@startuml Wifi_Info(id=wifi_info)

    participant OS                  as OS
    participant Script              as Script
    participant SW                  as SW
    participant UI                  as UI
    actor       USER                as US

    'Possible actions and interaction types
    ' External on CANBus
    ' TD -> SW: MSG: Message
    ' SW -> TD: MSG: Message

    ' Internal to the application
    ' XX -> YY: CMD: Command
    ' XX -> XX: ACT: Action

    ' External on OS/FS
    ' SW -> Script: ACT: Command
    ' Script -> OS: CMD: Command
    ' Script -> SW: MSG: Message
    ' OS -> Script: MSG: Message

    ' US -> UI: User actions are:
    '   ASK: Display a <message>
    '   ENT: User enters a value or string
    '   TCH: User touches a button (RadioButton, CheckBox, ...)
    '   SCL: User scrolls a flip-able area

    == Wi-Fi Information ==
    group Wi-Fi Information
        SW -> SW: ACT: Request connected Wi-Fi information
        SW -> Script: ACT: wifi_info.sh ( )
        activate Script
            Script -> OS: CMD:                                                          \
                \n\t SSID   : sudo nmcli -t -f NAME connection show --active            \
                \n\t IPMASK : sudo nmcli -t -g IP4.ADDRESS device show wlan0            \
                \n\t ADDR   : echo $IPMASK | sed 's/\/.*//g'                            \
                \n\t MASK   : sudo ipcalc -m "$(echo $IPMASK)" | sed "s/NETMASK=//g")   \
                \n\t GATEWAY: sudo nmcli -t -g IP4.GATEWAY device show wlan0)"          \
                \n\t DNS    : sudo nmcli -t -g IP4.DNS device show wlan0 | sed "s/ //g" | sed 's/|/,/g'
            OS -> Script: MSG: Connection Information
            Script -> SW: MSG:      \
                \n - echo <         \
                    \n\t SSID       \
                    \n\t ADDR       \
                    \n\t MASK       \
                    \n\t GATEWAY    \
                    \n\t DNS        \
                \n >                \
                \n - exit #
        deactivate Script
        alt successful ( exit == 0 )
            SW -> UI: CMD: Update Items
        else failed
            SW -> UI: ACT: Empty Items
            UI -> US: ACT: Notify user
        end
    end
@enduml