Added missing weight emails

2026-09-05 22:51:39 -04:00
parent b4254a68fa
commit 5abc7f6174
13 changed files with 501 additions and 0 deletions
@@ -1,3 +1,4 @@
+import type { WeightReminder } from './reminders/weightReminders.js';
 import crypto from 'crypto';
 import { existsSync } from 'fs';
 import path from 'path';
@@ -2270,6 +2271,19 @@ export const runBirdMilestoneReminders = async (runDate = getDateInTimeZone()) =
  };
 };

+export const sendWeightReminderNotification = async (reminders: WeightReminder[]): Promise<boolean> => {
+  if (!mailTransport || !reminders.length) return false;
+  const first = reminders[0];
+  const result = await mailTransport.sendMail({
+    from: smtpFromName ? `"${smtpFromName}" <${smtpFromEmail}>` : smtpFromEmail,
+    to: first.recipient,
+    subject: `Weight reminders for ${first.workspace_name}`,
+    text: `These birds in ${first.workspace_name} haven't had a new weight entry in at least 48 hours:\n\n${reminders.map((bird) => `- ${bird.bird_name}`).join('\n')}\n\nOpen FlockPal to record their weights: ${frontendBaseUrl}`,
+    html: `<p>These birds in ${escapeHtml(first.workspace_name)} haven't had a new weight entry in at least 48 hours:</p><ul>${reminders.map((bird) => `<li>${escapeHtml(bird.bird_name)}</li>`).join('')}</ul><p><a href="${escapeHtml(frontendBaseUrl)}">Open FlockPal to record their weights</a></p>`,
+  });
+  return result.accepted.length > 0;
+};
+
 export const runMedicationReminders = async (runDate = getDateInTimeZone(), currentTime = getTimeInTimeZone()) => {
  const reminders = await listDueMedicationReminders(runDate, currentTime);
  let sent = 0;
@@ -480,6 +480,17 @@ export const ensureSchema = async (database: DatabaseClient = db) => {
      UNIQUE (bird_id, recorded_on)
    );

+    CREATE TABLE IF NOT EXISTS weight_reminder_deliveries (
+      bird_id UUID NOT NULL REFERENCES birds(id) ON DELETE CASCADE,
+      workspace_id INTEGER NOT NULL REFERENCES workspaces(id) ON DELETE CASCADE,
+      activity_at TIMESTAMPTZ NOT NULL,
+      recipient TEXT NOT NULL,
+      claim_token UUID NOT NULL,
+      claimed_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
+      delivered_at TIMESTAMPTZ,
+      PRIMARY KEY (bird_id, workspace_id, activity_at, recipient)
+    );
+
    CREATE TABLE IF NOT EXISTS vet_visits (
      id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
      bird_id UUID NOT NULL REFERENCES birds(id) ON DELETE CASCADE,
@@ -0,0 +1,26 @@
+import { Queue } from 'bullmq';
+import { redisConnection } from './redisConnection.js';
+
+export const weightReminderQueueName = 'weight-reminders';
+export const weightReminderQueue = new Queue(weightReminderQueueName, {
+  connection: redisConnection,
+  defaultJobOptions: {
+    attempts: 3,
+    backoff: { type: 'exponential', delay: 60_000 },
+    removeOnComplete: 100,
+    removeOnFail: 1000,
+  },
+});
+
+export const startWeightReminderScheduler = async () => {
+  if (process.env.WEIGHT_REMINDERS_ENABLED === 'false') {
+    await weightReminderQueue.removeJobScheduler('weight-reminders');
+    return;
+  }
+  await weightReminderQueue.setGlobalConcurrency(1);
+  await weightReminderQueue.upsertJobScheduler(
+    'weight-reminders',
+    { every: 5 * 60_000 },
