opt: gzip + no cdn shi + feeds

blog/feeds.go

@@ -0,0 +1,115 @@
+package blog
+
+import (
+	"encoding/xml"
+	"fmt"
+	"strings"
+	"time"
+)
+
+const baseURL = "https://chaosmith.systems"
+
+func generateRSS(s *Store) string {
+	var b strings.Builder
+	b.WriteString(`<?xml version="1.0" encoding="UTF-8"?>` + "\n")
+	b.WriteString(`<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">` + "\n")
+	b.WriteString("  <channel>\n")
+	b.WriteString("    <title>Chaosmith Systems — Field Notes</title>\n")
+	b.WriteString("    <link>" + baseURL + "/blog/</link>\n")
+	b.WriteString("    <description>Engineering, music, and experiments from controlled chaos.</description>\n")
+	b.WriteString("    <language>en</language>\n")
+	b.WriteString(`    <atom:link href="` + baseURL + `/blog/feed.xml" rel="self" type="application/rss+xml"/>` + "\n")
+
+	for _, p := range s.All() {
+		b.WriteString("    <item>\n")
+		b.WriteString("      <title>" + xmlEscape(p.Title) + "</title>\n")
+		b.WriteString("      <link>" + baseURL + "/blog/posts/" + p.Slug + "</link>\n")
+		b.WriteString("      <guid>" + baseURL + "/blog/posts/" + p.Slug + "</guid>\n")
+		b.WriteString("      <description>" + xmlEscape(p.Description) + "</description>\n")
+		b.WriteString("      <pubDate>" + p.Date.Format(time.RFC1123Z) + "</pubDate>\n")
+		b.WriteString("    </item>\n")
+	}
+
+	b.WriteString("  </channel>\n</rss>\n")
+	return b.String()
+}
+
+func generateJSONFeed(s *Store) string {
+	var b strings.Builder
+	b.WriteString(`{"version":"https://jsonfeed.org/version/1.1","title":"Chaosmith Systems — Field Notes","home_page_url":"` + baseURL + `/blog/","feed_url":"` + baseURL + `/blog/feed.json","items":[`)
+
+	first := true
+	for _, p := range s.All() {
+		if !first {
+			b.WriteString(",")
+		}
+		first = false
+		b.WriteString(`{`)
+		b.WriteString(`"id":"` + baseURL + "/blog/posts/" + p.Slug + `",`)
+		b.WriteString(`"url":"` + baseURL + "/blog/posts/" + p.Slug + `",`)
+		b.WriteString(`"title":"` + jsonEscape(p.Title) + `",`)
+		b.WriteString(`"summary":"` + jsonEscape(p.Description) + `",`)
+		b.WriteString(`"date_published":"` + p.Date.Format(time.RFC3339) + `"`)
+		b.WriteString(`}`)
+	}
+
+	b.WriteString("]}")
+	return b.String()
+}
+
+func generateSitemap(s *Store) string {
+	var b strings.Builder
+	b.WriteString(`<?xml version="1.0" encoding="UTF-8"?>` + "\n")
+	b.WriteString(`<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">` + "\n")
+
+	// Static pages
+	b.WriteString("  <url>\n")
+	b.WriteString("    <loc>" + baseURL + "/</loc>\n")
+	b.WriteString("    <changefreq>monthly</changefreq>\n")
+	b.WriteString("  </url>\n")
+	b.WriteString("  <url>\n")
+	b.WriteString("    <loc>" + baseURL + "/blog/</loc>\n")
+	b.WriteString("    <changefreq>weekly</changefreq>\n")
+	b.WriteString("  </url>\n")
+
+	for _, p := range s.All() {
+		b.WriteString("  <url>\n")
+		b.WriteString("    <loc>" + baseURL + "/blog/posts/" + p.Slug + "</loc>\n")
+		b.WriteString("    <lastmod>" + p.Date.Format("2006-01-02") + "</lastmod>\n")
+		b.WriteString("  </url>\n")
+	}
+
+	b.WriteString("</urlset>\n")
+	return b.String()
+}
+
+func xmlEscape(s string) string {
+	var b strings.Builder
+	xml.EscapeText(&b, []byte(s))
+	return b.String()
+}
+
+func jsonEscape(s string) string {
+	var b strings.Builder
+	for _, r := range s {
+		switch r {
+		case '"':
+			b.WriteString(`\"`)
+		case '\\':
+			b.WriteString(`\\`)
+		case '\n':
+			b.WriteString(`\n`)
+		case '\r':
+			b.WriteString(`\r`)
+		case '\t':
+			b.WriteString(`\t`)
+		default:
+			if r < 0x20 {
+				b.WriteString(fmt.Sprintf(`\u%04x`, r))
+			} else {
+				b.WriteRune(r)
+			}
+		}
+	}
+	return b.String()
+}

