76aa419320
- CCIP/trustless bridge contracts, GRU tokens, DEX/PMM tests, reserve vault. - Token-aggregation service routes, planner, chain config, relay env templates. - Config snapshots and multi-chain deployment markdown updates. - gitignore services/btc-intake/dist/ (tsc output); do not track dist. Run forge build && forge test before deploy (large solc graph). Made-with: Cursor
65 lines
2.2 KiB
Solidity
65 lines
2.2 KiB
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.20;
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import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
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import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
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import {ISwapRouter} from "../bridge/trustless/interfaces/ISwapRouter.sol";
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/**
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* @title UniswapV3ExternalUnwinder
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* @notice External unwind adapter for quote-push workflows using the Uniswap V3 SwapRouter.
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* @dev `data` is optional:
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* - `abi.encode(uint24 fee)` for exactInputSingle
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* - `abi.encode(bytes path)` for exactInput multi-hop path
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*/
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contract UniswapV3ExternalUnwinder {
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using SafeERC20 for IERC20;
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address public immutable router;
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error BadParams();
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constructor(address router_) {
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router = router_;
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}
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function unwind(address tokenIn, address tokenOut, uint256 amountIn, uint256 minAmountOut, bytes calldata data)
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external
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returns (uint256 amountOut)
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{
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if (tokenIn == address(0) || tokenOut == address(0) || tokenIn == tokenOut) revert BadParams();
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if (amountIn == 0) revert BadParams();
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IERC20(tokenIn).safeTransferFrom(msg.sender, address(this), amountIn);
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IERC20(tokenIn).forceApprove(router, amountIn);
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if (data.length == 32) {
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uint24 fee = abi.decode(data, (uint24));
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amountOut = ISwapRouter(router).exactInputSingle(
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ISwapRouter.ExactInputSingleParams({
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tokenIn: tokenIn,
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tokenOut: tokenOut,
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fee: fee,
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recipient: msg.sender,
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deadline: block.timestamp + 300,
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amountIn: amountIn,
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amountOutMinimum: minAmountOut,
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sqrtPriceLimitX96: 0
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})
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);
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return amountOut;
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}
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bytes memory path = abi.decode(data, (bytes));
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amountOut = ISwapRouter(router).exactInput(
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ISwapRouter.ExactInputParams({
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path: path,
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recipient: msg.sender,
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deadline: block.timestamp + 300,
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amountIn: amountIn,
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amountOutMinimum: minAmountOut
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})
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);
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}
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}
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