refactor(store-example): replace load_from_store with TryFrom impl in example (#3277)

Author: gzordrai

plugins/store/examples/AppSettingsManager/src-tauri/src/app/settings.rs

@@ -10,10 +10,8 @@ pub struct AppSettings {
     pub theme: String,
 }
 
-impl AppSettings {
-    pub fn load_from_store<R: tauri::Runtime>(
-        store: &Store<R>,
-    ) -> Result<Self, Box<dyn std::error::Error>> {
+impl<R: tauri::Runtime> From<&Store<R>> for AppSettings {
+    fn from(store: &Store<R>) -> Self {
         let launch_at_login = store
             .get("appSettings.launchAtLogin")
             .and_then(|v| v.as_bool())
@@ -24,9 +22,9 @@ impl AppSettings {
             .and_then(|v| v.as_str().map(String::from))
             .unwrap_or_else(|| "dark".to_owned());
 
-        Ok(AppSettings {
+        AppSettings {
             launch_at_login,
             theme,
-        })
+        }
     }
 }

plugins/store/examples/AppSettingsManager/src-tauri/src/main.rs

@@ -18,28 +18,22 @@ fn main() {
         .setup(|app| {
             // Init store and load it from disk
             let store = app.store("settings.json")?;
+
             app.listen("store://change", |event| {
                 dbg!(event);
             });
-            let app_settings = AppSettings::load_from_store(&store);
-            match app_settings {
-                Ok(app_settings) => {
-                    let theme = app_settings.theme;
-                    let launch_at_login = app_settings.launch_at_login;
-
-                    println!("theme {theme}");
-                    println!("launch_at_login {launch_at_login}");
-                    store.set(
-                        "appSettings",
-                        json!({ "theme": theme, "launchAtLogin": launch_at_login }),
-                    );
-                }
-                Err(err) => {
-                    eprintln!("Error loading settings: {err}");
-                    // Handle the error case if needed
-                    return Err(err); // Convert the error to a Box<dyn Error> and return Err(err) here
-                }
-            }
+
+            let app_settings = AppSettings::from(store.as_ref());
+            let theme = app_settings.theme;
+            let launch_at_login = app_settings.launch_at_login;
+
+            println!("theme {theme}");
+            println!("launch_at_login {launch_at_login}");
+            store.set(
+                "appSettings",
+                json!({ "theme": theme, "launchAtLogin": launch_at_login }),
+            );
+
             Ok(())
         })
         .run(tauri::generate_context!())