/**

Conceptually speaking, what really causes growth, appreciation and gain is the work of the collective and not of the individual. We believe in true decentralization.
We can call it hive mind, or collective intelligence. The concept is easy, togheter we are strong.
So this is a call for arms, Unite as a community, fight the market, and we all shall prevail.
Thus we are ONE.

*/
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.5;


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;
    }
}

interface IBEP20 {
    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);
}




abstract contract Auth {
    address internal owner;
    mapping (address => bool) internal authorizations;




    constructor(address _owner) {
        owner = _owner;
        authorizations[_owner] = true;
    }




    
    modifier onlyOwner() {
        require(isOwner(msg.sender), "!OWNER"); _;
    }




    
    modifier authorized() {
        require(isAuthorized(msg.sender), "!AUTHORIZED"); _;
    }




    
    function authorize(address adr) public onlyOwner {
        authorizations[adr] = true;
    }




    /**
     * Remove address' authorization. Owner only
     */
    function unauthorize(address adr) public onlyOwner {
        authorizations[adr] = false;
    }




    /**
     * Check if address is owner
     */
    function isOwner(address account) public view returns (bool) {
        return account == owner;
    }




    /**
     * Return address' authorization status
     */
    function isAuthorized(address adr) public view returns (bool) {
        return authorizations[adr];
    }




    /**
     * Transfer ownership to new address. Caller must be owner. Leaves old owner authorized
     */
    function transferOwnership(address payable adr) public onlyOwner {
        owner = adr;
        authorizations[adr] = true;
        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;
}




contract ONE is IBEP20, Auth {
    using SafeMath for uint256;

    address WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    address DEAD = 0x000000000000000000000000000000000000dEaD;
    address ZERO = 0x0000000000000000000000000000000000000000;

    string constant _name = "Collective Intelligence";
    string constant _symbol = "ONE";
    uint8 constant _decimals = 18;

    uint256 _totalSupply = 9999999 * (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;

    uint256 liquidityFee = 0;
    uint256 BBFee = 1;
    uint256 totalFee = 1;
    uint256 feeDenominator = 100;
    
    address private marketingReceiver = 0x7daf8CDe768e997E6337734F55FDDfF33823351f;

    IDEXRouter public router;
    address public pair;
    uint256 public launchedAt;

    bool public swapEnabled = true;
    uint256 public swapThreshold = _totalSupply / 1000000 * 1; // 0.3%
    bool inSwap;
    modifier swapping() { inSwap = true; _; inSwap = false; }

    constructor () Auth(msg.sender) {
        router = IDEXRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        pair = IDEXFactory(router.factory()).createPair(WETH, address(this));
        _allowances[address(this)][address(router)] = type(uint256).max;




        address _owner = owner;
        isFeeExempt[_owner] = true;
        isTxLimitExempt[_owner] = 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); }
        
        checkTxLimit(sender, amount);
        
        if (recipient != pair && recipient != DEAD) {
            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, amount) : amount;
        _balances[recipient] = _balances[recipient].add(amountReceived);




        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 checkTxLimit(address sender, uint256 amount) internal view {
        require(amount <= _maxTxAmount || isTxLimitExempt[sender], "TX Limit Exceeded");
    }
    
    function shouldTakeFee(address sender) internal view returns (bool) {
        return !isFeeExempt[sender];
    }








    function takeFee(address sender, uint256 amount) internal returns (uint256) {
        uint256 feeAmount = amount.mul(totalFee).div(feeDenominator);




        _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 contractTokenBalance = balanceOf(address(this));
        uint256 amountToLiquify = contractTokenBalance.mul(liquidityFee).div(totalFee).div(2);
        uint256 amountToSwap = contractTokenBalance.sub(amountToLiquify);




        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = WETH;




        uint256 balanceBefore = address(this).balance;




        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            amountToSwap,
            0,
            path,
            address(this),
            block.timestamp
        );
        uint256 amountETH = address(this).balance.sub(balanceBefore);
        uint256 totalETHFee = totalFee.sub(liquidityFee.div(2));
        uint256 amountETHLiquidity = amountETH.mul(liquidityFee).div(totalETHFee).div(2);
        uint256 amountETHMarket = amountETH.mul(BBFee).div(totalETHFee);




        (bool OPSuccess, /* bytes memory data */) = payable(marketingReceiver).call{value: amountETHMarket, gas: 30000}("");
        require(OPSuccess, "receiver rejected ETH transfer");
        addLiquidity(amountToLiquify, amountETHLiquidity);
    }




    function addLiquidity(uint256 tokenAmount, uint256 ETHAmount) private {
    if(tokenAmount > 0){
            router.addLiquidityETH{value: ETHAmount}(
                address(this),
                tokenAmount,
                0,
                0,
                address(this),
                block.timestamp
            );
            emit AutoLiquify(ETHAmount, tokenAmount);
        }
    }




    function buyTokens(uint256 amount, address to) internal swapping {
        address[] memory path = new address[](2);
        path[0] = WETH;
        path[1] = address(this);




        router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(
            0,
            path,
            to,
            block.timestamp
        );
    }




    function launched() internal view returns (bool) {
        return launchedAt != 0;
    }




    function launch() internal {
        launchedAt = block.number;
    }




    function setTxLimit(uint256 amount) external authorized {
        require(amount >= _totalSupply / 1000);
        _maxTxAmount = amount;
    }




   function setMaxWallet(uint256 amount) external onlyOwner() {
        require(amount >= _totalSupply / 1000 );
        _maxWalletSize = amount;
    }    




    function setIsFeeExempt(address holder, bool exempt) external authorized {
        isFeeExempt[holder] = exempt;
    }




    function setIsTxLimitExempt(address holder, bool exempt) external authorized {
        isTxLimitExempt[holder] = exempt;
    }




    function setFees(uint256 _liquidityFee, uint256 _BBFee, uint256 _feeDenominator) external authorized {
        liquidityFee = _liquidityFee;
        BBFee = _BBFee;
        totalFee = _liquidityFee.add(_BBFee);
        feeDenominator = _feeDenominator;
    }




    function setFeeReceiver(address _marketingReceiver) external authorized {
        marketingReceiver = _marketingReceiver;
    }




    function setSwapBackSettings(bool _enabled, uint256 _amount) external authorized {
        swapEnabled = _enabled;
        swapThreshold = _amount;
    }



    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;
    }
    
    event AutoLiquify(uint256 amountETH, uint256 amountBOG);
}