Added Range order pool price to the pool_price_v2 rpc call (#4548)

Co-authored-by: dandanlen <3168260+dandanlen@users.noreply.github.com>

state-chain/amm/src/lib.rs

@@ -57,6 +57,12 @@ impl<LiquidityProvider: Clone + Ord> PoolState<LiquidityProvider> {
 		})
 	}
 
+	/// Returns the Range Order sub-pool's current price.
+	/// SwapDirection is ignored as the price are the same for both directions.
+	pub fn current_range_order_pool_price(&mut self) -> SqrtPriceQ64F96 {
+		self.range_orders.raw_current_sqrt_price()
+	}
+
 	/// Returns the current sqrt price for a given direction of swap. The price is measured in units
 	/// of the specified Pairs argument
 	pub fn current_sqrt_price(&mut self, order: Side) -> Option<SqrtPriceQ64F96> {

state-chain/amm/src/range_orders.rs

@@ -521,6 +521,11 @@ impl<LiquidityProvider: Clone + Ord> PoolState<LiquidityProvider> {
 		SD::further_liquidity(self.current_tick).then_some(self.current_sqrt_price)
 	}
 
+	/// Returns the raw current sqrt price of the pool, without liquidity checks.
+	pub(super) fn raw_current_sqrt_price(&self) -> SqrtPriceQ64F96 {
+		self.current_sqrt_price
+	}
+
 	/// Calculates the fees owed to the specified position, resets the fees owed for that position
 	/// to zero, calls `try_debit` passing the Amounts required to add the `minted_liquidity` to the
 	/// position. If `try_debit` returns `Ok(t)` the position will be created if it didn't already

state-chain/pallets/cf-pools/src/lib.rs

@@ -1193,6 +1193,7 @@ pub struct PoolPriceV1 {
 pub struct PoolPriceV2 {
 	pub sell: Option<SqrtPriceQ64F96>,
 	pub buy: Option<SqrtPriceQ64F96>,
+	pub range_order: SqrtPriceQ64F96,
 }
 
 impl<T: Config> Pallet<T> {
@@ -1558,6 +1559,7 @@ impl<T: Config> Pallet<T> {
 		Ok(PoolPriceV2 {
 			sell: pool.pool_state.current_price(Side::Sell).map(|(_, sqrt_price, _)| sqrt_price),
 			buy: pool.pool_state.current_price(Side::Buy).map(|(_, sqrt_price, _)| sqrt_price),
+			range_order: pool.pool_state.current_range_order_pool_price(),
 		})
 	}