kabu_strategy_backrun/
swap_calculator.rs

1use alloy_primitives::utils::parse_units;
2use alloy_primitives::U256;
3use kabu_evm_db::KabuDBError;
4use kabu_types_entities::{SwapError, SwapLine};
5use lazy_static::lazy_static;
6use revm::DatabaseRef;
7
8lazy_static! {
9    static ref START_OPTIMIZE_INPUT: U256 = parse_units("0.01", "ether").unwrap().get_absolute();
10}
11
12pub struct SwapCalculator {}
13
14impl SwapCalculator {
15    #[inline]
16    #[allow(clippy::result_large_err)]
17    pub fn calculate<'a, DB: DatabaseRef<Error = KabuDBError>>(
18        path: &'a mut SwapLine,
19        db: &DB,
20    ) -> eyre::Result<&'a mut SwapLine, SwapError> {
21        let first_token = path.get_first_token().unwrap();
22        if let Some(amount_in) = first_token.calc_token_value_from_eth(*START_OPTIMIZE_INPUT) {
23            //trace!("calculate : {} amount in : {}",first_token.get_symbol(), first_token.to_float(amount_in) );
24            path.optimize_with_in_amount(db, amount_in)
25        } else {
26            Err(path.to_error("PRICE_NOT_SET".to_string()))
27        }
28    }
29}