@startuml CreateRx

    participant TD                  as TD
    participant SW                  as SW
    participant UI                  as UI
    control     Wait_Retry          as Wait_Retry
    actor       USER                as US
    collections Pre_Tx              as Pre_Tx

    '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.]

    == Normal Bootup ==
    TD -> SW: MSG: [x12: 3,1] \n OpMode - Standby Dat
    SW -> UI: CMD: MainHome Screen
    UI ->o Wait_Retry: ⟲: MainHome Screen

    == Create Rx - Simplified ==
    TD -> UI: [x12] OpMode - Standby
    UI -> TD: [x45] Create Treatment Req
    TD -> UI: [x46] Create Treatment Rsp
    UI -> TD: [x3F] Prameters Validation Req
    TD -> UI: [x40] Prameters Validation Rsp
    UI -> TD: [x44] Prameters Confirmation Req
    TD -> UI: [x12] OpMode - Pre-Tx

    == Create Rx - Detailed ==
    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 - Parameters
        SW -> UI: CMD: Create Rx Screen
        UI ->o Wait_Retry: ⟲: Create Rx Screen
        US -> UI: ENT: Patient ID Text
        US -> UI: TCH: Touch each parameter to set value
        alt Validate
            US -> UI: TCH: Validate Button
            UI -> SW: ACT: Prescription Parameters
            SW -> TD: MSG: [x3F: #(all the Rx Params)] Req \n Prescription Parameters: Validation
            alt Accepted
                TD -> SW: MSG: [x40: 1,X] Rsp \n Prescription Parameters: Validation
                SW -> UI: ACT: Notify UI: Parameters validation \n\t(Generate QR Code)
                UI -> UI: ACT: Lock all editable fields\n\tShow QR Code\n\tShow Confirm Button
                alt Confirm
                    US -> UI: TCH: Confirm Button
                    UI -> SW: ACT: Prescription Parameters Confimation
                    SW -> TD: MSD: [x44: 1] Req \n Prescription Parameters Confimation
                    alt Accepted
                        TD -> SW: MSG: [x12: 4,1] Dat \n OpMode - Pre-Treatment
                        SW -> UI: CMD: Pre-Treatment Stack
                        UI -[#Green]>o Pre_Tx
                    end
                end
            else #Pink
                TD -> SW: MSG: [x40: 0,#RR] Rsp \n Prescription Parameters: Validation
                SW -> UI: CMD: Highlight Rejected Parameters
                UI ->o Wait_Retry: ⟲: Prescription Parameters Screen
            end
        end
    else #Pink Rejected x46: Initiate Treatment
        TD -> SW: MSG: [x46: 0,RR]
        SW -> UI: CMD: Rejection Reason (RR) Notification
        UI ->o Wait_Retry: ⟲: MainHome Screen
    end
    alt Back
        US -> UI: TCH: Back Button
        UI -> SW: ACT: Back
        alt Is Validated?
            SW -> TD: MSG: [x44: 0] Req \n Prescription Parameters Confirmations: Back
            SW -> UI: ACT: Set to not validated
            UI -> UI: ACT: Enable Fields
            UI ->o Wait_Retry: ⟲: Create Rx Screen
        else
            UI -> UI: ACT: Clear Create Rx Screen
            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
            UI ->o Wait_Retry: ⟲: MainHome Screen
        end
    end
@enduml