@startuml Wifi

    participant TD                  as TD
    participant UI                  as UI
    participant SW                  as SW
    participant Script              as Script 
    participant Operating_System    as OS
    control     Wait_Retry          as Wait_Retry
    actor       USER                as US

    'Possible actions and interaction tuypes
    ' TD -> SW: MSG: Message
    ' SW -> TD: MSG: Message
    ' SW -> UI: CMD: command
    ' UI -> SW: ACT: Action
    ' SW -> Script: RUN: Run script
    ' Script -> OS: CMD: command
    ' Script -> SW: MSG: Message

    ' US -> UI: User actions are:
    '   ENT: User enters a value or string
    '   TCH: User touches a button (RadioButton, CheckBox, ...)
    '   SCL: User scrolls a flipable area

    == Normal Bootup ==
    TD -> SW: MSG: [x12: 3,1] \n OpMode - Standby Dat
    SW -> UI: CMD: MainHome Screen
    UI ->o Wait_Retry: ⟲: MainHome Screen
    == Wi-Fi Settings Page ==
    US -> UI: TCH: Settings Button
    UI -> SW: CMD: Device Settings Screen
    US -> UI: TCH: Wi-Fi Button
    UI -> SW: CMD: Wi-Fi Settings Screen
    SW -> Script: RUN: wifi_scan.sh
    activate Script
    Script -> OS: CMD: 'nmcli dev wifi list'
    Script -> SW: MSG: List of available Wi-Fi networks
    deactivate Script
    SW -> UI: ACT: Process and display available networks
    UI ->o Wait_Retry: ⟲: Wi-Fi Screen
        alt Connect Wi-Fi
        US -> UI: SCL: Scroll through available networks
        US -> UI: TCH: Select desired network
        US -> UI: ENT: Enter password 
            alt Confirm
            US -> UI: TCH: Confirm Button
            UI -> SW: ACT: Connect Wi-Fi by SSID and password
            SW -> Script: RUN: wifi_connect.sh
            activate Script
            Script -> OS: CMD: 'nmcli dev wifi connect <SSID> password <password>'
            deactivate Script
            SW -> UI: CMD: Wi-Fi Settings Screen
            SW -> Script: RUN: wifi_scan.sh
            activate Script
            Script -> OS: CMD: 'nmcli dev wifi list'
            Script --> SW: MSG: Provide list of available Wi-Fi networks
            deactivate Script
                alt Connection Successful
                SW -> Script: RUN: wifi_info.sh
                activate Script
                Script -> OS: CMD: 'nmcli commands to retrieve desired parameters'
                Script --> SW: MSG: Provide Wi-Fi info <SSID,IP,SUBNET_MASK,GATEWAY,DNS>
                deactivate Script
                SW -> UI: CMD: Update all UI fields (IP, Gateway, Subnet, DNS, SSID)
                end
            else Back
            US -> UI: TCH: Back Button
            UI ->o Wait_Retry: ⟲: Wi-Fi Screen
            end
        else Disconnect Wi-Fi
        US -> UI: TCH: Select connected network
            alt Confirm
            US -> UI: TCH: Confirm Button
            UI -> SW: ACT: Disconnect Wi-Fi by SSID
            SW -> Script: RUN: wifi_disconnect.sh
            activate Script
            Script -> OS: CMD: 'nmcli nmcli connection delete <SSID>'
            deactivate Script
            SW -> UI: CMD: Clear all UI fields (IP, Gateway, Subnet, DNS, SSID)
            else Back
            US -> UI: TCH: Back Button
            UI ->o Wait_Retry: ⟲: Wi-Fi Screen
            end
        end
@enduml