Adding SMS automation

apps/api/src/message-automations/__tests__/message-automation.check.ts

@@ -0,0 +1,58 @@
+import {
+  applyMessageTemplate,
+  buildSendAts,
+  cancelTriggersFor,
+  clipSms,
+  delayMs,
+} from '../message-automation.util';
+
+function assert(cond: unknown, msg: string): asserts cond {
+  if (!cond) throw new Error(msg);
+}
+
+function testDelay() {
+  assert(delayMs(0, 'minutes') === 0, 'zero delay');
+  assert(delayMs(2, 'hours') === 2 * 3_600_000, '2 hours');
+  assert(delayMs(2, 'days') === 2 * 86_400_000, '2 days');
+}
+
+function testSendAts() {
+  const now = new Date('2026-09-13T12:00:00.000Z');
+  const once = buildSendAts(now, 0, 'minutes', 1, 2, 'days');
+  assert(once.length === 1, 'one send');
+  assert(once[0].getTime() === now.getTime(), 'immediate first');
+
+  const three = buildSendAts(now, 1, 'hours', 3, 2, 'days');
+  assert(three.length === 3, 'three sends');
+  assert(three[0].getTime() === now.getTime() + 3_600_000, 'start + 1h');
+  assert(
+    three[1].getTime() === three[0].getTime() + 2 * 86_400_000,
+    'second + 2 days',
+  );
+  assert(
+    three[2].getTime() === three[0].getTime() + 4 * 86_400_000,
+    'third + 4 days',
+  );
+}
+
+function testCancelMap() {
+  assert(
+    cancelTriggersFor('invoice_paid').includes('invoice_issued'),
+    'paid cancels issued',
+  );
+  assert(cancelTriggersFor('person_created').length === 0, 'no cancel on create');
+}
+
+function testTemplate() {
+  assert(
+    applyMessageTemplate('سلام {title}', 'فاکتور ۱۲') === 'سلام فاکتور ۱۲',
+    'title var',
+  );
+  assert(clipSms('الف'.repeat(200)).length === 160, 'sms clip');
+}
+
+testDelay();
+testSendAts();
+testCancelMap();
+testTemplate();
+console.log('message-automation checks passed');