feat: initial commit

internal/http/handler/webui/handler.go

@@ -0,0 +1,41 @@
+package webui
+
+import (
+	"net/http"
+	"strings"
+)
+
+type Handler struct {
+	mux *http.ServeMux
+}
+
+// ServeHTTP implements http.Handler.
+func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	h.mux.ServeHTTP(w, r)
+}
+
+func NewHandler(funcs ...OptionFunc) *Handler {
+	opts := NewOptions(funcs...)
+
+	h := &Handler{
+		mux: http.NewServeMux(),
+	}
+
+	for mountpoint, handler := range opts.Mounts {
+		h.mount(mountpoint, handler)
+	}
+
+	return h
+}
+
+func (h *Handler) mount(prefix string, handler http.Handler) {
+	trimmed := strings.TrimSuffix(prefix, "/")
+
+	if len(trimmed) > 0 {
+		h.mux.Handle(prefix, http.StripPrefix(trimmed, handler))
+	} else {
+		h.mux.Handle(prefix, handler)
+	}
+}
+
+var _ http.Handler = &Handler{}