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Contract Name:
AscionCurrency

Contract Source Code:

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/AccessControl.sol)

pragma solidity ^0.8.20;

import {IAccessControl} from "./IAccessControl.sol";
import {Context} from "../utils/Context.sol";
import {ERC165} from "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```solidity
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```solidity
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}
 * to enforce additional security measures for this role.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address account => bool) hasRole;
        bytes32 adminRole;
    }

    mapping(bytes32 role => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with an {AccessControlUnauthorizedAccount} error including the required role.
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual returns (bool) {
        return _roles[role].hasRole[account];
    }

    /**
     * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `_msgSender()`
     * is missing `role`. Overriding this function changes the behavior of the {onlyRole} modifier.
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `account`
     * is missing `role`.
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert AccessControlUnauthorizedAccount(account, role);
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleGranted} event.
     */
    function grantRole(bytes32 role, address account) public virtual onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleRevoked} event.
     */
    function revokeRole(bytes32 role, address account) public virtual onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `callerConfirmation`.
     *
     * May emit a {RoleRevoked} event.
     */
    function renounceRole(bytes32 role, address callerConfirmation) public virtual {
        if (callerConfirmation != _msgSender()) {
            revert AccessControlBadConfirmation();
        }

        _revokeRole(role, callerConfirmation);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Attempts to grant `role` to `account` and returns a boolean indicating if `role` was granted.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual returns (bool) {
        if (!hasRole(role, account)) {
            _roles[role].hasRole[account] = true;
            emit RoleGranted(role, account, _msgSender());
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Attempts to revoke `role` to `account` and returns a boolean indicating if `role` was revoked.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual returns (bool) {
        if (hasRole(role, account)) {
            _roles[role].hasRole[account] = false;
            emit RoleRevoked(role, account, _msgSender());
            return true;
        } else {
            return false;
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/IAccessControl.sol)

pragma solidity ^0.8.20;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev The `account` is missing a role.
     */
    error AccessControlUnauthorizedAccount(address account, bytes32 neededRole);

    /**
     * @dev The caller of a function is not the expected one.
     *
     * NOTE: Don't confuse with {AccessControlUnauthorizedAccount}.
     */
    error AccessControlBadConfirmation();

    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `callerConfirmation`.
     */
    function renounceRole(bytes32 role, address callerConfirmation) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol)
pragma solidity ^0.8.20;

/**
 * @dev Standard ERC20 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens.
 */
interface IERC20Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC20InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC20InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     * @param allowance Amount of tokens a `spender` is allowed to operate with.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC20InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `spender` to be approved. Used in approvals.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC20InvalidSpender(address spender);
}

/**
 * @dev Standard ERC721 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens.
 */
interface IERC721Errors {
    /**
     * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20.
     * Used in balance queries.
     * @param owner Address of the current owner of a token.
     */
    error ERC721InvalidOwner(address owner);

    /**
     * @dev Indicates a `tokenId` whose `owner` is the zero address.
     * @param tokenId Identifier number of a token.
     */
    error ERC721NonexistentToken(uint256 tokenId);

    /**
     * @dev Indicates an error related to the ownership over a particular token. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param tokenId Identifier number of a token.
     * @param owner Address of the current owner of a token.
     */
    error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC721InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC721InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param tokenId Identifier number of a token.
     */
    error ERC721InsufficientApproval(address operator, uint256 tokenId);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC721InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC721InvalidOperator(address operator);
}

/**
 * @dev Standard ERC1155 Errors
 * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens.
 */
interface IERC1155Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     * @param tokenId Identifier number of a token.
     */
    error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC1155InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC1155InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `operator`’s approval. Used in transfers.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     * @param owner Address of the current owner of a token.
     */
    error ERC1155MissingApprovalForAll(address operator, address owner);

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC1155InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `operator` to be approved. Used in approvals.
     * @param operator Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC1155InvalidOperator(address operator);

    /**
     * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
     * Used in batch transfers.
     * @param idsLength Length of the array of token identifiers
     * @param valuesLength Length of the array of token amounts
     */
    error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "./IERC20.sol";
import {IERC20Metadata} from "./extensions/IERC20Metadata.sol";
import {Context} from "../../utils/Context.sol";
import {IERC20Errors} from "../../interfaces/draft-IERC6093.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 */
abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
    mapping(address account => uint256) private _balances;

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

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

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

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

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

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

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

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

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

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

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

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _transfer(address from, address to, uint256 value) internal {
        if (from == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        if (to == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(from, to, value);
    }

