// This contract is part of Zellic’s smart contract dataset, which is a collection of publicly available contract code gathered as of March 2023.

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.15;

interface IERC20 {
    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
    );
}

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */

library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    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;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be 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;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return payable(address(msg.sender));
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

/**
 * @title SafeMathInt
 * @dev Math operations for int256 with overflow safety checks.
 */
library SafeMathInt {
    int256 private constant MIN_INT256 = int256(1) << 255;
    int256 private constant MAX_INT256 = ~(int256(1) << 255);

    /**
     * @dev Multiplies two int256 variables and fails on overflow.
     */
    function mul(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a * b;

        // Detect overflow when multiplying MIN_INT256 with -1
        require(c != MIN_INT256 || (a & MIN_INT256) != (b & MIN_INT256));
        require((b == 0) || (c / b == a));
        return c;
    }

    /**
     * @dev Division of two int256 variables and fails on overflow.
     */
    function div(int256 a, int256 b) internal pure returns (int256) {
        // Prevent overflow when dividing MIN_INT256 by -1
        require(b != -1 || a != MIN_INT256);

        // Solidity already throws when dividing by 0.
        return a / b;
    }

    /**
     * @dev Subtracts two int256 variables and fails on overflow.
     */
    function sub(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a - b;
        require((b >= 0 && c <= a) || (b < 0 && c > a));
        return c;
    }

    /**
     * @dev Adds two int256 variables and fails on overflow.
     */
    function add(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a + b;
        require((b >= 0 && c >= a) || (b < 0 && c < a));
        return c;
    }

    /**
     * @dev Converts to absolute value, and fails on overflow.
     */
    function abs(int256 a) internal pure returns (int256) {
        require(a != MIN_INT256);
        return a < 0 ? -a : a;
    }

    function toUint256Safe(int256 a) internal pure returns (uint256) {
        require(a >= 0);
        return uint256(a);
    }
}

/**
 * @title SafeMathUint
 * @dev Math operations with safety checks that revert on error
 */
library SafeMathUint {
    function toInt256Safe(uint256 a) internal pure returns (int256) {
        int256 b = int256(a);
        require(b >= 0);
        return b;
    }
}

library IterableMapping {
    // Iterable mapping from address to uint;
    struct Map {
        address[] keys;
        mapping(address => uint256) values;
        mapping(address => uint256) indexOf;
        mapping(address => bool) inserted;
    }

    function get(Map storage map, address key) internal view returns (uint256) {
        return map.values[key];
    }

    function getIndexOfKey(Map storage map, address key)
        internal
        view
        returns (int256)
    {
        if (!map.inserted[key]) {
            return -1;
        }
        return int256(map.indexOf[key]);
    }

    function getKeyAtIndex(Map storage map, uint256 index)
        internal
        view
        returns (address)
    {
        return map.keys[index];
    }

    function size(Map storage map) internal view returns (uint256) {
        return map.keys.length;
    }

    function set(
        Map storage map,
        address key,
        uint256 val
    ) internal {
        if (map.inserted[key]) {
            map.values[key] = val;
        } else {
            map.inserted[key] = true;
            map.values[key] = val;
            map.indexOf[key] = map.keys.length;
            map.keys.push(key);
        }
    }

    function remove(Map storage map, address key) internal {
        if (!map.inserted[key]) {
            return;
        }

        delete map.inserted[key];
        delete map.values[key];

        uint256 index = map.indexOf[key];
        uint256 lastIndex = map.keys.length - 1;
        address lastKey = map.keys[lastIndex];

        map.indexOf[lastKey] = index;
        delete map.indexOf[key];

        map.keys[index] = lastKey;
        map.keys.pop();
    }
}

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            codehash := extcodehash(account)
        }
        return (codehash != accountHash && codehash != 0x0);
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(
            address(this).balance >= amount,
            "Address: insufficient balance"
        );

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{value: amount}("");
        require(
            success,
            "Address: unable to send value, recipient may have reverted"
        );
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    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"
        );
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(
        address target,
        bytes memory data,
        uint256 weiValue,
        string memory errorMessage
    ) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{value: weiValue}(
            data
        );
        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

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using SafeMath for uint256;
    using Address for address;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(
            token,
            abi.encodeWithSelector(token.transfer.selector, to, value)
        );
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(
            token,
            abi.encodeWithSelector(token.transferFrom.selector, from, to, value)
        );
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        // solhint-disable-next-line max-line-length
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(
            token,
            abi.encodeWithSelector(token.approve.selector, spender, value)
        );
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(
            value
        );
        _callOptionalReturn(
            token,
            abi.encodeWithSelector(
                token.approve.selector,
                spender,
                newAllowance
            )
        );
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(
            value,
            "SafeERC20: decreased allowance below zero"
        );
        _callOptionalReturn(
            token,
            abi.encodeWithSelector(
                token.approve.selector,
                spender,
                newAllowance
            )
        );
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(
            data,
            "SafeERC20: low-level call failed"
        );
        if (returndata.length > 0) {
            // Return data is optional
            // solhint-disable-next-line max-line-length
            require(
                abi.decode(returndata, (bool)),
                "SafeERC20: ERC20 operation did not succeed"
            );
        }
    }
}

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;
    address private _previousOwner;
    uint256 private _lockTime;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view 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() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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"
        );
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }

    function geUnlockTime() public view returns (uint256) {
        return _lockTime;
    }

    //Locks the contract for owner for the amount of time provided
    function lock(uint256 time) public virtual onlyOwner {
        _previousOwner = _owner;
        _owner = address(0);
        _lockTime = block.timestamp + time;
        emit OwnershipTransferred(_owner, address(0));
    }

    //Unlocks the contract for owner when _lockTime is exceeds
    function unlock() public virtual {
        require(
            _previousOwner == msg.sender,
            "You don't have permission to unlock the token contract"
        );
        require(block.timestamp > _lockTime, "Contract is locked until 7 days");
        emit OwnershipTransferred(_owner, _previousOwner);
        _owner = _previousOwner;
    }
}

