fix #173 add custom Telegram api url

README.md

@@ -52,6 +52,8 @@ import (
 func main() {
 	b, err := tb.NewBot(tb.Settings{
 		Token:  "TOKEN_HERE",
+		// You can also set custom API URL. If field is empty it equals to "https://api.telegram.org"
+		URL: "http://195.129.111.17:8012",
 		Poller: &tb.LongPoller{Timeout: 10 * time.Second},
 	})
 

api.go

@@ -19,7 +19,7 @@ import (
 
 // Raw lets you call any method of Bot API manually.
 func (b *Bot) Raw(method string, payload interface{}) ([]byte, error) {
-	url := fmt.Sprintf("https://api.telegram.org/bot%s/%s", b.Token, method)
+	url := fmt.Sprintf("%s/bot%s/%s", b.URL, b.Token, method)
 
 	var buf bytes.Buffer
 	if err := json.NewEncoder(&buf).Encode(payload); err != nil {
@@ -118,7 +118,7 @@ func (b *Bot) sendFiles(
 		return nil, wrapSystem(err)
 	}
 
-	url := fmt.Sprintf("https://api.telegram.org/bot%s/%s", b.Token, method)
+	url := fmt.Sprintf("%s/bot%s/%s", b.URL, b.Token, method)
 	req, err := http.NewRequest("POST", url, body)
 	if err != nil {
 		return nil, wrapSystem(err)

bot.go

@@ -25,8 +25,13 @@ func NewBot(pref Settings) (*Bot, error) {
 		client = http.DefaultClient
 	}
 
+	if pref.URL == "" {
+		pref.URL = DefaultApiURL
+	}
+
 	bot := &Bot{
 		Token:   pref.Token,
+		URL:     pref.URL,
 		Updates: make(chan Update, pref.Updates),
 		Poller:  pref.Poller,
 
@@ -49,6 +54,7 @@ func NewBot(pref Settings) (*Bot, error) {
 type Bot struct {
 	Me      *User
 	Token   string
+	URL     string
 	Updates chan Update
 	Poller  Poller
 
@@ -61,6 +67,9 @@ type Bot struct {
 // Settings represents a utility struct for passing certain
 // properties of a bot around and is required to make bots.
 type Settings struct {
+	// Telegram API Url
+	URL string
+
 	// Telegram token
 	Token string
 
@@ -825,8 +834,8 @@ func (b *Bot) Download(f *File, localFilename string) error {
 		return err
 	}
 
-	url := fmt.Sprintf("https://api.telegram.org/file/bot%s/%s",
-		b.Token, g.FilePath)
+	url := fmt.Sprintf("%s/file/bot%s/%s",
+		b.URL, b.Token, g.FilePath)
 
 	out, err := os.Create(localFilename)
 	if err != nil {
@@ -1152,5 +1161,5 @@ func (b *Bot) FileURLByID(fileID string) (string, error) {
 	if err != nil {
 		return "", err
 	}
-	return "https://api.telegram.org/file/bot" + b.Token + "/" + f.FilePath, nil
+	return fmt.Sprintf("%s/file/bot%s/%s", b.URL, b.Token, f.FilePath), nil
 }

telebot.go

@@ -158,3 +158,5 @@ const (
 	FeatureMouth    MaskFeature = "mouth"
 	FeatureChin     MaskFeature = "chin"
 )
+
+const DefaultApiURL = "https://api.telegram.org"

telebot_test.go

@@ -58,3 +58,25 @@ func TestFile(t *testing.T) {
 		t.Fatal("File doesn't preserve its original filename.")
 	}
 }
+
+func TestCustomURL(t *testing.T) {
+	token := os.Getenv("TELEBOT_SECRET")
+	if token == "" {
+		fmt.Println("ERROR: " +
+			"In order to test telebot functionality, you need to set up " +
+			"TELEBOT_SECRET environmental variable, which represents an API " +
+			"key to a Telegram bot.\n")
+		t.Fatal("Could't find TELEBOT_SECRET, aborting.")
+	}
+
+	customURL := "http://api.telegram.org"
+
+	bot, err := NewBot(Settings{Token: token, URL: customURL})
+	if err != nil {
+		t.Fatal("couldn't create bot:", err)
+	}
+
+	if bot.URL != customURL {
+		t.Fatal("custom api url is not set")
+	}
+}