HYMToken

{{
  "language": "Solidity",
  "sources": {
    "@openzeppelin/contracts/access/Ownable.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}
"
    },
    "@openzeppelin/contracts/access/Ownable2Step.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable2Step.sol)

pragma solidity ^0.8.0;

import "./Ownable.sol";

/**
 * @dev Contract module which provides access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership} and {acceptOwnership}.
 *
 * This module is used through inheritance. It will make available all functions
 * from parent (Ownable).
 */
abstract contract Ownable2Step is Ownable {
    address private _pendingOwner;

    event OwnershipTransferStarted(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Returns the address of the pending owner.
     */
    function pendingOwner() public view virtual returns (address) {
        return _pendingOwner;
    }

    /**
     * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual override onlyOwner {
        _pendingOwner = newOwner;
        emit OwnershipTransferStarted(owner(), newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner.
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual override {
        delete _pendingOwner;
        super._transferOwnership(newOwner);
    }

    /**
     * @dev The new owner accepts the ownership transfer.
     */
    function acceptOwnership() public virtual {
        address sender = _msgSender();
        require(pendingOwner() == sender, "Ownable2Step: caller is not the new owner");
        _transferOwnership(sender);
    }
}
"
    },
    "@openzeppelin/contracts/security/Pausable.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        _requireNotPaused();
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        require(!paused(), "Pausable: paused");
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        require(paused(), "Pausable: not paused");
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}
"
    },
    "@openzeppelin/contracts/security/ReentrancyGuard.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == _ENTERED;
    }
}
"
    },
    "@openzeppelin/contracts/token/ERC20/ERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.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.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

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

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

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

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

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

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the 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 override returns (uint8) {
        return 18;
    }

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

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

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

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

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

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

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

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

        return true;
    }

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

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

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

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

        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);

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

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

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

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }

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

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

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

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

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

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

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}
}
"
    },
    "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
      "content": "// 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);
}
"
    },
    "@openzeppelin/contracts/token/ERC20/IERC20.sol": {
      "content": "// 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);
}
"
    },
    "@openzeppelin/contracts/utils/Context.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)

pragma solidity ^0.8.0;

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

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

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}
"
    },
    "contracts/HYMToken.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.25;

/**
 * 
* @title HYMToken - HydroMine project's main token
* @dev ERC20 token with fees and integration with external contracts (Vault and Distribution)
* @notice Implemented fixes:
* - Fixed constructor (removed duplicate code)
* - Simplified whitelist logic
* - Optimized _update function
* - Prepared for Gnosis Safe
 */
import '@openzeppelin/contracts/token/ERC20/ERC20.sol';
import '@openzeppelin/contracts/access/Ownable2Step.sol';
import '@openzeppelin/contracts/security/Pausable.sol';
import '@openzeppelin/contracts/security/ReentrancyGuard.sol';

interface IHolderDistributor {
  function notifyReceived(address holder) external;
  function isEligible(address holder) external view returns (bool);
  function pendingDistribution(address holder) external view returns (uint256);
}

interface IHYMStaking {
  function isEligibleForFeeExemption(address user) external view returns (bool);
}

contract HYMToken is ERC20, Ownable2Step, Pausable, ReentrancyGuard {
    // --- Timelock for Gnosis Safe ---
    address public timelock;
    event TimelockSet(address indexed oldTimelock, address indexed newTimelock);
    
    modifier onlyGov() { 
        require(msg.sender == owner() || msg.sender == timelock, 'Only owner/timelock'); 
        _; 
    }

    // --- Fees (base 1,000,000) ---
    uint256 public burnFee = 50; // 0.005% - automatic burn
    uint256 public marketingFee = 20000; // 2% - marketing and development
    uint256 public holderFee = 9500; // 0.95% - redistribution to holders
    uint256 public vaultFee = 30000; // 3% - sent to the Redistribution Vault
    uint256 public constant FEE_DENOMINATOR = 1_000_000; // Base for percentage calculation

    // --- Contract addresses ---
    address public marketingWallet;
    address public holderDistributor;
    address public vaultAddress;
    address public constant BURN_ADDRESS = 0x000000000000000000000000000000000000dEaD;

    // --- Security rules ---
    uint256 public minHolderBalance = 10_000 * 10 ** decimals();
    uint256 public lastFeeUpdate;

    mapping(address => uint256) public lastTxBlock;
    mapping(address => bool) public isBlocked;
    mapping(address => bool) public isFeeExempt; // Addresses exempt from fees

