feat(chat-room) 채팅방 API

- 생성, 입장, 이전 메시지 로딩, 메시지 전송 API 추가

SodaLive/Sources/Chat/Talk/Room/ChatRoomRepository.swift

@@ -12,4 +12,27 @@ import Moya
 
 class ChatRoomRepository {
     private let talkApi = MoyaProvider<TalkApi>()
+    
+    /**
+     * 채팅방 입장: 서버 캐릭터 정보 + 최신 메시지 수신
+     */
+    func enterChatRoom(roomId: Int, characterImageId: Int?) -> AnyPublisher<Response, MoyaError> {
+        return talkApi.requestPublisher(.enterChatRoom(roomId: roomId, characterImageId: characterImageId))
+    }
+    
+    /**
+     * 점진적 메시지 로딩: 커서 기반으로 이전 메시지를 조회
+     */
+    func loadMoreMessages(roomId: Int, cursor: Int?) -> AnyPublisher<Response, MoyaError> {
+        return talkApi.requestPublisher(.getChatRoomMessages(roomId: roomId, cursor: cursor, limit: 20))
+    }
+    
+    /**
+     * 메시지 전송 API 호출
+     * - 성공 시: 서버에서 내려온 메시지를 로컬에 반영한다.
+     * - 반환: 서버에서 내려온 메시지(ServerChatMessage) (대개 AI 응답일 것으로 가정)
+     */
+    func sendMessage(roomId: Int, message: String) -> AnyPublisher<Response, MoyaError> {
+        return talkApi.requestPublisher(.sendMessage(roomId: roomId, request: SendChatMessageRequest(message: message)))
+    }
 }

SodaLive/Sources/Chat/Talk/Room/Create/CreateChatRoomRequest.swift

@@ -6,5 +6,5 @@
 //
 
 struct CreateChatRoomRequest: Encodable {
-    let characterId: Int64
+    let characterId: Int
 }

SodaLive/Sources/Chat/Talk/TalkApi.swift

@@ -10,6 +10,10 @@ import Moya
 
 enum TalkApi {
     case getTalkRooms
+    case createChatRoom(request: CreateChatRoomRequest)
+    case enterChatRoom(roomId: Int, characterImageId: Int?)
+    case sendMessage(roomId: Int, request: SendChatMessageRequest)
+    case getChatRoomMessages(roomId: Int, cursor: Int?, limit: Int)
 }
 
 extension TalkApi: TargetType {
@@ -19,6 +23,18 @@ extension TalkApi: TargetType {
         switch self {
         case .getTalkRooms:
             return "/api/chat/room/list"
+        
+        case .createChatRoom:
+            return "/api/chat/room/create"
+        
+        case .enterChatRoom(let roomId, _):
+            return "/api/chat/room/\(roomId)/enter"
+        
+        case .sendMessage(let roomId, _):
+            return "/api/chat/room/\(roomId)/send"
+        
+        case .getChatRoomMessages(let roomId, _, _):
+            return "/api/chat/room/\(roomId)/messages"
         }
     }
     
@@ -26,6 +42,18 @@ extension TalkApi: TargetType {
         switch self {
         case .getTalkRooms:
             return .get
+            
+        case .createChatRoom:
+            return .post
+        
+        case .enterChatRoom:
+            return .get
+            
+        case .sendMessage:
+            return .post
+            
+        case .getChatRoomMessages:
+            return .get
         }
     }
     
@@ -33,6 +61,36 @@ extension TalkApi: TargetType {
         switch self {
         case .getTalkRooms:
             return .requestPlain
+            
+        case .createChatRoom(let request):
+            return .requestJSONEncodable(request)
+        
+        case .enterChatRoom(_, let characterImageId):
+            var parameters: [String: Any] = [:]
+            
+            if let characterImageId = characterImageId {
+                parameters["characterImageId"] = characterImageId
+            }
+            
+            return .requestParameters(
+                parameters: parameters,
+                encoding: URLEncoding.queryString
+            )
+        
+        case .sendMessage(_, request: let request):
+            return .requestJSONEncodable(request)
+        
+        case .getChatRoomMessages(_, let cursor, let limit):
+            var parameters: [String: Any] = ["limit": limit]
+            
+            if let cursor = cursor {
+                parameters["cursor"] = cursor
+            }
+            
+            return .requestParameters(
+                parameters: parameters,
+                encoding: URLEncoding.queryString
+            )
         }
     }