// Dependency file: @openzeppelin/contracts/utils/math/SafeMath.sol

// SPDX-License-Identifier: MIT

// pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
* now has built in overflow checking.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a b;
if (c < a) return (false, 0);
return (true, c);
}
}

/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}

/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}

/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}

/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}

/**
* @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) {
return a b;
}

/**
* @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 a - b;
}

/**
* @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) {
return a * b;
}

/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}

/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting 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 a % b;
}

/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}

/**
* @dev Returns the integer division of two unsigned integers, reverting 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) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}

/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* 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) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}


// Dependency file: @openzeppelin/contracts/proxy/Clones.sol


// pragma solidity ^0.8.0;

/**
* @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for
* deploying minimal proxy contracts, also known as "clones".
*
* > To simply and cheaply clone contract functionality in an immutable way, this standard specifies
* > a minimal bytecode implementation that delegates all calls to a known, fixed address.
*
* The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2`
* (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the
* deterministic method.
*
* _Available since v3.4._
*/
library Clones {
/**
* @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
*
* This function uses the create opcode, which should never revert.
*/
function clone(address implementation) internal returns (address instance) {
assembly {
let ptr := mload(0x40)
mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
mstore(add(ptr, 0x14), shl(0x60, implementation))
mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
instance := create(0, ptr, 0x37)
}
require(instance != address(0), "ERC1167: create failed");
}

/**
* @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
*
* This function uses the create2 opcode and a `salt` to deterministically deploy
* the clone. Using the same `implementation` and `salt` multiple time will revert, since
* the clones cannot be deployed twice at the same address.
*/
function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) {
assembly {
let ptr := mload(0x40)
mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
mstore(add(ptr, 0x14), shl(0x60, implementation))
mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
instance := create2(0, ptr, 0x37, salt)
}
require(instance != address(0), "ERC1167: create2 failed");
}

/**
* @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
*/
function predictDeterministicAddress(
address implementation,
bytes32 salt,
address deployer
) internal pure returns (address predicted) {
assembly {
let ptr := mload(0x40)
mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
mstore(add(ptr, 0x14), shl(0x60, implementation))
mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf3ff00000000000000000000000000000000)
mstore(add(ptr, 0x38), shl(0x60, deployer))
mstore(add(ptr, 0x4c), salt)
mstore(add(ptr, 0x6c), keccak256(ptr, 0x37))
predicted := keccak256(add(ptr, 0x37), 0x55)
}
}

/**
* @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
*/
function predictDeterministicAddress(address implementation, bytes32 salt)
internal
view
returns (address predicted)
{
return predictDeterministicAddress(implementation, salt, address(this));
}
}


// Dependency file: contracts/interfaces/IUniswapV2Factory.sol

// 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;
}


// Dependency file: contracts/interfaces/IUniswapV2Router02.sol

// 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);
}

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;
}


// Dependency file: contracts/interfaces/IERC20Extended.sol

// pragma solidity =0.8.4;

interface IERC20Extended {
function totalSupply() external view returns (uint256);

function decimals() external view returns (uint8);

function symbol() external view returns (string memory);

function name() external view returns (string memory);

function balanceOf(address account) external view returns (uint256);

function transfer(address recipient, uint256 amount)
external
returns (bool);

function allowance(address _owner, address spender)
external
view
returns (uint256);

function approve(address spender, uint256 amount) external returns (bool);

function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);

event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}


// Dependency file: contracts/buyback/Auth.sol

// pragma solidity =0.8.4;

abstract contract Auth {
address internal owner;
mapping(address => bool) internal authorizations;

constructor(address _owner) {
owner = _owner;
authorizations[_owner] = true;
}

/**
* Function modifier to require caller to be contract owner
*/
modifier onlyOwner() {
require(isOwner(msg.sender), "!OWNER");
_;
}

/**
* Function modifier to require caller to be authorized
*/
modifier authorized() {
require(isAuthorized(msg.sender), "!AUTHORIZED");
_;
}

/**
* Authorize address. Owner only
*/
function authorize(address adr) public onlyOwner {
authorizations[adr] = true;
}

