PRM392/Foodify/app/src/main/java/com/waterbase/foodify/SignIn.java

package com.waterbase.foodify;

import android.app.ProgressDialog;
import android.content.Intent;
import android.graphics.Typeface;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import com.rey.material.widget.CheckBox;
import com.waterbase.foodify.Common.Common;
import com.waterbase.foodify.Model.User;

import io.paperdb.Paper;

public class SignIn extends AppCompatActivity {

    EditText edtPhone, edtPassword;
    Button btnSignIn;
    TextView txtAppName;
    CheckBox ckbRemember;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sign_in);

        edtPassword = (EditText) findViewById(R.id.edtPassword);
        edtPhone = (EditText) findViewById(R.id.edtPhone);
        btnSignIn = (Button) findViewById(R.id.btnSignIn);
        ckbRemember = (CheckBox)findViewById(R.id.ckbRemember);

        //Init Paper
        Paper.init(this);

        txtAppName = (TextView) findViewById(R.id.txtAppName);

        Typeface face = Typeface.createFromAsset(getAssets(), "fonts/NABILA.TTF");
        txtAppName.setTypeface(face);

        //Init Firebase
        FirebaseDatabase database = FirebaseDatabase.getInstance();
        final DatabaseReference table_user = database.getReference("User");

        btnSignIn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                if (Common.isConnectedToInternet(getBaseContext())) {

                    //Save user& password
                    if(ckbRemember.isChecked()) {
                        Paper.book().write(Common.USER_KEY, edtPhone.getText().toString());
                        Paper.book().write(Common.PWD_KEY, edtPassword.getText().toString());
                    }
                    final ProgressDialog mDialog = new ProgressDialog(SignIn.this);
                    mDialog.setMessage("Please waiting...");
                    mDialog.show();

                    table_user.addListenerForSingleValueEvent(new ValueEventListener() {


                        @Override
                        public void onDataChange(DataSnapshot dataSnapshot) {
                            //Check phone and password is null or not
                            if (!edtPhone.getText().toString().isEmpty() && !edtPassword.getText().toString().isEmpty()) {
                                //Check if user not in database
                                if (dataSnapshot.child(edtPhone.getText().toString()).exists()) {
                                    //Get User information
                                    mDialog.dismiss();
                                    User user = dataSnapshot.child(edtPhone.getText().toString()).getValue(User.class);
                                    user.setPhone(edtPhone.getText().toString());
                                    if (user.getPassword().equals(edtPassword.getText().toString())) {
                                        Intent homeIntent = new Intent(SignIn.this, Home.class);
                                        Common.currentUser = user;
                                        startActivity(homeIntent);
                                        finish();
                                    } else {
                                        Toast.makeText(SignIn.this, "Số điện thoại hoặc mật khẩu không đúng. Xin vui lòng thử lại!", Toast.LENGTH_SHORT).show();
                                    }
                                } else {
                                    mDialog.dismiss();
                                    Toast.makeText(SignIn.this, "Số điện thoại chưa được đăng ký. Vui lòng đăng ký để sử dụng!", Toast.LENGTH_SHORT).show();
                                }
                            } else {
                                mDialog.dismiss();
                                Toast.makeText(SignIn.this, "Số điện thoại và mật khẩu không được để trống. Vui lòng thử lại!", Toast.LENGTH_SHORT).show();
                            }
                        }

                        @Override
                        public void onCancelled(DatabaseError databaseError) {

                        }
                    });
                } else {
                    Toast.makeText(SignIn.this, "Vui lòng kiểm tra kết nối mạng!", Toast.LENGTH_SHORT).show();
                    return;
                }
            }
        });
    }

    public void register(View view) {
        startActivity(new Intent(SignIn.this, com.waterbase.foodify.SignUp.class));
    }
}