global: one big snapshot

crates/brk_structs/src/structs/blockhash.rs

@@ -0,0 +1,52 @@
+use std::{fmt, mem};
+
+use bitcoin::hashes::Hash;
+use bitcoincore_rpc::{Client, RpcApi};
+use derive_deref::Deref;
+use serde::{Serialize, Serializer};
+use zerocopy_derive::{FromBytes, Immutable, IntoBytes, KnownLayout};
+
+use super::Height;
+
+#[derive(Debug, Deref, Clone, PartialEq, Eq, Immutable, IntoBytes, KnownLayout, FromBytes)]
+pub struct BlockHash([u8; 32]);
+
+impl From<bitcoin::BlockHash> for BlockHash {
+    fn from(value: bitcoin::BlockHash) -> Self {
+        unsafe { mem::transmute(value) }
+    }
+}
+
+impl From<BlockHash> for bitcoin::BlockHash {
+    fn from(value: BlockHash) -> Self {
+        unsafe { mem::transmute(value) }
+    }
+}
+
+impl From<&BlockHash> for bitcoin::BlockHash {
+    fn from(value: &BlockHash) -> Self {
+        bitcoin::BlockHash::from_slice(&value.0).unwrap()
+    }
+}
+
+impl TryFrom<(&Client, Height)> for BlockHash {
+    type Error = bitcoincore_rpc::Error;
+    fn try_from((rpc, height): (&Client, Height)) -> Result<Self, Self::Error> {
+        Ok(Self::from(rpc.get_block_hash(u64::from(height))?))
+    }
+}
+
+impl fmt::Display for BlockHash {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "{}", bitcoin::BlockHash::from(self))
+    }
+}
+
+impl Serialize for BlockHash {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_str(&self.to_string())
+    }
+}