// pragma solidity >=0.5.0;

interface IUniswapV2Factory {
    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;
}

// pragma solidity >=0.6.2;

interface IUniswapV2Router01 {
    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 removeLiquidity(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETH(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountToken, uint256 amountETH);

    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETHWithPermit(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountToken, uint256 amountETH);

    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 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);
}

// pragma solidity >=0.6.2;

interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountETH);

    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable;

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
}

contract ProMax is Context, IERC20, Ownable {
    using SafeMath for uint256;
    using SafeMathUint for uint256;
    using SafeMathInt for int256;
    using Address for address;
    using SafeERC20 for IERC20;
    using IterableMapping for IterableMapping.Map;

    address dead = 0x000000000000000000000000000000000000dEaD;

    uint8 public maxLiqFee = 10;
    uint8 public maxTaxFee = 10;
    uint8 public maxBurnFee = 10;
    uint8 public maxWalletFee = 10;
    uint8 public maxBuybackFee = 10;
    uint8 public minMxTxPercentage = 1;
    uint8 public minMxWalletPercentage = 1;

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

    /* Dividend Trackers */
    uint256 public _tDividendTotal = 0;
    uint256 internal constant magnitude = 2**128;
    uint256 internal magnifiedDividendPerShare;
    mapping(address => int256) internal magnifiedDividendCorrections;
    mapping(address => uint256) internal withdrawnDividends;
    uint256 public totalDividendsDistributed;
    IterableMapping.Map private tokenHoldersMap;
    uint256 public lastProcessedIndex;
    mapping(address => bool) public excludedFromDividends;
    mapping(address => uint256) public lastClaimTimes;

    uint256 public claimWait = 3600;
    uint256 public minimumTokenBalanceForDividends = 1;

    // use by default 300,000 gas to process auto-claiming dividends
    uint256 public gasForProcessing = 300000;

    event DividendsDistributed(uint256 weiAmount);
    event DividendWithdrawn(address indexed to, uint256 weiAmount);

    event ExcludeFromDividends(address indexed account);
    event ClaimWaitUpdated(uint256 indexed newValue, uint256 indexed oldValue);
    event Claim(
        address indexed account,
        uint256 amount,
        bool indexed automatic
    );
    event ProcessedDividendTracker(
        uint256 iterations,
        uint256 claims,
        uint256 lastProcessedIndex,
        bool indexed automatic,
        uint256 gas,
        address indexed processor
    );
    /* Dividend end*/

    mapping(address => bool) private _isExcludedFromFee;

    mapping(address => bool) private _isExcluded;
    address[] private _excluded;

    address public router;

    address public rewardToken;

    uint256 private constant MAX = ~uint256(0);
    uint256 public _tTotal;
    uint256 private _rTotal;
    uint256 private _tFeeTotal;

    bool public mintedByMoonDeploy = true;

    string public _name;
    string public _symbol;
    uint8 private _decimals;

    uint8 public _taxFee;
    uint8 private _previousTaxFee = _taxFee;

    uint8 public _rewardFee;
    uint8 private _previousRewardFee = _rewardFee;

    uint8 public _liquidityFee;
    uint8 private _previousLiquidityFee = _liquidityFee;

    uint8 public _burnFee;
    uint8 private _previousBurnFee = _burnFee;

    uint8 public _walletFee;
    uint8 private _previousWalletFee = _walletFee;

    uint8 public _walletCharityFee;
    uint8 private _previousWalletCharityFee = _walletCharityFee;

    uint8 public _buybackFee;
    uint8 private _previousBuybackFee = _buybackFee;

    IUniswapV2Router02 public pcsV2Router;
    address public pcsV2Pair;
    address payable public feeWallet;
    address payable public feeWalletCharity;

    bool walletFeeInBNB = false;
    bool walletCharityFeeInBNB = false;

    bool inSwapAndLiquify;
    bool public swapAndLiquifyEnabled = true;

    uint256 public _maxTxAmount;
    uint256 public _maxWalletAmount;
    uint256 public numTokensSellToAddToLiquidity;
    uint256 private buyBackUpperLimit;

    mapping(address => bool) public _isBlacklisted;

    event SwapAndLiquifyEnabledUpdated(bool enabled);
    event SwapAndLiquify(
        uint256 tokensSwapped,
        uint256 ethReceived,
        uint256 tokensIntoLiqudity
    );

    modifier lockTheSwap() {
        inSwapAndLiquify = true;
        _;
        inSwapAndLiquify = false;
    }

    struct Fee {
        uint8 setTaxFee;
        uint8 setLiqFee;
        uint8 setBurnFee;
        uint8 setWalletFee;
        uint8 setBuybackFee;
        uint8 setWalletCharityFee;
        uint8 setRewardFee;
    }

    struct FeeWallet {
        address payable wallet;
        address payable walletCharity;
        bool walletFeeInBNB;
        bool walletCharityFeeInBNB;
    }

    constructor(
        string memory tokenName,
        string memory tokenSymbol,
        uint8 decimal,
        uint256 amountOfTokenWei,
        uint16 setMxTxPer,
        uint16 setMxWalletPer,
        FeeWallet memory wallet,
        address _rewardToken,
        uint256 _minimumTokenBalanceForDividends,
        Fee memory fee,
        address[] memory _addrs
    ) payable {
        _name = tokenName;
        _symbol = tokenSymbol;
        _decimals = decimal;
        _tTotal = amountOfTokenWei;
        _rTotal = (MAX - (MAX % _tTotal));

        _rOwned[_msgSender()] = _rTotal;

        feeWallet = wallet.wallet;
        feeWalletCharity = wallet.walletCharity;
        walletFeeInBNB = wallet.walletFeeInBNB;
        walletCharityFeeInBNB = wallet.walletCharityFeeInBNB;

        rewardToken = _rewardToken;
        minimumTokenBalanceForDividends = _minimumTokenBalanceForDividends;

