func configureLogging()

in client/cmd/client/main.go [90:117]

• 23 lines of code
• 4 McCabe index (conditional complexity)

func configureLogging(logFile string, verbose bool) (*zap.Logger, error) {
	if err := os.MkdirAll(filepath.Dir(logFile), 0755); err != nil {
		return nil, fmt.Errorf("failed to create log directory: %w", err)
	}

	logFileHandle, err := os.OpenFile(logFile, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
	if err != nil {
		return nil, fmt.Errorf("failed to open log file: %w", err)
	}

	encoderConfig := zap.NewProductionEncoderConfig()
	encoderConfig.TimeKey = "timestamp"
	encoderConfig.EncodeTime = zapcore.RFC3339NanoTimeEncoder

	fileEncoder := zapcore.NewJSONEncoder(encoderConfig)
	consoleEncoder := zapcore.NewConsoleEncoder(encoderConfig)

	level := zap.InfoLevel
	if verbose {
		level = zap.DebugLevel
	}

	core := zapcore.NewTee(
		zapcore.NewCore(fileEncoder, zapcore.AddSync(logFileHandle), level),
		zapcore.NewCore(consoleEncoder, zapcore.AddSync(os.Stdout), level),
	)
	return zap.New(core), nil
}