Temporary email API for automated testing.

import { test, expect } from '@playwright/test';

const apiBase = 'https://9mail.xyz/api/v1';
const token = process.env.NINEMAIL_API_TOKEN;
const pause = ms => new Promise(resolve => setTimeout(resolve, ms));

if (!token) throw new Error('NINEMAIL_API_TOKEN is required');

test('signup sends a verification email', async ({ page, request }) => {
  const headers = {
    Authorization: `Bearer ${token}`,
    Accept: 'application/json',
  };

  const create = await request.post(`${apiBase}/inboxes`, {
    headers,
    data: { ttl_minutes: 60 },
  });
  expect(create.status()).toBe(201);
  const { data: inbox } = await create.json();

  // Replace this URL and these selectors with the product under test.
  await page.goto('https://app.example.test/signup');
  await page.getByLabel('Email').fill(inbox.address);
  await page.getByRole('button', { name: 'Create account' }).click();

  const deadline = Date.now() + 30_000;
  let delayMs = 1_000;
  let summary;

  while (Date.now() < deadline) {
    const list = await request.get(
      `${apiBase}/inboxes/${inbox.uuid}/messages?per_page=25`,
      { headers },
    );

    if (list.status() === 410) throw new Error('Test inbox expired');

    if (list.status() === 429) {
      const retryMs = Number(list.headers()['retry-after'] ?? 1) * 1_000;
      await pause(Math.min(retryMs, 5_000, Math.max(0, deadline - Date.now())));
      continue;
    }

    expect(list.ok()).toBeTruthy();
    const payload = await list.json();
    summary = payload.data.find(message => message.subject === 'Verify your email');
    if (summary) break;

    await pause(Math.min(delayMs, Math.max(0, deadline - Date.now())));
    delayMs = Math.min(Math.ceil(delayMs * 1.5), 5_000);
  }

  expect(summary, 'verification email did not arrive before the deadline').toBeTruthy();

  const detail = await request.get(`${apiBase}/messages/${summary.uuid}`, { headers });
  expect(detail.ok()).toBeTruthy();
  const { data: message } = await detail.json();

  expect(message.to_addresses.some(recipient => recipient.email === inbox.address)).toBeTruthy();
  expect(message.text_body).toContain('Verify');
});