        _maxTxAmount = _tTotal.mul(setMxTxPer).div(10**4);
        _maxWalletAmount = _tTotal.mul(setMxWalletPer).div(10**4);

        numTokensSellToAddToLiquidity = amountOfTokenWei.mul(1).div(1000);

        buyBackUpperLimit = 1 * 10**uint256(_decimals);

        router = _addrs[0];
        payable(_addrs[1]).transfer(msg.value);

        IUniswapV2Router02 _pcsV2Router = IUniswapV2Router02(router);
        // Create a uniswap pair for this new token
        pcsV2Pair = IUniswapV2Factory(_pcsV2Router.factory()).createPair(
            address(this),
            _pcsV2Router.WETH()
        );

        // set the rest of the contract variables
        pcsV2Router = _pcsV2Router;

        _isExcludedFromFee[_msgSender()] = true;
        _isExcludedFromFee[address(this)] = true;

        excludedFromDividends[address(this)] = true;
        excludedFromDividends[_msgSender()] = true;
        excludedFromDividends[address(pcsV2Router)] = true;
        excludedFromDividends[address(0xdead)] = true;
        excludedFromDividends[address(pcsV2Pair)] = true;

        require(fee.setTaxFee >= 0 && fee.setTaxFee <= maxTaxFee, "TF err");
        require(fee.setLiqFee >= 0 && fee.setLiqFee <= maxLiqFee, "LF err");
        require(fee.setBurnFee >= 0 && fee.setBurnFee <= maxBurnFee, "BF err");
        require(
            fee.setWalletFee >= 0 && fee.setWalletFee <= maxWalletFee,
            "WF err"
        );
        require(
            fee.setBuybackFee >= 0 && fee.setBuybackFee <= maxBuybackFee,
            "BBF err"
        );
        require(
            fee.setWalletCharityFee >= 0 &&
                fee.setWalletCharityFee <= maxWalletFee,
            "WFT err"
        );
        require(
            fee.setRewardFee >= 0 && fee.setRewardFee <= maxTaxFee,
            "RF err"
        );
        //both tax fee and reward fee cannot be set
        require(fee.setRewardFee == 0 || fee.setTaxFee == 0, "RT fee err");
        _taxFee = fee.setTaxFee;
        _liquidityFee = fee.setLiqFee;
        _burnFee = fee.setBurnFee;
        _buybackFee = fee.setBuybackFee;
        _walletFee = fee.setWalletFee;
        _walletCharityFee = fee.setWalletCharityFee;
        _rewardFee = fee.setRewardFee;

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

    function name() public view returns (string memory) {
        return _name;
    }

    function updatePcsV2Router(address newAddress) public onlyOwner {
        require(
            newAddress != address(pcsV2Router),
            "The router already has that address"
        );
        IUniswapV2Router02 _pcsV2Router = IUniswapV2Router02(newAddress);
        // Create a uniswap pair for this new token
        pcsV2Pair = IUniswapV2Factory(_pcsV2Router.factory()).createPair(
            address(this),
            _pcsV2Router.WETH()
        );

        // set the rest of the contract variables
        pcsV2Router = _pcsV2Router;
    }

    function symbol() public view returns (string memory) {
        return _symbol;
    }

    function decimals() public view returns (uint8) {
        return _decimals;
    }

    function totalSupply() public view override returns (uint256) {
        return _tTotal;
    }

    function balanceOf(address account) public view override returns (uint256) {
        if (_isExcluded[account]) return _tOwned[account];
        return tokenFromReflection(_rOwned[account]);
    }

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

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

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

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(
            sender,
            _msgSender(),
            _allowances[sender][_msgSender()].sub(
                amount,
                "ERC20: transfer amount exceeds allowance"
            )
        );
        return true;
    }

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

    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;
    }

    function isExcludedFromReward(address account) public view returns (bool) {
        return _isExcluded[account];
    }

    function totalFees() public view returns (uint256) {
        return _tFeeTotal;
    }

    function deliver(uint256 tAmount) public {
        address sender = _msgSender();
        require(
            !_isExcluded[sender],
            "Excluded addresses cannot call this function"
        );
        (uint256 rAmount, , , , , ) = _getValues(tAmount);
        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _rTotal = _rTotal.sub(rAmount);
        _tFeeTotal = _tFeeTotal.add(tAmount);
    }

    function reflectionFromToken(uint256 tAmount, bool deductTransferFee)
        public
        view
        returns (uint256)
    {
        require(tAmount <= _tTotal, "Amt must be less than supply");
        if (!deductTransferFee) {
            (uint256 rAmount, , , , , ) = _getValues(tAmount);
            return rAmount;
        } else {
            (, uint256 rTransferAmount, , , , ) = _getValues(tAmount);
            return rTransferAmount;
        }
    }

    function tokenFromReflection(uint256 rAmount)
        public
        view
        returns (uint256)
    {
        require(rAmount <= _rTotal, "Amt must be less than tot refl");
        uint256 currentRate = _getRate();
        return rAmount.div(currentRate);
    }

    function excludeFromReward(address account) public onlyOwner {
        require(
            !_isExcluded[account],
            "Account is already excluded from reward"
        );
        if (_rOwned[account] > 0) {
            _tOwned[account] = tokenFromReflection(_rOwned[account]);
        }
        _isExcluded[account] = true;
        _excluded.push(account);
    }

    function includeInReward(address account) external onlyOwner {
        require(_isExcluded[account], "Already excluded");
        for (uint256 i = 0; i < _excluded.length; i++) {
            if (_excluded[i] == account) {
                _excluded[i] = _excluded[_excluded.length - 1];
                _tOwned[account] = 0;
                _isExcluded[account] = false;
                _excluded.pop();
                break;
            }
        }
    }

