markdown_link_checker_sc/src/process_local_image_links.js

Markdown Link Checker

import path from "path";
import fs from "fs";
import { sharedData } from "./shared_data.js";
import { LocalImageNotFoundError } from "./errors.js";
import { logFunction } from "./helpers.js";

// Checks if every image in every markdown page (results.page.relativeImageLinks) is present on the file system.
// - results is the array of information coming out of markdown parsing.
async function checkLocalImageLinks(results) {
  logFunction(`Function: checkLocalImageLinks()`);
  const errors = [];
  const promises = [];

  results.forEach((page /*, index, array*/) => {
    //console.log(`PAGE: ${page}`);

    page.relativeImageLinks.forEach((link, index, array) => {
      //console.log(`XYYXLINK: ${JSON.stringify(link, null, 2)}`);
      //console.log(`sharedData.options.repo: ${sharedData.options.repo}`);
      //console.log(`sharedData.options.subdir: ${sharedData.options.subdir}`);
      //console.log(`link.linkUrlt: ${link.url}`);
      //console.log(`dirname: ${path.dirname(page.page_file)}`);

      const fullImagePath = path.join(path.dirname(page.page_file), link.url);
      //console.log(`fullImagePath: ${fullImagePath}`);
      const promise = new Promise((resolve) => {
        fs.access(fullImagePath, fs.constants.F_OK, (err) => {
          if (err) {
            //console.log("Error");
            const error = new LocalImageNotFoundError({ link: link });
            errors.push(error);
            resolve(false);
          } else {
            //console.log("SUCCESS");
            resolve(true);
          }
        });
      });
      promises.push(promise);
    });
  });
  await Promise.all(promises); //Wait for all files to be checked
  return errors;
}

export { checkLocalImageLinks };