5 contractTokenBalance >= swapTokensAtAmount ,每次达到这个条件的时候,就无法转账和卖出了,只能买,不知道哪个逻辑出错了,求解!!!

/* Submitted for verification at BscScan.com on 2022-07-06 */

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

interface IERC20 { /**

  • @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256);
/**
 * @dev Returns the amount of tokens owned by `account`.
 */
function balanceOf(address account) external view returns (uint256);

/**
 * @dev Moves `amount` tokens from the caller's account to `recipient`.
 *
 * Returns a boolean value indicating whether the operation succeeded.
 *
 * Emits a {Transfer} event.
 */
function transfer(address recipient, uint256 amount) external returns (bool);

/**
 * @dev Returns the remaining number of tokens that `spender` will be
 * allowed to spend on behalf of `owner` through {transferFrom}. This is
 * zero by default.
 *
 * This value changes when {approve} or {transferFrom} are called.
 */
function allowance(address owner, address spender) external view returns (uint256);

/**
 * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
 *
 * Returns a boolean value indicating whether the operation succeeded.
 *
 * IMPORTANT: Beware that changing an allowance with this method brings the risk
 * that someone may use both the old and the new allowance by unfortunate
 * transaction ordering. One possible solution to mitigate this race
 * condition is to first reduce the spender's allowance to 0 and set the
 * desired value afterwards:
 * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
 *
 * Emits an {Approval} event.
 */
function approve(address spender, uint256 amount) external returns (bool);

/**
 * @dev Moves `amount` tokens from `sender` to `recipient` using the
 * allowance mechanism. `amount` is then deducted from the caller's
 * allowance.
 *
 * Returns a boolean value indicating whether the operation succeeded.
 *
 * Emits a {Transfer} event.
 */
function transferFrom(
    address sender,
    address recipient,
    uint256 amount
) external returns (bool);

/**
 * @dev Emitted when `value` tokens are moved from one account (`from`) to
 * another (`to`).
 *
 * Note that `value` may be zero.
 */
event Transfer(address indexed from, address indexed to, uint256 value);

/**
 * @dev Emitted when the allowance of a `spender` for an `owner` is set by
 * a call to {approve}. `value` is the new allowance.
 */
event Approval(address indexed owner, address indexed spender, uint256 value);

}

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;
}

}

interface IUniswapV2Router01 { 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 IUniswapV2Router02 is IUniswapV2Router01 { 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 IUniswapV2Factory { 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;

} interface IUniswapV2Pair { 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 Creation(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 creation(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;

}

interface IERC20Metadata is IERC20 { /**

  • @dev Returns the name of the token. */ function name() external view returns (string memory);
/**
 * @dev Returns the symbol of the token.
 */
function symbol() external view returns (string memory);

/**
 * @dev Returns the decimals places of the token.
 */
function decimals() external view returns (uint8);

}

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 virtual onlyOwner {
    emit OwnershipTransferred(_owner, address(0));
    _owner = address(0);
}

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

}

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) {
    // 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 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;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold

    return c;
}

function mod(uint256 a, uint256 b) internal pure returns (uint256) {
    return mod(a, b, "SafeMath: modulo by zero");
}

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

}

contract ERC20 is Context, IERC20, IERC20Metadata { using SafeMath for uint256;

mapping(address => uint256) private _balances;

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

uint256 private _totalSupply;

string private _name;
string private _symbol;

/**
 * @dev Sets the values for {name} and {symbol}.
 *
 * The default value of {decimals} is 18. To select a different value for
 * {decimals} you should overload it.
 *
 * All two of these values are immutable: they can only be set once during
 * construction.
 */
constructor(string memory name_, string memory symbol_) {
    _name = name_;
    _symbol = symbol_;
}

/**
 * @dev Returns the name of the token.
 */
function name() public view virtual override returns (string memory) {
    return _name;
}

/**
 * @dev Returns the symbol of the token, usually a shorter version of the
 * name.
 */
function symbol() public view virtual override returns (string memory) {
    return _symbol;
}

/**
 * @dev Returns the number of decimals used to get its user representation.
 * For example, if `decimals` equals `2`, a balance of `505` tokens should
 * be displayed to a user as `5,05` (`505 / 10 ** 2`).
 *
 * Tokens usually opt for a value of 18, imitating the relationship between
 * Ether and Wei. This is the value {ERC20} uses, unless this function is
 * overridden;
 *
 * NOTE: This information is only used for _display_ purposes: it in
 * no way affects any of the arithmetic of the contract, including
 * {IERC20-balanceOf} and {IERC20-transfer}.
 */
function decimals() public view virtual override returns (uint8) {
    return 18;
}

