Merge pull request #42 from Kitzanos/fature/GEPAFINBE-44

GEPAFINBE-44 (Beneficiario must be able to download Call Documents)

src/main/java/net/gepafin/tendermanagement/constants/GepafinConstant.java

@@ -201,5 +201,7 @@ public class GepafinConstant {
 	public static final String DELEGATION_DELETE_SUCCESS = "delegation.delete.success";
     public static final String USER_NOT_AUTHORIZED_TO_CREATE_APPLICATION = "user.not.authorized.create.application";
     public static final String APPLICATION_SUBMITTED_CANNOT_CHANGE = "application.submitted.cannot.change";
+    public static final String CALL_DOCUMENTS_FETCH_SUCCESS_MSG = "call.documents.fetch.success";
+    public static final String CALL_DOCUMENTS_NOT_FOUND_MSG = "call.documents.not.found";
 }
 

src/main/java/net/gepafin/tendermanagement/dao/CallDao.java

@@ -1,5 +1,9 @@
 package net.gepafin.tendermanagement.dao;
 
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
 import java.math.BigDecimal;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
@@ -8,13 +12,21 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.stream.Collectors;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipOutputStream;
 
 import net.gepafin.tendermanagement.enums.DocumentSourceTypeEnum;
 import net.gepafin.tendermanagement.model.response.*;
 import net.gepafin.tendermanagement.service.*;
 import net.gepafin.tendermanagement.util.DateTimeUtil;
 import net.gepafin.tendermanagement.util.Utils;
+import org.h2.util.IOUtils;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Component;
 import org.springframework.util.StringUtils;
 
@@ -85,6 +97,10 @@ public class CallDao {
 	private FlowDao flowDao;
 	@Autowired
 	private FormDao formDao;
+	@Value("${aws.s3.url.folder}")
+	private String s3Folder;
+	@Autowired
+	private AmazonS3Service amazonS3Service;
 
 	public CallResponse createCallStep1(CreateCallRequestStep1 createCallRequest, Long userId) {
 		UserEntity userEntity = userService.validateUser(userId);
@@ -101,6 +117,35 @@ public class CallDao {
 		return createCallResponseBean;
 
 	}
+	public byte[] downloadCallDocumentsAsZip(Long callId) {
+		List<DocumentEntity> documents = documentRepository.findBySourceIdAndSourceAndTypeAndIsDeletedFalse(callId, DocumentSourceTypeEnum.CALL.getValue(),DocumentTypeEnum.DOCUMENT.getValue());
+		if (documents.isEmpty()) {
+			throw new ResourceNotFoundException(Status.NOT_FOUND, Translator.toLocale(GepafinConstant.DOCUMENT_NOT_FOUND));
+		}
+
+		try (ByteArrayOutputStream zipOutputStream = new ByteArrayOutputStream();
+			 ZipOutputStream zos = new ZipOutputStream(zipOutputStream)) {
+
+			for (DocumentEntity document : documents) {
+				try (InputStream fileInputStream = amazonS3Service.getFile(s3Folder, document.getFileName())) {
+					ZipEntry zipEntry = new ZipEntry(document.getFileName());
+					zos.putNextEntry(zipEntry);
+					IOUtils.copy(fileInputStream, zos);
+					zos.closeEntry();
+				} catch (IOException e) {
+					throw new RuntimeException("Error downloading or adding document to ZIP: " + document.getFileName(), e);
+				}
+			}
+
+			zos.finish();
+			return zipOutputStream.toByteArray();
+
+		} catch (IOException e) {
+			throw new RuntimeException("Error while creating ZIP file", e);
+		}
+	}
+
+
 
 	public CallEntity convertToCallEntity(CreateCallRequestStep1 createCallRequest) {
 		CallEntity callEntity = new CallEntity();

src/main/java/net/gepafin/tendermanagement/repositories/DocumentRepository.java

@@ -20,6 +20,7 @@ public interface DocumentRepository extends JpaRepository<DocumentEntity, Long>
 	Optional<DocumentEntity> findByIdAndSourceIdAndIsDeletedFalse(Long id, Long sourceId);
 
 	List<DocumentEntity> findBySource(String source);
+	List<DocumentEntity> findBySourceIdAndSourceAndTypeAndIsDeletedFalse(Long sourceId, String source, String type);
 
 }
 

src/main/java/net/gepafin/tendermanagement/service/CallService.java

@@ -32,5 +32,5 @@ public interface CallService {
 	CallEntity validateCall(Long callId);
 
