aman-kassa-flutter/lib/views/settings/setting_printer_view.dart

import 'dart:io';
import 'dart:typed_data';

import 'package:aman_kassa_flutter/core/locator.dart';
import 'package:aman_kassa_flutter/core/route_names.dart';
import 'package:aman_kassa_flutter/core/services/dialog_service.dart';
import 'package:aman_kassa_flutter/core/services/navigator_service.dart';
import 'package:aman_kassa_flutter/redux/constants/setting_const.dart';
import 'package:aman_kassa_flutter/redux/state/setting_state.dart';
import 'package:aman_kassa_flutter/redux/store.dart';
import 'package:aman_kassa_flutter/shared/app_colors.dart';
import 'package:aman_kassa_flutter/widgets/fields/aman_icon_button_horizontal.dart';
import 'package:esc_pos_bluetooth/esc_pos_bluetooth.dart';
import 'package:esc_pos_utils/esc_pos_utils.dart';
import 'package:flutter/material.dart';
import 'package:aman_kassa_flutter/views/settings/printer/PrinterTest.dart';
import 'package:flutter_redux/flutter_redux.dart';

import 'component/setting_item.dart';
import './printer/data/settings_envi.dart';
import './printer/example/check_test.dart';

class SettingPrinterView extends StatefulWidget {
  @override
  _SettingPrinterViewState createState() => _SettingPrinterViewState();
}

class _SettingPrinterViewState extends State<SettingPrinterView> {
  NavigatorService _navigatorService = locator<NavigatorService>();
  final DialogService _dialogService = locator<DialogService>();
  PrinterBluetoothManager printerManager = PrinterBluetoothManager();


  @override
  void initState() {
    super.initState();
  }


  void _testPrint() async {
    final SettingState state = Redux.store.state.settingState;
    printerManager.selectPrinter(PrinterBluetooth(state.printerBT));
    bool isIos = Platform.isIOS;
    int chunkSizeBytes = 3096;
    int queueSleepTimeMs = 50;

    if(isIos) {
      chunkSizeBytes = 75;
      queueSleepTimeMs = 10;
    }
    // TODO Don't forget to choose printer's paper
    PaperSize paper = state.printerPaperSize == SettingPrinterPaperM80 ? PaperSize.mm80 : PaperSize.mm58;
    if(SettingPrinterEncodingImage == state.printerEncoding) {
      final PosPrintResult res = await printerManager.printTicket(
          await testTicketImage(paper),
          chunkSizeBytes: chunkSizeBytes,
          queueSleepTimeMs: queueSleepTimeMs
      );
      _dialogService.showDialog(description: res.msg);
    } else {
      final PosPrintResult res = await printerManager.printTicket(
          await printTextCheck(paper, state.printerEncoding, exampleJson['check_text']),
          chunkSizeBytes: chunkSizeBytes,
          queueSleepTimeMs: queueSleepTimeMs
      );
      _dialogService.showDialog(description: res.msg);
    }

  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Настройка принтера'),
      ),
      body: Padding(
        padding: const EdgeInsets.symmetric(horizontal: 8.0),
        child: StoreConnector<AppState, SettingState>(
            converter: (store) => store.state.settingState,
            builder: (context, vm) {
              return Column(
                children: [
                  SettingItem(
                      title: 'Принтер',
                      name: vm.printerBT?.name,
                      value: vm.printerBT != null
                          ? 'BT: ${vm.printerBT.address} '
                          : 'не выбран',
                      onTap: () {
                        _navigatorService.push(SettingsPrinterBTRoute);
                      }),
                  SettingItem(
                      title: 'Кодировка',
                      name: vm.printerEncoding != null ? encoding[vm.printerEncoding] : null ,
                      onTap: () {
                        _navigatorService.push(SettingsPrinterEncodingRoute);
                      }),
                  SettingItem(
                      title: 'Ширина ленты',
                      name: vm.printerPaperSize != null ? paperSize[vm.printerPaperSize] : null ,
                      onTap: () {
                        _navigatorService.push(SettingsPrinterPaperRoute);
                      }),
                  Expanded(
                    child: Padding(
                      padding: const EdgeInsets.only(bottom: 24.0),
                      child: Column(
                        mainAxisAlignment: MainAxisAlignment.end,
                        children: [
                          AmanIconButtonHorizontal(
                            icon: Icons.local_printshop_outlined,
                            title: 'Напечатать тестовую страницу',
                            activeColor: primaryColor,
                            selected: vm.printerBT != null,
                            onPressed: () {
                              _testPrint();
                            },
                          ),
                        ],
                      ),
                    ),
                  )
                ],
              );
            }),
      ),
    );
  }
}