feat(defi): implement From<Pool> → CurrencyPair & InstrumentAny

Author: Vadim Nicolai

crates/model/src/defi/dex.rs

@@ -16,6 +16,9 @@
 use std::{borrow::Cow, fmt::Display, sync::Arc};
 
 use crate::defi::{amm::Pool, chain::Chain};
+use crate::identifiers::{InstrumentId, Symbol, Venue};
+use crate::instruments::{Instrument, any::InstrumentAny, currency_pair::CurrencyPair};
+use crate::types::{currency::Currency, price::Price, quantity::Quantity};
 
 /// Represents different types of Automated Market Makers (AMMs) in DeFi protocols.
 #[derive(Debug, Clone)]
@@ -96,3 +99,46 @@ impl Display for Dex {
         write!(f, "Dex(chain={}, name={})", self.chain, self.name)
     }
 }
+
+impl From<Pool> for CurrencyPair {
+    fn from(p: Pool) -> Self {
+        let symbol = Symbol::from(format!("{}/{}", p.token0.symbol, p.token1.symbol));
+        let id = InstrumentId::new(symbol, Venue::from("DEFI"));
+
+        let size_precision = p.token0.decimals;
+        let price_precision = p.token0.decimals.saturating_add(p.token1.decimals);
+
+        let price_increment = Price::new(10f64.powi(-(price_precision as i32)), price_precision);
+        let size_increment = Quantity::new(10f64.powi(-(size_precision as i32)), size_precision);
+
+        CurrencyPair::new(
+            id,
+            symbol,
+            Currency::from(p.token0.symbol.as_str()),
+            Currency::from(p.token1.symbol.as_str()),
+            price_precision,
+            size_precision,
+            price_increment,
+            size_increment,
+            None,
+            None,
+            None,
+            None,
+            None,
+            None,
+            None,
+            None,
+            None,
+            None,
+            None,
+            0.into(),
+            0.into(),
+        )
+    }
+}
+
+impl From<Pool> for InstrumentAny {
+    fn from(p: Pool) -> Self {
+        CurrencyPair::from(p).into_any()
+    }
+}