add application number

internal/services/story_service/models/application_dto.go

@@ -1,11 +1,34 @@
 package models
 
+import "fmt"
+
 type Application struct {
-	Name string `json:"name"`
+	Name   string `json:"name"`
+	Number string `json:"-"`
 }
 
-func NewApplication(name string) *Application {
-	return &Application{
+func NewApplication(
+	name string,
+	opts ...ApplicationOpt,
+) *Application {
+	application := &Application{
 		Name: name,
 	}
+	for _, opt := range opts {
+		opt(application)
+	}
+	return application
+}
+
+type ApplicationOpt func(application *Application) error
+
+func WithApplicationNumber(number int) ApplicationOpt {
+	return func(application *Application) error {
+		application.SetNumber(number)
+		return nil
+	}
+}
+
+func (a *Application) SetNumber(number int) {
+	a.Number = fmt.Sprintf("%d", number)
 }