface for common config structures used accross the platform
 *
 * @author metadrop https://metadrop.com/
 *
 */

pragma solidity 0.8.19;

interface IConfigStructures {
  enum DropStatus {
    approved,
    deployed,
    cancelled
  }

  enum TemplateStatus {
    live,
    terminated
  }

  enum TokenAllocationMethod {
    sequential,
    random
  }

  // The current status of the mint:
  //   - notEnabled: This type of mint is not part of this drop
  //   - notYetOpen: This type of mint is part of the drop, but it hasn't started yet
  //   - open: it's ready for ya, get in there.
  //   - finished: been and gone.
  //   - unknown: theoretically impossible.
  enum MintStatus {
    notEnabled,
    notYetOpen,
    open,
    finished,
    unknown
  }

  struct SubListConfig {
    uint256 start;
    uint256 end;
    uint256 phaseMaxSupply;
  }

  struct PrimarySaleModuleInstance {
    address instanceAddress;
    string instanceDescription;
  }

  struct NFTModuleConfig {
    uint256 templateId;
    bytes configData;
  }

  struct PrimarySaleModuleConfig {
    uint256 templateId;
    bytes configData;
  }

  struct VestingModuleConfig {
    uint256 templateId;
    bytes configData;
  }

  struct RoyaltySplitterModuleConfig {
    uint256 templateId;
    bytes configData;
  }

  struct InLifeModuleConfig {
    uint256 templateId;
    bytes configData;
  }

  struct InLifeModules {
    InLifeModuleConfig[] modules;
  }

  struct NFTConfig {
    uint256 supply;
    uint256 mintingMethod;
    bytes32 name;
    bytes32 symbol;
    bytes32 dropId;
    bytes32 positionProof;
  }

  struct DropApproval {
    DropStatus status;
    uint32 lastChangedDate;
    address dropOwnerAddress;
    bytes32 configHash;
  }

  struct Template {
    TemplateStatus status;
    uint16 templateNumber;
    uint32 loadedDate;
    address payable templateAddress;
    string templateDescription;
  }

  struct NumericOverride {
    bool isSet;
    uint248 overrideValue;
  }
}

// File: contracts/RoyaltyPaymentSplitter/IRoyaltyPaymentSplitterByMetadrop.sol



// SPDX-License-Identifier: MIT
// Metadrop Contracts (v0.0.1)

/**
 *
 * @title IRoyaltyPaymentSplitterByMetadrop.sol. Interface for royalty module contract
 *
 * @author metadrop https://metadrop.com/
 *
 */
pragma solidity 0.8.19;

import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "../Global/IConfigStructures.sol";

interface IRoyaltyPaymentSplitterByMetadrop is IConfigStructures {
  /** ====================================================================================================================
   *                                                    ENUMS AND STRUCTS
   * =====================================================================================================================
   */
  struct RoyaltyPaymentSplitterConfig {
    address projectRoyaltyAddress;
    uint256 royaltyFromSalesInBasisPoints;
  }

  /** ====================================================================================================================
   *                                                        EVENTS
   * =====================================================================================================================
   */
  event PayeeAdded(address account, uint256 shares);
  event PaymentReleased(address to, uint256 amount);
  event ERC20PaymentReleased(IERC20 indexed token, address to, uint256 amount);
  event PaymentReceived(address from, uint256 amount);

  /** ====================================================================================================================
   *                                                        ERRORS
   * =====================================================================================================================
   */
  error AlreadyInitialised();

  /** ====================================================================================================================
   *                                                       FUNCTIONS
   * =====================================================================================================================
   */
  /** ____________________________________________________________________________________________________________________
   *                                                                                                         -->INITIALISE
   * @dev (function) initialiseRoyaltyPaymentSplitter  Initialise data on the royalty contract
   *
   * ---------------------------------------------------------------------------------------------------------------------
   * @param royaltyModule_                        Configuration object for this instance of vesting
   * ---------------------------------------------------------------------------------------------------------------------
   * @param platformTreasury_                     The address for payments to the platform
   * ---------------------------------------------------------------------------------------------------------------------
   * @param platformRoyaltyPercentInBasisPoints_  The basis point share for the platform
   * ---------------------------------------------------------------------------------------------------------------------
   * @return royaltyFromSalesInBasisPoints_       The royalty share from sales in basis points
   * ---------------------------------------------------------------------------------------------------------------------
   * _____________________________________________________________________________________________________________________
   */
  function initialiseRoyaltyPaymentSplitter(
    RoyaltySplitterModuleConfig calldata royaltyModule_,
    address platformTreasury_,
    uint256 platformRoyaltyPercentInBasisPoints_
  ) external returns (uint96 royaltyFromSalesInBasisPoints_);
}

