// File: contracts/XAEA12Staking.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
pragma experimental ABIEncoderV2;

import "./external/Address.sol";
import "./external/Ownable.sol";
import "./external/IERC20.sol";
import "./external/SafeMath.sol";
import "./external/SafeERC20.sol";
import "./external/Uniswap.sol";
import "./external/ReentrancyGuard.sol";
import "./XAEA12.sol";

contract Reserve is Ownable {
    function safeTransfer(IERC20 rewardToken, address _to, uint256 _amount) external onlyOwner {
        uint256 tokenBal = rewardToken.balanceOf(address(this));
        if (_amount > tokenBal) {
            rewardToken.transfer(_to, tokenBal);
        } else {
            rewardToken.transfer(_to, _amount);
        }
    }
}

contract XAEA12Staking is Ownable {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    struct WithdrawFeeInterval {
        uint256 day;
        uint256 fee;
    }

    struct UserInfo {
        uint256 amount;
        uint256 rewardDebt;
        uint256 rewardLockedUp;
        uint256 nextHarvestUntil;
        uint256 depositTimestamp;
    }

    struct PoolInfo {
        IERC20 stakedToken;
        IERC20 rewardToken;
        uint256 stakedAmount;
        uint256 rewardSupply;
        uint256 tokenPerBlock;
        uint256 lastRewardBlock;
        uint256 accTokenPerShare;
        uint16 depositFeeBP;
        uint256 minDeposit;
        uint256 harvestInterval;
        bool lockDeposit;
    }

    Reserve public rewardReserve;
    uint256 public constant BONUS_MULTIPLIER = 1;
    uint256 public constant MAXIMUM_HARVEST_INTERVAL = 14 days;

    mapping(address => mapping(address => bool)) internal poolExists;
    mapping(uint256 => uint256) public rewardDistributions;

    PoolInfo[] public poolInfo;
    mapping(uint256 => mapping(address => UserInfo)) public userInfo;
    mapping(uint256 => WithdrawFeeInterval[]) public withdrawFee;
    uint256 public startBlock;
    bool public paused = true;
    bool public initialized = false;

    event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
    event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event RewardLockedUp(address indexed user, uint256 indexed pid, uint256 amountLockedUp);
    event PoolUpdated(uint256 tokenPerBlock, uint256 depositFee, uint256 minDeposit, uint256 harvestInterval);
    event RewardTokenDeposited(address depositer, uint256 pid, uint256 amount);
    event AdminEmergencyWithdraw(uint256 pid, uint256 currentRewardBalance, uint256 accTokenPerShare, uint256 tokenPerBlock, uint256 lastRewardBlock);
    event PoolPausedUpdated(bool paused);
    event DepositLocked(uint256 pid, bool depositLocked);

    constructor(
        address _owner,
        IERC20 token
    ) public {
        require(_owner != address(0), "XAEA12_STAKING: Invalid Owner address");
        require(address(token) != address(0), "XAEA12_STAKING: Invalid token address");

        startBlock = 0;
        rewardReserve = new Reserve();
        transferOwnership(_owner);
        WithdrawFeeInterval[] memory _withdrawFee = new WithdrawFeeInterval[](5);
        _withdrawFee[0] = WithdrawFeeInterval(3 days, 25);
        _withdrawFee[1] = WithdrawFeeInterval(10 days, 15);
        _withdrawFee[2] = WithdrawFeeInterval(30 days, 5);
        _withdrawFee[3] = WithdrawFeeInterval(90 days, 0);
        add(200000e9, token, token, 0, 0, 0, _withdrawFee);
    }

    function initialize() external onlyOwner {
        require(!initialized, "XAEA12_STAKING: Staking already started!");
        initialized = true;
        paused = false;
        startBlock = block.number;
        uint256 length = poolInfo.length;
        for (uint256 pid = 0; pid < length; ++pid) {
            poolInfo[pid].lastRewardBlock = startBlock;
        }
    }

