[KC-116] shp 파일 생성 기능 수정

src/main/java/com/kamco/cd/kamcoback/inference/InferenceResultApiController.java

@@ -1,5 +1,6 @@
 package com.kamco.cd.kamcoback.inference;
 
+import com.kamco.cd.kamcoback.common.exception.CustomApiException;
 import com.kamco.cd.kamcoback.config.api.ApiResponseDto;
 import com.kamco.cd.kamcoback.inference.dto.InferenceDetailDto;
 import com.kamco.cd.kamcoback.inference.dto.InferenceResultDto;
@@ -20,11 +21,19 @@ import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.responses.ApiResponses;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.validation.Valid;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Path;
 import java.time.LocalDate;
 import java.util.List;
 import java.util.UUID;
 import lombok.RequiredArgsConstructor;
+import org.springframework.core.io.FileSystemResource;
+import org.springframework.core.io.Resource;
 import org.springframework.data.domain.Page;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
@@ -33,6 +42,7 @@ import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.util.UriUtils;
 
 @Tag(name = "추론관리", description = "추론관리 API")
 @RequestMapping("/api/inference")
@@ -388,4 +398,47 @@ public class InferenceResultApiController {
         inferenceResultService.getInferenceGeomList(uuid, searchGeoReq);
     return ApiResponseDto.ok(geomList);
   }
+
+  @Operation(summary = "shp 파일 다운로드", description = "추론관리 분석결과 shp 파일 다운로드")
+  @ApiResponses(
+      value = {
+        @ApiResponse(
+            responseCode = "200",
+            description = "shp zip파일 다운로드",
+            content =
+                @Content(
+                    mediaType = "application/octet-stream",
+                    schema = @Schema(type = "string", format = "binary"))),
+        @ApiResponse(responseCode = "404", description = "파일 없음", content = @Content),
+        @ApiResponse(responseCode = "500", description = "서버 오류", content = @Content)
+      })
+  @GetMapping(value = "/download/{uuid}", produces = MediaType.APPLICATION_OCTET_STREAM_VALUE)
+  public ResponseEntity<Resource> downloadZip(@PathVariable UUID uuid) throws IOException {
+
+    String path;
+    try {
+      path = String.valueOf(inferenceResultService.shpDownloadPath(uuid));
+    } catch (CustomApiException e) {
+      // 데이터 없음 등  404
+      return ResponseEntity.status(e.getStatus()).build();
+    }
+
+    Path zipPath = Path.of(path);
+    FileSystemResource resource = new FileSystemResource(zipPath);
+
+    if (!resource.exists() || !resource.isReadable()) {
+      return ResponseEntity.notFound().build();
+    }
+
+    String filename = zipPath.getFileName().toString();
+    String encodedFilename = UriUtils.encode(filename, StandardCharsets.UTF_8);
+
+    return ResponseEntity.ok()
+        .contentType(MediaType.APPLICATION_OCTET_STREAM)
+        .header(
+            HttpHeaders.CONTENT_DISPOSITION,
+            "attachment; filename=\"" + filename + "\"; filename*=UTF-8''" + encodedFilename)
+        .contentLength(resource.contentLength())
+        .body((Resource) resource);
+  }
 }