refactor: improve code formatting and readability in SQL and function calls

src/db.rs

@@ -93,7 +93,13 @@ pub fn update_item(conn: &Connection, item: Item) -> Result<()> {
     debug!("DB: Updating item: {:?}", item);
     conn.execute(
         "UPDATE items SET size=?2, compression=?3, digest_type=?4, digest_value=?5 WHERE id=?1",
-        params![item.id, item.size, item.compression, item.digest_type, item.digest_value],
+        params![
+            item.id,
+            item.size,
+            item.compression,
+            item.digest_type,
+            item.digest_value
+        ],
     )?;
     Ok(())
 }
@@ -444,3 +450,16 @@ pub fn get_item_meta_name(conn: &Connection, item: &Item, name: String) -> Resul
         None => Ok(None),
     }
 }
+
+pub fn get_item_meta_value(conn: &Connection, item: &Item, name: String) -> Result<Option<String>> {
+    debug!("DB: Getting item meta value: {:?} {:?}", item, name);
+    let mut statement = conn
+        .prepare_cached("SELECT value FROM metas WHERE id=?1 AND name=?2")
+        .context("Problem preparing SQL statement")?;
+    let mut rows = statement.query(params![item.id, name])?;
+
+    match rows.next()? {
+        Some(row) => Ok(Some(row.get(0)?)),
+        None => Ok(None),
+    }
+}