func loadOrCreateDistribution(ctx appengine.Context, timer *m.RunningTimer, dim m.Dimension) (*m.Distribution, error) {
id, err := datastore.DimensionID(timer, dim)
if err != nil {
return nil, err
}
dist, err := datastore.LoadDistribution(ctx, timer.Owner, timer.TimerID, dim, id)
if err != nil {
return nil, err
}
if dist == nil {
dist = datastore.NewDistribution(timer.Owner, dim, id, timer.TimerID)
}
return dist, nil
}
// History handles anything under "/history/". The rest of the URL specifies
// the timer id, dimension and id. E.g. "/history/daily-commute/year/2015"
func History(w http.ResponseWriter, r *http.Request) {
ctx := appengine.NewContext(r)
u := user.Current(ctx)
path := r.URL.Path[len("/history/"):]
elements := strings.Split(path, "/")
if len(elements) != 3 {
http.NotFound(w, r)
return
}
timerID, dimension, id := elements[0], m.Dimension(elements[1]), elements[2]
dist, err := datastore.LoadDistribution(ctx, u.String(), timerID, dimension, id)
if internalError(w, err) {
return
}
if dist == nil {
http.NotFound(w, r)
return
}
bytes, err := json.Marshal(dist)
if internalError(w, err) {
return
}
fmt.Fprint(w, inHTMLBody(messageHTML("History: "+path)+string(bytes)+menu))
}