package logging

import (
	"os"

	logrus_stack "github.com/Gurpartap/logrus-stack"
	"github.com/sirupsen/logrus"
)

// Logger return the standard logrus logger.
func Logger() *logrus.Logger {
	return logrus.StandardLogger()
}

// SetLevel set the level of the logger.
func SetLevel(level logrus.Level) {
	logrus.SetLevel(level)
}

// InitializeLogger initialize logger.
func InitializeLogger(format, filename string) error {
	callerLevels := []logrus.Level{}
	stackLevels := []logrus.Level{logrus.PanicLevel, logrus.FatalLevel, logrus.ErrorLevel}
	logrus.AddHook(logrus_stack.NewHook(callerLevels, stackLevels))

	if format == "json" {
		logrus.SetFormatter(&logrus.JSONFormatter{})
	} else {
		logrus.SetFormatter(&logrus.TextFormatter{})
	}

	if filename != "" {
		f, err := os.OpenFile(filename, os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0600)

		if err != nil {
			return err
		}

		logrus.SetOutput(f)
	}

	return nil
}