Use variables namespace for user variables.

src/cofd/dice.rs

@@ -1,5 +1,4 @@
 use crate::context::Context;
-use crate::db::DataError::KeyDoesNotExist;
 use crate::error::BotError;
 use crate::roll::Rolled;
 use futures::stream::{self, StreamExt, TryStreamExt};
@@ -526,7 +525,7 @@ mod tests {
 
     #[tokio::test]
     async fn rejects_large_expression_test() {
-        let db = Database::new(&sled::open(tempdir().unwrap()).unwrap());
+        let db = Database::new(&tempdir().unwrap()).unwrap();
         let ctx = Context::new(&db, "roomid", "username", "message");
 
         let mut amounts = vec![];
@@ -551,7 +550,7 @@ mod tests {
 
     #[tokio::test]
     async fn can_resolve_variables_test() {
-        let db = Database::new(&sled::open(tempdir().unwrap()).unwrap());
+        let db = Database::new(&tempdir().unwrap()).unwrap();
         let ctx = Context::new(&db, "roomid", "username", "message");
 
         db.set_user_variable(&ctx.room_id, &ctx.username, "myvariable", 10)

src/db.rs

@@ -82,7 +82,7 @@ impl Database {
         let prefix_len: usize = prefix.len();
 
         let variables: Result<Vec<_>, DataError> = self
-            .db
+            .variables
             .scan_prefix(prefix)
             .map(|entry| match entry {
                 Ok((key, raw_value)) => {
@@ -108,7 +108,7 @@ impl Database {
     ) -> Result<i32, DataError> {
         let key = to_key(room_id, username, variable_name);
 
-        if let Some(raw_value) = self.db.get(&key)? {
+        if let Some(raw_value) = self.variables.get(&key)? {
             convert(&raw_value)
         } else {
             Err(DataError::KeyDoesNotExist(String::from_utf8(key).unwrap()))
@@ -124,7 +124,8 @@ impl Database {
     ) -> Result<(), DataError> {
         let key = to_key(room_id, username, variable_name);
         let db_value: I32<LittleEndian> = I32::new(value);
-        self.db.insert(&key, IVec::from(db_value.as_bytes()))?;
+        self.variables
+            .insert(&key, IVec::from(db_value.as_bytes()))?;
         Ok(())
     }
 
@@ -135,7 +136,7 @@ impl Database {
         variable_name: &str,
     ) -> Result<(), DataError> {
         let key = to_key(room_id, username, variable_name);
-        if let Some(_) = self.db.remove(&key)? {
+        if let Some(_) = self.variables.remove(&key)? {
             Ok(())
         } else {
             Err(DataError::KeyDoesNotExist(String::from_utf8(key).unwrap()))