Merge pull request #636 from woowacourse-teams/feature/#626

채팅방 정보 가져오기 API 구현

backend/src/main/java/mouda/backend/bet/domain/Bet.java

@@ -56,6 +56,10 @@ public long getLoserId() {
 		return loserId;
 	}
 
+	public boolean isLoser(long otherId) {
+		return loserId == otherId;
+	}
+
 	public long getId() {
 		return betDetails.getId();
 	}

backend/src/main/java/mouda/backend/chat/business/ChatRoomService.java

@@ -0,0 +1,54 @@
+package mouda.backend.chat.business;
+
+import java.util.List;
+
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import lombok.RequiredArgsConstructor;
+import mouda.backend.chat.domain.ChatPreview;
+import mouda.backend.chat.domain.ChatRoomDetails;
+import mouda.backend.chat.domain.ChatRoomType;
+import mouda.backend.chat.implement.ChatPreviewManager;
+import mouda.backend.chat.implement.ChatPreviewManagerRegistry;
+import mouda.backend.chat.implement.ChatRoomDetailsFinder;
+import mouda.backend.chat.implement.ChatRoomWriter;
+import mouda.backend.chat.presentation.response.ChatPreviewResponses;
+import mouda.backend.chat.presentation.response.ChatRoomDetailsResponse;
+import mouda.backend.darakbangmember.domain.DarakbangMember;
+import mouda.backend.moim.domain.Moim;
+import mouda.backend.moim.implement.finder.MoimFinder;
+import mouda.backend.moim.implement.writer.MoimWriter;
+
+@Service
+@Transactional
+@RequiredArgsConstructor
+public class ChatRoomService {
+
+	private final ChatRoomDetailsFinder chatRoomDetailsFinder;
+	private final ChatPreviewManagerRegistry chatPreviewManagerRegistry;
+	private final ChatRoomWriter chatRoomWriter;
+	private final MoimFinder moimFinder;
+	private final MoimWriter moimWriter;
+
+	@Transactional(readOnly = true)
+	public ChatRoomDetailsResponse findChatRoomDetails(long darakbangId, long chatRoomId, DarakbangMember darakbangMember) {
+		ChatRoomDetails chatRoomDetails = chatRoomDetailsFinder.find(darakbangId, chatRoomId, darakbangMember);
+
+		return ChatRoomDetailsResponse.from(chatRoomDetails);
+	}
+
+	@Transactional(readOnly = true)
+	public ChatPreviewResponses findChatPreview(DarakbangMember darakbangMember, ChatRoomType chatRoomType) {
+		ChatPreviewManager manager = chatPreviewManagerRegistry.getManager(chatRoomType);
+		List<ChatPreview> chatPreviews = manager.create(darakbangMember);
+
+		return ChatPreviewResponses.toResponse(chatPreviews);
+	}
+
+	public void openChatRoom(Long darakbangId, Long moimId, DarakbangMember darakbangMember) {
+		Moim moim = moimFinder.read(moimId, darakbangId);
+		moimWriter.openChatByMoimer(moim, darakbangMember);
+		chatRoomWriter.append(moimId, darakbangId, ChatRoomType.MOIM);
+	}
+}

backend/src/main/java/mouda/backend/chat/business/ChatService.java

@@ -6,22 +6,16 @@
 import org.springframework.transaction.annotation.Transactional;
 
 import lombok.RequiredArgsConstructor;
-import mouda.backend.chat.domain.ChatPreview;
 import mouda.backend.chat.domain.ChatRoom;
-import mouda.backend.chat.domain.ChatRoomType;
 import mouda.backend.chat.domain.ChatWithAuthor;
 import mouda.backend.chat.domain.Chats;
-import mouda.backend.chat.implement.ChatPreviewManager;
-import mouda.backend.chat.implement.ChatPreviewManagerRegistry;
 import mouda.backend.chat.implement.ChatRoomFinder;
-import mouda.backend.chat.implement.ChatRoomWriter;
 import mouda.backend.chat.implement.ChatWriter;
 import mouda.backend.chat.presentation.request.ChatCreateRequest;
 import mouda.backend.chat.presentation.request.DateTimeConfirmRequest;
 import mouda.backend.chat.presentation.request.LastReadChatRequest;
 import mouda.backend.chat.presentation.request.PlaceConfirmRequest;
 import mouda.backend.chat.presentation.response.ChatFindUnloadedResponse;
-import mouda.backend.chat.presentation.response.ChatPreviewResponses;
 import mouda.backend.darakbangmember.domain.DarakbangMember;
 import mouda.backend.moim.domain.Moim;
 import mouda.backend.moim.implement.finder.MoimFinder;
@@ -35,9 +29,7 @@ public class ChatService {
 	private final ChatRoomFinder chatRoomFinder;
 	private final ChatWriter chatWriter;
 	private final MoimWriter moimWriter;
-	private final ChatPreviewManagerRegistry chatPreviewManagerRegistry;
 	private final MoimFinder moimFinder;
-	private final ChatRoomWriter chatRoomWriter;
 
 	public void createChat(
 		long darakbangId,
@@ -86,24 +78,11 @@ public void confirmDateTime(long darakbangId, long chatRoomId, DateTimeConfirmRe
 		// notificationService.notifyToMembers(NotificationType.MOIM_TIME_CONFIRMED, darakbangId, moim, darakbangMember);
 	}
 
