✨ feat: 助手添加默认打招呼消息

src/features/ChatDialog/index.tsx

@@ -20,7 +20,7 @@ interface DialogProps {
 const Dialog = (props: DialogProps) => {
   const { styles } = useStyles();
   const { className, style, setOpen } = props;
-  const currentChats = useSessionStore((s) => sessionSelectors.currentChats(s));
+  const currentChats = useSessionStore((s) => sessionSelectors.currentChatsWithGreetingMessage(s));
   const lastAgentChatIndex = currentChats.findLastIndex((item) => item.role === 'assistant');
   const ref = React.useRef<HTMLDivElement>(null);
   const isHovered = useHover(ref);

src/features/ChatItem/index.tsx

@@ -32,11 +32,11 @@ const Item = memo<ChatListItemProps>(({ index, id, showTitle = false, type = 'bl
   const [editing, setEditing] = useState(false);
 
   const item = useSessionStore((s) => {
-    const chats = sessionSelectors.currentChats(s);
+    const chats = sessionSelectors.currentChatsWithGreetingMessage(s);
 
     if (index >= chats.length) return;
 
-    return sessionSelectors.currentChats(s)[index];
+    return chats[index];
   }, isEqual);
 
   const [loading, updateMessageContent] = useSessionStore((s) => [

src/features/ChatList/index.tsx

@@ -19,7 +19,10 @@ const VirtualizedList = memo<VirtualizedListProps>(({ mobile }) => {
   const virtuosoRef = useRef<VirtuosoHandle>(null);
   const [atBottom, setAtBottom] = useState(true);
 
-  const data = useSessionStore((s) => ['empty', ...sessionSelectors.currentChatIDs(s)], isEqual);
+  const data = useSessionStore(
+    (s) => ['empty', ...sessionSelectors.currentChatIDsWithGreetingMessage(s)],
+    isEqual,
+  );
   const [id, chatLoading] = useSessionStore((s) => [s.activeId, !!s.chatLoadingId]);
 
   useEffect(() => {

src/store/session/selectors.ts

@@ -16,12 +16,6 @@ const sessionListIds = (s: SessionStore): string[] => {
   return sessionList.map((item) => item.agentId);
 };
 
-const currentChatIDs = (s: SessionStore): string[] => {
-  const session = currentSession(s);
-  if (!session) return [];
-  return session.messages.map((item) => item.id);
-};
-
 const currentAgent = (s: SessionStore): Agent | undefined => {
   const { activeId, localAgentList } = s;
   return localAgentList.find((item) => item.agentId === activeId);
@@ -47,6 +41,40 @@ const currentChats = (s: SessionStore): ChatMessage[] => {
   });
 };
 
+const currentChatsWithGreetingMessage = (s: SessionStore): ChatMessage[] => {
+  const data = currentChats(s);
+
+  const isBrandNewChat = data.length === 0;
+
+  if (!isBrandNewChat) return data;
+
+  const agent = currentAgent(s);
+
+  const initTime = Date.now();
+
+  console.log('agent.greeting', agent?.greeting);
+
+  const emptyGuideMessage = {
+    content: agent?.greeting || '',
+    createdAt: initTime,
+    id: 'default',
+    meta: {
+      avatar: agent?.meta.avatar,
+      title: agent?.meta.name,
+      description: agent?.meta.description,
+    },
+    role: 'assistant',
+    updatedAt: initTime,
+  } as ChatMessage;
+
+  return [emptyGuideMessage];
+};
+
+const currentChatIDsWithGreetingMessage = (s: SessionStore): string[] => {
+  const currentChats = currentChatsWithGreetingMessage(s);
+  return currentChats.map((item) => item.id);
+};
+
 const previousChats = (s: SessionStore, id: string): ChatMessage[] => {
   const chatList = currentChats(s);
   const index = chatList.findIndex((item) => item.id === id);
@@ -98,9 +126,10 @@ const isDefaultAgent = (s: SessionStore) => {
 };
 
 export const sessionSelectors = {
+  currentChatsWithGreetingMessage,
   currentAgent,
   currentAgentModel,
-  currentChatIDs,
+  currentChatIDsWithGreetingMessage,
   isDefaultAgent,
   currentChatMessage,
   currentChats,