feat: check if db upgrade needed

crates/cashu-sdk/src/mint/localstore/mod.rs

@@ -3,6 +3,7 @@ pub mod memory;
 pub mod redb_store;
 
 use std::collections::HashMap;
+use std::num::ParseIntError;
 
 use async_trait::async_trait;
 use cashu::nuts::nut02::mint::KeySet;
@@ -37,6 +38,8 @@ pub enum Error {
     #[cfg(all(not(target_arch = "wasm32"), feature = "redb"))]
     #[error("`{0}`")]
     Serde(#[from] serde_json::Error),
+    #[error("`{0}`")]
+    ParseInt(#[from] ParseIntError),
     #[error("Unknown Mint Info")]
     UnknownMintInfo,
     #[error("`{0}`")]

crates/cashu-sdk/src/mint/localstore/redb_store.rs

@@ -25,6 +25,8 @@ const CONFIG_TABLE: TableDefinition<&str, &str> = TableDefinition::new("config")
 // Key is hex blinded_message B_ value is blinded_signature
 const BLINDED_SIGNATURES: TableDefinition<&[u8], &str> = TableDefinition::new("blinded_signatures");
 
+const DATABASE_VERSION: u64 = 0;
+
 #[derive(Debug, Clone)]
 pub struct RedbLocalStore {
     db: Arc<Mutex<Database>>,
@@ -35,18 +37,35 @@ impl RedbLocalStore {
         let db = Database::create(path)?;
 
         let write_txn = db.begin_write()?;
+        // Check database version
         {
-            let _ = write_txn.open_table(ACTIVE_KEYSETS_TABLE)?;
-            let _ = write_txn.open_table(KEYSETS_TABLE)?;
-            let _ = write_txn.open_table(MINT_QUOTES_TABLE)?;
-            let _ = write_txn.open_table(MELT_QUOTES_TABLE)?;
-            let _ = write_txn.open_table(PENDING_PROOFS_TABLE)?;
-            let _ = write_txn.open_table(SPENT_PROOFS_TABLE)?;
             let _ = write_txn.open_table(CONFIG_TABLE)?;
-            let _ = write_txn.open_table(BLINDED_SIGNATURES)?;
+            let mut table = write_txn.open_table(CONFIG_TABLE)?;
+
+            let db_version = table.get("db_version")?;
+            let db_version = db_version.map(|v| v.value().to_owned());
+
+            if let Some(db_version) = db_version {
+                let current_file_version = u64::from_str(&db_version)?;
+                if current_file_version.ne(&DATABASE_VERSION) {
+                    // Database needs to be upgraded
+                    todo!()
+                }
+            } else {
+                // Open all tables to init a new db
+                let _ = write_txn.open_table(ACTIVE_KEYSETS_TABLE)?;
+                let _ = write_txn.open_table(KEYSETS_TABLE)?;
+                let _ = write_txn.open_table(MINT_QUOTES_TABLE)?;
+                let _ = write_txn.open_table(MELT_QUOTES_TABLE)?;
+                let _ = write_txn.open_table(PENDING_PROOFS_TABLE)?;
+                let _ = write_txn.open_table(SPENT_PROOFS_TABLE)?;
+                let _ = write_txn.open_table(BLINDED_SIGNATURES)?;
+
+                table.insert("db_version", "0")?;
+            };
         }
-        write_txn.commit()?;
 
+        write_txn.commit()?;
         Ok(Self {
             db: Arc::new(Mutex::new(db)),
         })

crates/cashu-sdk/src/wallet/localstore/mod.rs

@@ -4,6 +4,7 @@ mod memory;
 mod redb_store;
 
 use std::collections::HashMap;
+use std::num::ParseIntError;
 
 use async_trait::async_trait;
 use cashu::nuts::{Id, KeySetInfo, Keys, MintInfo, Proofs};
@@ -37,6 +38,8 @@ pub enum Error {
     #[cfg(all(not(target_arch = "wasm32"), feature = "redb"))]
     #[error("`{0}`")]
     Serde(#[from] serde_json::Error),
+    #[error("`{0}`")]
+    ParseInt(#[from] ParseIntError),
 }
 