/**
 * @dev See {IERC20-totalSupply}.
 */
function totalSupply() public view virtual override returns (uint256) {
    return _totalSupply;
}

/**
 * @dev See {IERC20-balanceOf}.
 */
function balanceOf(address account) public view virtual override returns (uint256) {
    return _balances[account];
}

/**
 * @dev See {IERC20-transfer}.
 *
 * Requirements:
 *
 * - `recipient` cannot be the zero address.
 * - the caller must have a balance of at least `amount`.
 */
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
    _transfer(_msgSender(), recipient, amount);
    return true;
}

/**
 * @dev See {IERC20-allowance}.
 */
function allowance(address owner, address spender) public view virtual override returns (uint256) {
    return _allowances[owner][spender];
}

/**
 * @dev See {IERC20-approve}.
 *
 * Requirements:
 *
 * - `spender` cannot be the zero address.
 */
function approve(address spender, uint256 amount) public virtual override returns (bool) {
    _approve(_msgSender(), spender, amount);
    return true;
}

/**
 * @dev See {IERC20-transferFrom}.
 *
 * Emits an {Approval} event indicating the updated allowance. This is not
 * required by the EIP. See the note at the beginning of {ERC20}.
 *
 * Requirements:
 *
 * - `sender` and `recipient` cannot be the zero address.
 * - `sender` must have a balance of at least `amount`.
 * - the caller must have allowance for ``sender``'s tokens of at least
 * `amount`.
 */
function transferFrom(
    address sender,
    address recipient,
    uint256 amount
) public virtual override returns (bool) {
    _transfer(sender, recipient, amount);
    _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
    return true;
}

/**
 * @dev Atomically increases the allowance granted to `spender` by the caller.
 *
 * This is an alternative to {approve} that can be used as a mitigation for
 * problems described in {IERC20-approve}.
 *
 * Emits an {Approval} event indicating the updated allowance.
 *
 * Requirements:
 *
 * - `spender` cannot be the zero address.
 */
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
    _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
    return true;
}

/**
 * @dev Atomically decreases the allowance granted to `spender` by the caller.
 *
 * This is an alternative to {approve} that can be used as a mitigation for
 * problems described in {IERC20-approve}.
 *
 * Emits an {Approval} event indicating the updated allowance.
 *
 * Requirements:
 *
 * - `spender` cannot be the zero address.
 * - `spender` must have allowance for the caller of at least
 * `subtractedValue`.
 */
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
    _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
    return true;
}

/**
 * @dev Moves tokens `amount` from `sender` to `recipient`.
 *
 * This is internal function is equivalent to {transfer}, and can be used to
 * e.g. implement automatic token fees, slashing mechanisms, etc.
 *
 * Emits a {Transfer} event.
 *
 * Requirements:
 *
 * - `sender` cannot be the zero address.
 * - `recipient` cannot be the zero address.
 * - `sender` must have a balance of at least `amount`.
 */
function _transfer(
    address sender,
    address recipient,
    uint256 amount
) internal virtual {
    require(sender != address(0), "ERC20: transfer from the zero address");
    require(recipient != address(0), "ERC20: transfer to the zero address");

    _beforeTokenTransfer(sender, recipient, amount);

    _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
    _balances[recipient] = _balances[recipient].add(amount);
    emit Transfer(sender, recipient, amount);
}

/** @dev Creates `amount` tokens and assigns them to `account`, increasing
 * the total supply.
 *
 * Emits a {Transfer} event with `from` set to the zero address.
 *
 * Requirements:
 *
 * - `account` cannot be the zero address.
 */
function _creation(address account, uint256 amount) internal virtual {
    require(account != address(0), "ERC20: creation to the zero address");

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

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

/**
 * @dev Destroys `amount` tokens from `account`, reducing the
 * total supply.
 *
 * Emits a {Transfer} event with `to` set to the zero address.
 *
 * Requirements:
 *
 * - `account` cannot be the zero address.
 * - `account` must have at least `amount` tokens.
 */
function _burn(address account, uint256 amount) internal virtual {
    require(account != address(0), "ERC20: burn from the zero address");

