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

package com.waterbase.foodify;

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

import android.os.Bundle;
import android.view.MenuItem;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.cepheuen.elegantnumberbutton.view.ElegantNumberButton;
import com.google.android.material.appbar.CollapsingToolbarLayout;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
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.squareup.picasso.Picasso;
import com.waterbase.foodify.Database.Database;
import com.waterbase.foodify.Model.Food;
import com.waterbase.foodify.Model.Order;

public class FoodDetail extends AppCompatActivity {


    TextView food_name, food_price, food_description;
    ImageView food_image;
    CollapsingToolbarLayout collapsingToolbarLayout;
    FloatingActionButton btnCart;
    ElegantNumberButton numberButton;

    String foodId = "";

    FirebaseDatabase database;
    DatabaseReference foods;

    Food currentFood;

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

        //Firebase
        database = FirebaseDatabase.getInstance();
        foods = database.getReference("Foods");

        //Init view
        numberButton = (ElegantNumberButton) findViewById(R.id.number_button);
        btnCart = (FloatingActionButton) findViewById(R.id.btnCart);

        btnCart.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                new Database(getBaseContext()).addToCart(new Order(
                        foodId,
                        currentFood.getName(),
                        numberButton.getNumber(),
                        currentFood.getPrice(),
                        currentFood.getDiscount()
                ));

                Toast.makeText(FoodDetail.this, "Added to Cart", Toast.LENGTH_SHORT).show();
            }
        });

        food_description = (TextView) findViewById(R.id.food_description);
        food_name = (TextView) findViewById(R.id.food_name);
        food_price = (TextView) findViewById(R.id.food_price);
        food_image = (ImageView) findViewById(R.id.img_food);

        collapsingToolbarLayout = (CollapsingToolbarLayout) findViewById(R.id.collapsing);
        collapsingToolbarLayout.setExpandedTitleTextAppearance(R.style.ExpandedAppbar);
        collapsingToolbarLayout.setCollapsedTitleTextAppearance(R.style.CollapsedAppbar);

        //Get Food Id from Intent
        if(getIntent() != null)
            foodId = getIntent().getStringExtra("FoodId");
        if(!foodId.isEmpty()) {
            getDetailFood(foodId);
        }

        setTitle("Chi tiết");

        // calling the action bar
        ActionBar actionBar = getSupportActionBar();

        // showing the back button in action bar
        actionBar.setDisplayHomeAsUpEnabled(true);

    }

    private void getDetailFood(String foodId) {
        foods.child(foodId).addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                currentFood = dataSnapshot.getValue(Food.class);

                //Set Image
                Picasso.with(getBaseContext()).load(currentFood.getImage()).into(food_image);

                collapsingToolbarLayout.setTitle(currentFood.getName());

                food_price.setText(currentFood.getPrice());

                food_name.setText(currentFood.getName());

                food_description.setText(currentFood.getDescription());
            }

            @Override
            public void onCancelled(DatabaseError databaseError) {

            }
        });
    }

    @Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
        switch (item.getItemId()) {
            case android.R.id.home:
                this.finish();
                return true;
        }
        return super.onOptionsItemSelected(item);
    }
}