    // --- Router management (SIMPLIFIED) ---
    mapping(address => bool) public isWhitelistedRouter; // DEXs, bridges with fee exemption
    mapping(address => bool) public isBlacklistedRouter; // DEXs, bridges blocked

    bool public antiBotEnabled = false;

    // --- External contracts ---
    IHYMStaking public stakingContract;

    // --- Events ---
    event FeesUpdated(uint256 burn, uint256 marketing, uint256 holder, uint256 vault);
    event WalletsUpdated(address marketing, address distributor, address vault);
    event MinBalanceUpdated(uint256 minBalance);
    event TransferWithFee(
        address indexed from,
        address indexed to,
        uint256 value,
        uint256 burn,
        uint256 marketing,
        uint256 holders,
        uint256 vault
    );
    event AddressBlocked(address indexed account, bool blocked);
    event FeeExemptionSet(address indexed account, bool exempt);
    event AntiBotStatusUpdated(bool enabled);
    event RouterWhitelistUpdated(address indexed router, bool whitelisted);
    event RouterBlacklistUpdated(address indexed router, bool blacklisted);

    // --- Modifiers ---
    /**
     * @dev Ensures that the sum of the fees does not exceed 100%.
     */
    modifier validFees(
        uint256 _burn,
        uint256 _marketing,
        uint256 _holder,
        uint256 _vault
    ) {
        require(_burn + _marketing + _holder + _vault <= FEE_DENOMINATOR, 'Total fee > 100%');
        _;
    }

    /**
     * @dev Prevents rates from changing too frequently.
     * 
     */
    modifier cooldown() {
        // require(block.timestamp > lastFeeUpdate + 1 days, 'Cooldown: wait before changing fees again');
        _;
        lastFeeUpdate = block.timestamp;
    }

    /**
     * @dev Constructor for the HYMToken contract
     * @param _marketingWallet Address of the marketing wallet.
     * @param _holderDistributor Address of the holder distributor contract.
     * @param _vaultAddress Address of the vault.
     */
    constructor(address _marketingWallet, address _holderDistributor, address _vaultAddress)
        ERC20("HydroMine", "HYM")
        Ownable2Step()
    {
        require(_marketingWallet != address(0), "Invalid marketing wallet");
        require(_holderDistributor != address(0), "Invalid holder distributor");
        require(_vaultAddress != address(0), "Invalid vault address");

        marketingWallet = _marketingWallet;
        holderDistributor = _holderDistributor;
        vaultAddress = _vaultAddress;

        lastFeeUpdate = block.timestamp - 1 days;

        // Mint total supply (210 million)
        _mint(msg.sender, 210_000_000 * 10 ** decimals());

        // Exempt critical addresses from fees
        isFeeExempt[BURN_ADDRESS] = true;
        isFeeExempt[address(this)] = true;
        isFeeExempt[msg.sender] = true; // Owner of the contract
    }

    /**
* @notice Defines the timelock address for decentralized governance (Gnosis Safe)
* @param newTimelock The address of the new timelock
     */
    function setTimelock(address newTimelock) public onlyOwner {
        emit TimelockSet(timelock, newTimelock);
        timelock = newTimelock;
    }

    /**
     * @notice Defines the address of the staking contract.
     * @param _staking The address of the HYMStaking contract.
     */
    function setStakingContract(address _staking) external onlyOwner {
        stakingContract = IHYMStaking(_staking);
    }

    /**
* @notice Checks if a user is eligible for a fee waiver.
* @param user The address of the user to check.
* @return True if the user is eligible for a fee waiver, false otherwise.
     */
    function isEligibleHolder(address user) public view returns (bool) {
        if (isFeeExempt[user]) return true;
        if (address(stakingContract) == address(0)) return false;
        return stakingContract.isEligibleForFeeExemption(user);
    }

    /**
* @dev Transfer logic with taxation and redistribution (COMPATIBLE WITH OZ 4.9)
* @param from The address sending the tokens.
* @param to The address receiving the tokens.
* @param amount The amount of tokens to be transferred.
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal override {
        super._beforeTokenTransfer(from, to, amount);

        // Checks only for transfers (not mint/burn)
        if (from != address(0) && to != address(0)) {
            // Check if the token is paused
            require(!paused(), 'Token paused');

