refactor: flash messages framework (resolve #446)

routes/utils/messages.go

@@ -0,0 +1,33 @@
+package utils
+
+import (
+	conf "github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models/view"
+	"net/http"
+)
+
+func SetError(r *http.Request, w http.ResponseWriter, message string) {
+	setMessage(r, w, message, "error")
+}
+
+func SetSuccess(r *http.Request, w http.ResponseWriter, message string) {
+	setMessage(r, w, message, "success")
+}
+
+func WithSessionMessages[T view.BasicViewModel](vm T, r *http.Request, w http.ResponseWriter) T {
+	session, _ := conf.GetSessionStore().Get(r, conf.SessionKeyDefault)
+	if errors := session.Flashes("error"); len(errors) > 0 {
+		vm.SetError(errors[0].(string))
+	}
+	if successes := session.Flashes("success"); len(successes) > 0 {
+		vm.SetSuccess(successes[0].(string))
+	}
+	session.Save(r, w)
+	return vm
+}
+
+func setMessage(r *http.Request, w http.ResponseWriter, message, key string) {
+	session, _ := conf.GetSessionStore().Get(r, conf.SessionKeyDefault)
+	session.AddFlash(message, key)
+	session.Save(r, w)
+}