derma/src/facebook/get-page-events.mjs

import { do_request } from './graphql-api-request.mjs';

/// PageEventsTabPastEventsCardRendererQuery
export const past_render_query = async ({ pageID }) => {
  const doc_id = '4421910857857782';
  const resp = await do_request(doc_id, { pageID });
  const page = resp?.data?.page?.past_events ?? null;
  return page;
};

/// PageEventsTabPastEventsCardPaginationQuery
export const past_pagination_query = async ({ pageID, cursor }) => {
  const doc_id = '6953034388071359';
  const count = 9;
  const resp = await do_request(doc_id, { pageID, cursor, count });
  const page = resp?.data?.page?.past_events ?? null;
  return page;
};

/// PageEventsTabUpcomingEventsCardRendererQuery
export const upcoming_render_query = async ({ pageID }) => {
  const doc_id = '5182274978466320';
  const resp = await do_request(doc_id, { pageID });
  const page = resp?.data?.page?.upcoming_events ?? null;
  return page;
};

// PageEventsTabUpcomingEventsCardPaginationQuery
export const upcoming_pagination_query = async ({ pageID, cursor }) => {
  const doc_id = '6985622308176123';
  let count = 9;
  const resp = await do_request(doc_id, { pageID, cursor, count });
  const page = resp?.data?.page?.upcoming_events ?? null;
  return page;
};

// PageEventsTabRecurringEventsCardRendererQuery
export const upcoming_reoccuring_render_query = async ({ pageID }) => {
  const doc_id = '4458618790924188';
  const resp = await do_request(doc_id, { pageID });
  const page = resp?.data?.page?.upcomingRecurringEvents?.edges ?? null;

  if (page === null || !Array.isArray(page)) {
    return null;
  }

  let res = [];

  page.forEach(({ node }) => {
    let { childEvents, ...parent } = node;
    childEvents.edges.forEach(({ node }) => {
      let event = {
        ...parent,
        ...{
          id: node.id,
          time_range: { start: new Date(node.currentStartTimestamp * 1000) }
        }
      };
      res.push(event);
    });
  });

  return res;
};

export const get_page_events = async ({
  pageID,
  get_past_events,
  get_upcoming_events
}) => {
  let res = [];

  const result = await past_render_query({ pageID });

  if (result !== null) {
    let { has_next_page, end_cursor: cursor } = result.page_info;
    let { edges } = result;
    let retries = 0;
    while (get_past_events && has_next_page) {
      const paginationResult = await past_pagination_query({
        cursor,
        pageID
      });
      if (paginationResult === null) {
        ++retries;
        console.error(retries, 'retrying');
        continue;
      }
      if (retries > 10) {
        break;
      }
      retries = 0;
      edges = [...edges, ...paginationResult.edges];
      has_next_page = paginationResult?.page_info?.has_next_page ?? false;
      cursor = paginationResult.page_info.end_cursor;
    }
    res = [...edges.map(({ node }) => node)];
  }

  if (get_upcoming_events) {
    const result = await upcoming_render_query({ pageID });
    if (result !== null) {
      let { has_next_page, end_cursor: cursor } = result.page_info;
      let { edges } = result;
      let retries = 0;
      while (has_next_page) {
        const paginationResult = await upcoming_pagination_query({
          cursor,
          pageID
        });
        if (paginationResult === null) {
          ++retries;
          console.error(retries, 'retrying');
          continue;
        }
        if (retries > 10) {
          break;
        }
        edges = [...edges, ...paginationResult.edges];
        has_next_page = paginationResult?.page_info?.has_next_page ?? false;
        cursor = paginationResult?.page_info?.end_cursor;
      }

      res = [...edges.map(({ node }) => node)];
    }
    const reoccuring = await upcoming_reoccuring_render_query({ pageID });
    if (reoccuring !== null) {
      res = [...res, ...reoccuring];
    }
  }

  return res;
};

export default get_page_events;