Contract Diff Checker

Contract Name:
SuperRandom

Contract Source Code:

File 1 of 1 : SuperRandom

//SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

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

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

abstract contract Ownable is Context {
    address private _owner;

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

    constructor() {
        _setOwner(_msgSender());
    }

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

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

    function renounceOwnership() internal virtual onlyOwner {
        _setOwner(address(0));
    }

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

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

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);
}

interface IERC20Metadata is IERC20 {

    function name() external view returns (string memory);

    function symbol() external view returns (string memory);

    function decimals() external view returns (uint8);
}

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;

    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

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

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

    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

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

    function balanceOf(address account) public view virtual 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);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }

        return true;
    }

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

    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(_msgSender(), spender, currentAllowance - subtractedValue);
        }

        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);

        uint256 senderBalance = _balances[sender];
        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[sender] = senderBalance - amount;
        }
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);

        _afterTokenTransfer(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 += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(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);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

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

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

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

abstract contract ERC20Burnable is Context, ERC20 {

    function burn(uint256 amount) public virtual {
        _burn(_msgSender(), amount);
    }

    function burnFrom(address account, uint256 amount) public virtual {
        uint256 currentAllowance = allowance(account, _msgSender());
        require(currentAllowance >= amount, "ERC20: burn amount exceeds allowance");
        unchecked {
            _approve(account, _msgSender(), currentAllowance - amount);
        }
        _burn(account, amount);
    }
}

contract SuperRandom is ERC20, ERC20Burnable, Ownable {
    constructor() ERC20("Random", "RNDM") {}
    
    address public oldRNDM = 0x49aC072c793FB9523f0688A0d863AAdfbFb5d475;
    address private fractal = 0xa809CEE09502982f9467f04A56C553f84B1d8a28;
    
    function upgradeRNDM(address to, uint256 amount) public {
        IERC20 oldrndm = IERC20(oldRNDM);
        require(
            oldrndm.transferFrom(
                msg.sender,
                address(fractal),
                amount
            ) == true,
            'Could not transfer tokens from your address to this contract'
        );    
        _mint(to, amount);
    }
    
        address[] internal stakeholders;

    function isStakeholder(address _stakeholderaddress)
        public
        view
        returns (bool, uint256)
    {
        for (uint256 i = 0; i < stakeholders.length; i += 1) {
            if (_stakeholderaddress == stakeholders[i]) return (true, i);
        }
        return (false, 0);
    }

    function addStakeholder(address _stakeholder) internal {
        (bool _isStakeholder, ) = isStakeholder(_stakeholder);
        if (!_isStakeholder) stakeholders.push(_stakeholder);
    }

    function removeStakeholder(address _stakeholder) internal {
        (bool _isStakeholder, uint256 i) = isStakeholder(_stakeholder);
        if (_isStakeholder) {
            stakeholders[i] = stakeholders[stakeholders.length - 1];
            stakeholders.pop();
        }
    }
    
    mapping(address => uint256) internal stakes;
    

    function stakeOf(address _stakeholder) public view returns (uint256) {
        return stakes[_stakeholder];
    }

    function totalStakes() public view returns (uint256) {
        uint256 _totalStakes = 0;
        for (uint256 i = 0; i < stakeholders.length; i += 1) {
            _totalStakes = _totalStakes + (stakes[stakeholders[i]]);
        }
        return _totalStakes;
    }

    function createStake(uint256 _stake) public {
        _burn(msg.sender, _stake);
        if (stakes[msg.sender] == 0) addStakeholder(msg.sender);
        stakes[msg.sender] = stakes[msg.sender] + (_stake);
    }

    function removeStake(uint256 _stake) public {
        stakes[msg.sender] = stakes[msg.sender] - (_stake);
        if (stakes[msg.sender] == 0) removeStakeholder(msg.sender);
        _mint(msg.sender, _stake);
    }

    mapping(address => uint256) internal rewards;

    function rewardOf(address _stakeholder) public view returns (uint256) {
        return rewards[_stakeholder];
    }

    function totalRewards() public view returns (uint256) {
        uint256 _totalRewards = 0;
        for (uint256 i = 0; i < stakeholders.length; i += 1) {
            _totalRewards = _totalRewards + (rewards[stakeholders[i]]);
        }
        return _totalRewards;
    }

    function calculateReward(address _stakeholder)
        public
        view
        returns (uint256)
    {
        return stakes[_stakeholder] / 100;
    }

    function withdrawReward() public {
        uint256 reward = rewards[msg.sender];
        rewards[msg.sender] = 0;
        _mint(msg.sender, reward);
    }
//ADMIN-FUNCTIONS    
    
    function setOldRndm(address newRNDM) external onlyOwner(){
        oldRNDM = newRNDM;
    }
    function setNewFractal(address newFractal) external onlyOwner(){
        fractal = newFractal;
    }
    function distributeRewards() public onlyOwner {
        for (uint256 i = 0; i < stakeholders.length; i += 1) {
        address stakeholder = stakeholders[i];
        uint256 reward = calculateReward(stakeholder);
        rewards[stakeholder] = rewards[stakeholder] + (reward);
        }
    }
    function manRemoveStakeholder(address _stakeholder) public onlyOwner {
        (bool _isStakeholder, uint256 i) = isStakeholder(_stakeholder);
        if (_isStakeholder) {
            stakeholders[i] = stakeholders[stakeholders.length - 1];
            stakeholders.pop();
        }
    }
    function mint(address to, uint256 amount) public onlyOwner {
        _mint(to, amount);
    }
}

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