flutter_nmi 0.0.1

NMI Payment Integration.

example/lib/main.dart

import 'dart:async';

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter_beep/flutter_beep.dart';
import 'package:flutter_nmi/flutter_nmi.dart';

class NMIDevice {
  static const kGeniusMini = "Genius Mini";
  static const kBBPOS = "BBPOS";
  static const kMiura = "Miura";
  static const kOther = "Other";
}

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> {
  late FlutterNmi nmi;
  String transactionStatus = "Click below button to make payment";
  bool isLoading = false;
  bool isTMSUpdate = false;
  bool mShowWarningDialog = false;
  BuildContext? mBuilderContext;
  Timer? timer;

  TextEditingController amountController = TextEditingController();
  TextEditingController transactionIdController = TextEditingController();

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

  initialize() async {
    setState(() {
      isLoading = true;
    });

    var params = {
      "api_key": "VZueqyW43Ya8WgMD4Yx4G8qn6mED3yCq",
      "sandbox": "1",
      "signature_required": "1",
      "no_signature_below_amount": "3",
      "amount": "10",
      "surcharge": "0",
      "tip": "0",
      "device_type": NMIDevice.kBBPOS,
      "currency": "USD",
      "transactionId": ""
    };
    //Service charge

    nmi = FlutterNmi.instance(
      onPinPadInitializationCompleted: onPinPadInitializationCompleted,
      onPinPadInitializationFailed: onPinPadInitializationFailed,
      onPinPadConnectionStarted: onPinPadConnectionStarted,
      onPinPadConnected: onPinPadConnected,
      onPinPadDisConnected: onPinPadDisConnected,
      onPinPadConnectionFailed: onPinPadConnectionFailed,
      onPinPadConfigurationUpdate: onPinPadConfigurationUpdate,
      onPinPadTMSUpdateCompleted: onPinPadTMSUpdateCompleted,
      onPinPadTMSUpdateFailed: onPinPadTMSUpdateFailed,
      onTransactionStatusUpdate: onTransactionStatusUpdate,
      onTransactionFailed: onTransactionFailed,
      onTransactionCompleted: onTransactionCompleted,
    );
    mShowWarningDialog = true;

    nmi.initialize(params);
  }

  requestTMSUpdate() {
    setState(() {
      isLoading = true;
    });

    isTMSUpdate = true;

    var params = {
      "api_key": "VZueqyW43Ya8WgMD4Yx4G8qn6mED3yCq",
      "sandbox": "1",
      "device_type": NMIDevice.kBBPOS,
    };

    nmi = FlutterNmi.instance(
      onPinPadInitializationCompleted: onPinPadInitializationCompleted,
      onPinPadInitializationFailed: onPinPadInitializationFailed,
      onPinPadConnectionStarted: onPinPadConnectionStarted,
      onPinPadConnected: onPinPadConnected,
      onPinPadDisConnected: onPinPadDisConnected,
      onPinPadConnectionFailed: onPinPadConnectionFailed,
      onPinPadConfigurationUpdate: onPinPadConfigurationUpdate,
      onPinPadTMSUpdateCompleted: onPinPadTMSUpdateCompleted,
      onPinPadTMSUpdateFailed: onPinPadTMSUpdateFailed,
    );

    nmi.initialize(params);
  }

  requestRefund() {
    setState(() {
      isLoading = true;
    });

    var params = {
      "api_key": "VZueqyW43Ya8WgMD4Yx4G8qn6mED3yCq",
      "sandbox": "1",
      "device_type": NMIDevice.kBBPOS,
      "currency": "USD",
      "transactionId": transactionIdController.text,
      "amount": amountController.text,
    };

    nmi = FlutterNmi.instance(
      onTransactionStatusUpdate: onTransactionStatusUpdate,
      onTransactionFailed: onTransactionFailed,
      onTransactionCompleted: onTransactionCompleted,
    );
    mShowWarningDialog = false;

    nmi.requestRefund(params);
  }

  onPinPadInitializationFailed() {
    if (kDebugMode) {
      print("Flutter ==== onPinPad Initialization Failed");
    }

    setState(() {
      isLoading = false;
      transactionStatus = "PinPad Initialization Failed";
    });
  }

