feat(gui): Tor toggle (#300)

* re-add tor info box, show switch for toggling tor

* add use_tor to TauriSettings, only initialize tor client when it's true

* add warning log message when not using tor client

* change the label text of the switch, fail to align switch with SettingsBox icons

* move Tor settings to SettingsBox

swap/src/cli/api.rs

@@ -394,6 +394,12 @@ impl ContextBuilder {
         };
 
         let initialize_tor_client = async {
+            // Don't init a tor client unless we should use it.
+            if !self.tor {
+                tracing::warn!("Internal Tor client not enabled, skipping initialization");
+                return Ok(None);
+            }
+
             self.tauri_handle.emit_context_init_progress_event(
                 TauriContextStatusEvent::Initializing(vec![
                     TauriPartialInitProgress::EstablishingTorCircuits(

swap/src/cli/api/tauri_bindings.rs

@@ -133,7 +133,7 @@ impl TauriHandle {
             let request_id = Uuid::new_v4();
             let now_secs = SystemTime::now()
                 .duration_since(UNIX_EPOCH)
-                .unwrap()
+                .expect("it is later than the begin of the unix epoch")
                 .as_secs();
             let expiration_ts = now_secs + timeout_secs;
 
@@ -501,4 +501,6 @@ pub struct TauriSettings {
     /// The URL of the Electrum RPC server e.g `ssl://bitcoin.com:50001`
     #[typeshare(serialized_as = "string")]
     pub electrum_rpc_url: Option<Url>,
+    /// Whether to initialize and use a tor client.
+    pub use_tor: bool,
 }

swap/src/protocol/bob/swap.rs

@@ -164,7 +164,7 @@ async fn next_state(
             let btc_lock_amount = bitcoin::Amount::from_sat(
                 signed_tx
                     .output
-                    .get(0)
+                    .first()
                     .context("Failed to get lock amount")?
                     .value,
             );