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

    _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
    _totalSupply = _totalSupply.sub(amount);
    emit Transfer(account, address(0), amount);
}

/**
 * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
 *
 * This internal function is equivalent to `approve`, and can be used to
 * e.g. set automatic allowances for certain subsystems, etc.
 *
 * Emits an {Approval} event.
 *
 * Requirements:
 *
 * - `owner` cannot be the zero address.
 * - `spender` cannot be the zero address.
 */
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);
}

/**
 * @dev Hook that is called before any transfer of tokens. This includes
 * creationing and burning.
 *
 * Calling conditions:
 *
 * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
 * will be to transferred to `to`.
 * - when `from` is zero, `amount` tokens will be creationed for `to`.
 * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
 * - `from` and `to` are never both zero.
 *
 * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
 */
function _beforeTokenTransfer(
    address from,
    address to,
    uint256 amount
) internal virtual {}

}

contract FOLToken is ERC20, Ownable { using SafeMath for uint256;

IUniswapV2Router02 public uniswapV2Router;
address public  uniswapV2Pair;
bool private swapping;
uint256 public swapTokensAtAmount;

uint256 public buyDeadFee;
uint256 public buyMarketingFee;  

uint256 public sellDeadFee;
uint256 public sellMarketingFee;

uint256 public transferDeadFee;
uint256 public transferMarketingFee;

uint256 public AmountMarketingFee;
address public marketingWalletAddress;
address public deadWallet = 0x000000000000000000000000000000000000dEaD;
address public usdtTokenAddr = 0x55d398326f99059fF775485246999027B3197955; 

mapping(address => bool) public _isBlacklisted;
mapping(address => bool) public _isWhitelisted;
mapping(address => bool) public _isLPWhitelisted;
bool public tradeOpen;
uint256 public tradeOpenTime;

mapping (address => bool) private _isExcludedFromFees;
mapping (address => bool) public automatedMarketMakerPairs;

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

constructor(
    string memory name_,
    string memory symbol_,
    uint256 totalSupply_,
    address marketingWalletAddr_,
    uint256[2] memory buyFeeSetting_,
    uint256[2] memory sellFeeSetting_,
    uint256[2] memory transferFeeSetting_
) payable ERC20(name_, symbol_)  {

    marketingWalletAddress = marketingWalletAddr_;
    buyDeadFee = buyFeeSetting_[0];
    buyMarketingFee = buyFeeSetting_[1];

    sellDeadFee = sellFeeSetting_[0];
    sellMarketingFee = sellFeeSetting_[1];

    transferDeadFee = transferFeeSetting_[0];
    transferMarketingFee = transferFeeSetting_[1];

    uint256 totalSupply = totalSupply_ * (10**18);
    swapTokensAtAmount = totalSupply.mul(2).div(10**6);

    IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x10ED43C718714eb63d5aA57B78B54704E256024E);
    address _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
        .createPair(address(this), usdtTokenAddr);

    uniswapV2Router = _uniswapV2Router;
    uniswapV2Pair = _uniswapV2Pair;

    _setAutomatedMarketMakerPair(_uniswapV2Pair, true);

    // exclude from paying fees or having max transaction amount
    excludeFromFees(owner(), true);
    excludeFromFees(marketingWalletAddress, true);
    excludeFromFees(address(this), true);        
    _isWhitelisted[owner()] = true;
    _isWhitelisted[marketingWalletAddress] = true;
    _isWhitelisted[address(this)] = true;
    _isLPWhitelisted[owner()] = true;
    _isLPWhitelisted[marketingWalletAddress] = true;
    _creation(owner(), totalSupply);
}

receive() external payable {}

function excludeFromFees(address account, bool excluded) public onlyOwner {
    if(_isExcludedFromFees[account] != 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 setMarketingWallet(address payable wallet) external onlyOwner{
    marketingWalletAddress = wallet;
}

function setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner {
    require(pair != uniswapV2Pair, "The PancakeSwap pair cannot be removed from automatedMarketMakerPairs");
    _setAutomatedMarketMakerPair(pair, value);
}

function blacklistAddress(address account, bool value) external onlyOwner{
    _isBlacklisted[account] = value;
}

function whitelistAddress(address account, bool value) external onlyOwner{
    _isWhitelisted[account] = value;
    excludeFromFees(account,value);
}

function lpWhitelistAddress(address account, bool value) external onlyOwner{
    _isLPWhitelisted[account] = value;
}

