main.rs

abigen!(WBNBContract, "https://api-testnet.bscscan.com/api?module=contract&action=getabi&address=0xae13d989dac2f0debff460ac112a837c89baa7cd&apikey=SW4QW2JXP54AXI4RZ823QX7VGVMYD2X87A&format=raw");

#[tokio::main]
async fn main() -> Result<()> {

    // connect to the network
    let provider = Provider::<Http>::try_from("https://data-seed-prebsc-1-s1.binance.org:8545")?;
    let chain = provider.get_chainid().await?;

    let p = PathBuf::from_str("/home/user/projects/rust/bmc/wallet_ids").unwrap();
    let mut paths = fs::read_dir(p).unwrap();

    let p = paths.next().map(|x| x.unwrap());

    let mut rng = thread_rng();
    let wallet = if let Some(filePath) = p {
        MnemonicBuilder::<English>::default()
        .word_count(12)
        .phrase(filePath.path())
        .build()
    }
    else {
        MnemonicBuilder::<English>::default()
        .word_count(12)
        .write_to("/home/user/projects/rust/bmc/wallet_ids")
        .build_random(&mut rng)
    }?;

    let wallet_addr = "$ADDR".parse::<Address>()?;
    let client = Arc::new(provider.with_sender(wallet_addr));

    # token addr of BNB not WBNB
    let address = "0x2b8ff854c5e16cf35b9a792390cc3a2a60ec9ba2".parse::<Address>()?;
    let instance = WBNBContract::new(address, client);
    let symbol = instance.symbol().call().await?;
    println!("symbol: {}", symbol);
    let supply = instance.total_supply().call().await?;
    println!("Total supply of {}: {}", symbol, supply);
    let decimals = instance.decimals().call().await?;
    let balance = instance.balance_of(wallet_addr).call().await?;

    println!("Decimals: {}", decimals);
    //println!("{}", balance.div(10_i64.pow(decimals as u64)));
    println!("balance: {}", balance);

    Ok(())
}