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|
package lightgallery
import (
"bytes"
"fmt"
"math/rand"
"strings"
"time"
"github.com/yuin/goldmark"
"github.com/yuin/goldmark/ast"
"github.com/yuin/goldmark/renderer"
"github.com/yuin/goldmark/renderer/html"
"github.com/yuin/goldmark/util"
)
type LightGalleryHTMLRenderer struct {
html.Config
md goldmark.Markdown
}
func NewLightGalleryHTMLRenderer(opts ...html.Option) renderer.NodeRenderer {
r := &LightGalleryHTMLRenderer{
Config: html.NewConfig(),
md: goldmark.New(
goldmark.WithRendererOptions(
html.WithHardWraps(),
html.WithXHTML(),
),
),
}
for _, opt := range opts {
opt.SetHTMLOption(&r.Config)
}
return r
}
func (r *LightGalleryHTMLRenderer) RegisterFuncs(reg renderer.NodeRendererFuncRegisterer) {
reg.Register(KindLightGalleryBlock, r.renderLightGallery)
}
func (r *LightGalleryHTMLRenderer) renderLightGallery(w util.BufWriter, source []byte, n ast.Node, entering bool) (ast.WalkStatus, error) {
if entering {
gallery := n.(*LightGalleryBlock)
if len(gallery.Images) == 0 {
return ast.WalkContinue, nil
}
galleryID := generateDivId(8)
w.WriteString(fmt.Sprintf(`
<div class="justify-content-center display-block m-2">
<hr class="border-t-4 border-dotted border-main-dark mt-2 mb-2 w-[80%%] ml-auto mr-auto">
<div id="lg-%s" class="inline-gallery-container relative ml-auto mr-auto"></div>
<hr class="border-t-4 border-dotted border-main-dark mt-2 mb-2 w-[80%%] ml-auto mr-auto">
</div>`, galleryID))
var dynamicElements []string
for _, img := range gallery.Images {
imageUrlSegments := strings.Split(img.URL, ".")
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)
dynamicElements = append(dynamicElements, fmt.Sprintf(`{
src:
"https://f003.backblazeb2.com/file/sayana-photos/full/%s",
downloadUrl:
"https://f003.backblazeb2.com/file/sayana-photos/full/%s",
alt: "%s",
responsive: "https://f003.backblazeb2.com/file/sayana-photos/webp-320p/%s.webp 384, https://f003.backblazeb2.com/file/sayana-photos/webp-560p/%s.webp 672, https://f003.backblazeb2.com/file/sayana-photos/webp-800p/%s.webp 960, https://f003.backblazeb2.com/file/sayana-photos/webp-1200p/%s.webp 1440, https://f003.backblazeb2.com/file/sayana-photos/webp-1600p/%s.webp 1920",
thumb:
"https://f003.backblazeb2.com/file/sayana-photos/webp-320p/%s.webp",
subHtml: `+"`"+`<div class="flex flex-row light-gallery-captions">
<p class="grow !text-base/[1] text-left font-spectral text-main-dark">%s</p>
<p class="!text-base/[1] text-right font-spectral text-secondary">%s</p>
</div>`+"`"+`
}`, img.URL, img.URL, util.EscapeHTML(captionHTML), imageUrlWithoutExt, imageUrlWithoutExt, imageUrlWithoutExt, imageUrlWithoutExt, imageUrlWithoutExt, imageUrlWithoutExt, captionHTML, dayDate.Format("2006-01-02 15:04:05 -07:00")))
}
w.WriteString(fmt.Sprintf(`
<script>
function createLightGallery%s() {
const $lgContainer = document.getElementById('lg-%s');
const config = {
container: $lgContainer,
dynamic: true,
dynamicEl: [%s],
width: "100%%",
height: "50vmin",
hash: false,
closable: false,
showMaximizeIcon: true,
appendSubHtmlTo: ".lg-sub-html",
isMobile: () => false,
slideDelay: 0,
plugins: [lgZoom, lgThumbnail],
thumbWidth: calculateVmin(10),
thumbHeight: "10vmin",
thumbMargin: 4
};
const inlineGallery = lightGallery($lgContainer, config);
setTimeout(() => {
inlineGallery.openGallery();
}, 200);
galleryMap.set(inlineGallery, createLightGallery%s);
}
document.addEventListener('htmx:afterRequest', (e) => {
if (e.detail.xhr.status == 404 || e.detail.successful != true) {
return console.error(e);
}
if (e.detail.target.id == 'general-page-body') {
createLightGallery%s();
}
}, {once: true});
</script>`, galleryID, galleryID, strings.Join(dynamicElements, ","), galleryID, 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)
}
|
