BookForm.Java(No attach Images )

package com.example.gypsy;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.app.DatePickerDialog;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.NumberPicker;
import android.widget.Spinner;
import android.widget.Toast;

import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
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 java.util.ArrayList;
import java.util.Calendar;
import java.util.List;

public class BookForm extends AppCompatActivity {
    private Spinner roomPreferenceSpinner;
    private List<String> roomTypeList = new ArrayList<>();
    private EditText fullNameET;
    private EditText contactNumberET;
    private EditText emailET;
    private EditText checkInDateET;
    private EditText checkOutDateET;
    private NumberPicker adultsNumberPicker;
    private NumberPicker childrenNumberPicker;
    private EditText yourGcashNameET;
    private EditText yourGcashNumberET;
    private EditText referenceNumberET;
    private Button submitButton;

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

        Intent intent = getIntent(); // kunin yung hotelId sa DynamicHotel para sa
        String hotelId = intent.getStringExtra("hotelKey"); // personalized fields nila
        Log.d("BookFormActivity", "hotelId: " + hotelId);  // sa book info like roomtypes etc

        DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReference();
        DatabaseReference roomPreferencesRef = databaseReference.child("hotels").child(hotelId).child("roomTypes");

        fullNameET = findViewById(R.id.fullNameET);
        contactNumberET = findViewById(R.id.contactNumberET);
        emailET = findViewById(R.id.emailET);
        submitButton = findViewById(R.id.submitButton);
        roomPreferenceSpinner = findViewById(R.id.roomPreferenceSpinner);
        checkInDateET = findViewById(R.id.checkInDateET);
        checkOutDateET = findViewById(R.id.checkOutDateET);
        yourGcashNameET = findViewById(R.id.yourGcashNameET);
        yourGcashNumberET = findViewById(R.id.yourGcashNumberET);
        referenceNumberET = findViewById(R.id.referenceNumberET);

        ArrayAdapter<String> roomTypeAdapter = new ArrayAdapter<>(this, android.R.layout.simple_spinner_item, roomTypeList);
        roomTypeAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        roomPreferenceSpinner.setAdapter(roomTypeAdapter);

        adultsNumberPicker = findViewById(R.id.adultsNumberPicker);
        childrenNumberPicker = findViewById(R.id.childrenNumberPicker);
        adultsNumberPicker.setMinValue(0);
        adultsNumberPicker.setMaxValue(10);
        childrenNumberPicker.setMinValue(0);
        childrenNumberPicker.setMaxValue(10);

        checkInDateET.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showDatePickerDialog(checkInDateET);
            }
        });
        checkOutDateET.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showDatePickerDialog(checkOutDateET);
            }
        });
        roomPreferencesRef.addListenerForSingleValueEvent(new ValueEventListener() {
            @Override
            public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                if (dataSnapshot.exists()) { // then loop para mag iterate sa children ng DataSnapshot
                    for (DataSnapshot preferenceSnapshot : dataSnapshot.getChildren()) {
                        String roomPreference = preferenceSnapshot.getValue(String.class);
                        roomTypeList.add(roomPreference);
                    }
                    roomTypeAdapter.notifyDataSetChanged();
                }
            }

            @Override
            public void onCancelled(@NonNull DatabaseError databaseError) {
                Log.e("BookForm", "error" + databaseError.getMessage());
            }
        });

        submitButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (allFields()) {
                    FirebaseUser currentUser = FirebaseAuth.getInstance().getCurrentUser();

                    if (currentUser != null) {
                        String userId = currentUser.getUid();
                        String fullName = fullNameET.getText().toString();
                        String checkInDate = checkInDateET.getText().toString();
                        String checkOutDate = checkOutDateET.getText().toString();
                        int adults = adultsNumberPicker.getValue();
                        int children = childrenNumberPicker.getValue();
                        String contactNumber = contactNumberET.getText().toString();
                        String email = emailET.getText().toString();
                        String roomPreference = roomPreferenceSpinner.getSelectedItem().toString();
                        String yourGcashName = yourGcashNameET.getText().toString();
                        String yourGcashNumber = yourGcashNumberET.getText().toString();
                        String referenceNumber = referenceNumberET.getText().toString();

                        save(userId, hotelId, fullName, checkInDate, checkOutDate,
                                adults, children, contactNumber, email, roomPreference,
                                yourGcashName, yourGcashNumber, referenceNumber);

