[refactor] abstracted logging initialization and app settings loading into dedicated functions to streamline main.rs and improve code readability

backend-rust/src/main.rs

@@ -15,23 +15,11 @@ use tracing_subscriber::EnvFilter;
 
 #[tokio::main]
 async fn main() -> Result<()> {
-    tracing_subscriber::fmt()
-        .with_target(false)
-        .compact()
-        .with_env_filter(EnvFilter::from_default_env())
-        .json() // For Production
-        .init();
+    init_logging();
 
     info!("Starting server");
 
-    AppSettings::default();
-    let mut app_settings = AppSettings::get_app_settings();
-
-    AppSettings::ensure_default_directory(&app_settings)
-        .expect("Failed to create default directory");
-
-    app_settings.config = ConfigFile::load_from_file(&AppSettings::get_app_settings())
-        .expect("Failed to load config file");
+    let app_settings = load_app_settings();
 
     let pool = db::initialize_db(&app_settings).await?;
     let app = create_app(pool);
@@ -65,6 +53,32 @@ async fn health_check() -> &'static str {
     "OK"
 }
 
+fn init_logging() {
+    tracing_subscriber::fmt()
+        .with_target(false)
+        .compact()
+        // .with_env_filter(EnvFilter::from_default_env())
+        // .json() // For Production
+        .init();
+}
+
+fn load_app_settings() -> AppSettings {
+    AppSettings::default();
+    let app_settings = AppSettings::get_app_settings();
+
+    AppSettings::ensure_default_directory(&app_settings)
+        .expect("Failed to create default directory");
+
+    let config = ConfigFile::load_from_file(&AppSettings::get_app_settings())
+        .expect("Failed to load config file");
+
+    let app_settings = AppSettings {
+        config,
+        ..app_settings
+    };
+    app_settings
+}
+
 async fn shutdown_signal() {
     let ctrl_c = async {
         signal::ctrl_c()