@startuml Pre-Treatment

    participant TD                  as TD
    participant SW                  as SW
    participant UI                  as UI
    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
    ' US -> UI: User actions are:
    '   ENT: User enters a value or string
    '   TCH: User touches a button (RadioButton, CheckBox, ...)
    '   SET: User sets/slides a slider
    '   SCL: User scrolls a flipable area
    '
    'Messages conventions:
    '[x<hex message ID> <Req/Rsp/Dat>  \n  <P1>,<P..>]
    '[x<hex message ID> <Req/Rsp/Dat>  \n  <P1>,# certain amount of parameters according to the content]
    '[x<hex message ID> <Req/Rsp/Dat>  \n  <P1>,X The rest of the parameters do not matter.]

    == Pre-Treatment  ==
    US -> UI: TCH: Create Treatment Button
    UI -> SW: ACT: Create Treatment
    SW -> TD: MSG: [x45: 1] Req \n Initiate Treatment
    alt Accepted: Initiate Treatment
        TD -> SW: MSG: [x46: 1,X] Rsp \n Initiate Treatment
        TD -> SW: MSG: [x12: 4,1] Dat \n OpMode - Pre-Treatment MOde
        SW -> UI: CMD: CPre-Treatment Screen

    alt isStandardMode?
        UI -> US: ACT: Show Concentrates page
        US -> UI: TCH: Any instruction step
        UI -> UI: ACT: Highlight instruction step \
                    \n\tShow image for instruction step
        US -> UI: Act: Press Next
        alt #CEFAD0 Next
            UI -> UI: ACT: Go to Installation Page
        end
    end
    UI -> US: ACT: Show Installation page
    US -> UI: TCH: Any instruction step
    UI -> UI: ACT: Highlight instruction step \
                \n\tShow image for instruction step
    alt #CEFAD0 Auto-Load
        US -> UI: TCH: Auto-Load Button
        UI -> SW: ACT: Auto-Load Request
        SW -> TD: MSG: [x92: 0] Request
        TD -> SW: MSG: [x93: #2]  \n\tResponse:       \
                    \n\t(U32)  mAccepted\
                    \n\t(U32)  mReason 
        SW -> UI: CMD: Rejection Reason 
        alt #CAE9F5 Accepted: AutoLoad
            UI -> UI: ACT: Go to Self-Tests  Page
        else #Pink Rejected 
            UI -> UI: ACT: Stay on page 
            UI -> US: ACT: Display rejection reason
        end
    else #D0D9CD Back
        US -> UI: TCH: Back Button
        UI -> SW: ACT: Back
        SW -> TD: MSG: [x45: 0] Req \n Initiate Treatment Cancel
        TD -> SW: MSG: [x12: 3,1] Dat \n OpMode - Standby
        SW -> UI: CMD: MainHome Screen
    end
    UI -> US: ACT: Show Self-Tests page
    UI -> SW: ACT: Request start Self Tests
    SW -> TD: ACT: Request start Self Tests
    TD -> SW: ACT: Response Self Tests State
    SW -> UI: ACT: Response Self Tests State
    UI -> US: ACT: Show Self Tests State
    US -> UI: Act: Press Next
    alt #CEFAD0 Next
        UI -> UI: ACT: Go to Saline Page
    end
    UI -> US: ACT: Show Saline page
    US -> UI: TCH: Any instruction step
    UI -> UI: ACT: Highlight instruction step \
                \n\tShow image for instruction step
    US -> UI: Act: Press Next
    alt #CEFAD0 Next
        UI -> UI: ACT: Go to Prime Page
    end        
        UI -> US: ACT: Show Prime page
    UI -> SW: ACT: Request start Prime
    SW -> TD: ACT: Request start Prime
    TD -> SW: ACT: Response Prime State
    SW -> UI: ACT: Response Prime State
    UI -> US: ACT: Show Prime State
    US -> UI: Act: Press Next
    alt #CEFAD0 Next
        alt #CAE9F5 Is Water Sample Featured
            UI -> UI: ACT: Go to Water Sample 
            UI -> US: ACT: Show Water Sample 
            US -> UI: TCH: Select pass or fail
            US -> UI: Act: Press Next
            alt #CEFAD0 Next Button
                UI -> UI: ACT: Go to Create Rx
            end
        else 
            UI -> UI: ACT: Go to Create Rx
        end
    end

    UI -> US: ACT: Show Create Rx
    !include common_puml/CreateRxCommon.puml
    UI -> UI: ACT: Go to UF/ Dialysate 
    UI -> US: ACT: Show UF/ Dialysate
    US -> UI: Act: Press Next
    alt #CEFAD0 Next
        UI -> UI: ACT: Go to Connect Page
    end        
    UI -> UI: ACT: Go to Connect 
    UI -> US: ACT: Show Connect
        UI -> UI: ACT: Highlight instruction step \
                \n\tShow image for instruction step
    US -> UI: Act: Press Start

    UI -> SW: ACT: Pre-Treatment Adjustment Start Treatment
    SW -> TD: MSD: [xA1: 0] Request \n Pre-Treatment Adjustment Start Treatment
    alt #CEFAD0 Accepted
        TD -> SW: MSG: [xA2: 2] \n\tResponse:       \
            \n\t(U32)  mAccepted        \
            \n\t(U32)  mReason 
        SW -> UI: CMD: Treatment Stack
        UI -> US: Act: Show Main Treatment
    end
@enduml