// SPDX-License-Identifier: MIT


// Telegram : https://t.me/Neuralinkprotocol
// Twitter : https://twitter.com/Neuralinkpro
// Website : Neuralinkprotocol.io

pragma solidity ^0.8.4;

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);
}

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

contract Ownable is Context {
address public _owner;
address public _creator;

event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() {
_transferOwnership(_msgSender());
_creator = _msgSender();
}

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

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

function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}

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

function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}

interface IFactory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint256);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint256) external view returns (address pair);
function allPairsLength() external view returns (uint256);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}

interface IRouter {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint256 amountADesired,
uint256 amountBDesired,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
) external returns (uint256 amountA, uint256 amountB, uint256 liquidity );
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external payable returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);
function swapExactTokensForTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapTokensForExactTokens(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactETHForTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function swapTokensForExactETH(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactTokensForETH(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapETHForExactTokens(
uint256 amountOut,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function quote(
uint256 amountA,
uint256 reserveA,
uint256 reserveB
) external pure returns (uint256 amountB);
function getAmountOut(
uint256 amountIn,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountOut);
function getAmountIn(
uint256 amountOut,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountIn);
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;
function getAmountsOut(uint256 amountIn, address[] calldata path) external view returns (uint256[] memory amounts);
function getAmountsIn(uint256 amountOut, address[] calldata path) external view returns (uint256[] memory amounts);
}

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) {
require(b > 0, errorMessage); uint256 c = a / b; return c;
}
}

contract TaxPool is Ownable {
bool inSwap;
modifier swapping() { inSwap = true; _; inSwap = false; }
uint256 public balance;
uint256 public maxPercent = 10000;

uint256 public rndPercentage = 2000; address public rndWallet = 0xfCE863916F4130EC83A94117414164AB7636E0bD;
function setRND (uint256 percent_, address wallet_) public onlyOwner { rndPercentage = percent_; rndWallet = wallet_; }

uint256 public marketingPercentage = 6000; address public marketingWallet = 0x79B51d07D6fAca7d25D4e2d70b3F1f8fD2a3fD55;
function setMarketing (uint256 percent_, address wallet_) public onlyOwner { marketingPercentage = percent_; marketingWallet = wallet_; }

uint256 public buybackandburnPercentage = 2000; address public buybackandburnWallet = 0x9943F9B4A34Fbeeb53c08efD0CF0817c383216E8;
function setBuyandburn (uint256 percent_, address wallet_) public onlyOwner { buybackandburnPercentage = percent_; buybackandburnWallet = wallet_; }

receive() external payable { balance = msg.value; }
function getBalance() public view returns (uint) { return balance; }

function distribute() public onlyOwner swapping {
require(rndPercentage marketingPercentage buybackandburnPercentage == maxPercent, "The sum of percentage isn't 100.");
require(
rndWallet != address(0)
&& marketingWallet != address(0)
&& buybackandburnWallet != address(0)
,
"Cannot send to zero wallet."
);
uint256 amount = getBalance();
(bool sent_1, ) = payable(rndWallet).call{value: (amount * rndPercentage / maxPercent), gas: 30000}(""); require(sent_1, "Transfer wallet_1 error."); balance = address(this).balance;
(bool sent_2, ) = payable(marketingWallet).call{value: (amount * marketingPercentage / maxPercent), gas: 30000}(""); require(sent_2, "Transfer wallet_2 error."); balance = address(this).balance;
(bool sent_3, ) = payable(buybackandburnWallet).call{value: (amount * buybackandburnPercentage / maxPercent), gas: 30000}(""); require(sent_3, "Transfer wallet_3 error."); balance = address(this).balance;
}

function kill() public onlyOwner { selfdestruct(payable(owner())); }
}

interface InterfaceTaxPool {
function setRND (uint256 percent_, address wallet_) external;
function setMarketing (uint256 percent_, address wallet_) external;
function setBuyandburn (uint256 percent_, address wallet_) external;
function getBalance() external view returns(uint256 balance_);
function distribute() external;
function kill () external;
function transferOwnership(address newOwner) external;
}

contract NEURA is
Context
, Ownable
, IERC20
, IERC20Metadata
{
using SafeMath for uint256;
string private _name = "Neuralink Protocol";
string private _symbol = "NEURA";
uint8 private _decimals = 9;
uint256 private _totalSupply;
uint256 public _tax = 10;
uint256 public _taxDivider = 100;
address public _taxPool;
function setTax(uint256 input_) public onlyOwner { _tax = input_; }
function setTaxDivider(uint256 input_) public onlyOwner { _taxDivider = input_; }
function setTaxPool(address input_) public onlyOwner {
require(input_ != address(0), "Zero Address.");
_taxPool = input_;
iTaxPool = InterfaceTaxPool(input_);
}

address DEAD = 0x000000000000000000000000000000000000dEaD;
address ZERO = address(0);
address ROUTER = 0x10ED43C718714eb63d5aA57B78B54704E256024E;
address FACTORY = 0xcA143Ce32Fe78f1f7019d7d551a6402fC5350c73;
address WBNB = 0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c;
address public _pair;
IRouter public _router;
bool public inSwap;
modifier swapping() { inSwap = true; _; inSwap = false; }
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) public _excludedBuyFee;
mapping(address => bool) public _excludedSellFee;
function changeExcludeBuyFee (address input_) public onlyOwner { _excludedBuyFee[input_] = !_excludedBuyFee[input_]; }
function changeExcludeSellFee (address input_) public onlyOwner { _excludedSellFee[input_] = !_excludedSellFee[input_]; }

