workouttest_app/lib/view/registration.dart

import 'package:aitrainer_app/bloc/account/account_bloc.dart';
import 'package:aitrainer_app/bloc/registration_form_bloc.dart';
import 'package:aitrainer_app/localization/app_localization.dart';
import 'package:aitrainer_app/util/common.dart';
import 'package:aitrainer_app/repository/customer_repository.dart';
import 'package:aitrainer_app/repository/user_repository.dart';
import 'package:aitrainer_app/widgets/splash.dart';
import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter_facebook_login/flutter_facebook_login.dart';
import 'package:flutter_form_bloc/flutter_form_bloc.dart';

import '../library_keys.dart';

class RegistrationPage extends StatelessWidget {
  final UserRepository userRepository = UserRepository();
  final CustomerRepository customerRepository = CustomerRepository();

  @override
  Widget build(BuildContext context) {
    return RegistrationWidget(
        userRepository: userRepository, customerRepository: customerRepository);
  }
}

class RegistrationWidget extends StatefulWidget {
  final UserRepository userRepository;
  final CustomerRepository customerRepository;

  RegistrationWidget({this.userRepository, this.customerRepository});

  @override
  State<StatefulWidget> createState() => _RegistrationWidget();
}

class _RegistrationWidget extends State<RegistrationWidget> {
  final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
  final _formKey = GlobalKey<FormState>();

  @override
  Widget build(BuildContext context) {
    final cWidth = Common.mediaSizeWidth(context);
    // ignore: close_sinks
    final accountBloc = BlocProvider.of<AccountBloc>(context);
    return BlocProvider(
        create: (context) => RegistrationFormBloc(
          userRepository: UserRepository(),
          accountBloc: accountBloc),
        child: Builder(builder: (context) {
          // ignore: close_sinks
          final registrationBloc = BlocProvider.of<RegistrationFormBloc>(context);

          return Scaffold(
            key: _scaffoldKey,
            body: FormBlocListener<RegistrationFormBloc, String, String>(
              onSubmitting: (context, state) {
                LoadingDialog.show(context);
              },
              onSuccess: (context, state) {
                LoadingDialog.hide(context);
                Navigator.of(context).pushNamed('customerModifyPage');
              },
              onFailure: (context, state) {
                LoadingDialog.hide(context);
                showInSnackBar(state.failureResponse);
              },
              child: Container(
                decoration: BoxDecoration(
                  image: DecorationImage(
                    image: AssetImage('asset/image/WT_login.png'),
                    fit: BoxFit.cover,
                    //height: double.infinity,
                    //width: double.infinity,
                    alignment: Alignment.center,
                  ),
                ),
                child: Form(
                  key: _formKey,
                  child: Container(
                      padding: const EdgeInsets.only(left: 25, right: 100),
                      child: ListView(
                          shrinkWrap: false,
                          padding: EdgeInsets.only(top: 120.0),
                          //mainAxisAlignment: MainAxisAlignment.spaceAround,
                          children: <Widget>[
                            //Spacer(flex:4),

                            FlatButton(
                              child: new Image.asset(
                                'asset/image/login_fb.png',
                                width: cWidth * .85,
                              ),
                              onPressed: () => {
                                _fbLogin(),
                                print("Login with FB"),
                              },
                            ),
                            Text(AppLocalizations.of(context).translate("OR")),
                            Divider(),
                            Row(
                              mainAxisAlignment: MainAxisAlignment.start,
                              children: [
                                new InkWell(
                                  child: new Text(
                                      AppLocalizations.of(context)
                                          .translate('SignUp'),
                                      style: TextStyle(
                                          fontWeight: FontWeight.bold,
                                          fontSize: 24)),
                                ),
                              ],
                            ),
                            Divider(),
                            TextFieldBlocBuilder(
                              key: LibraryKeys.loginEmailField,
                              textFieldBloc: registrationBloc.emailField,
                              decoration: InputDecoration(
                                fillColor: Colors.white,
                                filled: true,
                                labelText: 'Email',
                              ),
                            ),
                            Divider(
                              color: Colors.transparent,
                            ),
                            TextFieldBlocBuilder(
                              key: LibraryKeys.loginPasswordField,
                              textFieldBloc: registrationBloc.passwordField,
                              decoration: InputDecoration(
                                fillColor: Colors.white,
                                filled: true,
                                labelText: 'Password',
                              ),
                              suffixButton: SuffixButton.obscureText,
                            ),
                            Divider(
                              color: Colors.transparent,
                            ),
                            Row(
                                mainAxisAlignment: MainAxisAlignment.end,
                                children: <Widget>[
                                  new FlatButton(
                                      child: Image.asset(
                                          'asset/image/WT_OK.png',
                                          width: 100,
                                          height: 100),
                                      onPressed: () => {
                                        registrationBloc.add(SubmitFormBloc())
                                      }),
                                ]),
                            Row(
                                mainAxisAlignment:
                                    MainAxisAlignment.spaceAround,
                                children: <Widget>[
                                  new InkWell(
                                    child: new Text(AppLocalizations.of(context)
                                        .translate('Login')),
                                    onTap: () => Navigator.of(context)
                                        .pushNamed('login'),
                                  ),
                                  Spacer(flex: 1),
                                  new InkWell(
                                    child: new Text(AppLocalizations.of(context)
                                        .translate('Privacy')),
                                    onTap: () =>
                                        Navigator.of(context).pushNamed('gdpr'),
                                  ),
                                  Spacer(flex: 2),
                                ]),
                            //Spacer(flex:2),
                          ])),
                ),
              ),
            ),
          );
        }));
  }

  void showInSnackBar(String error) {
    _scaffoldKey.currentState.showSnackBar(SnackBar(
        backgroundColor: Colors.orange,
        content: Text(
            AppLocalizations.of(context)
                    .translate("There is an error: during registration:") +
                " " +
                error,
            style: TextStyle(color: Colors.white))));
  }

  Future<Null> _fbLogin() async {
    final FacebookLogin facebookSignIn = new FacebookLogin();
    final FacebookLoginResult result = await facebookSignIn.logIn(['email']);

    switch (result.status) {
      case FacebookLoginStatus.loggedIn:
        final FacebookAccessToken accessToken = result.accessToken;
        showInSnackBar('''
         Logged in!         
         Token: ${accessToken.token}
         User id: ${accessToken.userId}
         Expires: ${accessToken.expires}
         Permissions: ${accessToken.permissions}
         Declined permissions: ${accessToken.declinedPermissions}
         ''');
        break;
      case FacebookLoginStatus.cancelledByUser:
        showInSnackBar('Login cancelled by the user.');
        break;
      case FacebookLoginStatus.error:
        showInSnackBar('Something went wrong with the login process.\n'
            'Here\'s the error Facebook gave us: ${result.errorMessage}');
        break;
    }
  }
}