pos_sdk 0.0.7

The implementation of the pos_sdk, specific for v1.1.14 poslink reservation.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'dart:async';
import 'package:flutter/services.dart';
import 'package:pos_sdk/PaxSdkPlugin.g.dart';
import 'package:pos_sdk/pax_card_payment_gateway.dart';

void main() {
  runApp(const MyApp());
}

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

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _platformVersion = 'Unknown';
  late PaxCardPaymentGateway gw;

  @override
  void initState() {
    super.initState();
    gw = PaxCardPaymentGateway();
    initPlatformState();
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    String platformVersion;
    // Platform messages may fail, so we use a try/catch PlatformException.
    // We also handle the message potentially returning null.
    try {
      final info = await gw.getTerminalInfo();
      debugPrint('info $info');

      Map<String?, String?> result = await PosPayApi().getTerminalInfo();
      platformVersion =
          "\nMerchant Name: ${result["merchantName"]}\nMerchant ID: ${result["merchantID"]}\nTerminal ID: ${result["terminalID"]}\nDevice Model: ${result["deviceModel"]}\nDevice Serial: ${result["deviceSerial"]}";
    } on PlatformException {
      platformVersion = 'Failed to get platform version.';
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;

    setState(() {
      _platformVersion = platformVersion;
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Plugin example app'),
        ),
        body: Scaffold(
          body: Center(
            child: Text('Result:$_platformVersion\n'),
          ),
          floatingActionButton: Column(
            children: [
              const Spacer(),
              const Spacer(),
              const Spacer(),
              const Spacer(),
              const Spacer(),
              const Spacer(),
              const Spacer(),
              const Spacer(),
              Row(
                children: [
                  const Spacer(),
                  //Refund Button
                  FloatingActionButton(
                    onPressed: () async {
                      POSResult result = await PosPayApi().refund("24.99");
                      setState(() {
                        _platformVersion = getResultDetails(result);
                      });
                    },
                    child: const Icon(Icons.refresh),
                  ),
                  const Spacer(),
                  //Inquiry button
                  FloatingActionButton(
                    onPressed: () async {
                      POSResult result = await PosPayApi().inquiry();

                      setState(() {
                        _platformVersion = getResultDetails(result);
                      });

                      debugPrint(result.toString());
                    },
                    child: const Icon(Icons.question_mark),
                  ),
                  const Spacer(),

                  //reprint button
                  FloatingActionButton(
                      onPressed: () async {
                        POSResult result = await PosPayApi().reprint("1");
                        setState(() {
                          _platformVersion = getResultDetails(result);
                        });
                        debugPrint(result.toString());
                      },
                      child: const Icon(Icons.receipt)),
                  const Spacer(),

                  // last receipt button
                  FloatingActionButton(
                      onPressed: () async {
                        POSResult result = await PosPayApi().lastReceipt();
                        debugPrint(result.toString());
                        setState(() {
                          _platformVersion = getResultDetails(result);
                        });
                      },
                      child: const Icon(Icons.receipt_long)),
                ],
              ),
              const Spacer(),
              (Row(
                children: [
                  const Spacer(),

                  //custom receipt button
                  FloatingActionButton(
                      onPressed: () async {
                        try {
                          PrinterRequest printRequest = PrinterRequest(
                              image: (await rootBundle.load("assets/logo.png"))
                                  .buffer
                                  .asUint8List(),
                              address: PrintAddress(
                                address1: "Unit 4",
                                address2: "4 karen St",
                                city: "Sandton",
                                country: 'South Africa',
                                postalCode: "1724",
                                state: "Gauteng",
                              ),
                              businessName: "Little Fish",
                              amountTendered: 1567.00,
                              currencyCode: "R",
                              header: "Welcome to little fish",
                              whatsapp: "[phone]",
                              instagram: "[e-mail]",
                              tell: "[phone]",
                              items: [
                                Inventory(
                                    itemDescription: "first item",
                                    price: 5.0,
                                    quantity: 3),
                                Inventory(
                                    itemDescription: "second item",
                                    price: 7.0,
                                    quantity: 3),
                                Inventory(
                                    itemDescription: "third item",
                                    price: 3.0,
                                    quantity: 3),
                              ],
                              taxValue: 15,
                              taxCode: "1457",
                              totalTax: 1567.00 * 0.15,
                              customerName: "Freedom Mathebula",
                              customerId:
                                  "12nuoibufbhgfkjwhagfjrahgiourhie34567",
                              sellerId:
                                  "7654dbwiyeqgfjhegjrwhgfjabjfhgrfjkr321",
                              sellerName: "Themba Mathebula",
                              footer: "Please call again!!");

                          POSResult result =
                              await PosPayApi().print(printRequest);
                          debugPrint(result.toString());
                          setState(() {
                            _platformVersion = getResultDetails(result);
                          });
                        } catch (e) {
                          if (e is PlatformException) {
                            debugPrint(e.details['message']);
                          } else {
                            debugPrint('ERROR $e');
                          }
                        }
                      },
                      child: const Icon(Icons.print)),
                  const Spacer(),

                  //charge button
                  FloatingActionButton(
                      onPressed: () async {
                        POSResult result = await PosPayApi().charge("24.99");
                        setState(() {
                          _platformVersion = getResultDetails(result);
                        });
                        debugPrint(result.toString());
                      },
                      child: const Icon(Icons.credit_card)),
                  const Spacer(),

                  //camera scan button
                  FloatingActionButton(
                      onPressed: () async {
                        ScanResult scanResult = await PosPayApi().scan();
                        debugPrint(scanResult.toString());

                        setState(() {
                          _platformVersion =
                              "${scanResult.resultString}: ${scanResult.resultFormat}";
                        });
                      },
                      child: const Icon(Icons.camera_alt)),
                  const Spacer(),
                  //infrared scan button
                  FloatingActionButton(
                    onPressed: () async {
                      ScanResult scanResult = await PosPayApi().scanHW();
                      debugPrint(scanResult.toString());
                      setState(() {
                        _platformVersion =
                            " ${scanResult.resultString}: ${scanResult.resultFormat}";
                      });
                    },
                    child: const Icon(Icons.scanner),
                  ),
                ],
              )),
              Row(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  FloatingActionButton(
                    onPressed: () async {
                      int batchNo = await PosPayApi().getBatchNo();
                      debugPrint("BatchNo: $batchNo");
                      setState(() {
                        _platformVersion = "BatchNo: $batchNo";
                      });
                    },
                    child: const Icon(Icons.tag),
                  )
                ],
              )
            ],
          ),
        ),
      ),
    );
  }

  String getResultDetails(POSResult result) {
    return "plugin message: ${result.resultMessage} \n"
        "plugin code: ${result.resultCode}\n"
        "device message: ${result.deviceMessage} \n"
        "device code: ${result.deviceCode}\n"
        "batch No: ${result.resultObject?["batchNumber"]}";
  }
}