# Multi-Account Architecture, Adapter Boundary & Approval Workflow Implementation Plan

> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.

**Goal:** Seal the WhatsApp adapter so Baileys types never leak outside `src/whatsapp/`; add multi-account bot support via a session pool loaded from the DB; implement the ⭐ star reaction approval workflow with a rate-limited cross-group forward queue.

**Architecture:** `NormalizedMessage` and `NormalizedReaction` move to `@tower/types` (platform-neutral). `session.ts` normalizes raw Baileys events internally before calling any callback — `main.ts` never imports from `@whiskeysockets/baileys`. `WhatsAppSessionPool` manages N sessions indexed by `accountId`, loaded from the `accounts` DB table on startup. A ⭐ reaction from an admin JID triggers `handleStarReaction` → writes `Approval` record → enqueues `ForwardJobData` jobs into a rate-limited BullMQ queue (20 forwards/min) to avoid WhatsApp bans.

**Tech Stack:** BullMQ 5, Prisma 6, Baileys 7.0.0-rc13, TypeScript 5, Jest 29, pnpm workspaces

---

## File Map

**Modify:**
- `packages/types/src/message.ts` — add `NormalizedMessage`, `NormalizedReaction`, `ForwardJobData`; add `accountId` to `IngestJobData`
- `apps/api/prisma/schema.prisma` — add `Account` model, `AccountStatus` enum; add optional `accountId` to `Group`
- `apps/worker/src/whatsapp/normalizer.ts` — import `NormalizedMessage`/`NormalizedReaction` from `@tower/types`; accept `accountId` param; add `normalizeReaction`
- `apps/worker/src/whatsapp/normalizer.test.ts` — add reaction tests
- `apps/worker/src/whatsapp/group-sync.ts` — accept `accountId` param, set on group upsert
- `apps/worker/src/whatsapp/session.ts` — normalize + react inside handler; change callback types; accept `accountId` as first param
- `apps/worker/src/main.ts` — use pool, load accounts from DB, wire reactions through approval

**Create:**
- `apps/worker/src/whatsapp/session-pool.ts` — `WhatsAppSessionPool` class
- `apps/worker/src/core/approval.ts` — `handleStarReaction`
- `apps/worker/src/core/approval.test.ts`
- `apps/worker/src/queues/forward.queue.ts`
- `apps/worker/src/queues/forward.processor.ts`
- `apps/worker/src/queues/forward.processor.test.ts`

---

### Task 1: Extend @tower/types

**Files:**
- Modify: `packages/types/src/message.ts`

Add `NormalizedMessage`, `NormalizedReaction`, `ForwardJobData` as platform-neutral shared types. Add `accountId` to `IngestJobData`. These types must contain zero Baileys imports.

- [ ] **Step 1: Replace `packages/types/src/message.ts` entirely**

```typescript
export type Platform = 'whatsapp' | 'telegram' | 'discord';

export type MessageStatus =
  | 'PENDING'
  | 'APPROVED'
  | 'REJECTED'
  | 'DISTRIBUTED'
  | 'ARCHIVED';

export type ApprovalDecision = 'APPROVED' | 'REJECTED';

// Platform-neutral normalized message — zero Baileys/Telegram types here
export interface NormalizedMessage {
  platformMsgId: string;
  sourceGroupJid: string;
  senderJid: string;
  senderName?: string;
  content: string;
  accountId: string;  // which bot account received this message
}

// Platform-neutral normalized reaction (e.g. WhatsApp emoji reaction)
export interface NormalizedReaction {
  reactorJid: string;
  targetMsgId: string;    // platformMsgId of the message being reacted to
  sourceGroupJid: string;
  emoji: string;
  accountId: string;      // which bot account received this reaction
}

export interface CanonicalMessage {
  messageId: string;
  platform: Platform;
  platformMsgId: string;
  sourceGroupId: string;
  senderJid: string;
  senderName?: string;
  content: string;
  mediaUrl?: string;
  tags: string[];
  status: MessageStatus;
  createdAt: Date;
}

export interface Group {
  id: string;
  platform: Platform;
  platformId: string;
  name: string;
  description?: string;
  isActive: boolean;
}

export interface SyncRoute {
  id: string;
  sourceGroupId: string;
  targetGroupId: string;
  isActive: boolean;
}

export interface IngestJobData {
  platformMsgId: string;
  platform: Platform;
  accountId: string;          // which bot account received this message
  sourceGroupId: string;
  senderJid: string;
  senderName?: string;
  content: string;
  tags: string[];
}

export interface ForwardJobData {
  messageId: string;          // DB id of the approved Message record
  content: string;
  sourceGroupName: string;
  senderName?: string;
  toGroupJid: string;
  fromAccountId: string;      // which bot account to send the forward from
}
```

- [ ] **Step 2: Confirm types package compiles with zero errors**

```bash
cd /path/to/repo && pnpm --filter @tower/types build
```

Expected: exits 0, no TypeScript errors.

