reward-forward-func.md

function forward(
    bytes memory _signedHashedMessage,
    address _user,
    address _recipient,
    uint _transactionObjectValueField,
    bytes memory _transactionObjectDataField,
    address _rewardTokenAddress,
    uint _rewardAmount
  )
    public
    returns (bool)
  {
    bytes32 hashedMessage = getHash(
      _user,
      _recipient,
      _transactionObjectValueField,
      _transactionObjectDataField,
      _rewardTokenAddress,
      _rewardAmount
    );

    //increment the nonce counter so this tx can't run again
    nonce[_user] += 1;

    //this makes sure signer signed correctly AND signer is a valid bouncer
    require(
      isSignerWhitelisted(hashedMessage, _signedHashedMessage),
      "fn: forward(), msg: forward Signer is not whitelisted"
    );
    // make sure the signer pays in whatever token (or ether) the sender and signer agreed to
    // or skip this if the sender is incentivized in other ways and there is no need for a token
    if (_rewardAmount > 0) {
      // address 0 mean reward with ETH
      if (_rewardTokenAddress == address(0)){
        // reward with ETH
        msg.sender.transfer(_rewardAmount);
      } else {
        // reward token
        require(
          _rewardTokenAddress._safeTransfer(
            msg.sender,
            _rewardAmount
          ),
          "fn: forward(), msg: token transfer failed"
        );
      }
    }
    // execute the transaction with all the given parameters
    require(
      executeCall(_recipient, _transactionObjectValueField, _transactionObjectDataField),
      "fn: forward(), msg: executeCall() function failed"
    );
    emit LogTransactionForward(
      _signedHashedMessage,
      _user,
      _recipient,
      _transactionObjectValueField,
      _transactionObjectDataField,
      _rewardTokenAddress,
      _rewardAmount,
      hashedMessage
    );

    return true;
  }