manager-app/lib/Screens/login_screen.dart

import 'package:flutter/material.dart';
import 'package:manager_app/Components/loading.dart';
import 'package:manager_app/Components/message_notification.dart';
import 'package:manager_app/Components/rounded_button.dart';
import 'package:manager_app/Components/rounded_input_field.dart';
import 'package:manager_app/Components/rounded_password_field.dart';
import 'package:manager_app/Helpers/FileHelper.dart';
import 'package:manager_app/Models/managerContext.dart';
import 'package:manager_app/Models/session.dart';
import 'package:manager_app/Screens/Main/main_screen.dart';
import 'package:manager_app/app_context.dart';
import 'package:manager_app/client.dart';
import 'package:manager_app/constants.dart';
import 'package:managerapi/api.dart';
import 'package:provider/provider.dart';

class LoginScreen extends StatefulWidget {
  final Session session;
  LoginScreen({Key key, this.session}) : super(key: key);

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

class _LoginScreenState extends State<LoginScreen> {
  String email; // DEV "test@email.be"
  String password ; // DEV = "kljqsdkljqsd"
  String host ; // DEV = "http://192.168.31.96"
  Client clientAPI;
  bool isLoading = false;
  bool isRememberMe = false;

  void authenticateTRY(dynamic appContext) async {
    print("try auth.. ");

    this.host = "http://localhost:5000";
    this.email = "fs";
    this.password = "fs";

    clientAPI = Client(this.host);

    if (this.email != null && this.password != null && this.host != null) {

      // if () {} // Add if token exist and not null + not expired
      try {
        setState(() {
          isLoading = true;
        });
        print(email);
        print(password);

        LoginDTO loginDTO = new LoginDTO(email: email, password: password);
        TokenDTO token = await clientAPI.authenticationApi.authenticationAuthenticateWithJson(loginDTO);
        print("Token ??");
        print(token);
        print(token.accessToken);
        setAccessToken(token.accessToken);

        if (isRememberMe) {
          Session updatedSession = new Session(rememberMe: isRememberMe, host: host, email: email, password: password);
          // update JSON FILE
          FileHelper().writeSession(updatedSession);
        }

        showNotification(Colors.lightGreen, kWhite, 'Connexion réussie', context, null);

        ManagerAppContext managerAppContext = appContext.getContext();
        // Set the appContext
        if (managerAppContext == null) {
          managerAppContext = new ManagerAppContext();
        }

        // store user info locally
        managerAppContext.email = email;
        managerAppContext.token = token;
        managerAppContext.clientAPI = clientAPI;
        print(managerAppContext);

        appContext.setContext(managerAppContext);

        setState(() {
          isLoading = false;
        });

        Navigator.pushAndRemoveUntil(
            context,
            MaterialPageRoute(
              builder: (context) {
                return MainScreen();
              },
            ),
                (Route<dynamic> route) => false // For pushAndRemoveUntil
        );
      }
      catch (e) {
        print("error auth");
        print(e);
        showNotification(Colors.orange, kWhite, 'Un problème est survenu lors de la connexion', context, null);

        setState(() {
          isLoading = false;
        });
      }
    }
  }

  void setAccessToken(String accessToken) {
    clientAPI.apiApi.authentications.forEach((key, auth) {
      if (auth is OAuth) {
        auth.accessToken = accessToken;
      }
    });
  }

  @override
  void initState() {
    this.isRememberMe = widget.session.rememberMe;
    this.host = widget.session.host;
    this.email = widget.session.email;
    this.password = widget.session.password;
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    final appContext = Provider.of<AppContext>(context);
    Size size = MediaQuery.of(context).size;

    return Scaffold(
      body: Center(
        child: SingleChildScrollView(
          child: Container(
            height: size.height *0.65,
            width: size.width *0.5,
            decoration: BoxDecoration(
              color: kWhite,
              borderRadius: BorderRadius.circular(8.0),
              boxShadow: [
                BoxShadow(
                  color: kWhite.withOpacity(0.3),
                  spreadRadius: 0.5,
                  blurRadius: 0.5,
                  offset: Offset(0, 1.5), // changes position of shadow
                ),
              ],
            ),
            child: Padding(
              padding: const EdgeInsets.only(left: 60.0, right: 60.0),
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: <Widget>[
                  RoundedInputField(
                      hintText: "Host",
                      onChanged: (value) {
                        host = value;
                      },
                      initialValue: host,
                      icon: Icons.home
                  ),
                  RoundedInputField(
                      hintText: "Email",
                      onChanged: (value) {
                        email = value;
                      },
                      icon: Icons.person,
                      initialValue: email,
                      isEmail: true,
                  ),
                  RoundedPasswordField(
                    initialValue: password,
                    onChanged: (value) {
                      password = value;
                    },
                  ),
                  Padding(
                    padding: const EdgeInsets.all(8.0),
                    child: Row(
                      crossAxisAlignment: CrossAxisAlignment.center,
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: [
                        Checkbox(
                          checkColor: kTextLightColor,
                          activeColor: kPrimaryColor,
                          value: this.isRememberMe,
                          onChanged: (bool value) {
                            setState(() {
                              this.isRememberMe = value;
                            });
                          },
                        ),
                        Text("Se souvenir de moi", style: TextStyle(fontSize: 15, fontWeight: FontWeight.w500),),
                      ],
                    ),
                  ),
                  SizedBox(height: size.height * 0.05),
                  !isLoading ? RoundedButton(
                    text: "LOGIN",
                    fontSize: 25,
                    press: () {
                      authenticateTRY(appContext);
                    },
                  ): Container(
                      height: size.height * 0.1,
                      child: Loading()
                  ),
                ],
              ),
            ),
          ),
        ),
      )
    );
  }
}