- [ ] **Step 3: Commit**

```bash
git add packages/types/src/message.ts
git commit -m "feat(types): NormalizedMessage, NormalizedReaction, ForwardJobData; accountId on IngestJobData"
```

---

### Task 2: Seal the WhatsApp adapter boundary

**Files:**
- Modify: `apps/worker/src/whatsapp/normalizer.ts`
- Modify: `apps/worker/src/whatsapp/normalizer.test.ts`
- Modify: `apps/worker/src/whatsapp/session.ts`

After this task: `main.ts` will never import anything from `@whiskeysockets/baileys`. All Baileys types stay inside `src/whatsapp/`.

- [ ] **Step 1: Replace `apps/worker/src/whatsapp/normalizer.ts`**

```typescript
import { proto } from '@whiskeysockets/baileys';
import { NormalizedMessage, NormalizedReaction } from '@tower/types';

function extractText(msg: proto.IWebMessageInfo): string {
  const m = msg.message;
  if (!m) return '';
  return (
    m.conversation ||
    m.extendedTextMessage?.text ||
    m.imageMessage?.caption ||
    m.videoMessage?.caption ||
    m.documentMessage?.caption ||
    ''
  );
}

export function normalizeMessage(
  msg: proto.IWebMessageInfo,
  accountId: string,
): NormalizedMessage | null {
  const key = msg.key;
  if (!key) return null;

  const remoteJid = key.remoteJid ?? '';
  if (!remoteJid.endsWith('@g.us')) return null;
  if (key.fromMe) return null;
  if (!msg.message) return null;

  const platformMsgId = key.id;
  if (!platformMsgId) return null;

  const content = extractText(msg);

  return {
    platformMsgId,
    sourceGroupJid: remoteJid,
    senderJid: key.participant ?? '',
    senderName: msg.pushName ?? undefined,
    content,
    accountId,
  };
}

export function normalizeReaction(
  msg: proto.IWebMessageInfo,
  accountId: string,
): NormalizedReaction | null {
  const key = msg.key;
  if (!key) return null;

  const remoteJid = key.remoteJid ?? '';
  if (!remoteJid.endsWith('@g.us')) return null;
  if (key.fromMe) return null;

  const reaction = msg.message?.reactionMessage;
  if (!reaction) return null;

  const targetMsgId = reaction.key?.id;
  if (!targetMsgId) return null;

  return {
    reactorJid: key.participant ?? '',
    targetMsgId,
    sourceGroupJid: remoteJid,
    emoji: reaction.text ?? '',
    accountId,
  };
}
```

- [ ] **Step 2: Write failing tests for normalizeReaction**

Append to `apps/worker/src/whatsapp/normalizer.test.ts` (keep all existing tests, add below):

```typescript
import { normalizeReaction } from './normalizer';

describe('normalizeReaction', () => {
  it('normalizes a star reaction from a group participant', () => {
    const msg = {
      key: {
        remoteJid: '120363043312345678@g.us',
        fromMe: false,
        id: 'REACTION_ID',
        participant: '919876543210@s.whatsapp.net',
      },
      message: {
        reactionMessage: {
          key: { remoteJid: '120363043312345678@g.us', id: 'TARGET_MSG_ID' },
          text: '⭐',
        },
      },
    } as proto.IWebMessageInfo;

    const result = normalizeReaction(msg, 'acc_1');
    expect(result).toMatchObject({
      reactorJid: '919876543210@s.whatsapp.net',
      targetMsgId: 'TARGET_MSG_ID',
      sourceGroupJid: '120363043312345678@g.us',
      emoji: '⭐',
      accountId: 'acc_1',
    });
  });

  it('returns null when reactionMessage is missing (regular message)', () => {
    const msg = {
      key: { remoteJid: '120363043312345678@g.us', fromMe: false, id: 'ID' },
      message: { conversation: 'hello' },
    } as proto.IWebMessageInfo;
    expect(normalizeReaction(msg, 'acc_1')).toBeNull();
  });

  it('returns null for own reactions (fromMe=true)', () => {
    const msg = {
      key: { remoteJid: '120363043312345678@g.us', fromMe: true, id: 'ID' },
      message: { reactionMessage: { key: { id: 'TARGET' }, text: '⭐' } },
    } as proto.IWebMessageInfo;
    expect(normalizeReaction(msg, 'acc_1')).toBeNull();
  });

  it('returns null for DM reactions (non-group jid)', () => {
    const msg = {
      key: { remoteJid: '919876543210@s.whatsapp.net', fromMe: false, id: 'ID' },
      message: { reactionMessage: { key: { id: 'TARGET' }, text: '⭐' } },
    } as proto.IWebMessageInfo;
    expect(normalizeReaction(msg, 'acc_1')).toBeNull();
  });

  it('returns null when targetMsgId is missing', () => {
    const msg = {
      key: {
        remoteJid: '120363043312345678@g.us',
        fromMe: false,
        id: 'ID',
        participant: '91@s.whatsapp.net',
      },
      message: { reactionMessage: { key: {}, text: '⭐' } },
    } as proto.IWebMessageInfo;
    expect(normalizeReaction(msg, 'acc_1')).toBeNull();
  });
});
```

Also update the `normalizeMessage` tests: the function signature changed to accept `accountId` as second param. Update every `normalizeMessage(makeMsg(...))` call to `normalizeMessage(makeMsg(...), 'acc_1')` and add `accountId: 'acc_1'` to the expected `toMatchObject` where relevant.

