mirror of
https://github.com/Instadapp/dsa-connectors.git
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149 lines
3.7 KiB
Solidity
149 lines
3.7 KiB
Solidity
//SPDX-License-Identifier: MIT
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pragma solidity ^0.7.6;
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pragma abicoder v2;
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/**
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* @title Uniswap v3 swap.
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* @dev Decentralized Exchange.
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*/
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import {TokenInterface} from "../../../common/interfaces.sol";
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import {Helpers} from "./helpers.sol";
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import {Events} from "./events.sol";
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import "./interface.sol";
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abstract contract UniswapResolver is Helpers, Events {
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/**
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* @dev Buy Function
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* @notice Swap token(sellAddr) with token(buyAddr), buy token with minimum sell token
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* @param buyData Data input for the buy action
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*/
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function buy(
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BuyInfo memory buyData
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)
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external
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payable
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returns (string memory _eventName, bytes memory _eventParam)
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{
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uint256 _buyAmt = getUint(buyData.getId, buyData.buyAmt);
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(
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TokenInterface _buyAddr,
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TokenInterface _sellAddr
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) = changeMaticAddress(buyData.buyAddr, buyData.sellAddr);
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uint _slippageAmt = convert18ToDec(_sellAddr.decimals(),
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wmul(buyData.unitAmt, convertTo18(_buyAddr.decimals(), _buyAmt))
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);
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require(_slippageAmt >= buyData.expectedAmt, "Too much slippage");
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bool isMatic = address(_sellAddr) == wmaticAddr;
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convertMaticToWmatic(isMatic, _sellAddr, uint256(-1));
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approve(_sellAddr, address(swapRouter), uint256(-1));
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ISwapRouter.ExactOutputSingleParams memory params;
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{
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params = ISwapRouter.ExactOutputSingleParams({
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tokenIn: buyData.sellAddr,
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tokenOut: buyData.buyAddr,
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fee: buyData.fee,
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recipient: address(this),
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deadline: block.timestamp + 1,
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amountOut: _buyAmt,
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amountInMaximum: buyData.expectedAmt,
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sqrtPriceLimitX96: 0
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});
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}
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uint256 _sellAmt = swapRouter.exactOutputSingle(params);
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isMatic = address(_buyAddr) == wmaticAddr;
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convertWmaticToMatic(isMatic, _buyAddr, _buyAmt);
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setUint(buyData.setId, _sellAmt);
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_eventName = "LogBuy(address,address,uint256,uint256,uint256,uint256)";
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_eventParam = abi.encode(
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buyData.buyAddr,
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buyData.sellAddr,
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_buyAmt,
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_sellAmt,
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buyData.getId,
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buyData.setId
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);
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}
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/**
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* @dev Sell Function
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* @notice Swap token(sellAddr) with token(buyAddr), sell token to get maximum amount of buy token
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* @param buyAddr token to be bought
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* @param sellAddr token to be sold
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* @param fee pool fees for buyAddr-sellAddr token pair
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* @param sellAmt amount of token to be sold
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* @param getId Id to get sellAmount
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* @param setId Id to store buyAmount
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*/
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function sell(
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address buyAddr,
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address sellAddr,
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uint24 fee,
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uint256 sellAmt,
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uint256 getId,
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uint256 setId
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)
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external
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payable
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returns (string memory _eventName, bytes memory _eventParam)
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{
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uint256 _sellAmt = getUint(getId, sellAmt);
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(
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TokenInterface _buyAddr,
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TokenInterface _sellAddr
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) = changeMaticAddress(buyAddr, sellAddr);
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if (_sellAmt == uint256(-1)) {
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_sellAmt = sellAddr == maticAddr
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? address(this).balance
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: _sellAddr.balanceOf(address(this));
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}
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bool isMatic = address(_sellAddr) == wmaticAddr;
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convertMaticToWmatic(isMatic, _sellAddr, _sellAmt);
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approve(_sellAddr, address(swapRouter), _sellAmt);
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ISwapRouter.ExactInputSingleParams memory params;
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{
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params = ISwapRouter.ExactInputSingleParams({
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tokenIn: sellAddr,
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tokenOut: buyAddr,
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fee: fee,
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recipient: address(this),
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deadline: block.timestamp + 1,
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amountIn: _sellAmt,
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amountOutMinimum: 0,
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sqrtPriceLimitX96: 0
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});
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}
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uint256 _buyAmt = swapRouter.exactInputSingle(params);
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isMatic = address(_buyAddr) == wmaticAddr;
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convertWmaticToMatic(isMatic, _buyAddr, _buyAmt);
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setUint(setId, _buyAmt);
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_eventName = "LogSell(address,address,uint256,uint256,uint256,uint256)";
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_eventParam = abi.encode(
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buyAddr,
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sellAddr,
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_buyAmt,
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_sellAmt,
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getId,
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setId
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);
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}
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}
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contract ConnectV2UniswapV3Polygon is UniswapResolver {
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string public constant name = "UniswapV3-v1";
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}
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