feat: add wallet init

-refactor prepare_wallet_db fn

Author: tvpeter

src/utils.rs

@@ -102,18 +102,18 @@ pub(crate) fn prepare_home_dir(home_path: Option<PathBuf>) -> Result<PathBuf, Er
 /// Prepare wallet database directory.
 #[allow(dead_code)]
 pub(crate) fn prepare_wallet_db_dir(
-    wallet_name: &Option<String>,
     home_path: &Path,
     wallet_opts: &mut WalletOpts,
 ) -> Result<std::path::PathBuf, Error> {
     let mut dir = home_path.to_owned();
+    let wallet_name = wallet_opts.wallet.clone();
     if let Some(wallet_name) = wallet_name {
-        dir.push(wallet_name);
+        dir.push(&wallet_name);
 
         if !dir.exists() {
             std::fs::create_dir(&dir).map_err(|e| Error::Generic(e.to_string()))?;
         }
-        wallet_opts.load_config(wallet_name, home_path)?;
+        wallet_opts.load_config(wallet_name.as_str(), home_path)?;
     }
 
     Ok(dir)