Some TG-specific improvements with possible other methods as well

main.go

@@ -30,12 +30,13 @@ func (self TgSender) Send(msg GenericMessage) error {
 	}
 	b := strings.Builder{}
 	for _, msg := range msg.msgs {
-		b.WriteString(msg.String())
+		b.WriteString(msg.TgString())
 		b.WriteRune('\n')
 	}
 	message := b.String()
 	for _, chatId := range *chatIds {
 		toSend := tgbotapi.NewMessage(chatId, message)
+		toSend.ParseMode = "HTML"
 		_, err := self.bot.Send(toSend)
 		if err != nil {
 			return err
@@ -44,14 +45,22 @@ func (self TgSender) Send(msg GenericMessage) error {
 	return nil
 }
 
-func sendTgMessage(tgEvents chan GenericMessage, msg string, chatId int64) {
-	tgEvents <- GenericMessage{TgChatId{chatId}, []MsgContent{{msg}}}
+func sendTgMessage(tgEvents chan GenericMessage, msg MsgContent, chatId int64) {
+	tgEvents <- GenericMessage{TgChatId{chatId}, []MsgContent{msg}}
 }
 
 type RealSleeper struct {
 	duration time.Duration
 }
 
+type SatelMsgContent struct {
+	ev satel.Event
+}
+
+func (self SatelMsgContent) TgString() string {
+	return fmt.Sprint("<b>", self.ev.Type, "</b>, <i>index</i>:<b>", self.ev.Index, "</b>, value:<b>", self.ev.Value, "</b>")
+}
+
 func (self RealSleeper) Sleep(ch chan<- interface{}) {
 	go func() {
 		time.Sleep(self.duration)
@@ -110,11 +119,17 @@ func main() {
 	logger.Print("Created Telegram Bot API client")
 
 	tgSender := TgSender{bot}
-	Consume(SendToTg(tgSenderWorker(tgEvents, &wg, sleeper, log.New(os.Stderr, "TgSender", log.Lmicroseconds)),
-		tgSender, &wg, log.New(os.Stderr, "SendToTg", log.Lmicroseconds)))
+
+	Consume(
+		SendToTg(
+			tgSenderWorker(tgEvents, &wg, sleeper, log.New(os.Stderr, "TgSender", log.Lmicroseconds)),
+			tgSender, &wg, log.New(os.Stderr, "SendToTg", log.Lmicroseconds)))
+
 	for e := range FilterByLastSeen(s.Events, "hs_wro_last_seen.bin", log.New(os.Stderr, "FilterByLastSeen", log.Lmicroseconds)) {
 		logger.Print("Received change from SATEL: ", e)
-		sendTgMessage(tgEvents, fmt.Sprint("Change from SATEL: type:", e.Type, ", index:", e.Index, ", value:", e.Value), chatIds[0])
+		for _, chatId := range chatIds {
+			sendTgMessage(tgEvents, SatelMsgContent{e}, chatId)
+		}
 	}
 
 	close(tgEvents)

sender_worker.go

@@ -32,11 +32,15 @@ func Consume(events <-chan GenericMessage) {
 	}()
 }
 
-type MsgContent struct {
+type MsgContent interface {
+	TgString() string
+}
+
+type StringMsgContent struct {
 	msg string
 }
 
-func (self MsgContent) String() string { return self.msg }
+func (self StringMsgContent) TgString() string { return self.msg }
 
 type GenericMessage struct {
 	chatIds ChatId

sender_worker_test.go

@@ -30,6 +30,14 @@ func (self *MockSleeper) Sleep(ch chan<- interface{}) {
 	self.callCount += 1
 }
 
+type FakeChatId struct {
+	FakeId int64
+}
+
+func (self FakeChatId) GetTgIds() *[]int64 {
+	return nil
+}
+
 func TestMessageThrottling(t *testing.T) {
 	testEvents := make(chan GenericMessage)
 	wg := sync.WaitGroup{}
@@ -37,18 +45,21 @@ func TestMessageThrottling(t *testing.T) {
 	mockSleeper := MockSleeper{nil, 0}
 	Consume(SendToTg(tgSenderWorker(testEvents, &wg, &mockSleeper, log.New(io.Discard, "", log.Ltime)),
 		&mockSender, &wg, log.New(io.Discard, "", log.Ltime)))
-	testEvents <- GenericMessage{TgChatId{123}, []MsgContent{{"test1"}}}
-	testEvents <- GenericMessage{TgChatId{124}, []MsgContent{{"test3"}}}
-	testEvents <- GenericMessage{TgChatId{123}, []MsgContent{{"test2"}}}
-	testEvents <- GenericMessage{TgChatId{124}, []MsgContent{{"test4"}}}
+	testEvents <- GenericMessage{TgChatId{123}, []MsgContent{StringMsgContent{"test1"}}}
+	testEvents <- GenericMessage{TgChatId{124}, []MsgContent{StringMsgContent{"test3"}}}
+	testEvents <- GenericMessage{TgChatId{123}, []MsgContent{StringMsgContent{"test2"}}}
+	testEvents <- GenericMessage{TgChatId{124}, []MsgContent{StringMsgContent{"test4"}}}
+	testEvents <- GenericMessage{FakeChatId{123}, []MsgContent{StringMsgContent{"testFake"}}}
 	assert.Equal(t, 1, mockSleeper.callCount)
 	*mockSleeper.ch <- nil
 	assert.Equal(t, 1, mockSleeper.callCount)
-	testEvents <- GenericMessage{TgChatId{123}, []MsgContent{{"test5"}}}
+	testEvents <- GenericMessage{TgChatId{123}, []MsgContent{StringMsgContent{"test5"}}}
 	close(testEvents)
 	wg.Wait()
 	assert.Equal(t, 2, mockSleeper.callCount)
 
-	assert.Len(t, mockSender.messages, 3)
-	assert.Contains(t, mockSender.messages, GenericMessage{TgChatId{123}, []MsgContent{{"test1"}, {"test2"}}})
+	assert.Len(t, mockSender.messages, 4)
+	assert.Contains(t, mockSender.messages, GenericMessage{TgChatId{123}, []MsgContent{StringMsgContent{"test1"}, StringMsgContent{"test2"}}})
+	assert.Contains(t, mockSender.messages, GenericMessage{TgChatId{124}, []MsgContent{StringMsgContent{"test3"}, StringMsgContent{"test4"}}})
+	assert.Contains(t, mockSender.messages, GenericMessage{FakeChatId{123}, []MsgContent{StringMsgContent{"testFake"}}})
 }