    function getWithdrawFeeIntervals(uint256 poolId) external view returns (WithdrawFeeInterval[] memory) {
        return withdrawFee[poolId];
    }

    function poolLength() external view returns (uint256) {
        return poolInfo.length;
    }

    function add(
        uint256 _tokenPerBlock,
        IERC20 _stakedToken,
        IERC20 _rewardToken,
        uint16 _depositFeeBP,
        uint256 _minDeposit,
        uint256 _harvestInterval,
        WithdrawFeeInterval[] memory withdrawFeeIntervals
    ) public onlyOwner {
        require(address(_stakedToken) != address(0), "XAEA12_STAKING: Invalid Staked token address");
        require(address(_rewardToken) != address(0), "XAEA12_STAKING: Invalid Reward token address");
        require(poolInfo.length <= 1000, "XAEA12_STAKING: Pool Length Full!");
        require(!poolExists[address(_stakedToken)][address(_rewardToken)], "XAEA12_STAKING: Pool Already Exists!");
        require(_depositFeeBP <= 10000, "XAEA12_STAKING: invalid deposit fee basis points");
        require(_harvestInterval <= MAXIMUM_HARVEST_INTERVAL, "XAEA12_STAKING: invalid harvest interval");

        uint256 lastRewardBlock = block.number > startBlock ? block.number : startBlock;
        poolInfo.push(
            PoolInfo({
                stakedToken: _stakedToken,
                rewardToken: _rewardToken,
                stakedAmount: 0,
                rewardSupply: 0,
                tokenPerBlock: _tokenPerBlock,
                lastRewardBlock: lastRewardBlock,
                accTokenPerShare: 0,
                depositFeeBP: _depositFeeBP,
                minDeposit: _minDeposit,
                harvestInterval: _harvestInterval,
                lockDeposit: false
            })
        );
        uint256 length = withdrawFeeIntervals.length;
        for (uint256 i = 0; i < length; i++) {
            withdrawFee[poolInfo.length - 1].push(withdrawFeeIntervals[i]);
        }
        poolExists[address(_stakedToken)][address(_rewardToken)] = true;
    }

    function set(
        uint256 _pid,
        uint256 _tokenPerBlock,
        uint16 _depositFeeBP,
        uint256 _minDeposit,
        uint256 _harvestInterval
    ) external onlyOwner {
        require(_depositFeeBP <= 10000, "XAEA12_STAKING: invalid deposit fee basis points");
        require(_harvestInterval <= MAXIMUM_HARVEST_INTERVAL, "XAEA12_STAKING: invalid harvest interval");

        poolInfo[_pid].tokenPerBlock = _tokenPerBlock;
        poolInfo[_pid].depositFeeBP = _depositFeeBP;
        poolInfo[_pid].minDeposit = _minDeposit;
        poolInfo[_pid].harvestInterval = _harvestInterval;

        emit PoolUpdated(_tokenPerBlock, _depositFeeBP, _minDeposit, _harvestInterval);
    }

    function getMultiplier(uint256 _from, uint256 _to) public pure returns (uint256) {
        return _to.sub(_from).mul(BONUS_MULTIPLIER);
    }

    function pendingToken(uint256 _pid, address _user) external view returns (uint256) {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][_user];
        uint256 accTokenPerShare = pool.accTokenPerShare;
        if (
            block.number > pool.lastRewardBlock &&
            pool.stakedAmount != 0 &&
            pool.rewardToken.balanceOf(address(this)) > 0
        ) {
            uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
            uint256 tokenReward = multiplier.mul(pool.tokenPerBlock);
            accTokenPerShare = accTokenPerShare.add(tokenReward.mul(1e12).div(pool.stakedAmount));
        }
        return user.amount.mul(accTokenPerShare).div(1e12).sub(user.rewardDebt);
    }

    function canHarvest(uint256 _pid, address _user) public view returns (bool) {
        UserInfo storage user = userInfo[_pid][_user];
        return user.amount != 0 && block.timestamp >= user.nextHarvestUntil;
    }

