Change using Result

src/app.rs

@@ -24,13 +24,13 @@ pub(crate) struct App {
 }
 
 impl App {
-    pub fn new() -> App {
+    pub fn new() -> Self {
         let app_conf =
-            if APP_CONIFG_FILE_PATH.exists() { ApplicationConfig::from_file(&APP_CONIFG_FILE_PATH) }
+            if APP_CONIFG_FILE_PATH.exists() { ApplicationConfig::from_file(&APP_CONIFG_FILE_PATH).unwrap() }
             else { ApplicationConfig::new() };
         Self::initialize();
         let db_conn = Self::establish_db_connection(app_conf.clone());
-        App {
+        Self {
             running: true,
             events: EventHandler::new(Duration::from_millis(app_conf.basic_config.tick_rate)),
             db_connection: db_conn,
@@ -67,7 +67,7 @@ impl App {
     fn update(&mut self, event: Event) -> Result<()> {
         if let Event::Key(key) = event && event::KeyEventKind::is_press(&key.kind) {
             match key.code {
-                Char('q') => self.quit(),
+                Char('q') => self.quit()?,
                 _ => {}
             }
         }
@@ -129,10 +129,11 @@ impl App {
 
 // event handlers
 impl App {
-    fn quit(&mut self) {
+    fn quit(&mut self) -> Result<()> {
         self.running = false;
         self.app_config
             .clone()
-            .write_to_file(APP_CONIFG_FILE_PATH.to_path_buf());
+            .write_to_file(APP_CONIFG_FILE_PATH.to_path_buf())?;
+        Ok(())
     }
 }