Only add the "format document with sqlfluff" button when using dbt-co…

…re-interface

src/extension.ts

@@ -93,16 +93,20 @@ export const activate = (context: vscode.ExtensionContext) => {
   };
   context.subscriptions.push(vscode.commands.registerCommand(fixCommand, fixCommandHandler));
 
-  // Adds a "Fix document with sqlfluff" button to the lower right corner of
-  // the VS Code window
-  const customStatusBarItem = vscode.window.createStatusBarItem(vscode.StatusBarAlignment.Right);
-  customStatusBarItem.text = "$(pencil)";
-  customStatusBarItem.tooltip = "Fix document with sqlfluff";
-  customStatusBarItem.command = fixCommand;
-  customStatusBarItem.show();
-
-  const formatSelection = "sqlfluff.format.selection";
-  if (!Configuration.dbtInterfaceEnabled()) {
+  if (Configuration.dbtInterfaceEnabled()) {
+      // When dbt-core-interface is enabled, adds a "Format document with
+      // sqlfluff" button to the lower right corner of the VS Code window. Use
+      // of the word "format" is deliberate, as the button hits the
+      // dbt-core-interface "/format" endpoint, equivalent to "sqlfluff format".
+      const customStatusBarItem = vscode.window.createStatusBarItem(vscode.StatusBarAlignment.Right);
+      customStatusBarItem.text = "$(pencil)";
+      customStatusBarItem.tooltip = "Format document with sqlfluff";
+      customStatusBarItem.command = fixCommand;
+      customStatusBarItem.show();
+  }
+  else {
+    // When dbt-core-interface is not enabled, adds a "format selection" action.
+    const formatSelection = "sqlfluff.format.selection";
     const formatSelectionHandler = async () => {
       if (vscode.window.activeTextEditor) {
         // Check if available language