clarify filename

tauri/src/commands/edit.rs

@@ -1,15 +1,28 @@
 //! Editing the metadata, the style, the structure and the waypoints of the files, and the tools:
 //! reversing, cropping, reducing, timestamps, merging, cleaning...
 
-use gpx_engine::{CleanType, MergeType, SplitType, api};
+use gpx_engine::{CleanType, FileId, MergeType, Selection, SplitType, api};
 use tauri::State;
 use uuid::Uuid;
 
 use crate::state::AppState;
 
+/// Names and describes the selected files or tracks. A file on the disk is renamed with it (and back
+/// when it is undone): its name is one that a file can have, and not the one of another file.
 #[tauri::command(async)]
 pub fn metadata(state: State<AppState>, name: String, desc: String) -> api::Outcome {
-    state.run(move |e| api::metadata(e, &name, &desc))
+    state.core(move |core| {
+        let mut name = name;
+        if let Selection::File { file_ids } = core.engine.selection() {
+            for FileId(id) in file_ids.clone() {
+                name = core.workspace.valid_name(id, &name);
+                if let Err(error) = core.workspace.renamed_path(id, &name) {
+                    return api::Outcome::failed(error);
+                }
+            }
+        }
+        core.edit(move |e| api::metadata(e, &name, &desc))
+    })
 }
 
 #[tauri::command(async)]