fcs/lib/pages/customer/invitation_create.dart

import 'package:country_picker/country_picker.dart';
import 'package:fcs/helpers/theme.dart';
import 'package:fcs/pages/customer/model/customer_model.dart';
import 'package:fcs/pages/main/util.dart';
import 'package:fcs/pages/widgets/input_text.dart';
import 'package:fcs/pages/widgets/local_app_bar.dart';
import 'package:fcs/pages/widgets/progress.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';

import '../widgets/input_phone.dart';

class InvitationCreate extends StatefulWidget {
  @override
  _InvitationCreateState createState() => _InvitationCreateState();
}

class _InvitationCreateState extends State<InvitationCreate> {
  TextEditingController _nameController = new TextEditingController();
  TextEditingController _phoneController = new TextEditingController();

  bool _isLoading = false;
  final _inviteFormKey = GlobalKey<FormState>();
  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
  void dispose() {
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    final nameBox = InputText(
      labelTextKey: 'customer.name',
      iconData: Icons.person,
      controller: _nameController,
      autovalidateMode: AutovalidateMode.onUserInteraction,
      validator: (value) {
        if (value == null || value.isEmpty) {
          return "Please insert name";
        }
        return null;
      },
    );

    final phoneBox = InputPhone(
      lableKey: "customer.phone",
      validationLabel: "customer.phone_empty",
      phoneCtl: _phoneController,
      selectedCountry: _selectedCountry,
      onValueChange: (country) {
        setState(() {
          _selectedCountry = country;
        });
      },
    );

    return LocalProgress(
      inAsyncCall: _isLoading,
      child: Scaffold(
        appBar: LocalAppBar(
          labelKey: "invitation.form.title",
          backgroundColor: Colors.white,
          labelColor: primaryColor,
          arrowColor: primaryColor,
          onBack: () {
            if (isDataChanged()) {
              showConfirmDialog(context, "back.button_confirm", () {
                Navigator.of(context).pop();
              });
            } else {
              Navigator.of(context).pop();
            }
          },
        ),
        body: Form(
          key: _inviteFormKey,
          child: Container(
            padding: EdgeInsets.all(18),
            child: ListView(
              children: <Widget>[
                nameBox,
                SizedBox(height: 10),
                phoneBox,
                SizedBox(height: 30),
                fcsButton(context, getLocalString(context, "invite.btn"),
                    callack: _invite),
              ],
            ),
          ),
        ),
      ),
    );
  }

  _invite() async {
    if (!_inviteFormKey.currentState!.validate()) {
      return null;
    }

    setState(() {
      _isLoading = true;
    });
    try {
      String userName = _nameController.text;

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

      CustomerModel customerModel =
          Provider.of<CustomerModel>(context, listen: false);
      await customerModel.inviteUser(userName, phoneNumber);
      Navigator.pop(context);
    } catch (e) {
      showMsgDialog(context, "Error", e.toString());
    } finally {
      setState(() {
        _isLoading = false;
      });
    }
  }

  isDataChanged() {
    String userName = _nameController.text;
    String phoneNumber = _phoneController.text;
    return userName != "" || phoneNumber != "";
  }
}