lemmur-app-android/lib/util/delayed_action.dart

import 'package:flutter/material.dart';
import 'package:lemmy_api_client/v3.dart';

import '../hooks/delayed_loading.dart';

/// Executes an API action that uses [DelayedLoading], has a try-catch
/// that displays a [SnackBar] when the action fails
Future<void> delayedAction<T>({
  required BuildContext context,
  required DelayedLoading delayedLoading,
  required String instanceHost,
  required LemmyApiQuery<T> query,
  void Function(T)? onSuccess,
  void Function(T?)? cleanup,
}) async {
  T? val;
  try {
    delayedLoading.start();
    val = await LemmyApiV3(instanceHost).run<T>(query);
    onSuccess?.call(val as T);
  } catch (e) {
    ScaffoldMessenger.of(context)
        .showSnackBar(SnackBar(content: Text(e.toString())));
  } finally {
    cleanup?.call(val);
    delayedLoading.cancel();
  }
}