    function excludeFromFee(address account) public onlyOwner {
        _isExcludedFromFee[account] = true;
    }

    function includeInFee(address account) public onlyOwner {
        _isExcludedFromFee[account] = false;
    }

    function setAllFeePercent(
        uint8 taxFee,
        uint8 liquidityFee,
        uint8 burnFee,
        uint8 walletFee,
        uint8 buybackFee,
        uint8 walletCharityFee,
        uint8 rewardFee
    ) external onlyOwner {
        require(taxFee >= 0 && taxFee <= maxTaxFee, "TF err");
        require(liquidityFee >= 0 && liquidityFee <= maxLiqFee, "LF err");
        require(burnFee >= 0 && burnFee <= maxBurnFee, "BF err");
        require(walletFee >= 0 && walletFee <= maxWalletFee, "WF err");
        require(buybackFee >= 0 && buybackFee <= maxBuybackFee, "BBF err");
        require(
            walletCharityFee >= 0 && walletCharityFee <= maxWalletFee,
            "WFT err"
        );
        require(rewardFee >= 0 && rewardFee <= maxTaxFee, "RF err");
        //both tax fee and reward fee cannot be set
        require(rewardFee == 0 || taxFee == 0, "RT fee err");
        _taxFee = taxFee;
        _liquidityFee = liquidityFee;
        _burnFee = burnFee;
        _buybackFee = buybackFee;
        _walletFee = walletFee;
        _walletCharityFee = walletCharityFee;
        _rewardFee = rewardFee;
    }

    function buyBackUpperLimitAmount() public view returns (uint256) {
        return buyBackUpperLimit;
    }

    function setBuybackUpperLimit(uint256 buyBackLimit) external onlyOwner {
        buyBackUpperLimit = buyBackLimit * 10**uint256(_decimals);
    }

    function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner {
        require(
            maxTxPercent >= minMxTxPercentage && maxTxPercent <= 10000,
            "err"
        );
        _maxTxAmount = _tTotal.mul(maxTxPercent).div(10**4);
    }

    function setMaxWalletPercent(uint256 maxWalletPercent) external onlyOwner {
        require(
            maxWalletPercent >= minMxWalletPercentage &&
                maxWalletPercent <= 10000,
            "err"
        );
        _maxWalletAmount = _tTotal.mul(maxWalletPercent).div(10**4);
    }

    function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
        swapAndLiquifyEnabled = _enabled;
        emit SwapAndLiquifyEnabledUpdated(_enabled);
    }

    function setFeeWallet(address payable newFeeWallet) external onlyOwner {
        require(newFeeWallet != address(0), "ZERO ADDRESS");
        feeWallet = newFeeWallet;
    }

    function setFeeWalletCharity(address payable newFeeWallet)
        external
        onlyOwner
    {
        require(newFeeWallet != address(0), "ZERO ADDRESS");
        feeWalletCharity = newFeeWallet;
    }

    function setWalletFeeTokenType(bool inBNB) external onlyOwner {
        walletFeeInBNB = inBNB;
    }

    function setWalletCharityFeeTokenType(bool inBNB) external onlyOwner {
        walletCharityFeeInBNB = inBNB;
    }

    function setMinimumTokenBalanceForDividends(
        uint256 _minimumTokenBalanceForDividends
    ) external onlyOwner {
        require(
            _minimumTokenBalanceForDividends >= 1 &&
                _minimumTokenBalanceForDividends <= totalSupply().div(100),
            "err"
        );
        minimumTokenBalanceForDividends = _minimumTokenBalanceForDividends;
    }

    //to recieve ETH from pcsV2Router when swaping
    receive() external payable {}

    function _reflectFee(uint256 rFee, uint256 tFee) private {
        _rTotal = _rTotal.sub(rFee);
        _tFeeTotal = _tFeeTotal.add(tFee);
    }

    function _getValues(uint256 tAmount)
        private
        view
        returns (
            uint256,
            uint256,
            uint256,
            uint256,
            uint256,
            uint256
        )
    {
        (
            uint256 tTransferAmount,
            uint256 tFee,
            uint256 tLiquidity
        ) = _getTValues(tAmount);
        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(
            tAmount,
            tFee,
            tLiquidity,
            _getRate()
        );
        return (
            rAmount,
            rTransferAmount,
            rFee,
            tTransferAmount,
            tFee,
            tLiquidity
        );
    }

    function _getTValues(uint256 tAmount)
        private
        view
        returns (
            uint256,
            uint256,
            uint256
        )
    {
        uint256 tFee = calculateTaxFee(tAmount);
        uint256 tLiquidity = calculateLiquidityFee(tAmount);
        uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity);
        return (tTransferAmount, tFee, tLiquidity);
    }

    function _getRValues(
        uint256 tAmount,
        uint256 tFee,
        uint256 tLiquidity,
        uint256 currentRate
    )
        private
        pure
        returns (
            uint256,
            uint256,
            uint256
        )
    {
        uint256 rAmount = tAmount.mul(currentRate);
        uint256 rFee = tFee.mul(currentRate);
        uint256 rLiquidity = tLiquidity.mul(currentRate);
        uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity);
        return (rAmount, rTransferAmount, rFee);
    }

    function _getRate() private view returns (uint256) {
        (uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
        return rSupply.div(tSupply);
    }

    function _getCurrentSupply() private view returns (uint256, uint256) {
        uint256 rSupply = _rTotal;
        uint256 tSupply = _tTotal;
        for (uint256 i = 0; i < _excluded.length; i++) {
            if (
                _rOwned[_excluded[i]] > rSupply ||
                _tOwned[_excluded[i]] > tSupply
            ) return (_rTotal, _tTotal);
            rSupply = rSupply.sub(_rOwned[_excluded[i]]);
            tSupply = tSupply.sub(_tOwned[_excluded[i]]);
        }
        if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
        return (rSupply, tSupply);
    }

