feat(interview): 세션을 기준으로 미션을 필터링

backend/src/main/java/wooteco/prolog/session/application/MissionService.java

@@ -46,6 +46,10 @@ public List<MissionResponse> findAll() {
         return MissionResponse.listOf(missionRepository.findAll());
     }
 
+    public List<MissionResponse> findAllBySessionId(final long sessionId) {
+        return MissionResponse.listOf(missionRepository.findBySessionId(sessionId));
+    }
+
     public Mission findById(Long id) {
         return missionRepository.findById(id)
             .orElseThrow(() -> new BadRequestException(MISSION_NOT_FOUND));

backend/src/main/java/wooteco/prolog/session/domain/repository/MissionRepository.java

@@ -10,4 +10,6 @@ public interface MissionRepository extends JpaRepository<Mission, Long> {
     Optional<Mission> findByName(String name);
 
     List<Mission> findBySessionIdIn(List<Long> sessionIds);
+
+    List<Mission> findBySessionId(long sessionId);
 }

backend/src/main/java/wooteco/prolog/session/ui/MissionController.java

@@ -1,11 +1,11 @@
 package wooteco.prolog.session.ui;
 
-import java.util.List;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;
 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.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 import wooteco.prolog.login.aop.MemberOnly;
 import wooteco.prolog.login.domain.AuthMemberPrincipal;
@@ -14,6 +14,8 @@
 import wooteco.prolog.session.application.dto.MissionRequest;
 import wooteco.prolog.session.application.dto.MissionResponse;
 
+import java.util.List;
+
 @RestController
 @RequestMapping("/missions")
 public class MissionController {
@@ -25,9 +27,14 @@ public MissionController(MissionService missionService) {
     }
 
     @GetMapping
-    public ResponseEntity<List<MissionResponse>> showMissions() {
-        List<MissionResponse> responses = missionService.findAll();
-        return ResponseEntity.ok(responses);
+    public ResponseEntity<List<MissionResponse>> showMissions(
+        @RequestParam(required = false) final Long sessionId
+    ) {
+        if (sessionId == null) {
+            return ResponseEntity.ok(missionService.findAll());
+        } else {
+            return ResponseEntity.ok(missionService.findAllBySessionId(sessionId));
+        }
     }
 
     @MemberOnly