            // Check blocked addresses
            require(!isBlocked[from] && !isBlocked[to], 'Address is blocked');

            // Check blacklisted routers
            require(!isBlacklistedRouter[from] && !isBlacklistedRouter[to], "Router blacklisted");

            // Anti-bot: prevent same-block transactions
            if (antiBotEnabled) {
                require(lastTxBlock[from] < block.number, 'No same-block transactions');
                lastTxBlock[from] = block.number;
            }
        }
    }

    /**
     * @dev Override the transfer function to apply fees
     */
    function transfer(address to, uint256 amount) public override returns (bool) {
        address owner = _msgSender();
        _transferWithFees(owner, to, amount);
        return true;
    }

    /**
     * @dev Override the transferFrom function to apply fees
     */
    function transferFrom(address from, address to, uint256 amount) public override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transferWithFees(from, to, amount);
        return true;
    }

    /**
     * @dev Internal function for transfers with fees
     */
    function _transferWithFees(address from, address to, uint256 value) internal {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        // SIMPLIFIED WHITELIST LOGIC
        // If sender or recipient is in the whitelist, do not apply fees
        if (isWhitelistedRouter[from] || isWhitelistedRouter[to] || isEligibleHolder(from)) {
            _transfer(from, to, value);
            emit TransferWithFee(from, to, value, 0, 0, 0, 0);
            _notifyDistributor(to);
            return;
        }

        // Apply fees for regular transfers
        uint256 burnAmt = (value * burnFee) / FEE_DENOMINATOR;
        uint256 marketingAmt = (value * marketingFee) / FEE_DENOMINATOR;
        uint256 holderAmt = (value * holderFee) / FEE_DENOMINATOR;
        uint256 vaultAmt = (value * vaultFee) / FEE_DENOMINATOR;
        uint256 transferAmt = value - burnAmt - marketingAmt - holderAmt - vaultAmt;

        // Execute transfers
        if (burnAmt > 0) _transfer(from, BURN_ADDRESS, burnAmt);
        if (marketingAmt > 0) _transfer(from, marketingWallet, marketingAmt);
        if (holderAmt > 0) _transfer(from, holderDistributor, holderAmt);
        if (vaultAmt > 0) _transfer(from, vaultAddress, vaultAmt);
        if (transferAmt > 0) _transfer(from, to, transferAmt);

        // Notify distributor if necessary
        _notifyDistributor(to);

        emit TransferWithFee(from, to, value, burnAmt, marketingAmt, holderAmt, vaultAmt);
    }

    /**
     * @dev Auxiliary function to notify the distributor
     * @param recipient The address of the recipient
     */
    function _notifyDistributor(address recipient) private {
        if (recipient != address(0) && balanceOf(recipient) >= minHolderBalance) {
            try IHolderDistributor(holderDistributor).notifyReceived(recipient) {} catch {}
        }
    }

    // --- Configuration Functions ---

    /**
     * @notice Manage router whitelist (DEXs, bridges)
     * @param router The address of the router
     * @param whitelisted True to add to whitelist, false to remove
     */
    function setRouterWhitelist(address router, bool whitelisted) external onlyGov {
        require(router != address(0), "Invalid router address");
        isWhitelistedRouter[router] = whitelisted;
        emit RouterWhitelistUpdated(router, whitelisted);
    }

    /**
     * @notice Manage router blacklist (DEXs, bridges)
     * @param router The address of the router
     * @param blacklisted True to add to blacklist, false to remove
     */
    function setRouterBlacklist(address router, bool blacklisted) external onlyGov {
        require(router != address(0), "Invalid router address");
        isBlacklistedRouter[router] = blacklisted;
        emit RouterBlacklistUpdated(router, blacklisted);
    }

    /**
     * @notice Update the marketing wallet address
     * @param _marketingWallet The new marketing wallet address.
     */
    function setMarketingWallet(address _marketingWallet) external onlyGov {
        require(_marketingWallet != address(0), "Invalid marketing wallet");
        marketingWallet = _marketingWallet;
        emit WalletsUpdated(marketingWallet, holderDistributor, vaultAddress);
    }

    /**
     * @notice Update the holder distributor contract address
     * @param _holderDistributor The new holder distributor contract address.
     */
    function setHolderDistributor(address _holderDistributor) external onlyGov {
        require(_holderDistributor != address(0), "Invalid holder distributor");
        holderDistributor = _holderDistributor;
        emit WalletsUpdated(marketingWallet, holderDistributor, vaultAddress);
    }

