refactor(logger): minor tweaks

- only write debug logs to file and not on the terminal
- remove stack trace for error logging

cmd/fsb/run.go

@@ -36,8 +36,7 @@ func runApp(cmd *cobra.Command, args []string) {
 
 	mainBot, err := bot.StartClient(log)
 	if err != nil {
-		log.Info(err.Error())
-		return
+		log.Panic("Failed to start main bot", zap.Error(err))
 	}
 	cache.InitCache(log)
 	workers, err := bot.StartWorkers(log)

config/config.go

@@ -38,7 +38,7 @@ func (c *config) loadFromEnvFile(log *zap.Logger) {
 	err := godotenv.Load(envPath)
 	if err != nil {
 		if os.IsNotExist(err) {
-			log.WithOptions(zap.AddStacktrace(zap.DPanicLevel)).Sugar().Errorf("ENV file not found: %s", envPath)
+			log.Sugar().Errorf("ENV file not found: %s", envPath)
 			log.Sugar().Info("Please create fsb.env file")
 			log.Sugar().Info("For more info, refer: https://github.com/EverythingSuckz/TG-FileStreamBot/tree/golang#setting-up-things")
 			log.Sugar().Info("Please ignore this message if you are hosting it in a service like Heroku or other alternatives.")

internal/routes/stream.go

@@ -104,7 +104,7 @@ func getStreamRoute(ctx *gin.Context) {
 		}
 		lr, _ := utils.NewTelegramReader(ctx, worker.Client, file.Location, start, end, contentLength)
 		if _, err := io.CopyN(w, lr, contentLength); err != nil {
-			log.WithOptions(zap.AddStacktrace(zap.DPanicLevel)).Error(err.Error())
+			log.Error("Error while copying stream", zap.Error(err))
 		}
 	}
 }

internal/utils/logger.go

@@ -19,7 +19,6 @@ func InitLogger() {
 	consoleConfig.EncodeLevel = zapcore.CapitalColorLevelEncoder
 	consoleConfig.EncodeTime = customTimeEncoder
 	consoleEncoder := zapcore.NewConsoleEncoder(consoleConfig)
-	defaultLogLevel := zapcore.DebugLevel
 
 	fileEncoderConfig := zap.NewProductionEncoderConfig()
 	fileEncoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
@@ -34,9 +33,9 @@ func InitLogger() {
 	})
 
 	core := zapcore.NewTee(
-		zapcore.NewCore(consoleEncoder, zapcore.AddSync(os.Stdout), defaultLogLevel),
-		zapcore.NewCore(fileEncoder, fileWriter, defaultLogLevel),
+		zapcore.NewCore(consoleEncoder, zapcore.AddSync(os.Stdout), zapcore.InfoLevel),
+		zapcore.NewCore(fileEncoder, fileWriter, zapcore.DebugLevel),
 	)
 
-	Logger = zap.New(core, zap.AddStacktrace(zapcore.ErrorLevel))
+	Logger = zap.New(core, zap.AddStacktrace(zapcore.FatalLevel))
 }