feat: update feedback handling to support null values and enhance message retrieval with user feedback

app/composables/useAgentChat.ts

@@ -503,14 +503,15 @@ export function useAgentChat(options: UseAgentChatOptions) {
 
   async function sendFeedback(messageId: string, feedback: "like" | "dislike") {
     if (!auth.loggedIn.value) return;
+    const msg = messages.value.find((m) => m.id === messageId);
+    const newFeedback = msg?.feedback === feedback ? null : feedback;
     try {
       await $fetch("/api/agent/feedback", {
         method: "POST",
-        body: { messageId, feedback },
+        body: { messageId, feedback: newFeedback },
       });
-      const msg = messages.value.find((m) => m.id === messageId);
       if (msg) {
-        msg.feedback = msg.feedback === feedback ? null : feedback;
+        msg.feedback = newFeedback;
       }
     } catch {
     }

server/api/agent/feedback.post.ts

@@ -15,11 +15,11 @@ export default defineWrappedResponseHandler(async (event) => {
   const body = await readBody(event);
   const { messageId, feedback, comment } = body as {
     messageId: string;
-    feedback: "like" | "dislike";
+    feedback: "like" | "dislike" | null;
     comment?: string;
   };
 
-  if (!messageId || !feedback || !["like", "dislike"].includes(feedback)) {
+  if (!messageId || (feedback !== null && !["like", "dislike"].includes(feedback))) {
     return R.error("参数无效", null);
   }
 
@@ -39,6 +39,15 @@ export default defineWrappedResponseHandler(async (event) => {
     .where(and(eq(agentMessageFeedback.messageId, messageId), eq(agentMessageFeedback.userId, user.id)))
     .limit(1);
 
+  if (feedback === null) {
+    if (existing) {
+      await dbGlobal
+        .delete(agentMessageFeedback)
+        .where(eq(agentMessageFeedback.id, existing.id));
+    }
+    return R.success({ messageId, feedback: null });
+  }
+
   if (existing) {
     await dbGlobal
       .update(agentMessageFeedback)

server/api/agent/sessions/[id]/messages.get.ts

@@ -19,6 +19,6 @@ export default defineWrappedResponseHandler(async (event) => {
   const before = query.before ? Number(query.before) : undefined;
   const limit = Number(query.limit) || 50;
 
-  const messages = await getMessagesBySession(id, { before, limit });
+  const messages = await getMessagesBySession(id, { before, limit, userId: identity.userId });
   return R.success({ messages, hasMore: messages.length === limit });
 });

server/service/agent/session.ts

@@ -1,7 +1,7 @@
 import { dbGlobal } from "drizzle-pkg/lib/db";
 import { agentSessions, agentMessages, agentMessageFeedback } from "drizzle-pkg/lib/schema/agent";
 import { eq, desc, asc, and, lt, isNull, sql, max } from "drizzle-orm";
-import type { AgentSessionRow, AgentMessageRow } from "./types";
+import type { AgentSessionRow, AgentMessageRow, AgentMessageWithFeedback } from "./types";
 
 export async function createSession(params: {
   userId?: number | null;
@@ -118,28 +118,47 @@ export async function softDeleteSession(id: string): Promise<void> {
 
 export async function getMessagesBySession(
   sessionId: string,
-  params?: { before?: number; limit?: number; latest?: boolean },
+  params?: { before?: number; limit?: number; latest?: boolean; userId?: number | null },
-): Promise<AgentMessageRow[]> {
+): Promise<AgentMessageWithFeedback[]> {
-  const { before, limit = 50, latest = false } = params ?? {};
+  const { before, limit = 50, latest = false, userId = null } = params ?? {};
   const conditions = [eq(agentMessages.sessionId, sessionId)];
   if (before !== undefined) {
     conditions.push(lt(agentMessages.sortOrder, before));
   }
-  if (latest) {
+
-    const rows = await dbGlobal
+  const baseQuery = () =>
-      .select()
+    dbGlobal
+      .select({
+        message: agentMessages,
+        feedback: agentMessageFeedback.feedback,
+      })
       .from(agentMessages)
-      .where(and(...conditions))
+      .leftJoin(
+        agentMessageFeedback,
+        and(
+          eq(agentMessageFeedback.messageId, agentMessages.id),
+          userId ? eq(agentMessageFeedback.userId, userId) : sql`false`,
+        ),
+      )
+      .where(and(...conditions));
+
+  if (latest) {
+    const rows = await baseQuery()
       .orderBy(desc(agentMessages.sortOrder))
       .limit(limit);
-    return rows.reverse();
+    const reversed = rows.reverse();
+    return reversed.map((r) => ({
+      ...r.message,
+      feedback: (r.feedback ?? null) as "like" | "dislike" | null,
+    }));
   }
-  return dbGlobal
+  const rows = await baseQuery()
-    .select()
-    .from(agentMessages)
-    .where(and(...conditions))
     .orderBy(asc(agentMessages.sortOrder))
     .limit(limit);
+  return rows.map((r) => ({
+    ...r.message,
+    feedback: (r.feedback ?? null) as "like" | "dislike" | null,
+  }));
 }
 
 export async function getMaxSortOrder(sessionId: string): Promise<number> {

server/service/agent/types.ts

@@ -4,6 +4,10 @@ export type AgentSessionRow = typeof agentSessions.$inferSelect;
 export type AgentMessageRow = typeof agentMessages.$inferSelect;
 export type AgentMessageFeedbackRow = typeof agentMessageFeedback.$inferSelect;
 
+export interface AgentMessageWithFeedback extends AgentMessageRow {
+  feedback: "like" | "dislike" | null;
+}
+
 export interface AgentIdentity {
   userId: number | null;
   tempToken: string | null;