dsa-connectors/contracts/mainnet/connectors/fee/main.sol

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pragma solidity ^0.7.0;
/**
* @title Fee.
* @dev Calculate Fee.
*/
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import { DSMath } from "../../common/math.sol";
import { Basic } from "../../common/basic.sol";
abstract contract FeeResolver is DSMath, Basic {
/**
* @dev Calculate fee
* @notice Calculates fee on a given amount
* @param amount token amount to caculate fee.
* @param fee fee percentage. Eg: 1% => 1e17, 100% => 1e18.
* @param getId Get token amount at this ID from `InstaMemory` Contract.
* @param setId Set total amount at this ID in `InstaMemory` Contract.
* @param setIdFee Set only fee amount at this ID in `InstaMemory` Contract.
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*/
function calculateFee(
uint amount,
uint fee,
uint getId,
uint setId,
uint setIdFee
) external payable returns (string memory _eventName, bytes memory _eventParam) {
uint _amt = getUint(getId, amount);
uint feeAmt = wmul(_amt, fee);
uint totalAmt = add(_amt, feeAmt);
setUint(setId, totalAmt);
setUint(setIdFee, feeAmt);
}
/**
* @dev Calculate amount minus fee
* @notice Calculates amount minus fee
* @param amount token amount to caculate fee.
* @param fee fee percentage. Eg: 1% => 1e17, 100% => 1e18.
* @param getId Get token amount at this ID from `InstaMemory` Contract.
* @param setIdAmtMinusFee Set amount minus fee amount at this ID in `InstaMemory` Contract.
* @param setIdFee Set only fee amount at this ID in `InstaMemory` Contract.
*/
function calculateAmtMinusFee(
uint amount,
uint fee,
uint getId,
uint setIdAmtMinusFee,
uint setIdFee
) external payable {
uint _amt = getUint(getId, amount);
uint feeAmt = wmul(_amt, fee);
uint amountMinusFee = sub(_amt, feeAmt);
setUint(setIdAmtMinusFee, amountMinusFee);
setUint(setIdFee, feeAmt);
}
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}
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contract ConnectV2Fee is FeeResolver {
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string public constant name = "Fee-v1";
}