feat: load invoice templates from JSON files in data/templates directory

src-tauri/src/lib.rs

@@ -9,6 +9,7 @@ mod os_detection;
 
 pub struct AppState {
     pub db: Mutex<Connection>,
+    pub data_dir: PathBuf,
 }
 
 fn get_data_dir() -> PathBuf {
@@ -27,6 +28,7 @@ pub fn run() {
 
     let conn = Connection::open(&db_path).expect("Failed to open database");
     database::init_db(&conn).expect("Failed to initialize database");
+    commands::seed_default_templates(&data_dir);
 
     tauri::Builder::default()
         .plugin(tauri_plugin_window_state::Builder::new().build())
@@ -35,7 +37,7 @@ pub fn run() {
         .plugin(tauri_plugin_fs::init())
         .plugin(tauri_plugin_notification::init())
         .plugin(tauri_plugin_global_shortcut::Builder::new().build())
-        .manage(AppState { db: Mutex::new(conn) })
+        .manage(AppState { db: Mutex::new(conn), data_dir: data_dir.clone() })
         .invoke_handler(tauri::generate_handler![
             commands::get_clients,
             commands::create_client,
@@ -90,6 +92,7 @@ pub fn run() {
             commands::save_binary_file,
             commands::open_mini_timer,
             commands::close_mini_timer,
+            commands::get_invoice_templates,
         ])
         .setup(|app| {
             #[cfg(desktop)]