feat(chat): add session messages view and active state tracking

Implement agent session messages display component and track active topic/session state
Add AgentSessionMessages component and integrate with chat view
Update topic and session selection to set active state in store

src/renderer/src/pages/home/Chat.tsx

@@ -6,6 +6,7 @@ import PromptPopup from '@renderer/components/Popups/PromptPopup'
 import { QuickPanelProvider } from '@renderer/components/QuickPanel'
 import { useAssistant } from '@renderer/hooks/useAssistant'
 import { useChatContext } from '@renderer/hooks/useChatContext'
+import { useRuntime } from '@renderer/hooks/useRuntime'
 import { useNavbarPosition, useSettings } from '@renderer/hooks/useSettings'
 import { useShortcut } from '@renderer/hooks/useShortcuts'
 import { useShowAssistants, useShowTopics } from '@renderer/hooks/useStore'
@@ -23,6 +24,7 @@ import styled from 'styled-components'
 
 import ChatNavbar from './ChatNavbar'
 import Inputbar from './Inputbar/Inputbar'
+import AgentSessionMessages from './Messages/AgentSessionMessages'
 import ChatNavigation from './Messages/ChatNavigation'
 import Messages from './Messages/Messages'
 import Tabs from './Tabs'
@@ -44,6 +46,8 @@ const Chat: FC<Props> = (props) => {
   const { isMultiSelectMode } = useChatContext(props.activeTopic)
   const { isTopNavbar } = useNavbarPosition()
   const chatMaxWidth = useChatMaxWidth()
+  const { chat } = useRuntime()
+  const { activeTopicOrSession, activeAgentId, activeSessionId } = chat
 
   const mainRef = React.useRef<HTMLDivElement>(null)
   const contentSearchRef = React.useRef<ContentSearchRef>(null)
@@ -136,6 +140,17 @@ const Chat: FC<Props> = (props) => {
     ? 'calc(100vh - var(--navbar-height) - var(--navbar-height) - 12px)'
     : 'calc(100vh - var(--navbar-height))'
 
+  const SessionMessages = () => {
+    if (activeAgentId === null) {
+      return <div> Active Agent ID is invalid.</div>
+    }
+    const sessionId = activeSessionId[activeAgentId]
+    if (!sessionId) {
+      return <div> Active Session ID is invalid.</div>
+    }
+    return <AgentSessionMessages agentId={activeAgentId} sessionId={sessionId} />
+  }
+
   return (
     <Container id="chat" className={classNames([messageStyle, { 'multi-select-mode': isMultiSelectMode }])}>
       {isTopNavbar && (
@@ -156,23 +171,28 @@ const Chat: FC<Props> = (props) => {
           justify="space-between"
           style={{ maxWidth: chatMaxWidth, height: mainHeight }}>
           <QuickPanelProvider>
-            <Messages
-              key={props.activeTopic.id}
-              assistant={assistant}
-              topic={props.activeTopic}
-              setActiveTopic={props.setActiveTopic}
-              onComponentUpdate={messagesComponentUpdateHandler}
-              onFirstUpdate={messagesComponentFirstUpdateHandler}
-            />
-            <ContentSearch
-              ref={contentSearchRef}
-              searchTarget={mainRef as React.RefObject<HTMLElement>}
-              filter={contentSearchFilter}
-              includeUser={filterIncludeUser}
-              onIncludeUserChange={userOutlinedItemClickHandler}
-            />
-            {messageNavigation === 'buttons' && <ChatNavigation containerId="messages" />}
-            <Inputbar assistant={assistant} setActiveTopic={props.setActiveTopic} topic={props.activeTopic} />
+            {activeTopicOrSession === 'topic' && (
+              <>
+                <Messages
+                  key={props.activeTopic.id}
+                  assistant={assistant}
+                  topic={props.activeTopic}
+                  setActiveTopic={props.setActiveTopic}
+                  onComponentUpdate={messagesComponentUpdateHandler}
+                  onFirstUpdate={messagesComponentFirstUpdateHandler}
+                />
+                <ContentSearch
+                  ref={contentSearchRef}
+                  searchTarget={mainRef as React.RefObject<HTMLElement>}
+                  filter={contentSearchFilter}
+                  includeUser={filterIncludeUser}
+                  onIncludeUserChange={userOutlinedItemClickHandler}
+                />
+                {messageNavigation === 'buttons' && <ChatNavigation containerId="messages" />}
+                <Inputbar assistant={assistant} setActiveTopic={props.setActiveTopic} topic={props.activeTopic} />
+              </>
+            )}
+            {activeTopicOrSession === 'session' && <SessionMessages />}
             {isMultiSelectMode && <MultiSelectActionPopup topic={props.activeTopic} />}
           </QuickPanelProvider>
         </Main>

