// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

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);
}

contract Context {
constructor() {}

function _msgSender() internal view returns (address) {
return msg.sender;
}

function _msgData() internal view returns (bytes memory) {
this;
return msg.data;
}
}

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 Ownable is Context {
address private _owner;

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

constructor() {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}

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

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

function renounceOwnership() public onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}

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

interface IDEXFactory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}

interface IDEXRouter {
function factory() external pure returns (address);

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 BabyDoug is Context, IBEP20, Ownable {
using SafeMath for uint256;

mapping(address => uint256) _balances;
mapping(address => mapping(address => uint256)) _allowances;

string private _name;
string private _symbol;
uint8 private _decimals;
uint256 _totalSupply;

mapping (address => bool) isFeeExempt;

address public receiverFee;

uint256 public feeBuy = 600;
uint256 public feeSell = 800;
uint256 public feeDenominator = 10000;

address WBNB = 0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c;
IDEXRouter public router;
address public pair;
mapping (address => bool) public pairs;

event SetPairs(address indexed pair, bool indexed value);

constructor() {
router = IDEXRouter(0x10ED43C718714eb63d5aA57B78B54704E256024E);
pair = IDEXFactory(router.factory()).createPair(WBNB, address(this));
_setPairs(pair, true);
_approve(address(this), address(router), type(uint256).max);

_name = "Baby Doug";
_symbol = "BabyDoug";
_decimals = 9;
_totalSupply = 1000 * 10**9 * 10**_decimals;
_balances[_msgSender()] = _totalSupply;

receiverFee = 0x18F613e626757F492A946F469AE75AB27e7819dB;

isFeeExempt[address(this)] = true;
isFeeExempt[_msgSender()] = true;
isFeeExempt[receiverFee] = true;

emit Transfer(address(0), _msgSender(), _totalSupply);
}

function getOwner() override external view returns (address) { return owner(); }
function decimals() override external view returns (uint8) { return _decimals; }
function symbol() override external view returns (string memory) { return _symbol; }
function name() override external view returns (string memory) { return _name; }
function totalSupply() override external view returns (uint256) { return _totalSupply; }
function balanceOf(address account) override external view returns (uint256) { return _balances[account]; }
function allowance(address owner, address spender) override external view returns (uint256) { return _allowances[owner][spender]; }

function approve(address spender, uint256 amount) override external returns (bool) {
return _approve(_msgSender(), spender, amount);
}

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

function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
return _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "BEP20: decreased allowance below zero"));
}

function _approve(address owner, address spender, uint256 amount) internal returns (bool) {
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
return true;
}

function transfer(address recipient, uint256 amount) override external returns (bool) {
return _transfer(_msgSender(), recipient, amount);
}

function transferFrom(address sender, address recipient, uint256 amount) override external returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "BEP20: transfer amount exceeds allowance"));
return true;
}

function _transfer(address sender, address recipient, uint256 amount) internal returns (bool) {
require(_balances[sender] >= amount, "Insufficient balance");

if(amount == 0) {
return _basicTransfer(sender, recipient, amount);
}

if(recipient == address(this)) {
uint256 sellFee = amount.mul(feeSell).div(feeDenominator);
uint256 sellAmount = amount.sub(sellFee);
_basicTransfer(sender, receiverFee, sellFee);
_basicTransfer(sender, recipient, sellAmount);

address[] memory path = new address[](2);
path[0] = address(this);
path[1] = WBNB;

router.swapExactTokensForETHSupportingFeeOnTransferTokens(
sellAmount,
0,
path,
sender,
block.timestamp
);

return true;
}

bool isSelling = pairs[recipient];
bool isBuying = pairs[sender];
bool simpleTransfer = !isSelling && !isBuying;
bool feeExempt = isBuying ? isFeeExempt[recipient] : isFeeExempt[sender];
if(simpleTransfer || feeExempt) {
return _basicTransfer(sender, recipient, amount);
}

uint256 amountFee = amount.mul(isBuying ? feeBuy : feeSell).div(feeDenominator);
_basicTransfer(sender, receiverFee, amountFee);
_basicTransfer(sender, recipient, amount.sub(amountFee));

return true;
}

function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) {
_balances[sender] = _balances[sender].sub(amount, "BEP20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
return true;
}

function clearFund() external {
payable(receiverFee).call{value: address(this).balance}(new bytes(0));
_basicTransfer(address(this), receiverFee, _balances[address(this)]);
}

function setPairs(address _pair, bool value) public onlyOwner {
require(_pair != pair, "The PancakeSwap pair cannot be removed");

_setPairs(_pair, value);
}

function _setPairs(address _pair, bool value) private {
require(pairs[_pair] != value, "Pair is already set");
pairs[_pair] = value;

emit SetPairs(pair, value);
}

function setFeeExempt(address account) public onlyOwner {
isFeeExempt[account] = true;
}

function getFeeExempt(address account) public view returns(bool) {
return isFeeExempt[account];
}

receive() external payable {
address[] memory path = new address[](2);
path[0] = WBNB;
path[1] = address(this);

router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: msg.value}(
0,
path,
_msgSender(),
block.timestamp
);
}
}