package notes

import (
	"errors"
	"io/ioutil"
	"local/notes-server/filetree"

	"github.com/gomarkdown/markdown"
	"github.com/gomarkdown/markdown/html"
	"github.com/gomarkdown/markdown/parser"
)

func (n *Notes) File(urlPath string) (string, error) {
	p := filetree.NewPathFromURL(urlPath)
	if p.IsDir() {
		return "", errors.New("path is dir")
	}
	b, _ := ioutil.ReadFile(p.Local)
	renderer := html.NewRenderer(html.RendererOptions{
		Flags: html.CommonFlags | html.TOC,
	})
	parser := parser.NewWithExtensions(parser.CommonExtensions | parser.HeadingIDs | parser.AutoHeadingIDs | parser.Titleblock)
	content := markdown.ToHTML(b, parser, renderer)
	return string(content) + "\n", nil
}