feat: create user if not exist

client-app/src-tauri/src/commands/user.rs

@@ -0,0 +1,25 @@
+use jwst_storage::{CreateUser, User};
+
+use crate::state::AppState;
+
+#[tauri::command]
+/// create yDoc for a workspace
+pub async fn create_user<'s>(
+  state: tauri::State<'s, AppState>,
+  parameters: CreateUser,
+) -> Result<User, String> {
+  match &state
+    .0
+    .lock()
+    .await
+    .metadata_db
+    .create_user(parameters.clone())
+    .await
+  {
+    Ok(new_user_option) => match new_user_option {
+      Some(new_user) => Ok(new_user.clone()),
+      None => Err("User creation failed".to_string()),
+    },
+    Err(error_message) => Err(error_message.to_string()),
+  }
+}