refactor

ngin/internal/router/router.go

@@ -0,0 +1,24 @@
+package router
+
+import (
+	"errors"
+	"net/http"
+)
+
+var (
+	ErrInvalidMethod = errors.New("not a valid http method")
+	ErrInvalidPath   = errors.New("path must begin with '/'")
+)
+
+type (
+	Route struct {
+		Path    string
+		Handler http.HandlerFunc
+	}
+
+	Router interface {
+		http.Handler
+		Handle(method string, path string, handler http.Handler) error
+		SetNotFoundHandler(handler http.Handler)
+	}
+)