-	public ChatPreviewResponses findChatPreview(DarakbangMember darakbangMember, ChatRoomType chatRoomType) {
-		ChatPreviewManager manager = chatPreviewManagerRegistry.getManager(chatRoomType);
-		List<ChatPreview> chatPreviews = manager.create(darakbangMember);
-
-		return ChatPreviewResponses.toResponse(chatPreviews);
-	}
-
 	public void updateLastReadChat(
 		long darakbangId, long chatRoomId, LastReadChatRequest request, DarakbangMember darakbangMember
 	) {
 		ChatRoom chatRoom = chatRoomFinder.read(darakbangId, chatRoomId, darakbangMember);
 
 		chatWriter.updateLastReadChat(chatRoom, darakbangMember, request.lastReadChatId());
 	}
-
-	public void openChatRoom(Long darakbangId, Long moimId, DarakbangMember darakbangMember) {
-		Moim moim = moimFinder.read(moimId, darakbangId);
-		moimWriter.openChatByMoimer(moim, darakbangMember);
-		chatRoomWriter.append(moimId, darakbangId, ChatRoomType.MOIM);
-	}
 }

backend/src/main/java/mouda/backend/chat/domain/Attributes.java

@@ -0,0 +1,7 @@
+package mouda.backend.chat.domain;
+
+import java.util.Map;
+
+public interface Attributes {
+	Map<String, Object> getAttributes();
+}

backend/src/main/java/mouda/backend/chat/domain/BetAttributes.java

@@ -0,0 +1,36 @@
+package mouda.backend.chat.domain;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import lombok.Getter;
+
+@Getter
+public class BetAttributes implements Attributes {
+
+    private final String title;
+    private final boolean isLoser;
+    private final long betId;
+    private final Participant loser;
+
+    public BetAttributes(String title, Boolean isLoser, Long betId, Participant loser) {
+        this.title = title;
+        this.isLoser = isLoser;
+        this.betId = betId;
+        this.loser = loser;
+    }
+
+    @Override
+    public Map<String, Object> getAttributes() {
+        Map<String, Object> attributes = new HashMap<>();
+        attributes.put("title", title);
+        attributes.put("isLoser", isLoser);
+        attributes.put("betId", betId);
+        attributes.put("loser", Map.of(
+            "nickname", loser.getNickname(),
+            "profile", loser.getProfile(),
+            "role", loser.getRole()
+        ));
+        return attributes;
+    }
+}

backend/src/main/java/mouda/backend/chat/domain/ChatRoomDetails.java

@@ -0,0 +1,29 @@
+package mouda.backend.chat.domain;
+
+import java.util.List;
+import java.util.Map;
+
+import lombok.Getter;
+
+@Getter
+public class ChatRoomDetails {
+	private final long id;
+	private final ChatRoomType chatRoomType;
+	private final Attributes attributes;
+	private final List<Participant> participants;
+
+	public ChatRoomDetails(long id, ChatRoomType chatRoomType, Attributes attributes, List<Participant> participants) {
+		this.id = id;
+		this.chatRoomType = chatRoomType;
+		this.attributes = attributes;
+		this.participants = participants;
+	}
+
+	public String getTitle() {
+		return (String)getAttributes().get("title");
+	}
+
+	public Map<String, Object> getAttributes() {
+		return attributes.getAttributes();
+	}
+}

backend/src/main/java/mouda/backend/chat/domain/MoimAttributes.java

@@ -0,0 +1,44 @@
+package mouda.backend.chat.domain;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import lombok.Getter;
+
+@Getter
+public class MoimAttributes implements Attributes {
+
+	private final String title;
+	private final String place;
+	private final Boolean isMoimer;
+	private final Boolean isStarted;
+	private final String description;
+	private final String date;
+	private final String time;
+	private final Long moimId;
+
+	public MoimAttributes(String title, String place, Boolean isMoimer, Boolean isStarted, String description, String date, String time, Long moimId) {
+		this.title = title;
+		this.place = place;
+		this.isMoimer = isMoimer;
+		this.isStarted = isStarted;
+		this.description = description;
+		this.date = date;
+		this.time = time;
+		this.moimId = moimId;
+	}
+
+	@Override
+	public Map<String, Object> getAttributes() {
+		Map<String, Object> attributes = new HashMap<>();
+		attributes.put("title", title);
+		attributes.put("place", place);
+		attributes.put("isMoimer", isMoimer);
+		attributes.put("isStarted", isStarted);
+		attributes.put("description", description);
+		attributes.put("date", date);
+		attributes.put("time", time);
+		attributes.put("moimId", moimId);
+		return attributes;
+	}
+}

