Code for Solana AI Coin

use solana_program::{
    account_info::{next_account_info, AccountInfo},
    entrypoint,
    entrypoint::ProgramResult,
    msg,
    program_error::ProgramError,
    pubkey::Pubkey,
};

// Define the token's metadata
const TOKEN_NAME: &str = "Solana AI Coin";
const TOKEN_SYMBOL: &str = "SAIC";
const DECIMALS: u8 = 9;

// Define the token's accounts
struct TokenAccounts {
    mint: Pubkey,
    alice: Pubkey,
    bob: Pubkey,
}

// Initialize the token's accounts
fn init_token_accounts(accounts: &[AccountInfo]) -> Result<TokenAccounts, ProgramError> {
    let mint_account_info = next_account_info(accounts)?;
    let alice_account_info = next_account_info(accounts)?;
    let bob_account_info = next_account_info(accounts)?;

    Ok(TokenAccounts {
        mint: *mint_account_info.key,
        alice: *alice_account_info.key,
        bob: *bob_account_info.key,
    })
}

// Create a new token mint
fn create_mint(accounts: &[AccountInfo], token_accounts: &TokenAccounts) -> Result<(), ProgramError> {
    let mint_account_info = next_account_info(accounts)?;
    let rent_sysvar_account_info = next_account_info(accounts)?;
    let token_program_account_info = next_account_info(accounts)?;

    // Create a new token mint
    **mint_account_info.try_borrow_mut_lamports()? += 1;
    msg!("Create mint account");
    Ok(())
}

// Mint tokens to Alice's account
fn mint_to_alice(accounts: &[AccountInfo], token_accounts: &TokenAccounts) -> Result<(), ProgramError> {
    let alice_account_info = next_account_info(accounts)?;
    let mint_account_info = next_account_info(accounts)?;
    let token_program_account_info = next_account_info(accounts)?;

    // Mint 100 tokens to Alice's account
    **alice_account_info.try_borrow_mut_lamports()? += 100 * 10_u64.pow(DECIMALS as u32);
    msg!("Mint 100 tokens to Alice");
    Ok(())
}

entrypoint!(process_instruction);

fn process_instruction(
    program_id: &Pubkey,
    accounts: &[AccountInfo],
    instruction_data: &[u8],
) -> ProgramResult {
    if instruction_data.len() != 1 {
        return Err(ProgramError::InvalidInstructionData);
    }

    let token_accounts = init_token_accounts(accounts)?;
    match instruction_data[0] {
        0 => create_mint(accounts, &token_accounts),
        1 => mint_to_alice(accounts, &token_accounts),
        _ => Err(ProgramError::InvalidInstruction),
    }
}