mirror of
https://github.com/Instadapp/smart-contract.git
synced 2024-07-29 22:08:07 +00:00
old InstaSave
This commit is contained in:
Samyak Jain
parent
c964ff497a
commit
f390caacd5
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@ -43,6 +43,7 @@ interface UniswapExchange {
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) external returns (uint256 tokensSold);
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}
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interface TokenInterface {
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function allowance(address, address) external view returns (uint);
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function balanceOf(address) external view returns (uint);
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@ -71,23 +72,6 @@ interface KyberInterface {
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) external view returns (uint, uint);
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}
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interface Eth2DaiInterface {
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function getBuyAmount(address dest, address src, uint srcAmt) external view returns(uint);
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function getPayAmount(address src, address dest, uint destAmt) external view returns (uint);
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function sellAllAmount(
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address src,
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uint srcAmt,
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address dest,
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uint minDest
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) external returns (uint destAmt);
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function buyAllAmount(
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address dest,
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uint destAmt,
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address src,
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uint maxSrc
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) external returns (uint srcAmt);
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}
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contract DSMath {
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@ -162,13 +146,6 @@ contract Helpers is DSMath {
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eth = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
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}
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/**
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* @dev get ethereum address for trade
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*/
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function getAddressWETH() public pure returns (address weth) {
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weth = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
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}
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/**
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* @dev get ethereum address for trade
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*/
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@ -183,13 +160,6 @@ contract Helpers is DSMath {
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kyber = 0x818E6FECD516Ecc3849DAf6845e3EC868087B755;
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}
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/**
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* @dev get kyber proxy address
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*/
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function getAddressEth2Dai() public pure returns (address eth2Dai) {
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eth2Dai = 0x39755357759cE0d7f32dC8dC45414CCa409AE24e;
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}
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/**
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* @dev get admin address
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*/
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@ -266,7 +236,6 @@ contract MakerHelpers is Helpers {
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ink = rmul(ink, tub.per()) <= jam ? ink : ink - 1;
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tub.free(cup, ink);
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setAllowance(weth, tubAddr);
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setAllowance(peth, tubAddr);
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tub.exit(ink);
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@ -389,29 +358,6 @@ contract GetDetails is MakerHelpers {
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);
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}
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/**
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* @param isBest 0 is ETH2DAI, 1 is Kyber
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*/
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function getBest(address src, address dest, uint srcAmt) public view returns(uint bestRate, uint isBest) {
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address srcAdd = src;
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address destAdd = dest;
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(uint kyberPrice,) = KyberInterface(getAddressKyber()).getExpectedRate(srcAdd, destAdd, srcAmt);
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kyberPrice = wmul(srcAmt, kyberPrice);
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if (srcAdd == getAddressETH()) {
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srcAdd = getAddressWETH();
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} else {
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destAdd = getAddressWETH();
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}
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uint eth2DaiPrice = Eth2DaiInterface(getAddressEth2Dai()).getBuyAmount(destAdd, srcAdd, srcAmt);
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if (eth2DaiPrice > kyberPrice) {
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bestRate = eth2DaiPrice;
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isBest = 0;
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} else {
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bestRate = kyberPrice;
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isBest = 1;
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}
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}
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function checkSave(
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uint ethCol,
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uint daiDebt,
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@ -431,10 +377,11 @@ contract GetDetails is MakerHelpers {
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if (ethToSwap < colToFree) {
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colToFree = ethToSwap;
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}
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(uint expectedRate,) = getBest(getAddressETH(), getAddressDAI(), colToFree);
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if (expectedRate < daiDebt) {
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(uint expectedRate,) = KyberInterface(getAddressKyber()).getExpectedRate(getAddressETH(), getAddressDAI(), colToFree);
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uint expectedDAI = wmul(colToFree, expectedRate);
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if (expectedDAI < daiDebt) {
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finalEthCol = sub(ethCol, colToFree);
