1inch Aggregator integration

Smart Contracts
1

I'm trying to integrate 1inch AggregationRouterV4 into my contract but the transaction always get reverted
The approach i'm following is :

  1. get swap data from 1inch api
 const swapParams: SwapParams = {
    fromTokenAddress: usdtAddress,
    toTokenAddress: usdcAddress,
    amount: amount,
    fromAddress: MySwapContractAddress,
    destReceiver: destReceiver,
    slippage: 3,
    disableEstimate: true,
  };

  const data: SwapResponse = await swap(chainId, swapParams);

  const OneInchRouter = await ethers.getContractFactory(
    "MockAggregationRouterV4"
  );
  const decodedData = OneInchRouter.interface.decodeFunctionData(
    "swap",
    data.tx.data
  );ere

  1. Approve source token for MySwapContract

  2. Do the actual swap

  const contract = await ethers.getContractAt("MySwapContract", MySwapContractAddress);
  const gasEstimate = await contract
    .connect(deployer)
    .swap(decodedData.caller, decodedData.desc, decodedData.data);

Swap function code

   function swap(
        IAggregationExecutor caller,
        SwapDescription memory desc,
        bytes memory data
    ) external payable {
        bool isNotNative = !_isNative(desc.srcToken);

        if (isNotNative) {
            desc.srcToken.safeTransferFrom(
                _msgSender(),
                address(this),
                desc.amount
            );
            desc.srcToken.approve(_INCH_ROUTER, desc.amount);
        }

        (uint256 returnAmount, uint256 spentAmount, ) = IAggregationRouterV4(
            _INCH_ROUTER
        ).swap{value: msg.value}(caller, desc, data);

        if (isNotNative) {
            uint256 unspentAmount = desc.srcToken.balanceOf(address(this));
            if (unspentAmount > 0)
                desc.srcToken.safeTransfer(_msgSender(), unspentAmount);
        } else {
            uint256 unspentAmount = address(this).balance;
            if (unspentAmount > 0)
                _safeNativeTransfer(_msgSender(), unspentAmount);
        }

        emit Swap(_msgSender(), desc.amount, spentAmount, returnAmount);
    }

The errr which i get

Screenshot 2022-05-14 at 1.22.15 PM
Screenshot 2022-05-14 at 1.22.15 PM1920×982 339 KB

Any help regarding this is appreciated.

2

Hi, welcome to the community! :wave:

Is there a failed transaction hash?

3

the tx hash is https://polygonscan.com/tx/0x31c31fc2d1ef92823507b38474459a47b47e447fbd89437248ce39f71a5a40fd
i have also verified the contract

the api which i am using is this

const url = `https://api.1inch.io/v4.0/${chainId}/swap?fromTokenAddress=${swapParams.fromTokenAddress}&toTokenAddress=${swapParams.toTokenAddress}&amount=${swapParams.amount}&fromAddress=${swapParams.fromAddress}&destReceiver=${swapParams.destReceiver}&slippage=${swapParams.slippage}&disableEstimate=${swapParams.disableEstimate}

u can use this for decoding 1inch respose.tx.data

  const iface = new ethers.utils.Interface([
   "function swap(address,tuple(address,address,address,address,uint256,uint256,uint256,bytes),bytes)",
  ]);

   const decodedData = iface.decodeFunctionData("swap", data.tx.data);
  console.log(decodedData.caller, decodedData.desc, decodedData.data);
4

Found the solution, interface issue from my end

5

I have the same problem as you, how did you solve it?

7

For 1inchv4 ethereum and other chains have different contract. So use the correct interface here.

8

pls share for me about code of MockAggregationRouterV4 to decodeFunctionData from data.tx.data. thank u

9

@DANTE can you please share the code of calling swap function of 1inch in your smart contract?