✅ Add getSubjectDetail - TbsubjectController

src/main/java/com/thc/realspr/controller/TbsubjectController.java

@@ -0,0 +1,59 @@
+package com.thc.realspr.controller;
+
+import com.thc.realspr.dto.TbmessageDto;
+import com.thc.realspr.dto.TbsubjectDto;
+import com.thc.realspr.dto.UserInteractionDto;
+import com.thc.realspr.service.TbKaFeedService;
+import com.thc.realspr.service.TbsubjectService;
+import io.swagger.v3.oas.annotations.Operation;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.validation.Valid;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.Map;
+
+@RequestMapping("/api/subject")
+@RestController
+public class TbsubjectController {
+
+    private final TbsubjectService tbsubjectService;
+
+    public TbsubjectController(
+            TbsubjectService tbsubjectService
+    ) {
+        this.tbsubjectService = tbsubjectService;
+    }
+
+    @Operation(summary = "주제 세부내용",
+            description = "주제의 id와 유저 id로 세부내용 조회 <br />"
+                    + "@param Long subjectId <br />"
+                    + "@return HttpStatus.OK(200) ResponseEntity\\<TbsubjectDto.DetailResDto\\> <br />"
+                    + "@exception 필수 파라미터 누락하였을 때 등 <br />"
+                    + "@exception 404 Not Found (주제 또는 유저를 찾을 수 없는 경우) <br />"
+                    + "@exception 400 Bad Request (필수 파라미터 누락 시)"
+    )
+    @GetMapping("/{subjectId}")
+    public ResponseEntity<TbsubjectDto.DetailResDto> getSubjectDetail(@Valid @PathVariable("subjectId") Long subjectId, HttpServletRequest request) {
+        String userId = (String) request.getAttribute("reqUserId");
+        if (userId == null) {
+            return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(null);
+        }
+
+        TbsubjectDto.DetailResDto detail = tbsubjectService.getDetail(
+                TbsubjectDto.DetailReqDto.builder()
+                        .subjectId(subjectId)
+                        .userId(userId)
+                        .build()
+        );
+
+        if (detail == null) {
+            return ResponseEntity.status(HttpStatus.NOT_FOUND).build();
+        }
+
+        return ResponseEntity.status(HttpStatus.OK).body(detail);
+    }
+
+
+}