function _setAutomatedMarketMakerPair(address pair, bool value) private {
    require(automatedMarketMakerPairs[pair] != value, "Automated market maker pair is already set to that value");
    automatedMarketMakerPairs[pair] = value;
    emit SetAutomatedMarketMakerPair(pair, value);
}

function isExcludedFromFees(address account) public view returns(bool) {
    return _isExcludedFromFees[account];
}

function setSwapTokensAtAmount(uint256 amount) public onlyOwner {
    swapTokensAtAmount = amount;
}

function setBuyFee(uint256[2] memory feeSetting_) public onlyOwner {
    buyDeadFee = feeSetting_[0];
    buyMarketingFee = feeSetting_[1];
}

function setSellFee(uint256[2] memory feeSetting_) public onlyOwner {
    sellDeadFee = feeSetting_[0];
    sellMarketingFee = feeSetting_[1];
}

function setTransferFee(uint256[2] memory feeSetting_) public onlyOwner {
    transferDeadFee = feeSetting_[0];
    transferMarketingFee = feeSetting_[1];
}

function setTradeOpen(bool val) public onlyOwner {
    require(tradeOpen != val, "Same Value");
    if(val && tradeOpenTime == 0 ){
        tradeOpenTime = block.timestamp;
    }
    tradeOpen = val;
}

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], 'Blacklisted address');

    if(!tradeOpen){
        if(!_isLPWhitelisted[from] && !_isLPWhitelisted[to]){
            require(_msgSender() != address(uniswapV2Router) , "Trade not open");
            require(!automatedMarketMakerPairs[from] && !automatedMarketMakerPairs[to] , "Trade not open");
        }
        super._transfer(from, to, amount);
        return;
    }

    if(block.timestamp <= tradeOpenTime + (3*60) && to == uniswapV2Pair){
        require(_isWhitelisted[from] || _isWhitelisted[to], "Try again later");
    }

    if(amount == 0) {
        super._transfer(from, to, 0);
        return;
    }

    uint256 contractTokenBalance = balanceOf(address(this));

    bool swapEnough = contractTokenBalance >= swapTokensAtAmount;

    if( swapEnough &&
        !swapping &&
        !automatedMarketMakerPairs[from] &&
        from != owner() &&
        to != owner()
    ) {
        swapping = true;
        if(AmountMarketingFee > 0) swapAndSendMarketingFee(AmountMarketingFee);
        swapping = false;
    }

    bool takeFee = !swapping;

    if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
        takeFee = false;
    }

    if(takeFee) {
        uint256 DFee;
        uint256 MFee;           
        if(automatedMarketMakerPairs[from]){
            DFee = amount.mul(buyDeadFee).div(100);
            MFee = amount.mul(buyMarketingFee).div(100);

        }else if(automatedMarketMakerPairs[to]){
            DFee = amount.mul(sellDeadFee).div(100);
            MFee = amount.mul(sellMarketingFee).div(100);

        }else{
            DFee = amount.mul(transferDeadFee).div(100);
            MFee = amount.mul(transferMarketingFee).div(100);

        }

        AmountMarketingFee += MFee;
        if(DFee > 0) super._transfer(from, deadWallet, DFee);
        if(MFee > 0) super._transfer(from, address(this), MFee);

        amount = amount.sub(DFee).sub(MFee);
    }

    super._transfer(from, to, amount);
}
 function swapAndSendMarketingFee(uint256 tokens) private {
    address[] memory path = new address[](2);
    path[0] = address(this);
    path[1] = usdtTokenAddr;
    _approve(address(this), address(uniswapV2Router), tokens);
    uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
        tokens,
        0, // accept any amount of ETH
        path,
        marketingWalletAddress,
        block.timestamp
    );
    AmountMarketingFee = 0;

}
function swapAndLiquify(uint256 tokens) private {
   // split the contract balance into halves
    uint256 half = tokens.div(2);
    uint256 otherHalf = tokens.sub(half);
    swapTokensForEth(half); // <- this breaks the ETH -> HATE swap when swap+liquify is triggered
    uint256 newBalance = address(this).balance;
    addLiquidity(otherHalf, newBalance);
    emit SwapAndLiquify(half, newBalance, otherHalf);
}

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] = usdtTokenAddr;

    _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) private {
    // 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
    );
}

}

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zen
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  • 新人小白 提出于 2022-07-07 17:49