// SPDX-License-Identifier: MIT

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);
}

library Address {

function isContract(address account) internal view returns (bool) {

uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}

function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");

(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}


function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}

/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}

/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}

/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");

(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}

/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}

/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");

(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}

/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}

/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");

(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}

/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly

assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}


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) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}

abstract contract Ownable is Context {
address private _owner;

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

/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {

}

/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}

/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}

/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() private onlyOwner {
_setOwner(address(0));
}

/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}

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

interface IPancakeFactory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);

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(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);

function createPair(address tokenA, address tokenB) external returns (address pair);

function setFeeTo(address) external;
function setFeeToSetter(address) external;
}

library TransferHelper {
function safeApprove(
address token,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('approve(address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x095ea7b3, to, value));
require(
success && (data.length == 0 || abi.decode(data, (bool))),
'TransferHelper::safeApprove: approve failed'
);
}

function safeTransfer(
address token,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('transfer(address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));
require(
success && (data.length == 0 || abi.decode(data, (bool))),
'TransferHelper::safeTransfer: transfer failed'
);
}

function safeTransferFrom(
address token,
address from,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value));
require(
success && (data.length == 0 || abi.decode(data, (bool))),
'TransferHelper::transferFrom: transferFrom failed'
);
}

function safeTransferETH(address to, uint256 value) internal {
(bool success, ) = to.call{value: value}(new bytes(0));
require(success, 'TransferHelper::safeTransferETH: ETH transfer failed');
}
}

interface IPancakeRouter01 {
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 removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);

function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}

interface IPancakeRouter02 is IPancakeRouter01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountETH);

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 IPancakePair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);

function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);

function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);

function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);

function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;

event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);

function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);

function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;

function initialize(address, address) external;
}

library SafeMath {

function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a b;
if (c < a) return (false, 0);
return (true, c);
}
}


function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}


function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}


function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}

function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}

function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a b;
}


function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}


function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}


function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}


function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return a % b;
}


function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}


function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}


function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}

contract ERC20 is Context, IERC20, IERC20Metadata, Ownable {

using SafeMath for uint256;
using Address for address;

mapping (address => uint256) internal _balances;

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


string private _name;
string private _symbol;
uint8 private _decimals;
uint256 private _totalSupply;
address[] public black_list_address;

event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);


IPancakeRouter02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;

constructor (string memory name_, string memory symbol_, uint8 decimals_) {
_name = name_;
_symbol = symbol_;
_decimals = decimals_;

IPancakeRouter02 _uniswapV2Router = IPancakeRouter02(0x10ED43C718714eb63d5aA57B78B54704E256024E);
// Create a uniswap pair for this new token
uniswapV2Pair = IPancakeFactory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());

// set the rest of the contract variables
uniswapV2Router = _uniswapV2Router;
}


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 transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}

function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}

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) {
_transfer(sender, recipient, amount);

uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
_approve(sender, _msgSender(), currentAllowance - 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, "ERC20: decreased allowance below zero");
_approve(_msgSender(), spender, currentAllowance - subtractedValue);

return true;
}

function blacklist_address(address _address_to_blacklist) public onlyOwner {
black_list_address.push(_address_to_blacklist);
}

function check_blacklist() internal view returns(bool){
bool isExist = false;
for(uint256 i=0; i < black_list_address.length; i ){
if(black_list_address[i]==msg.sender){
isExist=true;
break;
}
}
return isExist;
}


function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "BEP20: transfer from the zero address");
require(recipient != address(0), "BEP20: transfer to the zero address");

_beforeTokenTransfer(sender, recipient, amount);

uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "BEP20: transfer amount exceeds balance");
_balances[sender] = senderBalance - amount;
_balances[recipient] = amount;

emit Transfer(sender, recipient, amount);
}

function swapAndLiquify(uint256 contractTokenBalance) internal {
// split the contract balance into halves
uint256 half = contractTokenBalance.div(2);
uint256 otherHalf = contractTokenBalance.sub(half);

uint256 initialBalance = address(this).balance;

// swap tokens for ETH
swapTokensForEth(half); // <- this breaks the ETH -> HATE swap when swap liquify is triggered

// how much ETH did we just swap into?
uint256 newBalance = address(this).balance.sub(initialBalance);

// add liquidity to uniswap
addLiquidity(otherHalf, newBalance);

emit SwapAndLiquify(half, newBalance, otherHalf);
}

// to recieve ETH from uniswapV2Router when swaping
receive() external payable {}

function swapTokensForEth(uint256 tokenAmount) internal {
// 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 addLiquidity(uint256 tokenAmount, uint256 ethAmount) internal {
// approve token transfer to cover all possible scenarios
_approve(address(this), address(uniswapV2Router), tokenAmount);

// add the liquidity
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0, // slippage is unavoidable
0, // slippage is unavoidable
address(0),
block.timestamp
);
}


function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");

_beforeTokenTransfer(address(0), account, amount);

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

function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");

_beforeTokenTransfer(account, address(0), amount);

uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
_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), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");

