chat: add voice schedule support

bot.go

@@ -374,6 +374,19 @@ func (b *Bot) ProcessUpdate(upd Update) {
 
 			return
 		}
+
+		if m.VoiceChatSchedule != nil {
+			if handler, ok := b.handlers[OnVoiceChatScheduled]; ok {
+				handler, ok := handler.(func(*Message))
+				if !ok {
+					panic("telebot: voice chat scheduled is bad")
+				}
+
+				b.runHandler(func() { handler(m) })
+			}
+
+			return
+		}
 	}
 
 	if upd.EditedMessage != nil {

message.go

@@ -221,6 +221,8 @@ type Message struct {
 	// Inline keyboard attached to the message.
 	ReplyMarkup InlineKeyboardMarkup `json:"reply_markup"`
 
+	VoiceChatSchedule *VoiceChatSchedule `json:"voice_chat_scheduled,omitempty"`
+
 	// For a service message, a voice chat started in the chat.
 	VoiceChatStarted *VoiceChatStarted `json:"voice_chat_started,omitempty"`
 

sendable.go

@@ -317,6 +317,7 @@ func (i *Invoice) Send(b *Bot, to Recipient, opt *SendOptions) (*Message, error)
 		"payload":                       i.Payload,
 		"provider_token":                i.Token,
 		"currency":                      i.Currency,
+		"max_tip_amount":                strconv.Itoa(i.MaxTipAmount),
 		"need_name":                     strconv.FormatBool(i.NeedName),
 		"need_phone_number":             strconv.FormatBool(i.NeedPhoneNumber),
 		"need_email":                    strconv.FormatBool(i.NeedEmail),
@@ -343,6 +344,9 @@ func (i *Invoice) Send(b *Bot, to Recipient, opt *SendOptions) (*Message, error)
 		data, _ := json.Marshal(i.Prices)
 		params["prices"] = string(data)
 	}
+	if len(i.SuggestedTipAmounts) > 0 {
+		params["suggested_tip_amounts"] = sliceIntToString(i.SuggestedTipAmounts)
+	}
 	b.embedSendOptions(params, opt)
 
 	data, err := b.Raw("sendInvoice", params)

telebot.go

@@ -154,6 +154,11 @@ const (
 	//
 	// Handler: func(*Message)
 	OnAutoDeleteTimer = "\amessage_auto_delete_timer_changed"
+
+	// Will fire on OnVoiceChatScheduled
+	//
+	// Handler: func(*Message)
+	OnVoiceChatScheduled = "\avoice_chat_scheduled"
 )
 
 // ChatAction is a client-side status indicating bot activity.

util.go

@@ -251,3 +251,11 @@ func isUserInList(user *User, list []User) bool {
 	}
 	return false
 }
+
+func sliceIntToString(ns []int) (s string) {
+	for _, n := range ns {
+		s += strconv.Itoa(n) + ","
+	}
+	s = s[:len(s)-1]
+	return
+}

voicechat.go

@@ -1,5 +1,7 @@
 package telebot
 
+import "time"
+
 // VoiceChatStarted represents a service message about a voice chat
 // started in the chat.
 type VoiceChatStarted struct{}
@@ -15,3 +17,13 @@ type VoiceChatEnded struct {
 type VoiceChatPartecipantsInvited struct {
 	Users []User `json:"users"`
 }
+
+// VoiceChatSchedule represents a service message about a voice chat scheduled in the chat.
+type VoiceChatSchedule struct {
+	StartUnixTime int64 `json:"start_date"`
+}
+
+// ExpireDate returns the point when the voice chat is supposed to be started by a chat administrator.
+func (v *VoiceChatSchedule) ExpireDate() time.Time {
+	return time.Unix(v.StartUnixTime, 0)
+}