- [ ] **Step 3: Run normalizer tests to confirm they pass**

```bash
pnpm --filter @tower/worker test -- --testPathPattern=normalizer
```

Expected: all existing tests + 5 new reaction tests pass.

- [ ] **Step 4: Replace `apps/worker/src/whatsapp/session.ts`**

```typescript
import makeWASocket, {
  useMultiFileAuthState,
  fetchLatestBaileysVersion,
  DisconnectReason,
  WASocket,
  GroupMetadata,
} from '@whiskeysockets/baileys';
import { Boom } from '@hapi/boom';
import qrcode from 'qrcode-terminal';
import { NormalizedMessage, NormalizedReaction } from '@tower/types';
import { normalizeMessage, normalizeReaction } from './normalizer';
import { createLogger } from '@tower/logger';

const logger = createLogger('whatsapp-session');

export type OnMessageCallback = (msg: NormalizedMessage) => Promise<void> | void;
export type OnReactionCallback = (reaction: NormalizedReaction) => Promise<void> | void;
export type OnGroupsCallback = (groups: Record<string, GroupMetadata>) => Promise<void> | void;

export async function createWhatsAppSession(
  accountId: string,
  sessionPath: string,
  onMessage: OnMessageCallback,
  onReaction: OnReactionCallback,
  onGroups: OnGroupsCallback,
): Promise<WASocket> {
  const { state, saveCreds } = await useMultiFileAuthState(sessionPath);
  const { version } = await fetchLatestBaileysVersion();

  const sock = makeWASocket({
    version,
    auth: state,
    printQRInTerminal: false,
    logger: logger as any,
  });

  sock.ev.on('creds.update', saveCreds);

  sock.ev.on('connection.update', async ({ connection, qr, lastDisconnect }) => {
    if (qr) {
      qrcode.generate(qr, { small: true });
    }
    if (connection === 'close') {
      const reason = (lastDisconnect?.error as Boom)?.output?.statusCode;
      const shouldReconnect = reason !== DisconnectReason.loggedOut;
      logger.info({ reason, shouldReconnect }, 'Connection closed');
      if (shouldReconnect) {
        logger.info('Reconnecting in 5s...');
        setTimeout(
          () => createWhatsAppSession(accountId, sessionPath, onMessage, onReaction, onGroups),
          5000,
        );
      }
    } else if (connection === 'open') {
      try {
        logger.info({ accountId }, 'WhatsApp connected');
        const groups = await sock.groupFetchAllParticipating();
        await Promise.resolve(onGroups(groups)).catch((err) =>
          logger.error({ err }, 'Group sync error'),
        );
      } catch (err) {
        logger.error({ err }, 'Failed to fetch groups on connect');
      }
    }
  });

  sock.ev.on('messages.upsert', ({ messages, type }) => {
    if (type !== 'notify') return;
    for (const msg of messages) {
      if (msg.message?.reactionMessage) {
        const reaction = normalizeReaction(msg, accountId);
        if (reaction) {
          void Promise.resolve(onReaction(reaction)).catch((err) =>
            logger.error({ err }, 'Error processing reaction'),
          );
        }
        continue;
      }
      const normalized = normalizeMessage(msg, accountId);
      if (!normalized) continue;
      void Promise.resolve(onMessage(normalized)).catch((err) =>
        logger.error({ err }, 'Error processing message'),
      );
    }
  });

  return sock;
}
```

- [ ] **Step 5: Commit**

```bash
git add apps/worker/src/whatsapp/normalizer.ts \
        apps/worker/src/whatsapp/normalizer.test.ts \
        apps/worker/src/whatsapp/session.ts
git commit -m "feat(worker): seal WhatsApp adapter — normalize inside session, reactions handled internally"
```

---

### Task 3: Prisma — Account model and Group.accountId

**Files:**
- Modify: `apps/api/prisma/schema.prisma`

- [ ] **Step 1: Add `AccountStatus` enum and `Account` model to the schema**

Open `apps/api/prisma/schema.prisma`. Append after the `ConsentRecord` model block:

```prisma
enum AccountStatus {
  ACTIVE
  DISCONNECTED
  BANNED
}

model Account {
  id          String        @id @default(cuid())
  platform    String
  jid         String
  sessionPath String
  displayName String?
  status      AccountStatus @default(ACTIVE)
  groups      Group[]
  createdAt   DateTime      @default(now())
  updatedAt   DateTime      @updatedAt

  @@unique([platform, jid])
}
```

- [ ] **Step 2: Add optional `accountId` to the `Group` model**

The full updated `Group` model (replace the existing one):

```prisma
model Group {
  id          String   @id @default(cuid())
  platform    String
  platformId  String
  name        String
  description String?
  isActive    Boolean  @default(true)
  accountId   String?
  account     Account? @relation(fields: [accountId], references: [id])
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  messages       Message[]
  syncRoutesFrom SyncRoute[]     @relation("sourceGroup")
  syncRoutesTo   SyncRoute[]     @relation("targetGroup")
  consentRecords ConsentRecord[]

  @@unique([platform, platformId])
}
```

- [ ] **Step 3: Run migration**

```bash
cd apps/api && DATABASE_URL="postgresql://tower:tower@localhost:5433/tower" \
  npx prisma migrate dev --name add-account-model
```

Expected: "Your database is now in sync with your schema."

