import { isPreview } from "./preview.js";
import { cacheStorage, chunksFromArray, getContent, getContentsList } from "./storage.js";
import { useRuntimeConfig } from "#imports";
export async function getContentIndex(event) {
  const defaultLocale = useRuntimeConfig().content.defaultLocale;
  let contentIndex = await cacheStorage().getItem("content-index.json");
  if (!contentIndex) {
    const data = await getContentsList(event);
    contentIndex = data.reduce((acc, item) => {
      acc[item._path] = acc[item._path] || [];
      if (item._locale === defaultLocale) {
        acc[item._path].unshift(item._id);
      } else {
        acc[item._path].push(item._id);
      }
      return acc;
    }, {});
    await cacheStorage().setItem("content-index.json", contentIndex);
  }
  return contentIndex;
}
export async function getIndexedContentsList(event, query) {
  const params = query.params();
  const path = params?.where?.find((wh) => wh._path)?._path;
  if (!isPreview(event) && !params.surround && !params.dirConfig && (typeof path === "string" || path instanceof RegExp)) {
    const index = await getContentIndex(event);
    const keys = Object.keys(index).filter((key) => path.test ? path.test(key) : key === String(path)).flatMap((key) => index[key]);
    const keyChunks = [...chunksFromArray(keys, 10)];
    const contents = [];
    for await (const chunk of keyChunks) {
      const result = await Promise.all(chunk.map((key) => getContent(event, key)));
      contents.push(...result);
    }
    return contents;
  }
  return getContentsList(event);
}