Pebble: Create Timeline Pins When It Will Rain with DarkSky API

app.js

var darkSkyApiKey = ""

/*
In theory (untested), this app should work once you (1) add an api key from dark sky and (2) replace the three fantasy functions with real code.
*/

var UI = require('ui');
var ajax = require('ajax');

var blackStatusBar = {
	color: "white",
	backgroundColor: "black",
	separator: 'none'
};

//fantasyFunction.wakeup(60); //In fantasy land, this function causes the the app to wake up every 60 minutes.

// Request current position
navigator.geolocation.getCurrentPosition(getWeatherData, function() {
	console.log("Could not get location");
	}, {
  enableHighAccuracy: true,
  maximumAge: 10000,
  timeout: 1000
});

var weatherAlerts = [];

function getWeatherData(pos) {
	ajax({ url: 'https://api.darksky.net/forecast/' + darkSkyApiKey + "/" + pos.coords.latitude + ',' + pos.coords.longitude + '?exclude=currently,minutely,daily,alerts,flags', type: 'json' }, function(data) {
		for (i = 0; i < data.hourly.data.length; i++) {
			if (data.hourly.data[i].icon === "rain" || data.hourly.data[i].icon === "snow" || data.hourly.data[i].icon === "sleet") {
				icon = data.hourly.data[i].icon;
				duration = 60;
				while (data.hourly.data[i+1].icon === icon) {
					i++;
					duration = duration + 60;
				}
				if (icon === "rain") {
					tinyIcon = "system://images/TIMELINE_HEAVY_RAIN";
					smallIcon = "system://images/TIMELINE_HEAVY_RAIN";
					largeIcon = "system://images/TIMELINE_HEAVY_RAIN";
				}
				else if (icon === "snow") {
					tinyIcon = "system://images/TIMELINE_HEAVY_SNOW";
					smallIcon = "system://images/TIMELINE_HEAVY_SNOW";
					largeIcon = "system://images/TIMELINE_HEAVY_SNOW";
				}
				else if (icon === "sleet") {
					tinyIcon = "system://images/TIMELINE_RAINING_AND_SNOWING";
					smallIcon = "system://images/TIMELINE_RAINING_AND_SNOWING";
					largeIcon = "system://images/TIMELINE_RAINING_AND_SNOWING";
				}
				pin = {
					"id": "wowfunhappy-will-it-rain-" + data.hourly.data[i].time,
					"time": new Date(data.hourly.data[i].time * 1000).toISOString(),
					"duration": duration,
					"lastUpdated": new Date(Date.now()).toISOString(),
					"layout": {
						"type": "weatherPin",
						"title": data.hourly.data[i].summary,
						"locationName": "", //todo: show something useful here?
						"tinyIcon": tinyIcon,
						"smallIcon": smallIcon,
						"largeIcon": largeIcon,
					}
				};
				//fantasyFunction.timeline.push(pin);
				console.log(JSON.stringify(pin));
			}
			else {
				//fantasyFunction.timeline.delete("wowfunhappy-will-it-rain-" + data.hourly.data[i].time);
			}
		}
	});
}