+    { name: 'check-overdue-weights', data: {} },
+  );
+};
@@ -0,0 +1,60 @@
+import assert from 'node:assert/strict';
+import { test } from 'node:test';
+import { runWeightReminders, type WeightReminder } from './weightReminders.js';
+
+const bird = (id: string, workspace = 1, recipient = 'owner@example.com'): WeightReminder => ({
+  bird_id: id, workspace_id: workspace, recipient,
+  bird_name: id, workspace_name: `Flock ${workspace}`, activity_at: '2026-09-01T12:00:00Z',
+});
+
+test('groups overdue birds into one email per flock and recipient', async () => {
+  const sent: WeightReminder[][] = [];
+  const finished: boolean[] = [];
+  const result = await runWeightReminders(async (birds) => { sent.push(birds); return true; }, {
+    list: async () => [bird('a'), bird('b'), bird('c', 2), bird('a', 1, 'caregiver@example.com')],
+    claim: async () => true,
+    finish: async (_token, delivered) => { finished.push(delivered); },
+  });
+  assert.deepEqual(sent.map((group) => group.map((item) => item.bird_id)), [['a', 'b'], ['c'], ['a']]);
+  assert.deepEqual(finished, [true, true, true, true]);
+  assert.equal(result.sent, 3);
+});
+
+test('omits birds whose claim was lost or whose weight changed', async () => {
+  const sent: WeightReminder[][] = [];
+  await runWeightReminders(async (birds) => { sent.push(birds); return true; }, {
+    list: async () => [bird('a'), bird('b')],
+    claim: async (reminder) => reminder.bird_id === 'b', finish: async () => {},
+  });
+  assert.deepEqual(sent.map((group) => group.map((item) => item.bird_id)), [['b']]);
+});
+
+test('does not email when all claims are unavailable', async () => {
+  await runWeightReminders(async () => { assert.fail('Unexpected email'); }, {
+    list: async () => [bird('a')], claim: async () => false, finish: async () => {},
+  });
+});
+
+test('missing SMTP releases all claims without recording delivery', async () => {
+  const finished: boolean[] = [];
+  const result = await runWeightReminders(async () => false, {
+    list: async () => [bird('a'), bird('b')], claim: async () => true,
+    finish: async (_token, delivered) => { finished.push(delivered); },
+  });
+  assert.deepEqual(finished, [false, false]);
+  assert.equal(result.sent, 0);
+});
+
+test('SMTP failure releases claims and still processes other flocks', async () => {
+  const finished: boolean[] = [];
+  const result = await runWeightReminders(async (birds) => {
+    if (birds[0].workspace_id === 1) throw new Error('SMTP unavailable');
+    return true;
+  }, {
+    list: async () => [bird('a'), bird('b'), bird('c', 2)], claim: async () => true,
+    finish: async (_token, delivered) => { finished.push(delivered); },
+  });
+  assert.deepEqual(finished, [false, false, true]);
+  assert.equal(result.sent, 1);
+  assert.equal(result.failed, 1);
+});
@@ -0,0 +1,121 @@
+import { randomUUID } from 'node:crypto';
+import { db } from '../db/client.js';
+
+export type WeightReminder = {
+  bird_id: string;
+  workspace_id: number;
+  bird_name: string;
+  workspace_name: string;
+  activity_at: string;
+  recipient: string;
+};
+
+// Use entry creation time: recorded_on is a date and cannot measure elapsed hours.
+// Editing an existing entry does not reset the reminder clock.
