Bootstrap implemented

src/main/java/com/dre0059/articleprocessor/controller/FileUploadController.java

 package com.dre0059.articleprocessor.controller;
 
 import com.dre0059.articleprocessor.GrobidClient;
+import com.dre0059.articleprocessor.model.Dokument;
 import com.dre0059.articleprocessor.service.CategoryService;
 import com.dre0059.articleprocessor.service.HeaderService;
 import com.dre0059.articleprocessor.service.ReferenceService;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+
 import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
@@ -64,7 +68,7 @@ public class FileUploadController {
             String references = grobidClient.processReferences(tmpFile);
             //System.out.println("GROBID Reference processed: " + references);
 
-            headerService.processHeader(header, categoryId, tmpFile);
+            Dokument savedDocument = headerService.processHeader(header, categoryId, tmpFile);
             //System.out.println("Header saved to database.");
 
             referenceService.extractReferences(references);
@@ -72,6 +76,10 @@ public class FileUploadController {
 
             tmpFile.delete();
 
+            Map<String, Object> response = new HashMap<>();
+            response.put("id", savedDocument.getId());
+            response.put("message", "Upload successful");
+
             return ResponseEntity.ok(header);
 
 

src/main/java/com/dre0059/articleprocessor/service/HeaderService.java

@@ -54,7 +54,7 @@ public class HeaderService {
         this.categoryRepository = categoryRepository;
     }
 
-    public void processHeader(String header, String categoryId, File pdfFile) {
+    public Dokument processHeader(String header, String categoryId, File pdfFile) {
         this.title = this.parseHeaderFields(header, "title");
 
         if(!this.parseHeaderFields(header, "doi").equals("Not found")){
@@ -87,9 +87,11 @@ public class HeaderService {
         // check duplicity of the document
         if(documentRepository.existsByTitleAndAuthorsIn(title, authorLastNames)){
             System.out.println("Document with this title and authors already exist");
-            return;
+            return null;
         }
 
+        Dokument dok = new Dokument(title, year, doi, publisher, "PDF");
+
         List<Author> savedAuthors = authorRepository.saveAll(authorList);
         Dokument dokument = new Dokument(title, year, doi, publisher, "PDF");
         Category category = categoryRepository.getReferenceById(categoryId);
@@ -105,11 +107,12 @@ public class HeaderService {
           System.err.println("Nepodarilo sa ulozit obsah suboru");
         }
 
-        this.documentRepository.save(dokument); // output : Optional.empty
+        Dokument saved = this.documentRepository.save(dokument); // output : Optional.empty
 
         // set the document, which has the list of references
-        referenceService.setFromDocument(dokument);
+        referenceService.setFromDocument(saved);
 
+        return saved;
     }
 
     private String parseHeaderFields(String header, String field){