/**
* Remove address' authorization. Owner only
*/
function unauthorize(address adr) public onlyOwner {
authorizations[adr] = false;
}

/**
* Check if address is owner
*/
function isOwner(address account) public view returns (bool) {
return account == owner;
}

/**
* Return address' authorization status
*/
function isAuthorized(address adr) public view returns (bool) {
return authorizations[adr];
}

/**
* Transfer ownership to new address. Caller must be owner. Leaves old owner authorized
*/
function transferOwnership(address payable adr) public onlyOwner {
owner = adr;
authorizations[adr] = true;
emit OwnershipTransferred(adr);
}

event OwnershipTransferred(address owner);
}


// Dependency file: contracts/buyback/DividendDistributor.sol

// pragma solidity =0.8.4;

// import "@openzeppelin/contracts/utils/math/SafeMath.sol";
// import "contracts/interfaces/IUniswapV2Router02.sol";
// import "contracts/interfaces/IERC20Extended.sol";

interface IDividendDistributor {
function setDistributionCriteria(
uint256 _minPeriod,
uint256 _minDistribution
) external;

function setShare(address shareholder, uint256 amount) external;

function deposit() external payable;

function process(uint256 gas) external;
}

contract DividendDistributor is IDividendDistributor {
using SafeMath for uint256;

address public _token;

struct Share {
uint256 amount;
uint256 totalExcluded;
uint256 totalRealised;
}

IERC20Extended public rewardToken;
IUniswapV2Router02 public router;

address[] public shareholders;
mapping(address => uint256) public shareholderIndexes;
mapping(address => uint256) public shareholderClaims;

mapping(address => Share) public shares;

uint256 public totalShares;
uint256 public totalDividends;
uint256 public totalDistributed;
uint256 public dividendsPerShare;
uint256 public dividendsPerShareAccuracyFactor;

uint256 public minPeriod;
uint256 public minDistribution;

uint256 currentIndex;

bool initialized;
modifier initializer() {
require(!initialized);
_;
initialized = true;
}

modifier onlyToken() {
require(msg.sender == _token);
_;
}

constructor(address rewardToken_, address router_) {
_token = msg.sender;
rewardToken = IERC20Extended(rewardToken_);
router = IUniswapV2Router02(router_);

dividendsPerShareAccuracyFactor = 10**36;
minPeriod = 1 hours;
minDistribution = 1 * (10**rewardToken.decimals());
}

function setDistributionCriteria(
uint256 _minPeriod,
uint256 _minDistribution
) external override onlyToken {
minPeriod = _minPeriod;
minDistribution = _minDistribution;
}

function setShare(address shareholder, uint256 amount)
external
override
onlyToken
{
if (shares[shareholder].amount > 0) {
distributeDividend(shareholder);
}

if (amount > 0 && shares[shareholder].amount == 0) {
addShareholder(shareholder);
} else if (amount == 0 && shares[shareholder].amount > 0) {
removeShareholder(shareholder);
}

totalShares = totalShares.sub(shares[shareholder].amount).add(amount);
shares[shareholder].amount = amount;
shares[shareholder].totalExcluded = getCumulativeDividends(
shares[shareholder].amount
);
}

function deposit() external payable override onlyToken {
uint256 balanceBefore = rewardToken.balanceOf(address(this));

address[] memory path = new address[](2);
path[0] = router.WETH();
path[1] = address(rewardToken);

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

uint256 amount = rewardToken.balanceOf(address(this)).sub(
balanceBefore
);

totalDividends = totalDividends.add(amount);
dividendsPerShare = dividendsPerShare.add(
dividendsPerShareAccuracyFactor.mul(amount).div(totalShares)
);
}

function process(uint256 gas) external override onlyToken {
uint256 shareholderCount = shareholders.length;

if (shareholderCount == 0) {
return;
}

uint256 gasUsed = 0;
uint256 gasLeft = gasleft();

uint256 iterations = 0;

while (gasUsed < gas && iterations < shareholderCount) {
if (currentIndex >= shareholderCount) {
currentIndex = 0;
}

if (shouldDistribute(shareholders[currentIndex])) {
distributeDividend(shareholders[currentIndex]);
}

