InfluenceHub.sol

// SPDX-License-Identifier: Unlicensed
 
pragma solidity ^0.6.2;
 
import "./DividendPayingToken.sol";
import "./SafeMath.sol";
import "./IterableMapping.sol";
import "./Ownable.sol";
import "./IUniswapV2Pair.sol";
import "./IUniswapV2Factory.sol";
import "./IUniswapV2Router.sol";
 
 // Dev: @FreezyEx
//https://github.com/FreezyEx
contract INFLHUB is ERC20, Ownable {
    using SafeMath for uint256;
 
    IUniswapV2Router02 public uniswapV2Router;
    address public immutable uniswapV2Pair;
    address public immutable deadAddress = 0x000000000000000000000000000000000000dEaD;
 
    mapping (address => bool) public _isBlacklisted;

    
    bool private swapping;
 
   INFLHUBDividendTracker public dividendTracker;
 
    address public liquidityWallet;
 
    uint256 public maxSellTransactionAmount = 1000000000000000 * (10**9);
    uint256 public swapTokensAtAmount = 100000000000 * (10**9);
 
    uint256 public  BNBRewardsFee;
    uint256 public  buyBackFee;
    uint256 public marketingFee;
    uint256 public  totalFees;
 
    uint256 public buyBackUpperLimit = 1 * 10**15;
    bool public buyBackEnabled = true;
    bool public swapEnabled = false;
 
    address payable _marketingWallet;
 
    // use by default 300,000 gas to process auto-claiming dividends
    uint256 public gasForProcessing = 300000;
 
    mapping (address => bool) private _isExcludedFromFees;
 
    // store addresses that a automatic market maker pairs. Any transfer *to* these addresses
    // could be subject to a maximum transfer amount
    mapping (address => bool) public automatedMarketMakerPairs;
 
    event UpdateDividendTracker(address indexed newAddress, address indexed oldAddress);
 
    event UpdateUniswapV2Router(address indexed newAddress, address indexed oldAddress);
 
    event ExcludeFromFees(address indexed account, bool isExcluded);
    event ExcludeMultipleAccountsFromFees(address[] accounts, bool isExcluded);
 
    event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
 
    event LiquidityWalletUpdated(address indexed newLiquidityWallet, address indexed oldLiquidityWallet);
 
    event GasForProcessingUpdated(uint256 indexed newValue, uint256 indexed oldValue);
 
    event SwapAndLiquify(
        uint256 tokensSwapped,
        uint256 ethReceived,
        uint256 tokensIntoLiqudity
    );
 
    event SwapETHForTokens(
        uint256 amountIn,
        address[] path
    );
 
    event SendDividends(
    	uint256 tokensSwapped,
    	uint256 amount
    );
 
    event ProcessedDividendTracker(
    	uint256 iterations,
    	uint256 claims,
        uint256 lastProcessedIndex,
    	bool indexed automatic,
    	uint256 gas,
    	address indexed processor
    );
 
     modifier lockTheSwap {
        swapping = true;
        _;
        swapping = false;
    }
 
    constructor() public ERC20("InfluenceHub", "INFLHUB") {
        uint256 _BNBRewardsFee = 3;
        uint256 _buyBackFee = 6;
        uint256 _marketingFee= 3;
 
        BNBRewardsFee = _BNBRewardsFee;
        buyBackFee = _buyBackFee;
        marketingFee = _marketingFee;
        totalFees = _BNBRewardsFee.add(_buyBackFee).add(_marketingFee);
 
        _marketingWallet = 0x0DA6b646f915E75Fd5b965E0ac20f61F78AeD566;
    	dividendTracker = new INFLHUBDividendTracker();
 
    	liquidityWallet = owner();
 
 
    	IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x10ED43C718714eb63d5aA57B78B54704E256024E);
         // Create a uniswap pair for this new token
        address _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
            .createPair(address(this), _uniswapV2Router.WETH());
 
        uniswapV2Router = _uniswapV2Router;
        uniswapV2Pair = _uniswapV2Pair;
 
        _setAutomatedMarketMakerPair(_uniswapV2Pair, true);
 
        // exclude from receiving dividends
        dividendTracker.excludeFromDividends(address(dividendTracker));
        dividendTracker.excludeFromDividends(address(this));
        dividendTracker.excludeFromDividends(owner());
        dividendTracker.excludeFromDividends(address(_uniswapV2Router));
 
        // exclude from paying fees or having max transaction amount
        excludeFromFees(liquidityWallet, true);
        excludeFromFees(address(this), true);
 
