class2 first half

santhoshreddy0 · Oct 12, 2023 · 809945d · 809945d
1 parent 024f96d
commit 809945d
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Showing 4 changed files with 79 additions and 16 deletions.
diff --git a/src/main/java/com/example/productservice_proxy/Main2.java b/src/main/java/com/example/productservice_proxy/Main2.java
@@ -2,9 +2,20 @@
 
 import com.example.productservice_proxy.dtos.ProductDto;
 
+import java.util.List;
+
 public class Main2 {
     public static void main(String[] args) {
         ProductDto productDto =  new ProductDto();
         System.out.println(productDto.toString());
+        List<Integer> l1 = List.of(1, 2, 3, 4);
+        List<String> l2 = List.of(
+                "Hello",
+                "Hi",
+                "Hey"
+        );
+
+        System.out.println(l1.getClass().getName());
+        System.out.println(l2.getClass().getName());
     }
 }
diff --git a/src/main/java/com/example/productservice_proxy/controllers/ProductController.java b/src/main/java/com/example/productservice_proxy/controllers/ProductController.java
@@ -6,8 +6,14 @@
 import com.example.productservice_proxy.services.ProductService;
 import lombok.NonNull;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
 import org.springframework.web.bind.annotation.*;
 
+import java.util.List;
+
 
 // This controller will always answer products
 @RestController
@@ -21,19 +27,35 @@ public ProductController(IProductService productService) {
     }
 
     @GetMapping("")
-    public String getAllProducts() {
-        return "Getting all the products";
+    public ResponseEntity<List<Product>> getAllProducts() {
+        return new ResponseEntity<>(this.productService.getAllProducts(), HttpStatus.OK);
     }
 
+
     @GetMapping("/{id}")
-    public Product getSingleProduct(@PathVariable("id") Long productId) {
-        Product product = this.productService.getSingleProduct(productId);
-        return product;
+    public ResponseEntity<Product> getSingleProduct(@PathVariable("id") Long productId) {
+        try {
+            MultiValueMap<String, String> headers = new LinkedMultiValueMap<>();
+            headers.add("Accept", "application/json");
+            headers.add("Content-Type", "application/json");
+            headers.add("auth-token", "heyaccess");
+            Product product = this.productService.getSingleProduct(productId);
+            if(productId < 1) {
+                throw new IllegalArgumentException("Something went wrong");
+            }
+            ResponseEntity<Product> responseEntity = new ResponseEntity<>(product, headers, HttpStatus.OK);
+            return responseEntity;
+        } catch (Exception e) {
+            ResponseEntity<Product> responseEntity = new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
+            return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR); // 500 error code
+        }
     }
 
     @PostMapping()
-    public String addNewProduct(@RequestBody ProductDto productDto) {
-        return "Adding new product " + productDto;
+    public ResponseEntity<Product> addNewProduct(@RequestBody ProductDto productDto) {
+        Product product = this.productService.addNewProduct(productDto);
+        ResponseEntity<Product> responseEntity = new ResponseEntity<>(product, HttpStatus.OK);
+        return responseEntity;
     }
 
     @PutMapping("/{productId}")

diff --git a/src/main/java/com/example/productservice_proxy/services/IProductService.java b/src/main/java/com/example/productservice_proxy/services/IProductService.java
@@ -3,12 +3,14 @@
 import com.example.productservice_proxy.dtos.ProductDto;
 import com.example.productservice_proxy.models.Product;
 
+import java.util.List;
+
 public interface IProductService {
-    String getAllProducts();
+    List<Product> getAllProducts();
 
     Product getSingleProduct(Long productId);
 
-    String addNewProduct(ProductDto productDto);
+    Product addNewProduct(ProductDto productDto);
 
     String updateProduct(Long productId);
 

diff --git a/src/main/java/com/example/productservice_proxy/services/ProductService.java b/src/main/java/com/example/productservice_proxy/services/ProductService.java
@@ -4,36 +4,64 @@
 import com.example.productservice_proxy.models.Product;
 import com.example.productservice_proxy.models.Categories;
 import org.springframework.boot.web.client.RestTemplateBuilder;
+import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Service;
 import org.springframework.web.client.RestTemplate;
 
+import java.util.ArrayList;
+import java.util.List;
+
 @Service
 public class ProductService implements IProductService {
     private RestTemplateBuilder restTemplateBuilder;
     public ProductService(RestTemplateBuilder restTemplateBuilder) {
         this.restTemplateBuilder = restTemplateBuilder;
     }
     @Override
-    public String getAllProducts() {
-        return null;
+    public List<Product> getAllProducts() {
+        RestTemplate restTemplate = restTemplateBuilder.build();
+        ResponseEntity<ProductDto[]> productDtos =
+                restTemplate
+                        .getForEntity("https://fakestoreapi.com/products", ProductDto[].class);
+
+
+        List<Product> answer = new ArrayList<>();
+
+        for (ProductDto productDto: productDtos.getBody()) {
+            Product product = new Product();
+            product.setId(productDto.getId());
+            product.setTitle(productDto.getTitle());
+            product.setPrice(productDto.getPrice());
+            Categories category = new Categories();
+            category.setName(productDto.getCategory());
+            product.setCategory(category);
+            product.setImageUrl(productDto.getImage());
+            answer.add(product);
+        }
+        return answer;
     }
 
 
     @Override
     public Product getSingleProduct(Long productId) {
+
         RestTemplate restTemplate = restTemplateBuilder.build();
-        ProductDto productDto =
+        ResponseEntity<ProductDto> productDto =
                 restTemplate.getForEntity("https://fakestoreapi.com/products/{id}",
-                        ProductDto.class, productId).getBody();
+                        ProductDto.class, productId);
 
-        Product product = getProduct(productDto);
+        Product product = getProduct(productDto.getBody());
 
         return product;
     }
 
     @Override
-    public String addNewProduct(ProductDto productDto) {
-        return null;
+    public Product addNewProduct(ProductDto productDto) {
+        RestTemplate restTemplate= restTemplateBuilder.build();
+        restTemplate.postForEntity("https://fakestoreapi.com/products", productDto, ProductDto.class);
+        // saving the data for db
+        Product product = getProduct(productDto);
+        return product;
     }