gasUsed = gasUsed.add(gasLeft.sub(gasleft()));
gasLeft = gasleft();
currentIndex ;
iterations ;
}
}

function shouldDistribute(address shareholder)
internal
view
returns (bool)
{
return
shareholderClaims[shareholder] minPeriod < block.timestamp &&
getUnpaidEarnings(shareholder) > minDistribution;
}

function distributeDividend(address shareholder) internal {
if (shares[shareholder].amount == 0) {
return;
}

uint256 amount = getUnpaidEarnings(shareholder);
if (amount > 0) {
totalDistributed = totalDistributed.add(amount);
rewardToken.transfer(shareholder, amount);
shareholderClaims[shareholder] = block.timestamp;
shares[shareholder].totalRealised = shares[shareholder]
.totalRealised
.add(amount);
shares[shareholder].totalExcluded = getCumulativeDividends(
shares[shareholder].amount
);
}
}

function claimDividend() external {
distributeDividend(msg.sender);
}

function getUnpaidEarnings(address shareholder)
public
view
returns (uint256)
{
if (shares[shareholder].amount == 0) {
return 0;
}

uint256 shareholderTotalDividends = getCumulativeDividends(
shares[shareholder].amount
);
uint256 shareholderTotalExcluded = shares[shareholder].totalExcluded;

if (shareholderTotalDividends <= shareholderTotalExcluded) {
return 0;
}

return shareholderTotalDividends.sub(shareholderTotalExcluded);
}

function getCumulativeDividends(uint256 share)
internal
view
returns (uint256)
{
return
share.mul(dividendsPerShare).div(dividendsPerShareAccuracyFactor);
}

function addShareholder(address shareholder) internal {
shareholderIndexes[shareholder] = shareholders.length;
shareholders.push(shareholder);
}

function removeShareholder(address shareholder) internal {
shareholders[shareholderIndexes[shareholder]] = shareholders[
shareholders.length - 1
];
shareholderIndexes[
shareholders[shareholders.length - 1]
] = shareholderIndexes[shareholder];
shareholders.pop();
}
}


// Dependency file: contracts/BaseToken.sol

// pragma solidity =0.8.4;

enum TokenType {
standard,
antiBotStandard,
liquidityGenerator,
antiBotLiquidityGenerator,
baby,
antiBotBaby,
buybackBaby,
antiBotBuybackBaby
}

abstract contract BaseToken {
event TokenCreated(
address indexed owner,
address indexed token,
TokenType tokenType,
uint256 version
);
}


// Root file: contracts/buyback/BuybackBabyToken.sol

pragma solidity =0.8.4;

// import "@openzeppelin/contracts/utils/math/SafeMath.sol";
// import "@openzeppelin/contracts/proxy/Clones.sol";
// import "contracts/interfaces/IUniswapV2Factory.sol";
// import "contracts/interfaces/IUniswapV2Router02.sol";
// import "contracts/interfaces/IERC20Extended.sol";
// import "contracts/buyback/Auth.sol";
// import "contracts/buyback/DividendDistributor.sol";
// import "contracts/BaseToken.sol";

contract BuybackBabyToken is IERC20Extended, Auth, BaseToken {
using SafeMath for uint256;

uint256 public constant VERSION = 1;

address private constant DEAD = address(0xdead);
address private constant ZERO = address(0);
uint8 private constant _decimals = 9;

string private _name;
string private _symbol;
uint256 private _totalSupply;

address public rewardToken;
IUniswapV2Router02 public router;
address public pair;
address public autoLiquidityReceiver;
address public marketingFeeReceiver;

uint256 public liquidityFee; // default: 200
uint256 public buybackFee; // default: 300
uint256 public reflectionFee; // default: 800
uint256 public marketingFee; // default: 100
uint256 public totalFee;
uint256 public feeDenominator; // default: 10000

uint256 public targetLiquidity; // default: 25
uint256 public targetLiquidityDenominator; // default: 100

uint256 public buybackMultiplierNumerator; // default: 200
uint256 public buybackMultiplierDenominator; // default: 100
uint256 public buybackMultiplierTriggeredAt;
uint256 public buybackMultiplierLength; // default: 30 mins

bool public autoBuybackEnabled;

uint256 public autoBuybackCap;
uint256 public autoBuybackAccumulator;
uint256 public autoBuybackAmount;
uint256 public autoBuybackBlockPeriod;
uint256 public autoBuybackBlockLast;

