Execute Transactions with Cosmos Libraries

import { useMemo } from "react";
import { useParaCosmjsProtoSigner, useParaCosmjsSignAndBroadcast } from "@getpara/react-sdk/cosmos";
import { SigningStargateClient, coins } from "@cosmjs/stargate";
import { MsgSend } from "cosmjs-types/cosmos/bank/v1beta1/tx";

const RPC_URL = "https://rpc.cosmos.directory/cosmoshub";

function CustomTransaction() {
  const { protoSigner, isLoading } = useParaCosmjsProtoSigner();

  const address = protoSigner?.address;

  const client = useMemo(
    () => protoSigner ? SigningStargateClient.connectWithSigner(RPC_URL, protoSigner) : undefined,
    [protoSigner]
  );

  const { signAndBroadcastAsync, isPending } = useParaCosmjsSignAndBroadcast(protoSigner, client);

  const executeCustomMessage = async () => {
    if (!protoSigner || !address) return;

    const msgSend = {
      typeUrl: "/cosmos.bank.v1beta1.MsgSend",
      value: MsgSend.fromPartial({
        fromAddress: address,
        toAddress: "cosmos1...",
        amount: coins(1000000, "uatom"),
      }),
    };

    const fee = {
      amount: coins(5000, "uatom"),
      gas: "200000",
    };

    try {
      const result = await signAndBroadcastAsync({
        messages: [msgSend],
        fee,
        memo: "Custom message via Para",
      });

      console.log("Transaction hash:", result.transactionHash);
      console.log("Code:", result.code);
    } catch (error) {
      console.error("Transaction failed:", error);
    }
  };

  if (isLoading) return <div>Loading...</div>;

  return (
    <div>
      <p>From: {address}</p>
      <button onClick={executeCustomMessage} disabled={isPending}>
        {isPending ? "Executing..." : "Execute Custom Message"}
      </button>
    </div>
  );
}