/*
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 Earn $GIZA by holding $GIZA2!

 https://www.greatpyramid2.com/
 https://twitter.com/Giza2ETH
 https://t.me/GIZA2ETH

*/
//SPDX-License-Identifier: MIT
 
pragma solidity ^0.8.10;
 
library SafeMath {
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
 
        return c;
    }
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;
 
        return c;
    }
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }
 
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
 
        return c;
    }
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        // Solidity only automatically asserts when dividing by 0
        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;
    }
}
 
/**
 * ERC20 standard interface.
 */
interface IERC20 {
    function totalSupply() external view returns (uint256);
    function decimals() external view returns (uint8);
    function symbol() external view returns (string memory);
    function name() external view returns (string memory);
    function getOwner() external view returns (address);
    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);
}
 
 
/**
 * Allows for contract ownership along with multi-address authorization
 */
abstract contract Ownable {
    address internal owner;
 
    constructor(address _owner) {
        owner = _owner;
    }
 
    /**
     * Function modifier to require caller to be contract owner
     */
    modifier onlyOwner() {
        require(isOwner(msg.sender), "!OWNER"); _;
    }
 
    /**
     * Check if address is owner
     */
    function isOwner(address account) public view returns (bool) {
        return account == owner;
    }
 
    /**
     * Transfer ownership to new address. Caller must be owner. Leaves old owner authorized
     */
    function transferOwnership(address payable adr) public onlyOwner {
        owner = adr;
        emit OwnershipTransferred(adr);
    }
 
    event OwnershipTransferred(address owner);
}
 
interface IDEXFactory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}
 
interface IDEXRouter {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
 
    function addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);
 
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
 
    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
 
    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;
 
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}
 
interface IDividendDistributor {
    function setDistributionCriteria(uint256 _minPeriod, uint256 _minDistribution) external;
    function setRewardToken(address token) external;
    function transferStuckToken(address token, address recipient) external;
    function setShare(address shareholder, uint256 amount) external;
    function deposit() external payable;
    function process(uint256 gas) external;
}
 
contract DividendDistributor is IDividendDistributor {
    using SafeMath for uint256;
 
    address _token;
 
    struct Share {
        uint256 amount;
        uint256 totalExcluded;
        uint256 totalRealised;
    }
 
    IERC20 RewardToken = IERC20(0xc02D52Dd7d456eDE7f85F897329693c1c8036FCC);
    IDEXRouter router;
 
    address[] shareholders;
    mapping (address => uint256) shareholderIndexes;
    mapping (address => uint256) shareholderClaims;
 
    mapping (address => Share) public shares;
 
    uint256 public totalShares;
    uint256 public totalDividends;
    uint256 public totalDistributed;
    uint256 public dividendsPerShare;
    uint256 public dividendsPerShareAccuracyFactor = 10 ** 36;
 
    uint256 public minPeriod = 1 hours;
    uint256 public minDistribution = 1 * (10 ** 8);
 
    uint256 currentIndex;
 
    bool initialized;
    modifier initialization() {
        require(!initialized);
        _;
        initialized = true;
    }
 
    modifier onlyToken() {
        require(msg.sender == _token); _;
    }
 
    constructor (address _router) {
        router = IDEXRouter(_router);
        _token = msg.sender;
    }
 
    function setRewardToken(address token) external override onlyToken {
        RewardToken = IERC20(token);
    }
 
    function transferStuckToken(address IERC20Address, address recipient) public onlyToken {
        uint256 _contractBalance = IERC20(IERC20Address).balanceOf(address(this));
        payable(recipient).transfer(_contractBalance);
    }
 
    function setDistributionCriteria(uint256 _minPeriod, uint256 _minDistribution) external override onlyToken {
        minPeriod = _minPeriod;
        minDistribution = _minDistribution;
    }
 
    function setShare(address shareholder, uint256 amount) external override onlyToken {
        if(shares[shareholder].amount > 0){
            distributeDividend(shareholder);
        }
 
        if(amount > 0 && shares[shareholder].amount == 0){
            addShareholder(shareholder);
        }else if(amount == 0 && shares[shareholder].amount > 0){
            removeShareholder(shareholder);
        }
 
        totalShares = totalShares.sub(shares[shareholder].amount).add(amount);
        shares[shareholder].amount = amount;
        shares[shareholder].totalExcluded = getCumulativeDividends(shares[shareholder].amount);
    }
 
    function deposit() external payable override onlyToken {
        uint256 balanceBefore = RewardToken.balanceOf(address(this));
 
        address[] memory path = new address[](2);
        path[0] = router.WETH();
        path[1] = address(RewardToken);
 
        router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: msg.value}(
            0,
            path,
            address(this),
            block.timestamp
        );
 
        uint256 amount = RewardToken.balanceOf(address(this)).sub(balanceBefore);
 
