Agregado filtro en productos

app/src/main/java/com/cesanelli/lajusta/io/models/Category.java

@@ -2,6 +2,8 @@ package com.cesanelli.lajusta.io.models;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 
+import java.util.Objects;
+
 @JsonIgnoreProperties
 public class Category {
     private int id;
@@ -9,6 +11,14 @@ public class Category {
     private String name;
     private int level;
 
+    public Category() {
+    }
+
+    public Category(int id, String name) {
+        this.id = id;
+        this.name = name;
+    }
+
     public int getId() {
         return id;
     }
@@ -40,4 +50,23 @@ public class Category {
     public void setLevel(int level) {
         this.level = level;
     }
+
+    @Override
+    public String toString() {
+        if (name.length() == 0) return name;
+        return name.toUpperCase().substring(0, 1) + name.toLowerCase().substring(1);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Category category = (Category) o;
+        return id == category.id;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
 }

app/src/main/java/com/cesanelli/lajusta/ui/ProductsFragment.java

@@ -4,6 +4,9 @@ import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
 import android.widget.Toast;
 
 import androidx.annotation.NonNull;
@@ -16,6 +19,7 @@ import androidx.recyclerview.widget.RecyclerView;
 
 import com.cesanelli.lajusta.R;
 import com.cesanelli.lajusta.databinding.FragmentProductsListBinding;
+import com.cesanelli.lajusta.io.models.Category;
 import com.cesanelli.lajusta.io.models.Product;
 import com.cesanelli.lajusta.ui.viewmodel.CartViewModel;
 import com.cesanelli.lajusta.ui.viewmodel.ProductListViewModel;
@@ -23,7 +27,7 @@ import com.cesanelli.lajusta.ui.viewmodel.ProductViewModel;
 
 import java.util.ArrayList;
 
-public class ProductsFragment extends Fragment implements ProductsRecyclerViewAdapter.OnProductListener {
+public class ProductsFragment extends Fragment implements ProductsRecyclerViewAdapter.OnProductListener, AdapterView.OnItemSelectedListener {
     private ProductViewModel productViewModel;
     private ProductListViewModel productListViewModel;
     private CartViewModel cartViewModel;
@@ -68,6 +72,15 @@ public class ProductsFragment extends Fragment implements ProductsRecyclerViewAd
                 recyclerView.setAdapter(new ProductsRecyclerViewAdapter((ArrayList<Product>) list, this));
             }
         });
+        productListViewModel.getCategories().observe(getViewLifecycleOwner(), categories -> {
+            if (categories != null) {
+                Spinner categoriesSpinner = (Spinner) view.findViewById(R.id.categories);
+                ArrayAdapter adapter = new ArrayAdapter(getContext(), android.R.layout.simple_spinner_item, categories);
+                adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+                categoriesSpinner.setAdapter(adapter);
+                categoriesSpinner.setOnItemSelectedListener(this);
+            }
+        });
     }
 
     @Override
@@ -79,7 +92,16 @@ public class ProductsFragment extends Fragment implements ProductsRecyclerViewAd
     @Override
     public void onProductAdd(Product product) {
         cartViewModel.addProduct(product);
-        Toast.makeText(getContext(),"Se agregó " + product.getTitle() + " al carrito.",Toast.LENGTH_SHORT).show();
+        Toast.makeText(getContext(), "Se agregó " + product.getTitle() + " al carrito.", Toast.LENGTH_SHORT).show();
+    }
+
+    @Override
+    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
+        productListViewModel.setCategory((Category) parent.getItemAtPosition(position));
     }
 
