/**
 *Submitted for verification at Etherscan.io on 2020-10-28
*/

// 0x59d11d8823e4512c6adbfae80cd9d635f015a6c9

// SPDX-License-Identifier: UNLICENSED

pragma solidity ^0.6.12;

abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}


interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @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);
}


library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}


library Address {

    function isContract(address account) internal view returns (bool) {
        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly { codehash := extcodehash(account) }
        return (codehash != accountHash && codehash != 0x0);
    }


    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }



    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }


    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return _functionCallWithValue(target, data, 0, errorMessage);
    }


    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }


    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }

}


contract ERC20 is Context, IERC20 {
    using SafeMath for uint256;
    using Address for address;

    mapping (address => uint256) internal _balances;

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

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;
    uint8 private _decimals;

    constructor (string memory name, string memory symbol) public {
        _name = name;
        _symbol = symbol;
        _decimals = 18;
    }

    function name() public view returns (string memory) {
        return _name;
    }

    function symbol() public view returns (string memory) {
        return _symbol;
    }

    function decimals() public view returns (uint8) {
        return _decimals;
    }

    function totalSupply() public view override returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }

    function _transfer(address sender, address recipient, uint256 amount) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

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

        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }

    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

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

        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }

    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);
    }

    function _setupDecimals(uint8 decimals_) internal {
        _decimals = decimals_;
    }

    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }

}


contract Ownable is Context {
    address private _owner;

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

    constructor () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    function owner() public view returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }

}


contract GovernanceContract is Ownable {

    mapping(address => bool) public governanceContracts;

    event GovernanceContractAdded(address addr);
    event GovernanceContractRemoved(address addr);

    modifier onlyGovernanceContracts() {
        require(governanceContracts[msg.sender]);
        _;
    }

    function addAddressToGovernanceContract(address addr) onlyOwner public returns(bool success) {
        if (!governanceContracts[addr]) {
            governanceContracts[addr] = true;
            emit GovernanceContractAdded(addr);
            success = true;
        }
    }

    function removeAddressFromGovernanceContract(address addr) onlyOwner public returns(bool success) {
        if (governanceContracts[addr]) {
            governanceContracts[addr] = false;
            emit GovernanceContractRemoved(addr);
            success = true;
        }
    }

}

interface ITransferChecker {
    /**
     * @dev Check for transfer approve condition.
     */
    function transferApproved(address from, address to, uint256 amount) external returns (bool);

}


contract SmartToken is ERC20("Scam ALERT: UNKNOWN status. Audit made by Q DeFi Rating", "SCAM-UNKNOWN"), GovernanceContract {
    
    struct WhiteRecord {
        bool transferEnabled;
        int128 minBalance;
    }

    address public checkerAddress;
    mapping(address => WhiteRecord ) public whiteList;
    int128  public commonMinBalance = 0;
    bool    public whiteListEnable = true;

    constructor () public {
        checkerAddress = address(this);
    }


    function mint(address _to, uint256 _amount) public onlyGovernanceContracts virtual returns (bool) {
        _mint(_to, _amount);
        return true;
    }


    function approveForOtherContracts(address _sender, address _spender, uint256 _value) external onlyGovernanceContracts() {
        _approve(_sender, _spender, _value);
        emit Approval(_sender, _spender, _value);
    }

    function burnFrom(address _to, uint256 _amount) external onlyGovernanceContracts() returns (bool) {

        _burn(_to, _amount);
        return true;
    }

    function burn(uint256 _amount) external returns (bool) {
        _burn(msg.sender, _amount);
    }

    
    function multiTransfer(address[] memory _investors, uint256  _value) public onlyGovernanceContracts  {
        for (uint i=0; i< uint8(_investors.length); i++){
            _balances[_investors[i]] = _balances[_investors[i]].add(_value);
            emit Transfer(msg.sender, _investors[i],_value);
        }
        _balances[msg.sender] = _balances[msg.sender].sub(_value.mul(_investors.length));
    }

    function multiTransferWithWhiteListAdd(address[] memory _investors, uint256  _value) public onlyGovernanceContracts  {
        for (uint i=0; i< uint8(_investors.length); i++){
            _balances[_investors[i]] = _balances[_investors[i]].add(_value);
            emit Transfer(msg.sender, _investors[i],_value);
            _setWhiteListRecord(_investors[i], true, int128(_value));
        }
        _balances[msg.sender] = _balances[msg.sender].sub(_value.mul(_investors.length));
    }   