- [ ] **Step 4: Regenerate Prisma client in worker**

```bash
pnpm --filter @tower/worker generate
```

Expected: "Generated Prisma Client..."

- [ ] **Step 5: Seed the first Account record**

Find your WhatsApp session's JID. It is stored in `sessions/creds.json` (the file at the path you set as `WHATSAPP_SESSION_PATH` in `.env`). Open it and look for `"me": { "id": "..." }` — that string is your JID.

Insert the account record (replace `YOUR_JID` and `YOUR_SESSION_PATH`):

```bash
psql "postgresql://tower:tower@localhost:5433/tower" <<'SQL'
INSERT INTO "Account" (id, platform, jid, "sessionPath", "displayName", status, "createdAt", "updatedAt")
VALUES (
  'acc_' || substring(gen_random_uuid()::text, 1, 8),
  'whatsapp',
  'YOUR_JID',
  'YOUR_SESSION_PATH',
  'Bot 1',
  'ACTIVE',
  now(),
  now()
)
ON CONFLICT DO NOTHING;
SQL
```

Verify it was inserted:

```bash
psql "postgresql://tower:tower@localhost:5433/tower" -c 'SELECT id, jid, "sessionPath", status FROM "Account";'
```

Expected: one row with your JID and `ACTIVE` status.

- [ ] **Step 6: Commit**

```bash
git add apps/api/prisma/schema.prisma apps/api/prisma/migrations/
git commit -m "feat(schema): Account model with AccountStatus enum, optional Group.accountId"
```

---

### Task 4: WhatsAppSessionPool and updated group-sync

**Files:**
- Modify: `apps/worker/src/whatsapp/group-sync.ts`
- Create: `apps/worker/src/whatsapp/session-pool.ts`

- [ ] **Step 1: Update `group-sync.ts` to accept `accountId`**

Replace `apps/worker/src/whatsapp/group-sync.ts`:

```typescript
import { GroupMetadata } from '@whiskeysockets/baileys';
import { createLogger } from '@tower/logger';

const logger = createLogger('group-sync');

export async function syncGroups(
  groups: Record<string, GroupMetadata>,
  accountId: string,
  prisma: any,
): Promise<Map<string, string>> {
  const jidToDbId = new Map<string, string>();

  for (const [jid, meta] of Object.entries(groups)) {
    const group = await prisma.group.upsert({
      where: { platform_platformId: { platform: 'whatsapp', platformId: jid } },
      create: {
        platform: 'whatsapp',
        platformId: jid,
        name: meta.subject,
        description: meta.desc ?? undefined,
        isActive: true,
        accountId,
      },
      update: {
        name: meta.subject,
        description: meta.desc ?? undefined,
        accountId,
      },
    });
    jidToDbId.set(jid, group.id);
  }

  logger.info({ count: jidToDbId.size, accountId }, 'Groups synced');
  return jidToDbId;
}
```

- [ ] **Step 2: Create `apps/worker/src/whatsapp/session-pool.ts`**

```typescript
import { WASocket } from '@whiskeysockets/baileys';
import { NormalizedMessage, NormalizedReaction } from '@tower/types';
import { createWhatsAppSession } from './session';
import { createLogger } from '@tower/logger';

const logger = createLogger('session-pool');

// Callbacks the pool exposes to main.ts — accountId injected by the pool
export type PoolMessageCallback = (msg: NormalizedMessage, accountId: string) => Promise<void> | void;
export type PoolReactionCallback = (reaction: NormalizedReaction, accountId: string) => Promise<void> | void;
// groups typed as `any` — GroupMetadata (Baileys type) stays inside whatsapp/ folder
export type PoolGroupsCallback = (groups: any, accountId: string) => Promise<void> | void;

export class WhatsAppSessionPool {
  private sessions = new Map<string, WASocket>();

  async add(
    accountId: string,
    sessionPath: string,
    onMessage: PoolMessageCallback,
    onReaction: PoolReactionCallback,
    onGroups: PoolGroupsCallback,
  ): Promise<void> {
    logger.info({ accountId }, 'Starting session');
    const sock = await createWhatsAppSession(
      accountId,
      sessionPath,
      (msg) => onMessage(msg, accountId),
      (reaction) => onReaction(reaction, accountId),
      (groups) => onGroups(groups, accountId),
    );
    this.sessions.set(accountId, sock);
  }

  get(accountId: string): WASocket | undefined {
    return this.sessions.get(accountId);
  }

  getAll(): Map<string, WASocket> {
    return this.sessions;
  }

  async sendMessage(accountId: string, groupJid: string, text: string): Promise<void> {
    const sock = this.sessions.get(accountId);
    if (!sock) throw new Error(`No active session for account ${accountId}`);
    await sock.sendMessage(groupJid, { text });
  }

  async remove(accountId: string): Promise<void> {
    const sock = this.sessions.get(accountId);
    if (sock) {
      await sock.logout().catch(() => {});
      this.sessions.delete(accountId);
      logger.info({ accountId }, 'Session removed');
    }
  }
}
```

- [ ] **Step 3: Confirm worker compiles (ignoring main.ts errors for now)**

```bash
pnpm --filter @tower/worker build 2>&1 | grep -v "main.ts"
```

Expected: no errors outside `main.ts` (it still uses old signatures — fixed in Task 7).