+    @Override
+    public void onNothingSelected(AdapterView<?> parent) {
+
+    }
 }
\ No newline at end of file

app/src/main/java/com/cesanelli/lajusta/ui/viewmodel/ProductListViewModel.java

@@ -5,10 +5,14 @@ import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.ViewModel;
 
 import com.cesanelli.lajusta.io.ApiAdapter;
+import com.cesanelli.lajusta.io.models.Category;
 import com.cesanelli.lajusta.io.models.Product;
 
 import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 
 import retrofit2.Call;
 import retrofit2.Callback;
@@ -17,6 +21,8 @@ import retrofit2.Response;
 public class ProductListViewModel extends ViewModel {
 
     private MutableLiveData<List<Product>> products;
+    private ArrayList<Product> productList;
+    private MutableLiveData<List<Category>> categories;
 
     public LiveData<List<Product>> getProductList() {
         if (products == null) {
@@ -27,11 +33,46 @@ public class ProductListViewModel extends ViewModel {
     }
 
     public void setProductList(List<Product> products) {
+        this.productList = (ArrayList<Product>) products;
+
+        Set<Category> categoriesList = new HashSet<Category>();
+        for (Product p : products) {
+            categoriesList.addAll(Arrays.asList(p.getCategories()));
+        }
+
+        ArrayList<Category> categories = new ArrayList<Category>();
+        categories.add(new Category(0, ""));
+        categories.addAll(categoriesList);
+
         this.products.setValue(products);
+        this.categories.setValue(categories);
+    }
+
+    public LiveData<List<Category>> getCategories() {
+        if (categories == null) {
+            categories = new MutableLiveData<List<Category>>();
+        }
+        return categories;
+    }
+
+    public void setCategory(Category category) {
+        if (category == null || category.getId() == 0) {
+            this.products.setValue(productList);
+            return;
+        }
+        ArrayList<Product> filteredProducts = new ArrayList<Product>();
+        for (Product p : productList) {
+            for (Category c : p.getCategories()) {
+                if (c.getId() == category.getId()) {
+                    filteredProducts.add(p);
+                    break;
+                }
+            }
+        }
+        this.products.setValue(filteredProducts);
     }
 
     private void loadProducts() {
-        List<Product> products = new ArrayList<Product>();
         Call<ArrayList<Product>> call = ApiAdapter.getApiService().getProducts();
         call.enqueue(new Callback<ArrayList<Product>>() {
 
@@ -42,11 +83,13 @@ public class ProductListViewModel extends ViewModel {
                         setProductList(response.body());
                     }
                 } catch (Exception ex) {
+                    System.out.println(ex.toString());
                 }
             }
 
             @Override
             public void onFailure(Call<ArrayList<Product>> call, Throwable t) {
+                System.out.println(t.toString());
             }
         });
     }

app/src/main/res/layout/fragment_products_list.xml

@@ -16,6 +16,18 @@
         android:layout_height="match_parent"
         tools:context=".ui.CartFragment">
 
+        <Spinner
+            android:id="@+id/categories"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="150dp"
+            android:layout_marginTop="10dp"
+            android:layout_marginEnd="20dp"
+            android:textAlignment="textEnd"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
         <androidx.recyclerview.widget.RecyclerView
             android:id="@+id/listProducts"
             android:layout_width="match_parent"
@@ -27,7 +39,7 @@
             app:layout_constraintBottom_toTopOf="@+id/totalLayout"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/categories"
             tools:context=".ui.ProductsFragment"
             tools:listitem="@layout/fragment_products" />
 
@@ -49,7 +61,7 @@
                 android:layout_height="wrap_content"
                 android:layout_weight="1"
                 android:padding="10dp"
-                android:text="Cantidad" />
+                android:text="@string/cantidad" />
 
             <TextView
                 android:id="@+id/txtQuantity"
@@ -65,7 +77,7 @@
                 android:layout_height="wrap_content"
                 android:layout_weight="1"
                 android:padding="10dp"
-                android:text="Total $" />
+                android:text="@string/totalPesos" />
 
             <TextView
                 android:id="@+id/txtTotal"
@@ -75,6 +87,5 @@
                 android:padding="10dp"
                 android:text="@{String.valueOf(cart.total)}" />
         </LinearLayout>
-
     </androidx.constraintlayout.widget.ConstraintLayout>
 </layout>
\ No newline at end of file

app/src/main/res/values/strings.xml

@@ -21,4 +21,6 @@
     <string name="btn_login">Login</string>
     <string name="btn_register">Registrar</string>
     <string name="btn_buy">Comprar</string>
+    <string name="cantidad">Cantidad</string>
+    <string name="totalPesos">Total $</string>
 </resources>
\ No newline at end of file