Encode auto notify into the user data

commands/subscribe.go

@@ -24,6 +24,7 @@ type userSubscription struct {
 	AutoNotify bool
 }
 
+// subscriptions are stored in format ChatID(int64),AutoNotify(bool):ChatID,AutoNotify
 func getUserSubscribedChats(username string) []userSubscription {
 
 	serializedSubscriptions, exists := shared.Users.Get(username, "subscribed_chats")
@@ -32,13 +33,37 @@ func getUserSubscribedChats(username string) []userSubscription {
 	}
 
 	subscriptions := []userSubscription{}
-	for _, chatID := range strings.Split(serializedSubscriptions, ":") {
-		if id, err := strconv.ParseInt(chatID, 10, 64); err == nil {
+	for _, sub := range strings.Split(serializedSubscriptions, ":") {
+		splitedSub := strings.Split(sub, ",")
+
+		// malformated
+		if len(splitedSub) == 0 {
+			continue
+		}
+
+		chatID, err := strconv.ParseInt(splitedSub[0], 10, 64)
+		if err != nil {
+			continue
+		}
+
+		// only ChatID
+		if len(splitedSub) == 1 {
 			subscriptions = append(subscriptions, userSubscription{
-				ChatID:     id,
+				ChatID:     chatID,
 				AutoNotify: true,
 			})
+			continue
 		}
+
+		autoNotify, err := strconv.ParseBool(splitedSub[1])
+		if err != nil {
+			autoNotify = true
+		}
+
+		subscriptions = append(subscriptions, userSubscription{
+			ChatID:     chatID,
+			AutoNotify: autoNotify,
+		})
 	}
 
 	return subscriptions
@@ -48,7 +73,13 @@ func setUserSubscribedChats(username string, subscriptions []userSubscription) {
 
 	subs := make([]string, len(subscriptions))
 	for i, sub := range subscriptions {
-		subs[i] = strconv.FormatInt(sub.ChatID, 10)
+		subs[i] = strings.Join(
+			[]string{
+				strconv.FormatInt(sub.ChatID, 10),
+				strconv.FormatBool(sub.AutoNotify),
+			},
+			",",
+		)
 	}
 
 	shared.Users.Set(username, "subscribed_chats", strings.Join(subs, ":"))