feat: add curve executor with router tests

Took 36 minutes


Took 2 minutes

foundry/src/executors/CurveExecutor.sol

@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: BUSL-1.1
+pragma solidity ^0.8.26;
+
+import "@interfaces/IExecutor.sol";
+import "@interfaces/ICurveRouter.sol";
+import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
+
+contract CurveExecutor is IExecutor {
+    using SafeERC20 for IERC20;
+
+    ICurveRouter public immutable curveRouter;
+
+    constructor(address _curveRouter) {
+        curveRouter = ICurveRouter(_curveRouter);
+    }
+
+    function swap(uint256 amountIn, bytes calldata data)
+        external
+        payable
+        returns (uint256)
+    {
+        CurveRouterParams memory params = _decodeData(data);
+        IERC20(params.route[0]).approve(address(curveRouter), amountIn);
+        return curveRouter.exchange(
+            params.route,
+            params.swapParams,
+            amountIn,
+            params.minAmountOut,
+            params.pools,
+            params.receiver
+        );
+    }
+
+    function _decodeData(bytes calldata data)
+        internal
+        pure
+        returns (CurveRouterParams memory params)
+    {
+        return abi.decode(data, (CurveRouterParams));
+    }
+}