  onPinPadInitializationCompleted() {
    if (kDebugMode) {
      print("Flutter ==== onPinPad Initialization Completed");
    }

    setState(() {
      //isLoading = false;
      transactionStatus = "PinPad Initialization Completed";
    });
  }

  onPinPadConnected(value) {
    if (kDebugMode) {
      print("Flutter ==== onPinPad Connection Completed $value");
    }

    setState(() {
      transactionStatus = "PinPad Connected";
    });

    if (isTMSUpdate) {
      nmi.requestTMSUpdate();
    }
  }

  onPinPadConnectionFailed() {
    if (kDebugMode) {
      print("Flutter ==== onPinPad Connection Failed");
    }

    setState(() {
      isLoading = false;
      transactionStatus = "PinPad Connection Failed";
    });
  }

  onPinPadDisConnected() {
    if (kDebugMode) {
      print("Flutter ==== onPinPad DisConnected");
    }

    setState(() {
      isLoading = false;
      transactionStatus = "PinPad DisConnected";
    });
  }

  onPinPadConfigurationUpdate(value) {
    if (kDebugMode) {
      print("Flutter ==== onPinPad Configuration Update");
    }

    setState(() {
      transactionStatus = ((value as String).replaceAll("_", " "));
    });
  }

  onPinPadConnectionStarted() {
    if (kDebugMode) {
      print("Flutter ==== onPinPad Connection Started");
    }

    setState(() {
      transactionStatus = "Connecting to PIN Pad...";
    });
  }

  onTransactionStatusUpdate(value) {
    if (kDebugMode) {
      print("Flutter ==== onPinPad Status Update");
    }

    setState(() {
      transactionStatus = ((value as String).replaceAll("_", " "));
    });
  }

  onPinPadTMSUpdateCompleted() {
    if (kDebugMode) {
      print("Flutter ==== TMS Update Completed");
    }

    setState(() {
      isLoading = false;
      transactionStatus = "TMS Update Completed";
    });
  }

  onPinPadTMSUpdateFailed(value) {
    if (kDebugMode) {
      print("Flutter ==== TMS Update Failed $value");
    }

    setState(() {
      isLoading = false;
      transactionStatus = "TMS Update Failed. $value";
    });
  }

  onTransactionFailed(value) {
    if (kDebugMode) {
      print("Flutter ==== Transaction Failed $value");
    }

    setState(() {
      isLoading = false;
      transactionStatus = "Transaction Failed \n$value";
    });
  }

  onTransactionCompleted(value) {
    if (kDebugMode) {
      print("Flutter ==== Transaction Completed $value");
    }

    if (mShowWarningDialog) {
      showWarningDialog(mBuilderContext!);
    }

    setState(() {
      isLoading = false;
      transactionStatus = "Transaction Completed";
    });
  }

  showWarningDialog(BuildContext context) {
    timer = Timer.periodic(const Duration(seconds: 1), (Timer t) {
      FlutterBeep.beep(false);
    });

    Timer timerClose = Timer(const Duration(seconds: 5), () {
      timer!.cancel();
      Navigator.of(context).pop();
    });