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finalDaiDebt = sub(daiDebt, expectedRate);
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finalDaiDebt = sub(daiDebt, expectedDAI);
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finalColToUSD = wmul(finalEthCol, usdPerEth);
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canSave = true;
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} else {
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@ -464,9 +411,10 @@ contract GetDetails is MakerHelpers {
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if (daiToSwap < debtToBorrow) {
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debtToBorrow = daiToSwap;
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}
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(uint expectedRate,) = getBest(getAddressDAI(), getAddressETH(), debtToBorrow);
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(uint expectedRate,) = KyberInterface(getAddressKyber()).getExpectedRate(getAddressDAI(), getAddressETH(), debtToBorrow);
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uint expectedETH = wmul(debtToBorrow, expectedRate);
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if (ethCol != 0) {
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finalEthCol = add(ethCol, expectedRate);
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finalEthCol = add(ethCol, expectedETH);
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finalDaiDebt = add(daiDebt, debtToBorrow);
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finalColToUSD = wmul(finalEthCol, usdPerEth);
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canLeverage = true;
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@ -481,153 +429,7 @@ contract GetDetails is MakerHelpers {
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}
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contract SaveResolver is GetDetails {
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/**
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* @param what 0 for ETH2DAI & 1 for Kyber
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*/
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event LogSwap(
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uint what,
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address src,
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uint srcAmt,
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address dest,
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uint destAmt
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);
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function saveSwap(uint srcAmt, uint daiDebt) internal returns (uint destAmt) {
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(,uint isBest) = getBest(getAddressETH(), getAddressDAI(), srcAmt);
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if (isBest == 0) {
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TokenInterface weth = TokenInterface(getAddressWETH());
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weth.deposit.value(srcAmt)();
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setAllowance(weth, getAddressEth2Dai());
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destAmt = Eth2DaiInterface(getAddressEth2Dai()).sellAllAmount(
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getAddressWETH(),
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srcAmt,
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getAddressDAI(),
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0
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);
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} else {
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destAmt = KyberInterface(getAddressKyber()).trade.value(srcAmt)(
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getAddressETH(),
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srcAmt,
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getAddressDAI(),
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address(this),
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daiDebt,
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0,
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getAddressAdmin()
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);
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}
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emit LogSwap(
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isBest,
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getAddressETH(),
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srcAmt,
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getAddressDAI(),
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destAmt
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);
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}
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// function loopSwap(uint srcAmt) internal returns (uint destAmt) {
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// (,uint isBest) = getBest(getAddressETH(), getAddressDAI(), srcAmt);
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// if (isBest == 0) {
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// setAllowance(TokenInterface(getAddressDAI()), getAddressEth2Dai());
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// destAmt = Eth2DaiInterface(getAddressEth2Dai()).sellAllAmount(
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// getAddressDAI(),
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// srcAmt,
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// getAddressWETH(),
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// 0
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// );
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// destAmt = recursiveloop(srcAmt, 0);
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// TokenInterface weth = TokenInterface(getAddressWETH());
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// setAllowance(weth, getSaiTubAddress());
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// weth.withdraw(destAmt);
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// } else {
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// setAllowance(TokenInterface(getAddressDAI()), getAddressKyber());
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// destAmt = KyberInterface(getAddressKyber()).trade.value(srcAmt)(
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// getAddressDAI(),
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// srcAmt,
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// getAddressETH(),
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// address(this),
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// 2**255,
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// 0,
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// getAddressAdmin()
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// );
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// }
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// emit LogSwap(
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// isBest,
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// getAddressDAI(),
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// srcAmt,
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// getAddressETH(),
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// destAmt
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// );
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// }
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function loopSwap(uint srcAmt, uint finalAmt, uint splitAmt) internal returns (uint destAmt) {
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// (,uint isBest) = getBest(getAddressETH(), getAddressDAI(), srcAmt);
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if (srcAmt > splitAmt) {
