feat: 캐스트 스크립트 검색 API 추가

- GET /cast/{id}/script로 해당 캐스트 스크립트 가져옴
- 캐스트 재생은 GET /cast/{id}에서 GET /cast/{id}/audio로 변경 (일관성)
- 이에 따른 SentenceService, SentenceRepository 등 변경

src/main/java/com/umc/owncast/domain/cast/controller/CastController.java

@@ -89,14 +89,19 @@ public ApiResponse<Object> saveCast(@PathVariable("castId") Long castId,
     }
 
     /* Cast 재생 API */
-    @GetMapping("/{castId}")
+    @GetMapping("/{castId}/audio")
     @Operation(summary = "캐스트 재생 API")
     public ResponseEntity<UrlResource> streamCast(@PathVariable("castId") Long castId,
                                                   @RequestHeader HttpHeaders headers){
         return castService.streamCast(castId, headers);
     }
 
     /* Cast 스크립트 가져오는 API */
+    @GetMapping("/{castId}/scripts")
+    @Operation(summary = "캐스트 스크립트 가져오기 API")
+    public ApiResponse<Object> findCastScripts(@PathVariable("castId") Long castId){
+        return castService.getSentenceList(castId);
+    }
 
     /* Cast 수정 API */
 

src/main/java/com/umc/owncast/domain/cast/service/CastService.java

@@ -21,7 +21,6 @@
 import org.springframework.stereotype.Service;
 
 import java.io.IOException;
-import java.util.ArrayList;
 import java.util.List;
 import java.util.NoSuchElementException;
 
@@ -33,7 +32,7 @@ public class CastService {
     private final TTSService ttsService;
     private final StreamService streamService;
     private final FileService fileService;
-    private final SentenceService sentenceService; // 가칭
+    private final SentenceService sentenceService;
 
     private final CastRepository castRepository;
     private final SentenceRepository sentenceRepository;
@@ -48,6 +47,7 @@ public class CastService {
     public ApiResponse<Object> createCast(KeywordCastCreationDTO castRequest){
         String script = scriptService.createScript(castRequest);
         TTSResultDTO ttsResult = ttsService.createSpeech(script, castRequest);
+        // TODO 아랫부분 리팩토링 (다른 createCast()와 중복됨)
         Cast cast = Cast.builder()
                 .voice(castRequest.getVoice())
                 .audioLength(castRequest.getAudioTime()) // TODO mp3 파일 길이 가져오기
@@ -68,7 +68,7 @@ public ApiResponse<Object> createCast(KeywordCastCreationDTO castRequest){
         castRepository.save(cast);
         sentenceRepository.saveAll(sentences);
 
-        SimpleCastResponseDTO response = new SimpleCastResponseDTO(cast);
+        CastScriptDTO response = new CastScriptDTO(cast);
         return ApiResponse.of(SuccessCode._OK, response);
     }
 
@@ -103,7 +103,7 @@ public ApiResponse<Object> createCast(ScriptCastCreationDTO castRequest){
         castRepository.save(cast);
         sentenceRepository.saveAll(sentences);
 
-        SimpleCastResponseDTO response = new SimpleCastResponseDTO(cast);
+        CastScriptDTO response = new CastScriptDTO(cast);
         return ApiResponse.of(SuccessCode._OK, response);
     }
 
@@ -128,17 +128,14 @@ public ApiResponse<Object> saveCast(Long castId, CastSaveDTO saveRequest){
     }
 
     public ApiResponse<Object> updateCast(Long castId, CastUpdateDTO updateRequest) {
-        Cast target = castRepository.findById(castId).orElseThrow(() -> new NoSuchElementException("캐스트가 존재하지 않습니다"));
-        // TODO 이미지
-        // - 원래 이미지 삭제
-        // - 현재 이미지명 난수화 -> 필요?
-        // - 현재 이미지 저장 O
+        Cast cast = castRepository.findById(castId).orElseThrow(() -> new NoSuchElementException("캐스트가 존재하지 않습니다"));
         String imagePath = fileService.uploadFile(updateRequest.getCastImage());
+        // TODO 원래 이미지 삭제 (FileService.removeFile()?)
         updateRequest.setImagePath(imagePath);
-        target.update(updateRequest);
-        castRepository.save(target);
+        cast.update(updateRequest);
+        castRepository.save(cast);
 
-        return ApiResponse.of(SuccessCode._OK, target);
+        return ApiResponse.of(SuccessCode._OK, cast);
     }
 
     public ResponseEntity<UrlResource> streamCast(Long castId, HttpHeaders headers) {
@@ -152,4 +149,12 @@ public ResponseEntity<UrlResource> streamCast(Long castId, HttpHeaders headers)
             throw new RuntimeException("캐스트 스트리밍에 실패하였습니다.");
         }
     }
+
+    public ApiResponse<Object> getSentenceList(Long castId) {
+        List<Sentence> sentences = sentenceService.findCastSentence(castId);
+        List<SentenceResponseDTO> response = sentences.stream()
+                .map(SentenceResponseDTO::new)
+                .toList();
+        return ApiResponse.of(SuccessCode._OK, response);
+    }
 }

src/main/java/com/umc/owncast/domain/sentence/repository/SentenceRepository.java

@@ -3,5 +3,8 @@
 import com.umc.owncast.domain.sentence.entity.Sentence;
 import org.springframework.data.jpa.repository.JpaRepository;
 
+import java.util.List;
+
 public interface SentenceRepository extends JpaRepository<Sentence,Long> {
+    List<Sentence> findAllByCastIdOrderByTimePointAsc(Long castId);
 }

src/main/java/com/umc/owncast/domain/sentence/service/SentenceService.java

@@ -13,4 +13,6 @@ public interface SentenceService {
 
     /** 매개변수를 묶어 List<Sentence>로 반환 */
     public List<Sentence> mapToSentence(String original, String korean, TTSResultDTO ttsResultDTO, Cast cast);
+
+    public List<Sentence> findCastSentence(Long castId);
 }

src/main/java/com/umc/owncast/domain/sentence/service/SentenceServiceImpl.java

@@ -53,4 +53,9 @@ public List<Sentence> mapToSentence(String original, String korean, TTSResultDTO
         }
         return sentences;
     }
+
+    @Override
+    public List<Sentence> findCastSentence(Long castId) {
+        return sentenceRepository.findAllByCastIdOrderByTimePointAsc(castId);
+    }
 }