mohemm-flutter-app/lib/dialogs/otp_dialog.dart

import 'dart:async';

import 'package:easy_localization/src/public_ext.dart';
import 'package:flutter/material.dart';
import 'package:flutter_svg/svg.dart';
import 'package:mohem_flutter_app/classes/colors.dart';
import 'package:mohem_flutter_app/extensions/int_extensions.dart';
import 'package:mohem_flutter_app/extensions/string_extensions.dart';
import 'package:mohem_flutter_app/generated/locale_keys.g.dart';
import 'package:mohem_flutter_app/widgets/button/default_button.dart';
import 'package:mohem_flutter_app/widgets/otp_widget.dart';

final ValueNotifier<String> otpFieldClear = ValueNotifier<String>("");

class OtpDialog {
  final int type;
  final int? mobileNo;
  final Function(String, TextEditingController _pinPutController) onSuccess;
  final Function onFailure;
  final BuildContext context;
  final Function onResendCode;

  int remainingTime = 120;

  Future<Null>? timer;

  static BuildContext? _context;

  static bool? _loading;

  OtpDialog(this.context, this.type, this.mobileNo, this.onSuccess, this.onFailure, {required this.onResendCode});

  GlobalKey? verifyAccountForm = GlobalKey<FormState>();

  final TextEditingController _pinPutController = TextEditingController();

  TextEditingController digit1 = TextEditingController(text: "");
  TextEditingController digit2 = TextEditingController(text: "");
  TextEditingController digit3 = TextEditingController(text: "");
  TextEditingController digit4 = TextEditingController(text: "");

  Map verifyAccountFormValue = {
    'digit1': '',
    'digit2': '',
    'digit3': '',
    'digit4': '',
  };
  final focusD1 = FocusNode();
  final focusD2 = FocusNode();
  final focusD3 = FocusNode();
  final focusD4 = FocusNode();
  String? errorMsg;

  // ProjectViewModel projectProvider;
  String displayTime = '';
  String? _code;
  dynamic setState;
  bool stopTimer = false;

  // static String signature;

  void displayDialog(BuildContext context) async {
    return showDialog(
        context: context,
        barrierColor: Colors.black.withOpacity(0.63),
        builder: (context) {
          // projectProvider = Provider.of(context);
          return Dialog(
            backgroundColor: Colors.white,
            surfaceTintColor: Colors.transparent,
            shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20)),
            insetPadding: const EdgeInsets.only(left: 21, right: 21),
            child: StatefulBuilder(builder: (context, setState) {
              if (displayTime == '') {
                startTimer(setState);
              }

              return Container(
                padding: EdgeInsets.all(21),
                child: Column(
                  mainAxisSize: MainAxisSize.min,
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    SvgPicture.asset(
                      type == 1
                          ? "assets/images/login/verify_sms.svg"
                          : type == 2
                              ? "assets/images/login/verify_whatsapp.svg"
                              : type == 3
                                  ? "assets/images/login/verify_face.svg"
                                  : 'assets/images/login/verify_thumb.svg',
                      height: 50,
                      width: 50,
                    ),
                    12.height,
                    LocaleKeys.otp.tr().toText14(),
                    LocaleKeys.verification.tr().toText24(isBold: true),
                    6.height,
                    (LocaleKeys.pleaseEnterTheVerificationCodeSentTo.tr() + ' xxxxxxxx' + mobileNo.toString().substring(mobileNo.toString().length - 3)).toText16(),
                    18.height,
                    ValueListenableBuilder<String>(
                      builder: (BuildContext context, String value, Widget? child) {
                        // This builder will only get called when the _counter
                        // is updated.
                        return Column(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: [
                            Directionality(
                              textDirection: TextDirection.ltr,
                              child: Center(
                                child: OTPWidget(
                                  autoFocus: true,
                                  controller: _pinPutController,
                                  defaultBorderColor: const Color(0xffD8D8D8),
                                  maxLength: 4,
                                  onTextChanged: (text) {},
                                  pinBoxColor: Colors.white,
                                  onDone: (code) => _onOtpCallBack(code, null),
                                  textBorderColor: const Color(0xffD8D8D8),
                                  pinBoxWidth: 60,
                                  pinBoxHeight: 60,
                                  pinTextStyle: const TextStyle(fontSize: 24.0, color: MyColors.darkTextColor),
                                  pinTextAnimatedSwitcherTransition: ProvidedPinBoxTextAnimation.scalingTransition,
                                  pinTextAnimatedSwitcherDuration: const Duration(milliseconds: 300),
                                  pinBoxRadius: 10,
                                  keyboardType: TextInputType.number,
                                ),
                              ),
                            ),
                            10.height,
                            stopTimer
                                ? Row(
                                    children: [
                                      Expanded(
                                        child: LocaleKeys.codeExpire.tr().toText16(
                                              color: MyColors.redColor,
                                            ),
                                      ),
                                      12.width,
                                      Image.asset(
                                        "assets/icons/ic_alarm.png",
                                        width: 20,
                                        height: 20,
                                        color: MyColors.redColor,
                                      ),
                                    ],
                                  )
                                : RichText(
                                    text: TextSpan(
                                      text: LocaleKeys.theVerificationCodeWillExpireIn.tr() + '\n',
                                      style: const TextStyle(fontSize: 16, fontWeight: FontWeight.w600, color: MyColors.darkTextColor, letterSpacing: -0.48),
                                      children: <TextSpan>[
                                        TextSpan(
                                          text: displayTime,
                                          style: const TextStyle(fontSize: 16, fontWeight: FontWeight.w600, color: MyColors.textMixColor, letterSpacing: -0.48),
                                        ),
                                      ],
                                    ),
                                  ),
                          ],
                        );
                      },
                      valueListenable: otpFieldClear,
                    ),
                    18.height,
                    DefaultButton(
                      stopTimer ? LocaleKeys.resend.tr() : LocaleKeys.cancel.tr(),
                      () async {
                        if (stopTimer) {
                          hideSMSBox(context);
                          onResendCode();
                        } else {
                          stopTimer = true;
                          // onFailure();
                          hideSMSBox(context);
                        }
                      },
                      colors: stopTimer
                          ? null
                          : [
                              MyColors.pinkDarkColor,
                              MyColors.pinkDarkColor,
                            ],
                    ),
                  ],
                ),
              );
            }),
          );
        });
  }

