fix: close files

related to #29

Cargo.toml

@@ -6,6 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+anyhow = "1.0.80"
 itertools = "0.10.5"
 nanoid = "0.4.0"
 nucleo-matcher = { path = "./matcher" }

src/main.rs

@@ -333,17 +333,19 @@ impl LanguageServer for Backend {
     }
 
     async fn did_open(&self, params: DidOpenTextDocumentParams) {
-        let _ = self
+        let _new_files = self
             .bind_opened_files_mut(|files| {
                 // diagnostics will only be published for the files that are opened; We must track which files are opened
                 let path = params_path!(params)?;
 
                 files.insert(path);
 
-                Ok(())
+                Ok(files.clone())
             })
             .await;
 
+        self.client.log_message(MessageType::LOG, "Added file").await;
+
         self.update_vault(TextDocumentItem {
             uri: params.text_document.uri,
             text: params.text_document.text,
@@ -363,6 +365,20 @@ impl LanguageServer for Backend {
         }
     }
 
+    async fn did_close(&self, params: DidCloseTextDocumentParams) {
+        let removed_file = self
+            .bind_opened_files_mut(|files| {
+                let path = params_path!(params)?;
+
+                Ok(files.take(&path))
+            }).await;
+
+        if let Ok(Some(file)) = removed_file {
+            self.client.log_message(MessageType::LOG, format!("Remove file {:?}", file)).await;
+        }
+
+    }
+
     async fn did_change(&self, mut params: DidChangeTextDocumentParams) {
         self.update_vault(TextDocumentItem {
             uri: params.text_document.uri,