Merge Weather Underground provider

src/pkjs/index.js

@@ -1,7 +1,9 @@
 var config = require('./config.js');
-var DarkSkyProvider = require('./weather/darksky.js');
+// var DarkSkyProvider = require('./weather/darksky.js');
+var WundergroundProvider = require('./weather/wunderground.js');
 
-var provider = new DarkSkyProvider(config.apiKey);
+// var provider = new DarkSkyProvider(config.darkSkyApiKey);
+var provider = new WundergroundProvider(config.wundergroundApiKey);
 
 // Listen for when the watchface is opened
 Pebble.addEventListener('ready',

src/pkjs/weather/wunderground.js

@@ -0,0 +1,48 @@
+var WeatherProvider = require('./provider.js');
+
+function request(url, type, callback) {
+    var xhr = new XMLHttpRequest();
+    xhr.onload = function() {
+        callback(this.responseText);
+    };
+    xhr.open(type, url);
+    xhr.send();
+}
+
+var WundergroundProvider = function(apiKey) {
+    this._super.call(this);
+    this.apiKey = apiKey;
+}
+
+WundergroundProvider.prototype = Object.create(WeatherProvider.prototype);
+WundergroundProvider.prototype.constructor = WundergroundProvider;
+WundergroundProvider.prototype._super = WeatherProvider;
+
+WundergroundProvider.prototype.withWundergroundResponse = function(lat, lon, callback) {
+    // callback(wundergroundResponse)
+    var url = 'https://api.weather.com/v1/geocode/' + lat + '/' + lon + '/forecast/hourly/48hour.json?apiKey=' + this.apiKey;
+    request(url, 'GET', function (response) {
+        var weatherData = JSON.parse(response);
+        callback(weatherData);
+    });
+}
+
+// ============== IMPORTANT OVERRIDE ================
+
+WundergroundProvider.prototype.withProviderData = function(lat, lon, callback) {
+    // callBack expects that this.hasValidData() will be true
+    this.withWundergroundResponse(lat, lon, (function(wundergroundResponse) {
+        var forecast = wundergroundResponse.forecasts;
+        this.tempTrend = forecast.map(function(entry) {
+            return entry.temp;
+        })
+        this.precipTrend = forecast.map(function(entry) {
+            return entry.pop / 100.0
+        })
+        this.startHour = new Date(forecast[0].fcst_valid * 1000).getHours()
+        this.currentTemp = this.tempTrend[0];
+        callback();
+    }).bind(this));
+}
+
+module.exports = WundergroundProvider;