audio error handling

src/main.rs

@@ -10,6 +10,29 @@ use std::process::Command;
 
 const SPACING: i32 = 16;
 
+fn error_popup(message: &str) {
+    let popup = gtk::Window::new(gtk::WindowType::Toplevel);
+    popup.set_title("error");
+    popup.set_border_width(SPACING as u32);
+    popup.set_position(gtk::WindowPosition::Center);
+    popup.set_default_size(256, 64);
+
+    let vertical = gtk::Box::new(Orientation::Vertical, SPACING);
+    popup.add(&vertical);
+
+    let message = gtk::Label::new(Some(message));
+    vertical.add(&message);
+
+    let button_ok = gtk::Button::with_label("OK");
+    vertical.add(&button_ok);
+
+    popup.show_all();
+
+    button_ok.connect_clicked(move |_| unsafe {
+        popup.destroy();
+    });
+}
+
 fn get_data_dir() -> PathBuf {
     let mut data_dir = dirs::data_dir().expect("Couldn't find user data directory");
 
@@ -47,10 +70,20 @@ fn build_ui(application: &gtk::Application) {
         let file = File::open(&path)
             .expect("Couldn't open audio file");
 
-        let source = rodio::Decoder::new(BufReader::new(file))
+        let source = rodio::Decoder::new(
-            .expect("Couldn't decode audio");
+            BufReader::new(file)
+        );
 
-        let source = source.repeat_infinite();
+        if source.is_err() {
+            error_popup(&format!(
+                "Couldn't parse file {}. \n{}.",
+                path.to_str().unwrap(),
+                source.err().unwrap()
+            ));
+            continue;
+        }
+
+        let source = source.unwrap().repeat_infinite();
 
         let sink = Sink::new(&device);
         sink.append(source);
@@ -97,14 +130,15 @@ fn build_ui(application: &gtk::Application) {
     let row_add = gtk::Box::new(Orientation::Horizontal, SPACING);
     row_add.set_homogeneous(true);
 
-    let button_open_dir = gtk::Button::with_label("manage sounds");
+    let button_manage_sounds = gtk::Button::with_label("manage sounds");
-    button_open_dir.connect_clicked(|_|{
+
+    button_manage_sounds.connect_clicked(|_| {
         let mut file_manager = Command::new("xdg-open");
         file_manager.arg(get_data_dir());
         file_manager.output().unwrap();
     });
-    row_add.add(&button_open_dir);
 
+    row_add.add(&button_manage_sounds);
     vertical.add(&row_add);
 
     window.show_all();