feat: better caching headers for images

internal/handlers/restimage/conroller.go

@@ -6,7 +6,7 @@ import (
 	"net/http"
 
 	"git.schreifuchs.ch/schreifuchs/schreifuchs.ch/internal/components/images"
-	"git.schreifuchs.ch/schreifuchs/schreifuchs.ch/internal/handlers/restutil"
+	"git.schreifuchs.ch/schreifuchs/schreifuchs.ch/internal/handlers/rest"
 )
 
 func (h *Handler) getImage(w http.ResponseWriter, r *http.Request) {
@@ -14,20 +14,20 @@ func (h *Handler) getImage(w http.ResponseWriter, r *http.Request) {
 
 	var err error
 	options := images.Options{}
-	options.Height, err = restutil.IntParam(r, "h")
+	options.Height, err = rest.IntParam(r, "h")
 	if err != nil {
-		restutil.SendErr(w, err)
+		rest.SendErr(w, err)
 		return
 	}
-	options.Width, err = restutil.IntParam(r, "w")
+	options.Width, err = rest.IntParam(r, "w")
 	if err != nil {
-		restutil.SendErr(w, err)
+		rest.SendErr(w, err)
 		return
 	}
 
-	options.Quality, err = restutil.IntParam(r, "q")
+	options.Quality, err = rest.IntParam(r, "q")
 	if err != nil {
-		restutil.SendErr(w, err)
+		rest.SendErr(w, err)
 		return
 	}
 

internal/handlers/restimage/resource.go

@@ -9,12 +9,15 @@ import (
 )
 
 type Handler struct {
+	http.Handler
 	img imageService
 }
 
-func New(mux *http.ServeMux, srv imageService) *Handler {
+func New(srv imageService) *Handler {
+	mux := http.NewServeMux()
 	h := &Handler{
-		img: srv,
+		Handler: mux,
+		img:     srv,
 	}
 
 	mux.HandleFunc("GET /images/{uid}", h.getImage)