Support embedding notes in external web pages

SQASH

render_embedded.go

@@ -0,0 +1,63 @@
+package main
+
+import (
+	"fmt"
+	"html"
+	"html/template"
+	"net/http"
+)
+
+func renderEmbedded(w http.ResponseWriter, r *http.Request, code string) {
+	fmt.Println(r.URL.Path, "@.", r.Header.Get("user-agent"))
+
+	data, err := grabData(r.Context(), code, false)
+	if err != nil {
+		w.Header().Set("Cache-Control", "max-age=60")
+		errorPage := &ErrorPage{
+			Errors: err.Error(),
+		}
+		errorPage.TemplateText()
+		w.WriteHeader(http.StatusNotFound)
+		ErrorTemplate.Render(w, errorPage)
+		return
+	}
+
+	var subject string
+	for _, tag := range data.event.Tags {
+		if tag[0] == "subject" || tag[0] == "title" {
+			subject = tag[1]
+		}
+	}
+
+	if data.event.Kind == 30023 || data.event.Kind == 30024 {
+		data.content = mdToHTML(data.content, data.templateId == TelegramInstantView)
+	} else {
+		// first we run basicFormatting, which turns URLs into their appropriate HTML tags
+		data.content = basicFormatting(html.EscapeString(data.content), true, false)
+		// then we render quotes as HTML, which will also apply basicFormatting to all the internal quotes
+		data.content = renderQuotesAsHTML(r.Context(), data.content, data.templateId == TelegramInstantView)
+		// we must do this because inside <blockquotes> we must treat <img>s differently when telegram_instant_view
+	}
+
+	switch data.templateId {
+	case Note:
+		err = EmbeddedNoteTemplate.Render(w, &EmbeddedNotePage{
+			Content:   template.HTML(data.content),
+			CreatedAt: data.createdAt,
+			Metadata:  data.metadata,
+			Npub:      data.npub,
+			NpubShort: data.npubShort,
+			Subject:   subject,
+			Url:       code,
+		})
+
+	default:
+		log.Error().Int("templateId", int(data.templateId)).Msg("no way to render")
+		http.Error(w, "tried to render an unsupported template at render_event.go", 500)
+	}
+
+	if err != nil {
+		log.Error().Err(err).Msg("error rendering tmpl")
+	}
+	return
+}