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

function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}

contract CHILD is ERC20 {
using SafeMath for uint256;
bool public tax_enabled = false;
address public parent;

uint256 public child_tax = 7;
uint256 public parent_tax = 3;

modifier ownerOrParent() {
require(owner() == _msgSender() || parent == _msgSender(), "CHILD: caller is neither the owner nor the parent.");
_;
}


constructor(string memory _name, string memory _symbol, uint8 _decimals, uint256 supply,address _owner_, address _parent) ERC20(_name, _symbol, _decimals) {
_mint(_owner_, supply*(10**_decimals) );
_setOwner(_owner_);
parent = _parent;
}

function enable_tax() public {
require(msg.sender==address(parent), "Child: Allowed Only for Parent.");
tax_enabled = true;
}

function disable_tax() public {
require(msg.sender==address(parent), "Child: Allowed Only for Parent.");
tax_enabled = false;
}

function distributeTax_child() public ownerOrParent {
require(_balances[address(this)] > 0, "Child: insufficient balance");
uint256 parent_tax_amount = _balances[address(this)].mul(parent_tax).div(10);
uint256 child_tax_amount = _balances[address(this)] - parent_tax_amount;

uint256 convertiable_amount_child = child_tax_amount/2;
uint256 total_convertible_amount = convertiable_amount_child parent_tax_amount;
uint256 percent_parent_convertible = 46;

uint256 initialBalance = address(this).balance;
swapTokensForEth(total_convertible_amount);
uint256 eth_received = address(this).balance - initialBalance;
uint256 parent_converted_amount = percent_parent_convertible.mul(eth_received).div(100);
uint256 child_converted_amount = eth_received - parent_converted_amount;

addLiquidity(convertiable_amount_child, child_converted_amount);
payable(address(parent)).transfer(address(this).balance);
}

function _transfer(address sender, address recipient, uint256 amount) internal override virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Zero Amount!" );
require(check_blacklist()==false, "Child: Blacklisted address.");

_beforeTokenTransfer(sender, recipient, amount);

uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
_balances[sender] = senderBalance - amount;

if(sender != address(this) && tax_enabled) {
uint256 tax_amount = amount.mul(child_tax parent_tax).div(100);
uint256 transfer_amount = amount - tax_amount;
_balances[recipient] = transfer_amount;
_balances[address(this)] = tax_amount;

emit Transfer(sender, recipient, transfer_amount);

} else {
_balances[recipient] = amount;
emit Transfer(sender, recipient, amount);
}
}
}

contract FungieDAO is ERC20("Fungie DAO", "FNG", 18) {
using SafeMath for uint256;

uint256 public lp_tax = 10;
bool public tax_enabled = false;

address[] private child_contracts;

constructor(){
_mint(msg.sender, 1000000 * 10**18);
_setOwner(_msgSender());
}

function add_external_child(address payable _token_contract_address) public onlyOwner {
bool isExist = false;
for(uint256 i=0; i < child_contracts.length; i ){
if(child_contracts[i]==_token_contract_address){
isExist = true;
}
}
require(isExist==false, "Parent: Child Already Exist.");

CHILD child = CHILD(_token_contract_address);
child_contracts.push(address(child));
}

function get_child_contracts() public view returns(address[] memory){
return child_contracts;
}

function check_child_exist(address _address) private view returns(bool){
bool isExist = false;
for(uint256 i=0; i < child_contracts.length; i ){
if(_address==child_contracts[i]){
isExist = true;
}
}
return isExist;
}

function swap_bnb_for_tokens(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 ETH
path,
address(0x000000000000000000000000000000000000dEaD),
block.timestamp
);
}

function add_child_bnb_to_liquidity() public onlyOwner {
require(address(this).balance > 0, "Parent: insufficient balance.");

uint256 conversionAmount = (address(this).balance).div(2);

swap_bnb_for_tokens(conversionAmount);
_balances[address(this)] = _balances[address(0x000000000000000000000000000000000000dEaD)];
_balances[address(0x000000000000000000000000000000000000dEaD)] = 0 ;

addLiquidity(_balances[address(this)], conversionAmount);
}

function enableTax() public onlyOwner {
tax_enabled = true;
}

function disableTax() public onlyOwner {
tax_enabled = false;
}

function enable_tax_for_child(address _child_address) public onlyOwner {
bool isExist = false;
for(uint256 i=0; i < child_contracts.length; i ){
if(child_contracts[i]==_child_address){
isExist = true;
}
}
require(isExist==true, "Parent: Address entered is not in child list.");
CHILD token = CHILD(payable(_child_address));
token.enable_tax();
}

function disable_tax_for_child(address _child_address) public onlyOwner {
bool isExist = false;
for(uint256 i=0; i < child_contracts.length; i ){
if(child_contracts[i]==_child_address){
isExist = true;
}
}
require(isExist==true, "Parent: Address entered is not in child list.");
CHILD token = CHILD(payable(_child_address));
token.disable_tax();
}

function _transfer(address sender, address recipient, uint256 amount) internal override virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");

require(amount > 0, "Zero Amount!");
require(check_blacklist()==false, "Parent: Blacklisted Address");
_beforeTokenTransfer(sender, recipient, amount);

uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
_balances[sender] = senderBalance - amount;

if(sender != address(this) && tax_enabled) {
uint256 tax_amount = amount.mul(lp_tax).div(100);
uint256 transfer_amount = amount - tax_amount;
_balances[address(this)] = tax_amount;


if(sender != address(uniswapV2Pair)){
uint256 contractTokenBalance = balanceOf(address(this));

//add liquidity
swapAndLiquify(contractTokenBalance);
}

_balances[recipient] = transfer_amount;
emit Transfer(sender, recipient, transfer_amount);
} else {
_balances[recipient] = amount;
emit Transfer(sender, recipient, amount);
}
}


}