    /**
     * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`
     * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding
     * this function.
     *
     * Emits a {Transfer} event.
     */
    function _update(address from, address to, uint256 value) internal virtual {
        if (from == address(0)) {
            // Overflow check required: The rest of the code assumes that totalSupply never overflows
            _totalSupply += value;
        } else {
            uint256 fromBalance = _balances[from];
            if (fromBalance < value) {
                revert ERC20InsufficientBalance(from, fromBalance, value);
            }
            unchecked {
                // Overflow not possible: value <= fromBalance <= totalSupply.
                _balances[from] = fromBalance - value;
            }
        }

        if (to == address(0)) {
            unchecked {
                // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.
                _totalSupply -= value;
            }
        } else {
            unchecked {
                // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.
                _balances[to] += value;
            }
        }

        emit Transfer(from, to, value);
    }

    /**
     * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).
     * Relies on the `_update` mechanism
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _mint(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(address(0), account, value);
    }

    /**
     * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.
     * Relies on the `_update` mechanism.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead
     */
    function _burn(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        _update(account, address(0), value);
    }

    /**
     * @dev Sets `value` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     *
     * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
     */
    function _approve(address owner, address spender, uint256 value) internal {
        _approve(owner, spender, value, true);
    }

    /**
     * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.
     *
     * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by
     * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any
     * `Approval` event during `transferFrom` operations.
     *
     * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to
     * true using the following override:
     * ```
     * function _approve(address owner, address spender, uint256 value, bool) internal virtual override {
     *     super._approve(owner, spender, value, true);
     * }
     * ```
     *
     * Requirements are the same as {_approve}.
     */
    function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {
        if (owner == address(0)) {
            revert ERC20InvalidApprover(address(0));
        }
        if (spender == address(0)) {
            revert ERC20InvalidSpender(address(0));
        }
        _allowances[owner][spender] = value;
        if (emitEvent) {
            emit Approval(owner, spender, value);
        }
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `value`.
     *
     * Does not update the allowance value in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Does not emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            if (currentAllowance < value) {
                revert ERC20InsufficientAllowance(spender, currentAllowance, value);
            }
            unchecked {
                _approve(owner, spender, currentAllowance - value, false);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/ERC20Burnable.sol)

pragma solidity ^0.8.20;

import {ERC20} from "../ERC20.sol";
import {Context} from "../../../utils/Context.sol";

/**
 * @dev Extension of {ERC20} that allows token holders to destroy both their own
 * tokens and those that they have an allowance for, in a way that can be
 * recognized off-chain (via event analysis).
 */
abstract contract ERC20Burnable is Context, ERC20 {
    /**
     * @dev Destroys a `value` amount of tokens from the caller.
     *
     * See {ERC20-_burn}.
     */
    function burn(uint256 value) public virtual {
        _burn(_msgSender(), value);
    }

    /**
     * @dev Destroys a `value` amount of tokens from `account`, deducting from
     * the caller's allowance.
     *
     * See {ERC20-_burn} and {ERC20-allowance}.
     *
     * Requirements:
     *
     * - the caller must have allowance for ``accounts``'s tokens of at least
     * `value`.
     */
    function burnFrom(address account, uint256 value) public virtual {
        _spendAllowance(account, _msgSender(), value);
        _burn(account, value);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 */
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 v5.0.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @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 value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` 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 value) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

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

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

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/ERC165.sol)

pragma solidity ^0.8.20;

import {IERC165} from "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/IERC165.sol)

pragma solidity ^0.8.20;

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

// SPDX-License-Identifier: MIT
//
//    ###     ######   ######  ####  #######  ##    ##
//   ## ##   ##    ## ##    ##  ##  ##     ## ###   ##
//  ##   ##  ##       ##        ##  ##     ## ####  ##
// ##     ##  ######  ##        ##  ##     ## ## ## ##
// #########       ## ##        ##  ##     ## ##  ####
// ##     ## ##    ## ##    ##  ##  ##     ## ##   ###
// ##     ##  ######   ######  ####  #######  ##    ##
//
// This smart contract is part of the Ascion ecosystem.
// It facilitates the integration of blockchain technology
// into the Ascion game, providing secure and efficient
// management of in-game assets.
// Visit https://ascion.space for more information.

pragma solidity ^0.8.24;

import "@openzeppelin/contracts/utils/Context.sol";

