DB-backed workspace + LangGraph agent

Frontend/server/api/telegram/messages.get.ts

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+import { getQuery } from "h3";
+import { prisma } from "../../utils/prisma";
+import { getAuthContext } from "../../utils/auth";
+
+export default defineEventHandler(async (event) => {
+  const auth = await getAuthContext(event);
+  const q = getQuery(event);
+  const threadId = typeof q.threadId === "string" ? q.threadId : "";
+  if (!threadId) throw createError({ statusCode: 400, statusMessage: "threadId is required" });
+
+  const thread = await prisma.omniThread.findFirst({
+    where: { id: threadId, teamId: auth.teamId, channel: "TELEGRAM" },
+  });
+  if (!thread) throw createError({ statusCode: 404, statusMessage: "thread not found" });
+
+  const items = await prisma.omniMessage.findMany({
+    where: { teamId: auth.teamId, threadId: thread.id, channel: "TELEGRAM" },
+    orderBy: { occurredAt: "asc" },
+    take: 200,
+  });
+
+  return {
+    thread: {
+      id: thread.id,
+      contactId: thread.contactId,
+      externalChatId: thread.externalChatId,
+      businessConnectionId: thread.businessConnectionId,
+      title: thread.title,
+      updatedAt: thread.updatedAt,
+    },
+    items: items.map((m) => ({
+      id: m.id,
+      direction: m.direction,
+      status: m.status,
+      text: m.text,
+      providerMessageId: m.providerMessageId,
+      occurredAt: m.occurredAt,
+    })),
+  };
+});
+

Frontend/server/api/telegram/send.post.ts

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+import { readBody } from "h3";
+import { prisma } from "../../utils/prisma";
+import { getAuthContext } from "../../utils/auth";
+import { enqueueTelegramSend } from "../../queues/telegramSend";
+
+export default defineEventHandler(async (event) => {
+  const auth = await getAuthContext(event);
+  const body = await readBody<{ threadId?: string; text?: string }>(event);
+
+  const threadId = (body?.threadId || "").trim();
+  const text = (body?.text || "").trim();
+  if (!threadId) throw createError({ statusCode: 400, statusMessage: "threadId is required" });
+  if (!text) throw createError({ statusCode: 400, statusMessage: "text is required" });
+
+  const thread = await prisma.omniThread.findFirst({
+    where: { id: threadId, teamId: auth.teamId, channel: "TELEGRAM" },
+  });
+  if (!thread) throw createError({ statusCode: 404, statusMessage: "thread not found" });
+
+  const msg = await prisma.omniMessage.create({
+    data: {
+      teamId: auth.teamId,
+      contactId: thread.contactId,
+      threadId: thread.id,
+      direction: "OUT",
+      channel: "TELEGRAM",
+      status: "PENDING",
+      text,
+      occurredAt: new Date(),
+    },
+  });
+
+  await enqueueTelegramSend({ omniMessageId: msg.id });
+  return { ok: true, messageId: msg.id };
+});
+

Frontend/server/api/telegram/threads.get.ts

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+import { prisma } from "../../utils/prisma";
+import { getAuthContext } from "../../utils/auth";
+
+export default defineEventHandler(async (event) => {
+  const auth = await getAuthContext(event);
+
+  const threads = await prisma.omniThread.findMany({
+    where: { teamId: auth.teamId, channel: "TELEGRAM" },
+    orderBy: { updatedAt: "desc" },
+    take: 50,
+    include: {
+      contact: true,
+      messages: { orderBy: { occurredAt: "desc" }, take: 1 },
+    },
+  });
+
+  return {
+    items: threads.map((t) => ({
+      id: t.id,
+      contact: { id: t.contact.id, name: t.contact.name },
+      externalChatId: t.externalChatId,
+      businessConnectionId: t.businessConnectionId,
+      title: t.title,
+      updatedAt: t.updatedAt,
+      lastMessage: t.messages[0]
+        ? {
+            id: t.messages[0].id,
+            direction: t.messages[0].direction,
+            status: t.messages[0].status,
+            text: t.messages[0].text,
+            occurredAt: t.messages[0].occurredAt,
+          }
+        : null,
+    })),
+  };
+});
+

