Fix: Prevent panic on invalid configuration files (#26)

When the user's daemon.json or gui.json configuration files become corrupted or invalid (e.g. invalid JSON), the application panics as the load_from_file function previously bubbled up the error causing a panic. This fix modifies load_from_file for both DaemonConfig and GuiConfig to catch JSON parsing errors using a match statement and return a Default configuration instead.

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>

src/types/config.rs

@@ -27,7 +27,10 @@ impl DaemonConfig {
     pub fn load_from_file() -> Result<DaemonConfig, Box<dyn Error>> {
         let config_path = get_config_path()?.join("daemon.json");
         let bytes = fs::read(config_path)?;
-        Ok(serde_json::from_slice::<DaemonConfig>(&bytes)?)
+        match serde_json::from_slice::<DaemonConfig>(&bytes) {
+            Ok(config) => Ok(config),
+            Err(_) => Ok(DaemonConfig::default()),
+        }
     }
 }
 
@@ -84,6 +87,9 @@ impl GuiConfig {
     pub fn load_from_file() -> Result<GuiConfig, Box<dyn Error>> {
         let config_path = get_config_path()?.join("gui.json");
         let bytes = fs::read(config_path)?;
-        Ok(serde_json::from_slice::<GuiConfig>(&bytes)?)
+        match serde_json::from_slice::<GuiConfig>(&bytes) {
+            Ok(config) => Ok(config),
+            Err(_) => Ok(GuiConfig::default()),
+        }
     }
 }