        /*
            _mint is an internal function in ERC20.sol that is only called here,
            and CANNOT be called ever again
        */
        _mint(owner(), 1000000000000000 * (10**9));
    }
 
    receive() external payable {
 
  	}
 
    function decimals() public view override returns (uint8) {
        return 9;
    }
 
    function updateDividendTracker(address newAddress) public onlyOwner {
        require(newAddress != address(dividendTracker), "INFLHUB: The dividend tracker already has that address");
 
        INFLHUBDividendTracker newDividendTracker = INFLHUBDividendTracker(payable(newAddress));
 
        require(newDividendTracker.owner() == address(this), "INFLHUB: The new dividend tracker must be owned by the INFLHUB token contract");
 
        newDividendTracker.excludeFromDividends(address(newDividendTracker));
        newDividendTracker.excludeFromDividends(address(this));
        newDividendTracker.excludeFromDividends(owner());
        newDividendTracker.excludeFromDividends(address(uniswapV2Router));
 
        emit UpdateDividendTracker(newAddress, address(dividendTracker));
 
        dividendTracker = newDividendTracker;
    }
 
    function updateUniswapV2Router(address newAddress) public onlyOwner {
        require(newAddress != address(uniswapV2Router), "INFLHUB: The router already has that address");
        emit UpdateUniswapV2Router(newAddress, address(uniswapV2Router));
        uniswapV2Router = IUniswapV2Router02(newAddress);
    }
 
    function excludeFromFees(address account, bool excluded) public onlyOwner {
        require(_isExcludedFromFees[account] != excluded, "INFLHUB: Account is already the value of 'excluded'");
        _isExcludedFromFees[account] = excluded;
 
        emit ExcludeFromFees(account, excluded);
    }
 
    function excludeMultipleAccountsFromFees(address[] calldata accounts, bool excluded) public onlyOwner {
        for(uint256 i = 0; i < accounts.length; i++) {
            _isExcludedFromFees[accounts[i]] = excluded;
        }
 
        emit ExcludeMultipleAccountsFromFees(accounts, excluded);
    }
 
 
    function setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner {
        require(pair != uniswapV2Pair, "INFLHUB: The PancakeSwap pair cannot be removed from automatedMarketMakerPairs");
 
        _setAutomatedMarketMakerPair(pair, value);
    }
 
    function _setAutomatedMarketMakerPair(address pair, bool value) private {
        require(automatedMarketMakerPairs[pair] != value, "INFLHUB: Automated market maker pair is already set to that value");
        automatedMarketMakerPairs[pair] = value;
 
        if(value) {
            dividendTracker.excludeFromDividends(pair);
        }
 
        emit SetAutomatedMarketMakerPair(pair, value);
    }
 
 
    function updateLiquidityWallet(address newLiquidityWallet) public onlyOwner {
        require(newLiquidityWallet != liquidityWallet, "INFLHUB: The liquidity wallet is already this address");
        excludeFromFees(newLiquidityWallet, true);
        emit LiquidityWalletUpdated(newLiquidityWallet, liquidityWallet);
        liquidityWallet = newLiquidityWallet;
    }
 
    function updateGasForProcessing(uint256 newValue) public onlyOwner {
        require(newValue >= 200000 && newValue <= 500000, "INFLHUB: gasForProcessing must be between 200,000 and 500,000");
        require(newValue != gasForProcessing, "INFLHUB: Cannot update gasForProcessing to same value");
        emit GasForProcessingUpdated(newValue, gasForProcessing);
        gasForProcessing = newValue;
    }
 
    function updateClaimWait(uint256 claimWait) external onlyOwner {
        dividendTracker.updateClaimWait(claimWait);
    }
 
    function getClaimWait() external view returns(uint256) {
        return dividendTracker.claimWait();
    }
 
    function getTotalDividendsDistributed() external view returns (uint256) {
        return dividendTracker.totalDividendsDistributed();
    }
 
    function isExcludedFromFees(address account) public view returns(bool) {
        return _isExcludedFromFees[account];
    }
 
    function withdrawableDividendOf(address account) public view returns(uint256) {
    	return dividendTracker.withdrawableDividendOf(account);
  	}
 
	function dividendTokenBalanceOf(address account) public view returns (uint256) {
		return dividendTracker.balanceOf(account);
	}
 
    function getAccountDividendsInfo(address account)
        external view returns (
            address,
            int256,
            int256,
            uint256,
            uint256,
            uint256,
            uint256,
            uint256) {
        return dividendTracker.getAccount(account);
    }
 
