arb.rs

arb.rs

use web3::types::{H160, U256};
use web3::contract::{Contract, Options};
use std::str::FromStr;
use std::time::Duration;
use tokio::time;

// Define DEX struct
struct DEX {
    name: String,
    router_address: H160,
    factory_address: H160,
}

// Define token pair struct
struct TokenPair {
    token_a: H160,
    token_b: H160,
}

// Main arbitrage function
async fn perform_arbitrage(web3: web3::Web3<web3::transports::Http>, dexes: Vec<DEX>, token_pair: TokenPair) -> web3::Result<()> {
    loop {
        let prices = fetch_prices(&web3, &dexes, &token_pair).await?;
        
        if let Some((buy_dex, sell_dex, profit)) = find_arbitrage_opportunity(&prices) {
            if profit > U256::from(0) {
                execute_arbitrage(&web3, buy_dex, sell_dex, &token_pair, profit).await?;
            }
        }

        time::sleep(Duration::from_secs(10)).await;
    }
}

// Fetch prices from DEXes
async fn fetch_prices(web3: &web3::Web3<web3::transports::Http>, dexes: &[DEX], token_pair: &TokenPair) -> web3::Result<Vec<(String, U256)>> {
    let mut prices = Vec::new();

    for dex in dexes {
        let router = Contract::from_json(
            web3.eth(),
            dex.router_address,
            include_bytes!("path/to/router_abi.json"),
        )?;

        let price: U256 = router.query(
            "getAmountsOut",
            (U256::exp10(18), vec![token_pair.token_a, token_pair.token_b]),
            None,
            Options::default(),
            None,
        )
        .await?;

        prices.push((dex.name.clone(), price));
    }

    Ok(prices)
}

// Find arbitrage opportunity
fn find_arbitrage_opportunity(prices: &[(String, U256)]) -> Option<(&str, &str, U256)> {
    let (min_dex, min_price) = prices.iter().min_by_key(|&(_, price)| price)?;
    let (max_dex, max_price) = prices.iter().max_by_key(|&(_, price)| price)?;

    let profit = max_price.saturating_sub(*min_price);
    if profit > U256::zero() {
        Some((min_dex, max_dex, profit))
    } else {
        None
    }
}

// Execute arbitrage
async fn execute_arbitrage(
    web3: &web3::Web3<web3::transports::Http>,
    buy_dex: &str,
    sell_dex: &str,
    token_pair: &TokenPair,
    amount: U256,
) -> web3::Result<()> {
    // Implement buy and sell logic here
    println!("Executing arbitrage: Buy on {}, Sell on {}, Amount: {}", buy_dex, sell_dex, amount);
    Ok(())
}

#[tokio::main]
async fn main() -> web3::Result<()> {
    let transport = web3::transports::Http::new("https://mainnet.infura.io/v3/YOUR-PROJECT-ID")?;
    let web3 = web3::Web3::new(transport);

    let dexes = vec![
        DEX {
            name: "ApeSwap".to_string(),
            router_address: H160::from_str("APESWAP_ROUTER_ADDRESS").unwrap(),
            factory_address: H160::from_str("APESWAP_FACTORY_ADDRESS").unwrap(),
        },
        DEX {
            name: "PancakeSwap".to_string(),
            router_address: H160::from_str("PANCAKESWAP_ROUTER_ADDRESS").unwrap(),
            factory_address: H160::from_str("PANCAKESWAP_FACTORY_ADDRESS").unwrap(),
        },
        // Add other DEXes here
    ];

    let token_pair = TokenPair {
        token_a: H160::from_str("TOKEN_A_ADDRESS").unwrap(),
        token_b: H160::from_str("TOKEN_B_ADDRESS").unwrap(),
    };

    perform_arbitrage(web3, dexes, token_pair).await
}