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// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

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

import "../abstract/GNSAddressStore.sol";

import "../../interfaces/libraries/IReferralsUtils.sol";

import "../../libraries/ReferralsUtils.sol";

/**
 * @dev Facet #2: Referral system
 */
contract GNSReferrals is GNSAddressStore, IReferralsUtils {
    // Initialization

    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() {
        _disableInitializers();
    }

    /// @inheritdoc IReferralsUtils
    function initializeReferrals(
        uint256 _allyFeeP,
        uint256 _startReferrerFeeP,
        uint256 _targetVolumeUsd
    ) external reinitializer(3) {
        ReferralsUtils.initializeReferrals(_allyFeeP, _startReferrerFeeP, _targetVolumeUsd);
    }

    // Management Setters

    /// @inheritdoc IReferralsUtils
    function updateAllyFeeP(uint256 _value) external onlyRole(Role.GOV) {
        ReferralsUtils.updateAllyFeeP(_value);
    }

    /// @inheritdoc IReferralsUtils
    function updateStartReferrerFeeP(uint256 _value) external onlyRole(Role.GOV) {
        ReferralsUtils.updateStartReferrerFeeP(_value);
    }

    /// @inheritdoc IReferralsUtils
    function updateReferralsTargetVolumeUsd(uint256 _value) external onlyRole(Role.GOV) {
        ReferralsUtils.updateReferralsTargetVolumeUsd(_value);
    }

    /// @inheritdoc IReferralsUtils
    function whitelistAllies(address[] calldata _allies) external onlyRole(Role.GOV) {
        ReferralsUtils.whitelistAllies(_allies);
    }

    /// @inheritdoc IReferralsUtils
    function unwhitelistAllies(address[] calldata _allies) external onlyRole(Role.GOV) {
        ReferralsUtils.unwhitelistAllies(_allies);
    }

    /// @inheritdoc IReferralsUtils
    function whitelistReferrers(address[] calldata _referrers, address[] calldata _allies) external onlyRole(Role.GOV) {
        ReferralsUtils.whitelistReferrers(_referrers, _allies);
    }

    /// @inheritdoc IReferralsUtils
    function unwhitelistReferrers(address[] calldata _referrers) external onlyRole(Role.GOV) {
        ReferralsUtils.unwhitelistReferrers(_referrers);
    }

    // Interactions

    /// @inheritdoc IReferralsUtils
    function registerPotentialReferrer(address _trader, address _referrer) external virtual onlySelf {
        ReferralsUtils.registerPotentialReferrer(_trader, _referrer);
    }

    /// @inheritdoc IReferralsUtils
    function distributeReferralReward(
        address _trader,
        uint256 _volumeUsd,
        uint256 _referrerFeeUsd,
        uint256 _gnsPriceUsd
    ) external virtual onlySelf {
        return ReferralsUtils.distributeReferralReward(_trader, _volumeUsd, _referrerFeeUsd, _gnsPriceUsd);
    }

    /// @inheritdoc IReferralsUtils
    function claimAllyRewards() external {
        ReferralsUtils.claimAllyRewards();
    }

    /// @inheritdoc IReferralsUtils
    function claimReferrerRewards() external {
        ReferralsUtils.claimReferrerRewards();
    }

    // Getters

    /// @inheritdoc IReferralsUtils
    function getReferrerFeeProgressP(address _referrer) external view returns (uint256) {
        return ReferralsUtils.getReferrerFeeProgressP(_referrer);
    }

    /// @inheritdoc IReferralsUtils
    function getTraderLastReferrer(address _trader) external view returns (address) {
        return ReferralsUtils.getTraderLastReferrer(_trader);
    }

    /// @inheritdoc IReferralsUtils
    function getTraderActiveReferrer(address _trader) external view returns (address) {
        return ReferralsUtils.getTraderActiveReferrer(_trader);
    }

    /// @inheritdoc IReferralsUtils
    function getReferrersReferred(address _ally) external view returns (address[] memory) {
        return ReferralsUtils.getReferrersReferred(_ally);
    }

    /// @inheritdoc IReferralsUtils
    function getTradersReferred(address _referrer) external view returns (address[] memory) {
        return ReferralsUtils.getTradersReferred(_referrer);
    }

    /// @inheritdoc IReferralsUtils
    function getReferralsAllyFeeP() external view returns (uint256) {
        return ReferralsUtils.getReferralsAllyFeeP();
    }

    /// @inheritdoc IReferralsUtils
    function getReferralsStartReferrerFeeP() external view returns (uint256) {
        return ReferralsUtils.getReferralsStartReferrerFeeP();
    }

    /// @inheritdoc IReferralsUtils
    function getReferralsTargetVolumeUsd() external view returns (uint256) {
        return ReferralsUtils.getReferralsTargetVolumeUsd();
    }

    /// @inheritdoc IReferralsUtils
    function getAllyDetails(address _ally) external view returns (AllyDetails memory) {
        return ReferralsUtils.getAllyDetails(_ally);
    }