	function getAccountDividendsInfoAtIndex(uint256 index)
        external view returns (
            address,
            int256,
            int256,
            uint256,
            uint256,
            uint256,
            uint256,
            uint256) {
    	return dividendTracker.getAccountAtIndex(index);
    }
 
    function withdraw(uint256 weiAmount) external onlyOwner {
         require(address(this).balance >= weiAmount);
        msg.sender.transfer(weiAmount);    
    }
 
	function processDividendTracker(uint256 gas) external {
		(uint256 iterations, uint256 claims, uint256 lastProcessedIndex) = dividendTracker.process(gas);
		emit ProcessedDividendTracker(iterations, claims, lastProcessedIndex, false, gas, tx.origin);
    }
 
    function claim() external {
		dividendTracker.processAccount(msg.sender, false);
    }
 
    function getLastProcessedIndex() external view returns(uint256) {
    	return dividendTracker.getLastProcessedIndex();
    }
 
    function getNumberOfDividendTokenHolders() external view returns(uint256) {
        return dividendTracker.getNumberOfTokenHolders();
    }
 
    function setMaxSellTxAMount(uint256 amount) external onlyOwner{
        maxSellTransactionAmount = amount;
    }
 
    function setSwapTokensAmt(uint256 amt) external onlyOwner{
        swapTokensAtAmount = amt;
    }
 
    function setBNBRewardsFee(uint256 value) external onlyOwner{
        BNBRewardsFee = value;
    }
 
    function setMarketingFee(uint256 value) external onlyOwner{
        marketingFee = value;
    }
 
    function setMarketingWallet(address newWallet) external onlyOwner{
        _marketingWallet = payable(newWallet);
    }
    
    function addToBlackList(address[] calldata addresses) external onlyOwner {
      for (uint256 i; i < addresses.length; ++i) {
        _isBlacklisted[addresses[i]] = true;
      }
    }
    
     function removeFromBlackList(address account) external onlyOwner {
        _isBlacklisted[account] = false;
    }

 
    function setSwapEnabled(bool value) external onlyOwner{
        swapEnabled = value;
    }
 
    function setBuyBackFee(uint256 value) external onlyOwner{
        buyBackFee = value;
    }
 
    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal override {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(!_isBlacklisted[from] && !_isBlacklisted[to], "This address is blacklisted");
 
        if(amount == 0) {
            super._transfer(from, to, 0);
            return;
        }
 
        if( 
        	!swapping &&
            automatedMarketMakerPairs[to] && // sells only by detecting transfer to automated market maker pair
        	from != address(uniswapV2Router) && //router -> pair is removing liquidity which shouldn't have max
            !_isExcludedFromFees[to] //no max for those excluded from fees
        ) {
            require(amount <= maxSellTransactionAmount, "Sell transfer amount exceeds the maxSellTransactionAmount.");
        }
 
 
        uint256 contractTokenBalance = balanceOf(address(this));
        bool overMinimumTokenBalance = contractTokenBalance >= swapTokensAtAmount;
        if(swapEnabled && !swapping && to == uniswapV2Pair ) {
            uint256 balance = address(this).balance;
            if (buyBackEnabled && balance > uint256(1 * 10**15)) {
 
                if (balance > buyBackUpperLimit)
                    balance = buyBackUpperLimit;
 
                buyBackTokens(balance.div(100));
            }
 
 
 
           if (overMinimumTokenBalance) {
                contractTokenBalance = swapTokensAtAmount;
 
                uint256 swapTokens = contractTokenBalance.mul(marketingFee).div(totalFees);
                swapAndSendToMarketing(swapTokens);
 
                contractTokenBalance = balanceOf(address(this));
 
                uint256 buyBackTokens = contractTokenBalance.mul(buyBackFee).div(totalFees);
                swapBuyBackTokens(buyBackTokens);
 
                uint256 sellTokens = balanceOf(address(this));
                swapAndSendDividends(sellTokens);
           }
 
        }
 
 
        bool takeFee = true;
 
        // if any account belongs to _isExcludedFromFee account then remove the fee
        if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
            takeFee = false;
        }
 
        if(takeFee) {
        	uint256 fees = amount.mul(totalFees).div(100);
        	amount = amount.sub(fees);
 
            super._transfer(from, address(this), fees);
        }
 
        super._transfer(from, to, amount);
 
        try dividendTracker.setBalance(payable(from), balanceOf(from)) {} catch {}
        try dividendTracker.setBalance(payable(to), balanceOf(to)) {} catch {}
 
        if(!swapping) {
	    	uint256 gas = gasForProcessing;
 
	    	try dividendTracker.process(gas) returns (uint256 iterations, uint256 claims, uint256 lastProcessedIndex) {
	    		emit ProcessedDividendTracker(iterations, claims, lastProcessedIndex, true, gas, tx.origin);
	    	} 
	    	catch {
 