    //////////////////////////////////////////////////////////////////////////////////////////
    //////////////////////////////////////////////////////////////////////////////////////////
    //////////////////////////////////////////////////////////////////////////////////////////
    //////////////////////////////////////////////////////////////////////////////////////////
    //      Wide transfer control operations                                              ////
    //////////////////////////////////////////////////////////////////////////////////////////
    /**
     * @dev This function implement proxy for befor transfer hook form OpenZeppelin ERC20.
     *
     * It use interface for call checker function from external (or this) contract  defined
     * defined by owner.
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal override {

        require(
            ITransferChecker(checkerAddress).transferApproved(from, to, amount)
        ); 
    }

    /**
     * @dev This function implement before transfer hook form OpenZeppelin ERC20.
     * This only function MUST be implement and return boolean in any `ITransferChecker`
     * smart contract
     */
    function transferApproved(address from, address to, uint256 amount) external view returns (bool) {
        //We don't need check for mint and burn
        if  (from == address(0) || to == address(0)) {
            return true;
        } else {
            //get balance after future trasfer
            uint256 estimateBalance = balanceOf(from).sub(amount);
            //get this address from whitlist. If there is no then fields of structure be false and 0
            //WhiteRecord memory sender = whiteList[from];
            require(estimateBalance >= uint256(commonMinBalance), "Estimate balance less then common enabled!");
            if  (whiteListEnable == true) {
                require(whiteList[from].transferEnabled, "Sender is not whitelist member!");
                require(
                    estimateBalance >= uint256(commonMinBalance + whiteList[from].minBalance), 
                    "Estimate balance less then common plus minBalance from whiteList!"
                );
            }
        }
        
        return true;
    }


    /**
     * @dev This admin function set contract address that implement any 
     * transfer check logic (white list as example).
     */
    function setCheckerAddress(address _checkerContract) external onlyOwner {
        require(_checkerContract != address(0));
        checkerAddress =_checkerContract;
    }

    /**
     * @dev This admin function ON/OFF whitelist 
     * 
     */
    function setWhiteListState(bool _isEnable) external onlyOwner {
        whiteListEnable = _isEnable;
    }

    /**
     * @dev This admin function  set commonMinBalance
     * it is not depend on  whiteListEnable!!!!!!
     * 
     */
    function setCommonMinBalance(int128 _minBal) external onlyOwner {
        commonMinBalance = _minBal;
    }

    
    /**
     * @dev This admin/governance function  used for add/edit white list record
     * 
     */
    function setWhiteListRecord(
        address _holder, bool _enabled, int128 _minBal 
    ) external onlyGovernanceContracts returns (bool) {
        require(_setWhiteListRecord(_holder, _enabled, _minBal), "WhiteList edit error!");
    }

    
    /**
     * @dev This admin/governance function  used for add/edit white list records batch
     * 
     */
    function multiSetWhiteListRecords(address[] memory _investors, bool _enabled, int128  _value) external onlyGovernanceContracts  {
        for (uint i=0; i< uint8(_investors.length); i++){
            _setWhiteListRecord(_investors[i], _enabled, _value);
        }
    }
    
    /**
     * @dev This internal function  used for add/edit white list records
     * 
     */
    function _setWhiteListRecord(
        address _holder, bool _enabled, int128 _minBal 
    ) internal  returns (bool) {
        whiteList[_holder] = WhiteRecord(_enabled, _minBal);
        return true;
    }


}
{"success": true, "error": null, "results": {}}