    /// @inheritdoc IReferralsUtils
    function getReferrerDetails(address _referrer) external view returns (ReferrerDetails memory) {
        return ReferralsUtils.getReferrerDetails(_referrer);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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]
 * ```solidity
 * 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 Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint8) {
        return _initialized;
    }

    /**
     * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
     */
    function _isInitializing() internal view returns (bool) {
        return _initializing;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [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://consensys.net/diligence/blog/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/v0.8.0/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);
        }
    }
}

// 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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/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.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
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].
     *
     * CAUTION: See Security Considerations above.
     */
    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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/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;

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

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

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    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");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);

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

    /**
     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
     * Revert on invalid signature.
     */
    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");
        require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation 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).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // 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 cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return
            success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [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://consensys.net/diligence/blog/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/v0.8.0/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);
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

import {Initializable} from "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";

import "../../interfaces/IGNSAddressStore.sol";

/**
 * @dev Proxy base for the diamond and its facet contracts to store addresses and manage access control
 */
abstract contract GNSAddressStore is Initializable, IGNSAddressStore {
    AddressStore private addressStore;

    /// @inheritdoc IGNSAddressStore
    function initialize(address _govTimelock) external initializer {
        if (_govTimelock == address(0)) {
            revert IGeneralErrors.InitError();
        }

        _setRole(_govTimelock, Role.GOV_TIMELOCK, true);
    }

    // Addresses

    /// @inheritdoc IGNSAddressStore
    function getAddresses() external view returns (Addresses memory) {
        return addressStore.globalAddresses;
    }

    // Roles

    /// @inheritdoc IGNSAddressStore
    function hasRole(address _account, Role _role) public view returns (bool) {
        return addressStore.accessControl[_account][_role];
    }

    /// @inheritdoc IGNSAddressStore
    function hasRoles(address _account, Role _roleA, Role _roleB) public view returns (bool) {
        return addressStore.accessControl[_account][_roleA] || addressStore.accessControl[_account][_roleB];
    }

    /**
     * @dev Update role for account
     * @param _account account to update
     * @param _role role to set
     * @param _value true if allowed, false if not
     */
    function _setRole(address _account, Role _role, bool _value) internal {
        addressStore.accessControl[_account][_role] = _value;
        emit AccessControlUpdated(_account, _role, _value);
    }

    /// @inheritdoc IGNSAddressStore
    function setRoles(
        address[] calldata _accounts,
        Role[] calldata _roles,
        bool[] calldata _values
    ) external onlyRole(Role.GOV_TIMELOCK) {
        if (_accounts.length != _roles.length || _accounts.length != _values.length) {
            revert IGeneralErrors.InvalidInputLength();
        }

        for (uint256 i = 0; i < _accounts.length; ++i) {
            if (_roles[i] == Role.GOV_TIMELOCK && _accounts[i] == msg.sender) {
                revert NotAllowed();
            }

            _setRole(_accounts[i], _roles[i], _values[i]);
        }
    }

    /**
     * @dev Reverts if caller does not have role
     * @param _role role to enforce
     */
    function _enforceRole(Role _role) internal view {
        if (!hasRole(msg.sender, _role)) {
            revert WrongAccess();
        }
    }

    /**
     * @dev Reverts if caller does not have at least one of the two roles
     * @param _roleA role to enforce
     * @param _roleB role to enforce
     */
    function _enforceRoles(Role _roleA, Role _roleB) internal view {
        if (!hasRoles(msg.sender, _roleA, _roleB)) {
            revert WrongAccess();
        }
    }

    /**
     * @dev Reverts if caller does not have role
     */
    modifier onlyRole(Role _role) {
        _enforceRole(_role);
        _;
    }

    /**
     * @dev Reverts if caller does not have either of the roles
     */
    modifier onlyRoles(Role _roleA, Role _roleB) {
        _enforceRoles(_roleA, _roleB);
        _;
    }

    /**
     * @dev Reverts if caller isn't this same contract (facets calling other facets)
     */
    modifier onlySelf() {
        if (msg.sender != address(this)) {
            revert WrongAccess();
        }
        _;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";

/**
 * @dev Interface for ERC20 tokens
 */
interface IERC20 is IERC20Metadata {
    function burn(address, uint256) external;

    function mint(address, uint256) external;

    function hasRole(bytes32, address) external view returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

/**
 * @dev Interface for errors potentially used in all libraries (general names)
 */
interface IGeneralErrors {
    error InitError();
    error InvalidAddresses();
    error InvalidAddress();
    error InvalidInputLength();
    error InvalidCollateralIndex();
    error WrongParams();
    error WrongLength();
    error WrongOrder();
    error WrongIndex();
    error BlockOrder();
    error Overflow();
    error ZeroAddress();
    error ZeroValue();
    error AlreadyExists();
    error DoesntExist();
    error Paused();
    error BelowMin();
    error AboveMax();
    error NotAuthorized();
    error WrongTradeType();
    error WrongOrderType();
    error InsufficientBalance();
    error UnsupportedChain();
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

import "./types/IAddressStore.sol";
import "./IGeneralErrors.sol";

/**
 * @dev Interface for AddressStoreUtils library
 */
