Fix openweather forecast in new weather module, fetch daily data

CHANGELOG.md

@@ -18,6 +18,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Fixed
 - Fixed temperature displays in currentweather and weatherforecast modules [#1503](https://github.com/MichMich/MagicMirror/issues/1503).
+- Weather forecast now works with openweathermap in new weather module. Daily data are displayed, see issue [#1504](https://github.com/MichMich/MagicMirror/issues/1504).
 
 ## [2.6.0] - 2019-01-01
 

modules/default/weather/README.md

@@ -78,7 +78,7 @@ The following properties can be configured:
 | ---------------------------- | -----------
 | `apiVersion`                 | The OpenWeatherMap API version to use. <br><br> **Default value:**  `2.5`
 | `apiBase`                    | The OpenWeatherMap base URL. <br><br> **Default value:**  `'http://api.openweathermap.org/data/'`
-| `weatherEndpoint`	           | The OpenWeatherMap API endPoint. <br><br> **Possible values:** `/weather` or `/forecast/daily` <br> **Default value:**  `'/weather'`
+| `weatherEndpoint`	           | The OpenWeatherMap API endPoint. <br><br> **Possible values:** `/weather`, `/forecast` or `/forecast/daily` (paying users only) <br> **Default value:**  `'/weather'`
 | `locationID`                 | Location ID from [OpenWeatherMap](https://openweathermap.org/find) **This will override anything you put in location.** <br> Leave blank if you want to use location. <br> **Example:** `1234567` <br> **Default value:** `false` <br><br> **Note:** When the `location` and `locationID` are both not set, the location will be based on the information provided by the calendar module. The first upcoming event with location data will be used.
 | `location`                   | The location used for weather information. <br><br> **Example:** `'Amsterdam,Netherlands'` <br> **Default value:** `false` <br><br> **Note:** When the `location` and `locationID` are both not set, the location will be based on the information provided by the calendar module. The first upcoming event with location data will be used.
 | `apiKey`                      | The [OpenWeatherMap](https://home.openweathermap.org) API key, which can be obtained by creating an OpenWeatherMap account. <br><br>  This value is **REQUIRED**

modules/default/weather/providers/openweathermap.js

@@ -87,25 +87,64 @@ WeatherProvider.register("openweathermap", {
 	 * Generate WeatherObjects based on forecast information
 	 */
 	generateWeatherObjectsFromForecast(forecasts) {
+		// initial variable declaration
 		const days = [];
+		// variables for temperature range and rain
+		var minTemp = [];
+		var maxTemp = [];
+		var rain = 0;
+		// variable for date
+		let date = "";
+		var weather = new WeatherObject(this.config.units);
 
 		for (const forecast of forecasts) {
-			const weather = new WeatherObject(this.config.units);
-
-			weather.date = moment(forecast.dt, "X");
-			weather.minTemperature = forecast.temp.min;
-			weather.maxTemperature = forecast.temp.max;
-			weather.weatherType = this.convertWeatherType(forecast.weather[0].icon);
-			if (this.config.units === "imperial" && !isNaN(forecast.rain)) {
-				weather.rain = forecast.rain / 25.4
+
+			if (date === moment(forecast.dt, "X").format("YYYY-MM-DD")) {
+				// the same day as before
+				// add values from forecast to corresponding variables
+				minTemp.push(forecast.main.temp_min);
+				maxTemp.push(forecast.main.temp_max);
+				if (this.config.units === "imperial" && !isNaN(forecast.rain["3h"])) {
+					rain += forecast.rain["3h"] / 25.4;
+				} else {
+					rain += forecast.rain["3h"];
+				}
 			} else {
-				weather.rain = forecast.rain;
+				// a new day
+				// calculate minimum/maximum temperature, specify rain amount
+				weather.minTemperature = Math.min.apply(null, minTemp);
+				weather.maxTemperature = Math.max.apply(null, maxTemp);
+				weather.rain = rain;
+				// push weather information to days array
+				days.push(weather);
+				// create new weather-object
+				weather = new WeatherObject(this.config.units);
+
+				minTemp = [];
+				maxTemp = [];
+				rain *= 0;
+
+				// set new date
+				date = moment(forecast.dt, "X").format("YYYY-MM-DD");
+
+				// specify date
+				weather.date = moment(forecast.dt, "X");
+
+				// select weather type by first forecast value of a day, is this reasonable?
+				weather.weatherType = this.convertWeatherType(forecast.weather[0].icon);
+
+				// add values from first forecast of this day to corresponding variables
+				minTemp.push(forecast.main.temp_min);
+				maxTemp.push(forecast.main.temp_max);
+				if (this.config.units === "imperial" && !isNaN(forecast.rain["3h"])) {
+					rain += forecast.rain["3h"] / 25.4;
+				} else {
+					rain += forecast.rain["3h"];
+				}
 			}
-
-			days.push(weather);
 		}
-
-		return days;
+		
+		return days.slice(1);
 	},
 
 	/*