src/renderer/src/pages/home/HomePage.tsx

@@ -5,6 +5,7 @@ import { useActiveTopic } from '@renderer/hooks/useTopic'
 import { EVENT_NAMES, EventEmitter } from '@renderer/services/EventService'
 import NavigationService from '@renderer/services/NavigationService'
 import { newMessagesActions } from '@renderer/store/newMessage'
+import { setActiveTopicOrSessionAction } from '@renderer/store/runtime'
 import { Assistant, Topic } from '@renderer/types'
 import { MIN_WINDOW_HEIGHT, MIN_WINDOW_WIDTH, SECOND_MIN_WINDOW_WIDTH } from '@shared/config/constant'
 import { AnimatePresence, motion } from 'motion/react'
@@ -52,6 +53,7 @@ const HomePage: FC = () => {
       startTransition(() => {
         _setActiveTopic((prev) => (newTopic?.id === prev.id ? prev : newTopic))
         dispatch(newMessagesActions.setTopicFulfilled({ topicId: newTopic.id, fulfilled: false }))
+        dispatch(setActiveTopicOrSessionAction('topic'))
       })
     },
     [_setActiveTopic, dispatch]

src/renderer/src/pages/home/Messages/AgentSessionMessages.tsx

@@ -0,0 +1,58 @@
+import ContextMenu from '@renderer/components/ContextMenu'
+import Scrollbar from '@renderer/components/Scrollbar'
+import { useSession } from '@renderer/hooks/agents/useSession'
+import { memo } from 'react'
+import styled from 'styled-components'
+
+import NarrowLayout from './NarrowLayout'
+
+type Props = {
+  agentId: string
+  sessionId: string
+}
+
+const AgentSessionMessages: React.FC<Props> = ({ agentId, sessionId }) => {
+  const { messages } = useSession(agentId, sessionId)
+
+  return (
+    <MessagesContainer id="messages" className="messages-container">
+      <NarrowLayout style={{ display: 'flex', flexDirection: 'column-reverse' }}>
+        <ContextMenu>
+          <ScrollContainer>
+            {messages.map((message) => {
+              const content = message.content.content
+              if (typeof content === 'string') {
+                return <div key={message.id}>{content}</div>
+              } else {
+                return 'Not string content'
+              }
+            })}
+          </ScrollContainer>
+        </ContextMenu>
+      </NarrowLayout>
+    </MessagesContainer>
+  )
+}
+
+const ScrollContainer = styled.div`
+  display: flex;
+  flex-direction: column-reverse;
+  padding: 10px 10px 20px;
+  .multi-select-mode & {
+    padding-bottom: 60px;
+  }
+`
+
+interface ContainerProps {
+  $right?: boolean
+}
+
+const MessagesContainer = styled(Scrollbar)<ContainerProps>`
+  display: flex;
+  flex-direction: column-reverse;
+  overflow-x: hidden;
+  z-index: 1;
+  position: relative;
+`
+
+export default memo(AgentSessionMessages)

src/renderer/src/pages/home/Tabs/components/Sessions.tsx

@@ -2,7 +2,7 @@ import { Button, Spinner } from '@heroui/react'
 import { SessionModal } from '@renderer/components/Popups/agent/SessionModal'
 import { useSessions } from '@renderer/hooks/agents/useSessions'
 import { useAppDispatch } from '@renderer/store'
-import { setActiveSessionIdAction } from '@renderer/store/runtime'
+import { setActiveSessionIdAction, setActiveTopicOrSessionAction } from '@renderer/store/runtime'
 import { Plus } from 'lucide-react'
 import { memo, useCallback } from 'react'
 import { useTranslation } from 'react-i18next'
@@ -23,6 +23,7 @@ const Sessions: React.FC<SessionsProps> = ({ agentId }) => {
   const setActiveSessionId = useCallback(
     (agentId: string, sessionId: string | null) => {
       dispatch(setActiveSessionIdAction({ agentId, sessionId }))
+      dispatch(setActiveTopicOrSessionAction('session'))
     },
     [dispatch]
   )