package xlog

import (
	"bytes"
	"errors"
)

type Level uint8

const (
	LevelDebug Level = iota
	LevelInfo
	LevelWarn
	LevelError
)

func (l *Level) UnmarshalText(data []byte) error {
	switch levelstr := string(bytes.ToLower(data)); levelstr {
	case "debug":
		*l = LevelDebug
	case "info":
		*l = LevelInfo
	case "warn":
		*l = LevelWarn
	case "error":
		*l = LevelError
	default:
		return errors.New("unsupported level " + levelstr)
	}

	return nil
}

func (l Level) String() string {
	switch l {
	case LevelDebug:
		return "debug"
	case LevelInfo:
		return "info"
	case LevelWarn:
		return "warn"
	case LevelError:
		return "error"
	default:
		return ""
	}
}

type Format uint8

const (
	FormatText Format = iota
	FormatJSON
)

func (f *Format) UnmarshalText(data []byte) error {
	switch formatstr := string(bytes.ToLower(data)); formatstr {
	case "debug":
		*f = FormatText
	case "info":
		*f = FormatJSON
	default:
		return errors.New("unsupported format " + formatstr)
	}

	return nil
}