fcs/lib/pages/profile/change_phone_number.dart

// ignore_for_file: use_build_context_synchronously
import 'package:country_picker/country_picker.dart';
import 'package:fcs/helpers/theme.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';

import 'package:provider/provider.dart';

import '../../domain/entities/auth_result.dart';
import '../../domain/entities/auth_status.dart';
import '../../domain/entities/user.dart';
import '../main/model/main_model.dart';
import '../main/util.dart';
import '../widgets/display_text.dart';
import '../widgets/input_phone.dart';
import '../widgets/local_app_bar.dart';
import '../widgets/progress.dart';
import 'confirm_phone_number.dart';

class ChangePhoneNumber extends StatefulWidget {
  final User user;
  const ChangePhoneNumber({super.key, required this.user});

  @override
  State<ChangePhoneNumber> createState() => _ChangePhoneNumberState();
}

class _ChangePhoneNumberState extends State<ChangePhoneNumber> {
  bool _isLoading = false;
  TextEditingController _newPhoneCtl = TextEditingController();
  late Country _selectedCountry;
  final _formKey = GlobalKey<FormState>();

  @override
  void initState() {
    _selectedCountry = Country(
        name: 'Myanmar',
        countryCode: 'MM',
        displayName: 'Myanmar(MM)',
        displayNameNoCountryCode: 'Myanmar',
        e164Key: '',
        e164Sc: -1,
        example: '',
        geographic: false,
        level: -1,
        phoneCode: '95');
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    final currentPhoneBox = DisplayText(
        text: widget.user.phone,
        labelTextKey: "profile.current_phone",
        iconData: Icons.phone);

    final newPhoneBox = InputPhone(
      autofocus: true,
      lableKey: "profile.new_phone",
      validationLabel: "profile.new_phone_empty",
      phoneCtl: _newPhoneCtl,
      selectedCountry: _selectedCountry,
      onValueChange: (country) {
        setState(() {
          _selectedCountry = country;
        });
      },
    );

    final sendBtn = Padding(
      padding: const EdgeInsets.symmetric(horizontal: 30),
      child: fcsButton(
        context,
        getLocalString(context, 'profile.send_sms'),
        callack: _sendSMS,
      ),
    );

    return Form(
      key: _formKey,
      child: LocalProgress(
        inAsyncCall: _isLoading,
        child: Scaffold(
          appBar: const LocalAppBar(
            labelKey: 'profile.change_phone.title',
            backgroundColor: Colors.white,
            labelColor: primaryColor,
            arrowColor: primaryColor,
          ),
          body: ListView(
            padding: const EdgeInsets.only(left: 15, right: 15, top: 10),
            children: [
              currentPhoneBox,
              const SizedBox(height: 15),
              newPhoneBox,
              const SizedBox(height: 30),
              sendBtn
            ],
          ),
        ),
      ),
    );
  }

  Future<void> _sendSMS() async {
    if (_formKey.currentState != null && !_formKey.currentState!.validate()) {
      return;
    }
    if (_newPhoneCtl.text.length < 5) {
      showMsgDialog(context, "Error", "Invalid phone number");
      return;
    }

    setState(() {
      _isLoading = true;
    });

    try {
      bool isMyanmar = _selectedCountry.phoneCode == "95";
      String dialCode = isMyanmar ? "+959" : "+${_selectedCountry.phoneCode}";
      String phoneNumber = dialCode + _newPhoneCtl.text;

      AuthResult auth = await context.read<MainModel>().sendSms(phoneNumber);
      if (auth.authStatus == AuthStatus.SMS_SENT) {
        bool? updated = await Navigator.of(context, rootNavigator: true).push(
            CupertinoPageRoute(
                builder: (context) => ConfirmPhoneNumber(
                    phoneNumber: phoneNumber,
                    forceResendingToken: auth.forceResendingToken)));
        if (updated ?? false) {
          Navigator.pop(context, true);
        }
      }
    } catch (e) {
      showMsgDialog(context, "Error", e.toString());
    } finally {
      setState(() {
        _isLoading = false;
      });
    }
  }
}