added the necessary classes for the discovery web controller

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/common/formats/AuctionHouseDiscoveryJsonRepresentation.java

@@ -0,0 +1,45 @@
+package ch.unisg.tapas.auctionhouse.adapter.common.formats;
+
+import ch.unisg.tapas.auctionhouse.domain.AuctionHouseDiscoveryInformation;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import lombok.Getter;
+import lombok.Setter;
+
+public class AuctionHouseDiscoveryJsonRepresentation {
+    public static final String MEDIA_TYPE = "application/auctionhousediscovery + json";
+
+    @Getter @Setter
+    private String auctionHouseUri;
+
+    @Getter @Setter
+    private String webSubUri;
+
+    @Getter @Setter
+    private String taskTypes;
+
+    @Getter @Setter
+    private String timeStamp;
+
+    @Getter @Setter
+    private String groupName;
+
+    public AuctionHouseDiscoveryJsonRepresentation() {}
+
+    public AuctionHouseDiscoveryJsonRepresentation(AuctionHouseDiscoveryInformation auctionHouseDiscoveryInformation){
+        this.auctionHouseUri = auctionHouseDiscoveryInformation.getAuctionHouseUri().getValue();
+        this.webSubUri = auctionHouseDiscoveryInformation.getWebSubUri().getValue();
+        this.taskTypes = auctionHouseDiscoveryInformation.getTaskTypes().toString();
+        this.timeStamp = auctionHouseDiscoveryInformation.getTimeStamp().getValue();
+        this.groupName = auctionHouseDiscoveryInformation.getGroupName().getValue();
+    }
+
+    public static String serialize(AuctionHouseDiscoveryInformation auctionHouseDiscoveryInformation) throws JsonProcessingException {
+        AuctionHouseDiscoveryJsonRepresentation representation = new AuctionHouseDiscoveryJsonRepresentation(auctionHouseDiscoveryInformation);
+
+        ObjectMapper mapper = new ObjectMapper();
+        mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
+        return mapper.writeValueAsString(representation);
+    }
+}

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/in/web/AuctionHouseDiscoveryWebController.java

@@ -0,0 +1,56 @@
+package ch.unisg.tapas.auctionhouse.adapter.in.web;
+
+import ch.unisg.tapas.auctionhouse.adapter.common.formats.AuctionHouseDiscoveryJsonRepresentation;
+import ch.unisg.tapas.auctionhouse.application.port.in.AuctionHouseDiscoveryUseCase;
+import ch.unisg.tapas.auctionhouse.application.port.in.AuctionHouseDiscoveryCommand;
+import ch.unisg.tapas.auctionhouse.domain.AuctionHouseDiscoveryInformation;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.server.ResponseStatusException;
+
+
+/**
+ * Controller that handles HTTP requests for the auction house discovery. This controller implements
+ * the {@link AuctionHouseDiscoveryUseCase} use case using the {@link AuctionHouseDiscoveryCommand} command.
+ */
+@RestController
+public class AuctionHouseDiscoveryWebController {
+    private final AuctionHouseDiscoveryUseCase auctionHouseDiscoveryUseCase;
+
+    public AuctionHouseDiscoveryWebController(AuctionHouseDiscoveryUseCase auctionHouseDiscoveryUseCase) {
+        this.auctionHouseDiscoveryUseCase = auctionHouseDiscoveryUseCase;
+    }
+
+    @GetMapping(path="/discovery/", consumes = AuctionHouseDiscoveryJsonRepresentation.MEDIA_TYPE)
+    public ResponseEntity<String> auctionHouseDiscovery(@RequestBody AuctionHouseDiscoveryJsonRepresentation payload) {
+        AuctionHouseDiscoveryInformation.GroupName groupName = (payload.getGroupName() == null) ?
+            null : new AuctionHouseDiscoveryInformation.GroupName(payload.getGroupName());
+
+        AuctionHouseDiscoveryCommand command = new AuctionHouseDiscoveryCommand(
+            new AuctionHouseDiscoveryInformation.AuctionHouseUri(payload.getAuctionHouseUri()),
+            new AuctionHouseDiscoveryInformation.WebSubUri(payload.getAuctionHouseUri()),
+            new AuctionHouseDiscoveryInformation.TaskTypes(payload.getTaskTypes()),
+            new AuctionHouseDiscoveryInformation.TimeStamp(payload.getTimeStamp()),
+            groupName
+        );
+
+        AuctionHouseDiscoveryInformation auctionHouseDiscoveryInformation = auctionHouseDiscoveryUseCase.auctionHouseDiscovery(command);
+
+        try {
+            AuctionHouseDiscoveryJsonRepresentation representation = new AuctionHouseDiscoveryJsonRepresentation(auctionHouseDiscoveryInformation);
+            String auctionHouseDiscoveryJson = AuctionHouseDiscoveryJsonRepresentation.serialize(auctionHouseDiscoveryInformation);
+
+            HttpHeaders responseHeaders = new HttpHeaders();
+            responseHeaders.add(HttpHeaders.CONTENT_TYPE, AuctionHouseDiscoveryJsonRepresentation.MEDIA_TYPE);
+
+            return new ResponseEntity<>(auctionHouseDiscoveryJson, responseHeaders, HttpStatus.OK);
+        } catch (JsonProcessingException e) {
+            throw new ResponseStatusException(HttpStatus.INTERNAL_SERVER_ERROR);
+        }
+    }
+}