+export const listDueWeightReminders = async () => {
+  const result = await db.query<WeightReminder>(`
+    WITH activity AS (
+      SELECT birds.id AS bird_id, birds.workspace_id, birds.name AS bird_name,
+             workspaces.name AS workspace_name,
+             GREATEST(birds.created_at, COALESCE(MAX(weight_records.created_at), birds.created_at)) AS activity_at
+      FROM birds
+      JOIN workspaces ON workspaces.id = birds.workspace_id
+      LEFT JOIN weight_records ON weight_records.bird_id = birds.id
+      WHERE birds.memorialized_at IS NULL
+      GROUP BY birds.id, workspaces.name
+    ), recipients AS (
+      SELECT DISTINCT workspace_id, LOWER(TRIM(users.email)) AS recipient
+      FROM workspace_members
+      JOIN users ON users.id = workspace_members.user_id
+      WHERE accepted_at IS NOT NULL
+        AND role IN ('owner', 'assistant', 'caregiver')
+    )
+    SELECT activity.bird_id, activity.workspace_id, activity.bird_name, activity.workspace_name,
+           activity.activity_at::text, recipients.recipient
+    FROM activity
+    JOIN recipients USING (workspace_id)
+    WHERE activity_at <= CURRENT_TIMESTAMP - INTERVAL '48 hours'
+      AND recipients.recipient <> ''
+      AND NOT EXISTS (
+        SELECT 1 FROM weight_reminder_deliveries d
+        WHERE d.bird_id = activity.bird_id AND d.workspace_id = activity.workspace_id
+          AND d.activity_at = activity.activity_at AND d.recipient = recipients.recipient
+          AND (d.delivered_at > CURRENT_TIMESTAMP - INTERVAL '48 hours'
+               OR (d.delivered_at IS NULL AND d.claimed_at > CURRENT_TIMESTAMP - INTERVAL '15 minutes'))
+      )
+    ORDER BY activity.workspace_id, activity.bird_id, recipients.recipient
+  `);
+  return result.rows;
+};
+
+export const claimWeightReminder = async (reminder: WeightReminder, token: string) => {
+  const result = await db.query(`
+    INSERT INTO weight_reminder_deliveries (bird_id, workspace_id, activity_at, recipient, claim_token)
+    SELECT $1, $2, $3, $4, $5
+    WHERE EXISTS (
+      SELECT 1 FROM birds
+      WHERE id = $1 AND workspace_id = $2 AND memorialized_at IS NULL
+        AND GREATEST(created_at, COALESCE((SELECT MAX(created_at) FROM weight_records WHERE bird_id = $1), created_at)) = $3::timestamptz
+    )
+    ON CONFLICT (bird_id, workspace_id, activity_at, recipient) DO UPDATE
+      SET claim_token = EXCLUDED.claim_token, claimed_at = CURRENT_TIMESTAMP, delivered_at = NULL
+      WHERE weight_reminder_deliveries.delivered_at <= CURRENT_TIMESTAMP - INTERVAL '48 hours'
+         OR (weight_reminder_deliveries.delivered_at IS NULL
+             AND weight_reminder_deliveries.claimed_at <= CURRENT_TIMESTAMP - INTERVAL '15 minutes')
+    RETURNING bird_id
+  `, [reminder.bird_id, reminder.workspace_id, reminder.activity_at, reminder.recipient, token]);
+  return Boolean(result.rowCount);
+};
+
+export const finishWeightReminder = async (token: string, delivered: boolean) => {
+  if (delivered) {
+    await db.query('UPDATE weight_reminder_deliveries SET delivered_at = CURRENT_TIMESTAMP WHERE claim_token = $1', [token]);
+  } else {
+    await db.query('DELETE FROM weight_reminder_deliveries WHERE claim_token = $1 AND delivered_at IS NULL', [token]);
+  }
+};
+
+type Dependencies = {
+  list: typeof listDueWeightReminders;
+  claim: typeof claimWeightReminder;
+  finish: typeof finishWeightReminder;
+};
+
+export const runWeightReminders = async (
+  send: (reminders: WeightReminder[]) => Promise<boolean>,
+  dependencies: Dependencies = { list: listDueWeightReminders, claim: claimWeightReminder, finish: finishWeightReminder },
+) => {
+  const reminders = await dependencies.list();
+  const result = { checked: reminders.length, sent: 0, skipped: 0, failed: 0 };
+  const groups = new Map<string, WeightReminder[]>();
+  for (const reminder of reminders) {
+    const key = JSON.stringify([reminder.workspace_id, reminder.recipient]);
+    groups.set(key, [...(groups.get(key) ?? []), reminder]);
+  }
+  for (const group of groups.values()) {
+    const claimed: { reminder: WeightReminder; token: string }[] = [];
+    let delivered = false;
+    try {
+      for (const reminder of group) {
+        const token = randomUUID();
+        if (await dependencies.claim(reminder, token)) claimed.push({ reminder, token });
+        else result.skipped += 1;
+      }
+      if (!claimed.length) continue;
+      delivered = await send(claimed.map(({ reminder }) => reminder));
+      for (const { token } of claimed) await dependencies.finish(token, delivered);
+      if (delivered) result.sent += 1;
+      else result.skipped += claimed.length;
+    } catch (error) {
+      result.failed += 1;
+      // Keep leases if SMTP accepted the email but saving delivery failed.
