feat: add OpenWeatherMap support

src/main/java/eirb/pg203/Main.java

@@ -4,13 +4,16 @@ import java.io.IOException;
 
 public class Main {
     public static void main(String[] args) throws IOException {
-		String APIKey = "cef8e1b6ea364994b5072423240111";
-		WeatherAPI weatherAPI = new WeatherAPI(APIKey);
+		String WeatherAPIKey = "cef8e1b6ea364994b5072423240111";
+		String OpenWMapKey = "5719b35ddcb39846c228ea2e37357464";
+		WeatherAPI weatherAPI = new WeatherAPI(WeatherAPIKey);
 		OpenMeteo openMeteo = new OpenMeteo();
+		OpenWeatherMap openWeatherMap = new OpenWeatherMap(OpenWMapKey);
 		WeatherDisplay display = new WeatherDisplayBasic();
 
 		display.addAPI(weatherAPI);
 		display.addAPI(openMeteo);
+		display.addAPI(openWeatherMap);
 
 		display.display(5, "Bordeaux");
     }

src/main/java/eirb/pg203/OpenWeatherMap.java

@@ -0,0 +1,82 @@
+package eirb.pg203;
+
+import org.json.JSONObject;
+import org.json.JSONArray;
+
+import eirb.pg203.utils.JSONFetcher;
+
+import java.io.IOException;
+import java.net.URI;
+import java.net.URL;
+import java.time.DayOfWeek;
+import java.time.Instant;
+import java.time.ZoneId;
+import java.util.ArrayList;
+
+// https://api.open-meteo.com/v1/forecast?latitude=52.52&longitude=13.41&hourly=temperature_2m
+
+public class OpenWeatherMap implements WeatherDataAPI {
+	private static final String forecastBaseURL = "https://api.openweathermap.org/data/2.5/forecast";
+	private String APIKey;
+
+	OpenWeatherMap(String APIKey) {
+		this.APIKey = APIKey;
+	}
+
+  private JSONObject fetchWeather(int days, City city) throws IOException {
+    URL url = URI.create(
+        String.format(forecastBaseURL + "?appid=%s&lat=%.2f&lon=%.2f&units=metric",
+					APIKey,
+					city.getCityCoords().getLat(),
+					city.getCityCoords().getLon(),
+					days
+        )
+    ).toURL();
+
+    return JSONFetcher.fetch(url);
+  }
+
+  /**
+   * @param day Day, 0 ≤ day ≤ 14
+   */
+  @Override
+  public Temperature getTemperature(int day, String city) throws IOException {
+    JSONObject result = fetchWeather(day+1, new City(city));
+    JSONArray list = result.getJSONArray("list");
+    float temp_c = list.getJSONObject(0).getJSONObject("main").getFloat("temp");
+
+    return new Temperature(temp_c, new City(city), Instant.now());
+  }
+
+  @Override
+  public Temperature getTemperature(int day, int hour, String city) throws IOException{
+    return getTemperature(day, city);
+  }
+
+  @Override
+  public ArrayList<Temperature> getTemperatures(int days, String city) throws IOException {
+    JSONObject result = fetchWeather(days, new City(city));
+    JSONArray list = result.getJSONArray("list");
+
+    ArrayList<Temperature> temperatures = new ArrayList<>();
+		int cnt = result.getInt("cnt");
+		DayOfWeek day = Instant.now().atZone(ZoneId.systemDefault()).getDayOfWeek();
+
+    for (int i = 0; i < cnt; ++i) {
+			JSONObject data = list.getJSONObject(i);
+			int timestamp = data.getInt("dt");
+
+			if (day == Instant.ofEpochSecond(timestamp).atZone(ZoneId.systemDefault()).getDayOfWeek())
+			{
+				float temp_c = data.getJSONObject("main").getFloat("temp");
+				temperatures.add(new Temperature(temp_c, new City(city), Instant.now()));
+			}
+    }
+    return temperatures;
+  }
+
+  @Override
+  public String getAPIName() {
+    return "OpenWeatherMap";
+  }
+}

src/main/java/eirb/pg203/WeatherAPI.java

@@ -13,6 +13,7 @@ import java.util.ArrayList;
 
 public class WeatherAPI implements WeatherDataAPI{
     private final String weatherAPIKey;
+		private static final String forecastBaseURL = "https://api.weatherapi.com/v1/forecast.json";
 
     WeatherAPI(String weatherAPIKey) {
         this.weatherAPIKey = weatherAPIKey;
@@ -20,7 +21,7 @@ public class WeatherAPI implements WeatherDataAPI{
 
     private JSONObject fetchWeather(int days, String city) throws IOException {
         URL url = URI.create(
-                String.format("https://api.weatherapi.com/v1/forecast.json?key=%s&q=%s&days=%d",
+                String.format(forecastBaseURL + "?key=%s&q=%s&days=%d",
                         this.weatherAPIKey,
                         city,
                         days

src/main/java/eirb/pg203/WeatherDisplayBasic.java

@@ -3,7 +3,7 @@ package eirb.pg203;
 import java.util.ArrayList;
 
 class WeatherDisplayBasic implements WeatherDisplay {
-	ArrayList<WeatherDataAPI> apis;
+	private ArrayList<WeatherDataAPI> apis;
 
 	WeatherDisplayBasic() {
 		this.apis = new ArrayList<WeatherDataAPI>();
@@ -42,12 +42,13 @@ class WeatherDisplayBasic implements WeatherDisplay {
 				temperatures = w.getTemperatures(days, city);
 				displayTemperatures(w.getAPIName(), temperatures);
 			} catch (Exception e) {
+				System.err.println(e);
 				System.err.println("ntm++ martin");
 			}
 		}
 	}
 
-    public void addAPI(WeatherDataAPI w) {
+	public void addAPI(WeatherDataAPI w) {
 		this.apis.add(w);
 	}
 }