        totalDividends = totalDividends.add(amount);
        dividendsPerShare = dividendsPerShare.add(dividendsPerShareAccuracyFactor.mul(amount).div(totalShares));
    }
 
    function process(uint256 gas) external override onlyToken {
        uint256 shareholderCount = shareholders.length;
 
        if(shareholderCount == 0) { return; }
 
        uint256 gasUsed = 0;
        uint256 gasLeft = gasleft();
 
        uint256 iterations = 0;
 
        while(gasUsed < gas && iterations < shareholderCount) {
            if(currentIndex >= shareholderCount){
                currentIndex = 0;
            }
 
            if(shouldDistribute(shareholders[currentIndex])){
                distributeDividend(shareholders[currentIndex]);
            }
 
            gasUsed = gasUsed.add(gasLeft.sub(gasleft()));
            gasLeft = gasleft();
            currentIndex++;
            iterations++;
        }
    }
 
    function shouldDistribute(address shareholder) internal view returns (bool) {
        return shareholderClaims[shareholder] + minPeriod < block.timestamp
                && getUnpaidEarnings(shareholder) > minDistribution;
    }
 
    function distributeDividend(address shareholder) internal {
        if(shares[shareholder].amount == 0){ return; }
 
        uint256 amount = getUnpaidEarnings(shareholder);
        if(amount > 0){
            totalDistributed = totalDistributed.add(amount);
            RewardToken.transfer(shareholder, amount);
            shareholderClaims[shareholder] = block.timestamp;
            shares[shareholder].totalRealised = shares[shareholder].totalRealised.add(amount);
            shares[shareholder].totalExcluded = getCumulativeDividends(shares[shareholder].amount);
        }
    }
 
    function claimDividend(address shareholder) external onlyToken{
        distributeDividend(shareholder);
    }
 
    function getUnpaidEarnings(address shareholder) public view returns (uint256) {
        if(shares[shareholder].amount == 0){ return 0; }
 
        uint256 shareholderTotalDividends = getCumulativeDividends(shares[shareholder].amount);
        uint256 shareholderTotalExcluded = shares[shareholder].totalExcluded;
 
        if(shareholderTotalDividends <= shareholderTotalExcluded){ return 0; }
 
        return shareholderTotalDividends.sub(shareholderTotalExcluded);
    }
 
    function getCumulativeDividends(uint256 share) internal view returns (uint256) {
        return share.mul(dividendsPerShare).div(dividendsPerShareAccuracyFactor);
    }
 
    function addShareholder(address shareholder) internal {
        shareholderIndexes[shareholder] = shareholders.length;
        shareholders.push(shareholder);
    }
 
    function removeShareholder(address shareholder) internal {
        shareholders[shareholderIndexes[shareholder]] = shareholders[shareholders.length-1];
        shareholderIndexes[shareholders[shareholders.length-1]] = shareholderIndexes[shareholder];
        shareholders.pop();
    }
}
 
contract GIZA2 is IERC20, Ownable {
    using SafeMath for uint256;
 
    address DEAD = 0x000000000000000000000000000000000000dEaD;
    address ZERO = 0x0000000000000000000000000000000000000000;
 
    string constant _name = "The Great Pyramid 2";
    string constant _symbol = "GIZA2";
    uint8 constant _decimals = 9;
 
    uint256 _totalSupply = 21_000_000 * (10 ** _decimals);
    uint256 public _maxTxAmount = (_totalSupply * 2) / 100; 
    uint256 public _maxWalletSize = (_totalSupply * 2) / 100; 
 
    mapping (address => uint256) _balances;
    mapping (address => mapping (address => uint256)) _allowances;
 
    mapping (address => bool) isFeeExempt;
    mapping (address => bool) isTxLimitExempt;
    mapping (address => bool) isDividendExempt;
 
    uint256 _buyLiquidityFee = 1;
    uint256 _buyReflectionFee = 5;
    uint256 _buyMarketingFee = 4;
    uint256 totalBuyFee = _buyLiquidityFee + _buyReflectionFee + _buyMarketingFee;
 
    uint256 _sellLiquidityFee = 1;
    uint256 _sellReflectionFee = 5;
    uint256 _sellMarketingFee = 4;
    uint256 totalSellFee = _sellLiquidityFee + _sellReflectionFee + _sellMarketingFee;
 
    address private marketingFeeReceiver = msg.sender; 
 
    IDEXRouter public router;
    address public pair;
 
    uint256 public launchedAt;
 