+      if (!delivered) {
+        for (const { token } of claimed) {
+          await dependencies.finish(token, false).catch((cleanupError) => console.error('Weight reminder claim cleanup failed', cleanupError));
+        }
+      }
+      console.error(`Weight reminder failed for flock ${group[0].workspace_id}`, error);
+    }
+  }
+  return result;
+};
@@ -1,8 +1,11 @@
+import { runWeightReminders } from './reminders/weightReminders.js';
+import { weightReminderQueue, weightReminderQueueName, startWeightReminderScheduler } from './queues/weightReminderQueue.js';
 import { Worker } from 'bullmq';

 import { ensureSchema } from './db/schema.js';
 import { db } from './db/client.js';
 import {
+  sendWeightReminderNotification,
  runBirdMilestoneReminders,
  runMedicationReminders,
  startBirdMilestoneReminderScheduler,
@@ -29,6 +32,7 @@ import {
 import { redisConnection } from './queues/redisConnection.js';
 import { renderAdoptionReportForBird } from './reports/adoptionReportJob.js';

+let weightReminderWorker: Worker | null = null;
 let birdMilestoneWorker: Worker<BirdMilestoneReminderJobData, BirdMilestoneReminderJobResult> | null = null;
 let medicationReminderWorker: Worker<MedicationReminderJobData, MedicationReminderJobResult> | null = null;
 let adoptionReportWorker: Worker<AdoptionReportJobData, AdoptionReportJobResult> | null = null;
@@ -93,6 +97,16 @@ const startWorker = async () => {
    console.error(`Adoption report job failed: id=${job?.id ?? 'unknown'}, birdId=${job?.data.birdId ?? 'unknown'}`, error);
  });

+  weightReminderWorker = new Worker(weightReminderQueueName, async () => {
+    if (process.env.WEIGHT_REMINDERS_ENABLED === 'false') return;
+    const result = await runWeightReminders(sendWeightReminderNotification);
+    console.log('Weight reminder job completed', result);
+    return result;
+  }, { connection: redisConnection, concurrency: 1 });
+  weightReminderWorker.on('failed', (job, error) => {
+    console.error(`Weight reminder job failed: id=${job?.id ?? 'unknown'}`, error);
+  });
+  await startWeightReminderScheduler();
  startBirdMilestoneReminderScheduler();
  startMedicationReminderScheduler();
  console.log('FlockPal worker started.');
@@ -100,6 +114,8 @@ const startWorker = async () => {

 const shutdown = async (signal: string) => {
  console.log(`FlockPal worker received ${signal}; shutting down.`);
+  await weightReminderWorker?.close();
+  await weightReminderQueue.close();
  await birdMilestoneWorker?.close();
  await medicationReminderWorker?.close();
  await adoptionReportWorker?.close();
@@ -0,0 +1,26 @@
+services:
+  postgres:
+    image: postgres:16-alpine
+    environment:
+      POSTGRES_USER: flockpal_test
+      POSTGRES_PASSWORD: isolated_test_password
+      POSTGRES_DB: flockpal_weight_test
+    ports:
+      - '127.0.0.1:25432:5432'
+    tmpfs:
+      - /var/lib/postgresql/data
+    healthcheck:
+      test: ['CMD-SHELL', 'pg_isready -U flockpal_test -d flockpal_weight_test']
+      interval: 1s
+      timeout: 3s
+      retries: 30
+  redis:
+    image: redis:7-alpine
+    command: ['redis-server', '--save', '', '--appendonly', 'no']
+    ports:
+      - '127.0.0.1:26379:6379'
+  mail:
+    image: axllent/mailpit:latest
+    ports:
+      - '127.0.0.1:21025:1025'
+      - '127.0.0.1:28025:8025'
@@ -0,0 +1,166 @@
+// Run only against disposable local Postgres, Redis, and Mailpit services.