                        Toast.makeText(BookForm.this, "Booking submitted.", Toast.LENGTH_SHORT).show();
                    } else {
                        Log.e("BookForm", "User is not authenticated");
                    }
                } else {
                    Toast.makeText(BookForm.this, "Please fill in all required fields.", Toast.LENGTH_SHORT).show();
                }
            }
        });
    }

    private void save(String userId, String hotelId, String fullName, String checkInDate, String checkOutDate,
                      int adults, int children, String contactNumber, String email, String roomPreference,
                      String yourGcashName, String yourGcashNumber, String referenceNumber) {
        FirebaseUser currentUser = FirebaseAuth.getInstance().getCurrentUser();

        if (currentUser != null) {
            String userType = "Tourist";  // select yung user type which is tourist
            //  kukunin yung name for Tourist user type
            String userPath = "users/" + userType + "/" + currentUser.getUid() + "/name";

            DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReference();
            DatabaseReference userRef = databaseReference.child(userPath);
            userRef.addListenerForSingleValueEvent(new ValueEventListener() {
                @Override
                public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                    if (dataSnapshot.exists()) {
                        String userName = dataSnapshot.getValue(String.class);

                        DatabaseReference hotelRef = databaseReference.child("hotels").child(hotelId).child("user_id");
                        hotelRef.addListenerForSingleValueEvent(new ValueEventListener() {
                            @Override
                            public void onDataChange(@NonNull DataSnapshot hotelDataSnapshot) {
                                if (hotelDataSnapshot.exists()) {
                                    String hotelUserId = hotelDataSnapshot.getValue(String.class);

                                    // store na under booking_info and generate ng unique id
                                    DatabaseReference bookingsRef = databaseReference.child("booking_info").push();
                                    String bookingId = bookingsRef.getKey();

                                    bookingsRef.child("userId").setValue(userId);
                                    bookingsRef.child("fullName").setValue(fullName);
                                    bookingsRef.child("checkInDate").setValue(checkInDate);
                                    bookingsRef.child("checkOutDate").setValue(checkOutDate);
                                    bookingsRef.child("adults").setValue(adults);
                                    bookingsRef.child("children").setValue(children);
                                    bookingsRef.child("contactNumber").setValue(contactNumber);
                                    bookingsRef.child("email").setValue(email);
                                    bookingsRef.child("roomPreference").setValue(roomPreference);
                                    bookingsRef.child("yourGcashName").setValue(yourGcashName);
                                    bookingsRef.child("yourGcashNumber").setValue(yourGcashNumber);
                                    bookingsRef.child("referenceNumber").setValue(referenceNumber);
                                    bookingsRef.child("userName").setValue(userName);
                                    bookingsRef.child("hotelUserId").setValue(hotelUserId);

                                    Log.d("BookForm", "Booking data saved");
                                }
                            }

                            @Override
                            public void onCancelled(@NonNull DatabaseError hotelDatabaseError) {
                                Log.e("BookForm", "Hotel database error: " + hotelDatabaseError.getMessage());
                            }
                        });
                    } else {
                        Log.e("BookForm", "User data does not exist in the database");
                    }
                }

                @Override
                public void onCancelled(@NonNull DatabaseError databaseError) {
                    Log.e("BookForm", "Database error: " + databaseError.getMessage());
                }
            });
        } else {
            Log.e("BookForm", "User is not authenticated");
        }
    }

    private void showDatePickerDialog(final EditText editText) {
        final Calendar calendar = Calendar.getInstance();
        int year = calendar.get(Calendar.YEAR);
        int month = calendar.get(Calendar.MONTH);
        int dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH);

        DatePickerDialog datePickerDialog = new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener() {
            @Override
            public void onDateSet(android.widget.DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                // Adjust month index and set the selected date in the EditText
                String selectedDate = (monthOfYear + 1) + "/" + dayOfMonth + "/" + year;
                editText.setText(selectedDate);
            }
        }, year, month, dayOfMonth);

        datePickerDialog.show();
    }

    private boolean allFields() {
        return !fullNameET.getText().toString().isEmpty() &&
                !contactNumberET.getText().toString().isEmpty() &&
                !emailET.getText().toString().isEmpty() &&
                !checkInDateET.getText().toString().isEmpty() &&
                !checkOutDateET.getText().toString().isEmpty() &&
                !roomPreferenceSpinner.getSelectedItem().toString().isEmpty() &&
                !yourGcashNameET.getText().toString().isEmpty() &&
                !yourGcashNumberET.getText().toString().isEmpty() &&
                !referenceNumberET.getText().toString().isEmpty();
    }
}