Withdraw NFT

Definition: Loopring L2 withdraw NFT to Ethereum L1

Step 1. getAccount

const {accInfo} = await LoopringAPI.exchangeAPI.getAccount({
  owner: LOOPRING_EXPORTED_ACCOUNT.address,
});
console.log("accInfo:", accInfo);

Step 2. eddsaKey

const eddsaKey = await signatureKeyPairMock(accInfo);
console.log("eddsaKey:", eddsaKey.sk);

Step 3. apiKey

const {apiKey} = await LoopringAPI.userAPI.getUserApiKey(
  {
    accountId: accInfo.accountId,
  },
  eddsaKey.sk
);
console.log("apiKey:", apiKey);

Step 4. storageId

const storageId = await LoopringAPI.userAPI.getNextStorageId(
  {
    accountId: accInfo.accountId,
    sellTokenId: LOOPRING_EXPORTED_ACCOUNT.nftTokenId,
  },
  apiKey
);
console.log("storageId:", storageId);

//Step 5. getUserNFTBalances
const {userNFTBalances} = await LoopringAPI.userAPI.getUserNFTBalances(
  {accountId: LOOPRING_EXPORTED_ACCOUNT.accountId},
  apiKey
);
const tokenInfo = userNFTBalances.find(
  (item) =>
    item.tokenAddress?.toLowerCase() ===
    LOOPRING_EXPORTED_ACCOUNT.nftTokenAddress.toLowerCase() &&
    item.nftId &&
    web3.utils.hexToNumberString(item.nftId) ===
    LOOPRING_EXPORTED_ACCOUNT.nftTokenId.toString()
);

Step 5. fee

const fee = await LoopringAPI.userAPI.getNFTOffchainFeeAmt(
  {
    accountId: accInfo.accountId,
    requestType: sdk.OffchainNFTFeeReqType.NFT_WITHDRAWAL,
    tokenAddress:  LOOPRING_EXPORTED_ACCOUNT.nftTokenAddress,
    deployInWithdraw:
      tokenInfo?.deploymentStatus === DEPLOYMENT_STATUS.NOT_DEPLOYED, // when token is not deploy the fee is diff
  },
  apiKey
);
console.log("fee:", fee);

Step 6. withdraw

const response = await LoopringAPI.userAPI.submitNFTWithdraw({
  request: {
    exchange: LOOPRING_EXPORTED_ACCOUNT.exchangeAddress,
    accountId: LOOPRING_EXPORTED_ACCOUNT.accountId,
    counterFactualInfo: undefined,
    hashApproved: "",
    maxFee: {
      tokenId: TOKEN_INFO.tokenMap["LRC"].tokenId,
      amount: fee.fees["LRC"].fee ?? "9400000000000000000",
    },
    minGas: 0,
    owner: LOOPRING_EXPORTED_ACCOUNT.address,
    to: LOOPRING_EXPORTED_ACCOUNT.address,
    storageId: 0,
    token: {
      tokenId: LOOPRING_EXPORTED_ACCOUNT.nftTokenId,
      nftData: LOOPRING_EXPORTED_ACCOUNT.nftData,
      amount: "1",
    },
    validUntil: 0,
  },
  web3,
  chainId: sdk.ChainId.GOERLI,
  walletType: sdk.ConnectorNames.MetaMask,
  eddsaKey: eddsaKey.sk,
  apiKey,
});
console.log("response:", response);