w3kit 0.1.5

A toolkit for several blockchains.
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// ethereum/connectors.rs
// author: steinkirch

use std::str::FromStr;
use web3::types::{H160};

pub type Transport = web3::transports::Either<web3::transports::WebSocket, web3::transports::Http>;

use crate::{
    utils::maths::wei_to_eth,
};


////////////////////////////
// Private functions
////////////////////////////

async fn get_account(transport: Transport, account_address: &str) -> web3::Result<()> {

    let web3s = web3::Web3::new(transport);

    let mut accounts = web3s.eth().accounts().await?;
    accounts.push(H160::from_str(account_address).unwrap());
    println!("✅ retrieving balances...");

    for account in accounts {
        let balance = web3s.eth().balance(account, None).await?;
        println!("      💰 account {:?} 👉 {} ETH", account, wei_to_eth(balance));
    }
    
    Ok(())

}

async fn get_block(transport: Transport) -> web3::Result<()> {

    let web3s = web3::Web3::new(transport);

    let block = web3s.eth().block_number().await?;
    println!("✅ current block: {:?}", block);
    
    Ok(())

}


////////////////////////////
// Public functions
////////////////////////////

// This function connects to Ethereum via either HTTP or WS
pub async fn ethereum_connect(provider_url: &str) -> web3::Result {

    let transport = web3::transports::Http::new(provider_url)?;
    
    get_block(web3::transports::Either::Right(transport)).await

}


pub async fn ethereum_get_account(provider_url: &str, account_address: &str) -> web3::Result {

    let transport = web3::transports::Http::new(provider_url)?;
    
    get_account(web3::transports::Either::Right(transport), account_address).await

}