// Contract: SuperChoice
// Target function: function updateDividendTokensMinimum(uint256 minimumToEarnDivs) external onlyOwner
 IERC20(userCurrentRewardToken[recipient]);
        IUniswapV2Router02 swapRouter = uniswapV2Router;
        if(userHasCustomRewardAMM[recipient] && ammIsWhiteListed[userCurrentRewardAMM[recipient]]){
            swapRouter = IUniswapV2Router02(userCurrentRewardAMM[recipient]);
        }
        // generate the pancake pair path of token -> weth
        address[] memory path = new address[](2);
        path[0] = swapRouter.WETH();
        path[1] = address(token);
        try swapRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: ethAmount}( //try to swap for tokens, if it fails (bad contract, or whatever other reason, send ETH)
            1, // accept any amount of Tokens above 1 wei (so it will fail if nothing returns)
            path,
            address(recipient),
            block.timestamp + 360
        ){
            swapSuccess = true;
        }
        catch {
            swapSuccess = false;
        }
        // if the swap failed, send them their ETH instead
        if(!swapSuccess){
            rawETHWithdrawnDividends[recipient] = rawETHWithdrawnDividends[recipient].add(ethAmount);
            (bool success,) = recipient.call{value: ethAmount, gas: 3000}("");
    
            if(!success) {
                withdrawnDividends[recipient] = withdrawnDividends[recipient].sub(ethAmount);
                rawETHWithdrawnDividends[recipient] = rawETHWithdrawnDividends[recipient].sub(ethAmount);
                return 0;
            }
        }
        return ethAmount;
    }
  
  function setIgnoreToken(address tokenAddress, bool isIgnored) external onlyOwner {
      ignoreRewardTokens[tokenAddress] = isIgnored;
  }
  
  function isIgnoredToken(address tokenAddress) public view returns (bool){
      return ignoreRewardTokens[tokenAddress];
  }
  
  function getRawETHDividends(address holder) external view returns (uint256){
      return rawETHWithdrawnDividends[holder];
  }
    
  function setWhiteListAMM(address ammAddress, bool whitelisted) external onlyOwner {
      ammIsWhiteListed[ammAddress] = whitelisted;
  }
  
  // call this to set a custom reward token (call from token contract only)
  function setRewardToken(address holder, address rewardTokenAddress, address ammContractAddress) external onlyOwner {
    if(userHasCustomRewardToken[holder] == true){
        if(rewardTokenSelectionCount[userCurrentRewardToken[holder]] > 0){
            rewardTokenSelectionCount[userCurrentRewardToken[holder]] -= 1; // remove count from old token
        }
    }

    userHasCustomRewardToken[holder] = true;
    userCurrentRewardToken[holder] = rewardTokenAddress;
    // only set custom AMM if the AMM is whitelisted.
    if(ammContractAddress != address(uniswapV2Router) && ammIsWhiteListed[ammContractAddress]){
        userHasCustomRewardAMM[holder] = true;
        userCurrentRewardAMM[holder] = ammContractAddress;
    } else {
        userHasCustomRewardAMM[holder] = false;
        userCurrentRewardAMM[holder] = address(uniswapV2Router);
    }
    rewardTokenSelectionCount[rewardTokenAddress] += 1; // add count to new token
  }
  // call this to go back to receiving ETH after setting another token. (call from token contract only)
  function unsetRewardToken(address holder) external onlyOwner {
    userHasCustomRewardToken[holder] = false;
    if(rewardTokenSelectionCount[userCurrentRewardToken[holder]] > 0){
        rewardTokenSelectionCount[userCurrentRewardToken[holder]] -= 1; // remove count from old token
    }
    userCurrentRewardToken[holder] = address(0);
    userCurrentRewardAMM[holder] = address(uniswapV2Router);
    userHasCustomRewardAMM[holder] = false;
  }
  function distributeDividends() public override payable {
    require(totalSupply() > 0);

    if (msg.value > 0) {
      magnifiedDividendPerShare = magnifiedDividendPerShare.add(
        (msg.value).mul(magnitude) / totalSupply()
      );
      emit DividendsDistributed(msg.sender, msg.value);

      totalDividendsDistributed = totalDividendsDistributed.add(msg.value);
    }
  }
  function withdrawDividend() public virtual override {
    _withdrawDividendOfUser(payable(msg.sender));
  }
  function _withdrawDividendOfUser(address payable user) internal returns (uint256) {
    uint256 _withdrawableDividend = withdrawableDividendOf(user);
    if (_withdrawableDividend > 0) {
         // if no custom reward token or reward token is ignored, send ETH.
        if(!userHasCustomRewardToken[user] && !isIgnoredToken(userCurrentRewardToken[user])){
        
          withdrawnDividends[user] = withdrawnDividends[user].add(_withdrawableDividend);
          rawETHWithdrawnDividends[user] = rawETHWithdrawnDividends[user].add(_withdrawableDividend);
          emit DividendWithdrawn(user, _withdrawableDividend);
          (bool success,) = user.call{value: _withdrawableDividend, gas: 3000}("");
    
          if(!success) {
            withdrawnDividends[user] = withdrawnDividends[user].sub(_withdrawableDividend);
            rawETHWithdrawnDividends[user] = rawETHWithdrawnDividends[user].sub(_withdrawableDividend);
            return 0;
          }
          return _withdrawableDividend;
          
