import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../../core/api/api_client.dart';
import '../events/providers.dart';
import '../home/providers.dart';
import '../portfolio/providers.dart';
import 'data/imports_api.dart';

final importsApiProvider = Provider<ImportsApi>((ref) => ImportsApi(ref.watch(apiProvider).dio));

/// The list on `/imports`. Not auto-disposed by status: the filter is a separate provider so
/// changing it refetches without rebuilding the page state.
final importsStatusFilterProvider = StateProvider<String?>((ref) => null);

final importsListProvider = FutureProvider.autoDispose<List<ImportPreview>>((ref) async {
  final status = ref.watch(importsStatusFilterProvider);
  return ref.watch(importsApiProvider).list(status: status);
});

/// A single import's preview. For an uncommitted import the server recomputes counts and
/// reconciliation on every read, so this is deliberately re-fetched rather than cached from
/// the list response.
final importPreviewProvider =
    FutureProvider.autoDispose.family<ImportPreview, int>((ref, id) async {
  return ref.watch(importsApiProvider).get(id);
});

/// Everything whose numbers change once events land in (or move inside) the ledger:
/// portfolio, holdings, allocation, the value series, the dashboard and the event list.
/// Called after a successful commit and after every pending-instrument resolve.
void invalidateLedgerDependents(WidgetRef ref) {
  invalidatePortfolioProviders(ref);
  invalidateHomeProviders(ref);
  ref.invalidate(eventsControllerProvider);
}