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add WooFi V2 Mixin (#644)

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Elyas 2023-01-23 20:48:27 -05:00 committed by GitHub
parent 6fd269db34
commit b613de1547
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1 changed files with 17 additions and 46 deletions
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63
contracts/zero-ex/contracts/src/transformers/bridges/mixins/MixinWOOFi.sol
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@ -24,29 +24,22 @@ import "@0x/contracts-utils/contracts/src/v06/LibSafeMathV06.sol";
/// @dev WooFI pool interface.
interface IWooPP {
function quoteToken() external view returns (address);
function sellBase(
address baseToken,
uint256 baseAmount,
uint256 minQuoteAmount,
/// @notice Swap `fromToken` to `toToken`.
/// @param fromToken the from token
/// @param toToken the to token
/// @param fromAmount the amount of `fromToken` to swap
/// @param minToAmount the minimum amount of `toToken` to receive
/// @param to the destination address
/// @param rebateTo the rebate address (optional, can be 0)
/// @return realToAmount the amount of toToken to receive
function swap(
address fromToken,
address toToken,
uint256 fromAmount,
uint256 minToAmount,
address to,
address rebateTo
) external returns (uint256 quoteAmount);
function sellQuote(
address baseToken,
uint256 quoteAmount,
uint256 minBaseAmount,
address to,
address rebateTo
) external returns (uint256 baseAmount);
/// @dev Query the amount for selling the base token amount.
/// @param baseToken the base token to sell
/// @param baseAmount the amount to sell
/// @return quoteAmount the swapped quote amount
function querySellBase(address baseToken, uint256 baseAmount) external view returns (uint256 quoteAmount);
) external payable returns (uint256 realToAmount);
}
contract MixinWOOFi {
@ -57,39 +50,17 @@ contract MixinWOOFi {
// solhint-disable-next-line const-name-snakecase
address constant rebateAddress = 0xBfdcBB4C05843163F491C24f9c0019c510786304;
// /// @dev Swaps an exact amount of input tokens for as many output tokens as possible.
// /// @param _amountIn Amount of input tokens to send
// /// @param _minAmountOut The minimum amount of output tokens that must be received for the transaction
// /// not to revert
// /// @param _tokenIn Input token
// /// @param _tokenOut Output token
// /// @param _to recipient of tokens
// /// @param pool WOOFi pool where the swap will happen
function _tradeWOOFi(
IERC20TokenV06 sellToken,
IERC20TokenV06 buyToken,
uint256 sellAmount,
bytes memory bridgeData
) public returns (uint256 boughtAmount) {
IWooPP _pool = abi.decode(bridgeData, (IWooPP));
IWooPP _router = abi.decode(bridgeData, (IWooPP));
uint256 beforeBalance = buyToken.balanceOf(address(this));
sellToken.approveIfBelow(address(_pool), sellAmount);
sellToken.approveIfBelow(address(_router), sellAmount);
_swap(sellAmount, address(sellToken), address(buyToken), _pool);
boughtAmount = buyToken.balanceOf(address(this)).safeSub(beforeBalance);
}
function _swap(uint256 _amountIn, address _tokenIn, address _tokenOut, IWooPP pool) internal {
address quoteToken = pool.quoteToken();
if (_tokenIn == quoteToken) {
pool.sellQuote(_tokenOut, _amountIn, 1, address(this), rebateAddress);
} else if (_tokenOut == quoteToken) {
pool.sellBase(_tokenIn, _amountIn, 1, address(this), rebateAddress);
} else {
uint256 quoteAmount = pool.sellBase(_tokenIn, _amountIn, 0, address(this), rebateAddress);
IERC20TokenV06(pool.quoteToken()).approveIfBelow(address(pool), quoteAmount);
pool.sellQuote(_tokenOut, quoteAmount, 1, address(this), rebateAddress);
}
boughtAmount = _router.swap(address(sellToken), address(buyToken), sellAmount, 0, address(this), rebateAddress);
}
}