Walk through filesystem and print metadata

src/main.rs

@@ -0,0 +1,30 @@
+mod filesystem;
+mod metadata;
+
+use std::env;
+use std::path::Path;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+    if args.len() != 2 {
+        eprintln!("Usage: {} <directory>", args[0]);
+        std::process::exit(1);
+    }
+
+    let dir = Path::new(&args[1]);
+
+    for path in filesystem::walk_music_files(dir) {
+        println!("{}", path.display());
+
+        match metadata::read_track_metadata(&path) {
+            Ok(Some(meta)) => {
+                let unknown = "(unknown)";
+                println!("  Title:  {}", meta.title.as_deref().unwrap_or(unknown));
+                println!("  Artist: {}", meta.artist.as_deref().unwrap_or(unknown));
+                println!("  Album:  {}", meta.album.as_deref().unwrap_or(unknown));
+            }
+            Ok(None) => println!("  (no metadata tags found)"),
+            Err(e) => eprintln!("  warning: could not read metadata: {e}"),
+        }
+    }
+}