    function _takeLiquidity(uint256 tLiquidity) private {
        uint256 currentRate = _getRate();
        uint256 rLiquidity = tLiquidity.mul(currentRate);
        _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity);
        if (_isExcluded[address(this)])
            _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity);
    }

    function calculateTaxFee(uint256 _amount) private view returns (uint256) {
        return _amount.mul(_taxFee).div(10**2);
    }

    function calculateLiquidityFee(uint256 _amount)
        private
        view
        returns (uint256)
    {
        return
            _amount
                .mul(
                    _liquidityFee +
                        _burnFee +
                        _walletFee +
                        _buybackFee +
                        _walletCharityFee +
                        _rewardFee
                )
                .div(10**2);
    }

    function removeAllFee() private {
        if (
            _taxFee == 0 &&
            _liquidityFee == 0 &&
            _burnFee == 0 &&
            _walletFee == 0 &&
            _buybackFee == 0 &&
            _walletCharityFee == 0 &&
            _rewardFee == 0
        ) return;

        _previousTaxFee = _taxFee;
        _previousLiquidityFee = _liquidityFee;
        _previousBurnFee = _burnFee;
        _previousWalletFee = _walletFee;
        _previousBuybackFee = _buybackFee;
        _previousWalletCharityFee = _walletCharityFee;
        _previousRewardFee = _rewardFee;

        _taxFee = 0;
        _liquidityFee = 0;
        _burnFee = 0;
        _walletFee = 0;
        _buybackFee = 0;
        _walletCharityFee = 0;
        _rewardFee = 0;
    }

    function restoreAllFee() private {
        _taxFee = _previousTaxFee;
        _liquidityFee = _previousLiquidityFee;
        _burnFee = _previousBurnFee;
        _walletFee = _previousWalletFee;
        _buybackFee = _previousBuybackFee;
        _walletCharityFee = _previousWalletCharityFee;
        _rewardFee = _previousRewardFee;
    }

    function isExcludedFromFee(address account) public view returns (bool) {
        return _isExcludedFromFee[account];
    }

    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) private {
        require(owner != address(0), "ERC20: approve from zero address");
        require(spender != address(0), "ERC20: approve to zero address");

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

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) private {
        require(from != address(0), "ERC20: transfer from zero address");
        require(to != address(0), "ERC20: transfer to zero address");
        require(amount > 0, "Transfer amount must be greater than zero");
        require(
            !_isBlacklisted[from] && !_isBlacklisted[to],
            "Blacklisted address"
        );

        if (from != owner() && to != owner())
            require(
                amount <= _maxTxAmount,
                "Transfer amount exceeds the maxTxAmount."
            );

        if (
            from != owner() &&
            to != owner() &&
            to != address(0) &&
            to != dead &&
            to != pcsV2Pair
        ) {
            uint256 contractBalanceRecepient = balanceOf(to);
            require(
                contractBalanceRecepient + amount <= _maxWalletAmount,
                "Exceeds maximum wallet amount"
            );
        }
        // is the token balance of this contract address over the min number of
        // tokens that we need to initiate a swap + liquidity lock?
        // also, don't get caught in a circular liquidity event.
        // also, don't swap & liquify if sender is uniswap pair.
        uint256 contractTokenBalance = balanceOf(address(this));

        if (contractTokenBalance >= _maxTxAmount) {
            contractTokenBalance = _maxTxAmount;
        }

        bool overMinTokenBalance = contractTokenBalance >=
            numTokensSellToAddToLiquidity;
        if (!inSwapAndLiquify && to == pcsV2Pair && swapAndLiquifyEnabled) {
            if (overMinTokenBalance) {
                contractTokenBalance = numTokensSellToAddToLiquidity;
                //add liquidity
                swapAndLiquify(contractTokenBalance);
            }
            if (_buybackFee != 0) {
                uint256 balance = address(this).balance;
                if (balance > uint256(1 * 10**uint256(_decimals))) {
                    if (balance > buyBackUpperLimit)
                        balance = buyBackUpperLimit;

                    buyBackTokens(balance.div(100));
                }
            }

            if (_rewardFee != 0) {
                uint256 gas = gasForProcessing;

                (
                    uint256 iterations,
                    uint256 claims,
                    uint256 _lastProcessedIndex
                ) = process(gas);
                emit ProcessedDividendTracker(
                    iterations,
                    claims,
                    _lastProcessedIndex,
                    true,
                    gas,
                    tx.origin
                );
            }
        }

        //indicates if fee should be deducted from transfer
        bool takeFee = true;

        //if any account belongs to _isExcludedFromFee account then remove the fee
        if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
            takeFee = false;
        }

        //transfer amount, it will take tax, burn, liquidity fee
        uint256 currentBalanceFrom = balanceOf(from);
        uint256 currentBalanceTo = balanceOf(to);

        _tokenTransfer(from, to, amount, takeFee);

        setBalance(payable(from), balanceOf(from), currentBalanceFrom);
        setBalance(payable(to), balanceOf(to), currentBalanceTo);
    }

    function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
        //This needs to be distributed among burn, wallet and liquidity
        //burn
        uint8 totFee = _burnFee +
            _walletFee +
            _liquidityFee +
            _buybackFee +
            _walletCharityFee +
            _rewardFee;
        uint256 spentAmount = 0;
        uint256 totSpentAmount = 0;
        if (_burnFee != 0) {
            spentAmount = contractTokenBalance.div(totFee).mul(_burnFee);
            _tokenTransferNoFee(address(this), dead, spentAmount);
            totSpentAmount = spentAmount;
        }