interface IGNSAddressStore is IAddressStore, IGeneralErrors {
    /**
     * @dev Initializes address store facet
     * @param _rolesManager roles manager address
     */
    function initialize(address _rolesManager) external;

    /**
     * @dev Returns addresses current values
     */
    function getAddresses() external view returns (Addresses memory);

    /**
     * @dev Returns whether an account has been granted a particular role
     * @param _account account address to check
     * @param _role role to check
     */
    function hasRole(address _account, Role _role) external view returns (bool);

    /**
     * @dev Returns whether an account has been granted at least one of two roles
     * @param _account address to check
     * @param _roleA first role to check
     * @param _roleB second role to check
     */
    function hasRoles(address _account, Role _roleA, Role _roleB) external view returns (bool);

    /**
     * @dev Updates access control for a list of accounts
     * @param _accounts accounts addresses to update
     * @param _roles corresponding roles to update
     * @param _values corresponding new values to set
     */
    function setRoles(address[] calldata _accounts, Role[] calldata _roles, bool[] calldata _values) external;

    /**
     * @dev Emitted when addresses are updated
     * @param addresses new addresses values
     */
    event AddressesUpdated(Addresses addresses);

    /**
     * @dev Emitted when access control is updated for an account
     * @param target account address to update
     * @param role role to update
     * @param access whether role is granted or revoked
     */
    event AccessControlUpdated(address target, Role role, bool access);

    error NotAllowed();
    error WrongAccess();
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

import "../types/IReferrals.sol";

/**
 * @dev Interface for GNSReferrals facet (inherits types and also contains functions, events, and custom errors)
 */
interface IReferralsUtils is IReferrals {
    /**
     *
     * @param _allyFeeP % of total referral fee going to ally
     * @param _startReferrerFeeP initial % of total referral fee earned when zero volume referred
     * @param _targetVolumeUsd usd opening volume to refer to reach 100% of referral fee
     */
    function initializeReferrals(uint256 _allyFeeP, uint256 _startReferrerFeeP, uint256 _targetVolumeUsd) external;

    /**
     * @dev Updates allyFeeP
     * @param _value new ally fee %
     */
    function updateAllyFeeP(uint256 _value) external;

    /**
     * @dev Updates startReferrerFeeP
     * @param _value new start referrer fee %
     */
    function updateStartReferrerFeeP(uint256 _value) external;

    /**
     * @dev Updates targetVolumeUsd
     * @param _value new target volume in usd
     */
    function updateReferralsTargetVolumeUsd(uint256 _value) external;

    /**
     * @dev Whitelists ally addresses
     * @param _allies array of ally addresses
     */
    function whitelistAllies(address[] calldata _allies) external;

    /**
     * @dev Unwhitelists ally addresses
     * @param _allies array of ally addresses
     */
    function unwhitelistAllies(address[] calldata _allies) external;

    /**
     * @dev Whitelists referrer addresses
     * @param _referrers array of referrer addresses
     * @param _allies array of corresponding ally addresses
     */
    function whitelistReferrers(address[] calldata _referrers, address[] calldata _allies) external;

    /**
     * @dev Unwhitelists referrer addresses
     * @param _referrers array of referrer addresses
     */
    function unwhitelistReferrers(address[] calldata _referrers) external;

    /**
     * @dev Registers potential referrer for trader (only works if trader wasn't referred yet by someone else)
     * @param _trader trader address
     * @param _referral referrer address
     */
    function registerPotentialReferrer(address _trader, address _referral) external;

    /**
     * @dev Distributes ally and referrer rewards
     * @param _trader trader address
     * @param _volumeUsd trading volume in usd (1e18 precision)
     * @param _referrerFeeUsd referrer fee in USD (1e18 precision)
     * @param _gnsPriceUsd token price in usd (1e10 precision)
     */
    function distributeReferralReward(
        address _trader,
        uint256 _volumeUsd, // 1e18
        uint256 _referrerFeeUsd,
        uint256 _gnsPriceUsd // 1e10
    ) external;

    /**
     * @dev Claims pending GNS ally rewards of caller
     */
    function claimAllyRewards() external;

    /**
     * @dev Claims pending GNS referrer rewards of caller
     */
    function claimReferrerRewards() external;

    /**
     * @dev Returns referrer fee % progress towards earning 100% based on his volume referred (1e10)
     * @param _referrer referrer address
     */
    function getReferrerFeeProgressP(address _referrer) external view returns (uint256);

    /**
     * @dev Returns last referrer of trader (whether referrer active or not)
     * @param _trader address of trader
     */
    function getTraderLastReferrer(address _trader) external view returns (address);

    /**
     * @dev Returns active referrer of trader
     * @param _trader address of trader
     */
    function getTraderActiveReferrer(address _trader) external view returns (address);

    /**
     * @dev Returns referrers referred by ally
     * @param _ally address of ally
     */
    function getReferrersReferred(address _ally) external view returns (address[] memory);

    /**
     * @dev Returns traders referred by referrer
     * @param _referrer address of referrer
     */
    function getTradersReferred(address _referrer) external view returns (address[] memory);

    /**
     * @dev Returns ally fee % of total referral fee
     */
    function getReferralsAllyFeeP() external view returns (uint256);

    /**
     * @dev Returns start referrer fee % of total referral fee when zero volume was referred
     */
    function getReferralsStartReferrerFeeP() external view returns (uint256);

    /**
     * @dev Returns target volume in usd to reach 100% of referral fee
     */
    function getReferralsTargetVolumeUsd() external view returns (uint256);

    /**
     * @dev Returns ally details
     * @param _ally address of ally
     */
    function getAllyDetails(address _ally) external view returns (AllyDetails memory);

    /**
     * @dev Returns referrer details
     * @param _referrer address of referrer
     */
    function getReferrerDetails(address _referrer) external view returns (ReferrerDetails memory);

    /**
     * @dev Emitted when allyFeeP is updated
     * @param value new ally fee %
     */
    event UpdatedAllyFeeP(uint256 value);

    /**
     * @dev Emitted when startReferrerFeeP is updated
     * @param value new start referrer fee %
     */
    event UpdatedStartReferrerFeeP(uint256 value);

    /**
     * @dev Emitted when openFeeP is updated
     * @param value new open fee %
     */
    event UpdatedOpenFeeP(uint256 value);

    /**
     * @dev Emitted when targetVolumeUsd is updated
     * @param value new target volume in usd
     */
    event UpdatedTargetVolumeUsd(uint256 value);

    /**
     * @dev Emitted when an ally is whitelisted