    function updatePool(uint256 _pid) public {
        PoolInfo storage pool = poolInfo[_pid];
        if (block.number <= pool.lastRewardBlock) {
            return;
        }
        uint256 tokenBalance = pool.stakedAmount;
        if (tokenBalance == 0 || pool.tokenPerBlock == 0) {
            pool.lastRewardBlock = block.number;
            return;
        }

        uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
        uint256 tokenReward = multiplier.mul(pool.tokenPerBlock);
        uint256 rewardTokenSupply = pool.rewardSupply;
        uint256 reward = tokenReward > rewardTokenSupply ? rewardTokenSupply : tokenReward;
        if (reward > 0) {
            pool.rewardSupply -= reward;
            pool.accTokenPerShare = pool.accTokenPerShare.add(reward.mul(1e12).div(tokenBalance));
        }
        pool.lastRewardBlock = block.number;
    }

    function depositRewardToken(uint256 poolId, uint256 amount) external {
        PoolInfo storage _poolInfo = poolInfo[poolId];
        uint256 initialBalance = _poolInfo.rewardToken.balanceOf(address(rewardReserve));
        _poolInfo.rewardToken.safeTransferFrom(msg.sender, address(rewardReserve), amount);
        uint256 finalBalance = _poolInfo.rewardToken.balanceOf(address(rewardReserve));
        _poolInfo.rewardSupply += finalBalance.sub(initialBalance);

        emit RewardTokenDeposited(msg.sender, poolId, amount);
    }

    function deposit(uint256 _pid, uint256 _amount) external {
        require(!paused, "XAEA12_STAKING: Paused!");
        PoolInfo storage pool = poolInfo[_pid];
        require(!pool.lockDeposit, "XAEA12_STAKING: Deposit Locked!");
        UserInfo storage user = userInfo[_pid][msg.sender];
        updatePool(_pid);
        payOrLockupPendingToken(_pid);
        if (_amount > 0) {
            require(_amount >= poolInfo[_pid].minDeposit, "XAEA12_STAKING: Not Enough Required Staking Tokens!");
            user.depositTimestamp = block.timestamp;
            uint256 initialBalance = pool.stakedToken.balanceOf(address(this));
            pool.stakedToken.safeTransferFrom(address(msg.sender), address(this), _amount);
            uint256 finalBalance = pool.stakedToken.balanceOf(address(this));
            uint256 delta = finalBalance.sub(initialBalance);
            if (pool.depositFeeBP > 0) {
                uint256 depositFee = _amount.mul(pool.depositFeeBP).div(10000);
                pool.stakedToken.safeTransfer(owner(), depositFee);
                user.amount = user.amount.add(delta).sub(depositFee);
                pool.stakedAmount = pool.stakedAmount.add(delta).sub(depositFee);
            } else {
                user.amount = user.amount.add(delta);
                pool.stakedAmount = pool.stakedAmount.add(delta);
            }
        }
        user.rewardDebt = user.amount.mul(pool.accTokenPerShare).div(1e12);
        emit Deposit(msg.sender, _pid, _amount);
    }

    function withdraw(uint256 _pid, uint256 _amount) external {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        require(user.amount >= _amount, "XAEA12_STAKING: withdraw not good");
        updatePool(_pid);
        payOrLockupPendingToken(_pid);
        uint256 amountToTransfer = _amount;
        if (_amount > 0) {
            user.amount = user.amount.sub(_amount);
            uint256 _withdrawFee = getWithdrawFee(_pid, user.depositTimestamp);
            uint256 feeAmount = _amount.mul(_withdrawFee).div(1000);
            amountToTransfer = _amount.sub(feeAmount);
            pool.stakedAmount = pool.stakedAmount.sub(_amount);
            pool.stakedToken.safeTransfer(owner(), feeAmount);
            pool.stakedToken.safeTransfer(address(msg.sender), amountToTransfer);
        }
        user.rewardDebt = user.amount.mul(pool.accTokenPerShare).div(1e12);
        emit Withdraw(msg.sender, _pid, amountToTransfer);
    }