// File: contracts/RoyaltyPaymentSplitter/RoyaltyPaymentSplitterByMetadrop.sol



// SPDX-License-Identifier: MIT
// Metadrop Contracts (v0.0.1)

/**
 *
 * @title RoyaltyPaymentSplitterByMetadrop.sol. OpenZepplin payment splitter with modifications to make cloneable
 *
 * @dev This contract allows to split Ether payments among a group of accounts. The sender does not need to be aware
 * that the Ether will be split in this way, since it is handled transparently by the contract.
 *
 * The split can be in equal parts or in any other arbitrary proportion. The way this is specified is by assigning each
 * account to a number of shares. Of all the Ether that this contract receives, each account will then be able to claim
 * an amount proportional to the percentage of total shares they were assigned. The distribution of shares is set at the
 * time of contract deployment and can't be updated thereafter.
 *
 * `PaymentSplitter` follows a _pull payment_ model. This means that payments are not automatically forwarded to the
 * accounts but kept in this contract, and the actual transfer is triggered as a separate step by calling the {release}
 * function.
 *
 * NOTE: This contract assumes that ERC20 tokens will behave similarly to native tokens (Ether). Rebasing tokens, and
 * tokens that apply fees during transfers, are likely to not be supported as expected. If in doubt, we encourage you
 * to run tests before sending real value to this contract.
 *
 * @author metadrop https://metadrop.com/
 *
 */

pragma solidity 0.8.19;

import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/Context.sol";
import "./IRoyaltyPaymentSplitterByMetadrop.sol";

contract RoyaltyPaymentSplitterByMetadrop is
  Context,
  IRoyaltyPaymentSplitterByMetadrop
{
  uint256 private constant ONE_HUNDRED_PERCENT_IN_BASIS_POINTS = 10000;

  uint256 private _totalShares;
  uint256 private _totalReleased;

  mapping(address => uint256) private _shares;
  mapping(address => uint256) private _released;
  address[] private _payees;

  mapping(IERC20 => uint256) private _erc20TotalReleased;
  mapping(IERC20 => mapping(address => uint256)) private _erc20Released;

  // Bool that controls initialisation and only allows it to occur ONCE. This is
  // needed as this contract is clonable, threfore the constructor is not called
  // on cloned instances. We setup state of this contract through the initialise
  // function.
  bool initialised;

  /** ====================================================================================================================
   *                                              CONSTRUCTOR AND INTIIALISE
   * =====================================================================================================================
   */
  /** ____________________________________________________________________________________________________________________
   *                                                                                                        -->CONSTRUCTOR
   * @dev constructor           The constructor is not called when the contract is cloned. In this
   *                            constructor we just setup default values and set the template contract to initialised.
   * _____________________________________________________________________________________________________________________
   */
  constructor() {
    initialised = true;
  }

  /** ____________________________________________________________________________________________________________________
   *                                                                                                         -->INITIALISE
   * @dev (function) initialiseRoyaltyPaymentSplitter  Initialise data on the royalty contract
   *
   * ---------------------------------------------------------------------------------------------------------------------
   * @param royaltyModule_                        Configuration object for this instance of vesting
   * ---------------------------------------------------------------------------------------------------------------------
   * @param platformTreasury_                     The address for payments to the platform
   * ---------------------------------------------------------------------------------------------------------------------
   * @param platformRoyaltyPercentInBasisPoints_  The basis point share for the platform
   * ---------------------------------------------------------------------------------------------------------------------
   * @return royaltyFromSalesInBasisPoints_       The total royalty percentage (i.e. project + platform)
   * ---------------------------------------------------------------------------------------------------------------------
   * _____________________________________________________________________________________________________________________
   */
  function initialiseRoyaltyPaymentSplitter(
    RoyaltySplitterModuleConfig calldata royaltyModule_,
    address platformTreasury_,
    uint256 platformRoyaltyPercentInBasisPoints_
  ) external returns (uint96 royaltyFromSalesInBasisPoints_) {
    if (initialised) revert AlreadyInitialised();

    // Decode the config:
    RoyaltyPaymentSplitterConfig memory royaltyConfig = abi.decode(
      royaltyModule_.configData,
      (RoyaltyPaymentSplitterConfig)
    );

    _addPayee(
      royaltyConfig.projectRoyaltyAddress,
      (ONE_HUNDRED_PERCENT_IN_BASIS_POINTS -
        platformRoyaltyPercentInBasisPoints_)
    );

    _addPayee(platformTreasury_, platformRoyaltyPercentInBasisPoints_);

    initialised = true;

    return (uint96(royaltyConfig.royaltyFromSalesInBasisPoints));
  }

  /**
   * @dev The Ether received will be logged with {PaymentReceived} events. Note that these events are not fully
   * reliable: it's possible for a contract to receive Ether without triggering this function. This only affects the
   * reliability of the events, and not the actual splitting of Ether.
   *
   * To learn more about this see the Solidity documentation for
   * https://solidity.readthedocs.io/en/latest/contracts.html#fallback-function[fallback
   * functions].
   */
  receive() external payable virtual {
    emit PaymentReceived(_msgSender(), msg.value);
  }

