Add shutdown and panic notifications and admin only commands

main.go

@@ -1,8 +1,11 @@
 package main
 
 import (
+	"fmt"
 	"log"
 	"os"
+	"os/signal"
+	"syscall"
 
 	"nignoggobot/commands"
 
@@ -11,7 +14,41 @@ import (
 	_ "nignoggobot/commands" // ensure init() is called
 )
 
+var (
+	devChannelID int64 = -1001327903329
+	AdminIDs           = []int64{126131628}
+)
+
+func notifyShutdown(reason string) {
+	token := os.Getenv("TELEGRAM_TOKEN")
+	bot, err := tgbotapi.NewBotAPI(token)
+	if err != nil {
+		log.Println("Failed to create bot for shutdown notification:", err)
+		return
+	}
+	msg := tgbotapi.NewMessage(devChannelID, "Bot shutting down/crashed: "+reason)
+	bot.Send(msg)
+}
+
 func main() {
+	// Signal handling for SIGINT/SIGTERM
+	sigs := make(chan os.Signal, 1)
+	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
+	go func() {
+		sig := <-sigs
+		notifyShutdown(fmt.Sprintf("Received signal: %v", sig))
+		os.Exit(0)
+	}()
+
+	defer func() {
+		if r := recover(); r != nil {
+			notifyShutdown("panic: " + fmt.Sprint(r))
+			panic(r) // re-throw after notifying
+		} else {
+			notifyShutdown("normal shutdown")
+		}
+	}()
+
 	bot, err := tgbotapi.NewBotAPI(os.Getenv("TELEGRAM_TOKEN"))
 	log.Println(os.Getenv("TELEGRAM_TOKEN"))
 	if err != nil {