upd(sam): print route debug in main

cmd/sam/routes.go

@@ -1,13 +1,17 @@
 package main
 
 import (
+	"fmt"
+	"reflect"
+	"runtime"
+
 	"github.com/go-chi/chi"
 	"github.com/go-chi/chi/middleware"
 	"github.com/go-chi/cors"
 )
 
 // MountRoutes will register API routes
-func MountRoutes(r chi.Router, opts *RouteOptions, mountRoutes func(r chi.Router)) {
+func MountRoutes(r chi.Router, opts *RouteOptions, mountRoutes ...func(r chi.Router)) {
 	// CORS for local development...
 	cors := cors.New(cors.Options{
 		AllowedOrigins:   []string{"*"},
@@ -22,5 +26,23 @@ func MountRoutes(r chi.Router, opts *RouteOptions, mountRoutes func(r chi.Router
 		r.Use(middleware.Logger)
 	}
 
-	mountRoutes(r)
+	for _, mount := range mountRoutes {
+		mount(r)
+	}
+
+	var printRoutes func(chi.Routes, string, string)
+	printRoutes = func(r chi.Routes, indent string, prefix string) {
+		routes := r.Routes()
+		for _, route := range routes {
+			if route.SubRoutes != nil && len(route.SubRoutes.Routes()) > 0 {
+				fmt.Printf(indent+"%s - with %d handlers, %d subroutes\n", route.Pattern, len(route.Handlers), len(route.SubRoutes.Routes()))
+				printRoutes(route.SubRoutes, indent+"\t", prefix+route.Pattern[:len(route.Pattern)-2])
+			} else {
+				for key, fn := range route.Handlers {
+					fmt.Printf("%s%s\t%s -> %s\n", indent, key, prefix+route.Pattern, runtime.FuncForPC(reflect.ValueOf(fn).Pointer()).Name())
+				}
+			}
+		}
+	}
+	printRoutes(r, "", "")
 }