import { describe, expect, it } from 'vitest';
import { ObjectId } from 'mongodb';
import {
  buildEmail,
  buildPush,
  dateLongFormat,
  normalizeLang,
  staticMapUrl,
  subjectTruncate,
  t,
  trim,
} from '../src/messages.js';
import type { NotificationDoc } from '../src/types.js';

function fakeNotif(overrides: Partial<NotificationDoc> = {}): NotificationDoc {
  return {
    _id: new ObjectId('0123456789abcdef01234567'),
    userId: 'user-1',
    subsId: new ObjectId('aaaaaaaaaaaaaaaaaaaaaaaa'),
    content: '🔥 Fuego cerca de tu zona en Galicia:',
    geo: { type: 'Point', coordinates: [-8.5, 42.3] }, // [lng, lat]
    type: 'mobile',
    when: new Date('2026-07-12T18:30:00Z'),
    sealed: 'fire-abc',
    ...overrides,
  };
}

describe('trim (ported from NotificationsObserver/util.js)', () => {
  it('strips leading 🔥 and trailing colon', () => {
    expect(trim('🔥 Fuego cerca:')).toBe('Fuego cerca');
  });
  it('leaves other text intact', () => {
    expect(trim('Fuego en el monte')).toBe('Fuego en el monte');
  });
});

describe('i18n strings (pinned from Meteor locales)', () => {
  it('title per language', () => {
    expect(t('Alerta de fuego', 'es')).toBe('Alerta de fuego');
    expect(t('Alerta de fuego', 'en')).toBe('Alert of fire');
  });
  it('AppName per language', () => {
    expect(t('AppName', 'es')).toBe('Tod@s contra el Fuego');
    expect(t('AppName', 'en')).toBe('All Against the Fire');
  });
  it('fireDetectedAt interpolates {{when}}', () => {
    expect(t('fireDetectedAt', 'es', { when: 'X' })).toBe('fuego detectado el X');
    expect(t('fireDetectedAt', 'en', { when: 'X' })).toBe('fire detected on X');
  });
});

describe('normalizeLang', () => {
  it('maps unknown langs to es', () => {
    expect(normalizeLang('fr')).toBe('es');
    expect(normalizeLang(undefined)).toBe('es');
    expect(normalizeLang('en-US')).toBe('en');
    expect(normalizeLang('gl')).toBe('gl');
  });
});

describe('subjectTruncate (ported)', () => {
  it('keeps short strings', () => {
    expect(subjectTruncate('short', 70)).toBe('short');
  });
  it('truncates on word boundary with ellipsis', () => {
    const s = 'a'.repeat(40) + ' ' + 'b'.repeat(40);
    const out = subjectTruncate(s, 70);
    expect(out.endsWith('...')).toBe(true);
    expect(out.length).toBeLessThanOrEqual(73);
  });
});

describe('buildPush (equivalent to old gcm.Message)', () => {
  it('produces title/body and full data payload', () => {
    const p = buildPush(fakeNotif(), 'es');
    expect(p.title).toBe('Alerta de fuego');
    expect(p.body).toBe('Fuego cerca de tu zona en Galicia'); // trimmed
    expect(p.clickAction).toBe('FLUTTER_NOTIFICATION_CLICK');
    expect(p.sound).toBe('default');
    expect(p.icon).toBe('launch_image');
    expect(p.collapseKey).toBe('0123456789abcdef01234567');
    expect(p.data.id).toBe('0123456789abcdef01234567');
    expect(p.data.description).toBe('Fuego cerca de tu zona en Galicia');
    expect(p.data.lat).toBe('42.3'); // coordinates[1]
    expect(p.data.lon).toBe('-8.5'); // coordinates[0]
    expect(p.data.sealed).toBe('fire-abc');
    expect(p.data.subsId).toBe('aaaaaaaaaaaaaaaaaaaaaaaa');
  });
  it('handles missing subsId', () => {
    const p = buildPush(fakeNotif({ subsId: undefined }), 'en');
    expect(p.data.subsId).toBe('');
    expect(p.title).toBe('Alert of fire');
  });
});

describe('buildEmail (equivalent to old processNotif web branch)', () => {
  it('builds subject, message and template vars', () => {
    const notif = fakeNotif({ type: 'web', content: '🔥 Incendio en A Coruña:' });
    const e = buildEmail(notif, 'es', 'Ana', {
      rootUrl: 'https://fuegos.comunes.org/',
      gmapsKey: 'KEY',
      fireIconUrl: 'https://x/icon.png',
    });
    expect(e.templateVars.firstName).toBe('Ana');
    expect(e.templateVars.applicationName).toBe('Tod@s contra el Fuego');
    expect(e.templateVars.message).toMatch(/^Incendio en A Coruña \(fuego detectado el .+\)\.$/);
    expect(e.templateVars.fireUrl).toBe('https://fuegos.comunes.org/fire/fire-abc');
    expect(e.templateVars.subsUrl).toBe('https://fuegos.comunes.org/subscriptions');
    expect(e.templateVars.img).toContain('maps.googleapis.com');
    expect(e.subject.length).toBeLessThanOrEqual(73);
  });
  it('normalizes rootUrl without trailing slash', () => {
    const e = buildEmail(fakeNotif({ type: 'web' }), 'en', 'Bob', {
      rootUrl: 'https://fires.comunes.org',
    });
    expect(e.templateVars.fireUrl).toBe('https://fires.comunes.org/fire/fire-abc');
  });
});

describe('staticMapUrl', () => {
  it('includes fire icon marker and coordinates', () => {
    const url = staticMapUrl(42.3, -8.5, { key: 'K', fireIconUrl: 'https://x/i.png' });
    expect(url).toContain('center=42.3%2C-8.5');
    expect(url).toContain('maptype=hybrid');
    expect(url).toContain('zoom=16');
    expect(url).toContain('key=K');
  });
});

describe('dateLongFormat', () => {
  it('returns a localized long date with zone', () => {
    const s = dateLongFormat(new Date('2026-07-12T18:30:00Z'), 'es', 'Europe/Madrid');
    expect(s).toMatch(/2026/);
    expect(s).toMatch(/\(.+\)$/); // zone in parens
  });
});