 	 CallEntity validatePublishedCall(Long callId);
-
+	byte[] downloadCallDocumentsAsZip(Long callId);
 	}

src/main/java/net/gepafin/tendermanagement/service/impl/CallServiceImpl.java

@@ -92,4 +92,9 @@ public class CallServiceImpl implements CallService {
     public CallEntity validatePublishedCall(Long callId) {
     return   callDao.validatePublishedCall(callId);
     }
+    @Override
+    @Transactional(readOnly = true)
+    public byte[] downloadCallDocumentsAsZip(Long callId) {
+        return callDao.downloadCallDocumentsAsZip(callId);
+    }
     }

src/main/java/net/gepafin/tendermanagement/web/rest/api/CallApi.java

@@ -134,4 +134,19 @@ public interface CallApi {
     public ResponseEntity<Response<CallResponse>> updateCallStatus(HttpServletRequest request,
             @Parameter(description = "The call id", required = true) @PathVariable("callId") Long callId,
             @Parameter(description = "status", required = true)@RequestParam(value = "status", required = true) CallStatusEnum status);
+
+    @Operation(summary = "Api to download call documents as a ZIP file",
+            responses = {
+                    @ApiResponse(responseCode = "200", description = "OK"),
+                    @ApiResponse(responseCode = "404", description = "Not Found", content = @Content(mediaType = MediaType.APPLICATION_JSON_VALUE, examples = {
+                            @ExampleObject(value = ErrorConstants.NOTFOUND_ERROR_EXAMPLE)})),
+                    @ApiResponse(responseCode = "401", description = "Unauthorized", content = @Content(mediaType = MediaType.APPLICATION_JSON_VALUE, examples = {
+                            @ExampleObject(value = ErrorConstants.UNAUTHORIZED_ERROR_EXAMPLE)})),
+                    @ApiResponse(responseCode = "400", description = "Bad Request", content = @Content(mediaType = MediaType.APPLICATION_JSON_VALUE, examples = {
+                            @ExampleObject(value = ErrorConstants.BADREQUEST_ERROR_EXAMPLE)}))
+            })
+    @GetMapping(value = "/{callId}/documents/zip")
+    ResponseEntity<byte[]> downloadCallDocumentsAsZip(HttpServletRequest httpServletRequest,
+            @Parameter(description = "The call ID", required = true) @PathVariable("callId") Long callId);
+
 }

src/main/java/net/gepafin/tendermanagement/web/rest/api/impl/CallApiController.java

@@ -4,7 +4,9 @@ import java.util.List;
 
 import net.gepafin.tendermanagement.enums.CallStatusEnum;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -84,4 +86,22 @@ public class CallApiController implements CallApi {
         CallResponse updateCall = callService.updateCallStatus(request, callId, status);
         return ResponseEntity.ok(new Response<>(updateCall,  Status.SUCCESS, Translator.toLocale(GepafinConstant.UPDATE_CALL_STATUS_SUCCESS_MSG)));
     }
+    @Override
+    public ResponseEntity<byte[]> downloadCallDocumentsAsZip(HttpServletRequest request, Long callId) {
+        byte[] zipFile = callService.downloadCallDocumentsAsZip(callId);
+
+        HttpHeaders headers = new HttpHeaders();
+        headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);
+        headers.setContentDispositionFormData("attachment", "documents.zip");
+
+        if (zipFile == null || zipFile.length == 0) {
+            String notFoundMessage = Translator.toLocale(GepafinConstant.CALL_DOCUMENTS_NOT_FOUND_MSG);
+            return ResponseEntity.status(HttpStatus.NOT_FOUND)
+                    .body(notFoundMessage.getBytes());
+        }
+
+        return new ResponseEntity<>(zipFile, headers, HttpStatus.OK);
+    }
+
+
 }

src/main/resources/message_en.properties

@@ -226,5 +226,8 @@ user.company.relation.not.found=User with the specified company relation not fou
 delegation.delete.success=Delegation deleted successfully.
 user.not.authorized.create.application=User must be a legal representative or have delegation.
 application.submitted.cannot.change=The submitted application cannot be changed.
+# Call Document Messages
+call.documents.fetch.success=Documents fetched successfully.
+call.documents.not.found=No documents found for the specified call.
 
 

src/main/resources/message_it.properties

@@ -222,5 +222,8 @@ delegation.delete.success=Delega eliminata con successo.
 user.not.authorized.create.application=L'utente deve essere un rappresentante legale o avere una delega.
 application.submitted.cannot.change=La domanda inviata non può essere modificata.
 
+# Call Document Messages
+call.documents.fetch.success=Documenti recuperati con successo.
+call.documents.not.found=Nessun documento trovato per la chiamata specificata.