import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:mobile_scanner/mobile_scanner.dart';
import 'package:seshat/domain/models/book.dart';
import 'package:seshat/domain/models/owner.dart';
import 'package:seshat/utils/result.dart';

class AddViewModel extends ChangeNotifier {
  AddViewModel();

  /*
 * ====================
 * =====[ OWNERS ]=====
 * ====================
*/

  Owner? _currentOwner;
  Owner? get currentOwner => _currentOwner;
  set currentOwner(Owner? owner) {
    _currentOwner = owner;
    notifyListeners();
  }

  final List<Owner> _owners = [];

  List<Owner>? get owners => _owners;

  Owner addOwner(String firstName, String lastName, String contact) {
    if (_owners.isEmpty) {
      _owners.add(
        Owner(
          firstName: firstName,
          lastName: lastName,
          contact: contact,
          id: 1,
        ),
      );
    } else {
      _owners.add(
        Owner(
          firstName: firstName,
          lastName: lastName,
          contact: contact,
          id: _owners.last.id + 1,
        ),
      );
    }
    notifyListeners();
    return Owner(
      firstName: firstName,
      lastName: lastName,
      contact: contact,
      id: 0,
    );
  }

  /*
 * ===================
 * =====[ PRICE ]=====
 * ===================
*/

  bool _askPrice = true;
  bool get askPrice => _askPrice;
  set askPrice(bool newValue) {
    _askPrice = newValue;
    notifyListeners();
  }

  /*
 * =================================
 * =====[ BOOKS AND INSTANCES ]=====
 * =================================
*/

  /// Sends an api request with a [bacorde], then gets the [Book] that was
  /// either created or retrieved. Sens the [Book] back wrapped in a [Result].
  Future<Result<Book>> scanBook(BarcodeCapture barcode) async {
    return Result.ok(
      Book(
        author: "Patrick K. Dewdney",
        ean: barcode.barcodes.first.rawValue!,
        id: 56,
        priceNew: "50 EUR",
        title: "Les chiens et la charrue",
      ),
    );
  }

  /// Sens an api request with
  // Result<BookInstance> newBookInstance() {

  // };
}