Add some requesters

internal/handler/struct.go

@@ -0,0 +1,22 @@
+package handler
+
+import "net/http"
+
+// NotFoundMiddleware Middleware to handle 404 errors
+type notFoundMiddleware struct {
+	handler http.Handler
+}
+
+// ErrorPageData Data model for error page template
+type errorPageData struct {
+	StatusCode int
+	Title      string
+	Message    string
+}
+
+// IndexPageData Data model for index page template
+type indexPageData struct {
+	StatusCode int
+	Title      string
+	I18n       string
+}