Add relay sitemaps

main.go

@@ -46,6 +46,7 @@ func main() {
 	templateMapping["note"] = "note.html"
 	templateMapping["address"] = "other.html"
 	templateMapping["relay"] = "relay.html"
+	templateMapping["relay_sitemap"] = "sitemap.xml"
 
 	funcMap := template.FuncMap{
 		"basicFormatting": basicFormatting,

render_relay.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"net/http"
+	"strings"
 	"time"
 
 	"github.com/nbd-wtf/go-nostr"
@@ -13,8 +14,12 @@ import (
 
 func renderRelayPage(w http.ResponseWriter, r *http.Request) {
 	code := r.URL.Path[1:]
-
 	hostname := code
+	typ := "relay"
+	if strings.HasSuffix(hostname, ".xml") {
+		hostname = code[:len(hostname)-4]
+		typ = "relay_sitemap"
+	}
 
 	fmt.Println("hostname", hostname)
 
@@ -30,23 +35,31 @@ func renderRelayPage(w http.ResponseWriter, r *http.Request) {
 	}
 
 	// last notes
+	events_num := 50
+	if typ == "relay_sitemap" {
+		events_num = 50000
+	}
 	var lastNotes []*nostr.Event
 	if relay, err := pool.EnsureRelay(hostname); err == nil {
 		lastNotes, _ = relay.QuerySync(ctx, nostr.Filter{
 			Kinds: []int{1},
-			Limit: 50,
+			Limit: events_num,
 		})
 	}
 	renderableLastNotes := make([]*Event, len(lastNotes))
+	lastEventAt := time.Now()
 	for i, n := range lastNotes {
 		nevent, _ := nip19.EncodeEvent(n.ID, []string{}, n.PubKey)
-		date := time.Unix(int64(n.CreatedAt), 0).Format("2006-01-02 15:04:05")
 		renderableLastNotes[i] = &Event{
 			Nevent:       nevent,
 			Content:      n.Content,
-			CreatedAt:    date,
+			CreatedAt:    time.Unix(int64(n.CreatedAt), 0).Format("2006-01-02 15:04:05"),
+			ModifiedAt:   time.Unix(int64(n.CreatedAt), 0).Format("2006-01-02T15:04:05Z07:00"),
 			ParentNevent: getParentNevent(n),
 		}
+		if i == 0 {
+			lastEventAt = time.Unix(int64(n.CreatedAt), 0)
+		}
 	}
 
 	params := map[string]any{
@@ -58,12 +71,13 @@ func renderRelayPage(w http.ResponseWriter, r *http.Request) {
 		"hostname":   hostname,
 		"proxy":      "https://" + hostname + "/njump/proxy?src=",
 		"lastNotes":  renderableLastNotes,
+		"modifiedAt": lastEventAt.Format("2006-01-02T15:04:05Z07:00"),
 	}
 
 	// +build !nocache
 	w.Header().Set("Cache-Control", "max-age=604800")
 
-	if err := tmpl.ExecuteTemplate(w, templateMapping["relay"], params); err != nil {
+	if err := tmpl.ExecuteTemplate(w, templateMapping[typ], params); err != nil {
 		log.Error().Err(err).Msg("error rendering")
 		return
 	}

templates/head.html

@@ -59,6 +59,8 @@
   <!----------->
   {{ if eq .type "relay" }}
   <title>Nostr Relay {{.hostname}}</title>
+  <link rel="sitemap" type="application/xml" title="Sitemap for {{.hostname | escapeString}}"
+    href="/{{.hostname | escapeString}}.xml">
   {{end}}
   <!----------->
   {{ if eq .type "other" }}

templates/sitemap.xml

@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
 	<url>
-    <loc>https://nostr.com/{{.npub | escapeString}}</loc>
+		{{if .npub}}<loc>https://nostr.com/{{.npub | escapeString}}</loc>{{end}}
+		{{if .hostname}}<loc>https://nostr.com/{{.hostname | escapeString}}</loc>{{end}}
 		<lastmod>{{.modifiedAt | escapeString}}</lastmod>
 		<changefreq>daily</changefreq>
 		<priority>0.8</priority>