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https://github.com/Instadapp/smart-contract.git
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uniswap trade with source completed
This commit is contained in:
Samyak
parent
e841c05041
commit
4c7b4ff34c
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@ -77,136 +77,8 @@ contract Trade is Registry {
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return uniswapMain.getExchange(_token);
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return uniswapMain.getExchange(_token);
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}
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}
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/*
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// Check required ETH Quantity to execute code
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* Uniswap's get expected rate function
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function _getToken(
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* @params:-
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* src - Token address to sell (for ETH it's "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee")
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* dest - Token address to buy (for ETH it's "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee")
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* srcAmtFixed - if Token to sell has fixed quantity then true else Token to sell should have fixed quantity to buy
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* srcDestAmt - if srcAmtFixed is true then quantity will be of src token else quantity will be of dest token
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*/
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// function getExpectedRateUniswap(address src, address dest, bool srcAmtFixed, uint srcDestAmt) external view returns (uint256) {
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// if (src == getAddress("eth")) {
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// // define uniswap exchange with dest address
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// UniswapExchange exchangeContract = UniswapExchange(_getExchangeAddress(dest));
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// if (srcAmtFixed) {
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// return exchangeContract.getEthToTokenInputPrice(srcDestAmt);
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// } else {
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// return exchangeContract.getEthToTokenOutputPrice(srcDestAmt);
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// }
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// } else if (dest == getAddress("eth")) {
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// // define uniswap exchange with src address
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// UniswapExchange exchangeContract = UniswapExchange(_getExchangeAddress(src));
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// if (srcAmtFixed) {
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// return exchangeContract.getTokenToEthInputPrice(srcDestAmt);
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// } else {
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// return exchangeContract.getTokenToEthOutputPrice(srcDestAmt);
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// }
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// } else {
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// UniswapExchange exchangeContractSrc = UniswapExchange(_getExchangeAddress(src));
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// UniswapExchange exchangeContractDest = UniswapExchange(_getExchangeAddress(dest));
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// if (srcAmtFixed) {
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// uint ethQty = exchangeContractSrc.getTokenToEthInputPrice(srcDestAmt);
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// return exchangeContractDest.getEthToTokenInputPrice(ethQty);
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// } else {
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// uint ethQty = exchangeContractDest.getTokenToEthInputPrice(srcDestAmt);
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// return exchangeContractSrc.getEthToTokenInputPrice(ethQty);
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// }
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// }
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// }
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function getExpectedRateSrcUniswap(address src, address dest, uint srcDestAmt) external view returns (uint256) {
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if (src == getAddress("eth")) {
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// define uniswap exchange with dest address
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UniswapExchange exchangeContract = UniswapExchange(_getExchangeAddress(dest));
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return exchangeContract.getEthToTokenInputPrice(srcDestAmt);
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} else if (dest == getAddress("eth")) {
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// define uniswap exchange with src address
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UniswapExchange exchangeContract = UniswapExchange(_getExchangeAddress(src));
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return exchangeContract.getTokenToEthInputPrice(srcDestAmt);
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} else {
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UniswapExchange exchangeContractSrc = UniswapExchange(_getExchangeAddress(src));
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UniswapExchange exchangeContractDest = UniswapExchange(_getExchangeAddress(dest));
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uint ethQty = exchangeContractSrc.getTokenToEthInputPrice(srcDestAmt);
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return exchangeContractDest.getEthToTokenInputPrice(ethQty);
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}
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}
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function getExpectedRateDestUniswap(address src, address dest, uint srcDestAmt) external view returns (uint256) {
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address eth = getAddress("eth");
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if (src == eth) {
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// define uniswap exchange with dest address
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UniswapExchange exchangeContract = UniswapExchange(_getExchangeAddress(dest));
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return exchangeContract.getEthToTokenOutputPrice(srcDestAmt);
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} else if (dest == eth) {
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// define uniswap exchange with src address
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UniswapExchange exchangeContract = UniswapExchange(_getExchangeAddress(src));
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return exchangeContract.getTokenToEthOutputPrice(srcDestAmt);
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} else {
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UniswapExchange exchangeContractSrc = UniswapExchange(_getExchangeAddress(src));
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UniswapExchange exchangeContractDest = UniswapExchange(_getExchangeAddress(dest));
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uint ethQty = exchangeContractDest.getTokenToEthInputPrice(srcDestAmt);
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return exchangeContractSrc.getEthToTokenInputPrice(ethQty);
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}
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}
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// function tradeUniswap(
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// address src, // token to sell
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// address dest, // token to buy
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// uint srcAmt, // amount of token for sell
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// uint destAmt, // amount of token to buy
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// bool srcAmtFixed, // if true src has fixed qty else dest has fixed qty
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// uint srcDestAmt,
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// uint minSlippage // % slippage of other token than the fixed one
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// ) public payable returns (uint) {
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// if (src == getAddress("eth")) {
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// UniswapExchange exchangeContract = UniswapExchange(_getExchangeAddress(dest));
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// // function ethToTokenSwapInput(uint256 min_tokens, uint256 deadline) external payable returns (uint256 tokens_bought);
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// if (srcAmtFixed) {
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// } else {
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// }
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// return exchangeContract.ethToTokenSwapInput()
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// } else if (dest == getAddress("eth")) {
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// UniswapExchange exchangeContract = UniswapExchange(_getExchangeAddress(src));
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// } else {
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// }
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// }
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function tradeSrcUniswap(
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address src, // token to sell
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address dest, // token to buy
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uint srcAmt, // amount of token for sell
