52 lines
2.1 KiB
Solidity
52 lines
2.1 KiB
Solidity
/*
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Copyright 2020 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 {IDepth} from "../intf/IDepth.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
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contract CurveUnderlyingAdapter is IDODOAdapter {
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using SafeMath for uint;
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//fromToken == token[0], underlying
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function sellBase(address to, address pool, bytes memory moreInfo) external override {
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(address fromToken, address toToken, int128 i, int128 j) = abi.decode(moreInfo, (address, address, int128, int128));
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require(fromToken == IDepth(pool).underlying_coins(i), 'DepthAdapter: WRONG_TOKEN');
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require(toToken == IDepth(pool).underlying_coins(j), 'DepthAdapter: WRONG_TOKEN');
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uint256 sellBaseAmount = IERC20(fromToken).balanceOf(address(this));
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// approve
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IERC20(fromToken).approve(pool, sellBaseAmount);
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// swap
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IDepth(pool).exchange_underlying(i, j, sellBaseAmount, 0);
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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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//fromToken == token[1], underlying
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function sellQuote(address to, address pool, bytes memory moreInfo) external override {
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(address fromToken, address toToken, int128 i, int128 j) = abi.decode(moreInfo, (address, address, int128, int128));
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require(fromToken == IDepth(pool).underlying_coins(i), 'DepthAdapter: WRONG_TOKEN');
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require(toToken == IDepth(pool).underlying_coins(j), 'DepthAdapter: WRONG_TOKEN');
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uint256 sellQuoteAmount = IERC20(toToken).balanceOf(address(this));
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// approve
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IERC20(toToken).approve(pool, sellQuoteAmount);
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// swap
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IDepth(pool).exchange_underlying(i, j, sellQuoteAmount, 0);
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if(to != address(this)) {
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SafeERC20.safeTransfer(IERC20(fromToken), to, IERC20(fromToken).balanceOf(address(this)));
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}
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}
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} |