package article

import (
	"errors"
	"strings"
)

var ErrUnsupportedBodyFormat = errors.New("unsupported body format")

type BodyFormat string

const (
	BodyFormatMarkdown BodyFormat = "markdown"
	BodyFormatHTML     BodyFormat = "html"
	BodyFormatJSON     BodyFormat = "json"
)

func ParseBodyFormat(value string) (BodyFormat, error) {
	switch strings.ToLower(value) {
	case "", string(BodyFormatMarkdown):
		return BodyFormatMarkdown, nil
	case string(BodyFormatHTML):
		return BodyFormatHTML, nil
	case string(BodyFormatJSON):
		return BodyFormatJSON, nil
	}
	return "", ErrUnsupportedBodyFormat
}

type BodyRenderer interface {
	Render(html string, format BodyFormat) (string, error)
}