From d144f5d14d168f7666025d77d8a712fd3c993b72 Mon Sep 17 00:00:00 2001
From: fiatjaf <fiatjaf@gmail.com>
Date: Thu, 11 May 2023 17:41:49 -0300
Subject: [PATCH] add cache headers.

---
 image.go  | 2 ++
 proxy.go  | 1 +
 render.go | 1 +
 3 files changed, 4 insertions(+)

diff --git a/image.go b/image.go
index a4e552d..12f4961 100644
--- a/image.go
+++ b/image.go
@@ -32,6 +32,8 @@ func generate(w http.ResponseWriter, r *http.Request) {
 	}
 
 	w.Header().Set("Content-Type", "image/png")
+	w.Header().Set("Cache-Control", "max-age=604800")
+
 	if err := png.Encode(w, img); err != nil {
 		log.Printf("error encoding image: %s", err)
 		http.Error(w, "error encoding image!", 500)
diff --git a/proxy.go b/proxy.go
index 475f4a4..251bb15 100644
--- a/proxy.go
+++ b/proxy.go
@@ -9,6 +9,7 @@ import (
 
 func proxy(w http.ResponseWriter, r *http.Request) {
 	fmt.Println(r.URL.Path, ":~", r.Header.Get("user-agent"))
+	w.Header().Set("Cache-Control", "max-age=604800")
 
 	src := r.URL.Query().Get("src")
 	urlParsed, err := url.Parse(src)
diff --git a/render.go b/render.go
index d2811f5..c962784 100644
--- a/render.go
+++ b/render.go
@@ -21,6 +21,7 @@ var tmpl = template.Must(template.New("event").Parse(eventHTML))
 func render(w http.ResponseWriter, r *http.Request) {
 	fmt.Println(r.URL.Path, ":~", r.Header.Get("user-agent"))
 	w.Header().Set("Content-Type", "text/html")
+	w.Header().Set("Cache-Control", "max-age=604800")
 
 	code := r.URL.Path[1:]
 	if strings.HasPrefix(code, "e/") {