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fees implemented

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This commit is contained in:
Samyak Jain 2019-06-21 02:59:22 +05:30
parent e016eefce0
commit 34ba587b8b
1 changed files with 27 additions and 0 deletions
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27
contracts/bridges/MakerCompound.sol
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@ -107,6 +107,11 @@ contract DSMath {
z = add(mul(x, WAD), y / 2) / y;
}
function sub(uint a, uint b) internal pure returns (uint c) {
require(b <= a, "SafeMath: subtraction overflow");
c = a - b;
}
}
@ -121,6 +126,9 @@ contract Helper is DSMath {
address public cEth = 0x4Ddc2D193948926D02f9B1fE9e1daa0718270ED5;
address public cDai = 0xF5DCe57282A584D2746FaF1593d3121Fcac444dC;
address public feeOne = 0xd8db02A498E9AFbf4A32BC006DC1940495b4e592;
address public feeTwo = 0xa7615CD307F323172331865181DC8b80a2834324;
/**
* @dev setting allowance to compound for the "user proxy" if required
*/
@ -403,6 +411,7 @@ contract BridgeResolver is MakerResolver {
contract LiquidityProvider is BridgeResolver {
mapping (address => uint) public deposits; // amount of CDAI deposits
uint public totalDeposits;
/**
* @dev Deposit DAI for liquidity
@ -415,6 +424,7 @@ contract LiquidityProvider is BridgeResolver {
uint cDaiAmt = wdiv(amt, exchangeRate);
cDaiAmt = wmul(cDaiAmt, exchangeRate) <= amt ? cDaiAmt : cDaiAmt - 1;
deposits[msg.sender] += cDaiAmt;
totalDeposits += cDaiAmt;
}
/**
@ -433,6 +443,7 @@ contract LiquidityProvider is BridgeResolver {
require(cToken.redeem(withdrawAmt) == 0, "something went wrong");
require(ERC20Interface(daiAddr).transfer(msg.sender, daiAmt), "Dai Transfer failed");
deposits[msg.sender] -= withdrawAmt;
totalDeposits -= withdrawAmt;
}
/**
@ -442,6 +453,7 @@ contract LiquidityProvider is BridgeResolver {
CTokenInterface cToken = CTokenInterface(cDai);
require(cToken.transferFrom(msg.sender, address(this), amt) == true, "Nothing to deposit");
deposits[msg.sender] += amt;
totalDeposits += amt;
}
/**
@ -455,6 +467,21 @@ contract LiquidityProvider is BridgeResolver {
}
require(CTokenInterface(cDai).transfer(msg.sender, withdrawAmt), "Dai Transfer failed");
deposits[msg.sender] -= withdrawAmt;
totalDeposits -= withdrawAmt;
}
/**
* collecting fees generated overtime
*/
function withdrawFeesInCDai(uint num) public {
CTokenInterface cToken = CTokenInterface(cDai);
uint cDaiBal = cToken.balanceOf(address(this));
uint withdrawAmt = sub(cDaiBal, totalDeposits);
if (num == 0) {
require(cToken.transfer(feeOne, withdrawAmt), "Dai Transfer failed");
} else {
require(cToken.transfer(feeTwo, withdrawAmt), "Dai Transfer failed");
}
}
}