     * @param ally ally address
     */
    event AllyWhitelisted(address indexed ally);

    /**
     * @dev Emitted when an ally is unwhitelisted
     * @param ally ally address
     */
    event AllyUnwhitelisted(address indexed ally);

    /**
     * @dev Emitted when a referrer is whitelisted
     * @param referrer referrer address
     * @param ally ally address
     */
    event ReferrerWhitelisted(address indexed referrer, address indexed ally);

    /**
     * @dev Emitted when a referrer is unwhitelisted
     * @param referrer referrer address
     */
    event ReferrerUnwhitelisted(address indexed referrer);

    /**
     * @dev Emitted when a trader has a new active referrer
     */
    event ReferrerRegistered(address indexed trader, address indexed referrer);

    /**
     * @dev Emitted when ally rewards are distributed for a trade
     * @param ally address of ally
     * @param trader address of trader
     * @param volumeUsd trade volume in usd (1e18 precision)
     * @param amountGns amount of GNS reward (1e18 precision)
     * @param amountValueUsd USD value of GNS reward (1e18 precision)
     */
    event AllyRewardDistributed(
        address indexed ally,
        address indexed trader,
        uint256 volumeUsd,
        uint256 amountGns,
        uint256 amountValueUsd
    );

    /**
     * @dev Emitted when referrer rewards are distributed for a trade
     * @param referrer address of referrer
     * @param trader address of trader
     * @param volumeUsd trade volume in usd (1e18 precision)
     * @param amountGns amount of GNS reward (1e18 precision)
     * @param amountValueUsd USD value of GNS reward (1e18 precision)
     */
    event ReferrerRewardDistributed(
        address indexed referrer,
        address indexed trader,
        uint256 volumeUsd,
        uint256 amountGns,
        uint256 amountValueUsd
    );

    /**
     * @dev Emitted when an ally claims his pending rewards
     * @param ally address of ally
     * @param amountGns GNS pending rewards amount
     */
    event AllyRewardsClaimed(address indexed ally, uint256 amountGns);

    /**
     * @dev Emitted when a referrer claims his pending rewards
     * @param referrer address of referrer
     * @param amountGns GNS pending rewards amount
     */
    event ReferrerRewardsClaimed(address indexed referrer, uint256 amountGns);

    error NoPendingRewards();
    error AlreadyActive();
    error AlreadyInactive();
    error AllyNotActive();
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

/**
 * @dev Contains the types for the GNSAddressStore facet
 */
interface IAddressStore {
    enum Role {
        GOV_TIMELOCK,
        GOV,
        MANAGER,
        GOV_EMERGENCY
    }

    struct Addresses {
        address gns;
        address gnsStaking;
        address treasury;
    }

    struct AddressStore {
        uint256 __deprecated; // previously globalAddresses (gns token only, 1 slot)
        mapping(address => mapping(Role => bool)) accessControl;
        Addresses globalAddresses;
        uint256[7] __gap1; // gap for global addresses
        // insert new storage here
        uint256[38] __gap2; // gap for rest of diamond storage
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

/**
 * @dev Contains the types for the GNSPairsStorage facet
 */
interface IPairsStorage {
    struct PairsStorage {
        mapping(uint256 => Pair) pairs;
        mapping(uint256 => Group) groups;
        mapping(uint256 => Fee) fees; /// @custom:deprecated
        mapping(string => mapping(string => bool)) isPairListed;
        mapping(uint256 => uint256) pairCustomMaxLeverage; // 1e3 precision
        uint256 currentOrderId; /// @custom:deprecated
        uint256 pairsCount;
        uint256 groupsCount;
        uint256 feesCount;
        mapping(uint256 => GroupLiquidationParams) groupLiquidationParams;
        mapping(uint256 => FeeGroup) feeGroups;
        GlobalTradeFeeParams globalTradeFeeParams;
        uint256[38] __gap;
    }

    struct Pair {
        string from;
        string to;
        Feed feed; /// @custom:deprecated
        uint256 spreadP; // 1e10
        uint256 groupIndex;
        uint256 feeIndex;
    }

    struct Group {
        string name;
        bytes32 job; /// @custom:deprecated
        uint256 minLeverage; // 1e3 precision
        uint256 maxLeverage; // 1e3 precision
    }

    struct GlobalTradeFeeParams {
        uint24 referralFeeP; // 1e3 (%)
        uint24 govFeeP; // 1e3 (%)
        uint24 triggerOrderFeeP; // 1e3 (%)
        uint24 gnsOtcFeeP; // 1e3 (%)
        uint24 gTokenFeeP; // 1e3 (%)
        uint136 __placeholder;
    }

    struct FeeGroup {
        uint40 totalPositionSizeFeeP; // 1e10 (%)
        uint40 totalLiqCollateralFeeP; // 1e10 (%)
        uint40 oraclePositionSizeFeeP; // 1e10 (%)
        uint32 minPositionSizeUsd; // 1e3
        uint104 __placeholder;
    }

    struct TradeFees {
        uint256 totalFeeCollateral; // collateral precision
        uint256 referralFeeCollateral; // collateral precision
        uint256 govFeeCollateral; // collateral precision
        uint256 triggerOrderFeeCollateral; // collateral precision
        uint256 gnsOtcFeeCollateral; // collateral precision
        uint256 gTokenFeeCollateral; // collateral precision
    }

    struct GroupLiquidationParams {
        uint40 maxLiqSpreadP; // 1e10 (%)
        uint40 startLiqThresholdP; // 1e10 (%)
        uint40 endLiqThresholdP; // 1e10 (%)
        uint24 startLeverage; // 1e3
        uint24 endLeverage; // 1e3
    }

    // Deprecated structs
    enum FeedCalculation {
        DEFAULT,
        INVERT,
        COMBINE
    } /// @custom:deprecated
    struct Feed {
        address feed1;
        address feed2;
        FeedCalculation feedCalculation;
        uint256 maxDeviationP;
    } /// @custom:deprecated
    struct Fee {
        string name;
        uint256 openFeeP; // 1e10 (% of position size)
        uint256 closeFeeP; // 1e10 (% of position size)
        uint256 oracleFeeP; // 1e10 (% of position size)
        uint256 triggerOrderFeeP; // 1e10 (% of position size)
        uint256 minPositionSizeUsd; // 1e18 (collateral x leverage, useful for min fee)
    } /// @custom:deprecated
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

/**
 * @dev Contains the types for the GNSReferrals facet
 */
interface IReferrals {
    struct ReferralsStorage {
        mapping(address => AllyDetails) allyDetails;
        mapping(address => ReferrerDetails) referrerDetails;
        mapping(address => address) referrerByTrader;
        uint256 allyFeeP; // % (of referrer fees going to allies, eg. 10)
        uint256 startReferrerFeeP; // % (of referrer fee when 0 volume referred, eg. 75)
        uint256 openFeeP; /// @custom:deprecated
        uint256 targetVolumeUsd; // USD (to reach maximum referral system fee, eg. 1e8)
        uint256[43] __gap;
    }

    struct AllyDetails {
        address[] referrersReferred;
        uint256 volumeReferredUsd; // 1e18
        uint256 pendingRewardsGns; // 1e18
        uint256 totalRewardsGns; // 1e18
        uint256 totalRewardsValueUsd; // 1e18
        bool active;
    }

    struct ReferrerDetails {
        address ally;
