web ui: basic logic

ports/rest/ui.go

@@ -0,0 +1,38 @@
+package rest
+
+import (
+	"io/fs"
+	"net/http"
+	"strings"
+
+	"github.com/derfenix/webarchive/config"
+	"github.com/derfenix/webarchive/ui"
+)
+
+func NewUI(cfg config.UI) *UI {
+	return &UI{prefix: cfg.Prefix}
+}
+
+type UI struct {
+	prefix string
+}
+
+func (u *UI) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	serveRoot, err := fs.Sub(ui.StaticFiles, "static")
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	if strings.HasPrefix(r.URL.Path, u.prefix) {
+		r.URL.Path = "/" + strings.TrimPrefix(r.URL.Path, u.prefix)
+	}
+
+	r.URL.Path = strings.TrimPrefix(r.URL.Path, "/static")
+
+	http.FileServer(http.FS(serveRoot)).ServeHTTP(w, r)
+}
+
+func (u *UI) IsUIRequest(r *http.Request) bool {
+	return r.URL.Path == u.prefix || strings.HasPrefix(r.URL.Path, "/static/")
+}