fix: import document file only one time

AoU-Admin/src/main/java/ch/unige/aou/controller/admin/PublicationController.java

@@ -119,15 +119,6 @@ public class PublicationController extends AouResourceController<Publication> {
 
     // try to import file if possible
     if (publication.getImportSource() != null) {
-      switch (publication.getImportSource()) {
-        case ARXIV:
-          this.arxivImportService.createDocumentFileFromArxivMetadata(publication);
-          break;
-        case DOI:
-          this.doiCrossrefImportService.createDocumentFileFromCrossrefMetadata(publication);
-          break;
-      }
-
       try {
         this.importFilesFromServices(publication);
       } catch (IOException | NoSuchAlgorithmException e) {
@@ -363,8 +354,9 @@ public class PublicationController extends AouResourceController<Publication> {
     //import from arxiv if needed
     if (publication.getImportSource().equals(Publication.ImportSource.ARXIV)) {
       this.arxivImportService.createDocumentFileFromArxivMetadata(publication);
-    } else if (publication.getImportSource().equals(Publication.ImportSource.DOI) ||
-            publication.getImportSource().equals(Publication.ImportSource.PMID)) {
+    } else if (publication.getImportSource().equals(Publication.ImportSource.DOI)) {
+      this.doiCrossrefImportService.createDocumentFileFromCrossrefMetadata(publication);
+    } else if(publication.getImportSource().equals(Publication.ImportSource.PMID)) {
       //check if there is pmcid, if so import files from (Europe)PMC
       String pmicId = ((PublicationService) this.itemService).getPmcIdFromPublicationMetadata(publication);
       if (!StringTool.isNullOrEmpty(pmicId)) {