import { createT, formatAmd, isLocale, LOCALES, type Locale } from '@barev/i18n';
import { Icon } from '@barev/ui';
import type { Metadata } from 'next';
import { getCatalog, type LandingOffer } from '../lib/data';
import { BotLink } from './client';
import { SERVICE_PAGES } from '../lib/services';
import { LegalLinks } from './legal';
import { FooterContacts, LegalLine } from './seo';

/** Главная (/) и «Уже живу» (/live): индексируются, у каждой свой canonical и hreflang */
export async function homeMetadata(params: Promise<{ locale: string }>, path: '' | '/live'): Promise<Metadata> {
  const { locale } = await params;
  if (!isLocale(locale)) return {};
  const t = createT(locale);
  const { offer } = await getCatalog();
  const title = t(path ? 'landing.live.metaTitle' : 'landing.home.metaTitle');
  const description = t(path ? 'landing.live.metaDescription' : 'landing.home.metaDescription', { pct: offer.eliteMaxPct });
  return {
    title,
    description,
    alternates: {
      canonical: `/${locale}${path}`,
      languages: Object.fromEntries([...LOCALES.map((l) => [l, `/${l}${path}`]), ['x-default', `/ru${path}`]]),
    },
    openGraph: { title, description, locale, type: 'website', siteName: 'Barev Club' },
  };
}

/** Переключатель аудитории: две версии главной — «Переезжаю» и «Уже живу в Армении» */
export function AudienceSwitch({ locale, current }: { locale: Locale; current: 'move' | 'live' }) {
  const t = createT(locale);
  return (
    <nav className="h-switch" aria-label={t('landing.home.switchLabel')}>
      <a href={`/${locale}`} aria-current={current === 'move' ? 'page' : undefined}>
        {t('landing.home.switchMove')}
      </a>
      <a href={`/${locale}/live`} aria-current={current === 'live' ? 'page' : undefined}>
        {t('landing.home.switchLive')}
      </a>
    </nav>
  );
}

/**
 * Тарифы как клубные карты: Barev — прозрачная, Barev+ — розовая, Elite — жёлтая.
 * Оформление подписки — в боте, поэтому все кнопки ведут туда.
 */
export function ClubPlans({ locale, plusPrice, offer }: { locale: Locale; plusPrice: number; offer: LandingOffer }) {
  const t = createT(locale);
  const amd = (n: number) => formatAmd(locale, n);
  const plans = [
    { id: 'free', name: 'Barev', price: t('landing.club.free'), cta: t('landing.club.freeCta') },
    { id: 'plus', name: 'Barev+', price: t('landing.club.perMonth', { price: amd(plusPrice) }), cta: t('landing.club.plusCta') },
    { id: 'elite', name: 'Barev Elite', price: t('landing.club.perMonth', { price: amd(offer.elitePrice) }), cta: t('landing.club.eliteCta') },
  ] as const;
  return (
    <section id="plans" className="h-plans" aria-labelledby="plans-title">
      <div className="h-section-head">
        <h2 id="plans-title">{t('landing.club.title')}</h2>
        <p>{t('landing.club.sub')}</p>
      </div>
      <div className="h-plans__grid">
        {plans.map((p) => (
          <article key={p.id} className="h-plan" data-plan={p.id}>
            <div className="h-card">
              <span className="h-card__club">Barev Club</span>
              <span className="h-card__chip" aria-hidden="true" />
              <h3 className="h-card__name">{p.name}</h3>
              <span className="h-card__price">{p.price}</span>
            </div>
            <ul className="h-plan__list">
              {[1, 2, 3].map((n) => (
                <li key={n}>
                  <Icon name="check" size={18} strokeWidth={2.6} />
                  {t(`landing.club.${p.id}F${n}`, { pct: p.id === 'elite' ? offer.eliteMaxPct : offer.plusMaxPct })}
                </li>
              ))}
            </ul>
            <BotLink className="bc-btn h-plan__cta">{p.cta}</BotLink>
          </article>
        ))}
      </div>
    </section>
  );
}

export function HomeFooter({ locale }: { locale: Locale }) {
  const t = createT(locale);
  return (
    <footer className="v-footer v-footer--dark">
      <nav className="h-footer__services" aria-label={t('landing.footer.services')}>
        {Object.values(SERVICE_PAGES).map((p) => (
          <a key={p.id} href={`/${locale}${p.path}`}>
            {t(`landing.svc.${p.id}.crumb`)}
          </a>
        ))}
        <a href={`/${locale}/clean`}>{t('landing.svc.common.clean')}</a>
      </nav>
      <span className="h-footer__brand">
        {t('landing.footer.brand')}
        <LegalLine locale={locale} className="h-footer__legal" />
      </span>
      <span className="h-footer__links">
        <FooterContacts />
        <BotLink>{t('landing.footer.partner')}</BotLink>
        <LegalLinks locale={locale} />
      </span>
    </footer>
  );
}