45 lines
1.5 KiB
Solidity
45 lines
1.5 KiB
Solidity
/*
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Copyright 2021 DODO ZOO.
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SPDX-License-Identifier: Apache-2.0
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*/
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pragma solidity 0.6.9;
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import {IDODOAdapter} from "../intf/IDODOAdapter.sol";
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import {ICurve} from "../intf/ICurve.sol";
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import {IERC20} from "../../intf/IERC20.sol";
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import {SafeMath} from "../../lib/SafeMath.sol";
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import {UniversalERC20} from "../lib/UniversalERC20.sol";
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import {SafeERC20} from "../../lib/SafeERC20.sol";
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// for two tokens; to adapter like dodo V1
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contract CurveAdapter is IDODOAdapter {
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using SafeMath for uint;
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using UniversalERC20 for IERC20;
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function _curveSwap(address to, address pool, bytes memory moreInfo) internal {
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(bool noLending, address fromToken, address toToken, int128 i, int128 j) = abi.decode(moreInfo, (bool, address, address, int128, int128));
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uint256 sellAmount = IERC20(fromToken).balanceOf(address(this));
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// approve
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IERC20(fromToken).universalApproveMax(pool, sellAmount);
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// swap
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if(noLending) {
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ICurve(pool).exchange(i, j, sellAmount, 0);
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} else {
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ICurve(pool).exchange_underlying(i, j, sellAmount, 0);
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}
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if(to != address(this)) {
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SafeERC20.safeTransfer(IERC20(toToken), to, IERC20(toToken).balanceOf(address(this)));
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}
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}
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function sellBase(address to, address pool, bytes memory moreInfo) external override {
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_curveSwap(to, pool, moreInfo);
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}
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function sellQuote(address to, address pool, bytes memory moreInfo) external override {
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_curveSwap(to, pool, moreInfo);
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}
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} |