import 'package:flutter/material.dart';
import 'package:intl/intl.dart';
import 'package:satu/core/models/dictionary/contragent/contragent_response_entity.dart';
import 'package:satu/widgets/fields/line_tile.dart';

import '../../../../core/services/buy_service.dart';
import '../../../../core/services/navigator_service.dart';
import '../../../../core/utils/locator.dart';
import '../../../../routes/route_names.dart';
import '../../../../widgets/bar/products_app_bar.dart';
import '../../../../widgets/buttons/busy_button.dart';

class BuyAddView extends StatefulWidget {
  const BuyAddView({Key? key}) : super(key: key);

  @override
  State<BuyAddView> createState() => _BuyAddViewState();
}

class _BuyAddViewState extends State<BuyAddView> {
  ContragentResponseEntity? _contragent;
  DateTime _date = DateTime.now();
  final BuyService _service = locator<BuyService>();
  DateFormat _dateFormat = DateFormat('dd.MM.yyyy');

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: const ProductsAppBar(
        title: 'Новая накладная покупки',
      ),
      body: Column(
        children: [
          Expanded(
            child: ListView(
              children: [
                LineTile(
                  key: const Key('BuyAddView_Contragent'),
                  _contragent?.name ?? 'Выберите контрагента',
                  onTap: () async {
                    ContragentResponseEntity? entity =
                        await locator<NavigatorService>()
                                .push(contragentSelectViewRoute)
                            as ContragentResponseEntity?;
                    if (entity != null) {
                      setState(() {
                        _contragent = entity;
                      });
                    }
                  },
                  labelText: 'Контрагент',
                ),
                LineTile(
                  key: const Key('BuyAddView_Date'),
                  _dateFormat.format(_date),
                  onTap: () async {

                    DateTime? pickedDate = await showDatePicker(
                        context: context,
                        initialDate: DateTime.now(), //get today's date
                        firstDate:DateTime(2000), //DateTime.now() - not to allow to choose before today.
                        lastDate: DateTime(2101)
                    );
                    if (pickedDate != null) {
                      setState(() {
                        _date = pickedDate;
                      });
                    }

                  },
                  labelText: 'Дата накладной',
                ),
              ],
            ),
          ),
          Padding(
            padding: const EdgeInsets.symmetric(horizontal: 45, vertical: 30),
            child: BusyButton(
              title: 'СОЗДАТЬ',
              busy: false,
              onPressed: ()  async {

                if (_contragent == null) {
                  return;
                }


                bool result = await _service.createBuy(_contragent!, _date);
                if (result) {
                  locator<NavigatorService>().pop(result);
                }
              },
            ),
          ),
        ],
      ),
    );
  }
}