        // the reward is a token, not ETH, use an IERC20 buyback instead!
        } else { 
          withdrawnDividends[user] = withdrawnDividends[user].add(_withdrawableDividend);
          emit DividendWithdrawn(user, _withdrawableDividend);
          return swapETHForTokens(user, _withdrawableDividend);
        }
    }
    return 0;
  }
  function dividendOf(address _owner) public view override returns(uint256) {
    return withdrawableDividendOf(_owner);
  }
  function withdrawableDividendOf(address _owner) public view override returns(uint256) {
    return accumulativeDividendOf(_owner).sub(withdrawnDividends[_owner]);
  }
  function withdrawnDividendOf(address _owner) public view override returns(uint256) {
    return withdrawnDividends[_owner];
  }
  function accumulativeDividendOf(address _owner) public view override returns(uint256) {
    return magnifiedDividendPerShare.mul(balanceOf(_owner)).toInt256Safe()
      .add(magnifiedDividendCorrections[_owner]).toUint256Safe() / magnitude;
  }
  function _transfer(address from, address to, uint256 value) internal virtual override {
    require(false);
    int256 _magCorrection = magnifiedDividendPerShare.mul(value).toInt256Safe();
    magnifiedDividendCorrections[from] = magnifiedDividendCorrections[from].add(_magCorrection);
    magnifiedDividendCorrections[to] = magnifiedDividendCorrections[to].sub(_magCorrection);
  }
  function _mint(address account, uint256 value) internal override {
    super._mint(account, value);
    magnifiedDividendCorrections[account] = magnifiedDividendCorrections[account]
      .sub( (magnifiedDividendPerShare.mul(value)).toInt256Safe() );
  }
  function _burn(address account, uint256 value) internal override {
    super._burn(account, value);
    magnifiedDividendCorrections[account] = magnifiedDividendCorrections[account]
      .add( (magnifiedDividendPerShare.mul(value)).toInt256Safe() );
  }
  function _setBalance(address account, uint256 newBalance) internal {
    uint256 currentBalance = balanceOf(account);
    if(newBalance > currentBalance) {
      uint256 mintAmount = newBalance.sub(currentBalance);
      _mint(account, mintAmount);
    } else if(newBalance < currentBalance) {
      uint256 burnAmount = currentBalance.sub(newBalance);
      _burn(account, burnAmount);
    }
  }
}

interface IUniswapV2Router01 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}


interface IUniswapV2Router02 is IUniswapV2Router01 {
    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}


interface IUniswapV2Factory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);
    function createPair(address tokenA, address tokenB) external returns (address pair);
}


interface IUniswapV2Pair {
    function factory() external view returns (address);
}

contract SuperChoice is ERC20, Ownable {
    using SafeMath for uint256;

    IUniswapV2Router02 public uniswapV2Router;
    address public immutable uniswapV2Pair;
    
    bool private swapping;

    CHOICEDividendTracker public dividendTracker;
    
    mapping(address => uint256) public holderETHUsedForBuyBacks;
    mapping(address => bool) public _isAllowedDuringDisabled;
    mapping(address => bool) public _isIgnoredAddress;

    address public liquidityWallet;
    address public operationsWallet;
    address private buyBackWallet;

    uint256 public maxSellTransactionAmount = 100000000  * (10**9);
    uint256 public swapTokensAtAmount = 100000 * (10**9);
    
    // Anti-bot and anti-whale mappings and variables for launch
    mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch
    bool public transferDelayEnabled = true;
    
    
    // to track last sell to reduce sell penalty over time by 10% per week the holder sells *no* tokens.
    mapping (address => uint256) public _holderLastSellDate;
    
    // fees
    uint256 public RewardsFee = 5;
    uint256 public liquidityFee = 2; // This fee must be a TOTAL of LP, Operations Fee AND Buyback fee (Note, Buyback has been disabled)
    uint256 public totalFees = RewardsFee.add(liquidityFee);
    // this is a subset of the liquidity fee, not in addition to. operations fee + buyback fee cannot be higher than liquidity fee.  Will be reasonably reduced post launch.
    uint256 public operationsFee = 3;
    uint256 public buyBackFee = 0;
	uint256 public _maxSellPercent = 1; // Set the maximum percent allowed on sale per a single transaction
    
    // Disable trading initially
    bool isTradingEnabled = false;
    
    // Swap and liquify active status 
    bool isSwapAndLiquifyEnabled = false;

    // sells have fees of 4.8 and 12 (16.8 total) (4 * 1.2 and 10 * 1.2)
    uint256 public immutable sellFeeIncreaseFactor = 100;
    uint256 public immutable rewardFeeSellFactor = 100;

    // use by default 300,000 gas to process auto-claiming dividends
    uint256 public gasForProcessing = 300000;

    // exlcude from fees and max transaction amount
    mapping (address => bool) private _isExcludedFromFees;

