Исходники и презентации

lessons/interfaces/consumer_interface/service/message_sender.go

@@ -0,0 +1,28 @@
+package service
+
+import "golang_course/lessons/interfaces/consumer_interface/entity"
+
+type clientGetter interface {
+	GetClient(int) (entity.Client, error)
+}
+
+type MessageSender struct {
+	repository clientGetter
+}
+
+func NewMessageSender(repository clientGetter) MessageSender {
+	return MessageSender{
+		repository: repository,
+	}
+}
+
+func (s *MessageSender) SendMessage(userId int, message string) error {
+	_, err := s.repository.GetClient(userId)
+	if err != nil {
+		return err
+	}
+
+	// send message to client
+
+	return nil
+}