    function payOrLockupPendingToken(uint256 _pid) internal {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];

        if (user.nextHarvestUntil == 0) {
            user.nextHarvestUntil = block.timestamp.add(pool.harvestInterval);
        }

        uint256 pending = user.amount.mul(pool.accTokenPerShare).div(1e12).sub(user.rewardDebt);
        if (canHarvest(_pid, msg.sender)) {
            if (pending > 0 || user.rewardLockedUp > 0) {
                uint256 totalRewards = pending.add(user.rewardLockedUp);

                user.rewardLockedUp = 0;
                user.nextHarvestUntil = block.timestamp.add(pool.harvestInterval);

                rewardReserve.safeTransfer(pool.rewardToken, msg.sender, totalRewards);
                rewardDistributions[_pid] = rewardDistributions[_pid].add(totalRewards);
            }
        } else if (pending > 0) {
            user.rewardLockedUp = user.rewardLockedUp.add(pending);
            emit RewardLockedUp(msg.sender, _pid, pending);
        }
    }

    function getWithdrawFee(uint256 poolId, uint256 stakedTime) public view returns (uint256) {
        uint256 depositTime = block.timestamp.sub(stakedTime);
        WithdrawFeeInterval[] storage _withdrawFee = withdrawFee[poolId];
        uint256 length = _withdrawFee.length;
        for (uint256 i = 0; i < length; i++) {
            if (depositTime <= _withdrawFee[i].day) return _withdrawFee[i].fee;
        }
        return 0;
    }

    function emergencyWithdraw(uint256 _pid) external {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        uint256 amount = user.amount;
        require(amount != 0, "XAEA12_STAKING: Not enought staked tokens!");
        pool.stakedToken.safeTransfer(address(msg.sender), amount);
        emit EmergencyWithdraw(msg.sender, _pid, amount);
        delete userInfo[_pid][msg.sender];
    }

    function emergencyAdminWithdraw(uint256 _pid) external onlyOwner {
        PoolInfo storage pool = poolInfo[_pid];
        uint256 balanceToWithdraw = pool.rewardToken.balanceOf(address(this));
        require(balanceToWithdraw != 0, "XAEA12_STAKING: Not enough balance to withdraw!");
        pool.rewardToken.transfer(owner(), balanceToWithdraw);
        rewardReserve.safeTransfer(pool.rewardToken, owner(), pool.rewardToken.balanceOf(address(rewardReserve)));
        emit AdminEmergencyWithdraw(_pid, pool.rewardToken.balanceOf(address(this)), pool.accTokenPerShare, pool.tokenPerBlock, pool.lastRewardBlock);
        delete poolInfo[_pid];
    }

    function updatePaused(bool _value) external onlyOwner {
        paused = _value;
        emit PoolPausedUpdated(_value);
    }

    function setLockDeposit(uint256 pid, bool locked) external onlyOwner {
        poolInfo[pid].lockDeposit = locked;
        emit DepositLocked(pid, locked);
    }
}
// File: contracts/external/Address.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

/**
 * @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);
            }
        }
    }
}

// File: contracts/external/Ownable.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
import "./Context.sol";

/**
 * @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.
 */
contract Ownable is Context {
    address private _owner;

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

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

// File: contracts/external/IERC20.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
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
    );
}

// File: contracts/external/SafeMath.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

/**
 * @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;
    }
}

// File: contracts/external/SafeERC20.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

import "./IERC20.sol";
import "./SafeMath.sol";
import "./Address.sol";

/**
 * @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");
        }
    }
}
// File: contracts/external/Uniswap.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

interface IUniswapV2Factory {
    function createPair(address tokenA, address tokenB)
        external
        returns (address pair);
}

interface IUniswapV2Pair {
    function sync() external;
}

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
        );
}

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

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

    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;
}

// File: contracts/external/ReentrancyGuard.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

abstract contract ReentrancyGuard {
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() public {
        _status = _NOT_ENTERED;
    }

    modifier nonReentrant() {
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
        _status = _ENTERED;
        _;
        _status = _NOT_ENTERED;
    }

    modifier isHuman() {
        require(tx.origin == msg.sender, "sorry humans only");
        _;
    }
}

