Add option to login with only a token (#427)

* Add login with token

src/api/auth/mod.rs

@@ -1,5 +1,41 @@
+use std::sync::{Arc, RwLock};
+
 pub use login::*;
 pub use register::*;
 
+use crate::{
+    errors::ChorusResult,
+    gateway::Gateway,
+    instance::{ChorusUser, Instance},
+    types::{GatewayIdentifyPayload, User},
+};
+
 pub mod login;
 pub mod register;
+
+impl Instance {
+    /// Logs into an existing account on the spacebar server, using only a token.
+    pub async fn login_with_token(&mut self, token: String) -> ChorusResult<ChorusUser> {
+        let object_result = self.get_user(token.clone(), None).await;
+        if let Err(e) = object_result {
+            return Result::Err(e);
+        }
+
+        let user_settings = User::get_settings(&token, &self.urls.api, &mut self.clone())
+            .await
+            .unwrap();
+        let mut identify = GatewayIdentifyPayload::common();
+        let gateway = Gateway::new(self.urls.wss.clone()).await.unwrap();
+        identify.token = token.clone();
+        gateway.send_identify(identify).await;
+        let user = ChorusUser::new(
+            Arc::new(RwLock::new(self.clone())),
+            token.clone(),
+            self.clone_limits_if_some(),
+            Arc::new(RwLock::new(user_settings)),
+            Arc::new(RwLock::new(object_result.unwrap())),
+            gateway,
+        );
+        Ok(user)
+    }
+}