feat(bot): add group sync upsert

apps/bot/src/whatsapp/group-sync.ts

@@ -0,0 +1,42 @@
+import { sql } from "drizzle-orm";
+import type { WASocket } from "@whiskeysockets/baileys";
+import { whatsappGroups } from "@cmbot/db";
+import { db } from "../db.js";
+import { logger } from "../logger.js";
+
+export async function syncGroupsForAccount(
+  accountId: string,
+  socket: WASocket,
+): Promise<{ synced: number }> {
+  const meta = await socket.groupFetchAllParticipating();
+  const entries = Object.values(meta);
+
+  if (entries.length === 0) {
+    logger.info({ accountId }, "group-sync: no groups");
+    return { synced: 0 };
+  }
+
+  const rows = entries.map((g) => ({
+    accountId,
+    waGroupJid: g.id,
+    name: g.subject ?? "(no subject)",
+    participantCount: g.participants?.length ?? 0,
+    isArchived: false,
+    lastSyncedAt: new Date(),
+  }));
+
+  await db
+    .insert(whatsappGroups)
+    .values(rows)
+    .onConflictDoUpdate({
+      target: [whatsappGroups.accountId, whatsappGroups.waGroupJid],
+      set: {
+        name: sql`excluded.name`,
+        participantCount: sql`excluded.participant_count`,
+        lastSyncedAt: sql`excluded.last_synced_at`,
+      },
+    });
+
+  logger.info({ accountId, count: rows.length }, "group-sync: synced");
+  return { synced: rows.length };
+}