  InputDecoration buildInputDecoration(BuildContext context) {
    return InputDecoration(
      counterText: " ",
      enabledBorder: const OutlineInputBorder(
        borderRadius: BorderRadius.all(Radius.circular(10)),
        borderSide: BorderSide(color: Colors.black),
      ),
      focusedBorder: OutlineInputBorder(
        borderRadius: const BorderRadius.all(Radius.circular(10.0)),
        borderSide: BorderSide(color: Theme.of(context).primaryColor),
      ),
      errorBorder: OutlineInputBorder(
        borderRadius: const BorderRadius.all(Radius.circular(10.0)),
        borderSide: BorderSide(color: Colors.red),
      ),
      // focusedErrorBorder: OutlineInputBorder(
      //   borderRadius: const BorderRadius.all(Radius.circular(10.0)),
      //   borderSide: BorderSide(color: Colors.red),
      //   // borderSide: BorderSide(color: Theme.of(context).colorScheme.error),
      // ),
      focusedErrorBorder: OutlineInputBorder(
        borderRadius: const BorderRadius.all(Radius.circular(10.0)),
        borderSide: BorderSide(color: Theme.of(context).colorScheme.error),
      ),
    );
  }

  // String validateCodeDigit(value) {
  //   if (value.isEmpty) {
  //     return ' ';
  //   } else if (value.length == 3) {
  //     print(value);
  //   } else {
  //     return null;
  //   }
  // }

  String getSecondsAsDigitalClock(int inputSeconds) {
    int secNum = int.parse(inputSeconds.toString()); // don't forget the second param
    int hours = (secNum / 3600).floor();
    int minutes = ((secNum - hours * 3600) / 60).floor();
    double seconds = secNum - hours * 3600 - minutes * 60;
    String minutesString = "";
    String secondsString = "";
    minutesString = minutes < 10 ? "0" + minutes.toString() : minutes.toString();
    secondsString = seconds < 10 ? "0" + seconds.toStringAsFixed(0) : seconds.toStringAsFixed(0);
    return minutesString + ":" + secondsString;
  }

  void startTimer(setState) {
    remainingTime--;
    if (stopTimer) return;
    setState(() {
      displayTime = getSecondsAsDigitalClock(remainingTime);
    });

    timer = Future.delayed(const Duration(seconds: 1), () {
      if (remainingTime > 0) {
        startTimer(setState);
      } else {
        setState(() {
          stopTimer = true;
        });
      }
    });
  }

  void hideSMSBox(context) {
    onFailure();
  }

  void _onOtpCallBack(String otpCode, bool? isAutofill) {
    if (otpCode.length == 4) {
      // stopTimer = true;
      otpFieldClear.value = otpCode;
      onSuccess(otpCode, _pinPutController);
    }
  }

// static getSignature() async {
//   // if (Platform.isAndroid) {
//   //   return await SmsRetriever.getAppSignature();
//   // } else {
//   //   return null;
//   // }
// }
}