Updating + Profile Repairs + Performance Improvements (#97)

* repairing

* Main framework for updating

* add jsconfig

* more work

* Improve performance

* Finish updating

* run lint

theseus/src/state/settings.rs

@@ -1,4 +1,5 @@
 //! Theseus settings file
+use crate::{jre, State};
 use serde::{Deserialize, Serialize};
 use std::path::Path;
 use tokio::fs;
@@ -63,6 +64,29 @@ impl Settings {
         }
     }
 
+    pub async fn update_java() {
+        let res = async {
+            let state = State::get().await?;
+            let settings_read = state.settings.write().await;
+
+            if settings_read.java_globals.count() == 0 {
+                drop(settings_read);
+                let java_globals = jre::autodetect_java_globals().await?;
+                state.settings.write().await.java_globals = java_globals;
+            }
+
+            Ok::<(), crate::Error>(())
+        }
+        .await;
+
+        match res {
+            Ok(()) => {}
+            Err(err) => {
+                log::warn!("Unable to update launcher java: {err}")
+            }
+        };
+    }
+
     #[tracing::instrument(skip(self))]
     pub async fn sync(&self, to: &Path) -> crate::Result<()> {
         fs::write(to, serde_json::to_vec(self)?)