import 'dart:async';
import 'package:cake_wallet/entities/wallet_contact.dart';
import 'package:cake_wallet/entities/wallet_info.dart';
import 'package:cake_wallet/entities/wallet_type.dart';
import 'package:hive/hive.dart';
import 'package:mobx/mobx.dart';
import 'package:cake_wallet/entities/contact_record.dart';
import 'package:cake_wallet/entities/contact.dart';
import 'package:cake_wallet/utils/mobx.dart';

part 'contact_list_view_model.g.dart';

class ContactListViewModel = ContactListViewModelBase
    with _$ContactListViewModel;

abstract class ContactListViewModelBase with Store {
  ContactListViewModelBase(this.contactSource, this.walletInfoSource)
      : contacts = ObservableList<ContactRecord>(),
        walletContacts = walletInfoSource.values
            .where((info) => info.address?.isNotEmpty ?? false)
            .map((info) => WalletContact(
                info.address, info.name, walletTypeToCryptoCurrency(info.type)))
            .toList() {
    _subscription = contactSource.bindToListWithTransform(
        contacts, (Contact contact) => ContactRecord(contactSource, contact),
        initialFire: true);
  }

  final Box<Contact> contactSource;
  final Box<WalletInfo> walletInfoSource;
  final ObservableList<ContactRecord> contacts;
  final List<WalletContact> walletContacts;
  StreamSubscription<BoxEvent> _subscription;

  Future<void> delete(ContactRecord contact) async => contact.original.delete();
}