默认状态

use anyhow::Result;
use solana_client::nonblocking::rpc_client::RpcClient;
use solana_commitment_config::CommitmentConfig;
use solana_sdk::{
    signature::{Keypair, Signer},
    transaction::Transaction,
};
use solana_system_interface::instruction::create_account;
use spl_token_2022_interface::{
    extension::{
        default_account_state::{
            instruction::initialize_default_account_state, DefaultAccountState,
        },
        BaseStateWithExtensions, ExtensionType, StateWithExtensions,
    },
    instruction::{initialize_account, initialize_mint},
    state::{Account, AccountState, Mint},
    ID as TOKEN_2022_PROGRAM_ID,
};

#[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 latest_blockhash = client.get_latest_blockhash().await?;

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

    // Airdrop 5 SOL to fee payer
    let airdrop_signature = client
        .request_airdrop(&fee_payer.pubkey(), 5_000_000_000)
        .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),
    let mint_space =
        ExtensionType::try_calculate_account_len::<Mint>(&[ExtensionType::DefaultAccountState])?;

    let mint_rent = client
        .get_minimum_balance_for_rent_exemption(mint_space)
        .await?;

    // Instruction to create new account for mint (token22)
    let create_mint_account_instruction = create_account(
        &fee_payer.pubkey(),    // payer
        &mint.pubkey(),         // new account (mint)
        mint_rent,              // lamports
        mint_space as u64,      // space
        &TOKEN_2022_PROGRAM_ID, // program id
    );

    // Instruction to initialize mint account data
    let initialize_mint_instruction = initialize_mint(
        &TOKEN_2022_PROGRAM_ID,    // program id
        &mint.pubkey(),            // mint
        &fee_payer.pubkey(),       // mint authority
        Some(&fee_payer.pubkey()), // freeze authority
        9,                         // decimals
    )?;

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

    // Get default token account size (in bytes)
    let token_account_space = ExtensionType::try_calculate_account_len::<Account>(&[])?;

    let token_account_rent = client
        .get_minimum_balance_for_rent_exemption(token_account_space)
        .await?;

    // Instruction to create new account for token account (token22)
    let create_token_account_instruction = create_account(
        &fee_payer.pubkey(),        // payer
        &token_account.pubkey(),    // new account (token account)
        token_account_rent,         // rent
        token_account_space as u64, // space
        &TOKEN_2022_PROGRAM_ID,     // program id
    );

    // initialize token account
    let initialize_token_account = initialize_account(
        &TOKEN_2022_PROGRAM_ID,  // program_id
        &token_account.pubkey(), // token account
        &mint.pubkey(),          //  mint
        &fee_payer.pubkey(),     // authority
    )?;

    // initialize default token account state instruction
    let initialize_default_account_state_instruction = initialize_default_account_state(
        &TOKEN_2022_PROGRAM_ID,
        &mint.pubkey(),
        &AccountState::Frozen,
    )?;

    // Construct transaction with previous instructions
    let transaction = Transaction::new_signed_with_payer(
        &[
            create_mint_account_instruction,
            initialize_default_account_state_instruction,
            initialize_mint_instruction,
            create_token_account_instruction,
            initialize_token_account,
        ],
        Some(&fee_payer.pubkey()),
        &[&fee_payer, &mint, &token_account],
        latest_blockhash,
    );

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

    println!("Mint Address: {}", mint.pubkey());

    // Fetch mint account
    let mint_account = client.get_account(&mint.pubkey()).await?;
    // Deserialize the mint account with extensions
    let mint_state = StateWithExtensions::<Mint>::unpack(&mint_account.data)?;

    // Get all extension types enabled on this mint
    let mint_extension_types = mint_state.get_extension_types()?;
    println!("\nMint extensions enabled: {:?}", mint_extension_types);

    // Deserialize the DefaultAccountState extension data
    let default_account_state = mint_state.get_extension::<DefaultAccountState>()?;
    println!("\n{:#?}", default_account_state);

    // Fetch token account
    let token_account_data = client.get_account(&token_account.pubkey()).await?;
    // Deserialize the token account with extensions
    let token_account_state = StateWithExtensions::<Account>::unpack(&token_account_data.data)?;

    println!(
        "\nToken account with default state (frozen): {}",
        token_account.pubkey()
    );
    // Display base token account info
    println!("\n{:#?}", token_account_state.base);

    Ok(())
}