/**
 * @dev Context variant with ERC2771 support and upgradeable trusted forwarder.
 */
abstract contract AscionContextUpgradeable is Context {
  address public trustedForwarder;

  constructor(address _trustedForwarder) {
    trustedForwarder = _trustedForwarder;
  }

  function isTrustedForwarder(address forwarder) public view virtual returns (bool) {
    return forwarder == trustedForwarder;
  }

  function _upgradeTrustedForwarder(address _trustedForwarder) internal {
    trustedForwarder = _trustedForwarder;
  }

  function _msgSender() internal view virtual override returns (address sender) {
    if (isTrustedForwarder(msg.sender)) {
      // The assembly code is more direct than the Solidity version using `abi.decode`.
      /// @solidity memory-safe-assembly

      assembly {
        sender := shr(96, calldataload(sub(calldatasize(), 20)))
      }
    } else {
      return super._msgSender();
    }
  }

  function _msgData() internal view virtual override returns (bytes calldata) {
    if (isTrustedForwarder(msg.sender)) {
      return msg.data[:msg.data.length - 20];
    } else {
      return super._msgData();
    }
  }
}

// SPDX-License-Identifier: MIT
//
//    ###     ######   ######  ####  #######  ##    ##
//   ## ##   ##    ## ##    ##  ##  ##     ## ###   ##
//  ##   ##  ##       ##        ##  ##     ## ####  ##
// ##     ##  ######  ##        ##  ##     ## ## ## ##
// #########       ## ##        ##  ##     ## ##  ####
// ##     ## ##    ## ##    ##  ##  ##     ## ##   ###
// ##     ##  ######   ######  ####  #######  ##    ##
//
// This smart contract is part of the Ascion ecosystem.
// It facilitates the integration of blockchain technology
// into the Ascion game, providing secure and efficient
// management of in-game assets.
// Visit https://ascion.space for more information.

pragma solidity ^0.8.24;

import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
import "@openzeppelin/contracts/utils/introspection/ERC165.sol";
import "./AscionContextUpgradeable.sol";
import "./IAscionCurrency.sol";
import "./Roles.sol";


contract AscionCurrency is AscionContextUpgradeable, ERC20, ERC20Burnable, AccessControl, IAscionCurrency, Roles {

    uint256 public feeBps;
    uint256 public feeFixed;
    uint256 public feeCap;
    address public feeRecipient;

    /**
     * @dev Initializes the contract setting the initial roles and fee recipient.
     * @param defaultAdmin The address to be granted the DEFAULT_ADMIN_ROLE.
     * @param minter The address to be granted the MINTER_ROLE.
     * @param _forwarder The address of the trusted forwarder.
     */
    constructor(address defaultAdmin, address minter, address _forwarder) ERC20("Ascion", "ASC") AscionContextUpgradeable(_forwarder) {
        feeRecipient = _msgSender();
        _grantRole(DEFAULT_ADMIN_ROLE, defaultAdmin);
        _grantRole(MINTER_ROLE, minter);
    }

    /**
     * @dev Mints tokens to a specified address. Caller must have MINTER_ROLE.
     * @param _to The address to receive the minted tokens.
     * @param _amount The amount of tokens to mint.
     */
    function mint(address _to, uint256 _amount) public onlyRole(MINTER_ROLE) {
        _mint(_to, _amount);
    }

    /**
     * @dev Transfers tokens to a recipient with a reference. Emits TransferRef event.
     * @param recipient The address to receive the tokens.
     * @param amount The amount of tokens to transfer.
     * @param ref The reference number associated with the transfer.
     * @return True if the transfer was successful.
     */
    function transferWithRef(address recipient, uint256 amount, uint256 ref) external returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        emit TransferRef(_msgSender(), recipient, amount, ref);
        return true;
    }

    /**
     * @dev Airdrops tokens to multiple addresses. Caller must have DEFAULT_ADMIN_ROLE or MANAGER_ROLE.
     * @param addresses The addresses to receive the tokens.
     * @param amounts The amounts of tokens to be transferred to each address.
     */
    function airdrop(address[] calldata addresses, uint256[] calldata amounts) external {
        bool isAdmin = hasRole(DEFAULT_ADMIN_ROLE, _msgSender());
        bool isManager = hasRole(MANAGER_ROLE, _msgSender());

        require(isAdmin || isManager, "Airdrop requires admin or manager role.");
        require(addresses.length > 0, "No recipients provided.");
        require(amounts.length == addresses.length, "Mismatched addresses and amounts.");

        address from = _msgSender();
        for (uint256 i = 0; i < addresses.length; i++) {
            require(addresses[i] != address(0), "Invalid address.");
            require(amounts[i] > 0, "Invalid amount.");
            _transfer(from, addresses[i], amounts[i] * (10**18));
        }
    }