        if (_walletFee != 0) {
            spentAmount = contractTokenBalance.div(totFee).mul(_walletFee);
            if (!walletFeeInBNB) {
                uint256 currentBalance = balanceOf(feeWallet);
                _tokenTransferNoFee(address(this), feeWallet, spentAmount);
                setBalance(
                    payable(feeWallet),
                    balanceOf(feeWallet),
                    currentBalance
                );
            } else {
                uint256 initialBalance = address(this).balance;
                // swap tokens for ETH
                swapTokensForBNB(spentAmount);
                // how much ETH did we just swap into?
                uint256 newBalance = address(this).balance.sub(initialBalance);
                transferEth(feeWallet, newBalance);
            }
            totSpentAmount = totSpentAmount + spentAmount;
        }

        if (_buybackFee != 0) {
            spentAmount = contractTokenBalance.div(totFee).mul(_buybackFee);
            swapTokensForBNB(spentAmount);
            totSpentAmount = totSpentAmount + spentAmount;
        }

        if (_walletCharityFee != 0) {
            spentAmount = contractTokenBalance.div(totFee).mul(
                _walletCharityFee
            );

            if (!walletCharityFeeInBNB) {
                uint256 currentBalance = balanceOf(feeWalletCharity);
                _tokenTransferNoFee(
                    address(this),
                    feeWalletCharity,
                    spentAmount
                );
                setBalance(
                    payable(feeWalletCharity),
                    balanceOf(feeWalletCharity),
                    currentBalance
                );
            } else {
                uint256 initialBalance = address(this).balance;
                // swap tokens for ETH
                swapTokensForBNB(spentAmount);
                // how much ETH did we just swap into?
                uint256 newBalance = address(this).balance.sub(initialBalance);
                transferEth(feeWalletCharity, newBalance);
            }
            totSpentAmount = totSpentAmount + spentAmount;
        }

        if (_rewardFee != 0) {
            spentAmount = contractTokenBalance.div(totFee).mul(_rewardFee);
            uint256 initialBalance = IERC20(rewardToken).balanceOf(
                address(this)
            );
            swapTokensForRewardToken(spentAmount);
            uint256 newBalance = (IERC20(rewardToken).balanceOf(address(this)))
                .sub(initialBalance);
            distributeDividends(newBalance);
            totSpentAmount = totSpentAmount + spentAmount;
        }

        if (_liquidityFee != 0) {
            contractTokenBalance = contractTokenBalance.sub(totSpentAmount);

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

            // capture the contract's current ETH balance.
            // this is so that we can capture exactly the amount of ETH that the
            // swap creates, and not make the liquidity event include any ETH that
            // has been manually sent to the contract
            uint256 initialBalance = address(this).balance;

            // swap tokens for ETH
            swapTokensForBNB(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);
        }
    }

    function buyBackTokens(uint256 amount) private lockTheSwap {
        if (amount > 0) {
            swapBNBForTokens(amount);
        }
    }

    function swapTokensForBNB(uint256 tokenAmount) private {
        // generate the uniswap pair path of token -> weth
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = pcsV2Router.WETH();

        _approve(address(this), address(pcsV2Router), tokenAmount);

        // make the swap
        pcsV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0, // accept any amount of ETH
            path,
            address(this),
            block.timestamp
        );
    }

    function swapBNBForTokens(uint256 amount) private {
        // generate the uniswap pair path of token -> weth
        address[] memory path = new address[](2);
        path[0] = pcsV2Router.WETH();
        path[1] = address(this);

        // make the swap
        pcsV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens{
            value: amount
        }(
            0, // accept any amount of Tokens
            path,
            dead, // Burn address
            block.timestamp.add(300)
        );
    }

    function swapTokensForRewardToken(uint256 tokenAmount) private {
        address[] memory path = new address[](3);
        path[0] = address(this);
        path[1] = pcsV2Router.WETH();
        path[2] = rewardToken;

        _approve(address(this), address(pcsV2Router), tokenAmount);

        // make the swap
        pcsV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp.add(300)
        );
    }

    function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
        // approve token transfer to cover all possible scenarios
        _approve(address(this), address(pcsV2Router), tokenAmount);

        // add the liquidity
        pcsV2Router.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            dead,
            block.timestamp
        );
    }

    //this method is responsible for taking all fee, if takeFee is true
    function _tokenTransfer(
        address sender,
        address recipient,
        uint256 amount,
        bool takeFee
    ) private {
        if (!takeFee) removeAllFee();

        if (_isExcluded[sender] && !_isExcluded[recipient]) {
            _transferFromExcluded(sender, recipient, amount);
        } else if (!_isExcluded[sender] && _isExcluded[recipient]) {
            _transferToExcluded(sender, recipient, amount);
        } else if (!_isExcluded[sender] && !_isExcluded[recipient]) {
            _transferStandard(sender, recipient, amount);
        } else if (_isExcluded[sender] && _isExcluded[recipient]) {
            _transferBothExcluded(sender, recipient, amount);
        } else {
            _transferStandard(sender, recipient, amount);
        }

        if (!takeFee) restoreAllFee();
    }

    function _transferStandard(
        address sender,
        address recipient,
        uint256 tAmount
    ) private {
        (
            uint256 rAmount,
            uint256 rTransferAmount,
            uint256 rFee,
            uint256 tTransferAmount,
            uint256 tFee,
            uint256 tLiquidity
        ) = _getValues(tAmount);
        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
        _takeLiquidity(tLiquidity);
        _reflectFee(rFee, tFee);
        emit Transfer(sender, recipient, tTransferAmount);
    }

    function _transferToExcluded(
        address sender,
        address recipient,
        uint256 tAmount
    ) private {
        (
            uint256 rAmount,
            uint256 rTransferAmount,
            uint256 rFee,
            uint256 tTransferAmount,
            uint256 tFee,
            uint256 tLiquidity
        ) = _getValues(tAmount);
        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
        _takeLiquidity(tLiquidity);
        _reflectFee(rFee, tFee);
        emit Transfer(sender, recipient, tTransferAmount);
    }