// File: contracts/XAEA12.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

import "./external/Address.sol";
import "./external/Ownable.sol";
import "./external/IERC20.sol";
import "./external/SafeMath.sol";
import "./external/Uniswap.sol";
import "./external/ReentrancyGuard.sol";

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

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

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

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

contract XAEA12 is Context, IERC20, Ownable, ReentrancyGuard {
    using SafeMath for uint256;
    using Address for address;
    using TransferHelper for address;

    string private _name = "X AE A-12";
    string private _symbol = "XAEA12";
    uint8 private _decimals = 9;

    mapping(address => uint256) internal _reflectionBalance;
    mapping(address => uint256) internal _tokenBalance;
    mapping(address => mapping(address => uint256)) internal _allowances;

    uint256 private constant MAX = ~uint256(0);
    uint256 internal _tokenTotal = 1000_000_000_000e9;
    uint256 internal _reflectionTotal = (MAX - (MAX % _tokenTotal));

    mapping(address => bool) public isTaxless;
    mapping(address => bool) internal _isExcluded;
    address[] internal _excluded;

    uint256 public _feeDecimal = 2;
    // index 0 = buy fee, index 1 = sell fee, index 2 = p2p fee
    uint256[] public _taxFee;
    uint256[] public _teamFee;
    uint256[] public _marketingFee;

    uint256 internal _feeTotal;
    uint256 internal _marketingFeeCollected;
    uint256 internal _teamFeeCollected;

    bool public isFeeActive = false; // should be true
    bool private inSwap;
    bool public swapEnabled = true;
    bool public isLaunchProtectionMode = true;
    mapping(address => bool) public launchProtectionWhitelist;

    uint256 public maxTxAmount = _tokenTotal.mul(5).div(1000); // 0.5%
    
    uint256 public minTokensBeforeSwap = 5_000_000_000e9;

    address public marketingWallet;
    address public teamWallet;

    IUniswapV2Router02 public router;
    address public pair;

    event SwapUpdated(bool enabled);
    event Swap(uint256 swaped, uint256 recieved);

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

    constructor(
        address _router,
        address _owner,
        address _marketingWallet,
        address _teamWallet
    ) public {
        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(_router);
        pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(
            address(this),
            _uniswapV2Router.WETH()
        );
        router = _uniswapV2Router;
        marketingWallet = _marketingWallet;
        teamWallet = _teamWallet;

        isTaxless[_owner] = true;
        isTaxless[teamWallet] = true;
        isTaxless[marketingWallet] = true;
        isTaxless[address(this)] = true;

        excludeAccount(address(pair));
        excludeAccount(address(this));
        excludeAccount(address(marketingWallet));
        excludeAccount(address(teamWallet));
        excludeAccount(address(address(0)));
        excludeAccount(
            address(address(0x000000000000000000000000000000000000dEaD))
        );

        _reflectionBalance[_owner] = _reflectionTotal;
        emit Transfer(address(0), _owner, _tokenTotal);

        _taxFee.push(200);
        _taxFee.push(200);
        _taxFee.push(200);

        _teamFee.push(200);
        _teamFee.push(200);
        _teamFee.push(200);

        _marketingFee.push(200);
        _marketingFee.push(200);
        _marketingFee.push(200);

        transferOwnership(_owner);
    }

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

    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 _tokenTotal;
    }

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

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

    function allowance(address owner, address spender)
        public
        view
        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 virtual 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 isExcluded(address account) public view returns (bool) {
        return _isExcluded[account];
    }

    function reflectionFromToken(uint256 tokenAmount)
        public
        view
        returns (uint256)
    {
        require(tokenAmount <= _tokenTotal, "Amount must be less than supply");
        return tokenAmount.mul(_getReflectionRate());
    }