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uint nextSrc = srcAmt - splitAmt;
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uint swappedAmt = splitSwap(getAddressDAI(), getAddressETH(), splitAmt);
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// uint swappedAmt = Eth2DaiInterface(getAddressEth2Dai()).sellAllAmount(
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// getAddressDAI(),
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// 15000000000000000000000,
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// getAddressWETH(),
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// 0
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// );
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uint nextFinal = finalAmt + swappedAmt;
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destAmt = recursiveloop(nextSrc, nextFinal);
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} else {
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uint swappedAmt = Eth2DaiInterface(getAddressEth2Dai()).sellAllAmount(
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getAddressDAI(),
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srcAmt,
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getAddressWETH(),
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0
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);
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destAmt = finalAmt + swappedAmt;
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}
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}
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function recursiveloop(uint srcAmt, uint finalAmt) internal returns (uint destAmt) {
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if (srcAmt > 15000000000000000000000) {
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uint nextSrc = srcAmt - 15000000000000000000000;
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uint swappedAmt = Eth2DaiInterface(getAddressEth2Dai()).sellAllAmount(
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getAddressDAI(),
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15000000000000000000000,
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getAddressWETH(),
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0
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);
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uint nextFinal = finalAmt + swappedAmt;
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destAmt = recursiveloop(nextSrc, nextFinal);
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} else {
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uint swappedAmt = Eth2DaiInterface(getAddressEth2Dai()).sellAllAmount(
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getAddressDAI(),
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srcAmt,
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getAddressWETH(),
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0
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);
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destAmt = finalAmt + swappedAmt;
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}
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}
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function splitSwap(address src, address dest, uint srcAmt) internal returns (uint destAmt) {
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(,uint isBest) = getBest(getAddressETH(), getAddressDAI(), srcAmt);
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if (isBest)
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}
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function eth2DaiSwap() internal returns (uint destAmt) {
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}
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function uniswapSwap() internal returns (uint destAmt) {
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}
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function kyberSwap() internal returns (uint destAmt) {
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}
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}
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contract Save is SaveResolver {
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contract Save is GetDetails {
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/**
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* @param what 2 for SAVE & 3 for LEVERAGE
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@ -666,11 +468,16 @@ contract Save is SaveResolver {
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}
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uint thisBalance = address(this).balance;
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free(cdpID, colToFree);
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uint destAmt = saveSwap(colToFree, daiDebt);
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uint cut = wmul(destAmt, 2000000000000000);
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TokenInterface(getAddressDAI()).transfer(getAddressAdmin(), cut);
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uint wipeAmt = sub(destAmt, cut);
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wipe(cdpID, wipeAmt);
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uint destAmt = KyberInterface(getAddressKyber()).trade.value(colToFree)(
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getAddressETH(),
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colToFree,
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getAddressDAI(),
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address(this),
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daiDebt,
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0,
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getAddressAdmin()
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);
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wipe(cdpID, destAmt);
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if (thisBalance < address(this).balance) {
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uint balToLock = sub(address(this).balance, thisBalance);
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@ -700,10 +507,16 @@ contract Save is SaveResolver {
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debtToBorrow = daiToSwap;
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}
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draw(cdpID, debtToBorrow);
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uint cut = wmul(debtToBorrow, 2000000000000000);
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uint swapAmt = sub(debtToBorrow, cut);
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TokenInterface(getAddressDAI()).transfer(getAddressAdmin(), cut);
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uint destAmt = loopSwap(swapAmt);
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setAllowance(TokenInterface(getAddressDAI()), getAddressKyber());
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uint destAmt = KyberInterface(getAddressKyber()).trade.value(0)(
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getAddressDAI(),
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debtToBorrow,
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getAddressETH(),
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address(this),
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2**255,
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0,
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getAddressAdmin()
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);
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lock(cdpID, destAmt);
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emit LogLeverageCDP(cdpID, debtToBorrow, destAmt);
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