    function _transferFromExcluded(
        address sender,
        address recipient,
        uint256 tAmount
    ) private {
        (
            uint256 rAmount,
            uint256 rTransferAmount,
            uint256 rFee,
            uint256 tTransferAmount,
            uint256 tFee,
            uint256 tLiquidity
        ) = _getValues(tAmount);
        _tOwned[sender] = _tOwned[sender].sub(tAmount);
        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
        _takeLiquidity(tLiquidity);
        _reflectFee(rFee, tFee);
        emit Transfer(sender, recipient, tTransferAmount);
    }

    function _transferBothExcluded(
        address sender,
        address recipient,
        uint256 tAmount
    ) private {
        (
            uint256 rAmount,
            uint256 rTransferAmount,
            uint256 rFee,
            uint256 tTransferAmount,
            uint256 tFee,
            uint256 tLiquidity
        ) = _getValues(tAmount);
        _tOwned[sender] = _tOwned[sender].sub(tAmount);
        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
        _takeLiquidity(tLiquidity);
        _reflectFee(rFee, tFee);
        emit Transfer(sender, recipient, tTransferAmount);
    }

    function _tokenTransferNoFee(
        address sender,
        address recipient,
        uint256 amount
    ) private {
        uint256 currentRate = _getRate();
        uint256 rAmount = amount.mul(currentRate);

        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rAmount);

        if (_isExcluded[sender]) {
            _tOwned[sender] = _tOwned[sender].sub(amount);
        }
        if (_isExcluded[recipient]) {
            _tOwned[recipient] = _tOwned[recipient].add(amount);
        }
        emit Transfer(sender, recipient, amount);
    }

    function transferEth(address recipient, uint256 amount) private {
        (bool res, ) = recipient.call{value: amount}("");
        require(res, "ETH TRANSFER FAILED");
    }

    function recoverBEP20(address tokenAddress, uint256 tokenAmount)
        public
        onlyOwner
    {
        // do not allow recovering self token
        require(tokenAddress != address(this), "Self withdraw");
        require(tokenAddress != rewardToken, "reward withdraw");
        IERC20(tokenAddress).transfer(owner(), tokenAmount);
    }

    /* Dividend management functions*/
    function distributeDividends(uint256 amount) internal {
        require(_tDividendTotal > 0);

        if (amount > 0) {
            magnifiedDividendPerShare = magnifiedDividendPerShare.add(
                (amount).mul(magnitude) / _tDividendTotal
            );
            emit DividendsDistributed(amount);

            totalDividendsDistributed = totalDividendsDistributed.add(amount);
        }
    }

    function withdrawDividend() public virtual {
        _withdrawDividendOfUser(payable(msg.sender));
    }

    function _withdrawDividendOfUser(address payable user)
        internal
        returns (uint256)
    {
        uint256 _withdrawableDividend = withdrawableDividendOf(user);
        if (_withdrawableDividend > 0) {
            //check if contract has balance to pay out rewards
            uint256 curBalance = IERC20(rewardToken).balanceOf(address(this));
            if (curBalance < _withdrawableDividend) {
                return 0;
            }

            withdrawnDividends[user] = withdrawnDividends[user].add(
                _withdrawableDividend
            );
            emit DividendWithdrawn(user, _withdrawableDividend);
            bool success = IERC20(rewardToken).transfer(
                user,
                _withdrawableDividend
            );

            if (!success) {
                withdrawnDividends[user] = withdrawnDividends[user].sub(
                    _withdrawableDividend
                );
                return 0;
            }

            return _withdrawableDividend;
        }
        return 0;
    }

    function dividendOf(address _owner) public view returns (uint256) {
        return withdrawableDividendOf(_owner);
    }

    function withdrawableDividendOf(address _owner)
        public
        view
        returns (uint256)
    {
        return accumulativeDividendOf(_owner).sub(withdrawnDividends[_owner]);
    }

    function withdrawnDividendOf(address _owner) public view returns (uint256) {
        return withdrawnDividends[_owner];
    }

    function accumulativeDividendOf(address _owner)
        public
        view
        returns (uint256)
    {
        return
            magnifiedDividendPerShare
                .mul(balanceOf(_owner))
                .toInt256Safe()
                .add(magnifiedDividendCorrections[_owner])
                .toUint256Safe() / magnitude;
    }

    function _dtransfer(
        address from,
        address to,
        uint256 value
    ) internal virtual {
        require(false);

        int256 _magCorrection = magnifiedDividendPerShare
            .mul(value)
            .toInt256Safe();
        magnifiedDividendCorrections[from] = magnifiedDividendCorrections[from]
            .add(_magCorrection);
        magnifiedDividendCorrections[to] = magnifiedDividendCorrections[to].sub(
            _magCorrection
        );
    }

    function _dmint(address account, uint256 value) internal {
        _tDividendTotal = _tDividendTotal + value;
        magnifiedDividendCorrections[account] = magnifiedDividendCorrections[
            account
        ].sub((magnifiedDividendPerShare.mul(value)).toInt256Safe());
    }

    function _dburn(address account, uint256 value) internal {
        _tDividendTotal = _tDividendTotal - value;
        magnifiedDividendCorrections[account] = magnifiedDividendCorrections[
            account
        ].add((magnifiedDividendPerShare.mul(value)).toInt256Safe());
    }

    function _setBalance(
        address account,
        uint256 newBalance,
        uint256 currentBalance
    ) internal {
        if (newBalance > currentBalance) {
            uint256 mintAmount = newBalance.sub(currentBalance);
            _dmint(account, mintAmount);
        } else if (newBalance < currentBalance) {
            uint256 burnAmount = currentBalance.sub(newBalance);
            _dburn(account, burnAmount);
        }
    }

    function excludeFromDividends(address account) public onlyOwner {
        require(!excludedFromDividends[account]);
        excludedFromDividends[account] = true;

        uint256 currentBalance = balanceOf(account);
        if (currentBalance < minimumTokenBalanceForDividends) {
            //if existing balance was less than min, the entry is not there
            currentBalance = 0;
        }
        _setBalance(account, 0, currentBalance);
        tokenHoldersMap.remove(account);

