property pInvitationData, pState

on construct me 
  pState = #disabled
  pInvitationData = [:]
  registerMessage(#userlogin, me.getID(), #Init)
  registerMessage(#showInvitation, me.getID(), #setInvitation)
  return TRUE
end

on deconstruct me 
  unregisterMessage(#userlogin, me.getID(), #Init)
  unregisterMessage(#showInvitation, me.getID(), #setInvitation)
  return TRUE
end

on setInvitation me, tInvitationData 
  if tInvitationData.ilk <> #propList then
    tInvitationData = [:]
  end if
  pInvitationData = tInvitationData
  me.setState(#ready)
end

on getInvitation me 
  return(pInvitationData)
end

on cancelInvitation me 
  pInvitationData = [:]
  me.setState(#waiting)
end

on getState me 
  return(pState)
end

on setState me, tstate 
  if (tstate = pState) then
    return TRUE
  end if
  pState = tstate
  me.getInterface().update()
end

on Init me 
  if connectionExists(getVariable("connection.info.id")) then
    getConnection(getVariable("connection.info.id")).send("MSG_INIT_TUTORSERVICE")
  end if
end

on startWaiting me 
  if connectionExists(getVariable("connection.info.id")) then
    getConnection(getVariable("connection.info.id")).send("MSG_WAIT_FOR_TUTOR_INVITATIONS")
  end if
  me.setState(#waiting)
end

on cancelWaiting me 
  if connectionExists(getVariable("connection.info.id")) then
    getConnection(getVariable("connection.info.id")).send("MSG_CANCEL_WAIT_FOR_TUTOR_INVITATIONS")
  end if
  me.setState(#enabled)
end

on acceptInvitation me 
  if ilk(pInvitationData) <> #propList then
    return FALSE
  end if
  tSenderId = pInvitationData.getaProp(#userID)
  if voidp(tSenderId) then
    return FALSE
  end if
  if connectionExists(getVariable("connection.info.id")) then
    getConnection(getVariable("connection.info.id")).send("MSG_ACCEPT_TUTOR_INVITATION", [#string:tSenderId])
  end if
  me.setState(#enabled)
end

on rejectInvitation me 
  tSenderId = pInvitationData.getaProp(#userID)
  if voidp(tSenderId) then
    return FALSE
  end if
  if connectionExists(getVariable("connection.info.id")) then
    getConnection(getVariable("connection.info.id")).send("MSG_REJECT_TUTOR_INVITATION", [#string:tSenderId])
  end if
  me.setState(#enabled)
end