import test from 'node:test';
import assert from 'node:assert/strict';
import { computeRetryDelayMinutes } from '../src/services/notification-dispatcher.js';
import { createPushSender, classifyMessagingError } from '../src/services/notification-fcm.js';

test('computeRetryDelayMinutes backs off exponentially with a cap', () => {
  assert.equal(computeRetryDelayMinutes(1), 5);
  assert.equal(computeRetryDelayMinutes(2), 10);
  assert.equal(computeRetryDelayMinutes(3), 20);
  assert.equal(computeRetryDelayMinutes(5), 60);
  assert.equal(computeRetryDelayMinutes(9), 60);
});

test('classifyMessagingError distinguishes invalid and retryable push failures', () => {
  assert.equal(classifyMessagingError('messaging/registration-token-not-registered'), 'INVALID_TOKEN');
  assert.equal(classifyMessagingError('messaging/server-unavailable'), 'RETRYABLE');
  assert.equal(classifyMessagingError('messaging/unknown-problem'), 'FAILED');
});

test('createPushSender log-only mode simulates successful delivery results', async () => {
  const sender = createPushSender({ deliveryMode: 'log-only' });
  const results = await sender.send(
    {
      id: 'notification-1',
      notification_type: 'SHIFT_START_REMINDER',
      priority: 'HIGH',
      tenant_id: 'tenant-1',
      payload: { assignmentId: 'assignment-1' },
    },
    [
      { id: 'token-1', provider: 'FCM', pushToken: 'demo-token' },
    ]
  );

  assert.equal(results.length, 1);
  assert.equal(results[0].deliveryStatus, 'SIMULATED');
  assert.equal(results[0].transient, false);
});