Add more things for file handling

media/fileInfo.go

@@ -0,0 +1,17 @@
+package media
+
+import (
+	"database/sql"
+
+	"git.mstar.dev/mstar/linstrom/storage-new/dbgen"
+)
+
+func (s *Server) FileExists(userid, filename string) (bool, error) {
+	mm := dbgen.MediaMetadata
+	c, err := mm.Where(mm.OwnedById.Eq(sql.NullString{Valid: true, String: userid}), mm.Name.Eq(filename)).
+		Count()
+	if err != nil {
+		return false, err
+	}
+	return c > 0, nil
+}