Restructure folders

Author: jetsaii

src/main/java/leetcode/api/StatsService.java

@@ -1,5 +1,7 @@
-package leetcode.api;
+package leetcode.api.controller;
 
+import leetcode.api.model.StatsResponse;
+import leetcode.api.service.StatsService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.GetMapping;
@@ -9,7 +11,7 @@
 @RestController
 public class UserController {
     @Autowired
-    StatsService statsService;
+    private StatsService statsService;
 
     @GetMapping(value ={"/{username}", "/"})
     public StatsResponse getStats(@PathVariable Optional<String> username) {

src/main/java/leetcode/api/UserController.java renamed to src/main/java/leetcode/api/controller/UserController.java

@@ -1,4 +1,4 @@
-package leetcode.api;
+package leetcode.api.model;
 
 public class StatsResponse {
     private final String status;

src/main/java/leetcode/api/StatsResponse.java renamed to src/main/java/leetcode/api/model/StatsResponse.java

@@ -0,0 +1,7 @@
+package leetcode.api.service;
+
+import leetcode.api.model.StatsResponse;
+
+public interface StatsService {
+    StatsResponse getStats(String username);
+}

src/main/java/leetcode/api/service/StatsService.java

@@ -1,5 +1,6 @@
-package leetcode.api;
+package leetcode.api.service;
 
+import leetcode.api.model.StatsResponse;
 import org.springframework.stereotype.Service;
 import java.io.IOException;
 import java.math.BigDecimal;

src/main/java/leetcode/api/StatsServiceImpl.java renamed to src/main/java/leetcode/api/service/StatsServiceImpl.java

@@ -1,5 +1,6 @@
 package leetcode.api;
 
+import leetcode.api.model.StatsResponse;
 import org.junit.jupiter.api.Test;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;

src/test/java/leetcode/api/StatsResponseTests.java

@@ -1,5 +1,8 @@
 package leetcode.api;
 
+import leetcode.api.controller.UserController;
+import leetcode.api.model.StatsResponse;
+import leetcode.api.service.StatsService;
 import org.junit.jupiter.api.Test;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.mockito.Mockito.when;