package logger

import (
	"os"

	"git.linuxforward.com/byom/byom-golang-lib/pkg/errors"
	"github.com/sirupsen/logrus"
)

type LogConfig struct {
	Level     string
	Formatter string // "json" or "text"
}

func NewLogger(config LogConfig) (*logrus.Logger, error) {
	logger := logrus.New()

	// Set output
	logger.SetOutput(os.Stdout)

	// Validate and set formatter
	switch config.Formatter {
	case "json":
		logger.SetFormatter(&logrus.JSONFormatter{})
	case "text":
		logger.SetFormatter(&logrus.TextFormatter{
			FullTimestamp: true,
		})
	case "":
		// Default to text formatter
		logger.SetFormatter(&logrus.TextFormatter{
			FullTimestamp: true,
		})
	default:
		return nil, errors.NewConfigError("logger.formatter", errors.ErrInvalidInput)
	}

	// Validate and set level
	if config.Level == "" {
		// Default to info level
		logger.SetLevel(logrus.InfoLevel)
	} else {
		level, err := logrus.ParseLevel(config.Level)
		if err != nil {
			return nil, errors.NewConfigError("logger.level", err)
		}
		logger.SetLevel(level)
	}

	return logger, nil
}