Merge pull request #12 from 7th-UMC-Hackathon-TeamV/feat/groupcode

feat: 그룹코드 생성 API

src/main/java/banban/springboot/domain/entity/Group.java → src/main/java/banban/springboot/domain/entity/TeamGroup.java

@@ -9,7 +9,7 @@
 @Builder
 @NoArgsConstructor
 @AllArgsConstructor
-public class Group {
+public class TeamGroup {
 
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)

src/main/java/banban/springboot/repository/GroupRepository.java

@@ -0,0 +1,8 @@
+package banban.springboot.repository;
+
+import banban.springboot.domain.entity.TeamGroup;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface GroupRepository extends JpaRepository<TeamGroup, Long> {
+    boolean existsByGroupKey(String groupKey);
+}

src/main/java/banban/springboot/service/GroupService.java

@@ -0,0 +1,40 @@
+package banban.springboot.service;
+
+import banban.springboot.domain.entity.TeamGroup;
+import banban.springboot.repository.GroupRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.security.SecureRandom;
+
+@Service
+public class GroupService {
+    @Autowired
+    private GroupRepository groupRepository;
+
+    // 그룹코드 생성
+    public TeamGroup createGroupCode() {
+        String groupCode = generateUniqueGroupCode();
+        TeamGroup teamGroup = new TeamGroup();
+        teamGroup.setGroupKey(groupCode);
+
+        return groupRepository.save(teamGroup);
+    }
+
+    // 중복되지 않는 6글자 그룹코드 생성
+    private String generateUniqueGroupCode() {
+        String characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+        SecureRandom random = new SecureRandom();
+        StringBuilder code;
+
+        do {
+            code = new StringBuilder();
+            for (int i = 0; i < 6; i++) {
+                int index = random.nextInt(characters.length());
+                code.append(characters.charAt(index));
+            }
+        } while (groupRepository.existsByGroupKey(code.toString()));
+
+        return code.toString();
+    }
+}

src/main/java/banban/springboot/web/controller/GroupController.java

@@ -0,0 +1,33 @@
+package banban.springboot.web.controller;
+
+import banban.springboot.apiPayload.ApiResponse;
+import banban.springboot.domain.entity.TeamGroup;
+import banban.springboot.service.GroupService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.responses.ApiResponses;
+import lombok.RequiredArgsConstructor;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequiredArgsConstructor
+@Validated
+@RequestMapping("/api")
+public class GroupController {
+
+    private final GroupService groupService;
+
+    @PostMapping("/random-group")
+    @Operation(summary = "그룹 코드 생성 API",description = "그룹 코드 생성하는 API입니다.")
+    @ApiResponses({
+            @io.swagger.v3.oas.annotations.responses.ApiResponse(responseCode = "COMMON200",description = "OK, 성공"),
+    })
+    public ApiResponse<String> updatePromotionProject(){
+
+        TeamGroup newGroup = groupService.createGroupCode();
+
+        return ApiResponse.onSuccess(newGroup.getGroupKey());
+    }
+}