Exemple #1
0
func queryHandler(w http.ResponseWriter, r *http.Request) {
	if r.FormValue("date") == "" && r.FormValue("epoch") == "" {
		var params = map[string]interface{}{
			"TwoHoursAgo": date.NowInPdt().Add(-2 * time.Hour),
		}
		if err := templates.ExecuteTemplate(w, "fdb-queryform", params); err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
		}
		return
	}

	c := appengine.NewContext(r)
	db := fdb.FlightDB{C: c, Memcache: true}

	var t time.Time
	if r.FormValue("epoch") != "" {
		if epoch, err := strconv.ParseInt(r.FormValue("epoch"), 10, 64); err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		} else {
			t = time.Unix(epoch, 0)
		}
	} else {
		var err2 error
		t, err2 = date.ParseInPdt("2006/01/02 15:04:05", r.FormValue("date")+" "+r.FormValue("time"))
		if err2 != nil {
			http.Error(w, err2.Error(), http.StatusInternalServerError)
			return
		}
	}

	var refPoint *geo.Latlong = nil
	if r.FormValue("lat") != "" {
		refPoint = &geo.Latlong{}
		var err error
		if refPoint.Lat, err = strconv.ParseFloat(r.FormValue("lat"), 64); err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		if refPoint.Long, err = strconv.ParseFloat(r.FormValue("long"), 64); err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
	}

	if snapshots, err := db.LookupSnapshotsAtTimestampUTC(t.UTC(), refPoint, 1000); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
	} else {
		var params = map[string]interface{}{
			"Legend":        buildLegend(t),
			"SearchTimeUTC": t.UTC(),
			"SearchTime":    date.InPdt(t),
			"Flights":       snapshots2params(snapshots),

			"FlightsJS":  ftype.FlightSnapshotSet(snapshots).ToJSVar(),
			"MapsAPIKey": kGoogleMapsAPIKey,
			"Center":     sfo.KLatlongSERFR1,
			"Zoom":       9,
			// "CaptureArea": fdb.KBoxSFO120K,  // comment out, as we don't want it in this view
		}

		if r.FormValue("resultformat") == "json" {
			for i, _ := range snapshots {
				snapshots[i].F.Track = nil
				snapshots[i].F.Tracks = nil
			}
			js, err := json.Marshal(snapshots)
			if err != nil {
				http.Error(w, err.Error(), http.StatusInternalServerError)
				return
			}
			w.Header().Set("Content-Type", "application/json")
			w.Write(js)

		} else {
			templateName := "fdb-queryresults-map"
			if r.FormValue("resultformat") == "list" {
				templateName = "fdb-queryresults-list"
			}

			if err := templates.ExecuteTemplate(w, templateName, params); err != nil {
				http.Error(w, err.Error(), http.StatusInternalServerError)
			}
		}
	}
}