        address[] tradersReferred;
        uint256 volumeReferredUsd; // 1e18
        uint256 pendingRewardsGns; // 1e18
        uint256 totalRewardsGns; // 1e18
        uint256 totalRewardsValueUsd; // 1e18
        bool active;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

import "./IPairsStorage.sol";

/**
 * @dev Contains the types for the GNSTradingStorage facet
 */
interface ITradingStorage {
    struct TradingStorage {
        TradingActivated tradingActivated; // 8 bits
        uint8 lastCollateralIndex; // 8 bits
        uint240 __placeholder; // 240 bits
        mapping(uint8 => Collateral) collaterals;
        mapping(uint8 => address) gTokens;
        mapping(address => uint8) collateralIndex;
        mapping(address => mapping(uint32 => Trade)) trades;
        mapping(address => mapping(uint32 => TradeInfo)) tradeInfos;
        mapping(address => mapping(uint32 => mapping(PendingOrderType => uint256))) tradePendingOrderBlock;
        mapping(address => mapping(uint32 => PendingOrder)) pendingOrders;
        mapping(address => mapping(CounterType => Counter)) userCounters;
        address[] traders;
        mapping(address => bool) traderStored;
        mapping(address => mapping(uint32 => IPairsStorage.GroupLiquidationParams)) tradeLiquidationParams;
        uint256[38] __gap;
    }

    enum PendingOrderType {
        MARKET_OPEN,
        MARKET_CLOSE,
        LIMIT_OPEN,
        STOP_OPEN,
        TP_CLOSE,
        SL_CLOSE,
        LIQ_CLOSE,
        UPDATE_LEVERAGE,
        MARKET_PARTIAL_OPEN,
        MARKET_PARTIAL_CLOSE
    }

    enum CounterType {
        TRADE,
        PENDING_ORDER
    }

    enum TradeType {
        TRADE,
        LIMIT,
        STOP
    }

    enum TradingActivated {
        ACTIVATED,
        CLOSE_ONLY,
        PAUSED
    }

    enum ContractsVersion {
        BEFORE_V9_2,
        V9_2
    }

    struct Collateral {
        // slot 1
        address collateral; // 160 bits
        bool isActive; // 8 bits
        uint88 __placeholder; // 88 bits
        // slot 2
        uint128 precision;
        uint128 precisionDelta;
    }

    struct Id {
        address user; // 160 bits
        uint32 index; // max: 4,294,967,295
    }

    struct Trade {
        // slot 1
        address user; // 160 bits
        uint32 index; // max: 4,294,967,295
        uint16 pairIndex; // max: 65,535
        uint24 leverage; // 1e3; max: 16,777.215
        bool long; // 8 bits
        bool isOpen; // 8 bits
        uint8 collateralIndex; // max: 255
        // slot 2
        TradeType tradeType; // 8 bits
        uint120 collateralAmount; // 1e18; max: 3.402e+38
        uint64 openPrice; // 1e10; max: 1.8e19
        uint64 tp; // 1e10; max: 1.8e19
        // slot 3 (192 bits left)
        uint64 sl; // 1e10; max: 1.8e19
        uint192 __placeholder;
    }

    struct TradeInfo {
        uint32 createdBlock; // for lookbacks
        uint32 tpLastUpdatedBlock; // for lookbacks
        uint32 slLastUpdatedBlock; // for lookbacks
        uint16 maxSlippageP; // 1e3 (%)
        uint48 lastOiUpdateTs; // deprecated
        uint48 collateralPriceUsd; // 1e8 collateral price at trade open
        ContractsVersion contractsVersion;
        uint32 lastPosIncreaseBlock; // for protection close factor
        uint8 __placeholder;
    }

    struct PendingOrder {
        // slots 1-3
        Trade trade;
        // slot 4
        address user; // 160 bits
        uint32 index; // max: 4,294,967,295
        bool isOpen; // 8 bits
        PendingOrderType orderType; // 8 bits
        uint32 createdBlock; // max: 4,294,967,295
        uint16 maxSlippageP; // 1e3 (%), max: 65.535%
    }

    struct Counter {
        uint32 currentIndex;
        uint32 openCount;
        uint192 __placeholder;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

import "../interfaces/types/IAddressStore.sol";

import "./StorageUtils.sol";

/**
 *
 * @dev GNSAddressStore facet internal library
 */
library AddressStoreUtils {
    /**
     * @dev Returns storage slot to use when fetching addresses
     */
    function _getSlot() internal pure returns (uint256) {
        return StorageUtils.GLOBAL_ADDRESSES_SLOT;
    }

    /**
     * @dev Returns storage pointer for Addresses struct in global diamond contract, at defined slot
     */
    function getAddresses() internal pure returns (IAddressStore.Addresses storage s) {
        uint256 storageSlot = _getSlot();
        assembly {
            s.slot := storageSlot
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

import "../interfaces/types/ITradingStorage.sol";

/**
 *
 * @dev Internal library for important constants commonly used in many places
 */
library ConstantsUtils {
    uint256 internal constant P_10 = 1e10; // 10 decimals (DO NOT UPDATE)
    uint256 internal constant MAX_PNL_P = 900; // 900% PnL (10x)
    uint256 internal constant SL_LIQ_BUFFER_P = 10 * P_10; // SL has to be 10% closer than liq price
    uint256 internal constant LEGACY_LIQ_THRESHOLD_P = 90 * P_10; // -90% pnl
    uint256 internal constant MIN_LIQ_THRESHOLD_P = 50 * P_10; // -50% pnl
    uint256 internal constant MAX_OPEN_NEGATIVE_PNL_P = 40 * P_10; // -40% pnl
    uint256 internal constant MAX_LIQ_SPREAD_P = (5 * P_10) / 100; // 0.05%
    uint16 internal constant DEFAULT_MAX_CLOSING_SLIPPAGE_P = 1 * 1e3; // 1%

    function getMarketOrderTypes() internal pure returns (ITradingStorage.PendingOrderType[5] memory) {
        return [
            ITradingStorage.PendingOrderType.MARKET_OPEN,
            ITradingStorage.PendingOrderType.MARKET_CLOSE,
            ITradingStorage.PendingOrderType.UPDATE_LEVERAGE,
            ITradingStorage.PendingOrderType.MARKET_PARTIAL_OPEN,
            ITradingStorage.PendingOrderType.MARKET_PARTIAL_CLOSE
        ];
    }

    /**
     * @dev Returns pending order type (market open/limit open/stop open) for a trade type (trade/limit/stop)
     * @param _tradeType the trade type
     */
    function getPendingOpenOrderType(
        ITradingStorage.TradeType _tradeType
    ) internal pure returns (ITradingStorage.PendingOrderType) {
        return
            _tradeType == ITradingStorage.TradeType.TRADE
                ? ITradingStorage.PendingOrderType.MARKET_OPEN
                : _tradeType == ITradingStorage.TradeType.LIMIT
                ? ITradingStorage.PendingOrderType.LIMIT_OPEN
                : ITradingStorage.PendingOrderType.STOP_OPEN;
    }

    /**
     * @dev Returns true if order type is market
     * @param _orderType order type
     */
    function isOrderTypeMarket(ITradingStorage.PendingOrderType _orderType) internal pure returns (bool) {
        ITradingStorage.PendingOrderType[5] memory marketOrderTypes = ConstantsUtils.getMarketOrderTypes();
        for (uint256 i; i < marketOrderTypes.length; ++i) {
            if (_orderType == marketOrderTypes[i]) return true;
        }
        return false;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

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

import "../interfaces/libraries/IReferralsUtils.sol";
import "../interfaces/IERC20.sol";
import "../interfaces/IGeneralErrors.sol";

import "./AddressStoreUtils.sol";
import "./StorageUtils.sol";
import "./ConstantsUtils.sol";

