Close Token Account

import {
  airdropFactory,
  appendTransactionMessageInstructions,
  createSolanaRpc,
  createSolanaRpcSubscriptions,
  createTransactionMessage,
  generateKeyPairSigner,
  getSignatureFromTransaction,
  lamports,
  pipe,
  sendAndConfirmTransactionFactory,
  setTransactionMessageFeePayerSigner,
  setTransactionMessageLifetimeUsingBlockhash,
  signTransactionMessageWithSigners
} from "@solana/kit";
import { getCreateAccountInstruction } from "@solana-program/system";
import {
  getCreateAssociatedTokenInstructionAsync,
  getInitializeMintInstruction,
  getMintSize,
  TOKEN_PROGRAM_ADDRESS,
  findAssociatedTokenPda,
  getCloseAccountInstruction
} from "@solana-program/token";

// Create Connection, local validator in this example
const rpc = createSolanaRpc("http://localhost:8899");
const rpcSubscriptions = createSolanaRpcSubscriptions("ws://localhost:8900");

// Generate keypairs for fee payer and destination
const feePayer = await generateKeyPairSigner();
const destination = await generateKeyPairSigner();

// Fund fee payer
await airdropFactory({ rpc, rpcSubscriptions })({
  recipientAddress: feePayer.address,
  lamports: lamports(1_000_000_000n),
  commitment: "confirmed"
});

// Generate keypair to use as address of mint
const mint = await generateKeyPairSigner();

// Get default mint account size (in bytes), no extensions enabled
const space = BigInt(getMintSize());

// Get minimum balance for rent exemption
const rent = await rpc.getMinimumBalanceForRentExemption(space).send();

// Get latest blockhash to include in transaction
const { value: latestBlockhash } = await rpc.getLatestBlockhash().send();

// Instruction to create new account for mint (token program)
// Invokes the system program
const createAccountInstruction = getCreateAccountInstruction({
  payer: feePayer,
  newAccount: mint,
  lamports: rent,
  space,
  programAddress: TOKEN_PROGRAM_ADDRESS
});

// Instruction to initialize mint account data
// Invokes the token program
const initializeMintInstruction = getInitializeMintInstruction({
  mint: mint.address,
  decimals: 9,
  mintAuthority: feePayer.address
});

// Use findAssociatedTokenPda to derive the ATA address
const [associatedTokenAddress] = await findAssociatedTokenPda({
  mint: mint.address,
  owner: feePayer.address,
  tokenProgram: TOKEN_PROGRAM_ADDRESS
});

// Create instruction to create the associated token account
const createAtaInstruction = await getCreateAssociatedTokenInstructionAsync({
  payer: feePayer,
  mint: mint.address,
  owner: feePayer.address
});

const instructions = [
  createAccountInstruction,
  initializeMintInstruction,
  createAtaInstruction
];

// Create transaction message
const transactionMessage = pipe(
  createTransactionMessage({ version: 0 }),
  (tx) => setTransactionMessageFeePayerSigner(feePayer, tx),
  (tx) => setTransactionMessageLifetimeUsingBlockhash(latestBlockhash, tx),
  (tx) => appendTransactionMessageInstructions(instructions, tx)
);

// Sign transaction message with all required signers
const signedTransaction =
  await signTransactionMessageWithSigners(transactionMessage);

// Send and confirm transaction
await sendAndConfirmTransactionFactory({ rpc, rpcSubscriptions })(
  signedTransaction,
  { commitment: "confirmed" }
);

// Get transaction signature
const transactionSignature = getSignatureFromTransaction(signedTransaction);

console.log("Mint Address:", mint.address.toString());
console.log(
  "Associated Token Account Address:",
  associatedTokenAddress.toString()
);
console.log("Destination Address:", destination.address.toString());
console.log("Transaction Signature:", transactionSignature);

// Get a fresh blockhash for the close transaction
const { value: closeBlockhash } = await rpc.getLatestBlockhash().send();

// Create instruction to close the token account
const closeAccountInstruction = getCloseAccountInstruction({
  account: associatedTokenAddress,
  destination: destination.address,
  owner: feePayer
});

// Create transaction message for closing
const closeTxMessage = pipe(
  createTransactionMessage({ version: 0 }),
  (tx) => setTransactionMessageFeePayerSigner(feePayer, tx),
  (tx) => setTransactionMessageLifetimeUsingBlockhash(closeBlockhash, tx),
  (tx) => appendTransactionMessageInstructions([closeAccountInstruction], tx)
);

// Sign transaction message with all required signers
const signedCloseTx = await signTransactionMessageWithSigners(closeTxMessage);

