"use strict";

var train_json_url = ("https://www.googleapis.com/mapsengine/v1/tables/" +
                      "01382379791355219452-08584582962951999356" +
                      "/features?&version=published&maxResults=1000&key=" +
                      "AIzaSyB8k_VTTFxP75_a-na8jrY1Fk8oQClQMt8" +
                      "&maxResults=250");

var station_json_url = ("https://www.googleapis.com/mapsengine/v1/tables/" +
                        "01382379791355219452-17620014524089761219" +
                        "/features?&version=published&maxResults=1000&key=" +
                        "AIzaSyB8k_VTTFxP75_a-na8jrY1Fk8oQClQMt8");

if (document.location.hostname == "localhost") {
  train_json_url = "./sample-data/amtrak-sample.json";
  station_json_url = "./sample-data/amtrak-stations.json";
}

function isStation(s) {return s.substring(0, 7) == 'Station';}
function stationIdx(s) {return parseInt(s.substring(7) - 1);}

function TrainData(ctx) {
  ctx.on('refresh-train-data', function() {
    d3.json(train_json_url, function(error, train_data) {
      window.train_data = train_data;
      train_data.features.forEach(function(train) {
        var props = train.properties;
        props.stops = [];
        for (var p in props) {
          if (isStation(p)) {
            props.stops[stationIdx(p)] = JSON.parse(props[p]);
          }
        }
      });
      ctx.trigger('train-data', train_data);
    });
  });

  ctx.on('refresh-station-data', function() {
    d3.json(station_json_url, function(error, station_data) {
      window.station_data = station_data;
      ctx.trigger('station-data', station_data);
    });
  });
}