Factory Design added on Category items , ViewAllActivity, Query

app/src/main/java/com/example/projecto/activities/ViewAllActivity.java

@@ -14,30 +14,26 @@
 import com.example.projecto.R;
 import com.example.projecto.adapters.ViewAllAdapters;
 import com.example.projecto.models.ViewAllModel;
+import com.example.projecto.queries.ProductQuery;
+import com.example.projecto.queries.ProductQueryFactory;
 import com.google.android.gms.tasks.OnCompleteListener;
 import com.google.android.gms.tasks.Task;
 import com.google.firebase.firestore.DocumentSnapshot;
 import com.google.firebase.firestore.FirebaseFirestore;
 import com.google.firebase.firestore.QuerySnapshot;
-import com.google.firebase.ktx.Firebase;
 
 import java.util.ArrayList;
 import java.util.List;
 
 public class ViewAllActivity extends AppCompatActivity {
 
-
     FirebaseFirestore firestore;
     RecyclerView recyclerView;
     ViewAllAdapters viewAllAdapters;
-
     List<ViewAllModel> viewAllModelList;
-
     Toolbar toolbar;
-
     ProgressBar progressBar;
 
-
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -68,65 +64,28 @@ public void onClick(View v) {
         viewAllAdapters = new ViewAllAdapters(this, viewAllModelList);
         recyclerView.setAdapter(viewAllAdapters);
 
-        if (type != null && type.equalsIgnoreCase("medication")){
-            firestore.collection("Allproducts").whereEqualTo("type","medication").get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
-                @Override
-                public void onComplete(@NonNull Task<QuerySnapshot> task) {
-                    if (task.isSuccessful()) {
-                        for (DocumentSnapshot documentSnapshot : task.getResult().getDocuments()) {
-                            ViewAllModel viewAllModel = documentSnapshot.toObject(ViewAllModel.class);
-                            viewAllModelList.add(viewAllModel);
-                            viewAllAdapters.notifyDataSetChanged();
-                            progressBar.setVisibility(View.GONE);
-                            recyclerView.setVisibility(View.VISIBLE);
-                        }
-                    }
-                    else{
-                        Toast.makeText(ViewAllActivity.this, ""+task.getException(), Toast.LENGTH_SHORT).show();
-                    }
-                }
-            });
-        }
-
-        if (type != null && type.equalsIgnoreCase("health")){
-            firestore.collection("Allproducts").whereEqualTo("type","health").get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
-                @Override
-                public void onComplete(@NonNull Task<QuerySnapshot> task) {
-                    if (task.isSuccessful()) {
-                        for (DocumentSnapshot documentSnapshot : task.getResult().getDocuments()) {
-                            ViewAllModel viewAllModel = documentSnapshot.toObject(ViewAllModel.class);
-                            viewAllModelList.add(viewAllModel);
-                            viewAllAdapters.notifyDataSetChanged();
-                            progressBar.setVisibility(View.GONE);
-                            recyclerView.setVisibility(View.VISIBLE);
-                        }
-                    }
-                    else{
-                        Toast.makeText(ViewAllActivity.this, ""+task.getException(), Toast.LENGTH_SHORT).show();
-                    }
-                }
-            });
+        if (type != null) {
+            fetchProducts(type);
         }
+    }
 
-        if (type != null && type.equalsIgnoreCase("personal")){
-            firestore.collection("Allproducts").whereEqualTo("type","personal").get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
-                @Override
-                public void onComplete(@NonNull Task<QuerySnapshot> task) {
-                    if (task.isSuccessful()) {
-                        for (DocumentSnapshot documentSnapshot : task.getResult().getDocuments()) {
-                            ViewAllModel viewAllModel = documentSnapshot.toObject(ViewAllModel.class);
-                            viewAllModelList.add(viewAllModel);
-                            viewAllAdapters.notifyDataSetChanged();
-                            progressBar.setVisibility(View.GONE);
-                            recyclerView.setVisibility(View.VISIBLE);
-                        }
-                    }
-                    else{
-                        Toast.makeText(ViewAllActivity.this, ""+task.getException(), Toast.LENGTH_SHORT).show();
+    private void fetchProducts(String type) {
+        ProductQuery productQuery = ProductQueryFactory.createQuery(type, firestore);
+        productQuery.fetchProducts().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
+            @Override
+            public void onComplete(@NonNull Task<QuerySnapshot> task) {
+                if (task.isSuccessful()) {
+                    for (DocumentSnapshot documentSnapshot : task.getResult().getDocuments()) {
+                        ViewAllModel viewAllModel = documentSnapshot.toObject(ViewAllModel.class);
+                        viewAllModelList.add(viewAllModel);
+                        viewAllAdapters.notifyDataSetChanged();
                     }
+                    progressBar.setVisibility(View.GONE);
+                    recyclerView.setVisibility(View.VISIBLE);
+                } else {
+                    Toast.makeText(ViewAllActivity.this, "" + task.getException(), Toast.LENGTH_SHORT).show();
                 }
-            });
-        }
-
+            }
+        });
     }
-}
+}

