can pull states from email and fill config file

config/config.go

@@ -13,6 +13,7 @@ type Config struct {
 	Interval Duration
 	States   []State
 	Storage  []string
+	Client   string
 	Once     bool
 	Brokers  struct {
 		NTG struct {
@@ -57,7 +58,7 @@ func Get() *Config {
 }
 
 func Set(other Config) {
-	b, err := json.Marshal(other)
+	b, err := json.MarshalIndent(other, "", "   ")
 	if err != nil {
 		return
 	}

config/duration.go

@@ -11,6 +11,10 @@ func (d Duration) Get() time.Duration {
 	return time.Duration(d)
 }
 
+func (d *Duration) MarshalJSON() ([]byte, error) {
+	return json.Marshal(d.Get().String())
+}
+
 func (d *Duration) UnmarshalJSON(b []byte) error {
 	var s string
 	if err := json.Unmarshal(b, &s); err != nil {