import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../core/api/api_client.dart';
import '../core/auth/auth_state.dart';
import '../core/models/page_result.dart';
import '../models/finance.dart';
import '../repositories/finance_repository.dart';

final financeRepositoryProvider = Provider<FinanceRepository>((ref) {
  return FinanceRepository(ref.watch(apiClientProvider));
});

final financeListProvider =
    AsyncNotifierProvider<FinanceListNotifier, PageResult<FinanceRecord>>(
  FinanceListNotifier.new,
);

class FinanceListNotifier extends AsyncNotifier<PageResult<FinanceRecord>> {
  int _page = 1;
  int _pageSize = 20;
  String _type = '';
  String _month = '';

  @override
  Future<PageResult<FinanceRecord>> build() {
    ref.watch(authStateProvider.select((s) => s.user?.shopId));
    return _fetch();
  }

  Future<PageResult<FinanceRecord>> _fetch() {
    return ref.read(financeRepositoryProvider).listRecords(
          type: _type.isEmpty ? null : _type,
          month: _month.isEmpty ? null : _month,
          page: _page,
          pageSize: _pageSize,
        );
  }

  void setType(String type) {
    _type = type;
    _page = 1;
    reload();
  }

  void setMonth(String month) {
    _month = month;
    _page = 1;
    reload();
  }

  void setPage(int page) {
    _page = page;
    reload();
  }

  void setPageSize(int pageSize) {
    _pageSize = pageSize;
    _page = 1;
    reload();
  }

  void reload() {
    state = const AsyncValue.loading();
    _fetch().then(
      (result) => state = AsyncValue.data(result),
      onError: (e, st) => state = AsyncValue.error(e, st),
    );
  }
}