' SPDX-License-Identifier: AGPL-3.0-or-later
' SPDX-FileCopyrightText: 2023 swt23w23
@startuml

participant Customer
participant OrderController
participant Cart
participant OrderManagement
participant Spring

Customer --> OrderController : event(Model model)
activate Customer
activate OrderController
OrderController --> Cart : iterator()
activate Cart
OrderController <-- Cart : Iterator<CartItem>
deactivate Cart
OrderController --> Spring : model.addAttribute()
activate Spring
OrderController <-- Spring : Model
deactivate Spring
Customer <-- OrderController : "event"
deactivate OrderController
Customer --> OrderController : addProduct()
activate OrderController
OrderController --> Cart : addOrUpdateItem()
activate Cart
OrderController <-- Cart
deactivate Cart
OrderController --> Spring : model.addAttribute()
activate Spring
OrderController <-- Spring : Model
deactivate Spring
Customer <-- OrderController : "redirect:/event"
deactivate OrderController
deactivate Customer

@enduml