Add promotion apply for specific product

KBTG-Kampus-ClassNest-SE-Java · Mar 31, 2024 · 9016007 · 9016007
1 parent 57078a5
commit 9016007
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diff --git a/kbazaar/src/main/java/com/kampus/kbazaar/cart/CartController.java b/kbazaar/src/main/java/com/kampus/kbazaar/cart/CartController.java
@@ -1,6 +1,7 @@
 package com.kampus.kbazaar.cart;
 
-import com.kampus.kbazaar.promotion.PromotionApplyCartRequest;
+import com.kampus.kbazaar.promotion.Promotion;
+import com.kampus.kbazaar.promotion.PromotionService;
 import java.util.List;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
@@ -11,8 +12,11 @@ public class CartController {
 
     private final CartService cartService;
 
-    public CartController(CartService cartService) {
+    private final PromotionService promotionService;
+
+    public CartController(CartService cartService, PromotionService promotionService) {
         this.cartService = cartService;
+        this.promotionService = promotionService;
     }
 
     @GetMapping("/carts")
@@ -22,8 +26,7 @@ public ResponseEntity<List<CartResponse>> getCart() {
 
     @PostMapping("/carts/{username}/promotions")
     public CartResponse applyCartPromotion(
-            @PathVariable String username,
-            @RequestBody PromotionApplyCartRequest promotionApplyCartRequest) {
-        return cartService.applyCartPromotion(username, promotionApplyCartRequest);
+            @PathVariable String username, @RequestBody Promotion promotion) {
+        return promotionService.applyPromotion(username, promotion);
     }
 }
diff --git a/kbazaar/src/main/java/com/kampus/kbazaar/promotion/PromotionApplyCartRequest.java b/kbazaar/src/main/java/com/kampus/kbazaar/promotion/PromotionApplyCartRequest.java
@@ -1,3 +1,3 @@
 package com.kampus.kbazaar.promotion;
 
-public record PromotionApplyCartRequest(String code) {}
+public record PromotionApplyCartRequest(String code, String productSkus) {}
diff --git a/kbazaar/src/main/java/com/kampus/kbazaar/promotion/PromotionService.java b/kbazaar/src/main/java/com/kampus/kbazaar/promotion/PromotionService.java
@@ -1,15 +1,35 @@
 package com.kampus.kbazaar.promotion;
 
+import com.kampus.kbazaar.cart.CartRepository;
+import com.kampus.kbazaar.cart.CartResponse;
+import com.kampus.kbazaar.cartitem.CartItem;
+import com.kampus.kbazaar.cartitem.CartItemRepository;
+import com.kampus.kbazaar.cartitem.CartItemService;
 import com.kampus.kbazaar.exceptions.NotFoundException;
+import io.jsonwebtoken.lang.Strings;
 import java.util.List;
+import java.util.Set;
 import org.springframework.stereotype.Service;
 
 @Service
 public class PromotionService {
-    private PromotionRepository promotionRepository;
+    private final PromotionRepository promotionRepository;
 
-    public PromotionService(PromotionRepository promotionRepository) {
+    private final CartItemRepository cartItemRepository;
+
+    private final CartItemService cartItemService;
+
+    private final CartRepository cartRepository;
+
+    public PromotionService(
+            PromotionRepository promotionRepository,
+            CartItemRepository cartItemRepository,
+            CartRepository cartRepository,
+            CartItemService cartItemService) {
         this.promotionRepository = promotionRepository;
+        this.cartItemRepository = cartItemRepository;
+        this.cartRepository = cartRepository;
+        this.cartItemService = cartItemService;
     }
 
     public List<PromotionResponse> getAll() {
@@ -22,4 +42,23 @@ public PromotionResponse getPromotionByCode(String code) {
                 .map(Promotion::toResponse)
                 .orElseThrow(() -> new NotFoundException("Promotion not found"));
     }
+
+    public CartResponse applyPromotion(String username, Promotion promotion) {
+        List<CartItem> cartItems = cartItemRepository.findByUsername(username);
+
+        String[] productSkus = Strings.split(promotion.getProductSkus(), ",");
+        Set<String> productSkuSet = Set.of(productSkus);
+
+        for (CartItem item : cartItems) {
+            if (productSkuSet.contains(item.getSku())) {
+                item.setDiscount(promotion.getDiscountAmount().doubleValue());
+                item.setPromotionCodes(promotion.getCode());
+                cartItemRepository.save(item);
+            }
+        }
+
+        CartResponse response = cartItemService.getCartByUsername(username);
+
+        return response;
+    }
 }
diff --git a/kbazaar/src/test/java/com/kampus/kbazaar/cart/CartControllerTest.java b/kbazaar/src/test/java/com/kampus/kbazaar/cart/CartControllerTest.java
@@ -1,8 +1,11 @@
 package com.kampus.kbazaar.cart;
 
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
 
+import com.kampus.kbazaar.promotion.PromotionService;
 import com.kampus.kbazaar.security.JwtAuthFilter;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -32,6 +35,8 @@ public class CartControllerTest {
 
     @MockBean private CartService cartService;
 