DividendDistributor public distributor;

uint256 public distributorGas;

bool public swapEnabled;
uint256 public swapThreshold;

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

mapping(address => bool) public buyBacker;
mapping(address => bool) public isFeeExempt;
mapping(address => bool) public isDividendExempt;

event AutoLiquify(uint256 amountBNB, uint256 amountBOG);
event BuybackMultiplierActive(uint256 duration);

bool inSwap;
modifier swapping() {
inSwap = true;
_;
inSwap = false;
}

modifier onlyBuybacker() {
require(buyBacker[msg.sender] == true, "Not a buybacker");
_;
}

constructor(
string memory name_,
string memory symbol_,
uint256 totalSupply_,
address rewardToken_,
address router_,
uint256[5] memory feeSettings_,
address serviceFeeReceiver_,
uint256 serviceFee_
) payable Auth(msg.sender) {
_name = name_;
_symbol = symbol_;
_totalSupply = totalSupply_;

rewardToken = rewardToken_;
router = IUniswapV2Router02(router_);
pair = IUniswapV2Factory(router.factory()).createPair(
address(this),
router.WETH()
);
distributor = new DividendDistributor(rewardToken_, router_);

_initializeFees(feeSettings_);
_initializeLiquidityBuyBack();

distributorGas = 500000;
swapEnabled = true;
swapThreshold = _totalSupply / 20000; // 0.005%

isFeeExempt[msg.sender] = true;
isDividendExempt[pair] = true;
isDividendExempt[address(this)] = true;
isDividendExempt[DEAD] = true;
buyBacker[msg.sender] = true;

autoLiquidityReceiver = msg.sender;
marketingFeeReceiver = msg.sender;

_allowances[address(this)][address(router)] = _totalSupply;
_allowances[address(this)][address(pair)] = _totalSupply;

_balances[msg.sender] = _totalSupply;
emit Transfer(address(0), msg.sender, _totalSupply);

emit TokenCreated(
msg.sender,
address(this),
TokenType.buybackBaby,
VERSION
);

payable(serviceFeeReceiver_).transfer(serviceFee_);
}

function _initializeFees(uint256[5] memory feeSettings_) internal {
_setFees(
feeSettings_[0], // liquidityFee
feeSettings_[1], // buybackFee
feeSettings_[2], // reflectionFee
feeSettings_[3], // marketingFee
feeSettings_[4] // feeDenominator
);
}

function _initializeLiquidityBuyBack() internal {
targetLiquidity = 25;
targetLiquidityDenominator = 100;

buybackMultiplierNumerator = 200;
buybackMultiplierDenominator = 100;
buybackMultiplierLength = 30 minutes;
}

receive() external payable {}

function totalSupply() external view override returns (uint256) {
return _totalSupply;
}

function decimals() external pure override returns (uint8) {
return _decimals;
}

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

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

function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}

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

function approve(address spender, uint256 amount)
public
override
returns (bool)
{
_allowances[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}

function approveMax(address spender) external returns (bool) {
return approve(spender, _totalSupply);
}

function transfer(address recipient, uint256 amount)
external
override
returns (bool)
{
return _transferFrom(msg.sender, recipient, amount);
}

function transferFrom(
address sender,
address recipient,
uint256 amount
) external override returns (bool) {
if (_allowances[sender][msg.sender] != _totalSupply) {
_allowances[sender][msg.sender] = _allowances[sender][msg.sender]
.sub(amount, "Insufficient Allowance");
}

return _transferFrom(sender, recipient, amount);
}

function _transferFrom(
address sender,
address recipient,
uint256 amount
) internal returns (bool) {
if (inSwap) {
return _basicTransfer(sender, recipient, amount);
}

if (shouldSwapBack()) {
swapBack();
}
if (shouldAutoBuyback()) {
triggerAutoBuyback();
}

_balances[sender] = _balances[sender].sub(
amount,
"Insufficient Balance"
);

uint256 amountReceived = shouldTakeFee(sender)
? takeFee(sender, recipient, amount)
: amount;

