Diffstat (limited to 'internal/glightbox/html_renderer.go')
| -rw-r--r-- | internal/glightbox/html_renderer.go | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/internal/glightbox/html_renderer.go b/internal/glightbox/html_renderer.go new file mode 100644 index 0000000..1bb606b --- /dev/null +++ b/internal/glightbox/html_renderer.go @@ -0,0 +1,202 @@ +package glightbox + +import ( + "bytes" + "fmt" + "math/rand" + "regexp" + "strings" + "time" + + "github.com/SayaAndy/saya-today-web/config" + "github.com/SayaAndy/saya-today-web/internal/tailwind" + "github.com/yuin/goldmark" + "github.com/yuin/goldmark/ast" + "github.com/yuin/goldmark/parser" + "github.com/yuin/goldmark/renderer" + "github.com/yuin/goldmark/renderer/html" + "github.com/yuin/goldmark/util" +) + +type GLightboxHTMLRenderer struct { + html.Config + md goldmark.Markdown + anchorMatchRe *regexp.Regexp + photoStorage config.PhotoStorageConfig +} + +func NewGLightboxHTMLRenderer(photoStorage config.PhotoStorageConfig, opts ...html.Option) renderer.NodeRenderer { + r := &GLightboxHTMLRenderer{ + Config: html.NewConfig(), + md: goldmark.New( + goldmark.WithParserOptions( + parser.WithAutoHeadingID(), + parser.WithAttribute(), + ), + goldmark.WithRenderer( + renderer.NewRenderer( + renderer.WithNodeRenderers( + util.Prioritized(tailwind.NewCustomLinkRenderer( + html.WithUnsafe(), html.WithHardWraps(), html.WithXHTML(), + ), 50), + util.Prioritized(html.NewRenderer( + html.WithUnsafe(), html.WithHardWraps(), html.WithXHTML(), + ), 100), + ), + ), + ), + ), + anchorMatchRe: regexp.MustCompile(`(?s)<\s*a(\s+[^<]*)(href\s*=\s*["'].*?["'])\s*([^<]*)>(.*?)<\s*\/\s*a\s*>`), + photoStorage: photoStorage, + } + for _, opt := range opts { + opt.SetHTMLOption(&r.Config) + } + return r +} + +func (r *GLightboxHTMLRenderer) RegisterFuncs(reg renderer.NodeRendererFuncRegisterer) { + reg.Register(KindGLightboxBlock, r.renderGLightbox) +} + +func (r *GLightboxHTMLRenderer) renderGLightbox(w util.BufWriter, source []byte, n ast.Node, entering bool) (ast.WalkStatus, error) { + if entering { + gallery := n.(*GLightboxBlock) + + if len(gallery.Images) == 0 { + return ast.WalkContinue, nil + } + + galleryID := generateDivId(8) + + var elements []string + for i, img := range gallery.Images { + fullImageUrl := gallery.Namespace + img.URL + imageUrlSegments := strings.Split(fullImageUrl, ".") + imageUrlWithoutExt := strings.Join(imageUrlSegments[:len(imageUrlSegments)-1], ".") + imageUrlParts := strings.Split(imageUrlWithoutExt, "/") + imageNameParts := strings.Split(imageUrlParts[len(imageUrlParts)-1], "-") + + var captionBuf bytes.Buffer + captionHTML := img.Caption + if err := r.md.Convert(img.Caption, &captionBuf); err == nil { + captionHTML = captionBuf.Bytes() + captionHTML = bytes.TrimPrefix(captionHTML, []byte("<p>")) + captionHTML = bytes.TrimSuffix(captionHTML, []byte("</p>\n")) + captionHTML = bytes.TrimSuffix(captionHTML, []byte("</p>")) + } + + dayDate, _ := time.Parse("20060102 150405", imageNameParts[len(imageNameParts)-2]+" "+imageNameParts[len(imageNameParts)-1]) + dayDate = dayDate.In(gallery.Location) + + glightboxDescId := "" + if len(captionHTML) != 0 { + glightboxDescId = fmt.Sprintf("glightbox-desc-%s-%d", galleryID, i) + } + + dataDescriptionAttribute := "" + if glightboxDescId != "" { + dataDescriptionAttribute = fmt.Sprintf("data-description=\".