+// See docs/WEIGHT_REMINDER_TESTING.md for the isolated Compose setup.
+import assert from 'node:assert/strict';
+import { randomUUID } from 'node:crypto';
+import { spawn } from 'node:child_process';
+import { once } from 'node:events';
+import { fileURLToPath } from 'node:url';
+
+Object.assign(process.env, {
+  POSTGRES_HOST: '127.0.0.1', POSTGRES_PORT: '25432', POSTGRES_DB: 'flockpal_weight_test',
+  POSTGRES_USER: 'flockpal_test', POSTGRES_PASSWORD: 'isolated_test_password',
+  REDIS_URL: 'redis://127.0.0.1:26379',
+  SMTP_HOST: '127.0.0.1', SMTP_PORT: '21025', SMTP_SECURE: 'false',
+  SMTP_USER: '', SMTP_PASS: '', SMTP_FROM_EMAIL: 'reminders@flockpal.test', SMTP_FROM_NAME: 'FlockPal Test',
+  FRONTEND_URL: 'http://flockpal.test', MILESTONE_REMINDERS_ENABLED: 'false',
+  MEDICATION_REMINDERS_ENABLED: 'false', WEIGHT_REMINDERS_ENABLED: 'true',
+});
+const { db } = await import('../dist/db/client.js');
+const { ensureSchema } = await import('../dist/db/schema.js');
+const { listDueWeightReminders, claimWeightReminder, finishWeightReminder } = await import('../dist/reminders/weightReminders.js');
+const { weightReminderQueue, startWeightReminderScheduler } = await import('../dist/queues/weightReminderQueue.js');
+const workers = [];
+let logs = '';
+const poll = async (check, label) => {
+  const deadline = Date.now() + 30_000;
+  while (Date.now() < deadline) {
+    if (await check()) return;
+    await new Promise(resolve => setTimeout(resolve, 100));
+  }
+  throw new Error(`Timed out: ${label}\n${logs}`);
+};
+const messages = async () => (await (await fetch('http://127.0.0.1:28025/api/v1/messages')).json()).messages;
+const startWorker = () => {
+  const child = spawn(process.execPath, [fileURLToPath(new URL('../dist/worker.js', import.meta.url))], {
+    cwd: '/tmp', env: process.env, stdio: ['ignore', 'pipe', 'pipe'],
+  });
+  child.stdout.on('data', data => { logs += data; });
+  child.stderr.on('data', data => { logs += data; });
+  workers.push(child);
+};
+const stopWorkers = async () => {
+  const exits = workers.map(child => once(child, 'exit'));
+  for (const child of workers) child.kill('SIGTERM');
+  await Promise.all(exits);
+  workers.length = 0;
+};
+const drain = async () => {
+  await poll(async () => {
+    const counts = await weightReminderQueue.getJobCounts('active', 'waiting');
+    return !counts.active && !counts.waiting;
+  }, 'queue drain');
+};
+const runJob = async () => {
+  const job = await weightReminderQueue.add('integration-check', {});
+  await poll(async () => ['completed', 'failed'].includes(await job.getState()), 'manual job');
+  assert.equal(await job.getState(), 'completed');
+  return (await weightReminderQueue.getJob(job.id)).returnvalue;
+};
+try {
+  await ensureSchema();
+  await ensureSchema();
+  assert.equal((await db.query('SELECT COUNT(*)::int AS count FROM birds')).rows[0].count, 0, 'Use a fresh disposable database');
+  assert.equal((await messages()).length, 0, 'Use a fresh email catcher');
