Cow &

SketchSystems.spec

Cow &
  Tracking
    Untracked
      first-session-started -> Pending
    Pending
      session-activated -> Tracked
    Tracked&
      Temperature
        Normal
          fever-detected -> Fever
          hypothermia-detected -> Hypothermia
        Fever
          normal-temperature-detected -> Normal
        Hypothermia
          normal-temperature-detected -> Normal
      
  Reproduction
    # Not reproductive yet
    Calf
      timer - 1y from birth -> Reproductive
    Reproductive
      Pre-estrus
        timer 10d -> Estrus
      Estrus
        timer 
      Post-estrus
      Inseminated
      Pregnant
      Post-partum
      Lactation
    Infertile
      
  
  

SketchSystems_prototype.js

Array.prototype.unique = function () {
  return [...new Set(this)]
} 

function render(model){
  return (
    <p> Tags:&nbsp;
      {model.active_states
       .flatMap(parents)
       .unique()
       .flatMap(s => tags(s.name))
       .filter(t => t)
       .join(" | ")
      }
    </p>
  );
}


function parents(state) {
  return state.parent ? [ state, ...parents(state.parent) ] : [ state ]
}

// tags are not states. tags are just outputs of states.
function tags(state) {
  return {
    Pending: ["pending"],
    Tracked: ["tracked"],
    Pregnant: ["pregnant"],
    Due: ["due"],
    Fever: ["fever"],
    Hypothermia: ["hypothermia"],
    "Post-partum": ["post-partum"],
    Calving: ["calving"]
  }[state] 
}