use a new thread safe map

pkg/realdebrid/types.go

@@ -29,6 +29,23 @@ type Torrent struct {
 	Links    []string `json:"links"`
 }
 
+func (i *Torrent) UnmarshalJSON(data []byte) error {
+	type Alias Torrent
+	aux := &struct {
+		Progress float64 `json:"progress"`
+		*Alias
+	}{
+		Alias: (*Alias)(i),
+	}
+
+	if err := json.Unmarshal(data, &aux); err != nil {
+		return err
+	}
+
+	i.Progress = int(math.Round(aux.Progress))
+	return nil
+}
+
 type TorrentInfo struct {
 	ID            string   `json:"id"`
 	Name          string   `json:"filename"`