/**
 * @dev GNSReferrals facet internal library
 */
library ReferralsUtils {
    using SafeERC20 for IERC20;

    uint256 private constant MAX_ALLY_FEE_P = 50;
    uint256 private constant MAX_START_REFERRER_FEE_P = 100;
    uint256 private constant MAX_OPEN_FEE_P = 50;

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function initializeReferrals(uint256 _allyFeeP, uint256 _startReferrerFeeP, uint256 _targetVolumeUsd) internal {
        if (_allyFeeP > MAX_ALLY_FEE_P || _startReferrerFeeP > MAX_START_REFERRER_FEE_P || _targetVolumeUsd == 0)
            revert IGeneralErrors.WrongParams();

        IReferralsUtils.ReferralsStorage storage s = _getStorage();

        s.allyFeeP = _allyFeeP;
        s.startReferrerFeeP = _startReferrerFeeP;
        s.targetVolumeUsd = _targetVolumeUsd;
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function updateAllyFeeP(uint256 _value) internal {
        if (_value > MAX_ALLY_FEE_P) revert IGeneralErrors.AboveMax();

        _getStorage().allyFeeP = _value;

        emit IReferralsUtils.UpdatedAllyFeeP(_value);
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function updateStartReferrerFeeP(uint256 _value) internal {
        if (_value > MAX_START_REFERRER_FEE_P) revert IGeneralErrors.AboveMax();

        _getStorage().startReferrerFeeP = _value;

        emit IReferralsUtils.UpdatedStartReferrerFeeP(_value);
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function updateReferralsTargetVolumeUsd(uint256 _value) internal {
        if (_value == 0) revert IGeneralErrors.ZeroValue();

        _getStorage().targetVolumeUsd = _value;

        emit IReferralsUtils.UpdatedTargetVolumeUsd(_value);
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function whitelistAllies(address[] calldata _allies) internal {
        for (uint256 i = 0; i < _allies.length; ++i) {
            _whitelistAlly(_allies[i]);
        }
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function unwhitelistAllies(address[] calldata _allies) internal {
        for (uint256 i = 0; i < _allies.length; ++i) {
            _unwhitelistAlly(_allies[i]);
        }
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function whitelistReferrers(address[] calldata _referrers, address[] calldata _allies) internal {
        if (_referrers.length != _allies.length) revert IGeneralErrors.WrongLength();

        for (uint256 i = 0; i < _referrers.length; ++i) {
            _whitelistReferrer(_referrers[i], _allies[i]);
        }
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function unwhitelistReferrers(address[] calldata _referrers) internal {
        for (uint256 i = 0; i < _referrers.length; ++i) {
            _unwhitelistReferrer(_referrers[i]);
        }
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function registerPotentialReferrer(address _trader, address _referrer) internal {
        IReferralsUtils.ReferralsStorage storage s = _getStorage();
        IReferralsUtils.ReferrerDetails storage r = s.referrerDetails[_referrer];

        if (s.referrerByTrader[_trader] != address(0) || _referrer == address(0) || !r.active) {
            return;
        }

        s.referrerByTrader[_trader] = _referrer;
        r.tradersReferred.push(_trader);

        emit IReferralsUtils.ReferrerRegistered(_trader, _referrer);
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function distributeReferralReward(
        address _trader,
        uint256 _volumeUsd,
        uint256 _referrerFeeUsd,
        uint256 _gnsPriceUsd
    ) internal {
        IReferralsUtils.ReferralsStorage storage s = _getStorage();

        address referrer = s.referrerByTrader[_trader];
        IReferralsUtils.ReferrerDetails storage r = s.referrerDetails[referrer];

        if (!r.active) {
            return;
        }

        uint256 referrerRewardGns = (_referrerFeeUsd * ConstantsUtils.P_10) / _gnsPriceUsd;

        IERC20(AddressStoreUtils.getAddresses().gns).mint(address(this), referrerRewardGns);

        IReferralsUtils.AllyDetails storage a = s.allyDetails[r.ally];

        uint256 allyRewardValueUsd;
        uint256 allyRewardGns;

        if (a.active) {
            uint256 allyFeeP = s.allyFeeP;

            allyRewardValueUsd = (_referrerFeeUsd * allyFeeP) / 100;
            allyRewardGns = (referrerRewardGns * allyFeeP) / 100;

            a.volumeReferredUsd += _volumeUsd;
            a.pendingRewardsGns += allyRewardGns;
            a.totalRewardsGns += allyRewardGns;
            a.totalRewardsValueUsd += allyRewardValueUsd;

            _referrerFeeUsd -= allyRewardValueUsd;
            referrerRewardGns -= allyRewardGns;

            emit IReferralsUtils.AllyRewardDistributed(r.ally, _trader, _volumeUsd, allyRewardGns, allyRewardValueUsd);
        }

        r.volumeReferredUsd += _volumeUsd;
        r.pendingRewardsGns += referrerRewardGns;
        r.totalRewardsGns += referrerRewardGns;
        r.totalRewardsValueUsd += _referrerFeeUsd;

        emit IReferralsUtils.ReferrerRewardDistributed(
            referrer,
            _trader,
            _volumeUsd,
            referrerRewardGns,
            _referrerFeeUsd
        );
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function claimAllyRewards() internal {
        IReferralsUtils.AllyDetails storage a = _getStorage().allyDetails[msg.sender];
        uint256 rewardsGns = a.pendingRewardsGns;

        if (rewardsGns == 0) revert IReferralsUtils.NoPendingRewards();

        a.pendingRewardsGns = 0;
        IERC20(AddressStoreUtils.getAddresses().gns).safeTransfer(msg.sender, rewardsGns);

        emit IReferralsUtils.AllyRewardsClaimed(msg.sender, rewardsGns);
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function claimReferrerRewards() internal {
        IReferralsUtils.ReferrerDetails storage r = _getStorage().referrerDetails[msg.sender];
        uint256 rewardsGns = r.pendingRewardsGns;

        if (rewardsGns == 0) revert IReferralsUtils.NoPendingRewards();

        r.pendingRewardsGns = 0;
        IERC20(AddressStoreUtils.getAddresses().gns).safeTransfer(msg.sender, rewardsGns);

        emit IReferralsUtils.ReferrerRewardsClaimed(msg.sender, rewardsGns);
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function getReferrerFeeProgressP(address _referrer) internal view returns (uint256 progressP) {
        IReferralsUtils.ReferralsStorage storage s = _getStorage();
        uint256 volumeReferredUsd = s.referrerDetails[_referrer].volumeReferredUsd;
        uint256 targetVolumeUsd1e18 = s.targetVolumeUsd * 1e18;

        progressP = s.startReferrerFeeP * ConstantsUtils.P_10;
        progressP +=
            ((100 * ConstantsUtils.P_10 - progressP) *
                (volumeReferredUsd > targetVolumeUsd1e18 ? targetVolumeUsd1e18 : volumeReferredUsd)) /
            targetVolumeUsd1e18;
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function getTraderLastReferrer(address _trader) internal view returns (address) {
        return _getStorage().referrerByTrader[_trader];
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function getTraderActiveReferrer(address _trader) internal view returns (address) {
        address referrer = getTraderLastReferrer(_trader);
