package formatters

import (
	"errors"

	"codeberg.org/danjones000/my-log/config"
)

type formatMaker func(config.Formatters) (Formatter, error)

var formatterMap = map[string]formatMaker{
	"plain": newPlain,
	"json":  newJson,
	"zero":  newNull,
}

func Preferred() (f Formatter, err error) {
	conf, err := config.Load()
	if err != nil {
		return
	}
	std, _ := conf.Outputs.Stdout()
	return New(std.Format)
}

func New(kind string) (f Formatter, err error) {
	conf, err := config.Load()
	if err != nil {
		return
	}

	if make, ok := formatterMap[kind]; ok {
		return make(conf.Formatters)
	}

	return nil, errors.New("unimplemented")
}

func Kinds() []string {
	r := []string{}
	for kind, _ := range formatterMap {
		r = append(r, kind)
	}
	return r
}