Fox files not showing thumbnails in all documents section

backend/handlers/onlyoffice.go

@@ -362,12 +362,30 @@ func (h *OnlyOfficeHandler) ListOfficeFiles(c *fiber.Ctx) error {
 		if strings.HasSuffix(strings.ToLower(info.Name()), ext) {
 			relPath, _ := filepath.Rel(h.Config.StorageDir, path)
 			relPathSlash := filepath.ToSlash(relPath)
+            
+			chk := checksums[relPathSlash]
+			if chk == "" {
+				// Fallback: the path in the database might have a different prefix format 
+				// (e.g. "/test.docx", "./test.docx") or different casing.
+				cleanRel := filepath.ToSlash(filepath.Clean(relPathSlash))
+				cleanRel = strings.TrimPrefix(cleanRel, "/")
+				
+				for k, v := range checksums {
+					cleanK := filepath.ToSlash(filepath.Clean(k))
+					cleanK = strings.TrimPrefix(cleanK, "/")
+					if strings.EqualFold(cleanK, cleanRel) {
+						chk = v
+						break
+					}
+				}
+			}
+            
 			results = append(results, OfficeFile{
 				Name:     info.Name(),
 				Path:     relPathSlash,
 				Size:     info.Size(),
 				ModTime:  info.ModTime().UTC().Format("2006-01-02T15:04:05Z"),
-				Checksum: checksums[relPathSlash],
+				Checksum: chk,
 			})
 		}
 		return nil

backend/scratch.go

@@ -0,0 +1,25 @@
+package main
+
+import (
+	"fmt"
+	"path/filepath"
+	"strings"
+)
+
+func main() {
+	storageDir := `C:\Users\Elijah\Desktop\Drive\data`
+	path1 := `C:\Users\Elijah\Desktop\Drive\data\test.docx`
+	path2 := `C:\Users\Elijah\Desktop\Drive\data\folder\test.docx`
+
+	relPath1, _ := filepath.Rel(storageDir, path1)
+	relPathSlash1 := filepath.ToSlash(relPath1)
+
+	relPath2, _ := filepath.Rel(storageDir, path2)
+	relPathSlash2 := filepath.ToSlash(relPath2)
+
+	fmt.Printf("Root file: %q -> %q\n", relPath1, relPathSlash1)
+	fmt.Printf("Sub file:  %q -> %q\n", relPath2, relPathSlash2)
+
+	fmt.Printf("Clean . : %q\n", filepath.Clean("."))
+	fmt.Printf("Join . and file: %q\n", filepath.Join(".", "test.docx"))
+}