        return getReferrerDetails(referrer).active ? referrer : address(0);
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function getReferrersReferred(address _ally) internal view returns (address[] memory) {
        return getAllyDetails(_ally).referrersReferred;
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function getTradersReferred(address _referrer) internal view returns (address[] memory) {
        return getReferrerDetails(_referrer).tradersReferred;
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function getReferralsAllyFeeP() internal view returns (uint256) {
        return _getStorage().allyFeeP;
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function getReferralsStartReferrerFeeP() internal view returns (uint256) {
        return _getStorage().startReferrerFeeP;
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function getReferralsTargetVolumeUsd() internal view returns (uint256) {
        return _getStorage().targetVolumeUsd;
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function getAllyDetails(address _ally) internal view returns (IReferralsUtils.AllyDetails memory) {
        return _getStorage().allyDetails[_ally];
    }

    /**
     * @dev Check IReferralsUtils interface for documentation
     */
    function getReferrerDetails(address _referrer) internal view returns (IReferralsUtils.ReferrerDetails memory) {
        return _getStorage().referrerDetails[_referrer];
    }

    /**
     * @dev Returns storage slot to use when fetching storage relevant to library
     */
    function _getSlot() internal pure returns (uint256) {
        return StorageUtils.GLOBAL_REFERRALS_SLOT;
    }

    /**
     * @dev Returns storage pointer for storage struct in diamond contract, at defined slot
     */
    function _getStorage() internal pure returns (IReferralsUtils.ReferralsStorage storage s) {
        uint256 storageSlot = _getSlot();
        assembly {
            s.slot := storageSlot
        }
    }

    /**
     * @dev Whitelists new ally
     * @param _ally address of ally
     */
    function _whitelistAlly(address _ally) internal {
        if (_ally == address(0)) revert IGeneralErrors.ZeroAddress();

        IReferralsUtils.AllyDetails storage a = _getStorage().allyDetails[_ally];
        if (a.active) revert IReferralsUtils.AlreadyActive();

        a.active = true;

        emit IReferralsUtils.AllyWhitelisted(_ally);
    }

    /**
     * @dev Unwhitelists ally
     * @param _ally address of ally
     */
    function _unwhitelistAlly(address _ally) internal {
        IReferralsUtils.AllyDetails storage a = _getStorage().allyDetails[_ally];
        if (!a.active) revert IReferralsUtils.AlreadyInactive();

        a.active = false;

        emit IReferralsUtils.AllyUnwhitelisted(_ally);
    }

    /**
     * @dev Whitelists new referrer
     * @param _referrer address of referrer
     * @param _ally address of ally
     */
    function _whitelistReferrer(address _referrer, address _ally) internal {
        if (_referrer == address(0)) revert IGeneralErrors.ZeroAddress();
        IReferralsUtils.ReferralsStorage storage s = _getStorage();

        IReferralsUtils.ReferrerDetails storage r = s.referrerDetails[_referrer];
        if (r.active) revert IReferralsUtils.AlreadyActive();

        r.active = true;

        if (_ally != address(0)) {
            IReferralsUtils.AllyDetails storage a = s.allyDetails[_ally];
            if (!a.active) revert IReferralsUtils.AllyNotActive();

            r.ally = _ally;
            a.referrersReferred.push(_referrer);
        }

        emit IReferralsUtils.ReferrerWhitelisted(_referrer, _ally);
    }

    /**
     * @dev Unwhitelists referrer
     * @param _referrer address of referrer
     */
    function _unwhitelistReferrer(address _referrer) internal {
        IReferralsUtils.ReferrerDetails storage r = _getStorage().referrerDetails[_referrer];
        if (!r.active) revert IReferralsUtils.AlreadyInactive();

        r.active = false;

        emit IReferralsUtils.ReferrerUnwhitelisted(_referrer);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

/**
 *
 * @dev Internal library to manage storage slots of GNSMultiCollatDiamond contract diamond storage structs.
 *
 * BE EXTREMELY CAREFUL, DO NOT EDIT THIS WITHOUT A GOOD REASON
 *
 */
library StorageUtils {
    uint256 internal constant GLOBAL_ADDRESSES_SLOT = 3;
    uint256 internal constant GLOBAL_PAIRS_STORAGE_SLOT = 51;
    uint256 internal constant GLOBAL_REFERRALS_SLOT = 101;
    uint256 internal constant GLOBAL_FEE_TIERS_SLOT = 151;
    uint256 internal constant GLOBAL_PRICE_IMPACT_SLOT = 201;
    uint256 internal constant GLOBAL_DIAMOND_SLOT = 251;
    uint256 internal constant GLOBAL_TRADING_STORAGE_SLOT = 301;
    uint256 internal constant GLOBAL_TRIGGER_REWARDS_SLOT = 351;
    uint256 internal constant GLOBAL_TRADING_SLOT = 401;
    uint256 internal constant GLOBAL_TRADING_CALLBACKS_SLOT = 451;
    uint256 internal constant GLOBAL_BORROWING_FEES_SLOT = 501;
    uint256 internal constant GLOBAL_PRICE_AGGREGATOR_SLOT = 551;
    uint256 internal constant GLOBAL_OTC_SLOT = 601;
    uint256 internal constant GLOBAL_CHAIN_CONFIG_SLOT = 651;
}

{
  "optimizer": {
    "enabled": true,
    "runs": 800
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"AboveMax","type":"error"},{"inputs":[],"name":"AllyNotActive","type":"error"},{"inputs":[],"name":"AlreadyActive","type":"error"},{"inputs":[],"name":"AlreadyExists","type":"error"},{"inputs":[],"name":"AlreadyInactive","type":"error"},{"inputs":[],"name":"BelowMin","type":"error"},{"inputs":[],"name":"BlockOrder","type":"error"},{"inputs":[],"name":"DoesntExist","type":"error"},{"inputs":[],"name":"InitError","type":"error"},{"inputs":[],"name":"InsufficientBalance","type":"error"},{"inputs":[],"name":"InvalidAddress","type":"error"},{"inputs":[],"name":"InvalidAddresses","type":"error"},{"inputs":[],"name":"InvalidCollateralIndex","type":"error"},{"inputs":[],"name":"InvalidInputLength","type":"error"},{"inputs":[],"name":"NoPendingRewards","type":"error"},{"inputs":[],"name":"NotAllowed","type":"error"},{"inputs":[],"name":"NotAuthorized","type":"error"},{"inputs":[],"name":"Overflow","type":"error"},{"inputs":[],"name":"Paused","type":"error"},{"inputs":[],"name":"UnsupportedChain","type":"error"},{"inputs":[],"name":"WrongAccess","type":"error"},{"inputs":[],"name":"WrongIndex","type":"error"},{"inputs":[],"name":"WrongLength","type":"error"},{"inputs":[],"name":"WrongOrder","type":"error"},{"inputs":[],"name":"WrongOrderType","type":"error"},{"inputs":[],"name":"WrongParams","type":"error"},{"inputs":[],"name":"WrongTradeType","type":"error"},{"inputs":[],"name":"ZeroAddress","type":"error"},{"inputs":[],"name":"ZeroValue","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"target","type":"address"},{"indexed":false,"internalType":"enum IAddressStore.Role","name":"role","type":"uint8"},{"indexed":false,"internalType":"bool","name":"access","type":"bool"}],"name":"AccessControlUpdated","type":"event"},{"anonymous":false,"inputs":[{"components":[{"internalType":"address","name":"gns","type":"address"},{"internalType":"address","name":"gnsStaking","type":"address"},{"internalType":"address","name":"treasury","type":"address"}],"indexed":false,"internalType":"struct