    DividendDistributor distributor;
    uint256 distributorGas = 500000;
 
    bool public swapEnabled = true;
    uint256 public swapThreshold = _totalSupply / 10000 * 3; // 0.03%
    bool inSwap;
    modifier swapping() { inSwap = true; _; inSwap = false; }
 
    constructor () Ownable(msg.sender) {
        router = IDEXRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        pair = IDEXFactory(router.factory()).createPair(router.WETH(), address(this));
        _allowances[address(this)][address(router)] = type(uint256).max;
 
        distributor = new DividendDistributor(address(router));
 
        address _owner = owner;
        isFeeExempt[_owner] = true;
        isTxLimitExempt[_owner] = true;
        isDividendExempt[pair] = true;
        isDividendExempt[DEAD] = true;
 
        _balances[_owner] = _totalSupply;
        emit Transfer(address(0), _owner, _totalSupply);
    }
 
    receive() external payable { }
 
    function totalSupply() external view override returns (uint256) { return _totalSupply; }
    function decimals() external pure override returns (uint8) { return _decimals; }
    function symbol() external pure override returns (string memory) { return _symbol; }
    function name() external pure override returns (string memory) { return _name; }
    function getOwner() external view override returns (address) { return owner; }
    function balanceOf(address account) public view override returns (uint256) { return _balances[account]; }
    function allowance(address holder, address spender) external view override returns (uint256) { return _allowances[holder][spender]; }
 
    function approve(address spender, uint256 amount) public override returns (bool) {
        _allowances[msg.sender][spender] = amount;
        emit Approval(msg.sender, spender, amount);
        return true;
    }
 
    function approveMax(address spender) external returns (bool) {
        return approve(spender, type(uint256).max);
    }
 
    function transfer(address recipient, uint256 amount) external override returns (bool) {
        return _transferFrom(msg.sender, recipient, amount);
    }
 
    function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
        if(_allowances[sender][msg.sender] != type(uint256).max){
            _allowances[sender][msg.sender] = _allowances[sender][msg.sender].sub(amount, "Insufficient Allowance");
        }
 
        return _transferFrom(sender, recipient, amount);
    }
 
    function _transferFrom(address sender, address recipient, uint256 amount) internal returns (bool) {
        if(inSwap){ return _basicTransfer(sender, recipient, amount); }
 
        if (recipient != pair && recipient != DEAD) {
            require(isTxLimitExempt[recipient] || amount <= _maxTxAmount, "Amount exceed limits");
            require(isTxLimitExempt[recipient] || _balances[recipient] + amount <= _maxWalletSize, "Transfer amount exceeds the bag size.");
        }
 
        if(shouldSwapBack()){ swapBack(); }
 
        if(!launched() && recipient == pair){ require(_balances[sender] > 0); launch(); }
 
        _balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
 
        uint256 amountReceived = shouldTakeFee(sender) ? takeFee(sender, recipient, amount) : amount;
        _balances[recipient] = _balances[recipient].add(amountReceived);
 
        if(!isDividendExempt[sender]){ try distributor.setShare(sender, _balances[sender]) {} catch {} }
        if(!isDividendExempt[recipient]){ try distributor.setShare(recipient, _balances[recipient]) {} catch {} }
 
        try distributor.process(distributorGas) {} catch {}
 
        emit Transfer(sender, recipient, amountReceived);
        return true;
    }
 
    function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) {
        _balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
        return true;
    }
 
    function shouldTakeFee(address sender) internal view returns (bool) {
        return !isFeeExempt[sender];
    }
 
    function getTotalFee(bool selling) public view returns (uint256) {
        if(selling) { return totalSellFee; }
        return totalBuyFee;
    }
 
    function takeFee(address sender, address receiver, uint256 amount) internal returns (uint256) {
        uint256 feeAmount = amount.mul(getTotalFee(receiver == pair)).div(100);
 
        _balances[address(this)] = _balances[address(this)].add(feeAmount);
        emit Transfer(sender, address(this), feeAmount);
 
        return amount.sub(feeAmount);
    }
 
    function shouldSwapBack() internal view returns (bool) {
        return msg.sender != pair
        && !inSwap
        && swapEnabled
        && _balances[address(this)] >= swapThreshold;
    }
 
    function swapBack() internal swapping {
        uint256 liquidityFee = _buyLiquidityFee + _sellLiquidityFee;
        uint256 reflectionFee = _buyReflectionFee + _sellReflectionFee;
        uint256 marketingFee = _buyMarketingFee + _sellMarketingFee;
 
        uint256 contractTokenBalance = balanceOf(address(this));
        uint256 amountToLiquify = contractTokenBalance.mul(liquidityFee).div(totalBuyFee + totalSellFee).div(2);
        uint256 amountToSwap = contractTokenBalance.sub(amountToLiquify);
 
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = router.WETH();
 
        uint256 balanceBefore = address(this).balance;
 
