feat: add file name indicator at the top of the editor buffer

src/edit.rs

@@ -1,5 +1,4 @@
 use lofty::config::WriteOptions;
-use lofty::prelude::ItemKey::AlbumTitle;
 use lofty::tag::TagItem;
 use lofty::tag::TagType::VorbisComments;
 use lofty::tag::{ItemKey, ItemValue};
@@ -14,6 +13,11 @@ pub fn edit(file_path: PathBuf, mut tag: Tag) -> std::io::Result<()> {
     let tmp_file = PathBuf::from("/tmp/keks-sort-metadata");
     let editor = var("EDITOR").unwrap();
     let mut file = File::create(&tmp_file)?;
+    writeln!(
+        file.try_clone()?,
+        "------------ {:?} ------------",
+        file_path
+    )?;
     for item in tag.items() {
         writeln!(
             file,
@@ -35,7 +39,8 @@ pub fn edit(file_path: PathBuf, mut tag: Tag) -> std::io::Result<()> {
 
     let parsed = parse(&editable);
     for (key, value) in parsed {
-        let item_key = ItemKey::from_key(VorbisComments, &key).expect("Failed to get item key");
+        let item_key =
+            ItemKey::from_key(VorbisComments, &key).expect("ERROR: Failed to get item key");
         let item = TagItem::new(item_key, ItemValue::Text(value));
         tag.insert(item.clone());
     }