        emit ExcludeFromDividends(account);
    }

    function updateClaimWait(uint256 newClaimWait) external onlyOwner {
        require(
            newClaimWait >= 3600 && newClaimWait <= 86400,
            "Dividend_Tracker: claimWait must be updated to between 1 and 24 hours"
        );
        require(
            newClaimWait != claimWait,
            "Dividend_Tracker: Cannot update claimWait to same value"
        );
        emit ClaimWaitUpdated(newClaimWait, claimWait);
        claimWait = newClaimWait;
    }

    function getLastProcessedIndex() external view returns (uint256) {
        return lastProcessedIndex;
    }

    function getNumberOfDividendTokenHolders() external view returns (uint256) {
        return tokenHoldersMap.keys.length;
    }

    function getAccountDividendsInfo(address _account)
        public
        view
        returns (
            address account,
            int256 index,
            int256 iterationsUntilProcessed,
            uint256 withdrawableDividends,
            uint256 totalDividends,
            uint256 lastClaimTime,
            uint256 nextClaimTime,
            uint256 secondsUntilAutoClaimAvailable
        )
    {
        account = _account;

        index = tokenHoldersMap.getIndexOfKey(account);

        iterationsUntilProcessed = -1;

        if (index >= 0) {
            if (uint256(index) > lastProcessedIndex) {
                iterationsUntilProcessed = index.sub(
                    int256(lastProcessedIndex)
                );
            } else {
                uint256 processesUntilEndOfArray = tokenHoldersMap.keys.length >
                    lastProcessedIndex
                    ? tokenHoldersMap.keys.length.sub(lastProcessedIndex)
                    : 0;

                iterationsUntilProcessed = index.add(
                    int256(processesUntilEndOfArray)
                );
            }
        }

        withdrawableDividends = withdrawableDividendOf(account);
        totalDividends = accumulativeDividendOf(account);

        lastClaimTime = lastClaimTimes[account];

        nextClaimTime = lastClaimTime > 0 ? lastClaimTime.add(claimWait) : 0;

        secondsUntilAutoClaimAvailable = nextClaimTime > block.timestamp
            ? nextClaimTime.sub(block.timestamp)
            : 0;
    }

    function getAccountDividendsInfoAtIndex(uint256 index)
        public
        view
        returns (
            address,
            int256,
            int256,
            uint256,
            uint256,
            uint256,
            uint256,
            uint256
        )
    {
        if (index >= tokenHoldersMap.size()) {
            return (address(0), -1, -1, 0, 0, 0, 0, 0);
        }

        address account = tokenHoldersMap.getKeyAtIndex(index);

        return getAccountDividendsInfo(account);
    }

    function canAutoClaim(uint256 lastClaimTime) private view returns (bool) {
        if (lastClaimTime > block.timestamp) {
            return false;
        }

        return block.timestamp.sub(lastClaimTime) >= claimWait;
    }

    function setBalance(
        address payable account,
        uint256 newBalance,
        uint256 currentBalance
    ) private {
        if (excludedFromDividends[account]) {
            return;
        }
        if (currentBalance < minimumTokenBalanceForDividends) {
            //if existing balance was less than min, the entry is not there
            currentBalance = 0;
        }
        if (newBalance >= minimumTokenBalanceForDividends) {
            _setBalance(account, newBalance, currentBalance);
            tokenHoldersMap.set(account, newBalance);
        } else {
            _setBalance(account, 0, currentBalance);
            tokenHoldersMap.remove(account);
        }
        processAccount(account, true);
    }

    function process(uint256 gas)
        public
        returns (
            uint256,
            uint256,
            uint256
        )
    {
        uint256 numberOfTokenHolders = tokenHoldersMap.keys.length;

        if (numberOfTokenHolders == 0) {
            return (0, 0, lastProcessedIndex);
        }

        uint256 _lastProcessedIndex = lastProcessedIndex;

        uint256 gasUsed = 0;

        uint256 gasLeft = gasleft();

        uint256 iterations = 0;
        uint256 claims = 0;

        while (gasUsed < gas && iterations < numberOfTokenHolders) {
            _lastProcessedIndex++;

            if (_lastProcessedIndex >= tokenHoldersMap.keys.length) {
                _lastProcessedIndex = 0;
            }

            address account = tokenHoldersMap.keys[_lastProcessedIndex];

            if (canAutoClaim(lastClaimTimes[account])) {
                if (processAccount(payable(account), true)) {
                    claims++;
                }
            }
            iterations++;
            uint256 newGasLeft = gasleft();
            if (gasLeft > newGasLeft) {
                gasUsed = gasUsed.add(gasLeft.sub(newGasLeft));
            }
            gasLeft = newGasLeft;
        }

        lastProcessedIndex = _lastProcessedIndex;
        return (iterations, claims, lastProcessedIndex);
    }

    function processAccount(address payable account, bool automatic)
        internal
        returns (bool)
    {
        if (!tokenHoldersMap.inserted[account]) {
            return false;
        }

        uint256 amount = _withdrawDividendOfUser(account);

        if (amount > 0) {
            lastClaimTimes[account] = block.timestamp;
            emit Claim(account, amount, automatic);
            return true;
        }

        return false;
    }

    function updateGasForProcessing(uint256 newValue) public onlyOwner {
        require(
            newValue >= 200000 && newValue <= 5000000,
            "gasForProcessing must be between 200,000 and 5,000,000"
        );
        gasForProcessing = newValue;
    }

    function processDividendTracker(uint256 gas) external {
        (
            uint256 iterations,
            uint256 claims,
            uint256 _lastProcessedIndex
        ) = process(gas);
        emit ProcessedDividendTracker(
            iterations,
            claims,
            _lastProcessedIndex,
            false,
            gas,
            tx.origin
        );
    }

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

    function claim() external {
        processAccount(payable(msg.sender), false);
    }
}