signIn_D_flutter

import 'package:flutter/material.dart';
import 'package:intl_phone_field/intl_phone_field.dart';
import 'package:provider/provider.dart';


class SignIn extends StatefulWidget {
  const SignIn({Key? key}) : super(key: key);

  @override
  _SignInState createState() => _SignInState();
}

class _SignInState extends State<SignIn> {
  final _formKey = GlobalKey<FormState>();
  late bool alert;
  late String email, pwd, phone_num;

  @override
  Widget build(BuildContext context) {
    return Scaffold(

      body: SingleChildScrollView(
        child: Container(
          padding: EdgeInsets.symmetric(horizontal: 40.0),
          height: MediaQuery.of(context).size.height,
          width: double.infinity,
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            mainAxisSize: MainAxisSize.max,
            crossAxisAlignment: CrossAxisAlignment.center,
            children: [
              Row(
                children: [
                  Text(
                    'Sign In',
                    style: TextStyle(fontSize: 22.0),
                  ),
                ],
              ),
              SizedBox(
                height: 5.0,
              ),
              Row(
                children: [
                  Flexible(child: Text("Enter your credentials to login")),
                ],
              ),
              SizedBox(
                height: 25.0,
              ),
              Form(
                key: _formKey,
                child: Column(
                  children: [
                    SizedBox(height: 20),
                    IntlPhoneField(
                      decoration: const InputDecoration(
                        labelText: 'Phone Number',
                        border: OutlineInputBorder(
                          borderSide: BorderSide(),
                        ),
                      ),
                      initialCountryCode: 'CM',
                      onChanged: (phone) {
                        setState(() => phone_num = phone.completeNumber);
                      },
                    ),
                    SizedBox(height: 20),
                    TextFormField(
                        decoration: const InputDecoration(
                          prefixIcon: Icon(Icons.vpn_key, color: Colors.blue),
                          labelText: 'Password',
                          hintText: "",
                          border: OutlineInputBorder(
                              borderRadius: BorderRadius.all(
                                Radius.circular(10.0),
                              ),
                              borderSide: BorderSide(color: Colors.grey)),
                          focusedBorder: OutlineInputBorder(
                              borderRadius: BorderRadius.all(
                                Radius.circular(10.0),
                              ),
                              borderSide: BorderSide(color: Colors.blue)),
                        ),
                        keyboardType: TextInputType.text,
                        obscureText: true,
                        validator: (val) =>
                            val!.isEmpty ? 'password is required' : null,
                        onChanged: (val) {
                          setState(() => pwd = val);
                        }),
                    SizedBox(height: 40),
                    ElevatedButton(
                      child: Text('LOGIN'),
                      onPressed: () async {
                        print('let try');
                        AuthServices().userSignIn(phone_num, pwd, context);
                        var alertDia =
                            Provider.of<UserLoginStatus>(context, listen: false)
                                .isActExist;
                        // alertDia ? '' : showalertDialogue();
                        print(
                            'the alert box is ${alertDia}   !!!!!!!!!!!!!!!!!!');
                        print('phone number: ${phone_num} and paswword ${pwd}');
                      },
                    ),
                  ],
                ),
              ),
              TextButton(
                child: const Text(
                  'Don\'t have an account?',
                  style: TextStyle(color: Colors.blue),
                ),
                onPressed: () async {
                  await Navigator.push(context,
                      MaterialPageRoute(builder: (context) => SignUp()));
                },
              ),
            ],
          ),
        ),
      ),
    );
  }


  Future<void> showalertDialogue() async {

      Widget okButton = FlatButton(
      child: Text("OK"),
      onPressed: () {
        Navigator.pop(context);
      },
    );

    AlertDialog alert = AlertDialog(
      title: Text("LOGIN ERROR"),
      content: Text("Credential Enter are Invalid "),
      actions: [
        okButton,
      ],
    );
    showDialog(
      context: context,
      builder: (BuildContext context) {
        return alert;
      },
    );
  }
}