getOrCreateAssociatedTokenAccount method

Future<Ed25519HDPublicKey> getOrCreateAssociatedTokenAccount(Ed25519HDKeyPair ownerKeys, Ed25519HDPublicKey senderPubKey, Ed25519HDPublicKey accountPubKey, SolanaClient solanaClient,)

Get or create associated token account

Functionality

Fetches or creates an associated token account for a given mint and owner.

Params

Ed25519HDKeyPair ownerKeys - The keypair of the account that will own the newly created token account. Ed25519HDPublicKey senderPubKey - The public key of the token for which an account will be created. Ed25519HDPublicKey accountPubKey - The public key of the account that will own the newly created token account. SolanaClient solanaClient - RPC Client Ed25519HDPublicKey - The public key of the associated token account

Return

Ed25519HDPublicKey as new associated account public address

Implementation

Future<solana.Ed25519HDPublicKey> getOrCreateAssociatedTokenAccount(
    solana.Ed25519HDKeyPair ownerKeys,
    solana.Ed25519HDPublicKey senderPubKey,
    solana.Ed25519HDPublicKey accountPubKey,
    solana.SolanaClient solanaClient) async {
  final solana.Ed25519HDPublicKey mintPubKey =
      solana.Ed25519HDPublicKey.fromBase58(Constants.MINT_TOKEN);

  final response = await solanaClient.rpcClient.getTokenAccountsByOwner(
    accountPubKey.toBase58(),
    TokenAccountsFilter.byMint(mintPubKey.toBase58()),
  );

  if (response.value.isNotEmpty) {
    final String associatedAccountAddress = response.value[0].pubkey;
    return solana.Ed25519HDPublicKey.fromBase58(associatedAccountAddress);
  }

  final TransactionInstruction instruction =
      await createAssociatedTokenAccountInstruction(
    /// [Sender] is the fee payer
    senderPubKey,
    accountPubKey,
    mintPubKey,
  );

  await solanaClient.rpcClient.signAndSendTransaction(
    solana.Message.only(
      encoder.Instruction(
        accounts: instruction.keys,
        data: encoder.ByteArray(instruction.data),
        programId: instruction.programId,
      ),
    ),
    [ownerKeys],
  );

  final solana.Ed25519HDPublicKey newAssociatedAccountAddress =
      await findAssociatedTokenAddress(
    accountPubKey,
    mintPubKey,
  );

  return newAssociatedAccountAddress;
}