    function tokenFromReflection(uint256 reflectionAmount)
        public
        view
        returns (uint256)
    {
        require(
            reflectionAmount <= _reflectionTotal,
            "Amount must be less than total reflections"
        );
        uint256 currentRate = _getReflectionRate();
        return reflectionAmount.div(currentRate);
    }

    function excludeAccount(address account) public onlyOwner {
        require(
            account != address(router),
            "ERC20: We can not exclude Uniswap router."
        );
        require(!_isExcluded[account], "ERC20: Account is already excluded");
        if (_reflectionBalance[account] > 0) {
            _tokenBalance[account] = tokenFromReflection(
                _reflectionBalance[account]
            );
        }
        _isExcluded[account] = true;
        _excluded.push(account);
    }

    function includeAccount(address account) external onlyOwner {
        require(_isExcluded[account], "ERC20: Account is already included");
        for (uint256 i = 0; i < _excluded.length; i++) {
            if (_excluded[i] == account) {
                _excluded[i] = _excluded[_excluded.length - 1];
                _tokenBalance[account] = 0;
                _isExcluded[account] = false;
                _excluded.pop();
                break;
            }
        }
    }

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

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

    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) private {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");

        require(
            isTaxless[sender] || isTaxless[recipient] || amount <= maxTxAmount,
            "Max Transfer Limit Exceeds!"
        );

        if (isLaunchProtectionMode) {
            require(launchProtectionWhitelist[tx.origin] == true, "Not whitelisted");
        }

        if (swapEnabled && !inSwap && sender != pair) {
            swap();
        }

        uint256 transferAmount = amount;
        uint256 rate = _getReflectionRate();

        if (
            isFeeActive &&
            !isTaxless[sender] &&
            !isTaxless[recipient] &&
            !inSwap
        ) {
            transferAmount = collectFee(
                sender,
                amount,
                rate,
                recipient == pair,
                sender != pair && recipient != pair
            );
        }
        //transfer reflection
        _reflectionBalance[sender] = _reflectionBalance[sender].sub(
            amount.mul(rate)
        );
        _reflectionBalance[recipient] = _reflectionBalance[recipient].add(
            transferAmount.mul(rate)
        );

        //if any account belongs to the excludedAccount transfer token
        if (_isExcluded[sender]) {
            _tokenBalance[sender] = _tokenBalance[sender].sub(amount);
        }
        if (_isExcluded[recipient]) {
            _tokenBalance[recipient] = _tokenBalance[recipient].add(
                transferAmount
            );
        }

        emit Transfer(sender, recipient, transferAmount);
    }

    function calculateFee(uint256 feeIndex, uint256 amount)
        internal
        returns (uint256, uint256)
    {
        uint256 taxFee = amount.mul(_taxFee[feeIndex]).div(
            10**(_feeDecimal + 2)
        );
        uint256 marketingFee = amount.mul(_marketingFee[feeIndex]).div(
            10**(_feeDecimal + 2)
        );
        uint256 teamFee = amount.mul(_teamFee[feeIndex]).div(
            10**(_feeDecimal + 2)
        );

        _marketingFeeCollected = _marketingFeeCollected.add(marketingFee);
        _teamFeeCollected = _teamFeeCollected.add(teamFee);
        return (taxFee, marketingFee.add(teamFee));
    }

    function collectFee(
        address account,
        uint256 amount,
        uint256 rate,
        bool sell,
        bool p2p
    ) private returns (uint256) {
        uint256 transferAmount = amount;

