feat: Add order retrieval functionality

- Implement endpoints to retrieve a single order by ID.
- Implement endpoints to retrieve all orders for a specific customer.
- Enhance OrdersRepository to support querying orders by customer ID.
- Add corresponding methods in OrdersService for order retrieval.

src/main/java/com/vegamarket/orderservice/controller/OrdersController.java

@@ -6,10 +6,9 @@ import com.vegamarket.orderservice.services.OrdersService;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
 
 @RestController
 @RequestMapping("/orders")
@@ -21,4 +20,14 @@ public class OrdersController {
     public ResponseEntity<Orders> create(@RequestBody NewOrderDTO createDTO) {
        return new ResponseEntity<>(ordersService.createOrder(createDTO), HttpStatus.CREATED);
     }
+
+    @GetMapping("{orderId}")
+    public ResponseEntity<Orders> get(@PathVariable Long orderId) {
+       return ResponseEntity.ok().body(ordersService.getById(orderId));
+    }
+
+    @GetMapping("/customer/{customerId}")
+    public ResponseEntity<List<Orders>> getAllByCustomer(@PathVariable Long customerId) {
+        return ResponseEntity.ok().body(ordersService.getAllByCustomerId(customerId));
+    }
 }

src/main/java/com/vegamarket/orderservice/model/OrdersRepository.java

@@ -2,5 +2,8 @@ package com.vegamarket.orderservice.model;
 
 import org.springframework.data.jpa.repository.JpaRepository;
 
+import java.util.List;
+
 public interface OrdersRepository extends JpaRepository<Orders, Long> {
+    List<Orders> findALlByCustomerId(Long customerId);
 }

src/main/java/com/vegamarket/orderservice/services/OrdersService.java

@@ -31,6 +31,18 @@ public class OrdersService {
         return order;
     }
 
+    public Orders getById(Long id) {
+        Orders order = ordersRepository.findById(id).orElseThrow(() -> {
+            throw new RuntimeException("Order not found");
+        });
+
+        return order;
+    }
+
+    public List<Orders> getAllByCustomerId(Long  customerId) {
+        return ordersRepository.findALlByCustomerId(customerId);
+    }
+
     private BigDecimal getTotalAmount(List<OrderItems> items) {
         BigDecimal totalAmount = BigDecimal.ZERO;
         for (OrderItems item : items) {