[#22] Feat: FastAPI 생성 여행 계획 저장 API 구현

Author: Yujin1219

src/main/java/com/example/triptalk/domain/tripPlan/controller/TripPlanController.java

@@ -58,4 +58,31 @@ public ApiResponse<TripPlanResponse.TripPlanStatusDTO> markTripPlanAsTraveled(
         TripPlanResponse.TripPlanStatusDTO response = tripPlanService.changeTripPlanStatusToTraveled(tripPlanId, userId);
         return ApiResponse.onSuccess(response);
     }
+
+    @PostMapping("/from-fastapi")
+    @Operation(
+            summary = "FastAPI 생성 여행 계획 저장",
+            description = """
+                    **FastAPI에서 생성된 여행 계획을 DB에 저장합니다.**
+                    
+                    ### 📝 저장 데이터
+                    - 여행 기본 정보 (제목, 출발지, 목적지, 날짜, 예산 등)
+                    - 하이라이트 목록
+                    - 일별 상세 일정 (DailySchedule + ScheduleItem)
+                    - 교통편 정보 (출발편, 귀환편)
+                    - 숙소 정보
+                    
+                    ### 🔐 인증
+                    - Authorization 헤더에 Bearer 토큰 필요
+                    - 로그인한 사용자의 여행 계획으로 저장
+                    """
+    )
+    public ApiResponse<TripPlanResponse.TripPlanDTO> createTripPlanFromFastAPI(
+            @RequestBody com.example.triptalk.domain.tripPlan.dto.TripPlanRequest.CreateFromFastAPIDTO request,
+            HttpServletRequest httpRequest
+    ) {
+        Long userId = authUtil.getUserIdFromRequest(httpRequest);
+        TripPlanResponse.TripPlanDTO response = tripPlanService.createTripPlanFromFastAPI(userId, request);
+        return ApiResponse.onSuccess(response);
+    }
 }

src/main/java/com/example/triptalk/domain/tripPlan/service/TripPlanService.java

@@ -1,5 +1,6 @@
 package com.example.triptalk.domain.tripPlan.service;
 
+import com.example.triptalk.domain.tripPlan.dto.TripPlanRequest;
 import com.example.triptalk.domain.tripPlan.dto.TripPlanResponse;
 import com.example.triptalk.domain.tripPlan.enums.TripStatus;
 
@@ -13,4 +14,7 @@ public interface TripPlanService {
 
     // 여행 상태 변경: PLANNED -> TRAVELED
     TripPlanResponse.TripPlanStatusDTO changeTripPlanStatusToTraveled(Long tripPlanId, Long userId);
+
+    // FastAPI에서 생성된 여행 계획 저장
+    TripPlanResponse.TripPlanDTO createTripPlanFromFastAPI(Long userId, TripPlanRequest.CreateFromFastAPIDTO request);
 }

src/main/java/com/example/triptalk/domain/tripPlan/service/TripPlanServiceImpl.java

@@ -2,7 +2,7 @@
 
 import com.example.triptalk.domain.tripPlan.converter.TripPlanConverter;
 import com.example.triptalk.domain.tripPlan.dto.TripPlanResponse;
-import com.example.triptalk.domain.tripPlan.entity.TripPlan;
+import com.example.triptalk.domain.tripPlan.entity.*;
 import com.example.triptalk.domain.tripPlan.enums.TripStatus;
 import com.example.triptalk.domain.tripPlan.repository.*;
 import com.example.triptalk.global.apiPayload.code.status.ErrorStatus;
@@ -25,6 +25,7 @@ public class TripPlanServiceImpl implements TripPlanService {
     private final TripAccommodationRepository tripAccommodationRepository;
     private final DailyScheduleRepository dailyScheduleRepository;
     private final TripHighlightRepository tripHighlightRepository;
+    private final com.example.triptalk.domain.user.repository.UserRepository userRepository;
 
     @Override
     public TripPlanResponse.TripPlanDTO getTripPlan(Long tripPlanId, Long userId) {
@@ -93,4 +94,63 @@ public TripPlanResponse.TripPlanStatusDTO changeTripPlanStatusToTraveled(Long tr
 
         return TripPlanConverter.toTripPlanStatusDTO(tripPlan);
     }
+
+    @Override
+    @Transactional
+    public TripPlanResponse.TripPlanDTO createTripPlanFromFastAPI(Long userId, com.example.triptalk.domain.tripPlan.dto.TripPlanRequest.CreateFromFastAPIDTO request) {
+        // 1. User 조회
+        com.example.triptalk.domain.user.entity.User user = userRepository.findById(userId)
+                .orElseThrow(() -> new ErrorHandler(ErrorStatus.USER_NOT_FOUND));
+
+        // 2. TripPlan 생성 (Converter 사용)
+        TripPlan tripPlan = TripPlanConverter.toTripPlanEntity(request, user);
+        tripPlan = tripPlanRepository.save(tripPlan);
+
+        TripPlan finalTripPlan = tripPlan;
+
+        // 3. Highlights 저장 (Converter 사용)
+        java.util.List<TripHighlight> highlights = TripPlanConverter.toTripHighlightEntities(
+                request.getHighlights(),
+                finalTripPlan
+        );
+        tripHighlightRepository.saveAll(highlights);
+
+        // 4. Transportations 저장 (Converter 사용)
+        TripTransportation outbound = TripPlanConverter.toTripTransportationEntity(
+                request.getOutboundTransportation(),
+                finalTripPlan
+        );
+        if (outbound != null) {
+            tripTransportationRepository.save(outbound);
+        }
+
+        TripTransportation returnTransport = TripPlanConverter.toTripTransportationEntity(
+                request.getReturnTransportation(),
+                finalTripPlan
+        );
+        if (returnTransport != null) {
+            tripTransportationRepository.save(returnTransport);
+        }
+
+        // 5. Accommodations 저장 (Converter 사용)
+        java.util.List<TripAccommodation> accommodations = TripPlanConverter.toTripAccommodationEntities(
+                request.getAccommodations(),
+                finalTripPlan
+        );
+        tripAccommodationRepository.saveAll(accommodations);
+
+        // 6. DailySchedules 저장 (Converter 사용)
+        if (request.getDailySchedules() != null) {
+            for (com.example.triptalk.domain.tripPlan.dto.TripPlanRequest.DailyScheduleDTO dailyScheduleDTO : request.getDailySchedules()) {
+                DailySchedule dailySchedule = TripPlanConverter.toDailyScheduleEntity(
+                        dailyScheduleDTO,
+                        finalTripPlan
+                );
+                dailyScheduleRepository.save(dailySchedule);
+            }
+        }
+
+        // 7. 저장된 데이터 조회 및 반환
+        return getTripPlan(finalTripPlan.getId(), userId);
+    }
 }