[BE-FEAT] 사용자 캘린더 정보 조회 기능 구현

backend/src/main/java/endolphin/backend/domain/calendar/CalendarController.java

@@ -1,10 +1,13 @@
 package endolphin.backend.domain.calendar;
 
+import endolphin.backend.domain.calendar.dto.CalendarResponse;
+import endolphin.backend.global.dto.ListResponse;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.servlet.http.HttpServletResponse;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
@@ -43,4 +46,10 @@ public void subscribeGoogleCalendar(@RequestParam(value = "code", required = fal
 
         response.sendRedirect(redirectUrl);
     }
+
+    @GetMapping("/calendar/list")
+    public ResponseEntity<ListResponse<CalendarResponse>> calendarList() {
+        ListResponse<CalendarResponse> response = calendarService.getCalendarList();
+        return ResponseEntity.ok(response);
+    }
 }

backend/src/main/java/endolphin/backend/domain/calendar/CalendarRepository.java

@@ -21,4 +21,6 @@ public interface CalendarRepository extends JpaRepository<Calendar, Long> {
         + "FROM Calendar c "
         + "WHERE c.user.id IN :userIds")
     List<Object[]> findCalendarIdsByUserIds(@Param("userIds") List<Long> userIds);
+
+    List<Calendar> findAllByUserId(Long userId);
 }

backend/src/main/java/endolphin/backend/domain/calendar/CalendarService.java

@@ -1,9 +1,11 @@
 package endolphin.backend.domain.calendar;
 
+import endolphin.backend.domain.calendar.dto.CalendarResponse;
 import endolphin.backend.domain.calendar.entity.Calendar;
 import endolphin.backend.domain.calendar.event.GoogleCalendarLinkEvent;
 import endolphin.backend.domain.user.UserService;
 import endolphin.backend.domain.user.entity.User;
+import endolphin.backend.global.dto.ListResponse;
 import endolphin.backend.global.error.exception.CalendarException;
 import endolphin.backend.global.error.exception.ErrorCode;
 import endolphin.backend.global.google.GoogleOAuthService;
@@ -12,6 +14,7 @@
 import java.time.ZoneId;
 import java.time.ZonedDateTime;
 import java.time.format.DateTimeFormatter;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
@@ -37,10 +40,10 @@ public class CalendarService {
 
     public Calendar attachGoogleCalendar(GoogleCalendarDto googleCalendarDto, User user) {
         Calendar calendar = Calendar.builder()
-                .user(user)
-                .calendarId(googleCalendarDto.id())
-                .name(googleCalendarDto.summary())
-                .description(googleCalendarDto.description()).build();
+            .user(user)
+            .calendarId(googleCalendarDto.id())
+            .name(googleCalendarDto.summary())
+            .description(googleCalendarDto.description()).build();
         return calendarRepository.save(calendar);
     }
 
@@ -119,4 +122,14 @@ public void linkGoogleCalender(String code) {
 
         eventPublisher.publishEvent(new GoogleCalendarLinkEvent(user));
     }
+
+    public ListResponse<CalendarResponse> getCalendarList() {
+        User user = userService.getCurrentUser();
+
+        List<Calendar> calendars = calendarRepository.findAllByUserId(user.getId());
+
+        List<CalendarResponse> response = calendars.stream()
+            .map(c -> new CalendarResponse(c.getName())).toList();
+        return new ListResponse<>(response);
+    }
 }

backend/src/main/java/endolphin/backend/domain/calendar/dto/CalendarResponse.java

@@ -0,0 +1,7 @@
+package endolphin.backend.domain.calendar.dto;
+
+public record CalendarResponse(
+    String name
+) {
+
+}