import { describe, expect, it } from 'vitest';

import { renderFailureMail } from './mail.js';

const input = {
  backupId: '20260711-030000',
  error: 'pg_dump failed: connection refused',
  lastSuccessAt: '2026-07-10T03:00:12.000Z',
};

describe('renderFailureMail', () => {
  it('renders the English alert with all details interpolated', () => {
    const mail = renderFailureMail(input, 'en', 'dorfteich-test');
    expect(mail.subject).toBe('[dorfteich-test] Backup failed (20260711-030000)');
    expect(mail.text).toContain('Backup id: 20260711-030000');
    expect(mail.text).toContain('Error: pg_dump failed: connection refused');
    expect(mail.text).toContain('Last successful backup: 2026-07-10T03:00:12.000Z');
  });

  it('renders the German alert', () => {
    const mail = renderFailureMail(input, 'de', 'dorfteich-test');
    expect(mail.subject).toBe('[dorfteich-test] Backup fehlgeschlagen (20260711-030000)');
    expect(mail.text).toContain('Fehler: pg_dump failed: connection refused');
  });

  it('states when no backup ever succeeded', () => {
    const mail = renderFailureMail({ ...input, lastSuccessAt: null }, 'en', 'Dorfteich');
    expect(mail.text).toContain('Last successful backup: none yet');
  });
});