  /**
   * @dev Getter for the total shares held by payees.
   */
  function totalShares() public view returns (uint256) {
    return _totalShares;
  }

  /**
   * @dev Getter for the total amount of Ether already released.
   */
  function totalReleased() public view returns (uint256) {
    return _totalReleased;
  }

  /**
   * @dev Getter for the total amount of `token` already released. `token` should be the address of an IERC20
   * contract.
   */
  function totalReleased(IERC20 token) public view returns (uint256) {
    return _erc20TotalReleased[token];
  }

  /**
   * @dev Getter for the amount of shares held by an account.
   */
  function shares(address account) public view returns (uint256) {
    return _shares[account];
  }

  /**
   * @dev Getter for the amount of Ether already released to a payee.
   */
  function released(address account) public view returns (uint256) {
    return _released[account];
  }

  /**
   * @dev Getter for the amount of `token` tokens already released to a payee. `token` should be the address of an
   * IERC20 contract.
   */
  function released(IERC20 token, address account)
    public
    view
    returns (uint256)
  {
    return _erc20Released[token][account];
  }

  /**
   * @dev Getter for the address of the payee number `index`.
   */
  function payee(uint256 index) public view returns (address) {
    return _payees[index];
  }

  /**
   * @dev Getter for the amount of payee's releasable Ether.
   */
  function releasable(address account) public view returns (uint256) {
    uint256 totalReceived = address(this).balance + totalReleased();
    return _pendingPayment(account, totalReceived, released(account));
  }

  /**
   * @dev Getter for the amount of payee's releasable `token` tokens. `token` should be the address of an
   * IERC20 contract.
   */
  function releasable(IERC20 token, address account)
    public
    view
    returns (uint256)
  {
    uint256 totalReceived = token.balanceOf(address(this)) +
      totalReleased(token);
    return _pendingPayment(account, totalReceived, released(token, account));
  }

  /**
   * @dev Triggers a transfer to `account` of the amount of Ether they are owed, according to their percentage of the
   * total shares and their previous withdrawals.
   */
  function release(address payable account) public virtual {
    require(_shares[account] > 0, "PaymentSplitter: account has no shares");

    uint256 payment = releasable(account);

    require(payment != 0, "PaymentSplitter: account is not due payment");

    // _totalReleased is the sum of all values in _released.
    // If "_totalReleased += payment" does not overflow, then "_released[account] += payment" cannot overflow.
    _totalReleased += payment;
    unchecked {
      _released[account] += payment;
    }

    Address.sendValue(account, payment);
    emit PaymentReleased(account, payment);
  }

  /**
   * @dev Triggers a transfer to `account` of the amount of `token` tokens they are owed, according to their
   * percentage of the total shares and their previous withdrawals. `token` must be the address of an IERC20
   * contract.
   */
  function release(IERC20 token, address account) public virtual {
    require(_shares[account] > 0, "PaymentSplitter: account has no shares");

    uint256 payment = releasable(token, account);

    require(payment != 0, "PaymentSplitter: account is not due payment");

    // _erc20TotalReleased[token] is the sum of all values in _erc20Released[token].
    // If "_erc20TotalReleased[token] += payment" does not overflow, then "_erc20Released[token][account] += payment"
    // cannot overflow.
    _erc20TotalReleased[token] += payment;
    unchecked {
      _erc20Released[token][account] += payment;
    }

    SafeERC20.safeTransfer(token, account, payment);
    emit ERC20PaymentReleased(token, account, payment);
  }

  /**
   * @dev internal logic for computing the pending payment of an `account` given the token historical balances and
   * already released amounts.
   */
  function _pendingPayment(
    address account,
    uint256 totalReceived,
    uint256 alreadyReleased
  ) private view returns (uint256) {
    return (totalReceived * _shares[account]) / _totalShares - alreadyReleased;
  }

  /**
   * @dev Add a new payee to the contract.
   * @param account The address of the payee to add.
   * @param shares_ The number of shares owned by the payee.
   */
  function _addPayee(address account, uint256 shares_) private {
    require(
      account != address(0),
      "PaymentSplitter: account is the zero address"
    );
    require(shares_ > 0, "PaymentSplitter: shares are 0");
    require(
      _shares[account] == 0,
      "PaymentSplitter: account already has shares"
    );

    _payees.push(account);
    _shares[account] = shares_;
    _totalShares = _totalShares + shares_;
    emit PayeeAdded(account, shares_);
  }
}