package parse

import (
	"TheAdversary/config"
	"TheAdversary/schema"
	"github.com/gomarkdown/markdown"
	"github.com/gomarkdown/markdown/ast"
	"github.com/gomarkdown/markdown/html"
	"github.com/gomarkdown/markdown/parser"
	"os"
)

func newParser() *parser.Parser {
	extensions := parser.CommonExtensions | parser.AutoHeadingIDs

	return parser.NewWithExtensions(extensions)
}

func newHtmlRenderer(title string) *html.Renderer {
	renderOpts := html.RendererOptions{
		Title: title,
		Flags: html.CommonFlags | html.CompletePage,
	}
	return html.NewRenderer(renderOpts)
}

func Parse(path string) (ast.Node, error) {
	raw, err := os.ReadFile(path)
	if err != nil {
		return nil, err
	}
	return markdown.Parse(raw, newParser()), nil
}

func ParseToHtml(article *schema.Article) ([]byte, error) {
	node, err := Parse(article.FilePath(config.ArticleRoot))
	if err != nil {
		return nil, err
	}
	return markdown.Render(node, newHtmlRenderer(article.Title)), nil
}