// Send and confirm transaction
await sendAndConfirmTransactionFactory({ rpc, rpcSubscriptions })(
  signedCloseTx,
  { commitment: "confirmed" }
);

// Get transaction signature
const transactionSignature2 = getSignatureFromTransaction(signedCloseTx);

console.log("\nSuccessfully closed the token account");
console.log("Transaction Signature:", transactionSignature2);

use anyhow::Result;
use solana_client::nonblocking::rpc_client::RpcClient;
use solana_sdk::{
    commitment_config::CommitmentConfig,
    program_pack::Pack,
    signature::{Keypair, Signer},
    system_instruction::create_account,
    transaction::Transaction,
};
use spl_associated_token_account::{
    get_associated_token_address_with_program_id, instruction::create_associated_token_account,
};
use spl_token::{
    id as token_program_id,
    instruction::{initialize_mint, close_account},
    state::Mint,
};

#[tokio::main]
async fn main() -> Result<()> {
    // Create connection to local validator
    let client = RpcClient::new_with_commitment(
        String::from("http://localhost:8899"),
        CommitmentConfig::confirmed(),
    );
    let latestBlockhash = client.get_latest_blockhash().await?;

    // Generate a new keypair for the fee payer
    let fee_payer = Keypair::new();

    // Generate a new keypair for the destination (to receive SOL from closed account)
    let destination = Keypair::new();

    // Airdrop 1 SOL to fee payer
    let airdrop_signature = client
        .request_airdrop(&fee_payer.pubkey(), 1_000_000_000)
        .await?;
    client.confirm_transaction(&airdrop_signature).await?;

    loop {
        let confirmed = client.confirm_transaction(&airdrop_signature).await?;
        if confirmed {
            break;
        }
    }

    // Generate keypair to use as address of mint
    let mint = Keypair::new();

    // Get default mint account size (in bytes), no extensions enabled
    let mint_space = Mint::LEN;
    let mint_rent = client
        .get_minimum_balance_for_rent_exemption(mint_space)
        .await?;

    // Instruction to create new account for mint (token program)
    let create_account_instruction = create_account(
        &fee_payer.pubkey(),      // payer
        &mint.pubkey(),           // new account (mint)
        mint_rent,                // lamports
        mint_space as u64,        // space
        &token_program_id(), // program id
    );

    // Instruction to initialize mint account data
    let initialize_mint_instruction = initialize_mint(
        &token_program_id(),
        &mint.pubkey(),            // mint
        &fee_payer.pubkey(),       // mint authority
        Some(&fee_payer.pubkey()), // freeze authority
        9,                         // decimals
    )?;

    // Calculate the associated token account address for fee_payer
    let associated_token_address = get_associated_token_address_with_program_id(
        &fee_payer.pubkey(),      // owner
        &mint.pubkey(),           // mint
        &token_program_id(), // program_id
    );

    // Instruction to create associated token account
    let create_ata_instruction = create_associated_token_account(
        &fee_payer.pubkey(),      // funding address
        &fee_payer.pubkey(),      // wallet address
        &mint.pubkey(),           // mint address
        &token_program_id(), // program id
    );

    // Create transaction and add instructions
    let transaction = Transaction::new_signed_with_payer(
        &[
            create_account_instruction,
            initialize_mint_instruction,
            create_ata_instruction,
        ],
        Some(&fee_payer.pubkey()),
        &[&fee_payer, &mint],
        latestBlockhash,
    );

    // Send and confirm transaction
    let transaction_signature = client.send_and_confirm_transaction(&transaction).await?;

    println!("Mint Address: {}", mint.pubkey());
    println!(
        "Associated Token Account Address: {}",
        associated_token_address
    );
    println!("Destination Address: {}", destination.pubkey());
    println!("Transaction Signature: {}", transaction_signature);

    // Get the latest blockhash for the close transaction
    let latestBlockhash = client.get_latest_blockhash().await?;

    // Create close account instruction
    let close_instruction = close_account(
        &token_program_id(),
        &associated_token_address, // Token account to close
        &destination.pubkey(), // Destination to receive SOL
        &fee_payer.pubkey(), // Owner of token account
        &[&fee_payer.pubkey()],
    )?;

    // Create transaction for closing token account
    let transaction = Transaction::new_signed_with_payer(
        &[close_instruction],
        Some(&fee_payer.pubkey()),
        &[&fee_payer],
        latestBlockhash,
    );

    // Send and confirm transaction
    let transaction_signature = client.send_and_confirm_transaction(&transaction).await?;

    println!("\nSuccessfully closed the token account");
    println!("Transaction Signature: {}", transaction_signature);

    Ok(())
}