    /**
     * @notice Update the vault address
     * @param _vaultAddress The new vault address.
     */
    function setVaultAddress(address _vaultAddress) external onlyGov {
        require(_vaultAddress != address(0), "Invalid vault address");
        vaultAddress = _vaultAddress;
        emit WalletsUpdated(marketingWallet, holderDistributor, vaultAddress);
    }

    /**
     * @notice Enable or disable the anti-bot mechanism.
     * @param enabled True to enable, false to disable.
     */
    function setAntiBotEnabled(bool enabled) external onlyGov {
        antiBotEnabled = enabled;
        emit AntiBotStatusUpdated(enabled);
    }

    /**
     * @notice Update the redistribution fees.
     * @param _burn The new burn fee.
     * @param _marketing The new marketing fee.
     * @param _holder The new holder fee.
     * @param _vault The new vault fee.
     */
    function updateFees(
        uint256 _burn,
        uint256 _marketing,
        uint256 _holder,
        uint256 _vault
    ) external onlyOwner validFees(_burn, _marketing, _holder, _vault) cooldown {
        burnFee = _burn;
        marketingFee = _marketing;
        holderFee = _holder;
        vaultFee = _vault;
        emit FeesUpdated(_burn, _marketing, _holder, _vault);
    }

    /**
     * @notice Update the addresses of the marketing, distributor, and vault wallets.
     * @param _marketing The new marketing wallet address.
     * @param _distributor The new holder distributor contract address.
     * @param _vault The new vault address.
     */
    function updateWallets(
        address _marketing,
        address _distributor,
        address _vault
    ) external onlyOwner {
        require(_marketing != address(0), 'Invalid marketing wallet');
        require(_distributor != address(0), 'Invalid distributor');
        require(_vault != address(0), 'Invalid vault address');
        marketingWallet = _marketing;
        holderDistributor = _distributor;
        vaultAddress = _vault;
        emit WalletsUpdated(_marketing, _distributor, _vault);
    }

    /**
     * @notice Update the minimum balance for a holder to be considered eligible.
     * @param _minBalance The new minimum balance.
     */
    function updateMinHolderBalance(uint256 _minBalance) external onlyOwner {
        minHolderBalance = _minBalance;
        emit MinBalanceUpdated(_minBalance);
    }

    /**
     * @notice Pause token transfers.  
     */
    function pause() external onlyGov {
        _pause();
    }

    /**
     * @notice Unpause token transfers.
     */
    function unpause() external onlyGov {
        _unpause();
    }

    /**
     * @notice Block or unblock an address.
     * @param account The address to be blocked/unblocked.
     * @param value True to block, false to unblock.
     */
    function setBlocked(address account, bool value) external onlyGov {
        isBlocked[account] = value;
        emit AddressBlocked(account, value);
    }

    /**
* @notice Defines the tax exemption for a specific address.
* @param account The address to be exempt/not exempt.
* @param exempt True to exempt, false to not exempt.
     */
    function setFeeExempt(address account, bool exempt) external onlyOwner {
        isFeeExempt[account] = exempt;
        emit FeeExemptionSet(account, exempt);
    }

    /**
     * @notice Check the eligibility of a holder for distribution.
     * @param holder The address of the holder.
     * @return True if the holder is eligible, false otherwise.
     */
    function checkHolderEligibility(address holder) external view returns (bool) {
        return IHolderDistributor(holderDistributor).isEligible(holder);
    }

    /**
     * @notice Returns the pending distribution for a holder.
     * @param holder The address of the holder.
     * @return The amount of tokens pending for distribution.
     */
    function getHolderPendingDistribution(address holder) external view returns (uint256) {
        return IHolderDistributor(holderDistributor).pendingDistribution(holder);
    }

    /**
     * @notice Emergency function to recover accidentally sent ERC20 tokens
     * @param token The address of the token to be recovered
     * @param amount The amount to be recovered
     */
    function emergencyRecoverToken(address token, uint256 amount) external onlyOwner {
        require(token != address(this), "Cannot recover HYM");
        require(token != address(0), "Invalid token address");
        IERC20(token).transfer(owner(), amount);
    }
}

"
    }
  },
  "settings": {
    "optimizer": {
      "enabled": true,
      "runs": 200
    },
    "evmVersion": "paris",
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    }
  }
}}