use web3::transports::Http;
use web3::types::{Address, U256};
use web3::contract::{Contract, Options};
use std::env;
use dotenv::dotenv;

#[tokio::main]
async fn main() -> web3::contract::Result<()> {
    dotenv().ok();

    let infura_project_id = env::var("INFURA_PROJECT_ID").expect("ENV Variable INFURA_PROJECT_ID Not Found");
    let provider_url = format!("https://mainnet.infura.io/v3/{}", infura_project_id);

    let http = Http::new(&provider_url)?;
    let web3 = web3::Web3::new(http);

    let abi: &[u8] = br#"[{"constant":true,"inputs":[],"name":"liquidity","outputs":[{"internalType":"uint128","name":"","type":"uint128"}],"payable":false,"stateMutability":"view","type":"function"}]"#;
    let pool_address: Address = "0x0d4a11d5EEaaC28EC3F61d100daF4d40471f1852".parse().expect("Invalid address");
    let contract = Contract::from_json(web3.eth(), pool_address, abi).expect("Contract creation failed");

    println!("{:?}", contract.abi());

    let result: U256 = contract.query("liquidity", (), None, Options::default(), None).await?;

    println!("Liquidity of the pool: {:?}", result);

    Ok(())
}