    /**
     * @dev Transfers the DEFAULT_ADMIN_ROLE to a new address.
     * @param _newOwner The address to receive the DEFAULT_ADMIN_ROLE.
     */
    function transferOwnershipControl(address _newOwner) external onlyRole(DEFAULT_ADMIN_ROLE) {
        require(_newOwner != address(0), "Invalid new owner address.");
        _grantRole(DEFAULT_ADMIN_ROLE, _newOwner);
        _revokeRole(DEFAULT_ADMIN_ROLE, _msgSender());
    }

/**
     * @dev Grants a role to an account. Caller must have DEFAULT_ADMIN_ROLE or MANAGER_ROLE.
     * @param _role The role to be granted.
     * @param _account The address to receive the role.
     */
    function grantRole(bytes32 _role, address _account) public virtual override {
        bool isAdmin = hasRole(DEFAULT_ADMIN_ROLE, _msgSender());
        bool isManager = hasRole(MANAGER_ROLE, _msgSender());

        require(isAdmin || isManager, "Role granting requires admin or manager role.");

        if (_role == DEFAULT_ADMIN_ROLE || _role == MANAGER_ROLE) {
            require(isAdmin, "Only admin can grant admin or manager role.");
        }

        _grantRole(_role, _account);
    }

    /**
     * @dev Batch transfers tokens to multiple addresses.
     * @param recipients The addresses to receive the tokens.
     * @param amounts The amounts of tokens to be transferred to each address.
     * @return True if the transfers were successful.
     */
    function batchTransfer(address[] calldata recipients, uint256[] calldata amounts) external returns (bool) {
        return _batchTransfer(recipients, amounts, false);
    }

    /**
     * @dev Batch transfers tokens to multiple addresses with references.
     * @param recipients The addresses to receive the tokens.
     * @param amounts The amounts of tokens to be transferred to each address.
     * @param refs The reference numbers associated with each transfer.
     * @return True if the transfers were successful.
     */
    function _batchTransferWithRefs(address[] calldata recipients, uint256[] calldata amounts, uint256[] calldata refs, bool withFee) private returns (bool) {
        require(recipients.length > 0, "No recipients provided.");
        require(recipients.length == amounts.length, "Mismatched recipients and amounts.");
        require(recipients.length == refs.length, "Mismatched recipients and refs.");

        for (uint256 i = 0; i < recipients.length; i++) {
            require(recipients[i] != address(0), "Invalid recipient address.");
            require(amounts[i] > 0, "Invalid transfer amount.");

            if (withFee) {
                transferWithFee(recipients[i], amounts[i]);
            } else {
                transfer(recipients[i], amounts[i]);
            }

            if (refs[i] > 0) {
                emit TransferRef(_msgSender(), recipients[i], amounts[i], refs[i]);
            }
        }

        emit BatchTransferRef(_msgSender(), recipients, amounts, refs);
        return true;
    }

    /**
     * @dev Batch transfers tokens to multiple addresses with fees.
     * @param recipients The addresses to receive the tokens.
     * @param amounts The amounts of tokens to be transferred to each address.
     * @return True if the transfers were successful.
     */
    function batchTransferWithFees(address[] calldata recipients, uint256[] calldata amounts) external returns (bool) {
        return _batchTransfer(recipients, amounts, true);
    }

    /**
     * @dev Batch transfers tokens to multiple addresses with references.
     * @param recipients The addresses to receive the tokens.
     * @param amounts The amounts of tokens to be transferred to each address.
     * @param refs The reference numbers associated with each transfer.
     * @return True if the transfers were successful.
     */
    function batchTransferWithRefs(address[] calldata recipients, uint256[] calldata amounts, uint256[] calldata refs) external returns (bool) {
        return _batchTransferWithRefs(recipients, amounts, refs, true);
    }

    /**
     * @dev Batch transfers tokens to multiple addresses with fees and references.
     * @param recipients The addresses to receive the tokens.
     * @param amounts The amounts of tokens to be transferred to each address.
     * @param refs The reference numbers associated with each transfer.
     * @return True if the transfers were successful.
     */
    function batchTransferWithFeesRefs(address[] calldata recipients, uint256[] calldata amounts, uint256[] calldata refs) external returns (bool) {
        return _batchTransferWithRefs(recipients, amounts, refs, true);
    }

