package log

import (
	"bytes"
	"errors"
	"fmt"
)

type outFormat string

var (
	errUnmarshalNilFormat = errors.New("can't unmarshal a nil *outFormat")
)

const (
	Json    outFormat = "json"
	console outFormat = "console"
)

func (f *outFormat) parseFormat(text string) (outFormat, error) {
	var format outFormat
	err := format.UnmarshalText([]byte(text))
	return format, err
}

func (f *outFormat) UnmarshalText(text []byte) error {
	if f == nil {
		return errUnmarshalNilFormat
	}

	if !f.unmarshalText(text) && !f.unmarshalText(bytes.ToLower(text)) {
		return fmt.Errorf("unrecognized outFormat: %q", text)
	}

	return nil
}

func (f *outFormat) unmarshalText(text []byte) bool {
	switch string(text) {
	case "json", "JSON":
		*f = Json
	case "console", "CONSOLE", "":
		*f = console
	default:
		return false
	}

	return true
}

func (c *syncConf) setDefaultSyncConf() {
	if c.MaxAges <= 0 {
		c.MaxAges = defaultMaxAges
	}

	if c.MaxBackUps <= 0 {
		c.MaxBackUps = defaultMaxBAckUps
	}

	if c.MaxAges <= 0 {
		c.MaxSize = defaultMaxSize
	}
}