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/application/port/in/AuctionHouseDiscoveryCommand.java

@@ -0,0 +1,40 @@
+package ch.unisg.tapas.auctionhouse.application.port.in;
+
+import ch.unisg.tapas.auctionhouse.domain.Auction;
+import ch.unisg.tapas.auctionhouse.domain.AuctionHouseDiscoveryInformation;
+import ch.unisg.tapas.common.SelfValidating;
+import lombok.Value;
+
+import javax.validation.constraints.NotNull;
+
+@Value
+public class AuctionHouseDiscoveryCommand extends SelfValidating<AuctionHouseDiscoveryCommand> {
+    @NotNull
+    private final AuctionHouseDiscoveryInformation.AuctionHouseUri auctionHouseUri;
+
+    @NotNull
+    private final AuctionHouseDiscoveryInformation.WebSubUri webSubUri;
+
+    @NotNull
+    private final AuctionHouseDiscoveryInformation.TaskTypes taskTypes;
+
+    @NotNull
+    private final AuctionHouseDiscoveryInformation.TimeStamp timeStamp;
+
+    //Didn't put @NotNull here since the GroupName is not required
+    private final AuctionHouseDiscoveryInformation.GroupName groupName;
+
+    public AuctionHouseDiscoveryCommand(AuctionHouseDiscoveryInformation.AuctionHouseUri auctionHouseUri,
+                                        AuctionHouseDiscoveryInformation.WebSubUri webSubUri,
+                                        AuctionHouseDiscoveryInformation.TaskTypes taskTypes,
+                                        AuctionHouseDiscoveryInformation.TimeStamp timeStamp,
+                                        AuctionHouseDiscoveryInformation.GroupName groupName) {
+        this.auctionHouseUri = auctionHouseUri;
+        this.webSubUri = webSubUri;
+        this.taskTypes = taskTypes;
+        this.timeStamp = timeStamp;
+        this.groupName = groupName;
+
+        this.validateSelf();
+    }
+}

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/application/port/in/AuctionHouseDiscoveryUseCase.java

@@ -0,0 +1,8 @@
+package ch.unisg.tapas.auctionhouse.application.port.in;
+
+import ch.unisg.tapas.auctionhouse.domain.AuctionHouseDiscoveryInformation;
+
+public interface AuctionHouseDiscoveryUseCase {
+
+    AuctionHouseDiscoveryInformation auctionHouseDiscovery(AuctionHouseDiscoveryCommand command);
+}

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

@@ -0,0 +1,62 @@
+package ch.unisg.tapas.auctionhouse.domain;
+
+import lombok.Getter;
+import lombok.Value;
+
+import java.util.ArrayList;
+
+//TODO: change to array type
+public class AuctionHouseDiscoveryInformation {
+
+    @Getter
+    private final AuctionHouseUri auctionHouseUri;
+
+    @Getter
+    private final WebSubUri webSubUri;
+
+    @Getter
+    private final TaskTypes taskTypes;
+
+    @Getter
+    private final TimeStamp timeStamp;
+
+    //Had to initialize this in the constructor, but it's not required, so I'm not sure
+    //if this is correct
+    @Getter
+    private final GroupName groupName;
+
+    public AuctionHouseDiscoveryInformation(AuctionHouseUri auctionHouseUri, WebSubUri webSubUri,
+                                            TaskTypes taskTypes, TimeStamp timeStamp, GroupName groupName){
+        this.auctionHouseUri = auctionHouseUri;
+        this.webSubUri = webSubUri;
+        this.taskTypes = taskTypes;
+        this.timeStamp = timeStamp;
+        this.groupName = groupName; //see above
+    }
+
+
+    @Value
+    public static class AuctionHouseUri {
+        private String value;
+    }
+
+    @Value
+    public static class WebSubUri {
+        private String value;
+    }
+
+    @Value
+    public static class TaskTypes {
+        private String value;
+    }
+
+    @Value
+    public static class TimeStamp {
+        private String value;
+    }
+
+    @Value
+    public static class GroupName {
+        private String value;
+    }
+}