feat: upgrade AI SDK and improve chat session handling with new store implementation

.codegraph/daemon.pid

@@ -1,6 +1,6 @@
 {
-  "pid": 6400,
+  "pid": 18358,
   "version": "0.9.7",
   "socketPath": "/home/dash/code/nuxt-app/.codegraph/daemon.sock",
-  "startedAt": 1786156990118
+  "startedAt": 1786169176794
 }

app/composables/useAgentChat.ts

@@ -110,6 +110,7 @@ export function useAgentChat(options: UseAgentChatOptions) {
     try {
       res = await fetch(`/api/agent/chat/stream?sessionId=${encodeURIComponent(sid)}`, {
         method: "GET",
+        credentials: "include",
       });
     } catch {
       return;
@@ -456,6 +457,7 @@ export function useAgentChat(options: UseAgentChatOptions) {
         headers: { "Content-Type": "application/json" },
         body: JSON.stringify(buildRequestBody(trimmed, opts)),
         signal: abortController.signal,
+        credentials: "include",
       });
 
       if (!auth.loggedIn.value) {
@@ -578,6 +580,7 @@ export function useAgentChat(options: UseAgentChatOptions) {
           approvalReason: reason,
         }),
         signal: abortController.signal,
+        credentials: "include",
       });
 
       if (!res.ok) {

app/composables/useAgentChatStore.ts

@@ -0,0 +1,173 @@
+import { ref, computed, type Ref, type ComputedRef } from "vue";
+import { useAgentChat, type AgentMessage, type UseAgentChatOptions } from "./useAgentChat";
+import { useAgentRateLimit } from "./useAgentRateLimit";
+
+export interface AgentChatInstance {
+  messages: Ref<AgentMessage[]>;
+  isLoading: Ref<boolean>;
+  hasPendingApproval: ComputedRef<boolean>;
+  errorMessage: Ref<string>;
+  isStopped: Ref<boolean>;
+  rateLimit: ReturnType<typeof useAgentRateLimit>;
+  send: ReturnType<typeof useAgentChat>["send"];
+  stopGeneration: ReturnType<typeof useAgentChat>["stopGeneration"];
+  clear: ReturnType<typeof useAgentChat>["clear"];
+  loadMessages: ReturnType<typeof useAgentChat>["loadMessages"];
+  respondToApproval: ReturnType<typeof useAgentChat>["respondToApproval"];
+  sendFeedback: ReturnType<typeof useAgentChat>["sendFeedback"];
+}
+
+export interface UseAgentChatStoreOptions {
+  modelId: () => number | null;
+  enableThinking: () => boolean;
+  enableTools: () => boolean;
+  onStreamComplete?: (sessionId: string) => void;
+}
+
+export function useAgentChatStore(storeOptions: UseAgentChatStoreOptions) {
+  const instances = new Map<string, AgentChatInstance>();
+  const currentSessionId = ref<string | null>(null);
+
+  const loadedSessionIds = ref<Set<string>>(new Set());
+
+  function createInstance(sid: string): AgentChatInstance {
+    const options: UseAgentChatOptions = {
+      sessionId: () => sid,
+      modelId: storeOptions.modelId,
+      enableThinking: storeOptions.enableThinking,
+      enableTools: storeOptions.enableTools,
+      onStreamComplete: () => {
+        storeOptions.onStreamComplete?.(sid);
+      },
+    };
+    const chat = useAgentChat(options);
+    return chat;
+  }
+
+  function getInstance(sid: string): AgentChatInstance {
+    let inst = instances.get(sid);
+    if (!inst) {
+      inst = createInstance(sid);
+      instances.set(sid, inst);
+    }
+    return inst;
+  }
+
+  function removeInstance(sid: string) {
+    const inst = instances.get(sid);
+    if (inst) {
+      inst.stopGeneration();
+      inst.clear();
+      instances.delete(sid);
+    }
+    loadedSessionIds.value.delete(sid);
+  }
+
+  const currentInstance = computed<AgentChatInstance | null>(() => {
+    const sid = currentSessionId.value;
+    if (!sid) return null;
+    return getInstance(sid);
+  });
+
+  const messages = computed(() => currentInstance.value?.messages.value ?? []);
+  const isLoading = computed(() => currentInstance.value?.isLoading.value ?? false);
+  const hasPendingApproval = computed(() => currentInstance.value?.hasPendingApproval.value ?? false);
