FaucetHub/lib/login.dart

import 'package:faucethub/Backend/DebugHelper.dart';
import 'package:faucethub/Backend/Dialogs.dart';
import 'package:faucethub/Backend/login_mgr.dart';

import 'package:faucethub/Backend/googleSignIn.dart';
import 'package:flutter/material.dart';
import 'package:google_sign_in/google_sign_in.dart';
import 'package:provider/provider.dart';

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

  @override
  State<LoginPage> createState() => _LoginPageState();
}


class _LoginPageState extends State<LoginPage> {
  TextEditingController usernameTxtController = TextEditingController();
  TextEditingController passwordTxtController = TextEditingController();

  bool isLogin = true;

  @override
  Widget build(BuildContext context) => ChangeNotifierProvider(
  create:(context)=>GoogleSignInProvider(),
  builder: (context, snapshot) {
    return Scaffold(
      body: Container(
        alignment: Alignment.center,
        child: Card(
            child: (isLogin) ? LoginCard() : RegisterCard(),
        ),
      ),
    );
  }
  );


  Widget LoginCard(){
    return Container(
        padding: EdgeInsets.symmetric(vertical: 20, horizontal: 50),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Text("Welcome!",style: TextStyle(fontSize: 25),),            SizedBox(height: 10,),

            Text("Login to continue"),
            Row(
              mainAxisSize: MainAxisSize.max,
              children: [
                Container(child: Icon(Icons.person)),
                Expanded(child: TextField(controller: usernameTxtController,decoration: const InputDecoration(
                  labelText: 'Username',
                ))),
              ],
            ),
            SizedBox(height: 10,),
            Row(
              mainAxisSize: MainAxisSize.max,
              children: [
                Container(child: Icon(Icons.key)),
                Expanded(child: TextField(controller: passwordTxtController,obscureText: true,
                  decoration: const InputDecoration(
                    labelText: 'Password',
                  ),)),
              ],
            ),
            MaterialButton(onPressed: (){
              if(usernameTxtController.value.text.length < 3){
                Dialogs.showAlertDialog(context, "Invalid", "Username entered is invalid, It must be longer than 3 letters");
                return;
              }
              if(passwordTxtController.value.text.length < 5){
                Dialogs.showAlertDialog(context, "Invalid", "Password entered is invalid, It must be longer than 5 letters");
                return;
              }
              Login();
              setState(() {

              });
            },child: Text("Login"),
              color: Colors.green,
            ),
            MaterialButton(onPressed: (){
              isLogin=false;
              setState(() {

              });
            },child: Text("Don't have an account? Register"),
              color: Colors.grey,
            ),
            SizedBox(height: 50,),

            MaterialButton(onPressed: (){
              SignWithGoogle();
              setState(() {

              });
            },child: Text("Continue with Google"),
              color: Colors.blueAccent,
            )
          ],
        )
    );
  }
  Widget RegisterCard(){
    return Container(
        padding: EdgeInsets.symmetric(vertical: 20, horizontal: 50),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Text("Welcome!",style: TextStyle(fontSize: 25),),            SizedBox(height: 10,),
            Text("Create a new Account"),
            Row(
              mainAxisAlignment: MainAxisAlignment.start,
              mainAxisSize: MainAxisSize.max,
              children: [
                Container(child: Icon(Icons.person)),
                Expanded(child: TextField(controller: usernameTxtController,decoration: const InputDecoration(
                  labelText: 'Username',
                ))),
              ],
            ),
            SizedBox(height: 10,),
            Row(
              mainAxisSize: MainAxisSize.max,
              children: [
                Container(child: Icon(Icons.key)),
                Expanded(child: TextField(controller: passwordTxtController,obscureText: true,
                  decoration: const InputDecoration(
                    labelText: 'Password',
                  ),)),
              ],
            ),
            MaterialButton(onPressed: (){
              if(usernameTxtController.value.text.length < 3){
                Dialogs.showAlertDialog(context, "Invalid", "Username entered is invalid, It must be longer than 3 letters");
                return;
              }
              if(passwordTxtController.value.text.length < 5){
                Dialogs.showAlertDialog(context, "Invalid", "Password entered is invalid, It must be longer than 5 letters");
                return;
              }
              Register();

              setState(() {

              });
            },child: Text("Register"),
              color: Colors.green,
            ),
            MaterialButton(onPressed: (){
              isLogin=true;
              setState(() {

              });
            },child: Text("Has an account? Login Here"),
              color: Colors.grey,
            ),
            SizedBox(height: 50,),

            MaterialButton(onPressed: (){
              SignWithGoogle();
              setState(() {

              });
            },child: Text("Continue with Google"),
              color: Colors.blueAccent,
            )
          ],
        )
    );
  }
  Future<void> SignWithGoogle() async {
    final provider = Provider.of<GoogleSignInProvider>(context, listen:false);
    provider.googleLogin().then((v){
      if(provider.user.id.length > 2){
        if(provider.googleAuth!=null){
          //login(username: provider.user.email,password: provider.user.id);
        }
      }
    });
  }

  void Register() async{

    Debug.Log("Register clicked");
    Dialogs.waiting();

    int registerResult = await LoginManager.Register(usernameTxtController.value.text, passwordTxtController.value.text);
    Dialogs.hide();

    if(registerResult == 0){
      // Dialogs.showAlertDialog(context, "Success", "Registration done, congrats!");
      Login();
    }else if(registerResult == 1){
      Dialogs.showAlertDialog(context, "Failed", "Servers are unreachable. Please check internet connection and try again.");
    }else if(registerResult == 5){
      Dialogs.showAlertDialog(context, "Failed", "Username already exists.");
    }

  }

  void Login() async{

    Debug.Log("Login clicked");
    Dialogs.waiting();

    int registerResult = await LoginManager.Login(usernameTxtController.value.text, passwordTxtController.value.text);
    Dialogs.hide();

    if(registerResult == 0){
      // Dialogs.showAlertDialog(context, "Success", "Login done, congrats!");
      Navigator.of(context).pushReplacementNamed('/home');
    }else if(registerResult == 1){
      Dialogs.showAlertDialog(context, "Failed", "Servers are unreachable. Please check internet connection and try again.");
    }else if(registerResult == 5){
      Dialogs.showAlertDialog(context, "Failed", "Username or password is incorrect.");
    }

  }
}