computer: fix open of ohlc if fetched from different API than prev ohlc

crates/brk_computer/src/vecs/fetched.rs

@@ -7,7 +7,7 @@ use brk_core::{
 use brk_exit::Exit;
 use brk_fetcher::Fetcher;
 use brk_indexer::Indexer;
-use brk_vec::{AnyCollectableVec, AnyIterableVec, Computation, EagerVec, Format};
+use brk_vec::{AnyCollectableVec, AnyIterableVec, Computation, EagerVec, Format, StoredIndex};
 
 use super::{
     Indexes,
@@ -429,8 +429,18 @@ impl Vecs {
         self.dateindex_to_ohlc_in_cents.compute_transform(
             starting_indexes.dateindex,
             &indexes.dateindex_to_date,
-            |(di, d, ..)| {
-                let ohlc = fetcher.get_date(d).unwrap();
+            |(di, d, this)| {
+                let mut ohlc = fetcher.get_date(d).unwrap();
+                if let Some(prev) = di.decremented() {
+                    let prev_open = *this
+                        .get_or_read(prev, &this.mmap().load())
+                        .unwrap()
+                        .unwrap()
+                        .close;
+                    *ohlc.open = prev_open;
+                    *ohlc.high = (*ohlc.high).max(prev_open);
+                    *ohlc.low = (*ohlc.low).min(prev_open);
+                }
                 (di, ohlc)
             },
             exit,

crates/brk_core/src/structs/ohlc.rs

@@ -1,6 +1,6 @@
 use std::ops::{Add, Div};
 
-use derive_deref::Deref;
+use derive_deref::{Deref, DerefMut};
 use serde::{Serialize, Serializer, ser::SerializeTuple};
 use zerocopy_derive::{FromBytes, Immutable, IntoBytes, KnownLayout};
 
@@ -172,6 +172,7 @@ impl From<Close<Sats>> for OHLCSats {
     IntoBytes,
     KnownLayout,
     Deref,
+    DerefMut,
     Serialize,
 )]
 #[repr(C)]
@@ -259,6 +260,7 @@ where
     IntoBytes,
     KnownLayout,
     Deref,
+    DerefMut,
     Serialize,
 )]
 #[repr(C)]
@@ -346,6 +348,7 @@ where
     IntoBytes,
     KnownLayout,
     Deref,
+    DerefMut,
     Serialize,
 )]
 #[repr(C)]
@@ -433,6 +436,7 @@ where
     IntoBytes,
     KnownLayout,
     Deref,
+    DerefMut,
     Serialize,
 )]
 #[repr(C)]

crates/brk_parser/src/blk_index_to_blk_recap.rs

@@ -96,9 +96,10 @@ impl BlkIndexToBlkRecap {
     }
 
     pub fn export(&self) {
-        let file = File::create(&self.path).unwrap_or_else(|_| {
+        let file = File::create(&self.path).unwrap_or_else(|e| {
+            dbg!(e);
             dbg!(&self.path);
-            panic!("No such file or directory")
+            panic!("Cannot write file");
         });
 
         serde_json::to_writer(&mut BufWriter::new(file), &self.tree).unwrap();