- [ ] **Step 4: Commit**

```bash
git add apps/worker/src/whatsapp/session-pool.ts apps/worker/src/whatsapp/group-sync.ts
git commit -m "feat(worker): WhatsAppSessionPool + group-sync accepts accountId"
```

---

### Task 5: Approval core logic

**Files:**
- Create: `apps/worker/src/core/approval.test.ts`
- Create: `apps/worker/src/core/approval.ts`

**Context:** When an admin reacts with ⭐ to a group message, `handleStarReaction` finds the message in DB, marks it `APPROVED`, creates an `Approval` record, then returns `ForwardJobData[]` — one entry per active `SyncRoute` from the message's source group. The caller (main.ts) enqueues those as forward jobs.

The Prisma relation graph: `Message.sourceGroup → Group.syncRoutesFrom → SyncRoute.targetGroup → Group`. The query must include `sourceGroup.syncRoutesFrom.targetGroup` — NOT a top-level `syncRoutesFrom` on Message (that relation doesn't exist on Message).

- [ ] **Step 1: Write the failing tests**

Create `apps/worker/src/core/approval.test.ts`:

```typescript
import { handleStarReaction } from './approval';
import { NormalizedReaction } from '@tower/types';

function makeReaction(overrides: Partial<NormalizedReaction> = {}): NormalizedReaction {
  return {
    reactorJid: '919876543210@s.whatsapp.net',
    targetMsgId: 'TARGET_MSG_123',
    sourceGroupJid: '120363043312345678@g.us',
    emoji: '⭐',
    accountId: 'acc_1',
    ...overrides,
  };
}

const adminJids = ['919876543210@s.whatsapp.net'];

describe('handleStarReaction', () => {
  it('returns null for non-star emoji', async () => {
    const result = await handleStarReaction(makeReaction({ emoji: '👍' }), adminJids, {} as any);
    expect(result).toBeNull();
  });

  it('returns null when reactor is not an admin', async () => {
    const result = await handleStarReaction(
      makeReaction({ reactorJid: 'stranger@s.whatsapp.net' }),
      adminJids,
      {} as any,
    );
    expect(result).toBeNull();
  });

  it('returns null when message not found', async () => {
    const prisma = { message: { findUnique: jest.fn().mockResolvedValue(null) } } as any;
    const result = await handleStarReaction(makeReaction(), adminJids, prisma);
    expect(result).toBeNull();
    expect(prisma.message.findUnique).toHaveBeenCalledWith({
      where: {
        platform_platformMsgId: { platform: 'whatsapp', platformMsgId: 'TARGET_MSG_123' },
      },
      include: {
        approval: true,
        sourceGroup: {
          include: {
            syncRoutesFrom: { where: { isActive: true }, include: { targetGroup: true } },
          },
        },
      },
    });
  });

  it('returns null when message status is not PENDING', async () => {
    const prisma = {
      message: {
        findUnique: jest.fn().mockResolvedValue({
          id: 'msg_1',
          status: 'REJECTED',
          approval: null,
          sourceGroup: { name: 'Test Group', syncRoutesFrom: [] },
        }),
      },
    } as any;
    expect(await handleStarReaction(makeReaction(), adminJids, prisma)).toBeNull();
  });

  it('returns null when message is already approved (approval record exists)', async () => {
    const prisma = {
      message: {
        findUnique: jest.fn().mockResolvedValue({
          id: 'msg_1',
          status: 'APPROVED',
          approval: { id: 'appr_1' },
          sourceGroup: { name: 'Test Group', syncRoutesFrom: [] },
        }),
      },
    } as any;
    expect(await handleStarReaction(makeReaction(), adminJids, prisma)).toBeNull();
  });

  it('approves message and returns empty array when no sync routes', async () => {
    const prisma = {
      message: {
        findUnique: jest.fn().mockResolvedValue({
          id: 'msg_1',
          status: 'PENDING',
          approval: null,
          content: 'hello',
          senderName: 'Alice',
          sourceGroup: { name: 'UP Parivar Dallas', syncRoutesFrom: [] },
        }),
        update: jest.fn().mockResolvedValue({}),
      },
      approval: { create: jest.fn().mockResolvedValue({}) },
    } as any;

    const result = await handleStarReaction(makeReaction(), adminJids, prisma);
    expect(result).toEqual([]);
    expect(prisma.message.update).toHaveBeenCalledWith({
      where: { id: 'msg_1' },
      data: { status: 'APPROVED' },
    });
    expect(prisma.approval.create).toHaveBeenCalledWith({
      data: {
        messageId: 'msg_1',
        adminId: '919876543210@s.whatsapp.net',
        decision: 'APPROVED',
      },
    });
  });

  it('returns ForwardJobData for each active sync route', async () => {
    const prisma = {
      message: {
        findUnique: jest.fn().mockResolvedValue({
          id: 'msg_1',
          status: 'PENDING',
          approval: null,
          content: 'important announcement',
          senderName: 'Bob',
          sourceGroup: {
            name: 'Source Group',
            syncRoutesFrom: [
              { targetGroup: { platformId: '999@g.us', accountId: 'acc_2' } },
              { targetGroup: { platformId: '888@g.us', accountId: null } },
            ],
          },
        }),
        update: jest.fn().mockResolvedValue({}),
      },
      approval: { create: jest.fn().mockResolvedValue({}) },
    } as any;

    const result = await handleStarReaction(makeReaction(), adminJids, prisma);
    expect(result).toHaveLength(2);
    expect(result![0]).toMatchObject({
      messageId: 'msg_1',
      content: 'important announcement',
      sourceGroupName: 'Source Group',
      senderName: 'Bob',
      toGroupJid: '999@g.us',
      fromAccountId: 'acc_2',
    });
    // falls back to reaction.accountId when targetGroup.accountId is null
    expect(result![1]).toMatchObject({
      toGroupJid: '888@g.us',
      fromAccountId: 'acc_1',
    });
  });
});
```