backend/src/main/java/mouda/backend/chat/domain/Participant.java

@@ -0,0 +1,34 @@
+package mouda.backend.chat.domain;
+
+import java.util.Objects;
+
+import lombok.Getter;
+
+@Getter
+public class Participant {
+
+	private final String nickname;
+	private final String profile;
+	private final String role;
+
+	public Participant(String nickname, String profile, String role) {
+		this.nickname = nickname;
+		this.profile = profile;
+		this.role = role;
+	}
+
+	@Override
+	public boolean equals(Object o) {
+		if (this == o)
+			return true;
+		if (o == null || getClass() != o.getClass())
+			return false;
+		Participant that = (Participant)o;
+		return Objects.equals(nickname, that.nickname) && Objects.equals(profile, that.profile) && Objects.equals(role, that.role);
+	}
+
+	@Override
+	public int hashCode() {
+		return Objects.hash(nickname, profile, role);
+	}
+}

backend/src/main/java/mouda/backend/chat/implement/AttributeManager.java

@@ -0,0 +1,13 @@
+package mouda.backend.chat.implement;
+
+import mouda.backend.chat.domain.Attributes;
+import mouda.backend.chat.domain.ChatRoom;
+import mouda.backend.chat.domain.ChatRoomType;
+import mouda.backend.darakbangmember.domain.DarakbangMember;
+
+public interface AttributeManager {
+
+	boolean support(ChatRoomType chatRoomType);
+
+	Attributes create(ChatRoom chatRoom, DarakbangMember darakbangMember);
+}

backend/src/main/java/mouda/backend/chat/implement/AttributeManagerRegistry.java

@@ -0,0 +1,22 @@
+package mouda.backend.chat.implement;
+
+import java.util.List;
+
+import org.springframework.stereotype.Component;
+
+import lombok.RequiredArgsConstructor;
+import mouda.backend.chat.domain.ChatRoomType;
+
+@Component
+@RequiredArgsConstructor
+public class AttributeManagerRegistry {
+
+	private final List<AttributeManager> attributeManagers;
+
+	public AttributeManager getManager(ChatRoomType chatRoomType) {
+		return attributeManagers.stream()
+			.filter(attributeManager -> attributeManager.support(chatRoomType))
+			.findFirst()
+			.orElseThrow(IllegalArgumentException::new);
+	}
+}

backend/src/main/java/mouda/backend/chat/implement/BetAttributeManager.java

@@ -0,0 +1,47 @@
+package mouda.backend.chat.implement;
+
+import org.springframework.stereotype.Component;
+
+import lombok.RequiredArgsConstructor;
+import mouda.backend.bet.domain.Bet;
+import mouda.backend.bet.domain.BetRole;
+import mouda.backend.bet.implement.BetFinder;
+import mouda.backend.bet.infrastructure.BetDarakbangMemberRepository;
+import mouda.backend.chat.domain.Attributes;
+import mouda.backend.chat.domain.BetAttributes;
+import mouda.backend.chat.domain.ChatRoom;
+import mouda.backend.chat.domain.ChatRoomType;
+import mouda.backend.chat.domain.Participant;
+import mouda.backend.darakbangmember.domain.DarakbangMember;
+
+@Component
+@RequiredArgsConstructor
+public class BetAttributeManager implements AttributeManager {
+
+    private final BetFinder betFinder;
+    private final BetDarakbangMemberRepository betDarakbangMemberRepository;
+
+    @Override
+    public boolean support(ChatRoomType chatRoomType) {
+        return chatRoomType == ChatRoomType.BET;
+    }
+
+    @Override
+    public Attributes create(ChatRoom chatRoom, DarakbangMember darakbangMember) {
+        Bet bet = betFinder.find(darakbangMember.getDarakbang().getId(), chatRoom.getTargetId());
+        boolean isLoser = bet.isLoser(darakbangMember.getId());
+        Participant loser = getLoser(bet, darakbangMember.getId());
+        return new BetAttributes(bet.getBetDetails().getTitle(), isLoser, bet.getId(), loser);
+    }
+
+    private Participant getLoser(Bet bet, long requestDarakbangMemberId) {
+        DarakbangMember darakbangMember = betDarakbangMemberRepository.findByBetIdAndDarakbangMemberId(bet.getId(), bet.getLoserId())
+            .orElseThrow(IllegalArgumentException::new).getDarakbangMember(); // TODO: 예외 처리 리팩토링
+        BetRole betRole = getBetRole(requestDarakbangMemberId, bet.getMoimerId());
+        return new Participant(darakbangMember.getNickname(), darakbangMember.getProfile(), betRole.toString());
+    }
+
+    private BetRole getBetRole(long requestDarakbangMemberId, long moimerId) {
+        return moimerId == requestDarakbangMemberId ? BetRole.MOIMER : BetRole.MOIMEE;
+    }
+}