check if path exists (without extension)

src/file_sink.rs

@@ -22,17 +22,14 @@ impl FileSink {
 }
 
 impl Open for FileSink {
+	// use the unwrap_or_else method instead of the if let statement to handle the absence of a path value
     fn open(path: Option<String>, _audio_format: AudioFormat) -> Self {
-        if let Some(path) = path {
+        let file = path.unwrap_or_else(|| panic!());
-            let file = path;
         FileSink {
             sink: file,
             content: Vec::new(),
             metadata: None
         }
-        } else {
-            panic!();
-        }
     }
 }
 

src/main.rs

@@ -3,6 +3,7 @@ mod file_sink;
 extern crate rpassword;
 
 use std::{path::PathBuf};
+use std::path::Path;
 
 use librespot::{core::authentication::Credentials, metadata::Playlist};
 use librespot::core::config::SessionConfig;
@@ -82,6 +83,9 @@ async fn download_tracks(session: &Session, destination: PathBuf, tracks: Vec<Sp
         let joined_path = destination.join(&filename);
         let path = joined_path.to_str().unwrap();
         bar.set_message(full_track_name.as_str());
+        
+        let path_with_no_extension = Path::new(path).with_extension("");
+        if !path_with_no_extension.exists() {
 			let mut file_sink = file_sink::FileSink::open(Some(path.to_owned()), librespot::playback::config::AudioFormat::S16);
 			file_sink.add_metadata(metadata);
 			let (mut player, _) = Player::new(player_config.clone(), session.clone(), None, move || {
@@ -91,6 +95,10 @@ async fn download_tracks(session: &Session, destination: PathBuf, tracks: Vec<Sp
 			player.await_end_of_track().await;
 			player.stop();
 			bar.inc(1);
+        } else {
+            println!("File already exists: {}", path);
+			bar.inc(1);
+        }
     }
     bar.finish();
 }