Add Interval to UpdateConfig, and method for set it

bot.go

@@ -9,6 +9,7 @@ import (
 	"fmt"
 	"io"
 	"io/ioutil"
+	_ "log"
 	"net/http"
 	"net/url"
 	"os"
@@ -492,26 +493,26 @@ func (bot *BotAPI) GetUpdatesChan(config UpdateConfig) (UpdatesChannel, error) {
 	ch := make(chan Update, bot.Buffer)
 
 	go func() {
+		ticker := time.NewTicker(config.Interval)
 		for {
 			select {
 			case <-bot.shutdownChannel:
 				return
-			default:
-			}
-
-			updates, err := bot.GetUpdates(config)
-			if err != nil {
-				log.Println(err)
-				log.Println("Failed to get updates, retrying in 3 seconds...")
-				time.Sleep(time.Second * 3)
-
-				continue
-			}
+			case <-ticker.C:
+				updates, err := bot.GetUpdates(config)
+				if err != nil {
+					log.Println(err)
+					log.Println("Failed to get updates, retrying in 3 seconds...")
+					time.Sleep(time.Second * 3)
+
+					continue
+				}
 
-			for _, update := range updates {
-				if update.UpdateID >= config.Offset {
-					config.Offset = update.UpdateID + 1
-					ch <- update
+				for _, update := range updates {
+					if update.UpdateID >= config.Offset {
+						config.Offset = update.UpdateID + 1
+						ch <- update
+					}
 				}
 			}
 		}

configs.go

@@ -5,6 +5,7 @@ import (
 	"io"
 	"net/url"
 	"strconv"
+	"time"
 )
 
 // Telegram constants
@@ -952,9 +953,16 @@ type FileConfig struct {
 
 // UpdateConfig contains information about a GetUpdates request.
 type UpdateConfig struct {
-	Offset  int
-	Limit   int
-	Timeout int
+	Offset   int
+	Limit    int
+	Timeout  int
+	Interval time.Duration
+}
+
+const UpdateDefaultInterval = time.Second
+
+func (uc *UpdateConfig) SetInterval(t time.Duration) {
+	uc.Interval = t
 }
 
 // WebhookConfig contains information about a SetWebhook request.

helpers.go

@@ -1,6 +1,7 @@
 package got
 
 import (
+	_ "log"
 	"net/url"
 )
 
@@ -382,9 +383,10 @@ func NewUserProfilePhotos(userID int) UserProfilePhotosConfig {
 // You likely want to set this to the last Update ID plus 1.
 func NewUpdate(offset int) UpdateConfig {
 	return UpdateConfig{
-		Offset:  offset,
-		Limit:   0,
-		Timeout: 0,
+		Offset:   offset,
+		Limit:    0,
+		Timeout:  0,
+		Interval: UpdateDefaultInterval,
 	}
 }