From a20dcee2e9f19e0aa124a8a50dafe44462136830 Mon Sep 17 00:00:00 2001
From: Daniele Tonon <tonon@vitamino.it>
Date: Wed, 6 Sep 2023 13:57:35 +0200
Subject: [PATCH] Enable custom canonical via ENV

---
 main.go                |  8 +++-----
 render.go              |  1 +
 render_archive.go      |  1 +
 render_relay.go        | 13 +++++++------
 templates/note.html    |  2 +-
 templates/profile.html |  2 +-
 6 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/main.go b/main.go
index 4177914..868bac9 100644
--- a/main.go
+++ b/main.go
@@ -15,7 +15,8 @@ import (
 )
 
 type Settings struct {
-	Port string `envconfig:"PORT" default:"2999"`
+	Port          string `envconfig:"PORT" default:"2999"`
+	CanonicalHost string `envconfig:"CANONICAL_HOST" default:"njump.me"`
 }
 
 //go:embed static/*
@@ -25,11 +26,9 @@ var static embed.FS
 var templates embed.FS
 
 var (
-	s Settings
-
+	s               Settings
 	tmpl            *template.Template
 	templateMapping = make(map[string]string)
-
 	log = zerolog.New(os.Stderr).Output(zerolog.ConsoleWriter{Out: os.Stdout}).With().Timestamp().Logger()
 )
 
@@ -53,7 +52,6 @@ func main() {
 	if err != nil {
 		log.Fatal().Err(err).Msg("couldn't process envconfig.")
 	}
-
 	// initialize disk cache
 	defer cache.initialize()()
 
diff --git a/render.go b/render.go
index 8d61bf2..18444a6 100644
--- a/render.go
+++ b/render.go
@@ -322,6 +322,7 @@ func render(w http.ResponseWriter, r *http.Request) {
 		"lastNotes":       renderableLastNotes,
 		"parentNevent":    parentNevent,
 		"authorRelays":    authorRelays,
+		"CanonicalHost":   s.CanonicalHost,
 	}
 
 	// if a mapping is not found fallback to raw
diff --git a/render_archive.go b/render_archive.go
index b1af551..455b4a1 100644
--- a/render_archive.go
+++ b/render_archive.go
@@ -62,6 +62,7 @@ func renderArchive(w http.ResponseWriter, r *http.Request) {
 		"paginationUrl": area,
 		"nextPage":      fmt.Sprint(nextPage),
 		"prevPage":      fmt.Sprint(prevPage),
+		"CanonicalHost": s.CanonicalHost,
 	}
 
 	if len(data) != 0 {
diff --git a/render_relay.go b/render_relay.go
index 777d886..816b997 100644
--- a/render_relay.go
+++ b/render_relay.go
@@ -64,12 +64,13 @@ func renderRelayPage(w http.ResponseWriter, r *http.Request) {
 		"clients": []ClientReference{
 			{Name: "Coracle", URL: "https://coracle.social/relays/" + hostname},
 		},
-		"type":       "relay",
-		"info":       info,
-		"hostname":   hostname,
-		"proxy":      "https://" + hostname + "/njump/proxy?src=",
-		"lastNotes":  renderableLastNotes,
-		"modifiedAt": lastEventAt.Format("2006-01-02T15:04:05Z07:00"),
+		"type":          "relay",
+		"info":          info,
+		"hostname":      hostname,
+		"proxy":         "https://" + hostname + "/njump/proxy?src=",
+		"lastNotes":     renderableLastNotes,
+		"modifiedAt":    lastEventAt.Format("2006-01-02T15:04:05Z07:00"),
+		"CanonicalHost": s.CanonicalHost,
 	}
 
 	if len(renderableLastNotes) != 0 {
diff --git a/templates/note.html b/templates/note.html
index ff997a7..cdd9ba7 100644
--- a/templates/note.html
+++ b/templates/note.html
@@ -30,7 +30,7 @@
     <meta name="twitter:description" content="{{.description | escapeString}}" />
     {{end}}
 
-    <link rel="canonical" href="https://nostr.com/{{.nevent | escapeString }}" />
+    <link rel="canonical" href="https://{{.CanonicalHost}}/{{.nevent | escapeString }}" />
 
     {{template "head_common.html" }}
   </head>
diff --git a/templates/profile.html b/templates/profile.html
index 426a702..d4c83c3 100644
--- a/templates/profile.html
+++ b/templates/profile.html
@@ -20,7 +20,7 @@
     {{end}}
     <meta property="twitter:card" content="summary" />
 
-    <link rel="canonical" href="https://nostr.com/{{.npub | escapeString }}" />
+    <link rel="canonical" href="https://{{.CanonicalHost}}/{{.npub | escapeString }}" />
     <link
       rel="sitemap"
       type="application/xml"