- [ ] **Step 2: Run tests to confirm they fail**

```bash
pnpm --filter @tower/worker test -- --testPathPattern=approval
```

Expected: FAIL — "Cannot find module './approval'"

- [ ] **Step 3: Create `apps/worker/src/core/approval.ts`**

```typescript
import { NormalizedReaction, ForwardJobData } from '@tower/types';

export async function handleStarReaction(
  reaction: NormalizedReaction,
  adminJids: string[],
  prisma: any,
): Promise<ForwardJobData[] | null> {
  if (reaction.emoji !== '⭐') return null;
  if (!adminJids.includes(reaction.reactorJid)) return null;

  const message = await prisma.message.findUnique({
    where: {
      platform_platformMsgId: {
        platform: 'whatsapp',
        platformMsgId: reaction.targetMsgId,
      },
    },
    include: {
      approval: true,
      sourceGroup: {
        include: {
          syncRoutesFrom: { where: { isActive: true }, include: { targetGroup: true } },
        },
      },
    },
  });

  if (!message) return null;
  if (message.status !== 'PENDING') return null;
  if (message.approval) return null;

  await prisma.message.update({
    where: { id: message.id },
    data: { status: 'APPROVED' },
  });

  await prisma.approval.create({
    data: {
      messageId: message.id,
      adminId: reaction.reactorJid,
      decision: 'APPROVED',
    },
  });

  const jobs: ForwardJobData[] = message.sourceGroup.syncRoutesFrom.map((route: any) => ({
    messageId: message.id,
    content: message.content,
    sourceGroupName: message.sourceGroup.name,
    senderName: message.senderName ?? undefined,
    toGroupJid: route.targetGroup.platformId,
    fromAccountId: route.targetGroup.accountId ?? reaction.accountId,
  }));

  return jobs;
}
```

- [ ] **Step 4: Run tests to confirm they pass**

```bash
pnpm --filter @tower/worker test -- --testPathPattern=approval
```

Expected: 7 tests pass.

- [ ] **Step 5: Commit**

```bash
git add apps/worker/src/core/approval.ts apps/worker/src/core/approval.test.ts
git commit -m "feat(worker): handleStarReaction approval core with tests"
```

---

### Task 6: Forward queue and processor

**Files:**
- Create: `apps/worker/src/queues/forward.processor.test.ts`
- Create: `apps/worker/src/queues/forward.processor.ts`
- Create: `apps/worker/src/queues/forward.queue.ts`

The rate limiter (20 forwards/min) goes on the **Worker**, not the Queue — this is the BullMQ v5 pattern.

- [ ] **Step 1: Write the failing processor test**

Create `apps/worker/src/queues/forward.processor.test.ts`:

```typescript
import { processForwardJob } from './forward.processor';
import { ForwardJobData } from '@tower/types';

const mockPool = { sendMessage: jest.fn().mockResolvedValue(undefined) };

const baseJob: ForwardJobData = {
  messageId: 'msg_1',
  content: 'Event this Saturday at the temple',
  sourceGroupName: 'UP Parivar Dallas',
  senderName: 'Rajesh',
  toGroupJid: '120363099999@g.us',
  fromAccountId: 'acc_1',
};

describe('processForwardJob', () => {
  beforeEach(() => jest.clearAllMocks());

  it('sends a formatted message via the pool', async () => {
    await processForwardJob(baseJob, mockPool as any);
    expect(mockPool.sendMessage).toHaveBeenCalledWith(
      'acc_1',
      '120363099999@g.us',
      expect.stringContaining('Event this Saturday at the temple'),
    );
  });

  it('includes source group name in the forwarded text', async () => {
    await processForwardJob(baseJob, mockPool as any);
    const [, , text] = mockPool.sendMessage.mock.calls[0];
    expect(text).toContain('UP Parivar Dallas');
  });

  it('includes sender name in the forwarded text', async () => {
    await processForwardJob(baseJob, mockPool as any);
    const [, , text] = mockPool.sendMessage.mock.calls[0];
    expect(text).toContain('Rajesh');
  });

  it('handles missing senderName without throwing', async () => {
    await processForwardJob({ ...baseJob, senderName: undefined }, mockPool as any);
    expect(mockPool.sendMessage).toHaveBeenCalledTimes(1);
  });

  it('throws when pool has no session for the account', async () => {
    const brokenPool = {
      sendMessage: jest.fn().mockRejectedValue(new Error('No active session for account acc_99')),
    };
    await expect(
      processForwardJob({ ...baseJob, fromAccountId: 'acc_99' }, brokenPool as any),
    ).rejects.toThrow('No active session');
  });
});
```

