Надёжная real-time доставка сообщений в чатах: SSE buffer, Last-Event-ID, polling fallback

server/storage/tasks.storage.ts

@@ -2,7 +2,7 @@ import { users, forms, tasks, taskMessages, messageReads, bots, roles, type User
 import { taskRelations } from "@shared/schema";
 import { taskAssignees, type TaskAssignee } from "@shared/schema";
 import { db } from "../db";
-import { eq, and, desc, exists, sql } from "drizzle-orm";
+import { eq, and, desc, exists, sql, gt } from "drizzle-orm";
 import { formatUserName } from "../utils/formatUserName";
 import { TasksCoreStorage } from "./tasks-core.storage";
 import { fieldConditionsMatch, resolveFieldDisplayText } from "../utils/field-conditions";
@@ -239,7 +239,7 @@ export class TasksStorage extends TasksCoreStorage {
   }
 
   // Task Messages (Chat)
-  async getTaskMessages(taskId: number, organizationId: number): Promise<TaskMessageWithAuthor[]> {
+  async getTaskMessages(taskId: number, organizationId: number, afterId?: number): Promise<TaskMessageWithAuthor[]> {
     const replyToMsg = db.select({
       id: taskMessages.id,
       message: taskMessages.message,
@@ -289,7 +289,8 @@ export class TasksStorage extends TasksCoreStorage {
       .leftJoin(replyToAuthor, eq(replyToMsg.authorId, replyToAuthor.id))
       .where(and(
         eq(taskMessages.taskId, taskId),
-        eq(forms.organizationId, organizationId)
+        eq(forms.organizationId, organizationId),
+        ...(afterId ? [gt(taskMessages.id, afterId)] : [])
       ))
       .orderBy(taskMessages.createdAt);