contract NiceCash is Ownable, AccessControl, Pausable, Pool, AssetManager{

    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    //ACL
    //Manager is the person allowed to manage funds
    bytes32 public constant MANAGER_ROLE = keccak256("MANAGER_ROLE");

    address public externalCommissionAddress;
    uint256 public externalCommissionBalance;
    uint8 public externalCommissionPercentNom;
    uint8 public externalCommissionPercentDenom;

    // mapping (address => Pair) public inLiquidityPool;

    constructor(address _basicToken) 
        // UniswapFeature( _router,  _uniToken) 
        Pool (_basicToken) 
    public {
        _setupRole(DEFAULT_ADMIN_ROLE, _msgSender());
        _setupRole(MANAGER_ROLE, _msgSender());

        //safe mode "on" with commissions
        externalCommissionAddress = msg.sender;
        externalCommissionPercentNom = 3;
        externalCommissionPercentDenom = 10;
    }
    /**
    * @dev Throws if called by any account other than the one with the Manager role granted.
    */
    modifier onlyManager() {
        require(hasRole(MANAGER_ROLE, msg.sender), "Caller is not the Manager");
        _;
    }

    // Asset Management
    function setParamAddress(uint16 _key, address _value) public onlyOwner {
        _setAddress(_key, _value);
    }

    function setParamUInt256(uint16 _key, uint256 _value) public onlyOwner {
        _setUInt256(_key, _value);
    }

    function setPositionManager(uint8 _index, address _manager) public onlyOwner {
        _setPositionManager(_index, _manager);
    }

    function preparePosition(uint8 _manager, address _toToken, uint256 _amount, uint256 _deadline) public onlyManager returns (uint256) {
        return _praparePosition(_manager, address(basicToken), _toToken, _amount, _deadline);
    }

    function openPosition(uint8 _manager, uint16 _index, address _toToken, uint256 _amount, uint256 _deadline) public onlyManager returns (uint256) {
        return _openPosition(_manager, _index, address(basicToken), _toToken, _amount, _deadline);
    }

    function closePosition(uint16 _index, uint256 _ltAmount, uint256 _deadline) public onlyManager returns (uint256) {
        return _closePosition(_index, address(basicToken), _ltAmount, _deadline);
    }

    function exitPosition(uint16 _index, uint256 _ltAmount, uint256 _deadline) public onlyManager returns (uint256) {
        return _exitPosition(_index, address(basicToken), _ltAmount, _deadline);
    }

    function adjustTotalCap() public onlyManager returns (uint256){
        return _adjustTotalCap();
    }

    //external commissions operations

    function withdrawCommission(uint256 amount) public onlyManager {
        require(amount <= externalCommissionBalance, "Amount to be less then external commission available to withdraw");
        basicToken.safeTransfer(externalCommissionAddress, amount);
        externalCommissionBalance = externalCommissionBalance.sub(amount);
    }

    function setExternalCommissionAddress(address _externalCommissionAddress) public onlyOwner {
        externalCommissionAddress = _externalCommissionAddress;
    }

    function setExternalCommissionPercent(uint8 _nom, uint8 _denom) public onlyOwner {
        require (_nom <= _denom, "Commission to be a natural fraction less then 1");
        externalCommissionPercentNom = _nom;
        externalCommissionPercentDenom = _denom;
    }

    

    function pause() onlyOwner public {
        super._pause();
    }

    function unpause() onlyOwner public {
        super._unpause();
    }

    //Views

    function getUserData(address holder) public view returns (uint256, uint256, uint256) {
        //uint256 userBalance =(plt.totalSupply() > 0)? plt.balanceOf(holder).mul(totalCap).div(plt.totalSupply()): 0;
        return (deposits[holder], withdrawals[holder], plt.balanceOf(holder));
    }

    function getTotalValueLocked() public view returns (uint256, uint256){
        return (totalCap, plt.totalSupply());
    }


    //distribute profit between all users
    function _callbackFinRes(uint16 index, uint256 ltAmount, uint256 receivedAmountB, bool isProfit, uint256 finResB) internal override {

        //apply operation fin res to totalcap and calculate commissions
        if(isProfit){
            uint256 externalCommission = finResB.mul(externalCommissionPercentNom).div(externalCommissionPercentDenom);
            externalCommissionBalance = externalCommissionBalance.add(externalCommission);

            uint256 userCommissionProfit = finResB.sub(externalCommission);
            totalCap = totalCap.add(userCommissionProfit);
        }else{
            //decrease totalCap by operation loss result
            //set totalCap to 1wei in case things went so bad... 
            totalCap = (totalCap > finResB)?totalCap.sub(finResB):1;
        }

    }

    function _beforeDeposit(uint256 amount, address holder, address to) internal override {
        require(!paused(), "Cannot deposit when paused");
    }

}
function withdrawCommission(uint256 amount) public onlyManager {
    require(amount <= externalCommissionBalance, "Amount to be less then external commission available to withdraw");
    basicToken.safeTransfer(externalCommissionAddress, amount);
    externalCommissionBalance = externalCommissionBalance.sub(amount);
}

//external commissions operations