import 'package:flutter_test/flutter_test.dart';
import 'package:mocktail/mocktail.dart';
import 'package:social_app/core/cache/cache_entry.dart';
import 'package:social_app/core/cache/cache_invalidator.dart';
import 'package:social_app/core/cache/hybrid_cache_store.dart';
import 'package:social_app/core/cache/memory_cache_store.dart';
import 'package:social_app/core/cache/persistent_cache_store.dart';
import 'package:social_app/features/todo/data/todo_api.dart';
import 'package:social_app/features/todo/data/todo_repository.dart';

class _MockTodoApi extends Mock implements TodoApi {}

void main() {
  test(
    'complete todo should optimistically remove item and invalidate pending list key',
    () async {
      final api = _MockTodoApi();
      final store = HybridCacheStore(
        memory: MemoryCacheStore(),
        persistent: PersistentCacheStore(),
      );
      final invalidator = CacheInvalidator(store: store);
      final repository = TodoRepository(
        api: api,
        store: store,
        invalidator: invalidator,
      );

      final cached = TodoResponse(
        id: 'todo_1',
        ownerId: 'u1',
        title: 't1',
        priority: 1,
        order: 0,
        status: 'pending',
        createdAt: DateTime(2026, 3, 20, 10),
        updatedAt: DateTime(2026, 3, 20, 10),
      );
      await store.write<CacheEntry<List<TodoResponse>>>(
        TodoRepository.pendingListKey,
        CacheEntry(value: [cached], fetchedAt: DateTime(2026, 3, 20, 10, 0)),
      );

      when(
        () => api.completeTodo('todo_1'),
      ).thenAnswer((_) async => cached.copyWith(status: 'completed'));

      await repository.completeTodo('todo_1');

      final updated = await store.read<CacheEntry<List<TodoResponse>>>(
        TodoRepository.pendingListKey,
      );
      expect(updated, isNull);
      expect(invalidator.wasInvalidated(TodoRepository.pendingListKey), true);
    },
  );
}