+    @MockBean private PromotionService promotionService;
+
     @BeforeEach
     public void setup() {
         MockitoAnnotations.openMocks(this);
@@ -42,4 +47,17 @@ public void getCart_ReturnsOk() throws Exception {
         mockMvc.perform(get("/api/v1/carts").contentType(MediaType.APPLICATION_JSON))
                 .andExpect(status().isOk());
     }
+
+//    @Test
+//    public void getCards_ReturnsCorrectResponse() throws Exception {
+//        mockMvc.perform(get("/api/v1/carts").contentType(MediaType.APPLICATION_JSON))
+//                .andDo(print())
+//                .andExpect(jsonPath("$.username").value("TechNinja"))
+//                .andExpect(jsonPath("$.items").isArray())
+//                .andExpect(jsonPath("$.discount").value(0))
+//                .andExpect(jsonPath("$.totalDiscount").value(0))
+//                .andExpect(jsonPath("$.subtotal").value(1))
+//                .andExpect(jsonPath("$.grandTotal").value(1))
+//                .andExpect(status().isOk());
+//    }
 }
diff --git a/kbazaar/src/test/java/com/kampus/kbazaar/promotion/PromotionServiceTest.java b/kbazaar/src/test/java/com/kampus/kbazaar/promotion/PromotionServiceTest.java
@@ -3,7 +3,15 @@
 import static org.junit.jupiter.api.Assertions.*;
 import static org.mockito.Mockito.*;
 
+import com.kampus.kbazaar.cart.CartRepository;
+import com.kampus.kbazaar.cart.CartResponse;
+import com.kampus.kbazaar.cartitem.CartItem;
+import com.kampus.kbazaar.cartitem.CartItemRepository;
+import com.kampus.kbazaar.cartitem.CartItemResponse;
+import com.kampus.kbazaar.cartitem.CartItemService;
 import com.kampus.kbazaar.exceptions.NotFoundException;
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Optional;
@@ -18,6 +26,12 @@ class PromotionServiceTest {
 
     @Mock private PromotionRepository promotionRepository;
 
+    @Mock private CartItemRepository mockCartItemRepository;
+
+    @Mock private CartRepository mockCartRepository;
+
+    @Mock private CartItemService mockCartItemService;
+
     @InjectMocks private PromotionService promotionService;
 
     @BeforeEach
@@ -67,4 +81,89 @@ void getPromotionByCode_NonExistingCode_ShouldThrowNotFoundException() {
         // Act & Assert
         assertThrows(NotFoundException.class, () -> promotionService.getPromotionByCode(code));
     }
+
+    @Test
+    @DisplayName("should Appply Promotion To The RightProduct")
+    void shouldAppplyPromotionToTheRightProduct() {
+
+        // Mock repository method returning empty optional
+        PromotionService productService =
+                new PromotionService(
+                        promotionRepository,
+                        mockCartItemRepository,
+                        mockCartRepository,
+                        mockCartItemService);
+
+        Long promotionId = 1L;
+        String code = "SUMMER50";
+        String name = "Summer Sale";
+        String description = "Get 50% off on summer collection";
+        LocalDateTime startDate =
+                LocalDateTime.of(2024, 6, 1, 0, 0); // Start date: 2024-06-01 00:00
+        LocalDateTime endDate = LocalDateTime.of(2024, 6, 30, 23, 59); // End date: 2024-06-30 23:59
+        String discountType = "Percentage";
+        BigDecimal discountAmount = BigDecimal.valueOf(50); // 50% discount
+        BigDecimal maxDiscountAmount = BigDecimal.valueOf(100); // Maximum discount amount
+        String applicableTo = "Summer Collection";
+        String productSkus = "SKU001,SKU002,SKU003";
+        Integer minQuantity = 1;
+        Integer freeQuantity = 0;
+
+        Promotion promotion =
+                new Promotion(
+                        promotionId,
+                        code,
+                        name,
+                        description,
+                        startDate,
+                        endDate,
+                        discountType,
+                        discountAmount,
+                        maxDiscountAmount,
+                        applicableTo,
+                        productSkus,
+                        minQuantity,
+                        freeQuantity);
+
+        Long id = 1L;
+        String username = "john_doe";
+        String sku = "SKU001";
+        String nameCartItem = "Sample Product";
+        double price = 50.99;
+        Integer quantity = 1;
+        double discount = 50.00;
+        String promotionCodes = "SUMMER50";
+
+        CartItemResponse cartItemResponseExpected =
+                new CartItemResponse(
+                        id, username, sku, nameCartItem, price, quantity, discount, promotionCodes);
+
+        List<CartItem> cartItems =
+                List.of(
+                        CartItem.builder()
+                                .id(id)
+                                .username(username)
+                                .sku(sku)
+                                .name(nameCartItem)
+                                .price(price)
+                                .quantity(quantity)
+                                .discount(0)
+                                .promotionCodes("")
+                                .build());
+
+        when(mockCartItemRepository.findByUsername(username)).thenReturn(cartItems);
+        when(mockCartItemService.getCartByUsername(username))
+                .thenReturn(
+                        CartResponse.builder()
+                                .items(List.of(cartItemResponseExpected))
+                                .username(username)
+                                .build());
+
+        CartResponse cartResponseActual = promotionService.applyPromotion(username, promotion);
+
+        assertEquals(cartItemResponseExpected.username(), cartResponseActual.getUsername());
+        assertEquals(1, cartResponseActual.getItems().size());
+        assertEquals(promotionCodes, cartResponseActual.getItems().get(0).promotionCodes());
+        assertEquals(discount, cartResponseActual.getItems().get(0).discount());
+    }
 }