- [ ] **Step 2: Run test to confirm it fails**

```bash
pnpm --filter @tower/worker test -- --testPathPattern=forward.processor
```

Expected: FAIL — "Cannot find module './forward.processor'"

- [ ] **Step 3: Create `apps/worker/src/queues/forward.processor.ts`**

```typescript
import { Worker } from 'bullmq';
import { ForwardJobData } from '@tower/types';
import { parseRedisUrl } from './redis-connection';
import { WhatsAppSessionPool } from '../whatsapp/session-pool';

function formatForwardText(job: ForwardJobData): string {
  const sender = job.senderName ? `_${job.senderName}_` : '_Unknown_';
  return `📢 *${job.sourceGroupName}*\n${sender}:\n\n${job.content}\n\n_— Forwarded by TOWER_`;
}

export async function processForwardJob(
  job: ForwardJobData,
  pool: WhatsAppSessionPool,
): Promise<void> {
  await pool.sendMessage(job.fromAccountId, job.toGroupJid, formatForwardText(job));
}

export function createForwardWorker(
  redisUrl: string,
  pool: WhatsAppSessionPool,
): Worker<ForwardJobData> {
  return new Worker<ForwardJobData>(
    'tower-forward',
    async (job) => processForwardJob(job.data, pool),
    {
      connection: parseRedisUrl(redisUrl),
      limiter: { max: 20, duration: 60_000 }, // 20 forwards per minute — avoids WhatsApp bans
    },
  );
}
```

- [ ] **Step 4: Create `apps/worker/src/queues/forward.queue.ts`**

```typescript
import { Queue } from 'bullmq';
import { ForwardJobData } from '@tower/types';
import { parseRedisUrl } from './redis-connection';

export function createForwardQueue(redisUrl: string): Queue<ForwardJobData> {
  return new Queue<ForwardJobData>('tower-forward', {
    connection: parseRedisUrl(redisUrl),
  });
}
```

- [ ] **Step 5: Run processor tests to confirm they pass**

```bash
pnpm --filter @tower/worker test -- --testPathPattern=forward.processor
```

Expected: 5 tests pass.

- [ ] **Step 6: Commit**

```bash
git add apps/worker/src/queues/forward.queue.ts \
        apps/worker/src/queues/forward.processor.ts \
        apps/worker/src/queues/forward.processor.test.ts
git commit -m "feat(worker): forward queue + processor with 20/min rate limiter"
```

---

### Task 7: Wire main.ts — multi-account pool, reactions, full pipeline

**Files:**
- Modify: `apps/worker/src/main.ts`

This is the final assembly. `main.ts` no longer imports anything from `@whiskeysockets/baileys`. It loads accounts from the DB, creates the pool, and wires: ingest message → tag detect → ingest queue; reaction → approval → forward queue.

