Optimize file chunk validation by reducing system calls

handler/file/visibility/visibility.go

@@ -7,7 +7,6 @@ import (
 	"github.com/fossyy/filekeeper/utils"
 	fileView "github.com/fossyy/filekeeper/view/client/file"
 	"net/http"
-	"os"
 	"path/filepath"
 	"strconv"
 )
@@ -34,15 +33,10 @@ func PUT(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	saveFolder := filepath.Join("uploads", userSession.UserID.String(), file.ID.String(), file.Name)
-	missingChunk := false
-	for j := 0; j < int(file.TotalChunk); j++ {
-		fileName := fmt.Sprintf("%s/chunk_%d", saveFolder, j)
+	pattern := fmt.Sprintf("%s/chunk_*", saveFolder)
+	chunkFiles, err := filepath.Glob(pattern)
 
-		if _, err := os.Stat(fileName); os.IsNotExist(err) {
-			missingChunk = true
-			break
-		}
-	}
+	missingChunk := err != nil || len(chunkFiles) != int(file.TotalChunk)
 	fileData := types.FileData{
 		ID:         file.ID.String(),
 		Name:       file.Name,