feat(chat): 채팅방 UI 모델 매핑을 추가한다

app/src/main/java/kr/co/vividnext/sodalive/v2/main/chat/model/ChatRoomMappers.kt

@@ -0,0 +1,24 @@
+package kr.co.vividnext.sodalive.v2.main.chat.model
+
+import android.content.Context
+import kr.co.vividnext.sodalive.v2.main.chat.data.ChatRoomListItemResponse
+
+fun ChatRoomListItemResponse.toUiItem(context: Context): ChatRoomListUiItem? {
+    val type = when (chatType) {
+        ChatRoomType.AI.name -> ChatRoomType.AI
+        ChatRoomType.DM.name -> ChatRoomType.DM
+        else -> return null
+    }
+
+    return ChatRoomListUiItem(
+        roomId = roomId,
+        chatType = type,
+        targetName = targetName,
+        targetImageUrl = targetImageUrl,
+        lastMessage = lastMessage,
+        lastMessageTimeText = formatChatRoomLastMessageTime(context, lastMessageAt),
+        showDirectBadge = type == ChatRoomType.DM
+    )
+}
+
+fun List<ChatRoomListItemResponse>.toUiItems(context: Context): List<ChatRoomListUiItem> = mapNotNull { it.toUiItem(context) }

app/src/main/java/kr/co/vividnext/sodalive/v2/main/chat/model/ChatRoomUiModels.kt

@@ -0,0 +1,29 @@
+package kr.co.vividnext.sodalive.v2.main.chat.model
+
+enum class ChatRoomType {
+    AI,
+    DM
+}
+
+data class ChatRoomListUiItem(
+    val roomId: Long,
+    val chatType: ChatRoomType,
+    val targetName: String,
+    val targetImageUrl: String,
+    val lastMessage: String,
+    val lastMessageTimeText: String,
+    val showDirectBadge: Boolean
+)
+
+sealed class ChatRoomListUiState {
+    data object Loading : ChatRoomListUiState()
+
+    data class Content(
+        val items: List<ChatRoomListUiItem>,
+        val isAppending: Boolean = false
+    ) : ChatRoomListUiState()
+
+    data object Empty : ChatRoomListUiState()
+
+    data class Error(val message: String?) : ChatRoomListUiState()
+}