    /**
     * @dev Internal function for batch transfers.
     * @param recipients The addresses to receive the tokens.
     * @param amounts The amounts of tokens to be transferred to each address.
     * @param withFee Boolean indicating if fees should be applied to each transfer.
     * @return True if the transfers were successful.
     */
    function _batchTransfer(address[] calldata recipients, uint256[] calldata amounts, bool withFee) private returns (bool) {
        require(recipients.length > 0, "No recipients");
        require(recipients.length == amounts.length, "amounts argument size mismatched");

        for (uint256 i = 0; i < recipients.length; i++) {
            if (withFee) {
                transferWithFee(recipients[i], amounts[i]);
            } else {
                transfer(recipients[i], amounts[i]);
            }
        }

        return true;
    }

    /**
     * @dev Burns tokens from the caller's account with a fee.
     * @param amount The amount of tokens to burn.
     * @return True if the burn was successful.
     */
    function burnWithFee(uint256 amount) external returns (bool) {
        _transferWithFee(address(0), amount, true);

        return true;
    }

    /**
     * @dev Transfers tokens to a recipient with a fee.
     * @param recipient The address to receive the tokens.
     * @param amount The amount of tokens to transfer.
     * @return True if the transfer was successful.
     */
    function transferWithFee(address recipient, uint256 amount) public returns (bool) {
        _transferWithFee(recipient, amount, false);

        return true;
    }

    /**
     * @dev Transfers tokens to a recipient with a fee and a reference. Emits TransferRef event.
     * @param recipient The address to receive the tokens.
     * @param amount The amount of tokens to transfer.
     * @param ref The reference number associated with the transfer.
     * @return True if the transfer was successful.
     */
    function transferWithFeeRef(address recipient, uint256 amount, uint256 ref) external returns (bool) {
        transferWithFee(recipient, amount);
        emit TransferRef(_msgSender(), recipient, amount, ref);
        return true;
    }

    /**
     * @dev Internal function to transfer tokens with a fee.
     * @param recipient The address to receive the tokens.
     * @param amount The amount of tokens to transfer.
     * @param isBurn Boolean indicating if the transfer is a burn.
     */
    function _transferWithFee(address recipient, uint256 amount, bool isBurn) private {
        uint256 senderBalance = balanceOf(_msgSender());
        require(feeRecipient != address(0), "Fee recipient not set, cannot use transferWithFee");
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance.");

        uint256 percentageFee = (amount * feeBps / 10000) + feeFixed;
        uint256 fee = percentageFee <= feeCap ? percentageFee : feeCap;

        _transfer(_msgSender(), feeRecipient, fee);

        if (isBurn) {
            _burn(_msgSender(), amount - fee);
        } else {
            _transfer(_msgSender(), recipient, amount - fee);
        }
    }

    /**
     * @dev Sets the fees for transfers. Caller must have DEFAULT_ADMIN_ROLE or MANAGER_ROLE.
     * @param recipient The address to receive the fees.
     * @param _feeBps The fee in basis points (bps).
     * @param _feeFixed The fixed fee amount.
     * @param _feeCap The maximum fee amount.
     */
    function setFees(address recipient, uint256 _feeBps, uint256 _feeFixed, uint256 _feeCap) external {
        bool isAdmin = hasRole(DEFAULT_ADMIN_ROLE, _msgSender());
        bool isManager = hasRole(MANAGER_ROLE, _msgSender());

        require(isAdmin || isManager, "Setting fees requires admin or manager role.");
        require(recipient != address(0), "Invalid fee recipient address.");
        require(_feeBps <= 10000, "Fee basis points exceed maximum.");
        require(_feeCap >= _feeFixed, "Fee cap should be greater than or equal to fixed fee.");

        feeRecipient = recipient;
        feeBps = _feeBps;
        feeFixed = _feeFixed;
        feeCap = _feeCap;
    }

    /**
     * @dev Upgrades the trusted forwarder. Caller must have DEFAULT_ADMIN_ROLE or MANAGER_ROLE.
     * @param _newTrustedForwarder The address of the new trusted forwarder.
     */
    function upgradeTrustedForwarder(address _newTrustedForwarder) external {
        bool isAdmin = hasRole(DEFAULT_ADMIN_ROLE, _msgSender());
        bool isManager = hasRole(MANAGER_ROLE, _msgSender());

        require(isAdmin || isManager, "Role granting requires admin or manager role.");