	    	}
        }
    }
 
     function swapAndSendToMarketing(uint256 tokens) private lockTheSwap {
 
        uint256 initialBalance = address(this).balance;
 
        swapTokensForEth(tokens);
        // how much ETH did we just swap into?
        uint256 newBalance = address(this).balance.sub(initialBalance);
         _marketingWallet.transfer(newBalance); 
    }
 
    function swapTokensForEth(uint256 tokenAmount) private {
 
 
        // generate the uniswap pair path of token -> weth
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = uniswapV2Router.WETH();
 
        _approve(address(this), address(uniswapV2Router), tokenAmount);
 
        // make the swap
        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0, // accept any amount of ETH
            path,
            address(this),
            block.timestamp
        );
 
    }
 
    function buyBackTokens(uint256 amount) private lockTheSwap{
    	if (amount > 0) {
    	    swapETHForTokens(amount);
	    }
    }
 
    function swapETHForTokens(uint256 amount) private {
        // generate the uniswap pair path of token -> weth
        address[] memory path = new address[](2);
        path[0] = uniswapV2Router.WETH();
        path[1] = address(this);
 
      // make the swap
        uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(
            0, // accept any amount of Tokens
            path,
            deadAddress, // Burn address
            block.timestamp.add(300)
        );
 
        emit SwapETHForTokens(amount, path);
    }
 
    function swapBuyBackTokens(uint256 tokens) private lockTheSwap{
        swapTokensForEth(tokens);
    }
 
    function setBuyBackEnabled(bool _enabled) public onlyOwner {
        buyBackEnabled = _enabled;
    }
 
    function setBuybackUpperLimit(uint256 buyBackLimit) external onlyOwner() {
        buyBackUpperLimit = buyBackLimit * 10**15;
    }
 
    function swapAndSendDividends(uint256 tokens) private lockTheSwap{
        uint256 initialBalance = address(this).balance;
        swapTokensForEth(tokens);
        uint256 dividends = address(this).balance.sub(initialBalance);
        (bool success,) = address(dividendTracker).call{value: dividends}("");
 
        if(success) {
   	 		emit SendDividends(tokens, dividends);
        }
    }
}
 
contract INFLHUBDividendTracker is DividendPayingToken, Ownable {
    using SafeMath for uint256;
    using SafeMathInt for int256;
    using IterableMapping for IterableMapping.Map;
 
    IterableMapping.Map private tokenHoldersMap;
    uint256 public lastProcessedIndex;
 
    mapping (address => bool) public excludedFromDividends;
 
    mapping (address => uint256) public lastClaimTimes;
 
    uint256 public claimWait;
    uint256 public immutable minimumTokenBalanceForDividends;
 
    event ExcludeFromDividends(address indexed account);
    event ClaimWaitUpdated(uint256 indexed newValue, uint256 indexed oldValue);
 
    event Claim(address indexed account, uint256 amount, bool indexed automatic);
 
    constructor() public DividendPayingToken("INFLHUB_Dividend_Tracker", "INFLHUB_Dividend_Tracker") {
    	claimWait = 3600;
        minimumTokenBalanceForDividends = 100000000000 * (10**9); //must hold 100000000000+ tokens
    }
 
    function _transfer(address, address, uint256) internal override {
        require(false, "INFLHUB_Dividend_Tracker: No transfers allowed");
    }
 
    function withdrawDividend() public override {
        require(false, "INFLHUB_Dividend_Tracker: withdrawDividend disabled. Use the 'claim' function on the main INFLHUB contract.");
    }
 
    function excludeFromDividends(address account) external onlyOwner {
    	require(!excludedFromDividends[account]);
    	excludedFromDividends[account] = true;
 
    	_setBalance(account, 0);
    	tokenHoldersMap.remove(account);
 
    	emit ExcludeFromDividends(account);
    }
 
    function updateClaimWait(uint256 newClaimWait) external onlyOwner {
        require(newClaimWait >= 3600 && newClaimWait <= 86400, "INFLHUB_Dividend_Tracker: claimWait must be updated to between 1 and 24 hours");
        require(newClaimWait != claimWait, "INFLHUB_Dividend_Tracker: Cannot update claimWait to same value");
        emit ClaimWaitUpdated(newClaimWait, claimWait);
        claimWait = newClaimWait;
    }
 
    function getLastProcessedIndex() external view returns(uint256) {
    	return lastProcessedIndex;
    }
 
    function getNumberOfTokenHolders() external view returns(uint256) {
        return tokenHoldersMap.keys.length;
    }
 
