Merge pull request #6 from PLADI-ALM/feat/PDS-57-download-material

[PDS-57] 아카이빙 자료 다운로드 API 기능구현

src/main/java/com/example/PLADIALMArchiving/archiving/controller/ArchivingController.java

@@ -69,7 +69,14 @@ public ResponseCustom<?> deleteMaterial(
     archivingService.deleteMaterial(materialId, user);
     return ResponseCustom.OK();
   }
+
   /**
    * 자료를 다운로드한다.
    */
+  @GetMapping("/materials/{materialsId}")
+  public ResponseCustom<?> downloadMaterial(
+          @PathVariable Long materialsId
+  ) {
+    return ResponseCustom.OK(archivingService.downloadMaterial(materialsId));
+  }
 }

src/main/java/com/example/PLADIALMArchiving/archiving/dto/response/DownloadMaterialRes.java

@@ -0,0 +1,23 @@
+package com.example.PLADIALMArchiving.archiving.dto.response;
+
+import com.example.PLADIALMArchiving.global.utils.AwsS3FileUrlUtil;
+import lombok.Builder;
+import lombok.Data;
+import lombok.RequiredArgsConstructor;
+
+@Data
+@RequiredArgsConstructor
+public class DownloadMaterialRes {
+  private String awsS3FileUrl;
+
+  @Builder
+  public DownloadMaterialRes(String awsS3FileUrl) {
+    this.awsS3FileUrl = awsS3FileUrl;
+  }
+
+  public static DownloadMaterialRes toDto(String fileKey) {
+    return DownloadMaterialRes.builder()
+            .awsS3FileUrl(AwsS3FileUrlUtil.toUrl(fileKey))
+            .build();
+  }
+}

src/main/java/com/example/PLADIALMArchiving/archiving/service/ArchivingService.java

@@ -3,6 +3,7 @@
 import com.example.PLADIALMArchiving.archiving.dto.request.RegisterProjectReq;
 import com.example.PLADIALMArchiving.archiving.dto.request.SearchMaterialReq;
 import com.example.PLADIALMArchiving.archiving.dto.request.UploadMaterialReq;
+import com.example.PLADIALMArchiving.archiving.dto.response.DownloadMaterialRes;
 import com.example.PLADIALMArchiving.archiving.dto.response.SearchMaterialRes;
 import com.example.PLADIALMArchiving.archiving.entity.Category;
 import com.example.PLADIALMArchiving.archiving.entity.Material;
@@ -79,4 +80,9 @@ public Page<SearchMaterialRes> searchMaterial(Long projectId, SearchMaterialReq
 
     return filteredMaterials.map(SearchMaterialRes::toDto);
   }
+
+  public DownloadMaterialRes downloadMaterial(Long materialsId) {
+    Material material = materialRepository.findById(materialsId).orElseThrow(() -> new BaseException(BaseResponseCode.MATERIAL_NOT_FOUND));
+    return DownloadMaterialRes.toDto(material.getFileKey());
+  }
 }

src/main/java/com/example/PLADIALMArchiving/global/utils/AwsS3ImageUrlUtil.java → src/main/java/com/example/PLADIALMArchiving/global/utils/AwsS3FileUrlUtil.java

@@ -6,7 +6,7 @@
 
 @RequiredArgsConstructor
 @Component
-public class AwsS3ImageUrlUtil {
+public class AwsS3FileUrlUtil {
 
   public static String bucket;
   public static String region;
@@ -21,7 +21,7 @@ public void setBucket(String value) {
     bucket = value;
   }
 
-  public static String toUrl(String imageKey) {
-    return "https://"+bucket+".s3."+region+".amazonaws.com/"+imageKey;
+  public static String toUrl(String fileKey) {
+    return "https://"+bucket+".s3."+region+".amazonaws.com/"+fileKey;
   }
 }