        (uint256 taxFee, uint256 otherFee) = calculateFee(
            p2p ? 2 : sell ? 1 : 0,
            amount
        );
        if (otherFee != 0) {
            transferAmount = transferAmount.sub(otherFee);
            _reflectionBalance[address(this)] = _reflectionBalance[
                address(this)
            ].add(otherFee.mul(rate));
            if (_isExcluded[address(this)]) {
                _tokenBalance[address(this)] = _tokenBalance[address(this)].add(
                    otherFee
                );
            }
            emit Transfer(account, address(this), otherFee);
        }
        if (taxFee != 0) {
            _reflectionTotal = _reflectionTotal.sub(taxFee.mul(rate));
        }
        _feeTotal = _feeTotal.add(taxFee).add(otherFee);
        return transferAmount;
    }

    function swap() private lockTheSwap {
        uint256 totalFee = _teamFeeCollected.add(_marketingFeeCollected);

        if (minTokensBeforeSwap > totalFee) return;

        address[] memory sellPath = new address[](2);
        sellPath[0] = address(this);
        sellPath[1] = router.WETH();

        uint256 balanceBefore = address(this).balance;

        _approve(address(this), address(router), totalFee);
        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            totalFee,
            0,
            sellPath,
            address(this),
            block.timestamp
        );

        uint256 amountFee = address(this).balance.sub(balanceBefore);

        uint256 amountMarketing = amountFee.mul(_marketingFeeCollected).div(
            totalFee
        );
        if (amountMarketing > 0)
            payable(marketingWallet).transfer(amountMarketing);

        uint256 amountTeam = address(this).balance;
        if (amountTeam > 0)
            payable(marketingWallet).transfer(address(this).balance);

        _marketingFeeCollected = 0;
        _teamFeeCollected = 0;

        emit Swap(totalFee, amountFee);
    }

    function _getReflectionRate() private view returns (uint256) {
        uint256 reflectionSupply = _reflectionTotal;
        uint256 tokenSupply = _tokenTotal;
        for (uint256 i = 0; i < _excluded.length; i++) {
            if (
                _reflectionBalance[_excluded[i]] > reflectionSupply ||
                _tokenBalance[_excluded[i]] > tokenSupply
            ) return _reflectionTotal.div(_tokenTotal);
            reflectionSupply = reflectionSupply.sub(
                _reflectionBalance[_excluded[i]]
            );
            tokenSupply = tokenSupply.sub(_tokenBalance[_excluded[i]]);
        }
        if (reflectionSupply < _reflectionTotal.div(_tokenTotal))
            return _reflectionTotal.div(_tokenTotal);
        return reflectionSupply.div(tokenSupply);
    }

    function setPairRouterRewardToken(address _pair, IUniswapV2Router02 _router)
        external
        onlyOwner
    {
        pair = _pair;
        router = _router;
    }

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

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

    function endLaunchProtection() external onlyOwner {
        isLaunchProtectionMode = false;
    }

    function setSwapEnabled(bool enabled) external onlyOwner {
        swapEnabled = enabled;
        SwapUpdated(enabled);
    }

    function setFeeActive(bool value) external onlyOwner {
        isFeeActive = value;
    }

    function setTaxFee(
        uint256 buy,
        uint256 sell,
        uint256 p2p
    ) external onlyOwner {
        _taxFee[0] = buy;
        _taxFee[1] = sell;
        _taxFee[2] = p2p;
    }

    function setTeamFee(
        uint256 buy,
        uint256 sell,
        uint256 p2p
    ) external onlyOwner {
        _teamFee[0] = buy;
        _teamFee[1] = sell;
        _teamFee[2] = p2p;
    }

    function setMarketingFee(
        uint256 buy,
        uint256 sell,
        uint256 p2p
    ) external onlyOwner {
        _marketingFee[0] = buy;
        _marketingFee[1] = sell;
        _marketingFee[2] = p2p;
    }

    function setMarketingWallet(address wallet) external onlyOwner {
        marketingWallet = wallet;
    }

    function setTeamWallet(address wallet) external onlyOwner {
        teamWallet = wallet;
    }

    function setMaxTxAmount(uint256 percentage) external onlyOwner {
        maxTxAmount = _tokenTotal.mul(percentage).div(10000);
    }

    function setMinTokensBeforeSwap(uint256 amount) external onlyOwner {
        minTokensBeforeSwap = amount;
    }

    receive() external payable {}
}

// File: contracts/external/Context.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with GSN meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return 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;
    }
}