+  await db.query("INSERT INTO workspaces (id, name) VALUES (101, 'Test Flock'), (102, 'Other Flock')");
+  const ids = {};
+  for (const [role, accepted] of [['owner', true], ['assistant', true], ['caregiver', true], ['viewer', true], ['pending', false]]) {
+    const id = randomUUID(); ids[role] = id;
+    await db.query('INSERT INTO users (id, email, name) VALUES ($1, $2, $3)', [id, `${role}@example.test`, role]);
+    await db.query(`INSERT INTO workspace_members (workspace_id, user_id, invite_email, name, role, accepted_at)
+      VALUES (101, $1, $2, $3, $4, ${accepted ? 'CURRENT_TIMESTAMP' : 'NULL'})`, [id, `${role}@example.test`, role, role === 'pending' ? 'caregiver' : role]);
+  }
+  await db.query("INSERT INTO workspace_members (workspace_id, user_id, invite_email, name, role, accepted_at) VALUES (102, $1, 'owner@example.test', 'owner', 'owner', CURRENT_TIMESTAMP)", [ids.owner]);
+  const birds = {};
+  for (const [name, age, memorial, workspace] of [
+    ['Kiwi & <Peep>', 72, false, 101], ['Boundary', 48, false, 101],
+    ['No weights', null, false, 101], ['Recent', 47, false, 101],
+    ['Memorial', 72, true, 101], ['Other bird', 72, false, 102],
+  ]) {
+    const id = randomUUID(); birds[name] = id;
+    await db.query(`INSERT INTO birds (id, workspace_id, name, species, created_at, memorialized_at)
+      VALUES ($1, $2, $3, 'Cockatiel', CURRENT_TIMESTAMP - INTERVAL '100 hours', ${memorial ? 'CURRENT_TIMESTAMP' : 'NULL'})`, [id, workspace, name]);
+    if (age !== null) await db.query("INSERT INTO weight_records (bird_id, weight_grams, recorded_on, created_at) VALUES ($1, 90, CURRENT_DATE - 3, CURRENT_TIMESTAMP - $2 * INTERVAL '1 hour')", [id, age]);
+  }
+  const due = await listDueWeightReminders();
+  assert.equal(due.length, 10);
+  assert.deepEqual(new Set(due.map(b => b.recipient)), new Set(['owner@example.test', 'assistant@example.test', 'caregiver@example.test']));
+  const candidate = due[0];
+  const tokens = [randomUUID(), randomUUID()];
+  const claims = await Promise.all(tokens.map(token => claimWeightReminder(candidate, token)));
+  assert.equal(claims.filter(Boolean).length, 1, 'Only one concurrent claim wins');
+  await finishWeightReminder(tokens[claims.indexOf(true)], false);
+  console.log('PASS: schema initialization is repeatable; eligibility, roles, and concurrent claims');
+
+  startWorker(); startWorker();
+  await poll(async () => (await messages()).length === 4, 'initial grouped emails');
+  await drain();
+  const initial = await messages();
+  const bodies = await Promise.all(initial.map(async message => (await fetch(`http://127.0.0.1:28025/api/v1/message/${message.ID}`)).json()));
+  for (const body of bodies) {
+    if (body.Subject === 'Weight reminders for Test Flock') {
+      for (const name of ['Kiwi & <Peep>', 'Boundary', 'No weights']) assert.ok(body.Text.includes(name));
+      assert.ok(body.HTML.includes('Kiwi &amp; &lt;Peep&gt;'));
+      assert.ok(!body.Text.includes('Memorial'));
+      assert.ok(!body.Text.includes('Recent'));