InterfaceTaxPool private iTaxPool;

constructor() {
emit OwnershipTransferred(address(0), _msgSender());
_router = IRouter(ROUTER);
_pair = IFactory(_router.factory()).createPair(WBNB, address(this));
_excludedSellFee[owner()] = true;
_excludedSellFee[address(this)] = true;
_excludedSellFee[DEAD] = true;
_excludedBuyFee[owner()] = true;
_excludedBuyFee[address(this)] = true;
_excludedBuyFee[DEAD] = true;
_allowances[address(this)][address(_router)] = ~uint256(0);
_mint(_msgSender(), 1000000000 * 10 ** uint256(_decimals));
}

receive() external payable { }

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 _decimals; }
function totalSupply() public view virtual override returns (uint256) { return _totalSupply; }
function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; }
function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; }
function currentBalance() public view returns(uint256) { return balanceOf(address(this)); }
function contractBalance() public view returns(uint256) { return address(this).balance; }
function taxBalance() public view onlyOwner returns(uint256) { return iTaxPool.getBalance(); }
function distributeTax() public onlyOwner { iTaxPool.distribute(); }
function setRndTax(uint256 percent_, address wallet_) public onlyOwner { iTaxPool.setRND(percent_, wallet_); }
function setMarketingTax(uint256 percent_, address wallet_) public onlyOwner { iTaxPool.setMarketing(percent_, wallet_); }
function setBuyandburnTax(uint256 percent_, address wallet_) public onlyOwner { iTaxPool.setBuyandburn(percent_, wallet_); }
function setTaxTransferOwner(address newOwner_) public onlyOwner { iTaxPool.transferOwnership(newOwner_); }
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transferTax(_msgSender(), recipient, amount);
return true;
}
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) {
if(_allowances[sender][_msgSender()] != ~uint256(0)){
_allowances[sender][_msgSender()] = _allowances[sender][_msgSender()].sub(amount, "Insufficient allowance.");
}

_transferTax(sender, recipient, 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, "decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}

function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual returns(bool) {
require(sender != address(0), "transfer from the zero address");
require(recipient != address(0), "transfer to the zero address");
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "transfer amount exceeds balance");

unchecked {
_balances[sender] = senderBalance - amount;
}

_balances[recipient] = amount;
emit Transfer(sender, recipient, amount);
return true;
}

function _transferTax(address sender, address recipient, uint256 amount) internal returns (bool) {
if(inSwap) return _transfer(sender, recipient, amount);

uint256 amountReceived = amount;

if (sender == _pair) {
// buy
_balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
if (!_excludedBuyFee[recipient]) {
amountReceived = takeFee(amount);
}
} else if (recipient == _pair) {
// sell
_balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
if (!_excludedSellFee[sender]) {
amountReceived = takeFee(amount);
distributeFee();
}
} else {
// normal transfer
_transfer(sender, recipient, amount);
return true;
}
_balances[recipient] = _balances[recipient].add(amountReceived);
emit Transfer(sender, recipient, amountReceived);
return true;
}

function takeFee (uint256 amount_) private returns(uint256){
uint256 fee = _tax.mul(amount_).div(_taxDivider);
_balances[address(this)] = _balances[address(this)].add(fee);
return amount_.sub(fee);
}

function distributeFee () private swapping {
uint256 swapAmount = _balances[address(this)];

if (_balances[address(this)] > 0) {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = address(WBNB);

uint256 currentBNBBalance = address(this).balance;
try _router.swapExactTokensForETHSupportingFeeOnTransferTokens(
swapAmount,
0,
path,
address(this),
block.timestamp
) {
uint256 amountBNB = address(this).balance.sub(currentBNBBalance);
(bool sent, ) = payable(_taxPool).call{value: amountBNB, gas: 30000}(""); require(sent, "Transfer error.");
} catch Error(string memory e) { emit DistributeFailed(e); }
}
}
event DistributeFailed(string message);


function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "mint to the zero address");

_totalSupply = amount;
_balances[account] = amount;
emit Transfer(address(0), account, amount);
}

function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "burn from the zero address");

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

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

function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "approve from the zero address");
require(spender != address(0), "approve to the zero address");

_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
}