feat(server): allow multiple session attach to doc (#12933)

fix AI-236

packages/backend/server/src/plugins/copilot/resolver.ts

@@ -235,6 +235,12 @@ class CopilotHistoriesType implements Partial<ChatHistory> {
   @Field(() => String)
   sessionId!: string;
 
+  @Field(() => String)
+  workspaceId!: string;
+
+  @Field(() => String, { nullable: true })
+  docId!: string | null;
+
   @Field(() => Boolean)
   pinned!: boolean;
 
@@ -254,6 +260,9 @@ class CopilotHistoriesType implements Partial<ChatHistory> {
 
   @Field(() => Date)
   createdAt!: Date;
+
+  @Field(() => Date)
+  updatedAt!: Date;
 }
 
 @ObjectType('CopilotQuota')

packages/backend/server/src/plugins/copilot/session.ts

@@ -298,13 +298,16 @@ export class ChatSessionService {
     const histories = await Promise.all(
       sessions.map(
         async ({
-          id,
           userId: uid,
+          id,
+          workspaceId,
+          docId,
           pinned,
           promptName,
           tokenCost,
           messages,
           createdAt,
+          updatedAt,
         }) => {
           try {
             const prompt = await this.prompt.get(promptName);
@@ -341,10 +344,13 @@ export class ChatSessionService {
 
               return {
                 sessionId: id,
+                workspaceId,
+                docId,
                 pinned,
                 action: prompt.action || null,
                 tokens: tokenCost,
                 createdAt,
+                updatedAt,
                 messages: preload.concat(ret.data).map(m => ({
                   ...m,
                   attachments: m.attachments

packages/backend/server/src/plugins/copilot/types.ts

@@ -47,11 +47,14 @@ export type ChatMessage = z.infer<typeof ChatMessageSchema>;
 export const ChatHistorySchema = z
   .object({
     sessionId: z.string(),
+    workspaceId: z.string(),
+    docId: z.string().nullable(),
     pinned: z.boolean(),
     action: z.string().nullable(),
     tokens: z.number(),
     messages: z.array(ChatMessageSchema),
     createdAt: z.date(),
+    updatedAt: z.date(),
   })
   .strict();