Print suggested empty directory cleanup and clean lint.

src/lib.rs

@@ -329,17 +329,6 @@ impl Movie {
             }))
         }
     }
-
-    fn min_resolution(&self) -> Option<Resolution> {
-        if self.files.is_empty() {
-            None
-        } else {
-            Some(self.files.iter().fold(
-                Resolution(usize::max_value(), usize::max_value()),
-                |acc, (_, cmd)| std::cmp::min(acc, cmd.largest_dimension().unwrap()),
-            ))
-        }
-    }
 }
 
 impl Display for Movie {
@@ -671,7 +660,7 @@ impl MovieLibrary {
         Ok(movies_from_paths_compact_metadata(p_cmd))
     }
 
-    pub fn videos(&self) -> Result<(HashMap<String, CompactMetadata>), Error> {
+    pub fn videos(&self) -> Result<HashMap<String, CompactMetadata>, Error> {
         let path = Path::new(&self.root).join(COMPACT_METADATA_FILENAME);
         let f = File::open(&path).context(format!("open {}", path.display()))?;
         let r = BufReader::new(f);

src/main.rs

@@ -261,10 +261,11 @@ fn main() -> Result<(), Box<dyn Error>> {
         Command::EmptyDirs => {
             let lib = MovieLibrary::new(MOVIE_DIR);
             let dirs = lib.empty_dirs()?;
+            let root = Path::new(&lib.root);
             if !dirs.is_empty() {
                 println!("Empty directories:");
                 for d in dirs {
-                    println!("  {}", d);
+                    println!(r#"rm -rf "{}""#, root.join(d).to_string_lossy());
                 }
             }
         }