Clean up: remove unused packages, switch to slog, tidy Makefile

cmd/bot/main.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"log"
+	"log/slog"
 	"net/http"
 	"os"
 	"strconv"
@@ -16,6 +16,10 @@ import (
 )
 
 func main() {
+	slog.SetDefault(slog.New(slog.NewTextHandler(os.Stderr, &slog.HandlerOptions{
+		AddSource: true,
+		Level:     slog.LevelInfo,
+	})))
 	godotenv.Load()
 
 	token := os.Getenv("BOT_TOKEN")
@@ -25,29 +29,34 @@ func main() {
 
 	botAPI, err := tgbotapi.NewBotAPIWithClient(token, tgbotapi.APIEndpoint, httpClient)
 	if err != nil {
-		log.Fatal(err)
+		slog.Error("failed to create bot API", "error", err)
+		os.Exit(1)
 	}
 
 	dbStore, err := db.NewStore(dbPath)
 	if err != nil {
-		log.Fatal(err)
+		slog.Error("failed to open database", "path", dbPath, "error", err)
+		os.Exit(1)
 	}
 
 	allowedUsers := parseAllowedUsers(os.Getenv("BOT_ALLOWED_USERS"))
 
 	handler := bot.NewHandler(botAPI, dbStore, allowedUsers)
 
-	log.Printf("Bot started. Allowed users: %d", len(allowedUsers))
+	slog.Info("bot started",
+		"bot_user", botAPI.Self.UserName,
+		"allowed_users", len(allowedUsers),
+		"polling", true,
+	)
 
 	webhookURL := os.Getenv("BOT_WEBHOOK_URL")
 	if webhookURL != "" {
 		startWebhook(botAPI, handler, webhookURL)
 	} else {
 		if _, err := botAPI.Request(tgbotapi.DeleteWebhookConfig{}); err != nil {
-			log.Printf("DeleteWebhook: %v", err)
+			slog.Error("delete webhook", "error", err)
 		}
 
-		// Daily report scheduler
 		go dailyReportScheduler(handler, dbStore)
 
 		u := tgbotapi.NewUpdate(0)
@@ -74,6 +83,8 @@ func parseAllowedUsers(raw string) map[int64]bool {
 		id, err := strconv.ParseInt(s, 10, 64)
 		if err == nil {
 			m[id] = true
+		} else {
+			slog.Warn("invalid user ID in BOT_ALLOWED_USERS", "value", s)
 		}
 	}
 	return m
@@ -86,16 +97,20 @@ func dailyReportScheduler(h *bot.Handler, store *db.Store) {
 		if now.After(next) {
 			next = next.AddDate(0, 0, 1)
 		}
+		slog.Info("daily report scheduler", "next_run", next)
 		time.Sleep(time.Until(next))
 
 		chatIDStr, err := store.GetSetting("chat_id")
 		if err != nil {
+			slog.Error("daily report: chat_id not found")
 			continue
 		}
 		chatID, err := strconv.ParseInt(chatIDStr, 10, 64)
 		if err != nil {
+			slog.Error("daily report: invalid chat_id", "value", chatIDStr)
 			continue
 		}
+		slog.Info("sending daily report", "chat_id", chatID)
 		h.SendDailyReport(chatID)
 	}
 }