contract REBALANCE is Context, IERC20, Ownable {
    using SafeMath for uint256;
    using Address for address;

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

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

    uint256 private constant MAX = ~uint256(0);
    uint256 private constant _tTotal = 10 * 10**6 * 10**18;
    uint256 private _rTotal = (MAX - (MAX % _tTotal));
    uint256 private _tFeeTotal;
	uint256 private _tTaxTierDefaultFee = 8;
	uint256 private _tTaxTierSmallFee = 1;
	uint256 private _tTaxTierMediumFee = 3 ;
	uint256 private _tTaxTierLargeFee = 5;

    string private _name = 'Rebalance Token';
    string private _symbol = 'RBAL';
    uint8 private _decimals = 18;
    
    uint256 private _presaleFlag = 1;
    uint256 private _presaleTaxFee = 1;

    constructor () public {
        _rOwned[_msgSender()] = _rTotal;
        emit Transfer(address(0), _msgSender(), _tTotal);
    }
	
	event FeeLogic(uint256 tEntered, uint256 tFeeCalc, uint256 tAmountGiven);
	
	//  _presaleFlag
	//  
	function setPreSaleFlag(uint256 flagValue) external onlyOwner() {
        require(flagValue == 0 || flagValue == 1, "flagValue must be 0 or 1");
        _presaleFlag =  flagValue;
    }
	
	// _presaleFlag
	function getPreSaleFlag() public view returns (uint256) {
        return _presaleFlag;
    }
    
    //  _presaleTaxFee
	//  
	function setPresaleTaxFee(uint256 feeValue) external onlyOwner() {
        require(feeValue >0, "feeValue must be greater than 0");
        _presaleTaxFee =  feeValue;
    }
	
	// _presaleTaxFee
	function getPresaleTaxFee() public view returns (uint256) {
        return _presaleTaxFee;
    }
    
    
	//  Default
	//  _tTaxTierDefaultFee
	function setTaxTierDefaultFee(uint256 tTaxAmount) external onlyOwner() {
        require(tTaxAmount > 0, "Tax default amount must be greater than 0");
        _tTaxTierDefaultFee =  tTaxAmount;
    }
	
	// _tTaxTierDefaultFee
	function getTaxTierDefaultFee() public view returns (uint256) {
        return _tTaxTierDefaultFee;
    }
	
	
	//  Small
	//  _tTaxTierSmallFee
	function setTaxTierSmallFee(uint256 tTaxAmount) external onlyOwner() {
        require(tTaxAmount > 0, "Tax small amount must be greater than 0");
        _tTaxTierSmallFee =  tTaxAmount;
    }
	
	//  _tTaxTierSmallFee
	function getTaxTierSmallFee() public view returns (uint256) {
        return _tTaxTierSmallFee;
    }
	
	
	// Medium
	//  _tTaxTierMediumFee
	function setTaxTierMediumFee(uint256 tTaxAmount) external onlyOwner() {
        require(tTaxAmount > 0, "Tax medium amount must be greater than 0");
        _tTaxTierMediumFee =  tTaxAmount;
    }
	
	// _tTaxTierMediumFee
	function getTaxTierMediumFee() public view returns (uint256) {
        return _tTaxTierMediumFee;
    }
	
	//  Large
	// _tTaxTierLargeFee
	function setTaxTierLargeFee(uint256 tTaxAmount) external onlyOwner() {
        require(tTaxAmount > 0, "Tax large amount must be greater than 0");
        _tTaxTierLargeFee =  tTaxAmount;
    }
	// _tTaxTierLargeFee
	function getTaxTierLargeFee() public view returns (uint256) {
        return _tTaxTierLargeFee;
    }
	

    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 _tTotal;
    }

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

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

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

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

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

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

    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    function _getTValues(uint256 tAmount) private view returns (uint256, uint256) {
        uint256 tFee = tAmount.mul(_tTaxTierDefaultFee).div(100); 
		
		if( _presaleFlag == 1) {
		    tFee = tAmount.mul(_presaleTaxFee).div(100);
		}else {
    		if( tAmount <= 100 * 10**18 ) {
    			tFee = tAmount.mul(_tTaxTierSmallFee).div(100); 
    		} else if (tAmount <= 1000 * 10**18 ) {
    		    tFee = tAmount.mul(_tTaxTierMediumFee).div(100); 
    		} else if (tAmount <= 10000 * 10**18) {
    		    tFee = tAmount.mul(_tTaxTierLargeFee).div(100); 
    		} else  {
    		   tFee = tAmount.mul(_tTaxTierDefaultFee).div(100); 
    		}
		}
		
        uint256 tTransferAmount = tAmount.sub(tFee);
        
        return (tTransferAmount, tFee);
    }

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

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

    function _getCurrentSupply() private view returns(uint256, uint256) {
        uint256 rSupply = _rTotal;
        uint256 tSupply = _tTotal;
        for (uint256 i = 0; i < _excluded.length; i++) {
            if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal);
            rSupply = rSupply.sub(_rOwned[_excluded[i]]);
            tSupply = tSupply.sub(_tOwned[_excluded[i]]);
        }
        if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
        return (rSupply, tSupply);
    }
}
function setTaxTierLargeFee(uint256 tTaxAmount) external onlyOwner() {
        require(tTaxAmount > 0, "Tax large amount must be greater than 0");
        _tTaxTierLargeFee =  tTaxAmount;
    }
//  Large
// _tTaxTierLargeFee