From 803a174ace115df26b28b4b83c5320df4d71cefd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Rudowicz?= <michal.rudowicz@fl9.eu>
Date: Fri, 3 Jan 2025 21:47:07 +0100
Subject: [PATCH] Omit telegram if no bot api key is provided

---
 README.md         |  4 ----
 main.go           | 14 ++++++++++----
 telegram_utils.go |  6 ++++++
 3 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/README.md b/README.md
index 41a6c1b..5cd7b69 100644
--- a/README.md
+++ b/README.md
@@ -150,7 +150,3 @@ MemoryMax=50M
 WantedBy=multi-user.target
 
 ```
-
-## Debugging
-
-Set the `OMIT_TG` environment variable to, well, omit sending anything over to Telegram and just see the logs instead.
diff --git a/main.go b/main.go
index bd32655..9c7a4be 100644
--- a/main.go
+++ b/main.go
@@ -61,11 +61,17 @@ func main() {
 	s := makeSatel(config.SatelAddr, config.PoolInterval.GetDuration())
 	logger.Printf("Connected to Satel: %s", config.SatelAddr)
 
-	bot, err := tgbotapi.NewBotAPI(config.TelegramApiKey)
-	if err != nil {
-		panic(err)
+	var bot TelegramBotSender = nil
+	if len(config.TelegramApiKey) != 0 {
+		b, err := tgbotapi.NewBotAPI(config.TelegramApiKey)
+		if err != nil {
+			panic(err)
+		}
+		logger.Print("Created Telegram Bot API client")
+		bot = b
+	} else {
+		bot = EmptySender{}
 	}
-	logger.Print("Created Telegram Bot API client")
 
 	tgSender := TgSender{bot, s, log.New(os.Stderr, "TgFormatter", log.Lmicroseconds), config.ChatIds}
 
diff --git a/telegram_utils.go b/telegram_utils.go
index 0b48efe..32832e7 100644
--- a/telegram_utils.go
+++ b/telegram_utils.go
@@ -11,6 +11,12 @@ type TelegramBotSender interface {
 	Send(c tgbotapi.Chattable) (tgbotapi.Message, error)
 }
 
+type EmptySender struct{}
+
+func (self EmptySender) Send(_ tgbotapi.Chattable) (tgbotapi.Message, error) {
+	return tgbotapi.Message{}, nil
+}
+
 type TgSender struct {
 	bot     TelegramBotSender
 	s       SatelNameGetter