%s\"", glightboxDescId) + } + + tagClassList := make([]string, 0, len(img.Tags)) + for _, tag := range img.Tags { + switch tag { + case "2x": + tagClassList = append(tagClassList, "grid-item-2x") + } + } + + if len(img.Caption) > 0 { + tagClassList = append(tagClassList, "grid-tooltip") + } + + anchorlessCaptionHTML := r.anchorMatchRe.ReplaceAll(captionHTML, []byte("<span class=\"linklike\" $1 $3>$4</span>")) + + elements = append(elements, fmt.Sprintf(` + <a href="%[7]s" class="glightbox grid-item %[1]s grid-item-%[2]s p-1" + data-gallery="gallery" data-title="%[3]s" %[4]s> + <picture> + <source media="(width < 800px)" srcset="%[8]s" /> + <source media="(width < 2400px)" srcset="%[9]s" /> + <source media="(width < 3200px)" srcset="%[10]s" /> + <source media="(width < 4000px)" srcset="%[11]s" /> + <source media="(width >= 4000px)" srcset="%[12]s" /> + <img src="%[9]s" /> + </picture> + <span class="grid-tooltip-text"><p>%[5]s</p></span> + <span class="grid-item-index">%[6]d</span> + </a>`, + strings.Join(tagClassList, " "), + galleryID, + dayDate.Format("2006-01-02 15:04:05 -07:00"), + dataDescriptionAttribute, + anchorlessCaptionHTML, + i+1, + fmt.Sprintf(r.photoStorage.Full.BaseUrl, fullImageUrl), + fmt.Sprintf(r.photoStorage.Thumbnail1600p.BaseUrl, imageUrlWithoutExt), + fmt.Sprintf(r.photoStorage.Thumbnail1200p.BaseUrl, imageUrlWithoutExt), + fmt.Sprintf(r.photoStorage.Thumbnail800p.BaseUrl, imageUrlWithoutExt), + fmt.Sprintf(r.photoStorage.Thumbnail560p.BaseUrl, imageUrlWithoutExt), + fmt.Sprintf(r.photoStorage.Thumbnail320p.BaseUrl, imageUrlWithoutExt), + )) + + if glightboxDescId != "" { + elements = append(elements, fmt.Sprintf(` + <div class="glightbox-desc rounded-4 %s"> + <p>%s</p> + </div>`, glightboxDescId, captionHTML)) + } + } + + w.WriteString(strings.ReplaceAll(` +<div class="items-center flex flex-col"> + <hr class="border-t-[0.375rem] border-dotted border-main-hard my-2 w-24 ml-auto mr-auto"> + <div class="grid masonry-grid-{id}"> + <div class="grid-sizer grid-sizer-{id}"></div> + `+strings.Join(elements, "\n")+` + </div> + <hr class="border-t-[0.375rem] border-dotted border-main-hard my-2 w-24 ml-auto mr-auto"> +</div> + +<script> + var pckry_{id} = new Packery('.masonry-grid-{id}', { + itemSelector: '.grid-item-{id}', + columnWidth: '.grid-sizer-{id}', + percentPosition: false + }); + + var imgLoad_{id}_timer; + var imgLoad_{id} = imagesLoaded('.masonry-grid-{id}'); + + function initMasonryLayout_{id}(tm) { + clearTimeout(imgLoad_{id}_timer); + imgLoad_{id}_timer = setTimeout(() => pckry_{id}.layout(), 100); + } + + imgLoad_{id}.on('progress', initMasonryLayout_{id}); + + window.addEventListener('resize', initMasonryLayout_{id}); + + document.addEventListener('popout', (e) => { + window.removeEventListener('resize', initMasonryLayout_{id}); + imgLoad_{id}.off('progress', initMasonryLayout_{id}); + initMasonryLayout_{id} = null; + imgLoad_{id} = null; + }, {once: true}); +</script> +`, "{id}", galleryID)) + } + + return ast.WalkContinue, nil +} + +func generateDivId(length int) string { + const charset = "abcdefghijklmnopqrstuvwxyz" + seededRand := rand.New(rand.NewSource(time.Now().UnixNano())) // Seed with current time + b := make([]byte, length) + for i := range b { + b[i] = charset[seededRand.Intn(len(charset))] + } + return string(b) +} |