computer: snapshot

crates/brk_computer/src/internal/multi/from_height/lazy_binary_price.rs

@@ -0,0 +1,63 @@
+//! Lazy binary price wrapper with both USD and sats representations.
+//!
+//! Height-level value is lazy binary: transform(source1[h], source2[h]).
+//! Sats are derived lazily from the dollars output.
+
+use brk_error::Result;
+use brk_traversable::Traversable;
+use brk_types::{Dollars, Height, SatsFract, Version};
+use derive_more::{Deref, DerefMut};
+use schemars::JsonSchema;
+use vecdb::{BinaryTransform, Database, IterableBoxedVec, IterableCloneableVec};
+
+use super::LazyBinaryComputedFromHeightLast;
+use crate::{
+    indexes,
+    internal::{ComputedVecValue, DollarsToSatsFract, LazyFromHeightLast, NumericValue},
+};
+
+/// Lazy binary price metric with both USD and sats representations.
+///
+/// Dollars: lazy binary transform at height, stored at dateindex.
+/// Sats: lazy unary transform of dollars (fully lazy).
+#[derive(Clone, Deref, DerefMut, Traversable)]
+#[traversable(merge)]
+pub struct LazyBinaryPriceFromHeight<S1T = Dollars, S2T = Dollars>
+where
+    S1T: ComputedVecValue + JsonSchema,
+    S2T: ComputedVecValue + JsonSchema,
+{
+    #[deref]
+    #[deref_mut]
+    #[traversable(flatten)]
+    pub dollars: LazyBinaryComputedFromHeightLast<Dollars, S1T, S2T>,
+    pub sats: LazyFromHeightLast<SatsFract, Dollars>,
+}
+
+impl<S1T, S2T> LazyBinaryPriceFromHeight<S1T, S2T>
+where
+    S1T: NumericValue + JsonSchema,
+    S2T: NumericValue + JsonSchema,
+{
+    pub fn forced_import<F: BinaryTransform<S1T, S2T, Dollars>>(
+        db: &Database,
+        name: &str,
+        version: Version,
+        source1: IterableBoxedVec<Height, S1T>,
+        source2: IterableBoxedVec<Height, S2T>,
+        indexes: &indexes::Vecs,
+    ) -> Result<Self> {
+        let dollars = LazyBinaryComputedFromHeightLast::forced_import::<F>(
+            db, name, version, source1, source2, indexes,
+        )?;
+
+        let sats = LazyFromHeightLast::from_lazy_binary_computed::<DollarsToSatsFract, S1T, S2T>(
+            &format!("{name}_sats"),
+            version,
+            dollars.height.boxed_clone(),
+            &dollars,
+        );
+
+        Ok(Self { dollars, sats })
+    }
+}

crates/brk_computer/src/internal/multi/from_height/mod.rs

@@ -11,6 +11,7 @@ mod lazy_transform_distribution;
 mod lazy_binary_computed_distribution;
 mod lazy_binary_computed_full;
 mod lazy_binary_computed_last;
+mod lazy_binary_price;
 mod lazy_binary_computed_sum;
 mod lazy_binary_computed_sum_cum;
 mod lazy_computed_full;
@@ -47,6 +48,7 @@ pub use lazy_transform_distribution::*;
 pub use lazy_binary_computed_distribution::*;
 pub use lazy_binary_computed_full::*;
 pub use lazy_binary_computed_last::*;
+pub use lazy_binary_price::*;
 pub use lazy_binary_computed_sum::*;
 pub use lazy_binary_computed_sum_cum::*;
 pub use lazy_computed_full::*;