import { Document } from "@lib/documents.ts";
import * as cache from "@lib/cache/cache.ts";

type DocumentsCache = {
  lastUpdated: number;
  documents: Document[];
};

const CACHE_INTERVAL = 5000; // 5 seconds;
const CACHE_KEY = "documents";

export async function getDocuments() {
  const docs = await cache.get<DocumentsCache>(CACHE_KEY);
  if (!docs) return;

  if (Date.now() > docs.lastUpdated + CACHE_INTERVAL) {
    return;
  }

  return docs.documents;
}

export function setDocuments(documents: Document[]) {
  return cache.set(
    CACHE_KEY,
    JSON.stringify({
      lastUpdated: Date.now(),
      documents,
    }),
  );
}

type DocumentCache = {
  lastUpdated: number;
  content: string;
};

export async function getDocument(id: string) {
  const doc = await cache.get<DocumentCache>(CACHE_KEY + "/" + id);
  if (!doc) return;

  if (Date.now() > doc.lastUpdated + CACHE_INTERVAL) {
    return;
  }

  return doc.content;
}

export async function setDocument(id: string, content: string) {
  await cache.set(
    CACHE_KEY + "/" + id,
    JSON.stringify({
      lastUpdated: Date.now(),
      content,
    }),
  );
}