fix: panic if track number is none

.gitignore

@@ -1,4 +1,5 @@
 /target
 /test
+/.direnv
 *.flac
 *.mp3

flake.nix

@@ -44,7 +44,6 @@
               buildInputs = [
                 rust
                 cargo-nextest
-                fish
               ];
 
               env.RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}";
@@ -52,7 +51,6 @@
 
               shellHook = ''
                 echo Entered Rust dev shell for project music-sort
-                exec fish
               '';
             };
         };

src/move_files.rs

@@ -36,12 +36,16 @@ pub fn move_files(
     create_dir_all(&dir_to_create)?;
     let target = target_dir.join(artist_dir).join(album_dir.as_ref());
 
-    let file_name = PathBuf::from(format!(
-        "0{}. {} - {}.flac",
-        track_number.unwrap(),
+    let file_name = if let Some(track_number) = track_number {
+        PathBuf::from(format!(
+            "{:02}. {} - {}.flac",
+            track_number,
             artist.unwrap(),
             title.unwrap(),
-    ));
+        ))
+    } else {
+        PathBuf::from(format!("01. {} - {}.flac", artist.unwrap(), title.unwrap(),))
+    };
 
     if should_copy {
         copy(&file_path, target.join(file_name))?;
@@ -72,6 +76,6 @@ pub fn move_files(
         remove_dir(file_path.parent().unwrap())?;
     }
 
-    println!("Imported file: {:?}", file_path.file_name().unwrap());
+    //println!("Imported file: {:?}", file_path.file_name().unwrap());
     Ok(())
 }