+  const errorMessage = computed(() => currentInstance.value?.errorMessage.value ?? "");
+  const isStopped = computed(() => currentInstance.value?.isStopped.value ?? false);
+  const fallbackRateLimit = useAgentRateLimit();
+  const rateLimit = computed(() => currentInstance.value?.rateLimit ?? fallbackRateLimit);
+
+  const anyLoading = computed(() => {
+    for (const inst of instances.values()) {
+      if (inst.isLoading.value) return true;
+    }
+    return false;
+  });
+
+  function getLoadingSessionIds(): string[] {
+    const ids: string[] = [];
+    for (const [sid, inst] of instances) {
+      if (inst.isLoading.value) ids.push(sid);
+    }
+    return ids;
+  }
+
+  async function loadMessages(sid: string) {
+    const inst = getInstance(sid);
+    loadedSessionIds.value.add(sid);
+    await inst.loadMessages(sid);
+  }
+
+  async function send(content: string, opts?: { editMessageId?: string; regenerate?: boolean }) {
+    const sid = currentSessionId.value;
+    if (!sid) return;
+    const inst = getInstance(sid);
+    await inst.send(content, opts);
+  }
+
+  async function respondToApproval(toolCallId: string, approved: boolean, reason?: string) {
+    const sid = currentSessionId.value;
+    if (!sid) return;
+    const inst = getInstance(sid);
+    await inst.respondToApproval(toolCallId, approved, reason);
+  }
+
+  async function sendFeedback(messageId: string, feedback: "like" | "dislike") {
+    const sid = currentSessionId.value;
+    if (!sid) return;
+    const inst = getInstance(sid);
+    await inst.sendFeedback(messageId, feedback);
+  }
+
+  function stopGeneration() {
+    const sid = currentSessionId.value;
+    if (!sid) return;
+    const inst = getInstance(sid);
+    inst.stopGeneration();
+  }
+
+  function stopAll() {
+    for (const inst of instances.values()) {
+      inst.stopGeneration();
+    }
+  }
+
+  function clear() {
+    const sid = currentSessionId.value;
+    if (!sid) return;
+    const inst = getInstance(sid);
+    inst.clear();
+  }
+
+  function setCurrentSessionId(sid: string | null) {
+    currentSessionId.value = sid;
+  }
+
+  function isSessionLoaded(sid: string): boolean {
+    return loadedSessionIds.value.has(sid);
+  }
+
+  return {
+    currentSessionId,
+    currentInstance,
+    messages,
+    isLoading,
+    hasPendingApproval,
+    errorMessage,
+    isStopped,
+    rateLimit,
+    anyLoading,
+    getLoadingSessionIds,
+    loadMessages,
+    send,
+    respondToApproval,
+    sendFeedback,
+    stopGeneration,
+    stopAll,
+    clear,
+    setCurrentSessionId,
+    isSessionLoaded,
+    removeInstance,
+    getInstance,
+  };
+}

app/pages/index.vue

@@ -1,6 +1,6 @@
 <script setup lang="ts">
 import { useAgentSessions } from "~/composables/useAgentSessions";
-import { useAgentChat } from "~/composables/useAgentChat";
+import { useAgentChatStore } from "~/composables/useAgentChatStore";
 import { useAuthSession } from "~/composables/useAuthSession";
 
 definePageMeta({
@@ -80,13 +80,11 @@ const enableTools = computed({
   },
 });
 
-const chat = useAgentChat({
+const chat = useAgentChatStore({
-  sessionId: () => sessions.currentSessionId.value,
   modelId: () => currentModelId.value,
   enableThinking: () => false,
   enableTools: () => enableTools.value,
-  onStreamComplete: () => {
+  onStreamComplete: (sid) => {
-    const sid = sessions.currentSessionId.value;
     if (!sid) return;
     setTimeout(() => sessions.refreshSessionTitle(sid), 3000);
   },
@@ -95,8 +93,8 @@ const chat = useAgentChat({
 const rateLimitInfo = computed(() => {
   if (auth.loggedIn.value) return undefined;
   return {
-    sessionRemaining: chat.rateLimit.sessionRemaining.value,
+    sessionRemaining: chat.rateLimit.value.sessionRemaining.value,
-    ipRemaining: chat.rateLimit.ipRemaining.value,
+    ipRemaining: chat.rateLimit.value.ipRemaining.value,
   };
 });
 
