I think we can use messages and do all the tracking in the container model. That way we don't need to pass the analytics tracker into the nested models, and we can keep the tracking calls closer together.

For example,

• when we start the tea program in quickstart.go, it calls the createFlagModel#Init()
• createFlagModel#Init() sends a createFlagStartedMsg with time.Now()
• container receives the message in Update
• container calls SendSetupStartedEvent() with its current step (1)
• when subsequent nested models are initialized, the send their own {model}StartedMsg
• the container receives those messages and calls SendSetupStartedEvent() as needed

It would be helpful to write up a plan for the message flow before changing the code to prevent more back-and-forth.

SendSetupStartedEvent

• when we start the tea program in quickstart.go, it calls the createFlagModel#Init()
• createFlagModel#Init() sends a createFlagStartedMsg with time.Now()
• container receives the message in Update
• container calls SendSetupStartedEvent() with its current step (1)
• when subsequent nested models are initialized, the send their own {model}StartedMsg
• the container receives those messages and calls SendSetupStartedEvent() as needed

SendSetupSDKSelectedEvent

• the container receives choseSDKMsg with chosen SDK of type string. Then container calls SendSetupSDKSelectedEvent with the chosen SDK.

SendSetupFlagToggledEvent

• the container receives toggledFlagMsg with endTime of type time.Time and count of type int. Then container calls SendSetupFlagToggledEvent.

Thinking about it more, the container shouldn't directly call the tracker but should send a command that does it, similar to the toggleFlag command. Something like

type eventTrackedMsg struct{}

func trackSetupStartedEvent(tracker analytics.Tracker, accessToken, baseURI string, optOut bool) tea.Cmd {
	return func() tea.Msg {
		tracker.SendWhateverEvent(accessToken, baseURI, optOut, time.Now())

		return eventTrackedMsg{}
	}
}

The container could use tea.Batch() or tea.Sequence() when setting cmd to get the current one plus the one to track the event.

Closing to break into smaller PRS #215