 
 
    function getAccount(address _account)
        public view returns (
            address account,
            int256 index,
            int256 iterationsUntilProcessed,
            uint256 withdrawableDividends,
            uint256 totalDividends,
            uint256 lastClaimTime,
            uint256 nextClaimTime,
            uint256 secondsUntilAutoClaimAvailable) {
        account = _account;
 
        index = tokenHoldersMap.getIndexOfKey(account);
 
        iterationsUntilProcessed = -1;
 
        if(index >= 0) {
            if(uint256(index) > lastProcessedIndex) {
                iterationsUntilProcessed = index.sub(int256(lastProcessedIndex));
            }
            else {
                uint256 processesUntilEndOfArray = tokenHoldersMap.keys.length > lastProcessedIndex ?
                                                        tokenHoldersMap.keys.length.sub(lastProcessedIndex) :
                                                        0;
 
 
                iterationsUntilProcessed = index.add(int256(processesUntilEndOfArray));
            }
        }
 
 
        withdrawableDividends = withdrawableDividendOf(account);
        totalDividends = accumulativeDividendOf(account);
 
        lastClaimTime = lastClaimTimes[account];
 
        nextClaimTime = lastClaimTime > 0 ?
                                    lastClaimTime.add(claimWait) :
                                    0;
 
        secondsUntilAutoClaimAvailable = nextClaimTime > block.timestamp ?
                                                    nextClaimTime.sub(block.timestamp) :
                                                    0;
    }
 
    function getAccountAtIndex(uint256 index)
        public view returns (
            address,
            int256,
            int256,
            uint256,
            uint256,
            uint256,
            uint256,
            uint256) {
    	if(index >= tokenHoldersMap.size()) {
            return (0x0000000000000000000000000000000000000000, -1, -1, 0, 0, 0, 0, 0);
        }
 
        address account = tokenHoldersMap.getKeyAtIndex(index);
 
        return getAccount(account);
    }
 
    function canAutoClaim(uint256 lastClaimTime) private view returns (bool) {
    	if(lastClaimTime > block.timestamp)  {
    		return false;
    	}
 
    	return block.timestamp.sub(lastClaimTime) >= claimWait;
    }
 
    function setBalance(address payable account, uint256 newBalance) external onlyOwner {
    	if(excludedFromDividends[account]) {
    		return;
    	}
 
    	if(newBalance >= minimumTokenBalanceForDividends) {
            _setBalance(account, newBalance);
    		tokenHoldersMap.set(account, newBalance);
    	}
    	else {
            _setBalance(account, 0);
    		tokenHoldersMap.remove(account);
    	}
 
    	processAccount(account, true);
    }
 
    function process(uint256 gas) public returns (uint256, uint256, uint256) {
    	uint256 numberOfTokenHolders = tokenHoldersMap.keys.length;
 
    	if(numberOfTokenHolders == 0) {
    		return (0, 0, lastProcessedIndex);
    	}
 
    	uint256 _lastProcessedIndex = lastProcessedIndex;
 
    	uint256 gasUsed = 0;
 
    	uint256 gasLeft = gasleft();
 
    	uint256 iterations = 0;
    	uint256 claims = 0;
 
    	while(gasUsed < gas && iterations < numberOfTokenHolders) {
    		_lastProcessedIndex++;
 
    		if(_lastProcessedIndex >= tokenHoldersMap.keys.length) {
    			_lastProcessedIndex = 0;
    		}
 
    		address account = tokenHoldersMap.keys[_lastProcessedIndex];
 
    		if(canAutoClaim(lastClaimTimes[account])) {
    			if(processAccount(payable(account), true)) {
    				claims++;
    			}
    		}
 
    		iterations++;
 
    		uint256 newGasLeft = gasleft();
 
    		if(gasLeft > newGasLeft) {
    			gasUsed = gasUsed.add(gasLeft.sub(newGasLeft));
    		}
 
    		gasLeft = newGasLeft;
    	}
 
    	lastProcessedIndex = _lastProcessedIndex;
 
    	return (iterations, claims, lastProcessedIndex);
    }
 
    function processAccount(address payable account, bool automatic) public onlyOwner returns (bool) {
        uint256 amount = _withdrawDividendOfUser(account);
 
    	if(amount > 0) {
    		lastClaimTimes[account] = block.timestamp;
            emit Claim(account, amount, automatic);
    		return true;
    	}
 
    	return false;
    }
}