Merge pull request 'handler: add single page application handler' (#176) from spa-handler into master

Reviewed-on: #176

handler/spa/spa.go

@@ -0,0 +1,19 @@
+package spa
+
+import (
+	"io/fs"
+	"net/http"
+	"strings"
+)
+
+// Handler serve files from dir and redirect to index if file not exists
+var Handler = func(prefix string, dir fs.FS) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		f := http.StripPrefix(prefix, http.FileServer(http.FS(dir)))
+		if _, err := fs.Stat(dir, strings.TrimPrefix(r.RequestURI, prefix)); err != nil {
+			r.RequestURI = prefix
+			r.URL.Path = prefix
+		}
+		f.ServeHTTP(w, r)
+	}
+}

http.go

@@ -122,12 +122,22 @@ func (h *Server) Init(opts ...options.Option) error {
 
 func (h *Server) Handle(handler interface{}, opts ...options.Option) error {
 	options := server.NewHandleOptions(opts...)
+	var endpointMetadata []EndpointMetadata
+
+	if v, ok := options.Context.Value(handlerEndpointsKey{}).([]EndpointMetadata); ok {
+		endpointMetadata = v
+	}
 
 	// passed unknown handler
 	hdlr, ok := handler.(*httpHandler)
 	if !ok {
 		h.Lock()
-		h.hd = handler
+		if h.handlers == nil {
+			h.handlers = make(map[string]interface{})
+		}
+		for _, v := range endpointMetadata {
+			h.handlers[v.Name] = h.newHTTPHandler(handler, opts...)
+		}
 		h.Unlock()
 		return nil
 	}
@@ -140,16 +150,6 @@ func (h *Server) Handle(handler interface{}, opts ...options.Option) error {
 		return nil
 	}
 
-	// passed micro compat handler
-	h.Lock()
-	if h.handlers == nil {
-		h.handlers = make(map[string]interface{})
-	}
-	for k := range options.Metadata {
-		h.handlers[k] = handler
-	}
-	h.Unlock()
-
 	return nil
 }