IAddressStore.Addresses","name":"addresses","type":"tuple"}],"name":"AddressesUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"ally","type":"address"},{"indexed":true,"internalType":"address","name":"trader","type":"address"},{"indexed":false,"internalType":"uint256","name":"volumeUsd","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amountGns","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amountValueUsd","type":"uint256"}],"name":"AllyRewardDistributed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"ally","type":"address"},{"indexed":false,"internalType":"uint256","name":"amountGns","type":"uint256"}],"name":"AllyRewardsClaimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"ally","type":"address"}],"name":"AllyUnwhitelisted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"ally","type":"address"}],"name":"AllyWhitelisted","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"version","type":"uint8"}],"name":"Initialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"trader","type":"address"},{"indexed":true,"internalType":"address","name":"referrer","type":"address"}],"name":"ReferrerRegistered","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"referrer","type":"address"},{"indexed":true,"internalType":"address","name":"trader","type":"address"},{"indexed":false,"internalType":"uint256","name":"volumeUsd","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amountGns","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amountValueUsd","type":"uint256"}],"name":"ReferrerRewardDistributed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"referrer","type":"address"},{"indexed":false,"internalType":"uint256","name":"amountGns","type":"uint256"}],"name":"ReferrerRewardsClaimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"referrer","type":"address"}],"name":"ReferrerUnwhitelisted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"referrer","type":"address"},{"indexed":true,"internalType":"address","name":"ally","type":"address"}],"name":"ReferrerWhitelisted","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"UpdatedAllyFeeP","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"UpdatedOpenFeeP","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"UpdatedStartReferrerFeeP","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"UpdatedTargetVolumeUsd","type":"event"},{"inputs":[],"name":"claimAllyRewards","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"claimReferrerRewards","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_trader","type":"address"},{"internalType":"uint256","name":"_volumeUsd","type":"uint256"},{"internalType":"uint256","name":"_referrerFeeUsd","type":"uint256"},{"internalType":"uint256","name":"_gnsPriceUsd","type":"uint256"}],"name":"distributeReferralReward","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getAddresses","outputs":[{"components":[{"internalType":"address","name":"gns","type":"address"},{"internalType":"address","name":"gnsStaking","type":"address"},{"internalType":"address","name":"treasury","type":"address"}],"internalType":"struct IAddressStore.Addresses","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_ally","type":"address"}],"name":"getAllyDetails","outputs":[{"components":[{"internalType":"address[]","name":"referrersReferred","type":"address[]"},{"internalType":"uint256","name":"volumeReferredUsd","type":"uint256"},{"internalType":"uint256","name":"pendingRewardsGns","type":"uint256"},{"internalType":"uint256","name":"totalRewardsGns","type":"uint256"},{"internalType":"uint256","name":"totalRewardsValueUsd","type":"uint256"},{"internalType":"bool","name":"active","type":"bool"}],"internalType":"struct IReferrals.AllyDetails","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getReferralsAllyFeeP","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getReferralsStartReferrerFeeP","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getReferralsTargetVolumeUsd","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_referrer","type":"address"}],"name":"getReferrerDetails","outputs":[{"components":[{"internalType":"address","name":"ally","type":"address"},{"internalType":"address[]","name":"tradersReferred","type":"address[]"},{"internalType":"uint256","name":"volumeReferredUsd","type":"uint256"},{"internalType":"uint256","name":"pendingRewardsGns","type":"uint256"},{"internalType":"uint256","name":"totalRewardsGns","type":"uint256"},{"internalType":"uint256","name":"totalRewardsValueUsd","type":"uint256"},{"internalType":"bool","name":"active","type":"bool"}],"internalType":"struct IReferrals.ReferrerDetails","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_referrer","type":"address"}],"name":"getReferrerFeeProgressP","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_ally","type":"address"}],"name":"getReferrersReferred","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_trader","type":"address"}],"name":"getTraderActiveReferrer","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_trader","type":"address"}],"name":"getTraderLastReferrer","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_referrer","type":"address"}],"name":"getTradersReferred","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_account","type":"address"},{"internalType":"enum IAddressStore.Role","name":"_role","type":"uint8"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_account","type":"address"},{"internalType":"enum IAddressStore.Role","name":"_roleA","type":"uint8"},{"internalType":"enum IAddressStore.Role","name":"_roleB","type":"uint8"}],"name":"hasRoles","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_govTimelock","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_allyFeeP","type":"uint256"},{"internalType":"uint256","name":"_startReferrerFeeP","type":"uint256"},{"internalType":"uint256","name":"_targetVolumeUsd","type":"uint256"}],"name":"initializeReferrals","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_trader","type":"address"},{"internalType":"address","name":"_referrer","type":"address"}],"name":"registerPotentialReferrer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_accounts","type":"address[]"},{"internalType":"enum IAddressStore.Role[]","name":"_roles","type":"uint8[]"},{"internalType":"bool[]","name":"_values","type":"bool[]"}],"name":"setRoles","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_allies","type":"address[]"}],"name":"unwhitelistAllies","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_referrers","type":"address[]"}],"name":"unwhitelistReferrers","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"updateAllyFeeP","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"updateReferralsTargetVolumeUsd","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"updateStartReferrerFeeP","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_allies","type":"address[]"}],"name":"whitelistAllies","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_referrers","type":"address[]"},{"internalType":"address[]","name":"_allies","type":"address[]"}],"name":"whitelistReferrers","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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