Frontend/server/api/telegram/webhook.post.ts

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+import { readBody, getQuery, getHeader } from "h3";
+import { prisma } from "../../utils/prisma";
+
+function teamIdFromWebhook(event: any) {
+  const q = getQuery(event);
+  const fromQuery = typeof q.teamId === "string" ? q.teamId : null;
+  return fromQuery || process.env.TELEGRAM_DEFAULT_TEAM_ID || "demo-team";
+}
+
+function assertSecret(event: any) {
+  const expected = process.env.TELEGRAM_WEBHOOK_SECRET;
+  if (!expected) return;
+
+  const got = getHeader(event, "x-telegram-bot-api-secret-token");
+  if (!got || got !== expected) {
+    throw createError({ statusCode: 401, statusMessage: "invalid telegram secret token" });
+  }
+}
+
+function displayNameFromTelegram(obj: any) {
+  const first = obj?.first_name || "";
+  const last = obj?.last_name || "";
+  const u = obj?.username ? `@${obj.username}` : "";
+  const full = `${first} ${last}`.trim();
+  return (full || u || "Telegram user").trim();
+}
+
+async function upsertBusinessConnection(teamId: string, bc: any) {
+  if (!bc?.id) return;
+  const businessConnectionId = String(bc.id);
+
+  await prisma.telegramBusinessConnection.upsert({
+    where: { teamId_businessConnectionId: { teamId, businessConnectionId } },
+    update: {
+      isEnabled: typeof bc.is_enabled === "boolean" ? bc.is_enabled : undefined,
+      canReply: typeof bc.can_reply === "boolean" ? bc.can_reply : undefined,
+      rawJson: bc,
+    },
+    create: {
+      teamId,
+      businessConnectionId,
+      isEnabled: typeof bc.is_enabled === "boolean" ? bc.is_enabled : null,
+      canReply: typeof bc.can_reply === "boolean" ? bc.can_reply : null,
+      rawJson: bc,
+    },
+  });
+}
+
+async function ensureContactForTelegramChat(teamId: string, externalChatId: string, tgUser: any) {
+  const existing = await prisma.omniContactIdentity.findUnique({
+    where: { teamId_channel_externalId: { teamId, channel: "TELEGRAM", externalId: externalChatId } },
+    include: { contact: true },
+  });
+  if (existing) return existing.contact;
+
+  const contact = await prisma.contact.create({
+    data: {
+      teamId,
+      name: displayNameFromTelegram(tgUser),
+    },
+  });
+
+  await prisma.omniContactIdentity.create({
+    data: {
+      teamId,
+      contactId: contact.id,
+      channel: "TELEGRAM",
+      externalId: externalChatId,
+    },
+  });
+
+  return contact;
+}
+
+async function ensureThread(input: {
+  teamId: string;
+  contactId: string;
+  externalChatId: string;
+  businessConnectionId?: string | null;
+  title?: string | null;
+}) {
+  return prisma.omniThread.upsert({
+    where: {
+      teamId_channel_externalChatId_businessConnectionId: {
+        teamId: input.teamId,
+        channel: "TELEGRAM",
+        externalChatId: input.externalChatId,
+        businessConnectionId: input.businessConnectionId ?? null,
+      },
+    },
+    update: {
+      contactId: input.contactId,
+      title: input.title ?? undefined,
+    },
+    create: {
+      teamId: input.teamId,
+      contactId: input.contactId,
+      channel: "TELEGRAM",
+      externalChatId: input.externalChatId,
+      businessConnectionId: input.businessConnectionId ?? null,
+      title: input.title ?? null,
+    },
+  });
+}
+
+export default defineEventHandler(async (event) => {
+  assertSecret(event);
+  const teamId = teamIdFromWebhook(event);
+
+  const update = (await readBody<any>(event)) || {};
+
+  // business_connection updates (user connected/disconnected bot)
+  if (update.business_connection) {
+    await upsertBusinessConnection(teamId, update.business_connection);
+    return { ok: true };
+  }
+
+  const msg = update.business_message || update.edited_business_message;
+  if (!msg) return { ok: true };
+
+  const businessConnectionId = msg.business_connection_id ? String(msg.business_connection_id) : null;
+  const chatId = msg.chat?.id != null ? String(msg.chat.id) : null;
+  const providerMessageId = msg.message_id != null ? String(msg.message_id) : null;
+
+  if (!chatId || !providerMessageId) return { ok: true };
+
+  const text = typeof msg.text === "string" ? msg.text : typeof msg.caption === "string" ? msg.caption : "";
+  const occurredAt = msg.date ? new Date(Number(msg.date) * 1000) : new Date();
+
+  const contact = await ensureContactForTelegramChat(teamId, chatId, msg.from || msg.chat);
+  const thread = await ensureThread({
+    teamId,
+    contactId: contact.id,
+    externalChatId: chatId,
+    businessConnectionId,
+    title: msg.chat?.title ? String(msg.chat.title) : null,
+  });
+
+  // Dedupe on (threadId, providerMessageId). If duplicate, ignore.
+  try {
+    await prisma.omniMessage.create({
+      data: {
+        teamId,
+        contactId: contact.id,
+        threadId: thread.id,
+        direction: "IN",
+        channel: "TELEGRAM",
+        status: "DELIVERED",
+        text: text || "",
+        providerMessageId,
+        providerUpdateId: update.update_id != null ? String(update.update_id) : null,
+        rawJson: update,
+        occurredAt,
+      },
+    });
+  } catch (e: any) {
+    // Prisma unique constraint violation => duplicate delivery
+    if (e?.code !== "P2002") throw e;
+  }
+
+  return { ok: true };
+});
+