 #[async_trait]

crates/cashu-sdk/src/wallet/localstore/redb_store.rs

@@ -20,9 +20,12 @@ const MINT_KEYS_TABLE: TableDefinition<&str, &str> = TableDefinition::new("mint_
 const PROOFS_TABLE: MultimapTableDefinition<&str, &str> = MultimapTableDefinition::new("proofs");
 const PENDING_PROOFS_TABLE: MultimapTableDefinition<&str, &str> =
     MultimapTableDefinition::new("pending_proofs");
+const CONFIG_TABLE: TableDefinition<&str, &str> = TableDefinition::new("config");
 #[cfg(feature = "nut13")]
 const KEYSET_COUNTER: TableDefinition<&str, u64> = TableDefinition::new("keyset_counter");
 
+const DATABASE_VERSION: u64 = 0;
+
 #[derive(Debug, Clone)]
 pub struct RedbLocalStore {
     db: Arc<Mutex<Database>>,
@@ -33,15 +36,35 @@ impl RedbLocalStore {
         let db = Database::create(path)?;
 
         let write_txn = db.begin_write()?;
+
+        // Check database version
         {
-            let _ = write_txn.open_table(MINTS_TABLE)?;
-            let _ = write_txn.open_multimap_table(MINT_KEYSETS_TABLE)?;
-            let _ = write_txn.open_table(MINT_QUOTES_TABLE)?;
-            let _ = write_txn.open_table(MELT_QUOTES_TABLE)?;
-            let _ = write_txn.open_table(MINT_KEYS_TABLE)?;
-            let _ = write_txn.open_multimap_table(PROOFS_TABLE)?;
-            #[cfg(feature = "nut13")]
-            let _ = write_txn.open_table(KEYSET_COUNTER)?;
+            let _ = write_txn.open_table(CONFIG_TABLE)?;
+            let mut table = write_txn.open_table(CONFIG_TABLE)?;
+
+            let db_version = table.get("db_version")?;
+            let db_version = db_version.map(|v| v.value().to_owned());
+
+            if let Some(db_version) = db_version {
+                let current_file_version = u64::from_str(&db_version)?;
+                if current_file_version.ne(&DATABASE_VERSION) {
+                    // Database needs to be upgraded
+                    todo!()
+                }
+                #[cfg(feature = "nut13")]
+                let _ = write_txn.open_table(KEYSET_COUNTER)?;
+            } else {
+                // Open all tables to init a new db
+                let _ = write_txn.open_table(MINTS_TABLE)?;
+                let _ = write_txn.open_multimap_table(MINT_KEYSETS_TABLE)?;
+                let _ = write_txn.open_table(MINT_QUOTES_TABLE)?;
+                let _ = write_txn.open_table(MELT_QUOTES_TABLE)?;
+                let _ = write_txn.open_table(MINT_KEYS_TABLE)?;
+                let _ = write_txn.open_multimap_table(PROOFS_TABLE)?;
+                #[cfg(feature = "nut13")]
+                let _ = write_txn.open_table(KEYSET_COUNTER)?;
+                table.insert("db_version", "0")?;
+            };
         }
         write_txn.commit()?;
 

crates/cashu-sdk/src/wallet/mod.rs

@@ -1,5 +1,6 @@
 //! Cashu Wallet
 use std::collections::{HashMap, HashSet};
+use std::num::ParseIntError;
 use std::str::FromStr;
 use std::sync::Arc;
 
@@ -60,6 +61,8 @@ pub enum Error {
     #[error("Unknown Key")]
     UnknownKey,
     #[error("`{0}`")]
+    ParseInt(#[from] ParseIntError),
+    #[error("`{0}`")]
     Custom(String),
 }