        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            amountToSwap,
            0,
            path,
            address(this),
            block.timestamp
        );
        uint256 amountBNB = address(this).balance.sub(balanceBefore);
        uint256 totalBNBFee = (totalBuyFee + totalSellFee).sub((liquidityFee).div(2));
        uint256 amountBNBLiquidity = amountBNB.mul(liquidityFee).div(totalBNBFee).div(2);
        uint256 amountBNBReflection = amountBNB.mul(reflectionFee).div(totalBNBFee);
        uint256 amountBNBMarketing = amountBNB.mul(marketingFee).div(totalBNBFee);
 
        try distributor.deposit{value: amountBNBReflection}() {} catch {}
        (bool success, /* bytes memory data */) = payable(marketingFeeReceiver).call{value: amountBNBMarketing, gas: 30000}("");
        require(success, "receiver rejected ETH transfer");
 
        if(amountToLiquify > 0){
            router.addLiquidityETH{value: amountBNBLiquidity}(
                address(this),
                amountToLiquify,
                0,
                0,
                marketingFeeReceiver,
                block.timestamp
            );
        }
    }
 
    function launched() internal view returns (bool) {
        return launchedAt != 0;
    }
 
    function launch() internal {
        launchedAt = block.number;
    }
 
    function setTxLimit(uint256 amount) external onlyOwner {
        require(amount >= _totalSupply / 1000);
        _maxTxAmount = amount;
    }
 
   function setMaxWallet(uint256 amount) external onlyOwner {
        require(amount >= _totalSupply / 1000 );
        _maxWalletSize = amount;
    }    
 
    function setIsDividendExempt(address holder, bool exempt) external onlyOwner {
        require(holder != address(this) && holder != pair);
        isDividendExempt[holder] = exempt;
        if(exempt){
            distributor.setShare(holder, 0);
        }else{
            distributor.setShare(holder, _balances[holder]);
        }
    }
 
    function setIsFeeExempt(address holder, bool exempt) external onlyOwner {
        isFeeExempt[holder] = exempt;
    }
 
    function setIsTxLimitExempt(address holder, bool exempt) external onlyOwner {
        isTxLimitExempt[holder] = exempt;
    }
 
    function setBuyFees(uint256 _liquidityFee, uint256 _reflectionFee, uint256 _marketingFee) external onlyOwner {
        _buyLiquidityFee = _liquidityFee;
        _buyReflectionFee = _reflectionFee;
        _buyMarketingFee = _marketingFee;
        totalBuyFee = _buyLiquidityFee.add(_buyReflectionFee).add(_buyMarketingFee);
    }
 
    function setSellFees(uint256 _liquidityFee, uint256 _reflectionFee, uint256 _marketingFee) external onlyOwner {
        _sellLiquidityFee = _liquidityFee;
        _sellReflectionFee = _reflectionFee;
        _sellMarketingFee = _marketingFee;
        totalSellFee = _sellLiquidityFee.add(_sellReflectionFee).add(_sellMarketingFee);
    }
 
    function setFeeReceiver(address _marketingFeeReceiver) external onlyOwner {
        marketingFeeReceiver = _marketingFeeReceiver;
    }
 
    function setSwapBackSettings(bool _enabled, uint256 _amount) external onlyOwner {
        swapEnabled = _enabled;
        swapThreshold = _amount;
    }
 
    function manualSend() external onlyOwner {
        uint256 contractETHBalance = address(this).balance;
        payable(marketingFeeReceiver).transfer(contractETHBalance);
    }
 
    function transferForeignToken(address _token) public onlyOwner {
        uint256 _contractBalance = IERC20(_token).balanceOf(address(this));
        payable(marketingFeeReceiver).transfer(_contractBalance);
    }
 
    function setDistributionCriteria(uint256 _minPeriod, uint256 _minDistribution) external onlyOwner {
        distributor.setDistributionCriteria(_minPeriod, _minDistribution);
    }
 
    function setRewardToken(address token) external onlyOwner {
        distributor.setRewardToken(token);
    }
 
    function transferStuckTokenDistributor(address IERC20Address) external onlyOwner {
        distributor.transferStuckToken(IERC20Address,owner);
    }
 
    function claimDividend() external {
        distributor.claimDividend(msg.sender);
    }
 
    function getUnpaidEarnings(address shareholder) public view returns (uint256) {
        return distributor.getUnpaidEarnings(shareholder);
    } 
 
    function setDistributorSettings(uint256 gas) external onlyOwner {
        require(gas < 750000);
        distributorGas = gas;
    }
 
    function getCirculatingSupply() public view returns (uint256) {
        return _totalSupply.sub(balanceOf(DEAD)).sub(balanceOf(ZERO));
    }
 
    function getLiquidityBacking(uint256 accuracy) public view returns (uint256) {
        return accuracy.mul(balanceOf(pair).mul(2)).div(getCirculatingSupply());
    }
 
    function isOverLiquified(uint256 target, uint256 accuracy) public view returns (bool) {
        return getLiquidityBacking(accuracy) > target;
    }
}