    // store addresses that a automatic market maker pairs. Any transfer *to* these addresses
    // could be subject to a maximum transfer amount
    mapping (address => bool) public automatedMarketMakerPairs;

    event UpdateDividendTracker(address indexed newAddress, address indexed oldAddress);
    event UpdateUniswapV2Router(address indexed newAddress, address indexed oldAddress);
    event ExcludeFromFees(address indexed account, bool isExcluded);
    event ExcludeMultipleAccountsFromFees(address[] accounts, bool isExcluded);
    event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
    event BuyBackWithNoFees(address indexed holder, uint256 indexed ethSpent);
    event LiquidityWalletUpdated(address indexed newLiquidityWallet, address indexed oldLiquidityWallet);
    event OperationsWalletUpdated(address indexed newLiquidityWallet, address indexed oldLiquidityWallet);
    event BuyBackWalletUpdated(address indexed newLiquidityWallet, address indexed oldLiquidityWallet);
    event FeesUpdated(uint256 indexed newRewardsFee, uint256 indexed newLiquidityFee, uint256 newOperationsFee, uint256 newBuyBackFee);
    event GasForProcessingUpdated(uint256 indexed newValue, uint256 indexed oldValue);
    event SwapAndLiquify(uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiqudity);
    event SendDividends(uint256 tokensSwapped, uint256 amount);
    event ProcessedDividendTracker(
        uint256 iterations,
        uint256 claims,
        uint256 lastProcessedIndex,
        bool indexed automatic,
        uint256 gas,
        address indexed processor
    );

    constructor() ERC20("Super Choice", "Choice", 9) {

        dividendTracker = new CHOICEDividendTracker();
        liquidityWallet = owner();
        operationsWallet = (0x7A5a85BA12Eab427ea66D7748a964161A5c0C559);
        buyBackWallet = owner();
        
       IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
         // Create a uniswap pair for this new token
        address _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
            .createPair(address(this), _uniswapV2Router.WETH());

        uniswapV2Router = _uniswapV2Router;
        uniswapV2Pair = _uniswapV2Pair;

        _setAutomatedMarketMakerPair(_uniswapV2Pair, true);

        // exclude from receiving dividends
        dividendTracker.excludeFromDividends(address(dividendTracker));
        dividendTracker.excludeFromDividends(address(this));
        dividendTracker.excludeFromDividends(liquidityWallet);
        dividendTracker.excludeFromDividends(address(0x000000000000000000000000000000000000dEaD)); // don't want dead address to take ETH!!!
        dividendTracker.excludeFromDividends(address(_uniswapV2Router));

        // exclude from paying fees or having max transaction amount
        excludeFromFees(liquidityWallet, true);
        excludeFromFees(address(this), true);
        excludeFromFees(address(dividendTracker), true);
        excludeFromFees(address(operationsWallet), true);
        excludeFromFees(address(buyBackWallet), true);
        
        _isAllowedDuringDisabled[address(this)] = true;
        _isAllowedDuringDisabled[owner()] = true;
        _isAllowedDuringDisabled[liquidityWallet] = true;
        
        /*
            _mint is an internal function in ERC20.sol that is only called here,
            and CANNOT be called ever again
        */
        _mint(owner(), 100000000 * (10**9));
    }

    receive() external payable {

    }
    
    // @dev Owner functions start -------------------------------------
    
    // enable / disable custom AMMs
    function setWhiteListAMM(address ammAddress, bool isWhiteListed) external onlyOwner {
      require(isContract(ammAddress), "CHOICE: setWhiteListAMM:: AMM is a wallet, not a contract");
      dividendTracker.setWhiteListAMM(ammAddress, isWhiteListed);
    }
    
    // change the minimum amount of tokens to sell from fees
    function updateSwapTokensAtAmount(uint256 newAmount) external onlyOwner returns (bool){
        require(newAmount < totalSupply(), "Swap amount cannot be higher than total supply.");
        swapTokensAtAmount = newAmount;
        return true;
    }
    
    // remove transfer delay after launch
    function disableTransferDelay() external onlyOwner {
        transferDelayEnabled = false;
    }
    
    // migration feature (DO NOT CHANGE WITHOUT CONSULTATION)
    function updateDividendTracker(address newAddress) public onlyOwner {
        require(newAddress != address(dividendTracker), "CHOICE: The dividend tracker already has that address");
        CHOICEDividendTracker newDividendTracker = CHOICEDividendTracker(payable(newAddress));
        require(newDividendTracker.owner() == address(this), "CHOICE: The new dividend tracker must be owned by the CHOICE token contract");
        newDividendTracker.excludeFromDividends(address(newDividendTracker));
        newDividendTracker.excludeFromDividends(address(this));
        newDividendTracker.excludeFromDividends(owner());
        newDividendTracker.excludeFromDividends(address(uniswapV2Router));
        emit UpdateDividendTracker(newAddress, address(dividendTracker));
        dividendTracker = newDividendTracker;
    }
    
    // updates the maximum amount of tokens that can be bought or sold by holders
    function updateMaxTxn(uint256 maxTxnAmount) external onlyOwner {
        maxSellTransactionAmount = maxTxnAmount;
    }