Add an option to mdToHTML to strip links

markdown.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"io"
+	"regexp"
 	"strings"
 
 	"github.com/gomarkdown/markdown"
@@ -21,6 +22,16 @@ var mdrenderer = html.NewRenderer(html.RendererOptions{
 	Flags: html.CommonFlags | html.HrefTargetBlank,
 })
 
+func stripLinksFromMarkdown(md string) string {
+	// Regular expression to match Markdown links and HTML links
+	linkRegex := regexp.MustCompile(`\[([^\]]*)\]\([^)]*\)|<a[^>]*>(.*?)</a>`)
+
+	// Replace both Markdown and HTML links with just the link text
+	strippedMD := linkRegex.ReplaceAllString(md, "$1$2")
+
+	return strippedMD
+}
+
 var tgivmdrenderer = html.NewRenderer(html.RendererOptions{
 	Flags: html.CommonFlags | html.HrefTargetBlank,
 	RenderNodeHook: func(w io.Writer, node ast.Node, entering bool) (ast.WalkStatus, bool) {
@@ -46,7 +57,7 @@ var tgivmdrenderer = html.NewRenderer(html.RendererOptions{
 	},
 })
 
-func mdToHTML(md string, usingTelegramInstantView bool) string {
+func mdToHTML(md string, usingTelegramInstantView bool, skipLinks bool) string {
 	md = strings.ReplaceAll(md, "\u00A0", " ")
 	md = replaceNostrURLsWithTags(nostrEveryMatcher, md)
 
@@ -61,6 +72,10 @@ func mdToHTML(md string, usingTelegramInstantView bool) string {
 	// create HTML renderer with extensions
 	output := string(markdown.Render(doc, renderer))
 
+	if skipLinks {
+		output = stripLinksFromMarkdown(output)
+	}
+
 	// sanitize content
 	output = sanitizeXSS(output)
 

render_embedded.go

@@ -30,7 +30,7 @@ func renderEmbedded(w http.ResponseWriter, r *http.Request, code string) {
 	}
 
 	if data.event.Kind == 30023 || data.event.Kind == 30024 {
-		data.content = mdToHTML(data.content, data.templateId == TelegramInstantView)
+		data.content = mdToHTML(data.content, data.templateId == TelegramInstantView, true)
 	} else {
 		// first we run basicFormatting, which turns URLs into their appropriate HTML tags
 		data.content = basicFormatting(html.EscapeString(data.content), true, false, false)

render_event.go

@@ -252,7 +252,7 @@ func renderEvent(w http.ResponseWriter, r *http.Request) {
 		data.content = strings.ReplaceAll(data.content, placeholderTag, "nostr:"+nreplace)
 	}
 	if data.event.Kind == 30023 || data.event.Kind == 30024 {
-		data.content = mdToHTML(data.content, data.templateId == TelegramInstantView)
+		data.content = mdToHTML(data.content, data.templateId == TelegramInstantView, false)
 	} else {
 		// first we run basicFormatting, which turns URLs into their appropriate HTML tags
 		data.content = basicFormatting(html.EscapeString(data.content), true, false, false)