1package markdown
 2
 3import (
 4	"fmt"
 5	"os"
 6	gotmpl "text/template"
 7	"time"
 8
 9	"git.icyphox.sh/vite/config"
10	"git.icyphox.sh/vite/markdown/template"
11
12	bf "git.icyphox.sh/grayfriday"
13)
14
15var (
16	bfFlags = bf.UseXHTML | bf.Smartypants | bf.SmartypantsFractions |
17		bf.SmartypantsDashes | bf.NofollowLinks | bf.FootnoteReturnLinks
18	bfExts = bf.NoIntraEmphasis | bf.Tables | bf.FencedCode | bf.Autolink |
19		bf.Strikethrough | bf.SpaceHeadings | bf.BackslashLineBreak |
20		bf.AutoHeadingIDs | bf.HeadingIDs | bf.Footnotes | bf.NoEmptyLineBeforeBlock
21)
22
23type Output struct {
24	HTML []byte
25	Meta Matter
26}
27
28// Renders markdown to html, and fetches metadata.
29func (out *Output) RenderMarkdown(source []byte) error {
30	md := MarkdownDoc{}
31	if err := md.Extract(source); err != nil {
32		return fmt.Errorf("markdown: %w", err)
33	}
34
35	out.HTML = bf.Run(
36		md.Body,
37		bf.WithNoExtensions(),
38		bf.WithRenderer(bf.NewHTMLRenderer(bf.HTMLRendererParameters{Flags: bfFlags})),
39		bf.WithExtensions(bfExts),
40	)
41	out.Meta = md.Frontmatter
42	return nil
43}
44
45// Renders out.HTML into dst html file, using the template specified
46// in the frontmatter. data is the template struct.
47func (out *Output) RenderHTML(dst, tmplDir string, data interface{}) error {
48	metaTemplate := out.Meta["template"]
49	if metaTemplate == "" {
50		metaTemplate = config.Config.DefaultTemplate
51	}
52
53	tmpl := template.NewTmpl()
54	tmpl.SetFuncs(gotmpl.FuncMap{
55		"parsedate": func(s string) time.Time {
56			date, _ := time.Parse("2006-01-02", s)
57			return date
58		},
59	})
60	if err := tmpl.Load(tmplDir); err != nil {
61		return err
62	}
63
64	w, err := os.Create(dst)
65	if err != nil {
66		return err
67	}
68
69	if err = tmpl.ExecuteTemplate(w, metaTemplate, data); err != nil {
70		return err
71	}
72	return nil
73}