feat(event): add user modification event

pkg/event-listener/user-modification.go

@@ -0,0 +1,27 @@
+package listener
+
+import (
+	"fmt"
+
+	"github.com/ncarlier/readflow/pkg/event"
+	eventbroker "github.com/ncarlier/readflow/pkg/event-broker"
+	"github.com/ncarlier/readflow/pkg/model"
+	"github.com/rs/zerolog/log"
+)
+
+func init() {
+	errorMsg := "unable to send user modification"
+	event.Subscribe(event.UpdateUser, func(payload ...interface{}) {
+		if user, ok := payload[0].(model.User); ok {
+			broker := eventbroker.Lookup()
+			if broker == nil {
+				log.Debug().Err(fmt.Errorf("event broker not configured")).Uint("uid", *user.ID).Msg(errorMsg)
+				return
+			}
+			evt := eventbroker.NewUserEvent(user, event.UpdateUser)
+			if err := broker.Send(evt.Buffer()); err != nil {
+				log.Error().Err(err).Uint("uid", *user.ID).Msg(errorMsg)
+			}
+		}
+	})
+}