@startuml uc-06-manage-equipment
autonumber
title UC-06 Manage Equipment (design sequence)
actor Player
participant "EquipmentBoundary\n«/api/characters/{id}/{equip,unequip}»" as boundary <<boundary>>
participant "EquipmentService\nsb-core::services::{equip,unequip}" as control <<control>>
participant "Equipment/Inventory\nCharacter.equipment/.inventory" as entity <<entity>>

== Equip ==
Player -> boundary : POST equip item id
boundary -> control : equip_item(character, item)
alt item not in inventory
  control --> boundary : 400 (DomainError)
else ok
  control -> entity : inventory -> slot\n(previous item returns to inventory)
  control --> boundary : character
  boundary --> Player : updated character
end

== Unequip ==
Player -> boundary : POST unequip slot
boundary -> control : unequip_item(character, slot)
alt slot empty
  control --> boundary : 400 (DomainError)
else ok
  control -> entity : slot -> inventory
  control --> boundary : character
  boundary --> Player : updated character
end
@enduml