[feat] 랭킹 생성하는 기능 추가

src/main/java/com/mookive/mookive_backend/ranking/applicaiton/dto/request/RankingRequest.java

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+package com.mookive.mookive_backend.ranking.applicaiton.dto.request;
+
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+public class RankingRequest {
+
+    @Getter
+    @NoArgsConstructor
+    public static class RankingCreateRequest {
+
+        private Long userId;
+        private Long movieId;
+        private int rankingNumber;
+
+        @Builder
+        public RankingCreateRequest(Long userId, Long movieId, int rankingNumber) {
+            this.userId = userId;
+            this.movieId = movieId;
+            this.rankingNumber = rankingNumber;
+        }
+    }
+}

src/main/java/com/mookive/mookive_backend/ranking/applicaiton/mapper/RankingMapper.java

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+package com.mookive.mookive_backend.ranking.applicaiton.mapper;
+
+import com.mookive.mookive_backend.movie.domain.entity.Movie;
+import com.mookive.mookive_backend.ranking.domain.entity.Ranking;
+import com.mookive.mookive_backend.user.domain.entity.User;
+
+public class RankingMapper {
+
+    public static Ranking mapToRanking(Movie movie, User user, int rankingNumber) {
+        return Ranking.builder()
+                .movie(movie)
+                .user(user)
+                .rankingNumber(rankingNumber)
+                .build();
+    }
+}

src/main/java/com/mookive/mookive_backend/ranking/applicaiton/service/RankingCreateService.java

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+package com.mookive.mookive_backend.ranking.applicaiton.service;
+
+import com.mookive.mookive_backend.movie.domain.entity.Movie;
+import com.mookive.mookive_backend.movie.domain.service.MovieQueryService;
+import com.mookive.mookive_backend.ranking.applicaiton.dto.request.RankingRequest;
+import com.mookive.mookive_backend.ranking.applicaiton.mapper.RankingMapper;
+import com.mookive.mookive_backend.ranking.domain.entity.Ranking;
+import com.mookive.mookive_backend.ranking.domain.service.RankingSaveService;
+import com.mookive.mookive_backend.user.domain.entity.User;
+import com.mookive.mookive_backend.user.domain.service.UserQueryService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+@RequiredArgsConstructor
+public class RankingCreateService {
+
+    private final RankingSaveService rankSaveService;
+    private final MovieQueryService movieQueryService;
+    private final UserQueryService userQueryService;
+
+    public void createRank(List<RankingRequest.RankingCreateRequest> rankCreateRequestList) {
+
+        for(RankingRequest.RankingCreateRequest rankingCreateRequest : rankCreateRequestList) {
+            Long movieId = rankingCreateRequest.getMovieId();
+            Movie movie = movieQueryService.findById(movieId);
+            Long userId = rankingCreateRequest.getUserId();
+            User user = userQueryService.findById(userId);
+            int rankingNumber = rankingCreateRequest.getRankingNumber();
+            Ranking ranking = RankingMapper.mapToRanking(movie, user, rankingNumber);
+            rankSaveService.saveRanking(ranking);
+        }
+    }
+}

src/main/java/com/mookive/mookive_backend/ranking/domain/entity/Ranking.java

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+package com.mookive.mookive_backend.ranking.domain.entity;
+
+import com.mookive.mookive_backend.movie.domain.entity.Movie;
+import com.mookive.mookive_backend.user.domain.entity.User;
+import jakarta.persistence.*;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Ranking {
+
+    @Id @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne
+    @JoinColumn(name = "movie_id")
+    private Movie movie;
+
+    @ManyToOne
+    @JoinColumn(name = "user_id")
+    private User user;
+
+    private int rankingNumber;
+
+    @Builder
+    public Ranking(Movie movie, User user, int rankingNumber) {
+        this.movie = movie;
+        this.user = user;
+        this.rankingNumber = rankingNumber;
+    }
+}

src/main/java/com/mookive/mookive_backend/ranking/domain/respository/RankingRepository.java

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+package com.mookive.mookive_backend.ranking.domain.respository;
+
+import com.mookive.mookive_backend.ranking.domain.entity.Ranking;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface RankingRepository extends JpaRepository<Ranking, Long> {
+}

src/main/java/com/mookive/mookive_backend/ranking/domain/service/RankingSaveService.java

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+package com.mookive.mookive_backend.ranking.domain.service;
+
+import com.mookive.mookive_backend.ranking.domain.entity.Ranking;
+import com.mookive.mookive_backend.ranking.domain.respository.RankingRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class RankingSaveService {
+
+    private final RankingRepository rankingRepository;
+
+    public void saveRanking(Ranking ranking) {
+        rankingRepository.save(ranking);
+    }
+}

src/main/java/com/mookive/mookive_backend/ranking/presentation/RankingController.java

@@ -0,0 +1,22 @@
+package com.mookive.mookive_backend.ranking.presentation;
+
+import com.mookive.mookive_backend.ranking.applicaiton.dto.request.RankingRequest;
+import com.mookive.mookive_backend.ranking.applicaiton.service.RankingCreateService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@RestController
+@RequiredArgsConstructor
+public class RankingController {
+
+    private final RankingCreateService rankingCreateService;
+
+    @PostMapping("/ranking")
+    public void createRank(@RequestBody List<RankingRequest.RankingCreateRequest> rankingCreateRequestList) {
+        rankingCreateService.createRank(rankingCreateRequestList);
+    }
+}