Die Funktionalität des WetterService wurde erfüllt

TravelBuddyApp/src/main/java/domain/WetterService.java

@@ -1,6 +1,78 @@
 package domain;
+import java.io.IOException;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+import java.util.HashMap;
+import java.util.Map;
+import org.json.JSONArray;
+import org.json.JSONObject;
 
 public class WetterService {
 
+	private static final String API_KEY = "fc01dfd47f80659f12512c295e80b201";
+	private static final HttpClient client = HttpClient.newHttpClient();
+
+	public static String getAktuellesWetter(String location) throws IOException, InterruptedException {
+
+		String url = "http://api.openweathermap.org/data/2.5/weather?q=" + location + "&appid=" + API_KEY
+				+ "&units=metric";
+		HttpRequest request = HttpRequest.newBuilder().uri(URI.create(url)).build();
+		HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
+
+		if (response.statusCode() != 200) {
+			throw new IOException("Unerwarteter Code " + response.statusCode());
+		}
+
+		JSONObject json = new JSONObject(response.body());
+		double temp = json.getJSONObject("main").getDouble("temp");
+		String weather = json.getJSONArray("weather").getJSONObject(0).getString("description");
+
+		return "Aktuelle Temperatur: " + temp + "°C, Wetter: " + weather;
+	}
 	
+	public static String getWettervorhersage(String location) throws IOException, InterruptedException {
+
+		String url = "http://api.openweathermap.org/data/2.5/forecast?q=" + location + "&appid=" + API_KEY
+				+ "&units=metric";
+		HttpRequest request = HttpRequest.newBuilder().uri(URI.create(url)).build();
+		HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
+
+		if (response.statusCode() != 200) {
+			throw new IOException("Unerwarteter Code " + response.statusCode());
+		}
+
+		JSONObject json = new JSONObject(response.body());
+		Map<String, Double> tempByDay = new HashMap<>();
+		Map<String, String> weatherByDay = new HashMap<>();
+		LocalDate today = LocalDate.now();
+		DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
+
+		JSONArray forecastList = json.getJSONArray("list");
+		for (int i = 0; i < forecastList.length(); i++) {
+			JSONObject forecastEntry = forecastList.getJSONObject(i);
+			String dateTime = forecastEntry.getString("dt_txt");
+			String date = dateTime.split(" ")[0];
+			LocalDate forecastDate = LocalDate.parse(date, formatter);
+
+			if (forecastDate.isAfter(today) && !tempByDay.containsKey(date)) {
+				double temp = forecastEntry.getJSONObject("main").getDouble("temp");
+				String weather = forecastEntry.getJSONArray("weather").getJSONObject(0).getString("description");
+
+				tempByDay.put(date, temp);
+				weatherByDay.put(date, weather);
+			}
+		}
+
+		StringBuilder forecast = new StringBuilder("3-Tage-Wettervorhersage:\n");
+		tempByDay.keySet().stream().sorted().limit(3).forEach(date -> {
+			forecast.append(String.format("%s - Temperatur: %.2f°C, Wetter: %s\n", date, tempByDay.get(date),
+					weatherByDay.get(date)));
+		});
+
+		return forecast.toString();
+	}
 }