interface IRBSTStaking {

    // --- Events --
    
    event RBSTAddressSet(address _rbstAddress);
    event RUBCAddressSet(address _rubcAddress);
    event TroveManagerAddressSet(address _troveManager);
    event BorrowerOperationsAddressSet(address _borrowerOperationsAddress);
    event ActivePoolAddressSet(address _activePoolAddress);

    event StakeChanged(address indexed staker, uint newStake);
    event StakingGainsWithdrawn(address indexed staker, uint RUBCGain, uint ETHGain);
    event F_ETHUpdated(uint _F_ETH);
    event F_RUBCUpdated(uint _F_RUBC);
    event TotalRBSTStakedUpdated(uint _totalRBSTStaked);
    event EtherSent(address _account, uint _amount);
    event StakerSnapshotsUpdated(address _staker, uint _F_ETH, uint _F_RUBC);

    // --- Functions ---

    function setAddresses
    (
        address _rbstAddress,
        address _rubcAddress,
        address _troveManagerAddress, 
        address _borrowerOperationsAddress,
        address _activePoolAddress
    )  external;

    function stake(uint _RBSTamount) external;

    function unstake(uint _RBSTamount) external;

    function increaseF_ETH(uint _ETHFee) external; 

    function increaseF_RUBC(uint _RBSTFee) external;  

    function getPendingETHGain(address _user) external view returns (uint);

    function getPendingRUBCGain(address _user) external view returns (uint);
}
function setAddresses
    (
        address _rbstAddress,
        address _rubcAddress,
        address _troveManagerAddress, 
        address _borrowerOperationsAddress,
        address _activePoolAddress
    )  external;
// --- Functions ---