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-rw-r--r--internal/lightgallery/block.go31
-rw-r--r--internal/lightgallery/extension.go28
-rw-r--r--internal/lightgallery/html_renderer.go137
-rw-r--r--internal/lightgallery/parser.go88
4 files changed, 284 insertions, 0 deletions
diff --git a/internal/lightgallery/block.go b/internal/lightgallery/block.go
new file mode 100644
index 0000000..8eb7c9e
--- /dev/null
+++ b/internal/lightgallery/block.go
@@ -0,0 +1,31 @@
+package lightgallery
+
+import (
+ "time"
+
+ "github.com/yuin/goldmark/ast"
+)
+
+// LightGalleryBlock represents a light gallery block in the AST
+type LightGalleryBlock struct {
+ ast.BaseBlock
+ Images []LightGalleryImage
+ Location *time.Location
+}
+
+type LightGalleryImage struct {
+ URL string
+ Caption []byte
+}
+
+var KindLightGalleryBlock = ast.NewNodeKind("LightGalleryBlock")
+
+// Dump implements ast.Node.Dump
+func (n *LightGalleryBlock) Dump(source []byte, level int) {
+ ast.DumpHelper(n, source, level, nil, nil)
+}
+
+// Kind implements ast.Node.Kind
+func (n *LightGalleryBlock) Kind() ast.NodeKind {
+ return KindLightGalleryBlock
+}
diff --git a/internal/lightgallery/extension.go b/internal/lightgallery/extension.go
new file mode 100644
index 0000000..761dc05
--- /dev/null
+++ b/internal/lightgallery/extension.go
@@ -0,0 +1,28 @@
+package lightgallery
+
+import (
+ "github.com/yuin/goldmark"
+ "github.com/yuin/goldmark/parser"
+ "github.com/yuin/goldmark/renderer"
+ "github.com/yuin/goldmark/util"
+)
+
+// Extension that combines parser and renderer
+type LightGalleryExtension struct{}
+
+func NewLightGalleryExtension() goldmark.Extender {
+ return &LightGalleryExtension{}
+}
+
+func (e *LightGalleryExtension) Extend(m goldmark.Markdown) {
+ m.Parser().AddOptions(
+ parser.WithBlockParsers(
+ util.Prioritized(NewLightGalleryParser(), 500),
+ ),
+ )
+ m.Renderer().AddOptions(
+ renderer.WithNodeRenderers(
+ util.Prioritized(NewLightGalleryHTMLRenderer(), 500),
+ ),
+ )
+}
diff --git a/internal/lightgallery/html_renderer.go b/internal/lightgallery/html_renderer.go
new file mode 100644
index 0000000..17a6f2b
--- /dev/null
+++ b/internal/lightgallery/html_renderer.go
@@ -0,0 +1,137 @@
+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-[0.8vmin] mb-[0.8vmin] 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-[0.8vmin] mb-[0.8vmin] 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], ".")
+ imageNameParts := strings.Split(imageUrlWithoutExt, "-")
+
+ 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-[1vmax]/[1] text-left font-spectral text-main-dark">%s</p>
+ <p class="!text-[1vmax]/[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('DOMContentLoaded', createLightGallery%s);
+</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)
+}
diff --git a/internal/lightgallery/parser.go b/internal/lightgallery/parser.go
new file mode 100644
index 0000000..daec797
--- /dev/null
+++ b/internal/lightgallery/parser.go
@@ -0,0 +1,88 @@
+package lightgallery
+
+import (
+ "bytes"
+ "log/slog"
+ "regexp"
+ "time"
+
+ "github.com/yuin/goldmark/ast"
+ "github.com/yuin/goldmark/parser"
+ "github.com/yuin/goldmark/text"
+)
+
+type LightGalleryParser struct{}
+
+func NewLightGalleryParser() parser.BlockParser {
+ return &LightGalleryParser{}
+}
+
+func (p *LightGalleryParser) Trigger() []byte {
+ return []byte{'{'}
+}
+
+func (p *LightGalleryParser) Open(parent ast.Node, reader text.Reader, pc parser.Context) (ast.Node, parser.State) {
+ line, _ := reader.PeekLine()
+
+ if !bytes.HasPrefix(line, []byte("{Gallery:")) {
+ return nil, parser.NoChildren
+ }
+
+ r := regexp.MustCompile(`^\{Gallery:([A-Za-z0-9\+\-/]+)\}$`)
+
+ trimmed := bytes.TrimSpace(line)
+ parts := r.FindSubmatch(trimmed)
+ if len(parts) < 2 {
+ slog.Warn("invalid gallery header format", slog.String("line", string(trimmed)), slog.Int("submatch_count", len(parts)))
+ return nil, parser.NoChildren
+ }
+
+ loc, err := time.LoadLocation(string(parts[1]))
+ if err != nil {
+ slog.Warn("invalid location specified for a gallery", slog.String("error", err.Error()), slog.String("line", string(trimmed)), slog.String("location", string(parts[1])))
+ return nil, parser.NoChildren
+ }
+
+ return &LightGalleryBlock{Location: loc}, parser.NoChildren
+}
+
+func (p *LightGalleryParser) Continue(node ast.Node, reader text.Reader, pc parser.Context) parser.State {
+ line, segment := reader.PeekLine()
+ if len(line) == 0 || segment.Len() == 0 {
+ return parser.Continue | parser.NoChildren
+ }
+
+ trimmed := bytes.TrimSpace(line)
+ if bytes.Equal(trimmed, []byte("{Gallery}")) || bytes.Equal(trimmed, []byte("{/Gallery}")) {
+ reader.AdvanceLine()
+ return parser.Close
+ }
+
+ gallery := node.(*LightGalleryBlock)
+
+ parts := bytes.SplitN(trimmed, []byte{'|'}, 2)
+ url := bytes.TrimSpace(parts[0])
+
+ caption := make([]byte, 0)
+ if len(parts) > 1 {
+ caption = bytes.TrimSpace(parts[1])
+ }
+
+ gallery.Images = append(gallery.Images, LightGalleryImage{
+ URL: string(url),
+ Caption: caption,
+ })
+
+ return parser.Continue | parser.NoChildren
+}
+
+func (p *LightGalleryParser) Close(node ast.Node, reader text.Reader, pc parser.Context) {
+}
+
+func (p *LightGalleryParser) CanInterruptParagraph() bool {
+ return true
+}
+
+func (p *LightGalleryParser) CanAcceptIndentedLine() bool {
+ return false
+}
generated by cgitext v1.3.1+16 (git 2.54.0) at 2026-09-07 18:16:52 +0000