How to send diff tokens with wagmi and metamask ?

[victorpavlenko]

I configured everything exactly according to the docs, but in my case the user can send:

• ETH
• USDT:BEP20
• USDT:ETH20
• USDC:BEP20
• USDC:ERC20
• USDC:MATIC

In general, I setup all chains [mainnet, bsc, polygon], I also made auto-detection of the network, depending on the selected blockhain.
And what about the token? Should I change something else besides decimal to send for example USDT?
Or just update chain and decimal?

PLZ HELP This is my first encounter with Blockchain.

const { crypto_address, crypto_amount, gateway, blockchain } = invoiceInfo;

const currentCrypto = (gateway === "USDT" || gateway === "USDC") ? CRYPTO[gateway][blockchain] : CRYPTO[gateway];
    
const [debouncedTo] = useDebounce(crypto_address, 500);
const [debouncedAmount] = useDebounce(crypto_amount, 500);
    
const { chain } = useNetwork()
const { chains, pendingChainId, switchNetwork } = useSwitchNetwork()

const { config, error: prepareError } = usePrepareSendTransaction({
    request: {
        to: debouncedTo,
        value: debouncedAmount ? utils.parseUnits(`${parseFloat(debouncedAmount)}`, currentCrypto.decimals) : undefined,
    },
});

const { error, sendTransaction } = useSendTransaction(config);

const { address, connector, isConnected } = useAccount();

const { data: ensName } = useEnsName({ address });
const { connectAsync, error: connectedError, connectors, isLoading, pendingConnector } = useConnect();

const data = useConnect();
const { disconnect } = useDisconnect();

const { isLoading: LOADING, isSuccess } = useWaitForTransaction({hash: data?.hash, });

[denvradiy]

Hi!

did you solve your issue?

[victorpavlenko]

Yes I did, but I was just starting to figure it out back then so I can't even understand my own question now lol.
Everything is extremely simple.

[victorpavlenko]

address: currentCrypto.contract 
abi: currentCrypto.abi
functionName: "transfer"
args: [addressTo, amount]

This is config to prepare contact for any token u need.
You can find contact address and abi for example on etherscan.io

[DimeRoyal]

Hello, Can you tell me what is the issue here, I am trying to make a transaction of USDT. Plz help
Error
Transaction failed: ContractFunctionExecutionError: Missing or invalid parameters. Double check you have provided the correct parameters. URL: https://cloudflare-eth.com Request body: {"method":"eth_call","params":[{"data":"0xa9059cbb000000000000000000000000051acf8d69a18d6a6e4dd063b39501e69704ac5000000000000000000000000000000000000000000000000000000000000003e8","from":"0xef7586E34A69E261Aa313EBF360DC0510455fd05","to":"0xdAC17F958D2ee523a2206206994597C13D831ec7"},"latest"]} Raw Call Arguments: from: 0xef7586E34A69E261Aa313EBF360DC0510455fd05 to: 0xdAC17F958D2ee523a2206206994597C13D831ec7 data: 0xa9059cbb000000000000000000000000051acf8d69a18d6a6e4dd063b39501e69704ac5000000000000000000000000000000000000000000000000000000000000003e8 Contract Call: address: 0xdAC17F958D2ee523a2206206994597C13D831ec7 function: transfer(address to, uint256 amount) args: (0x051ACf8d69a18d6a6e4Dd063B39501e69704Ac50, 1000) sender: 0xef7586E34A69E261Aa313EBF360DC0510455fd05 Docs: https://viem.sh/docs/contract/simulateContract Details: invalid opcode: INVALID Version: [email protected]

`const USDT_ABI = [
{
type: 'function',
name: 'transfer',
stateMutability: 'nonpayable',
inputs: [
{ name: 'to', type: 'address' },
{ name: 'amount', type: 'uint256' },
],
outputs: [{ name: '', type: 'bool' }],
},
];

const usdtContractAddress = '0xdAC17F958D2ee523a2206206994597C13D831ec7';

const recipient = ref('');
const amount = ref(0);

const { connect } = useConnect();
const { address, isConnected } = useAccount();
const connected = computed(() => isConnected.value);

const {
writeContractAsync,
isPending,
isSuccess,
isError,
failureReason,
} = useWriteContract();

async function connectToWallet() {
try {
await connect({ connector: injected() });
alert('MetaMask connected successfully!');
} catch (error) {
console.error('Failed to connect MetaMask:', error);
alert('Error connecting to MetaMask');
}
}

async function sendTransaction() {
if (!connected.value) {
alert('Please connect to MetaMask first.');
return;
}

try {
if (!/^0x[a-fA-F0-9]{40}$/.test(recipient.value)) {
alert('Invalid recipient address');
return;
}

if (Number(amount.value) <= 0) {
  alert('Amount must be greater than 0');
  return;
}

// Send the transaction
const tx = await writeContractAsync({
  address: usdtContractAddress,
  abi: USDT_ABI,
  functionName: 'transfer',
  args: [recipient.value, BigInt(amount.value * 10 ** 6)], // USDT has 6 decimals
  chainId: 1, // Ethereum Mainnet
});

console.log('Transaction sent:', tx);
alert('Transaction successfully sent. Waiting for confirmation...');

} catch (error) {
console.error('Transaction failed:', error);
alert(Transaction failed: ${error.message || 'Unknown error'});
}
}`