Instadapp/smart-contract
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getBest rate read done

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This commit is contained in:
Samyak Jain 2019-06-24 02:10:38 +05:30
parent 80d2f31c61
commit db05eaaabb
1 changed files with 36 additions and 2 deletions
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38
contracts/ProxyLogics/InstaSave.sol
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@ -184,6 +184,13 @@ contract Helpers is DSMath {
kyber = 0x818E6FECD516Ecc3849DAf6845e3EC868087B755; kyber = 0x818E6FECD516Ecc3849DAf6845e3EC868087B755;
} }
/**
* @dev get kyber proxy address
*/
function getAddressEth2Dai() public pure returns (address eth2Dai) {
eth2Dai = 0x39755357759cE0d7f32dC8dC45414CCa409AE24e;
}
/** /**
* @dev get admin address * @dev get admin address
*/ */
@ -362,6 +369,28 @@ contract GetDetails is MakerHelpers {
); );
} }
/**
* @param isBest 0 is ETH2DAI, 1 is Kyber
*/
function getBest(address src, address dest, uint srcAmt) public view returns(uint bestRate, uint isBest) {
address srcAdd = src;
address destAdd = dest;
(uint kyberPrice,) = KyberInterface(getAddressKyber()).getExpectedRate(srcAdd, destAdd, srcAmt);
if (srcAdd == getAddressETH()) {
srcAdd = getAddressWETH();
} else {
destAdd = getAddressWETH();
}
uint eth2DaiPrice = Eth2DaiInterface(getAddressEth2Dai()).getBuyAmount(srcAdd, destAdd, srcAmt);
if (eth2DaiPrice > kyberPrice) {
bestRate = eth2DaiPrice;
isBest = 0;
} else {
bestRate = kyberPrice;
isBest = 1;
}
}
function getLeverage( function getLeverage(
uint cdpID, uint cdpID,
uint daiToSwap uint daiToSwap
@ -401,7 +430,7 @@ contract GetDetails is MakerHelpers {
if (ethToSwap < colToFree) { if (ethToSwap < colToFree) {
colToFree = ethToSwap; colToFree = ethToSwap;
} }
(uint expectedRate,) = KyberInterface(getAddressKyber()).getExpectedRate(getAddressETH(), getAddressDAI(), colToFree); (uint expectedRate,) = getBest(getAddressETH(), getAddressDAI(), colToFree);
uint expectedDAI = wmul(colToFree, expectedRate); uint expectedDAI = wmul(colToFree, expectedRate);
if (expectedDAI < daiDebt) { if (expectedDAI < daiDebt) {
finalEthCol = sub(ethCol, colToFree); finalEthCol = sub(ethCol, colToFree);
@ -435,7 +464,7 @@ contract GetDetails is MakerHelpers {
if (daiToSwap < debtToBorrow) { if (daiToSwap < debtToBorrow) {
debtToBorrow = daiToSwap; debtToBorrow = daiToSwap;
} }
(uint expectedRate,) = KyberInterface(getAddressKyber()).getExpectedRate(getAddressDAI(), getAddressETH(), debtToBorrow); (uint expectedRate,) = getBest(getAddressDAI(), getAddressETH(), debtToBorrow);
uint expectedETH = wmul(debtToBorrow, expectedRate); uint expectedETH = wmul(debtToBorrow, expectedRate);
if (ethCol != 0) { if (ethCol != 0) {
finalEthCol = add(ethCol, expectedETH); finalEthCol = add(ethCol, expectedETH);
@ -453,6 +482,11 @@ contract GetDetails is MakerHelpers {
} }
contract SaveResolver is GetDetails {
}
contract Save is SaveResolver { contract Save is SaveResolver {
/** /**