app/src/main/java/com/example/projecto/adapters/ViewAllAdapters.java

@@ -21,7 +21,6 @@
 import java.util.List;
 
 public class ViewAllAdapters extends RecyclerView.Adapter<ViewAllAdapters.ViewHolder> {
-
     Context context;
     List<ViewAllModel> viewAllModelList;
 

app/src/main/java/com/example/projecto/queries/HealthQuery.java

@@ -0,0 +1,18 @@
+package com.example.projecto.queries;
+
+import com.google.android.gms.tasks.Task;
+import com.google.firebase.firestore.FirebaseFirestore;
+import com.google.firebase.firestore.QuerySnapshot;
+
+public class HealthQuery implements ProductQuery {
+    private FirebaseFirestore firestore;
+
+    public HealthQuery(FirebaseFirestore firestore) {
+        this.firestore = firestore;
+    }
+
+    @Override
+    public Task<QuerySnapshot> fetchProducts() {
+        return firestore.collection("Allproducts").whereEqualTo("type", "health").get();
+    }
+}

app/src/main/java/com/example/projecto/queries/MedicationQuery.java

@@ -0,0 +1,18 @@
+package com.example.projecto.queries;
+
+import com.google.android.gms.tasks.Task;
+import com.google.firebase.firestore.FirebaseFirestore;
+import com.google.firebase.firestore.QuerySnapshot;
+
+public class MedicationQuery implements ProductQuery {
+    private FirebaseFirestore firestore;
+
+    public MedicationQuery(FirebaseFirestore firestore) {
+        this.firestore = firestore;
+    }
+
+    @Override
+    public Task<QuerySnapshot> fetchProducts() {
+        return firestore.collection("Allproducts").whereEqualTo("type", "medication").get();
+    }
+}

app/src/main/java/com/example/projecto/queries/PersonalQuery.java

@@ -0,0 +1,18 @@
+package com.example.projecto.queries;
+
+import com.google.android.gms.tasks.Task;
+import com.google.firebase.firestore.FirebaseFirestore;
+import com.google.firebase.firestore.QuerySnapshot;
+
+public class PersonalQuery implements ProductQuery {
+    private FirebaseFirestore firestore;
+
+    public PersonalQuery(FirebaseFirestore firestore) {
+        this.firestore = firestore;
+    }
+
+    @Override
+    public Task<QuerySnapshot> fetchProducts() {
+        return firestore.collection("Allproducts").whereEqualTo("type", "personal").get();
+    }
+}

app/src/main/java/com/example/projecto/queries/ProductQuery.java

@@ -0,0 +1,8 @@
+package com.example.projecto.queries;
+
+import com.google.android.gms.tasks.Task;
+import com.google.firebase.firestore.QuerySnapshot;
+
+public interface ProductQuery {
+    Task<QuerySnapshot> fetchProducts();
+}

app/src/main/java/com/example/projecto/queries/ProductQueryFactory.java

@@ -0,0 +1,18 @@
+package com.example.projecto.queries;
+
+import com.google.firebase.firestore.FirebaseFirestore;
+
+public class ProductQueryFactory {
+    public static ProductQuery createQuery(String type, FirebaseFirestore firestore) {
+        switch (type.toLowerCase()) {
+            case "medication":
+                return new MedicationQuery(firestore);
+            case "health":
+                return new HealthQuery(firestore);
+            case "personal":
+                return new PersonalQuery(firestore);
+            default:
+                throw new IllegalArgumentException("Unknown type: " + type);
+        }
+    }
+}

app/src/test/java/com/example/projecto/activities/ViewAllActivityTest.java

@@ -0,0 +1,15 @@
+package com.example.projecto.activities;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+
+import com.example.projecto.models.ViewAllModel;
+
+
+public class ViewAllActivityTest {
+
+}

build.gradle.kts

@@ -7,4 +7,4 @@ buildscript {
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {
     id("com.android.application") version "8.4.0" apply false
-}
+}