+      assert.ok(!body.Text.includes('Other bird'));
+    } else {
+      assert.equal(body.Subject, 'Weight reminders for Other Flock');
+      assert.ok(body.Text.includes('Other bird'));
+      assert.ok(!body.Text.includes('Boundary'));
+    }
+    assert.equal(body.To.length, 1);
+  }
+  assert.equal((await weightReminderQueue.getJobSchedulers()).length, 1);
+  assert.equal(await weightReminderQueue.getGlobalConcurrency(), 1);
+  assert.equal((await runJob()).sent, 0);
+  assert.equal((await messages()).length, 4);
+  console.log('PASS: two real workers, one scheduler, grouped SMTP delivery, escaping, flock isolation, no immediate duplicates');
+
+  await db.query("UPDATE weight_reminder_deliveries SET delivered_at = CURRENT_TIMESTAMP - INTERVAL '47 hours'");
+  assert.equal((await runJob()).sent, 0);
+  await db.query("UPDATE weight_reminder_deliveries SET delivered_at = CURRENT_TIMESTAMP - INTERVAL '48 hours'");
+  assert.equal((await runJob()).sent, 4);
+  assert.equal((await messages()).length, 8);
+  await db.query("INSERT INTO weight_records (bird_id, weight_grams, recorded_on) VALUES ($1, 91, CURRENT_DATE)", [birds.Boundary]);
+  await db.query("UPDATE weight_reminder_deliveries SET delivered_at = CURRENT_TIMESTAMP - INTERVAL '49 hours'");
+  assert.ok((await listDueWeightReminders()).every(b => b.bird_id !== birds.Boundary));
+  assert.equal((await runJob()).sent, 4);
+  console.log('PASS: no repeat before 48 hours, repeat after 48 hours, fresh weight resets eligibility');
+
+  await stopWorkers();
+  await db.query("UPDATE weight_reminder_deliveries SET delivered_at = CURRENT_TIMESTAMP - INTERVAL '49 hours'");
+  const beforeFailures = (await messages()).length;
+  process.env.SMTP_HOST = '';
+  startWorker();
+  assert.equal((await runJob()).sent, 0);
+  assert.equal((await listDueWeightReminders()).length, 7);
+  await stopWorkers();
+
+  process.env.SMTP_HOST = '127.0.0.1';
+  process.env.SMTP_PORT = '21026'; // No SMTP listener: exercise a real refused connection.
+  startWorker();
+  const failed = await runJob();
+  assert.equal(failed.failed, 4);
+  assert.equal(failed.sent, 0);
+  assert.equal((await listDueWeightReminders()).length, 7);
+  assert.equal((await messages()).length, beforeFailures);
+  await stopWorkers();
+
+  process.env.SMTP_PORT = '21025';
+  startWorker();
+  await runJob();
+  await poll(async () => (await messages()).length === beforeFailures + 4, 'delivery after SMTP recovery');
+  await drain();
+  await stopWorkers();
+  console.log('PASS: missing SMTP, real SMTP connection failure, released claims, successful retry');
+
+  process.env.WEIGHT_REMINDERS_ENABLED = 'false';
+  await startWeightReminderScheduler();
+  assert.equal((await weightReminderQueue.getJobSchedulers()).length, 0);
+  console.log('PASS: graceful worker shutdown and disabled scheduler removal');
+  console.log('All Postgres / Redis / SMTP integration checks passed.');
+} finally {
+  for (const child of workers) child.kill('SIGKILL');
+  await weightReminderQueue.close();
+  await db.close();
+}