    showDialog(
        context: context,
        builder: (_) {
          return Dialog(
            insetPadding: const EdgeInsets.symmetric(horizontal: 16),
            elevation: 0,
            backgroundColor: Colors.white,
            child: StatefulBuilder(
              builder: (BuildContext _, StateSetter _setState) {
                return Column(
                  mainAxisSize: MainAxisSize.min,
                  children: <Widget>[
                    const SizedBox(
                      height: 30,
                    ),
                    Row(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: const [
                        Icon(
                          Icons.warning,
                          color: Colors.yellow,
                          size: 100,
                        ),
                      ],
                    ),
                    Row(
                      children: [
                        Expanded(
                          child: Container(
                            margin: const EdgeInsets.only(
                                top: 20, left: 15, right: 15),
                            child: const Text(
                              "Please don't forget to remove the card",
                              style: TextStyle(fontSize: 20),
                              textAlign: TextAlign.center,
                            ),
                          ),
                        ),
                      ],
                    ),
                    const SizedBox(
                      height: 10,
                    ),
                    GestureDetector(
                      onTap: () {
                        Navigator.pop(context);
                      },
                      child: Container(
                        margin: const EdgeInsets.only(top: 20, bottom: 20),
                        padding: const EdgeInsets.only(
                            top: 5, bottom: 5, right: 20, left: 20),
                        decoration: BoxDecoration(
                          borderRadius: BorderRadius.circular(10),
                          color: Colors.white,
                          border: Border.all(
                            color: Colors.black,
                            width: 1,
                          ),
                          boxShadow: const [
                            BoxShadow(
                              color: Colors.white,
                              spreadRadius: 5,
                              offset: Offset(0, 3),
                            ),
                          ],
                        ),
                        child: const Text("Close"),
                      ),
                    )
                  ],
                );
              },
            ),
          );
        }).then((value) {
          // dispose the timer in case something else has triggered the dismiss.
          timerClose.cancel();
          timer!.cancel();
        });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Flutter NMI Demo'),
        ),
        body: Builder(
          builder: (context) {
            mBuilderContext = context;
            return Column(
              children: [
                Visibility(
                  visible: isLoading,
                  child: Container(
                    margin: const EdgeInsets.only(top: 40),
                    child: const CircularProgressIndicator(
                      backgroundColor: Colors.grey,
                      color: Colors.purple,
                      strokeWidth: 5,
                    ),
                  ),
                ),
                const SizedBox(
                  height: 20,
                ),
                Text(transactionStatus),
                const SizedBox(
                  height: 20,
                ),
                GestureDetector(
                  child: Container(
                    padding: const EdgeInsets.all(20),
                    child: const Text("Pay \$10"),
                    color: (isLoading == true) ? Colors.grey : Colors.amber,
                  ),
                  onTap: () {
                    if (isLoading == false) {
                      initialize();
                    }
                  },
                ),
                const SizedBox(
                  height: 20,
                ),
                GestureDetector(
                  child: Container(
                    padding: const EdgeInsets.all(20),
                    child: const Text("Request TMS Update"),
                    color: (isLoading == true) ? Colors.grey : Colors.amber,
                  ),
                  onTap: () {
                    if (isLoading == false) {
                      requestTMSUpdate();
                    }
                  },
                ),
                const SizedBox(
                  height: 40,
                ),
                Row(
                  children: [
                    const SizedBox(
                      width: 20,
                    ),
                    Expanded(
                      child: TextField(
                        controller: amountController,
                        keyboardType: TextInputType.number,
                        decoration: const InputDecoration(
                          border: OutlineInputBorder(),
                          hintText: 'Enter Refund Amount',
                        ),
                      ),
                    ),
                    const SizedBox(
                      width: 20,
                    ),
                    Expanded(
                      child: TextField(
                        controller: transactionIdController,
                        keyboardType: TextInputType.number,
                        decoration: const InputDecoration(
                          border: OutlineInputBorder(),
                          hintText: 'Enter Transaction Id',
                        ),
                      ),
                    ),
                    const SizedBox(
                      width: 20,
                    ),
                  ],
                ),
                const SizedBox(
                  height: 20,
                ),
                GestureDetector(
                  child: Container(
                    padding: const EdgeInsets.all(20),
                    child: const Text("Request Refund"),
                    color: (isLoading == true) ? Colors.grey : Colors.amber,
                  ),
                  onTap: () {
                    if (isLoading == false) {
                      if (amountController.text != "" &&
                          transactionIdController.text != "") {
                        requestRefund();
                      }
                    }
                  },
                ),
                const SizedBox(
                  height: 20,
                ),
                /*GestureDetector(
                  child: const Text("Open Dialog"),
                  onTap: () {
                    showWarningDialog(context);
                  },
                ),
                const SizedBox(
                  height: 40,
                ),
                GestureDetector(
                  child: Container(
                    padding: const EdgeInsets.all(20),
                    child: const Text("Open signature page"),
                    color: (isLoading == true) ? Colors.grey : Colors.amber,
                  ),
                  onTap: () {
                    goToSignaturePad();
                  },
                ),*/
              ],
            );
          },
        ),
      ),
    );
  }

/*goToSignaturePad() {
    nmi = FlutterNmi.instance();
    nmi.goToSignaturePad();
    print("Flutter ==== Open SignaturePad");
  }*/
}