feat: adjustable log level

botcmd_translate.go

@@ -49,7 +49,6 @@ func handleTranslateCmd(c tele.Context) error {
 			tele.Silent,
 		)
 	}
-	logger.Infof("trimmed message: %q", payload)
 
 	_, err := c.Bot().Reply(msg, "Sure. To what language?", tele.Silent, translateMenu)
 	return err

cfg.go

@@ -10,6 +10,7 @@ import (
 )
 
 type ConfigDef struct {
+	LogLevel           string  `env:"TG_LOG_LEVEL" env-default:"info"`
 	AdminUIDs          []int64 `env:"TG_ADMIN_UIDS"`
 	TGBotToken         string  `env:"TG_TOKEN" env-required:""`
 	TGAnnounceCommands bool    `env:"TG_ANNOUNCE_CMDS"`

main.go

@@ -7,6 +7,7 @@ import (
 	"time"
 
 	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
 	tele "gopkg.in/telebot.v3"
 
 	"git.gensokyo.cafe/kkyy/mycurrencynet"
@@ -14,9 +15,13 @@ import (
 )
 
 var logger *zap.SugaredLogger
+var loglvl zap.AtomicLevel
 
 func initLogger() {
-	l, err := zap.NewProduction()
+	logCfg := zap.NewProductionConfig()
+	loglvl = logCfg.Level
+
+	l, err := logCfg.Build()
 	if err != nil {
 		panic(err)
 	}
@@ -89,6 +94,12 @@ func main() {
 	if err := LoadCfg(); err != nil {
 		logger.Fatalw("Failed to load config", "err", err)
 	}
+	parsedLvl, err := zapcore.ParseLevel(config.LogLevel)
+	if err != nil {
+		logger.Warnf("Invalid log level %q", config.LogLevel)
+	} else {
+		loglvl.SetLevel(parsedLvl)
+	}
 
 	runBot()
 }