        _upgradeTrustedForwarder(_newTrustedForwarder);
    }

    /**
     * @dev Returns the message sender. Overridden to support meta-transactions.
     * @return The address of the message sender.
     */
    function _msgSender() internal view override(Context, AscionContextUpgradeable) returns (address) {
        return super._msgSender();
    }

    /**
     * @dev Returns the message data. Overridden to support meta-transactions.
     * @return The calldata of the message.
     */
    function _msgData() internal view override(Context, AscionContextUpgradeable) returns (bytes calldata) {
        return super._msgData();
    }

    /**
     * @dev Returns true if the contract supports the given interface.
     * @param interfaceId The interface identifier, as specified in ERC-165.
     * @return True if the contract supports the given interface.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(AccessControl, IERC165) returns (bool) {
        return interfaceId == type(IAscionCurrency).interfaceId || super.supportsInterface(interfaceId);
    }
}

// SPDX-License-Identifier: MIT
//
//    ###     ######   ######  ####  #######  ##    ##
//   ## ##   ##    ## ##    ##  ##  ##     ## ###   ##
//  ##   ##  ##       ##        ##  ##     ## ####  ##
// ##     ##  ######  ##        ##  ##     ## ## ## ##
// #########       ## ##        ##  ##     ## ##  ####
// ##     ## ##    ## ##    ##  ##  ##     ## ##   ###
// ##     ##  ######   ######  ####  #######  ##    ##
//
// This smart contract is part of the Ascion ecosystem.
// It facilitates the integration of blockchain technology
// into the Ascion game, providing secure and efficient
// management of in-game assets.
// Visit https://ascion.space for more information.

pragma solidity ^0.8.24;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/utils/introspection/IERC165.sol";

interface IAscionCurrency is IERC20, IERC165  {
    // events
    event TransferRef(address indexed sender, address indexed recipient, uint256 amount, uint256 ref);
    event BatchTransferRef(address indexed sender, address[] recipients, uint256[] amounts, uint256[] refs);

    // autogenerated getters
    function feeBps() external view returns (uint);
    function feeFixed() external view returns (uint);
    function feeCap() external view returns (uint);
    function feeRecipient() external view returns (address);

    // functions
    function mint(address _to, uint256 _amount) external;
    function transferWithRef(address recipient, uint256 amount, uint256 ref) external returns (bool);
    function batchTransfer(address[] calldata recipients, uint256[] calldata amounts) external returns (bool);
    function batchTransferWithRefs(address[] calldata recipients, uint256[] calldata amounts, uint256[] calldata refs) external returns (bool);
    function batchTransferWithFees(address[] calldata recipients, uint256[] calldata amounts) external returns (bool);
    function batchTransferWithFeesRefs(address[] calldata recipients, uint256[] calldata amounts, uint256[] calldata refs) external returns (bool);
    function burnWithFee(uint256 amount) external returns (bool);
    function transferWithFee(address recipient, uint256 amount) external returns (bool);
    function transferWithFeeRef(address recipient, uint256 amount, uint256 ref) external returns (bool);
    function setFees(address recipient, uint _feeBps, uint _feeFixed, uint _feeCap) external;
    function transferOwnershipControl(address _newOwner) external;
}

// SPDX-License-Identifier: MIT
//
//    ###     ######   ######  ####  #######  ##    ##
//   ## ##   ##    ## ##    ##  ##  ##     ## ###   ##
//  ##   ##  ##       ##        ##  ##     ## ####  ##
// ##     ##  ######  ##        ##  ##     ## ## ## ##
// #########       ## ##        ##  ##     ## ##  ####
// ##     ## ##    ## ##    ##  ##  ##     ## ##   ###
// ##     ##  ######   ######  ####  #######  ##    ##
//
// This smart contract is part of the Ascion ecosystem.
// It facilitates the integration of blockchain technology
// into the Ascion game, providing secure and efficient
// management of in-game assets.
// Visit https://ascion.space for more information.

pragma solidity ^0.8.24;

contract Roles {
  bytes32 internal constant MINTER_ROLE = keccak256("ASCION_MINTER_ROLE");
  bytes32 internal constant MANAGER_ROLE = keccak256("ASCION_MANAGER_ROLE");
  bytes32 internal constant PLAYER_ROLE = keccak256("ASCION_PLAYER_ROLE");
}

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