Added a discover adapter and changed the domain object a bit

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/out/web/AuctionHouseDiscoveryHttpAdapter.java

@@ -0,0 +1,74 @@
+package ch.unisg.tapas.auctionhouse.adapter.out.web;
+
+import ch.unisg.tapas.auctionhouse.application.port.out.AuctionHouseDiscoveryPort;
+import ch.unisg.tapas.auctionhouse.domain.AuctionHouseDiscoveryInformation;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.json.JSONArray;
+import org.json.JSONObject;
+
+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.sql.Timestamp;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.LinkedList;
+import java.util.List;
+
+public class AuctionHouseDiscoveryHttpAdapter implements AuctionHouseDiscoveryPort {
+    private static final Logger LOGGER = LogManager.getLogger(AuctionHouseDiscoveryHttpAdapter.class);
+
+    public List<AuctionHouseDiscoveryInformation> fetchAuctionHouseInformation(URI auctionHouseURI){
+        try{
+            var client = HttpClient.newHttpClient();
+            var request = HttpRequest.newBuilder()
+                .uri(auctionHouseURI)
+                .GET()
+                .build();
+            var response = client.send(request, HttpResponse.BodyHandlers.ofString());
+            LOGGER.info(response.body());
+            var responseBody = new JSONObject(response.body());
+
+            var arrayOfInformation = responseBody.getJSONArray("auctionHouseInfo");
+            var returnList = new LinkedList<AuctionHouseDiscoveryInformation>();
+
+            for(int i = 0; i < arrayOfInformation.length(); i++)
+            {
+                var informationJSON = arrayOfInformation.getJSONObject(i);
+                var information = new AuctionHouseDiscoveryInformation(
+                    new AuctionHouseDiscoveryInformation.AuctionHouseUri(URI.create(informationJSON.getString("auctionHouseURI"))),
+                    new AuctionHouseDiscoveryInformation.WebSubUri(URI.create(informationJSON.getString("webSubURI"))),
+                    new AuctionHouseDiscoveryInformation.TaskTypes(getTaskTypes(informationJSON.getJSONArray("taskTypes"))),
+                    new AuctionHouseDiscoveryInformation.TimeStamp(Timestamp.valueOf(informationJSON.getString("timeStamp"))),
+                    new AuctionHouseDiscoveryInformation.GroupName(informationJSON.getString("groupName"))
+                );
+                returnList.add(information);
+            }
+
+            return returnList;
+
+        } catch (IOException e) {
+            e.printStackTrace();
+            return Collections.<AuctionHouseDiscoveryInformation>emptyList();
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+            return Collections.<AuctionHouseDiscoveryInformation>emptyList();
+        }
+
+    }
+
+    private List<String> getTaskTypes(JSONArray arrayOfTypes){
+        var listOfTypes = new LinkedList<String>();
+
+        for(int i = 0; i < arrayOfTypes.length(); i++)
+        {
+            listOfTypes.add(arrayOfTypes.getString(i));
+        }
+
+        return listOfTypes;
+    }
+
+}

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/application/port/out/AuctionHouseDiscoveryPort.java

@@ -0,0 +1,10 @@
+package ch.unisg.tapas.auctionhouse.application.port.out;
+
+import ch.unisg.tapas.auctionhouse.domain.AuctionHouseDiscoveryInformation;
+
+import java.net.URI;
+import java.util.List;
+
+public interface AuctionHouseDiscoveryPort {
+    List<AuctionHouseDiscoveryInformation> fetchAuctionHouseInformation(URI auctionHouseURI);
+}

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/domain/AuctionHouseDiscoveryInformation.java

@@ -3,7 +3,10 @@ package ch.unisg.tapas.auctionhouse.domain;
 import lombok.Getter;
 import lombok.Value;
 
+import java.net.URI;
+import java.sql.Timestamp;
 import java.util.ArrayList;
+import java.util.List;
 
 //TODO: change to array type
 public class AuctionHouseDiscoveryInformation {
@@ -37,22 +40,22 @@ public class AuctionHouseDiscoveryInformation {
 
     @Value
     public static class AuctionHouseUri {
-        private String value;
+        private URI value;
     }
 
     @Value
     public static class WebSubUri {
-        private String value;
+        private URI value;
     }
 
     @Value
     public static class TaskTypes {
-        private String value;
+        private List<String> value;
     }
 
     @Value
     public static class TimeStamp {
-        private String value;
+        private Timestamp value;
     }
 
     @Value