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uint minDestAmt, // min dest token amount (slippage)
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uint deadline // time for this transaction to be valid
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) public payable returns (uint) {
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address eth = getAddress("eth");
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address user = msg.sender;
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uint ethQty = getToken(
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user,
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src,
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srcAmt,
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eth
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);
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if (src == eth) {
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UniswapExchange exchangeContract = UniswapExchange(_getExchangeAddress(dest));
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uint tokensBought = exchangeContract.ethToTokenSwapInput.value(ethQty)(minDestAmt, deadline);
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return tokensBought;
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} else if (dest == eth) {
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UniswapExchange exchangeContract = UniswapExchange(_getExchangeAddress(src));
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uint ethBought = exchangeContract.tokenToEthSwapInput(srcAmt, minDestAmt, deadline);
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return ethBought;
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} else {
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}
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}
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function getToken(
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address trader,
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address trader,
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address src,
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address src,
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uint srcAmt,
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uint srcAmt,
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@ -225,4 +97,87 @@ contract Trade is Registry {
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}
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}
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}
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}
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/**
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* @title Uniswap's get expected rate from source
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* @param src - Token address to sell (for ETH it's "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee")
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* @param dest - Token address to buy (for ETH it's "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee")
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* @param srcAmt - source token amount
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*/
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function getExpectedRateSrcUniswap(address src, address dest, uint srcAmt) external view returns (uint256) {
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if (src == getAddress("eth")) {
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// define uniswap exchange with dest address
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UniswapExchange exchangeContract = UniswapExchange(_getExchangeAddress(dest));
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return exchangeContract.getEthToTokenInputPrice(srcAmt);
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} else if (dest == getAddress("eth")) {
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// define uniswap exchange with src address
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UniswapExchange exchangeContract = UniswapExchange(_getExchangeAddress(src));
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return exchangeContract.getTokenToEthInputPrice(srcAmt);
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} else {
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UniswapExchange exchangeContractSrc = UniswapExchange(_getExchangeAddress(src));
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UniswapExchange exchangeContractDest = UniswapExchange(_getExchangeAddress(dest));
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uint ethQty = exchangeContractSrc.getTokenToEthInputPrice(srcAmt);
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return exchangeContractDest.getEthToTokenInputPrice(ethQty);
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}
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}
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/**
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* @title Uniswap's get expected rate from dest
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* @param src - Token address to sell (for ETH it's "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee")
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* @param dest - Token address to buy (for ETH it's "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee")
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* @param destAmt - dest token amount
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*/
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function getExpectedRateDestUniswap(address src, address dest, uint destAmt) external view returns (uint256) {
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address eth = getAddress("eth");
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if (src == eth) {
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// define uniswap exchange with dest address
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UniswapExchange exchangeContract = UniswapExchange(_getExchangeAddress(dest));
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return exchangeContract.getEthToTokenOutputPrice(destAmt);
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} else if (dest == eth) {
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// define uniswap exchange with src address
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UniswapExchange exchangeContract = UniswapExchange(_getExchangeAddress(src));
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return exchangeContract.getTokenToEthOutputPrice(destAmt);
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} else {
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UniswapExchange exchangeContractSrc = UniswapExchange(_getExchangeAddress(src));
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UniswapExchange exchangeContractDest = UniswapExchange(_getExchangeAddress(dest));
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uint ethQty = exchangeContractDest.getTokenToEthInputPrice(destAmt);
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return exchangeContractSrc.getEthToTokenInputPrice(ethQty);
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}
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}
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function tradeSrcUniswap(
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address src, // token to sell
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uint srcAmt, // amount of token for sell
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address dest, // token to buy
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uint minDestAmt, // min dest token amount (slippage)
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uint deadline // time for this transaction to be valid
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) public payable returns (uint) {
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address eth = getAddress("eth");
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address user = msg.sender;
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uint ethQty = _getToken(
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user,
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src,
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srcAmt,
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eth
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);
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if (src == eth) {
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UniswapExchange exchangeContract = UniswapExchange(_getExchangeAddress(dest));
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uint tokensBought = exchangeContract.ethToTokenTransferInput.value(ethQty)(minDestAmt, deadline, user);
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return tokensBought;
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} else if (dest == eth) {
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UniswapExchange exchangeContract = UniswapExchange(_getExchangeAddress(src));
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uint ethBought = exchangeContract.tokenToEthTransferInput(srcAmt, minDestAmt, deadline, user);
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return ethBought;
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} else {
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UniswapExchange exchangeContract = UniswapExchange(_getExchangeAddress(src));
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uint ethBought = exchangeContract.getTokenToEthInputPrice(srcAmt);
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uint minEthBought = ethBought.mul(98).div(100);
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uint tokensBought = exchangeContract.tokenToTokenTransferInput(srcAmt, minDestAmt, minEthBought, deadline, user, dest);
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return tokensBought;
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}
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}
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}
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}
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