SequenceDiagram.puml

@startuml SequenceDiagram

actor User
participant ServerController
participant MachineTrackerAccessRemote

box "REST API" #LightBlue
    participant MachineTrackerController
    participant MachineTrackerService
    participant "Repository / Persistence" as Repo
end box

User -> ServerController: Opens the app

ServerController -> MachineTrackerAccessRemote: handleSubmission()

MachineTrackerAccessRemote -> MachineTrackerController: Send http request to REST API

MachineTrackerController --> MachineTrackerService: getVendMachList()

MachineTrackerService -> Repo: getVendmachtrack()

Repo --> MachineTrackerService: returns a MachineTracker object

MachineTrackerService --> MachineTrackerController: HashMap<Integer, String> vendingMachineData

MachineTrackerController -> MachineTrackerAccessRemote: returns a http respons with json data

MachineTrackerAccessRemote -> ServerController: HashMap<Integer, String> vendingMachineData

ServerController -> User: visualization of the vending machines

@enduml