/**
 * Everything the landing page renders, fetched on the server in one pass.
 *
 * The API is designed for a server-rendered frontend — slugs instead of ids,
 * `Vary: Accept-Language`, per-address submission throttling — so the whole
 * page is assembled here and hydrated with the result. Calls run in parallel
 * and none of them can reject: a section whose endpoint failed renders empty
 * instead of taking the page down with it.
 */
import type { PageServerLoad } from '@analogjs/router';

import {
  localeFromUrl,
  pireonApi,
  type Locale,
  type MaintenanceNotice,
  type SitePayload,
} from '../core/api';
import type {
  PublicCall,
  PublicClient,
  PublicIssue,
  PublicMember,
  PublicPage,
  PublicProject,
  PublicService,
  PublicTalk,
  PublicTechnology,
  PublicTestimonial,
} from '../core/api.types';

export interface LandingData {
  locale: Locale;
  site: SitePayload | null;
  maintenance: MaintenanceNotice | null;
  services: PublicService[];
  projects: PublicProject[];
  clients: PublicClient[];
  testimonials: PublicTestimonial[];
  radar: PublicTechnology[];
  members: PublicMember[];
  calls: PublicCall[];
  issues: PublicIssue[];
  talks: PublicTalk[];
  /** The pages the panel publishes: featured ones in the nav, all of them in the footer. */
  pages: PublicPage[];
}

export const load = async ({ req }: PageServerLoad): Promise<LandingData> => {
  // `params` carries route parameters only, and Analog resolves loaders
  // through an internal request that forwards the query string but not the
  // headers — so `?lang=` is the one signal available here.
  const locale = localeFromUrl(req?.url);

  const [
    site,
    services,
    projects,
    clients,
    testimonials,
    radar,
    members,
    calls,
    issues,
    talks,
    pages,
  ] = await Promise.all([
    pireonApi.site(locale),
    pireonApi.services(locale),
    pireonApi.projects(locale, { per_page: 6, translated: true }),
    pireonApi.clients(locale),
    pireonApi.testimonials(locale),
    pireonApi.radar(locale),
    pireonApi.members(locale),
    pireonApi.calls(locale),
    pireonApi.goodFirstIssues({ limit: 6 }),
    pireonApi.talks(locale, { limit: 6 }),
    pireonApi.pages(locale, { per_page: 100 }),
  ]);

  return {
    locale,
    site: site.data,
    // `/site` is the one call worth believing about maintenance: it is the
    // endpoint the frontend hits on every page anyway.
    maintenance: site.maintenance,
    services: services.data ?? [],
    projects: projects.data ?? [],
    clients: clients.data ?? [],
    testimonials: testimonials.data ?? [],
    radar: radar.data ?? [],
    members: members.data ?? [],
    calls: calls.data ?? [],
    issues: issues.data ?? [],
    talks: talks.data ?? [],
    pages: pages.data ?? [],
  };
};