diff --git a/app/src/main/java/com/capstone/foodify/API/FoodApi.java b/app/src/main/java/com/capstone/foodify/API/FoodApi.java
index 4d2ea5f..d4fc172 100644
--- a/app/src/main/java/com/capstone/foodify/API/FoodApi.java
+++ b/app/src/main/java/com/capstone/foodify/API/FoodApi.java
@@ -32,7 +32,7 @@ public interface FoodApi {
     Gson gson = new GsonBuilder().setDateFormat("HH:mm:ss dd-MM-yyyy").setLenient().create();
 
     FoodApi apiService = new Retrofit.Builder()
-            .baseUrl("https://foodify-backend-production.up.railway.app/api/").addConverterFactory(GsonConverterFactory.create(gson))
+            .baseUrl("http://192.168.1.183:8080/api/").addConverterFactory(GsonConverterFactory.create(gson))
             .build()
             .create(FoodApi.class);
 
@@ -93,4 +93,7 @@ public interface FoodApi {
 
     @GET("shops/{id}")
     Call<Shop> getShopById(@Path("id") int id);
+
+    @GET("products/{productId}/user")
+    Call<CustomResponse> checkUserBuyProduct(@Path("productId") int productId, @Query("userId") int userId);
 }
diff --git a/app/src/main/java/com/capstone/foodify/API/FoodApiToken.java b/app/src/main/java/com/capstone/foodify/API/FoodApiToken.java
index 821924e..784f591 100644
--- a/app/src/main/java/com/capstone/foodify/API/FoodApiToken.java
+++ b/app/src/main/java/com/capstone/foodify/API/FoodApiToken.java
@@ -47,7 +47,7 @@ public interface FoodApiToken {
 
     FoodApiToken apiService = new Retrofit.Builder()
             .client(client)
-            .baseUrl("https://foodify-backend-production.up.railway.app/api/").addConverterFactory(GsonConverterFactory.create(gson))
+            .baseUrl("http://192.168.1.183:8080/api/").addConverterFactory(GsonConverterFactory.create(gson))
             .build()
             .create(FoodApiToken.class);
 
diff --git a/app/src/main/java/com/capstone/foodify/Activity/FoodDetailActivity.java b/app/src/main/java/com/capstone/foodify/Activity/FoodDetailActivity.java
index 6cf350e..3c22528 100644
--- a/app/src/main/java/com/capstone/foodify/Activity/FoodDetailActivity.java
+++ b/app/src/main/java/com/capstone/foodify/Activity/FoodDetailActivity.java
@@ -73,7 +73,7 @@ public class FoodDetailActivity extends AppCompatActivity {
     private static final int PAGE_SIZE = 8;
     private static final String SORT_BY = "id";
     private static final String SORT_DIR = "asc";
-    private static boolean LAST_PAGE;
+    private static boolean LAST_PAGE, IS_BUY;
     private HorizontalQuantitizer horizontalQuantitizer;
     private ImageSlider imageSlider;
     private ImageView back_image, not_favorite, is_favorite, delete_button, edt_button;
@@ -149,6 +149,8 @@ public class FoodDetailActivity extends AppCompatActivity {
 
         hideUI();
 
+        checkUserBuyThisProduct();
+
 
 
         if(Common.CURRENT_USER == null){
@@ -195,10 +197,16 @@ public class FoodDetailActivity extends AppCompatActivity {
         rating_button.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                if(Common.CURRENT_USER != null)
-                    openCommentDialog(Gravity.CENTER, CREATE_COMMENT);
-                else
-                    startActivity(new Intent(FoodDetailActivity.this, SignInActivity.class));
+                if(Common.CURRENT_USER != null){
+                    if(IS_BUY){
+                        //If user already buy it
+                        openCommentDialog(Gravity.CENTER, CREATE_COMMENT);
+                    } else {
+                        //If not
+                        Toast.makeText(FoodDetailActivity.this, "Bạn cần phải mua sản phẩm trước khi bình luận!", Toast.LENGTH_SHORT).show();
+                    }
+                } else
+                    Toast.makeText(FoodDetailActivity.this, "Bạn cần phải đăng nhập để thực hiện hành động này!", Toast.LENGTH_SHORT).show();
             }
         });
 
@@ -267,6 +275,29 @@ public class FoodDetailActivity extends AppCompatActivity {
         });
     }
 
+    private void checkUserBuyThisProduct(){
+
+        if(Common.CURRENT_USER != null){
+            FoodApi.apiService.checkUserBuyProduct(Integer.parseInt(foodId), Common.CURRENT_USER.getId()).enqueue(new Callback<CustomResponse>() {
+                @Override
+                public void onResponse(Call<CustomResponse> call, Response<CustomResponse> response) {
+                    if(response.code() == 200){
+                        
+                        IS_BUY = response.body().isTrue();
+                        
+                    } else {
+                        Toast.makeText(FoodDetailActivity.this, "Đã xảy ra lỗi hệ thống! Mã lỗi: " + response.code(), Toast.LENGTH_SHORT).show();
+                    }
+                }
+
+                @Override
+                public void onFailure(Call<CustomResponse> call, Throwable t) {
+                    Toast.makeText(FoodDetailActivity.this, "Đã xảy ra lỗi kết nối đến hệ thống!", Toast.LENGTH_SHORT).show();
+                }
+            });
+        }
+    }
+
     private void isFavoriteIcon(){
         not_favorite.setVisibility(View.GONE);
         is_favorite.setVisibility(View.VISIBLE);
diff --git a/app/src/main/res/layout/activity_food_detail.xml b/app/src/main/res/layout/activity_food_detail.xml
index 4fb1071..df6a038 100644
--- a/app/src/main/res/layout/activity_food_detail.xml
+++ b/app/src/main/res/layout/activity_food_detail.xml
@@ -325,7 +325,7 @@
 
                 <Button
                     android:id="@+id/rating_button"
-                    android:text="Đánh giá"
+                    android:text="Bình luận"
                     android:backgroundTint="@color/yellow"
                     android:textColor="@color/black"
                     android:fontFamily="@font/opensans"