import { getPublicPostsPreviewBySlug } from "#server/service/posts";
import { getPublicTimelinePreviewBySlug } from "#server/service/timeline";
import { getPublicRssPreviewBySlug } from "#server/service/rss";

const PUBLIC_HUB_PREVIEW_LIMIT = 2;

type PublicPostsPreview = Awaited<ReturnType<typeof getPublicPostsPreviewBySlug>>;
type PublicTimelinePreview = Awaited<
  ReturnType<typeof getPublicTimelinePreviewBySlug>
>;
type PublicRssPreview = Awaited<ReturnType<typeof getPublicRssPreviewBySlug>>;

export type PublicHubPayload = {
  modules: {
    posts: PublicPostsPreview;
    timeline: PublicTimelinePreview;
    reading: PublicRssPreview;
  };
  posts: PublicPostsPreview;
  timeline: PublicTimelinePreview;
  rssItems: PublicRssPreview;
};

export async function getPublicHubBySlug(
  publicSlug: string,
): Promise<PublicHubPayload> {
  const [posts, timeline, reading] = await Promise.all([
    getPublicPostsPreviewBySlug(publicSlug),
    getPublicTimelinePreviewBySlug(publicSlug),
    getPublicRssPreviewBySlug(publicSlug),
  ]);

  return {
    modules: {
      posts: {
        items: posts.items.slice(0, PUBLIC_HUB_PREVIEW_LIMIT),
        total: posts.total,
      },
      timeline: {
        items: timeline.items.slice(0, PUBLIC_HUB_PREVIEW_LIMIT),
        total: timeline.total,
      },
      reading: {
        items: reading.items.slice(0, PUBLIC_HUB_PREVIEW_LIMIT),
        total: reading.total,
      },
    },
    posts,
    timeline,
    rssItems: reading,
  };
}