blog/routes.go

@@ -34,13 +34,13 @@ const pageTpl = `<!DOCTYPE html>
   <meta property="og:site_name" content="Chaosmith Systems">
   <meta name="twitter:card" content="summary">
   {{end}}
-  <link rel="preconnect" href="https://fonts.googleapis.com">
+  <link rel="stylesheet" href="/src/thirdparty/fonts/fonts.css" media="print" onload="this.media='all'">
-  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+  <link rel="alternate" type="application/rss+xml" title="Chaosmith Systems — Field Notes" href="/blog/feed.xml">
-  <link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600&family=Inter:wght@300;500;700&display=swap" rel="stylesheet">
+  <link rel="alternate" type="application/feed+json" title="Chaosmith Systems — Field Notes (JSON)" href="/blog/feed.json">
-  <link rel="stylesheet" href="/src/thirdparty/highlight/default.min.css">
+  <link rel="stylesheet" href="/src/thirdparty/highlight/default.min.css" media="print" onload="this.media='all'">
-  <script src="/src/thirdparty/highlight/highlight.min.js"></script>
+  <script defer src="/src/thirdparty/highlight/highlight.min.js"></script>
-  <script src="/src/lang/ergon.js"></script>
+  <script defer src="/src/lang/ergon.js"></script>
-  <script src="/src/lang/archasm.js"></script>
+  <script defer src="/src/lang/archasm.js"></script>
   <style>
     :root {
       --bg: #05030a;
@@ -137,6 +137,7 @@ const pageTpl = `<!DOCTYPE html>
           <a href="/blog/">Blog</a>
         </nav>
       </div>
+      <a href="/blog/feed.xml" style="margin-left:auto; font-size:13px; text-transform:uppercase; letter-spacing:0.1em; color:var(--text-dim); text-decoration:none;">RSS</a>
     </header>
     <main>
       {{if .Post.HTML}}
@@ -166,7 +167,7 @@ const pageTpl = `<!DOCTYPE html>
       <span>Chaosmith Systems</span>
     </footer>
   </div>
-  <script>hljs.highlightAll();</script>
+  <script>window.addEventListener('DOMContentLoaded',()=>hljs.highlightAll());</script>
 </body>
 </html>`
 
@@ -248,6 +249,30 @@ func RegisterRoutes(mux *http.ServeMux, contentDir string) error {
 		})
 	})
 
+	// RSS feed
+	mux.HandleFunc("/blog/feed.xml", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/rss+xml; charset=utf-8")
+		w.Write([]byte(generateRSS(store)))
+	})
+
+	// JSON feed
+	mux.HandleFunc("/blog/feed.json", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/feed+json; charset=utf-8")
+		w.Write([]byte(generateJSONFeed(store)))
+	})
+
+	// Sitemap
+	mux.HandleFunc("/sitemap.xml", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/xml; charset=utf-8")
+		w.Write([]byte(generateSitemap(store)))
+	})
+
+	// robots.txt
+	mux.HandleFunc("/robots.txt", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "text/plain")
+		w.Write([]byte("User-agent: *\nAllow: /\n\nSitemap: https://chaosmith.systems/sitemap.xml\n"))
+	})
+
 	log.Printf("blog: loaded %d post(s) from %s, mounted at /blog/", store.Count(), contentDir)
 	return nil
 }

index.html

@@ -7,11 +7,7 @@
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <meta name="description"
     content="Chaosmith Systems - engineering, music, and experimental tools forged from controlled chaos.">
-  <link rel="preconnect" href="https://fonts.googleapis.com">
+  <link rel="stylesheet" href="/src/thirdparty/fonts/fonts.css" media="print" onload="this.media='all'">
-  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
-  <link
-    href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600&family=Inter:wght@300;500;700&display=swap"
-    rel="stylesheet">
   <style>
     :root {
       --bg: #05030a;
@@ -336,7 +332,7 @@
 </head>
 
 <body>
-  <script src="src/thirdparty/htmx.min.js.js"></script>
+  <script defer src="src/thirdparty/htmx.min.js.js"></script>
   <div class="noise"></div>
   <div class="wrap">
     <header>

main.go

@@ -1,12 +1,38 @@
 package main
 
 import (
+	"compress/gzip"
+	"io"
 	"log"
 	"net/http"
+	"strings"
 
 	"chaosmith-site/blog"
 )
 
+type gzipResponseWriter struct {
+	io.Writer
+	http.ResponseWriter
+}
+
+func (w gzipResponseWriter) Write(b []byte) (int, error) {
+	return w.Writer.Write(b)
+}
+
+func gzipHandler(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if !strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
+			next.ServeHTTP(w, r)
+			return
+		}
+		w.Header().Set("Content-Encoding", "gzip")
+		w.Header().Del("Content-Length")
+		gz := gzip.NewWriter(w)
+		defer gz.Close()
+		next.ServeHTTP(gzipResponseWriter{Writer: gz, ResponseWriter: w}, r)
+	})
+}
+
 func main() {
 	mux := http.NewServeMux()
 	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
@@ -23,5 +49,5 @@ func main() {
 	}
 
 	log.Println("listening on :8000")
-	http.ListenAndServe(":8000", mux)
+	http.ListenAndServe(":8000", gzipHandler(mux))
 }

src/thirdparty/fonts/fonts.css

@@ -0,0 +1,41 @@
+/* Self-hosted fonts — no CDN */
+
+@font-face {
+  font-family: 'Inter';
+  font-style: normal;
+  font-weight: 300;
+  font-display: swap;
+  src: url('/src/thirdparty/fonts/inter-300.woff2') format('woff2');
+}
+
+@font-face {
+  font-family: 'Inter';
+  font-style: normal;
+  font-weight: 500;
+  font-display: swap;
+  src: url('/src/thirdparty/fonts/inter-500.woff2') format('woff2');
+}
+
+@font-face {
+  font-family: 'Inter';
+  font-style: normal;
+  font-weight: 700;
+  font-display: swap;
+  src: url('/src/thirdparty/fonts/inter-700.woff2') format('woff2');
+}
+
+@font-face {
+  font-family: 'JetBrains Mono';
+  font-style: normal;
+  font-weight: 400;
+  font-display: swap;
+  src: url('/src/thirdparty/fonts/jetbrains-mono-400.woff2') format('woff2');
+}
+
+@font-face {
+  font-family: 'JetBrains Mono';
+  font-style: normal;
+  font-weight: 600;
+  font-display: swap;
+  src: url('/src/thirdparty/fonts/jetbrains-mono-600.woff2') format('woff2');
+}