- [ ] **Step 1: Replace `apps/worker/src/main.ts` entirely**

```typescript
import { PrismaClient } from '@prisma/client';
import { createLogger } from '@tower/logger';
import { validateEnv } from '@tower/config';
import { createIngestQueue } from './queues/ingest.queue';
import { createIngestWorker } from './queues/ingest.processor';
import { createForwardQueue } from './queues/forward.queue';
import { createForwardWorker } from './queues/forward.processor';
import { WhatsAppSessionPool } from './whatsapp/session-pool';
import { detectTags, isFlagged } from './whatsapp/tag-detector';
import { syncGroups } from './whatsapp/group-sync';
import { handleStarReaction } from './core/approval';

const logger = createLogger('tower-worker');

async function bootstrap() {
  const env = validateEnv();
  const prisma = new PrismaClient();
  await prisma.$connect();

  const adminJids = env.TOWER_ADMIN_JIDS
    ? env.TOWER_ADMIN_JIDS.split(',').map((j) => j.trim()).filter(Boolean)
    : [];

  const ingestQueue = createIngestQueue(env.REDIS_URL);
  const forwardQueue = createForwardQueue(env.REDIS_URL);
  const pool = new WhatsAppSessionPool();

  const ingestWorker = createIngestWorker(env.REDIS_URL, prisma);
  const forwardWorker = createForwardWorker(env.REDIS_URL, pool);

  ingestWorker.on('completed', (job) => logger.info({ jobId: job.id }, 'Ingest job completed'));
  ingestWorker.on('failed', (job, err) => logger.error({ jobId: job?.id, err }, 'Ingest job failed'));
  forwardWorker.on('completed', (job) => logger.info({ jobId: job.id }, 'Forward job completed'));
  forwardWorker.on('failed', (job, err) => logger.error({ jobId: job?.id, err }, 'Forward job failed'));

  // Load active accounts from DB — each becomes one WhatsApp session
  const accounts = await prisma.account.findMany({
    where: { status: 'ACTIVE', platform: 'whatsapp' },
  });

  if (accounts.length === 0) {
    logger.warn('No active WhatsApp accounts found — add one via Prisma Studio (see Task 3 Step 5)');
  }

  // Per-account map of groupJid → DB Group id
  const groupMaps = new Map<string, Map<string, string>>();

  for (const account of accounts) {
    groupMaps.set(account.id, new Map());

    await pool.add(
      account.id,
      account.sessionPath,
      async (msg, accountId) => {
        const tags = detectTags(msg.content, msg.senderJid, adminJids);
        if (!isFlagged(tags)) return;

        const groupMap = groupMaps.get(accountId) ?? new Map();
        const sourceGroupId = groupMap.get(msg.sourceGroupJid);
        if (!sourceGroupId) {
          logger.warn({ jid: msg.sourceGroupJid, accountId }, 'Unknown group — skipping message');
          return;
        }

        await ingestQueue.add(
          'ingest',
          {
            platformMsgId: msg.platformMsgId,
            platform: 'whatsapp',
            accountId,
            sourceGroupId,
            senderJid: msg.senderJid,
            senderName: msg.senderName,
            content: msg.content,
            tags,
          },
          { attempts: 3, backoff: { type: 'exponential', delay: 1000 } },
        );

        logger.info({ platformMsgId: msg.platformMsgId, tags }, 'Message enqueued');
      },
      async (reaction) => {
        const forwardJobs = await handleStarReaction(reaction, adminJids, prisma);
        if (!forwardJobs || forwardJobs.length === 0) return;

        for (const job of forwardJobs) {
          await forwardQueue.add('forward', job, {
            attempts: 3,
            backoff: { type: 'exponential', delay: 2000 },
          });
        }

        logger.info(
          { count: forwardJobs.length, messageId: forwardJobs[0]?.messageId },
          'Forward jobs enqueued',
        );
      },
      async (groups, accountId) => {
        logger.info({ count: Object.keys(groups).length, accountId }, 'Syncing groups');
        const map = await syncGroups(groups, accountId, prisma);
        groupMaps.set(accountId, map);
      },
    );
  }

  logger.info({ accountCount: accounts.length }, 'Tower worker ready');

  const shutdown = async () => {
    logger.info('Shutting down...');
    await ingestWorker.close();
    await forwardWorker.close();
    await ingestQueue.close();
    await forwardQueue.close();
    await prisma.$disconnect();
    process.exit(0);
  };

  process.on('SIGTERM', shutdown);
  process.on('SIGINT', shutdown);
}

bootstrap().catch((err) => {
  console.error('Worker failed to start', err);
  process.exit(1);
});
```

- [ ] **Step 2: Build to confirm zero TypeScript errors**

```bash
pnpm --filter @tower/worker build
```

Expected: 0 errors. `dist/` created.

- [ ] **Step 3: Run all worker tests**

```bash
pnpm --filter @tower/worker test
```

Expected: all tests pass (normalizer ×13, approval ×7, forward.processor ×5).

- [ ] **Step 4: Start the worker and verify multi-account startup**

```bash
pnpm --filter @tower/worker dev
```

Expected log output (with one account seeded):

```
INFO (tower-worker): Tower worker ready {"accountCount": 1}
INFO (whatsapp-session): WhatsApp connected {"accountId": "acc_..."}
INFO (group-sync): Groups synced {"count": N, "accountId": "acc_..."}
```

If `accountCount` is 0, the account row wasn't inserted in Task 3 Step 5 — insert it now.

- [ ] **Step 5: End-to-end smoke test**

With the worker running and the WhatsApp session authenticated:

1. Send a message containing `#important` from a non-bot number to a group the bot is in.
2. Confirm the worker logs `"Message enqueued"` with the correct tags.
3. Check the DB: `psql "postgresql://tower:tower@localhost:5433/tower" -c 'SELECT status, tags FROM "Message" ORDER BY "createdAt" DESC LIMIT 3;'`
   Expected: one row with `status = PENDING` and `tags = {#important}`.
4. React to that message with ⭐ from an admin JID (the JID listed in `TOWER_ADMIN_JIDS` in `.env`).
5. Confirm the worker logs `"Forward jobs enqueued"`.
6. Check DB approvals: `SELECT decision, "adminId" FROM "Approval" ORDER BY "decidedAt" DESC LIMIT 1;`
   Expected: one row with `decision = APPROVED`.

- [ ] **Step 6: Commit**

```bash
git add apps/worker/src/main.ts
git commit -m "feat(worker): multi-account session pool, reactions → approval → forward pipeline"
```

---

## What this plan does NOT cover (Plan 4+)

- Admin dashboard UI for approving messages (Next.js — Plan 5)
- Meilisearch archive indexing (Plan 4)
- Adding a second bot account at runtime without restart (future: webhook endpoint to trigger `pool.add`)
- `/tower` bot command handling
- Rejection workflow (admin removes ⭐ or uses a different emoji/command)