add: ability to delete from ledger

src/main.rs

@@ -129,6 +129,31 @@ async fn main() {
 
         // ...
         return;
+    } else if args.recursive && args.delete {
+        // delete ledger
+        let path = PathBuf::from(args.input);
+        let ledger = Ledger::read(path.clone().into());
+
+        if args.engine == "fs" {
+            for file in ledger.files {
+                FsEngine
+                    .delete(file)
+                    .await
+                    .expect("failed to reconstruct file");
+            }
+        } else if args.engine == "rentry" {
+            let mut engine = RentryEngine::new();
+            engine.auth().await.expect("failed to extract csrf token");
+
+            for file in ledger.files {
+                engine.delete(file).await.expect("failed to delete file");
+            }
+        } else {
+            panic!("unknown engine type");
+        };
+
+        remove_file(path).expect("failed to delete file descriptor");
+        return;
     }
 
     if args.delete {