fcs/lib/pages/signin/signin_page.dart

import 'package:country_picker/country_picker.dart';
import 'package:fcs/domain/entities/auth_result.dart';
import 'package:fcs/domain/entities/auth_status.dart';
import 'package:fcs/pages/main/model/main_model.dart';
import 'package:fcs/pages/signin/signin_logic.dart';
import 'package:fcs/pages/widgets/local_app_bar.dart';
import 'package:fcs/pages/widgets/local_text.dart';
import 'package:fcs/pages/widgets/progress.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart';
import 'package:provider/provider.dart';

import '../../helpers/theme.dart';
import '../main/util.dart';
import '../widgets/input_phone.dart';
import 'sms_code_page.dart';

class SigninPage extends StatefulWidget {
  @override
  _SigninPageState createState() => _SigninPageState();
}

class _SigninPageState extends State<SigninPage> {
  bool _isLoading = false;
  late String dialCode;

  TextEditingController phonenumberCtl = new TextEditingController();
  late Country _selectedCountry;

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

  @override
  Widget build(BuildContext context) {
    return LocalProgress(
      inAsyncCall: _isLoading,
      child: new Scaffold(appBar: LocalAppBar(), body: _buildLogin(context)),
    );
  }

  Widget _buildLogin(BuildContext context) {
    return ListView(
      padding: EdgeInsets.only(top: 5, left: 15, right: 15),
      children: <Widget>[
        Container(
          padding: EdgeInsets.only(top: 40),
          child: LocalText(
            context,
            'login.title',
            fontSize: 21,
            color: primaryColor,
            fontWeight: FontWeight.bold,
          ),
        ),
        Container(
          padding: EdgeInsets.only(top: 25),
          child: LocalText(
            context,
            'login.phone',
            color: labelColor,
            fontSize: 16,
          ),
        ),
        InputPhone(
          autofocus: true,
          validationLabel: "login.phone_empty",
          phoneCtl: phonenumberCtl,
          selectedCountry: _selectedCountry,
          onValueChange: (country) {
            setState(() {
              _selectedCountry = country;
            });
          },
        ),
        SizedBox(
          height: 20,
        ),
        Container(
          child: Row(
            mainAxisAlignment: MainAxisAlignment.end,
            children: <Widget>[
              InkWell(
                onTap: () => _next(),
                child: CircleAvatar(
                  minRadius: 25,
                  backgroundColor: primaryColor,
                  child: Icon(
                    FontAwesomeIcons.arrowRight,
                    color: Colors.white,
                  ),
                ),
              )
            ],
          ),
        ),
      ],
    );
  }

  _next() async {
    if (phonenumberCtl.text.length < 5) {
      showMsgDialog(context, "Error", "Invalid phone number");
      return;
    }

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

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

    try {
      String phoneNumber = dialCode + phonenumberCtl.text;
      AuthResult auth = await context.read<MainModel>().sendSms(phoneNumber);
      if (auth.authStatus == AuthStatus.SMS_SENT) {
        await Navigator.of(context).push(CupertinoPageRoute(
            builder: (context) => SmsCodePage(
                phoneNumber: phoneNumber,
                forceResendingToken: auth.forceResendingToken)));
        Navigator.pop(context);
      } else if (auth.authStatus == AuthStatus.AUTH_VERIFIED) {
        await navigateAfterAuthVerified(context);
      }
      if (auth.authStatus == AuthStatus.ERROR) {
        showMsgDialog(context, "Error", auth.authErrorMsg ?? "");
      }
    } catch (e) {
      showMsgDialog(context, "Error", e.toString());
    }
    setState(() {
      _isLoading = false;
    });
  }
}