_balances[recipient] = _balances[recipient].add(amountReceived);

if (!isDividendExempt[sender]) {
try distributor.setShare(sender, _balances[sender]) {} catch {}
}
if (!isDividendExempt[recipient]) {
try
distributor.setShare(recipient, _balances[recipient])
{} catch {}
}

try distributor.process(distributorGas) {} catch {}

emit Transfer(sender, recipient, amountReceived);
return true;
}

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

function shouldTakeFee(address sender) internal view returns (bool) {
return !isFeeExempt[sender];
}

function getTotalFee(bool selling) public view returns (uint256) {
if (selling) {
return getMultipliedFee();
}
return totalFee;
}

function getMultipliedFee() public view returns (uint256) {
if (
buybackMultiplierTriggeredAt.add(buybackMultiplierLength) >
block.timestamp
) {
uint256 remainingTime = buybackMultiplierTriggeredAt
.add(buybackMultiplierLength)
.sub(block.timestamp);
uint256 feeIncrease = totalFee
.mul(buybackMultiplierNumerator)
.div(buybackMultiplierDenominator)
.sub(totalFee);
return
totalFee.add(
feeIncrease.mul(remainingTime).div(buybackMultiplierLength)
);
}
return totalFee;
}

function takeFee(
address sender,
address receiver,
uint256 amount
) internal returns (uint256) {
uint256 feeAmount = amount.mul(getTotalFee(receiver == pair)).div(
feeDenominator
);

_balances[address(this)] = _balances[address(this)].add(feeAmount);
emit Transfer(sender, address(this), feeAmount);

return amount.sub(feeAmount);
}

function shouldSwapBack() internal view returns (bool) {
return
msg.sender != pair &&
!inSwap &&
swapEnabled &&
_balances[address(this)] >= swapThreshold;
}

function swapBack() internal swapping {
uint256 dynamicLiquidityFee = isOverLiquified(
targetLiquidity,
targetLiquidityDenominator
)
? 0
: liquidityFee;
uint256 amountToLiquify = swapThreshold
.mul(dynamicLiquidityFee)
.div(totalFee)
.div(2);
uint256 amountToSwap = swapThreshold.sub(amountToLiquify);

address[] memory path = new address[](2);
path[0] = address(this);
path[1] = router.WETH();
uint256 balanceBefore = address(this).balance;

router.swapExactTokensForETHSupportingFeeOnTransferTokens(
amountToSwap,
0,
path,
address(this),
block.timestamp
);

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

uint256 totalBNBFee = totalFee.sub(dynamicLiquidityFee.div(2));

uint256 amountBNBLiquidity = amountBNB
.mul(dynamicLiquidityFee)
.div(totalBNBFee)
.div(2);
uint256 amountBNBReflection = amountBNB.mul(reflectionFee).div(
totalBNBFee
);
uint256 amountBNBMarketing = amountBNB.mul(marketingFee).div(
totalBNBFee
);

try distributor.deposit{ value: amountBNBReflection }() {} catch {}
payable(marketingFeeReceiver).transfer(amountBNBMarketing);

if (amountToLiquify > 0) {
router.addLiquidityETH{ value: amountBNBLiquidity }(
address(this),
amountToLiquify,
0,
0,
autoLiquidityReceiver,
block.timestamp
);
emit AutoLiquify(amountBNBLiquidity, amountToLiquify);
}
}

function shouldAutoBuyback() internal view returns (bool) {
return
msg.sender != pair &&
!inSwap &&
autoBuybackEnabled &&
autoBuybackBlockLast autoBuybackBlockPeriod <= block.number && // After N blocks from last buyback
address(this).balance >= autoBuybackAmount;
}

function triggerZeusBuyback(uint256 amount, bool triggerBuybackMultiplier)
external
authorized
{
buyTokens(amount, DEAD);
if (triggerBuybackMultiplier) {
buybackMultiplierTriggeredAt = block.timestamp;
emit BuybackMultiplierActive(buybackMultiplierLength);
}
}

function clearBuybackMultiplier() external authorized {
buybackMultiplierTriggeredAt = 0;
}