@@ -148,6 +146,7 @@ async function loadSystemPrompt() {
 watch(
   () => sessions.currentSessionId.value,
   async (sid) => {
+    chat.setCurrentSessionId(sid);
     if (sid) {
       await chat.loadMessages(sid);
     } else {
@@ -170,7 +169,8 @@ async function handleSend(content: string) {
   }
   if (sessions.currentSessionId.value) {
     const sid = sessions.currentSessionId.value;
-    const wasNewSession = chat.messages.value.filter((m) => m.role === "assistant").length === 0;
+    const inst = chat.getInstance(sid);
+    const wasNewSession = inst.messages.value.filter((m) => m.role === "assistant").length === 0;
     await chat.send(content);
     sessions.touchSessionOrder(sid);
     if (wasNewSession) {
@@ -190,6 +190,12 @@ async function handleApprove(toolCallId: string, approved: boolean) {
   await chat.respondToApproval(toolCallId, approved);
 }
 
+async function handleDeleteSession(id: string) {
+  chat.stopGeneration();
+  chat.removeInstance(id);
+  await sessions.deleteSession(id);
+}
+
 async function handleFeedback(messageId: string, feedback: "like" | "dislike") {
   await chat.sendFeedback(messageId, feedback);
 }
@@ -229,7 +235,7 @@ onMounted(async () => {
     @new-session="sessions.newSession(); if (isMobile) mobileSidebarOpen = false"
     @select="sessions.selectSession($event); if (isMobile) mobileSidebarOpen = false"
     @rename="sessions.renameSession"
-    @delete="sessions.deleteSession"
+    @delete="handleDeleteSession"
     @login="handleLogin"
     @toggle="isMobile ? (mobileSidebarOpen = !mobileSidebarOpen) : (sidebarCollapsed = !sidebarCollapsed)"
     @close="mobileSidebarOpen = false"

server/api/agent/chat/index.post.ts

@@ -433,7 +433,7 @@ export default defineEventHandler(async (event) => {
     model: languageModel,
     system: systemPrompt || undefined,
     messages: modelMessages,
-    maxOutputTokens: model.maxTokens || undefined,
+    maxOutputTokens: model.maxTokens && model.maxTokens >= 1 && model.maxTokens <= 393216 ? model.maxTokens : undefined,
     ...(Object.keys(effectiveTools).length > 0
       ? { tools: effectiveTools, stopWhen: stepCountIs(8) }
       : {}),

server/api/llm/chat/index.post.ts

@@ -94,7 +94,7 @@ export default defineEventHandler(async (event) => {
   const result = streamText({
     model: languageModel,
     messages: modelMessages,
-    maxOutputTokens: model.maxTokens || undefined,
+    maxOutputTokens: model.maxTokens && model.maxTokens >= 1 && model.maxTokens <= 393216 ? model.maxTokens : undefined,
     ...(tools && Object.keys(tools).length > 0
       ? { tools, stopWhen: stepCountIs(8) }
       : {}),

server/service/agent/temp-token.ts

@@ -11,7 +11,7 @@ export function generateTempToken(): string {
 export function setTempTokenCookie(event: H3Event, token: string): void {
   setCookie(event, TEMP_TOKEN_COOKIE, token, {
     httpOnly: true,
-    secure: process.env.NODE_ENV === "production",
+    secure: false, // process.env.NODE_ENV === "production",
     sameSite: "lax",
     maxAge: TEMP_TOKEN_TTL_MS / 1000,
     path: "/",

server/service/auth/cookie.ts

@@ -21,7 +21,7 @@ export function setSessionCookie(event: H3Event, sessionId: string) {
   setCookie(event, SESSION_COOKIE_NAME, sessionId, {
     httpOnly: true,
     sameSite: "lax",
-    secure: env.NODE_ENV === "production",
+    secure: false, // env.NODE_ENV === "production",
     path: SESSION_COOKIE_PATH,
     maxAge: SESSION_MAX_AGE_SECONDS,
   });