function triggerAutoBuyback() internal {
buyTokens(autoBuybackAmount, DEAD);
autoBuybackBlockLast = block.number;
autoBuybackAccumulator = autoBuybackAccumulator.add(autoBuybackAmount);
if (autoBuybackAccumulator > autoBuybackCap) {
autoBuybackEnabled = false;
}
}

function buyTokens(uint256 amount, address to) internal swapping {
address[] memory path = new address[](2);
path[0] = router.WETH();
path[1] = address(this);

router.swapExactETHForTokensSupportingFeeOnTransferTokens{
value: amount
}(0, path, to, block.timestamp);
}

function setAutoBuybackSettings(
bool _enabled,
uint256 _cap,
uint256 _amount,
uint256 _period
) external authorized {
autoBuybackEnabled = _enabled;
autoBuybackCap = _cap;
autoBuybackAccumulator = 0;
autoBuybackAmount = _amount;
autoBuybackBlockPeriod = _period;
autoBuybackBlockLast = block.number;
}

function setBuybackMultiplierSettings(
uint256 numerator,
uint256 denominator,
uint256 length
) external authorized {
require(numerator / denominator <= 2 && numerator > denominator);
buybackMultiplierNumerator = numerator;
buybackMultiplierDenominator = denominator;
buybackMultiplierLength = length;
}

function setIsDividendExempt(address holder, bool exempt)
external
authorized
{
require(holder != address(this) && holder != pair);
isDividendExempt[holder] = exempt;
if (exempt) {
distributor.setShare(holder, 0);
} else {
distributor.setShare(holder, _balances[holder]);
}
}

function setIsFeeExempt(address holder, bool exempt) external authorized {
isFeeExempt[holder] = exempt;
}

function setBuyBacker(address acc, bool add) external authorized {
buyBacker[acc] = add;
}

function setFees(
uint256 _liquidityFee,
uint256 _buybackFee,
uint256 _reflectionFee,
uint256 _marketingFee,
uint256 _feeDenominator
) public authorized {
_setFees(
_liquidityFee,
_buybackFee,
_reflectionFee,
_marketingFee,
_feeDenominator
);
}

function _setFees(
uint256 _liquidityFee,
uint256 _buybackFee,
uint256 _reflectionFee,
uint256 _marketingFee,
uint256 _feeDenominator
) internal {
liquidityFee = _liquidityFee;
buybackFee = _buybackFee;
reflectionFee = _reflectionFee;
marketingFee = _marketingFee;
totalFee = _liquidityFee.add(_buybackFee).add(_reflectionFee).add(
_marketingFee
);
feeDenominator = _feeDenominator;
require(
totalFee < feeDenominator / 4,
"Total fee should not be greater than 1/4 of fee denominator"
);
}

function setFeeReceivers(
address _autoLiquidityReceiver,
address _marketingFeeReceiver
) external authorized {
autoLiquidityReceiver = _autoLiquidityReceiver;
marketingFeeReceiver = _marketingFeeReceiver;
}

function setSwapBackSettings(bool _enabled, uint256 _amount)
external
authorized
{
swapEnabled = _enabled;
swapThreshold = _amount;
}

function setTargetLiquidity(uint256 _target, uint256 _denominator)
external
authorized
{
targetLiquidity = _target;
targetLiquidityDenominator = _denominator;
}

function setDistributionCriteria(
uint256 _minPeriod,
uint256 _minDistribution
) external authorized {
distributor.setDistributionCriteria(_minPeriod, _minDistribution);
}

function setDistributorSettings(uint256 gas) external authorized {
require(gas < 750000, "Gas must be lower than 750000");
distributorGas = gas;
}

function getCirculatingSupply() public view returns (uint256) {
return _totalSupply.sub(balanceOf(DEAD)).sub(balanceOf(ZERO));
}

function getLiquidityBacking(uint256 accuracy)
public
view
returns (uint256)
{
return accuracy.mul(balanceOf(pair).mul(2)).div(getCirculatingSupply());
}

function isOverLiquified(uint256 target, uint256 accuracy)
public
view
returns (bool)
{
return getLiquidityBacking(accuracy) > target;
}
}